CN104101103A - Electric water heater and control method thereof - Google Patents

Abstract

The invention discloses an electric water heater and a control method thereof. The electric water heater comprises a main body, a switching valve, a sensor and a controller, wherein the main body is provided with a water outlet; the switching valve is used for opening or closing the water outlet and is connected with the water outlet; the sensor is used for detecting whether water drained from the water outlet is used by people or not; the controller is respectively connected with the sensor and the switching valve to control the switching valve to open or close the water outlet according to the sensor. According to the electric water heater disclosed by the embodiment of the invention, the electric water heater is convenient to use, water resources are prevented from being wasted, the electric water heater is enabled to be intelligent, the use by users is facilitated and the performance of the electric water heater is improved.

Description

Electric water heater and its control method

technical field

The invention relates to the technical field of household appliances, in particular to an electric water heater and a control method for the electric water heater.

Background technique

The traditional electric water heater does not have the function of automatically controlling the water flow. During the use of the electric water heater, it cannot automatically control the water outlet and shutdown of the electric water heater, which makes the use of the electric water heater inconvenient and easily causes waste of water resources.

Contents of the invention

The present invention aims to solve one of the above-mentioned technical problems in the prior art at least to a certain extent. Therefore, an object of the present invention is to propose an electric water heater with the function of automatically turning on and off the water flow.

Another object of the present invention is to propose a control method for the electric water heater.

An electric water heater according to an embodiment of the present invention includes: a main body, an on-off valve, an inductor and a controller. The main body has a water outlet; the on-off valve is connected to the water outlet, and the on-off valve is used to open or close the water outlet; the sensor is used to detect whether the water discharged from the water outlet is used by people The controller is respectively connected with the sensor and the switch valve, so as to control the switch valve to open or close the water port according to the sensor.

According to the electric water heater of the embodiment of the present invention, by setting the on-off valve and the sensor, when the water in the electric water heater needs to be used, the on-off valve can be controlled to open the water port for use; The on-off valve can be controlled to close the water outlet to avoid wasting water. Therefore, the sensor can quickly and timely understand the use of the electric water heater, so as to control the on-off valve, so as to open or close the water outlet in time, facilitate the use of the electric water heater, avoid wasting water resources, and also make the electric water heater Water heater intelligence improves the performance of electric water heaters.

In addition, the electric water heater according to the above embodiments of the present invention may also have the following additional technical features:

According to an embodiment of the present invention, the sensor is connected to the controller through a signal transmission harness. Thereby, the signal can be transmitted stably between the sensor and the controller, which facilitates the rapid response of the electric water heater and further saves water.

According to an embodiment of the present invention, the sensor is provided with a wireless signal transmitting device, and the controller is connected with a wireless signal receiving device adapted to the wireless signal transmitting device. As a result, wireless signals are transmitted between the sensor and the controller, which avoids the limitation of the installation position of the sensor, and the sensor can be installed at any position, which is convenient for the design and installation of the electric water heater, and improves the performance of the electric water heater .

According to an embodiment of the present invention, the electric water heater includes a shower head, the shower head is connected to the switching valve through a hose, and the sensor is arranged on the shower head. In this way, not only can it be further accurately detected whether the water output by the electric water heater is used by people, but also the waste of water resources can be further avoided.

According to an embodiment of the present invention, a water flow generator and a battery are arranged in the shower head, and the inductor is respectively connected with the water flow generator and the battery. Thereby, the inductor and its wireless signal transmitting device can be powered by the water flow generator and the battery can be charged, which improves the utilization rate of energy, saves energy and protects the environment, and does not need to charge the battery separately, which is convenient for the use of the electric water heater.

According to an embodiment of the present invention, the sensor is an infrared sensing device or a heat source sensor or a touch sensor. Therefore, the detection result of the sensor is accurate, and the use of the electric water heater is convenient.

According to an embodiment of the present invention, the sensor is arranged on the main body or the wall. Thereby, installation of the sensor is facilitated.

According to an embodiment of the present invention, the main body is provided with a protective cover covering the on-off valve, and the protective cover is connected to the main body by bolts. Thus, the on-off valve is effectively protected, the failure rate is reduced, the service life of the electric water heater is increased, and the maintenance cost of the electric water heater is reduced. In addition, the appearance of the electric water heater is beautiful and convenient for users to use. Bolting the guard to the body makes the guard easy to install and easy to service.

