JP2005024213A - Heat storage heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat storage heater capable of adjusting to an appropriate temperature even when heating by an auxiliary heating element.
SOLUTION: A heat storage heater 1 warms an electric heater 2, a heat storage brick 3 capable of storing heat by heating the electric heater 2, an intake 6 for taking in outside air, and the taken outside air in contact with the heat storage brick 3. A ventilation path 5 and an outlet 8 for blowing out hot air passing through the ventilation path 5 are provided. A space formed between the heat insulating material 4 disposed on the outer periphery of the heat storage brick 3 and the heat storage brick 3 becomes the ventilation path 5. Provided with a temperature adjustment mechanism 9 that mixes the hot air heated by the heat storage brick 3 and the outside air sent to the air outlet 8 without contacting the heat storage brick 3 in the vicinity of the air outlet 8 to obtain hot air of an appropriate temperature. . In the ventilation path 5, in addition to the heat storage brick 3, a ginger heater 10 that warms the outside air is provided. Since the ginger heater 10 heats only the gas in the ventilation path 5 and does not heat the outside air sent to the outlet 8 side, the outside air can be used for temperature adjustment.
[Selection] Figure 1

Description

  The present invention relates to a heat storage heater that heats a heat storage body by heat generated by the heat generation body, stores heat in the heat storage body, and heats the outside air by releasing the heat to perform heating.

  Conventionally, heat storage heaters are known that use inexpensive electric power such as midnight power to heat heat storage bricks with heat generated by electric heaters to store heat in the heat storage bricks, warm the outside air with this heat, and blow out hot air Yes. FIG. 4 is a schematic configuration diagram of a conventional heat storage heater. The heat storage heater 100 includes an electric heater 101, a heat storage brick 102 that is heated by the heat generated by the electric heater 101 and can store heat, and a heat insulating material 103 disposed around the heat storage brick 102. The heat storage brick 102 and the heat insulating material Ventilation path 104 is formed between 103. In this heat storage heater 100, the outside air (cold air) sent from the intake port 105 to the ventilation path 104 by the fan 106 is warmed by contacting with the heat storage brick 102 while passing through the ventilation path 104, and from the air outlet 107. Send it out.

  The temperature of the blown-out gas is adjusted by mixing hot air that has passed through the ventilation path 104 and outside air that is sent directly to the outlet 107 without passing through the ventilation path 104 in the vicinity of the outlet 107. Therefore, the outside air taken in by the fan 106 is divided into one that is sent to the ventilation path 104 to make hot air, and one that is sent to the outlet 107 side as it is to be used for temperature adjustment. Therefore, the regenerator heater 100 is provided with a damper 108 in the vicinity of the intake port 105 in order to adjust the ratio between the amount of outside air sent to the ventilation path 104 and the amount of outside air sent to the outlet 107 side as it is. Further, there may be a case where the hot air blown out due to insufficient heat storage amount of the heat storage brick 102 does not reach a desired temperature. Therefore, the heat storage heater 100 includes not only the heat storage bricks 102 but also an auxiliary heater 109 as a separate heating means in the vicinity of the air outlet 107 (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2001-4160 (FIG. 7)

  However, in the said conventional thermal storage heater, when heating external air using an auxiliary heater in addition to a thermal storage brick, there exists a problem that the temperature control of warm air may be impossible.

  As described above, in the conventional heat storage heater, the ratio of the amount of outside air that is brought into contact with the heat storage bricks and the amount of outside air that is not brought into contact with the bricks and sent directly to the blower outlet is adjusted by a damper to blow out from the blower outlet. The temperature of the warm air is adjusted. In this configuration, when heating is performed only with the heat storage brick, the temperature of the hot air can be appropriately controlled by the outside air for temperature adjustment.

  However, the conventional heat storage heater has an auxiliary heater in the vicinity of the air outlet where the high temperature hot air obtained by contacting the heat storage brick and the low temperature outside air that is sent to the air outlet without contacting the brick are mixed. It has. That is, in the conventional heat storage heater, the auxiliary heater is configured to heat a mixed gas composed of high-temperature hot air and low-temperature outside air. In this configuration, if the amount of heat stored in the heat storage brick is less than the specified range and the auxiliary heater is used, the low temperature outside air used for temperature adjustment is also heated by the auxiliary heater, so the temperature cannot be adjusted by the low temperature outside air. High temperature hot air may be blown out from the outlet.