According to an embodiment of the present invention, a control panel is provided on the front surface of the protective cover, the controller is provided on the control panel, and the control panel is engaged with the protective cover. Therefore, it is convenient to control the electric water heater, which improves the practicability of the electric water heater, and the control panel is conveniently installed, which improves the assembly efficiency of the electric water heater.

According to an embodiment of the present invention, the switch valve is a normally closed solenoid valve. Therefore, it is convenient to control the on-off valve, the control efficiency and stability of the electric water heater are improved, and the energy consumption of the on-off valve is reduced.

According to an embodiment of the present invention, the electric water heater is a constant temperature electric water heater. As a result, the outlet water temperature of the electric water heater is kept constant, basically achieving the purpose of bathing at a constant temperature, avoiding the situation that the water output by the traditional electric water heater is intermittently hot and cold, and improving the performance of the electric water heater.

The control method for an electric water heater according to an embodiment of the present invention includes: detecting whether the water discharged by the electric water heater is used by a person; if the water discharged by the electric water heater is used by a person, opening the water outlet of the electric water heater and continuing to detect the If the water discharged by the electric water heater is not used by people, then close the water outlet of the electric water heater, and continue to detect the usage of the water discharged by the electric water heater.

According to the control method of the electric water heater according to the embodiment of the present invention, whether the electric water heater is turned on is adjusted according to the usage of the electric water heater, and when the electric water heater is not used, the electric water heater can be turned off quickly and in time, thereby reducing the waste of water resources and saving energy Environmental friendly.

Description of drawings

Fig. 1 is a schematic diagram of an electric water heater according to an embodiment of the present invention.

Fig. 2 is a sectional view of section A-A in Fig. 1 .

FIG. 3 is a partially enlarged schematic diagram of circled B in FIG. 2 .

Fig. 4 is a schematic diagram of an electric water heater according to an embodiment of the present invention.

Fig. 5 is a schematic diagram of an electric water heater according to another embodiment of the present invention.

Fig. 6 is a schematic diagram of cooperation between the shower head and the shower bracket of the electric water heater according to an embodiment of the present invention.

Fig. 7 is a schematic diagram of an on-off valve of an electric water heater according to an embodiment of the present invention.

Fig. 8 is a top view of an on-off valve of an electric water heater according to an embodiment of the present invention.

Reference signs:

Electric water heater 100;

Main body 1; water outlet 101;

Signal transmission harness 11; thermostatic valve 12; thermostatic outlet pipe 13; shower bracket 14; sensor installation box 15;

Bottom cover 16;

switch valve 2;

Valve seat 21; water inlet channel 201; water outlet channel 202;

Electromagnetic valve body 22; Electromagnetic coil 221; Pilot valve core sleeve 222; Pilot valve shaft 223; Pressure head 224; Spring 225;

Adhesive film 23;

Film cover 24

Sensor 3;

controller 4;

Wireless signal transmitting device 51; Wireless signal receiving device 52

Shower nozzle 7; water flow generator 61; battery 62;

Hose 8;

protective cover9.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore It should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

The electric water heater 100 according to the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIGS. 1 to 6 , an electric water heater 100 according to an embodiment of the present invention includes: a main body 1 , an on-off valve 2 , a sensor 3 and a controller 4 .

Specifically, the main body 1 has a water outlet 101, and the water outlet 101 can output hot water in the electric water heater 100, or mixed cold water and hot water for use. The switch valve 2 is connected with the water port 101, and the switch valve 2 is used to open or close the water port 101. The sensor 3 is used to detect whether the water discharged from the water outlet 101 is used by people. The controller 4 is connected with the sensor 3 and the on-off valve 2 respectively, so as to control the on-off valve 2 to open or close the water port 101 according to the sensor 3 .

According to the electric water heater of the embodiment of the present invention, by setting the on-off valve 2 and the sensor 3, when the water in the electric water heater 100 needs to be used, the on-off valve 2 can be controlled to open the water outlet for use, and the electric water heater 100 can be used when the water is not needed. When there is water inside, the switch valve 2 can be controlled to close the water outlet to avoid wasting water. Therefore, the use of the electric water heater 100 can be quickly and timely understood through the sensor 3, so as to control the on-off valve 2, so as to open or close the water outlet 101 in time, facilitate the use of the electric water heater 100, and avoid wasting water resources , but also make the electric water heater 100 intelligent, and improve the performance of the electric water heater 100.

Advantageously, as shown in FIGS. 1 and 4 , in some embodiments of the present invention, the sensor 3 is connected to the controller 4 through a signal transmission harness 11 . Thus, the stable transmission of signals between the sensor 3 and the controller can facilitate the rapid response of the electric water heater 100 and further save water.

In addition, as shown in Figure 5, in other specific embodiments of the present invention, the sensor 3 is provided with a wireless signal transmitting device 51, and the controller 4 is connected with a wireless signal receiving device compatible with the wireless signal transmitting device 51 52. Thus, wireless signals are transmitted between the sensor 3 and the controller 4, avoiding the restriction on the installation position of the sensor 3, and the sensor 3 can be installed at any position, which is convenient for the design and installation of the electric water heater 100, and improves The performance of the electric water heater 100 is improved.

Advantageously, high-frequency signals are used for transmission between the wireless signal transmitting device 51 and the wireless signal receiving device 52 to avoid interference.

In addition, as shown in FIG. 1 and FIG. 6 , the electric water heater 100 includes a shower head 7 , which is connected to the on-off valve 2 through a hose 8 , and the sensor 3 is arranged on the shower head 7 . In this way, not only can it be further accurately detected whether the water output by the electric water heater 100 is used by people, but also the waste of water resources can be further avoided.

Further, as shown in FIG. 5 , a water flow generator 61 and a battery 62 are installed in the shower head 7 , and the sensor 3 is connected to the water flow generator 61 and the battery 62 respectively. Both the water flow generator 61 and the battery 62 can be used to provide electric energy to the inductor 3 and the wireless signal transmitter 51, wherein the battery 62 is a rechargeable battery, and when the current of the water flow generator 61 is insufficient, the battery 62 can supply power to the inductor 3 , when the voltage of the water flow generator 61 is sufficient, not only the inductor 3 can be powered by the water flow generator 61, but also the battery 62 can be charged by the water flow generator 61. Thus, the inductor 3 and its wireless signal transmitting device 51 can be powered by the water flow generator 61 and the battery 62 can be charged, which improves the utilization rate of energy, saves energy and protects the environment, and does not need to charge the battery 62 in addition, which is convenient for charging. Use of the water heater 100.

Further, the sensor 3 is an infrared sensing device or a heat source sensor or a touch sensor. Therefore, the detection result of the sensor 3 is accurate, and the use of the electric water heater 100 is facilitated.

Certainly, the sensing device that can be used to detect whether there is a person in the predetermined position in the prior art can also be used in the present invention, and the present invention that can be known in the prior art will not be described in detail.

Advantageously, as shown in FIG. 1, the sensor 3 is arranged on the main body 1. Specifically, since the sensor 3 needs to detect whether the water output by the electric water heater 100 is used by people, the sensor 3 needs to be arranged in the water space ( Bathroom, etc.), therefore, the main body 1 provided with the sensor 3 also needs to be arranged in a water space (bathroom, etc.), thereby facilitating the integration of the electric water heater 100, thereby making the electric water heater 100 easy to install.

In addition, the sensor can be set at any position where it can detect whether the water output by the electric water heater 100 is used by people, for example, the sensor 3 is set on the wall of the water space.

Further, the main body 1 is provided with a protective cover 9 covering the on-off valve 2, and the protective cover 9 is connected to the main body 1 by bolts. Thus, the on-off valve 2 is effectively protected, its failure rate is reduced, the service life of the electric water heater 100 is increased, and the maintenance cost of the electric water heater 100 is reduced. In addition, the appearance of the electric water heater 100 is beautiful and convenient for users to use. The protective cover 9 and the main body 1 are connected by bolts so that the protective cover 9 is easy to install and easy to overhaul.

Further, a control panel (not shown) is provided on the front surface of the protective cover 9 , the controller 4 is arranged on the control panel, and the control panel is clamped with the protective cover 9 . Therefore, it is convenient to control the electric water heater 100 , which improves the practicability of the electric water heater 100 , and the control panel is convenient to install, which improves the assembly efficiency of the electric water heater 100 .

Further, in some embodiments of the present invention, the switch valve 2 is a normally closed solenoid valve. Therefore, it is convenient to control the on-off valve, the control efficiency and stability of the electric water heater 100 are improved, and the energy consumption of the on-off valve is reduced.