  Therefore, a main object of the present invention is to provide a regenerative heater that can be adjusted to an appropriate temperature even when heating by an auxiliary heating element.

  The present invention achieves the above object by arranging an auxiliary heating element so as not to heat the low-temperature outside air used for temperature control.

  That is, the heat storage heater of the present invention is configured to contact the heat storage body with a heat generating body, a heat storage body that is heated by the heat generated by the heat generating body and can store heat, an intake port that takes in outside air, and outside air that is taken in from the intake port. An air passage that is heated by heating and an air outlet that blows out the heated gas that has passed through the air passage. And it is arrange | positioned in the said ventilation path, The auxiliary heat generating body which can heat the gas which passes the inside of this ventilation path is provided, It is characterized by the above-mentioned.

  The heat storage heater of the present invention having the above-described configuration is such that only the gas existing in the air passage is passed through the gas heated by the auxiliary heating element, and the outside air that is taken in from the intake without contacting the heat storage element is caused by the auxiliary heating element. Since it is not heated, this outside air can be used for temperature control. That is, the heat storage heater of the present invention includes the auxiliary heating element in the air passage, so that the outside air used for temperature adjustment is not heated by the auxiliary heating element. Therefore, the heat storage heater of the present invention uses the warm air blown out from the outlet using the outside air for temperature adjustment, even if an auxiliary heating element is used to additionally heat the outside air due to insufficient heat storage amount of the heat storage body. It is possible to adjust the temperature appropriately, and it can be used more comfortably.

Hereinafter, the present invention will be described in more detail.
The heat storage heater of the present invention includes an intake port for taking in outside air, a heating element, a heat storage element that is heated by the heat generated by the heating element to store heat, and that can heat the outside air that has been taken in by this heat, and a warmed temperature. It has an outlet that blows out the wind.

  Examples of the heating element include an electric heater that generates heat when energized. Specific examples include a sheathed heater made of a nickel alloy. As a heat storage body, what is formed from materials with high heat conductivity, such as magnesia, iron oxide, peridotite, and high heat storage capability, is mentioned, for example. In addition, if the heat storage body itself is provided with an air passage that allows the outside air to pass through, the contact area with the outside air can be increased, so that heat can be extracted uniformly from the inside of the heat storage body, and the heat efficiency Can be increased. Furthermore, it is preferable to provide a heat insulating material for blocking the heat storage body and the outside so as not to leak the heat of the heat storage body to the outside. In particular, when the heat insulating material is disposed so as to surround the outer periphery of the heat storage body, the heat insulating effect can be enhanced. Examples of the heat insulating material include a silica / alumina heat insulating material. When the heat insulating material is provided, the space surrounded by the heat insulating material becomes a space where the outside air can come into contact with the heat storage body, that is, a ventilation path. A well-known thing may be used for the said heat generating body, a thermal storage body, and a heat insulating material, respectively. In addition, the heat storage heater of the present invention may be configured to include gas delivery means such as a fan to forcibly send out hot air, or may be configured to send out hot air by natural convection. In addition, it is preferable that the heat storage heater of the present invention includes a temperature adjustment mechanism for warm air blown out from the air outlet. Specifically, for example, a configuration capable of adjusting the ratio of the amount of outside air to be brought into contact with the heat storage body and the amount of outside air to be sent to the outlet as it is without being in contact with the heat storage body, or a heated high-temperature gas ventilation path The structure which can adjust the amount sent out from is mentioned. Such an adjustment mechanism includes, for example, one made of bimetal.

  And in this invention, the auxiliary heat generating body which heats the gas which exists in the said ventilation path is provided. That is, in the present invention, the auxiliary heating element is disposed at a location where the outside air (hereinafter referred to as outside air A) that is sent to the outlet without contacting the heat storage body is not heated. With this configuration, even when heating is performed using both the heat storage body and the auxiliary heating element, the outside air A is not heated by these heating, so the outside air A is added to the high-temperature gas that has left the ventilation path. By mixing, it is possible to adjust the temperature of the hot air blown out from the outlet. Therefore, in the present invention, the gas A can be used for temperature adjustment. Examples of the auxiliary heating element include an electric heater that generates heat when energized. In particular, since the auxiliary heating element is disposed near the high-temperature heat storage body, it is preferable that the auxiliary heating element has excellent heat resistance that can withstand the heat from the heat storage body. Specific examples include a sheathed heater made of a nickel alloy. You may use a well-known thing.