Specifically, as shown in FIG. 7 and FIG. 8 , the switch valve 2 includes a valve seat 21 , a solenoid valve body 22 , an adhesive film 23 and an adhesive film cover 24 . The electromagnetic valve body 22 includes an electromagnetic coil 221 , a pilot valve core sleeve 222 , and a pilot valve shaft 223 , and a pressure head 224 is provided at the end of the pilot valve shaft 223 . The valve seat 21 is provided with a water inlet channel 201, a water outlet channel 202 and an installation groove (not shown) communicating with the water inlet channel 201 and the water outlet channel 202 respectively. The adhesive film 23 covers the installation groove, and the adhesive film cover 24 is connected with the valve The seat 21 cooperates to compress the rubber film 23, and the pilot valve core sleeve 222 cooperates with the rubber film cover 24 to form a cavity communicated with the water inlet channel, and the pilot valve core sleeve 222 is provided with a communication valve respectively connected with the cavity and the water outlet channel. The electromagnetic coil 221 can drive the pilot valve shaft 223 to move axially, and the pilot valve shaft 223 can drive the pressure head 224 to move between an open position for opening the communication hole and a closed position for closing the communication hole.

In addition, the on-off valve 2 can also be other types of on-off valve structures in the prior art, which are known in the prior art, and the present invention will not describe them in detail.

Advantageously, in some embodiments of the present invention, the electric water heater 100 is a constant temperature electric water heater 100 . Thus, the outlet water temperature of the electric water heater 100 is kept constant, basically achieving the purpose of bathing at a constant temperature, avoiding the situation that the water output by the traditional electric water heater 100 is hot and cold, and improving the performance of the electric water heater 100 .

Specifically, in a specific embodiment of the present invention, the electric water heater 100 of the present invention includes a main body 1, and the main body 1 is provided with a cold water inlet, a hot water outlet and a water outlet, and the cold water inlet and the hot water outlet A thermostatic valve 12 is arranged between them, and a thermostatic outlet pipe 13 is provided on the thermostatic valve 12, and the outlet end of the thermostatic outlet pipe 13 has an inner pipe thread, and the inlet end of the on-off valve 2 has an outer pipe that matches the inner pipe thread. thread. The outlet end of the switching valve 2 is connected to the shower head 7 through the hose 8 , and the shower head 7 is plugged and placed on the shower bracket 14 . A sensor installation box 15 with a built-in sensor 3 is fixed on the wall at a corresponding suitable position. The signal transmission harness 11 of the sensor 3 is connected with the control panel mounted on the protective cover 9 . The outer sides of the thermostatic valve 12 and the switching valve 2 are covered with a protective cover 9, and the protective cover 9 is fixed on the shell of the electric water heater 100 main body 1 with countersunk screws. A control panel is housed on the protective cover 9, and the control panel is buckled to the front of the protective cover 9. The lower part of the protective cover 9 is buckled with a bottom cover 16 . The control panel is equipped with a wireless remote control receiving device and a key switch power supply, or the control panel is equipped with preset control keys for regulating the inner tank water temperature and constant temperature water temperature. The sensor 3 can be an infrared human body sensor.

In addition, the sensor 3 can also be installed on the shower head 7 .

According to the embodiment of the present invention, the electric water heater 100 is equipped with a sensor 3, which can realize intelligent automatic control, can not only continuously provide constant temperature hot water, but also lower the installation environment requirements of the electric water heater 100, and the installation height is not limited. It can also be installed in environments that are not conducive to operation such as ceilings, additional walls, and corners. The electric water heater 100 of the present invention not only possesses the advantages of the traditional electric water heater 100, but also greatly improves the output capacity, and can prolong the application time of hot water by 50% under the same conditions.

The following briefly describes the assembly process of the electric water heater 100 according to the embodiment of the present invention with reference to the accompanying drawings.

As shown in FIGS. 1 to 8 , during the assembly process of the electric water heater 100 of the present invention, the thermostatic valve 12 is installed first. After the thermostatic valve 12 is installed, the on-off valve 2 is installed, and the adhesive film 23 is fitted on the adhesive film cover 24 first, and then installed in the installation groove of the valve seat 21 . Take the pilot valve core sleeve 222, align the shaft hole of the pilot valve core sleeve 222 and install the spring 225, after the combination of the pilot valve shaft 223 and the combined pressure head 224 is completed, install the pilot valve shaft 223 into the inner hole of the electromagnetic coil 221 , and then use four pan head screws to assemble and fix the valve seat 21. After the assembled on-off valve 2 has passed the test, it is connected to the constant temperature water outlet pipe 13 through threaded connection, and the connection between the on-off valve 2 and the constant temperature water outlet pipe 13 is sealed with a rectangular sealing ring.

Locate the position on the left side of the main body 1, drill holes and fix the shower bracket 10 with expansion screws, insert the shower nozzle 7, and use the hose 8 to thread the water outlet of the switch valve 2 and the shower nozzle 7. All connections are made of Rectangular gasket seals. Bore holes are fixed with the sensor installation box 15 that sensor 3 is housed with expansion screws, and the control panel and sensor 3 are connected with signal transmission harness 11 .

Cover the thermostatic valve 12 and the switch valve 2 with the protective cover 9 to prevent leakage, and fix the protective cover 9 to the shell of the main engine with countersunk screws. The control panel with the controller is buckled to the front of the protective cover 9, and the bottom cover 16 is buckled to the bottom of the protective cover 9 at last.

When the present invention is used, after the machine is energized, the power supply is provided for the infrared human body sensor through the connection line to provide 12V power supply. When the sensor senses that the object (human body) is within the sensing range of the sensor, the sensor outputs 12V power supply to provide power for the solenoid valve. The iron core and the static iron core are attracted to open the pilot valve hole, and the pressure in the back cavity of the valve core flows to the outlet through the pilot valve hole. At this time, the pressure in the back cavity of the valve core is lower than the inlet pressure, and the valve core is separated from the main valve port by using the pressure difference. , water flows from the inlet to the outlet. Conversely, when the human body leaves the sensing range of the sensor, the coil is powered off, the moving iron core is separated from the static iron core, and the guide valve hole is closed. Close the valve tightly under the action of force, and the shower will stop water supply.

The control method for an electric water heater according to an embodiment of the present invention includes: detecting whether the water discharged by the electric water heater is used by a person; if the water discharged by the electric water heater is used by a person, opening the water outlet of the electric water heater and continuing to detect the The use of the water discharged by the electric water heater, if the water discharged by the electric water heater is not used by people, then close the water outlet of the electric water heater, and continue to detect the use of the water discharged by the electric water heater.

According to the control method of the electric water heater according to the embodiment of the present invention, whether the electric water heater is turned on is adjusted according to the use of the electric water heater, and when the electric water heater is not used, the electric water heater can be turned off quickly and in time, thereby reducing the waste of water resources, energy saving and environmental protection .

Other components of the electric water heater according to the embodiment of the present invention, such as a heater and a temperature sensor, and operations are known to those skilled in the art, and will not be described in detail here.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (12)

1. an electric heater, is characterized in that: comprising:

Main body, described main body has water nozzle;

Be used to open or close the switch valve of described water nozzle, described switch valve is connected with described water nozzle;

The inductor whether being used by people for detection of the water of discharging from described water nozzle;

Controller, described controller is connected with described switch valve with described inductor respectively, to control described switch valve according to described inductor, opens or closes described water nozzle.

2. electric heater according to claim 1, is characterized in that: described inductor and described controller are by signal transmssion line Shu Xianglian.

3. electric heater according to claim 1, is characterized in that: described inductor is provided with wireless signal transmitting device, and described controller is connected with the wireless signal receiver suitable with described wireless signal transmitting device.

4. electric heater according to claim 3, is characterized in that: described electric heater comprises shower nozzle, and described shower nozzle is connected with described switch valve by flexible pipe, and described inductor is located on described shower nozzle.

5. electric heater according to claim 4, is characterized in that: in described shower nozzle, be provided with water flow generator and battery, described inductor is connected with described battery with described water flow generator respectively.

6. electric heater according to claim 1, is characterized in that: described inductor is infrared inductor or thermal source inductor or touch inductor.

7. according to the electric heater of claim 1, it is characterized in that: described inductor is located on described main body or wall.

8. electric heater according to claim 1, is characterized in that: described main body is provided with the protective cover that covers described switch valve, and described protective cover and described main body are bolted.

9. electric heater according to claim 8, is characterized in that: the front surface of described protective cover is provided with control panel, and described controller is located on described control panel, described control panel and described protective cover clamping.

10. according to the electric heater described in any one in claim 1-9, it is characterized in that: described switch valve is normally closed solenoid valve.

11. according to the electric heater described in any one in claim 1-9, it is characterized in that: described electric heater is thermostatic electric water heater.

The control method of 12. 1 kinds of electric heaters, is characterized in that: comprising:

Whether the water that detects electric heater discharge is used by people,

If the water that described electric heater is discharged is used by people, open the water nozzle of electric heater, and continue the service condition of the water of the described electric heater discharge of detection,

If the water that described electric heater is discharged is not used by people, close the water nozzle of electric heater, and continue the service condition of the water of the described electric heater discharge of detection.