  The auxiliary heating element may be disposed in the ventilation path, but is preferably provided on the intake side of the ventilation path in order to effectively increase the temperature of the outside air taken in from the intake.

  Moreover, you may provide the guide for a partition between a thermal storage body and an auxiliary heat generating body. It can be considered that the heat storage heater of the present invention is used in a state in which constituent members such as a heat storage body are housed in the main body case. At this time, as a construction procedure of the heat storage heater of the present invention, after installing the main body case to which the auxiliary heating element is attached, the heat storage body is installed in the main body case. In this procedure, when the heat storage body is installed in the main body case, the heat storage body may come into contact with the auxiliary heat generation body attached to the main body case and the auxiliary heat generation body may be damaged. Therefore, it is preferable to arrange a partitioning guide between the heat storage body and the auxiliary heating element in order to prevent damage to the auxiliary heating element that may occur during construction. This guide is preferably shaped to allow ventilation so that the gas passing through the ventilation path can contact both the heat storage body and the auxiliary heating element. Examples of the guide include a mesh plate and a plate material having a plurality of holes. In addition, since this guide is disposed in the ventilation path, it may be exposed to a high temperature, and therefore, the guide is preferably formed from stainless steel having excellent heat resistance.

  Embodiments of the present invention will be described below.

  FIG. 1 is a schematic configuration diagram of a heat storage heater of the present invention. The heat storage heater 1 shown in this example includes an electric heater 2, a heat storage brick 3 that is heated by the electric heater 2 and can store heat, and a heat insulating material 4 that is disposed so as to surround the outer periphery of the heat storage brick 3. . This heat storage heater 1 forms a ventilation path 5 between the heat storage brick 3 and the heat insulating material 4, and sends outside air from the intake 6 to the ventilation path 5 by a fan 7, and when the outside air passes through the ventilation path 5, Heat exchange is performed by contacting the heat storage brick 3 heated by the heater 2 to warm the outside air to hot air, and the hot air from the ventilation path 5 is forcibly blown out from the air outlet 8. At this time, if hot air is blown out as it is, the temperature may be too high. Therefore, the regenerative heater 1 has a temperature adjustment mechanism 9 in order to mix hot air and the outside air that is not brought into contact with the regenerative brick 3 and that is sent to the air outlet 8 side in the vicinity of the air outlet 8 to obtain hot air at an appropriate temperature. With The temperature adjustment mechanism 9 shown in this example is capable of adjusting the ratio between the amount of outside air sent to the ventilation path 5 and the amount of outside air sent directly to the outlet 8 without passing through the ventilation path 5. By opening and closing 9, the mixing ratio of the hot air that has passed through the ventilation path 5 and the low temperature outside air that is not warmed by the heat storage brick 3 is controlled to adjust the mixed gas to an appropriate temperature. A feature of the present invention is that, in addition to the heat storage brick 3, the ginger heater 10 is provided in the air passage 5 as an auxiliary heating element for warming the outside air. Hereinafter, this point will be mainly described.

  In the ventilation path 5, there is a gas heated in contact with the heat storage brick 3 or a heated gas. However, there is a case where these gases cannot be heated to an appropriate temperature due to insufficient heat storage amount of the heat storage brick 3. In such a case, the gas passing through the ventilation path 5 is heated together with the heat storage brick 3 by the ginger heater 10 provided in the ventilation path 5. With this configuration, the gas heated by both the heat storage brick 3 and the ginger heater 10 is not sent through the ventilation path 5, but is sent to the vicinity of the outlet 8 and the vicinity of the outlet 8 exiting the ventilation path 5. And is blown out from the outlet 8. That is, in the regenerative heater 1, by adjusting the ratio of the outside air by the temperature adjustment mechanism 9, the gas heated through the ventilation path 5 can be controlled to warm air at an appropriate temperature.

  In the heat storage heater 1 shown in FIG. 1, an air passage 3a is provided so that the heat storage brick 3 itself can also be ventilated, and the area where the outside air can contact the heat storage brick 3 is increased, so that heat can be exchanged efficiently. It has a configuration that can. In addition, the heat storage brick 3 energizes the electric heater 2 until it rises to a certain temperature (for example, about 700 ° C.) to store heat, releases this heat, and warms the outside air passing through the ventilation path 5. At this time, the temperature adjustment mechanism 9 adjusts the ratio of the outside air sent to the ventilation path 5 and the outside air sent as it is to the blow outlet 8 side according to the temperature of the outside air so that the temperature of the hot air can be controlled.

<Test example>
A plurality of heat storage heaters shown in Example 1 and the conventional heat storage heater shown in FIG. 4 are prepared, and heat storage bricks and ginger heaters (auxiliary heaters in conventional heat storage heaters, the same shall apply hereinafter). When used together, the temperature of the hot air blown out from the outlet was measured.

  All the regenerative heaters used in the test were Incoloy (registered trademark) sheathed heaters for both the electric heater and the ginger heater. Moreover, in any of the heat storage heaters, each of the electric heater and the ginger heater has the same output capacity. The heat storage brick was made of iron oxide as the main component, and the heat insulating material was made of silica / alumina. The temperature control mechanism 9 includes a damper made of bimetal, and by changing the amount of displacement of the bimetal according to the temperature of the outside air, the ratio of the outside air sent to the ventilation path and the outside air sent directly to the outlet is adjusted. . Moreover, all the thermal storage heat heaters were produced with the same dimensions, and the thermal conditions such as the temperature of the outside air used in the test, the thermal storage amount of the thermal storage bricks, and the heating time of the ginger heater were similarly performed.

  First, in all the heat storage heaters, the temperature of the gas blown out from the outlet was measured when only the heat storage bricks were used as the outside air heating means. Then, both the regenerative heater shown in Example 1 and the conventional regenerative heater were about 100 ° C., and almost no difference was observed. Next, in all the heat storage heaters, the temperature of the gas blown out from the air outlet when both the heat storage brick and the ginger heater were used was measured. As a result, the conventional regenerative heater was as high as about 300 ° C., whereas the regenerative heater of Example 1 was about 100 to 150 ° C. From this, it is understood that the present invention can control the temperature of hot air even when using a ginger heater.

  In addition to the configuration of the first embodiment, a partition guide may be provided between the heat storage brick and the ginger heater. FIG. 2 is a schematic configuration diagram showing an example in which the heat storage heater of the present invention shown in FIG. 1 is provided with a partition guide. The same symbol indicates the same thing. The basic structure of the heat storage heater 20 shown in this example is the same as that of the heat storage heater 1 shown in the first embodiment, and the difference is in the ventilation path formed between the heat storage brick 3 and the heat insulating material 4. The heater 10 is arranged, and further, a partition guide 11 is provided between the heat storage brick 3 and the ginger heater 10. In this example, the partition guide 11 uses a stainless steel mesh plate that can be ventilated so that the outside air taken in from the intake 6 can contact both the heat storage brick 3 and the ginger heater 10 and has excellent heat resistance. . By providing such a partitioning guide 11, when the thermal storage brick 3 is placed in a previously installed main body case (not shown), the thermal storage brick 3 contacts the ginger heater 10 attached to the main body case and is damaged. Can be prevented.

  In the first and second embodiments, the type in which hot air is forcibly discharged using a fan has been described, but the present invention may be of a type that does not include a fan and that discharges hot air by natural convection. FIG. 3 is a schematic configuration diagram showing a spontaneous discharge type heat storage heater of the present invention. The same code | symbol shows the same thing. The heat storage heater 30 shown in this example has the same basic configuration as the heat storage heater 1 shown in the first embodiment. That is, the electric heater 2, the heat storage brick 3 heated by the electric heater 2 and capable of storing heat, the heat insulating material 4 disposed on the outer periphery of the heat storage brick 3, and the heat storage brick facing each other in the space surrounded by the heat insulating material 4. Ventilation path 5 formed between 3, an intake 6 for taking in outside air, and an outlet 8 for blowing out hot air in which the gas warmed by the heat storage brick 3 and the outside air sent out from the intake 6 are mixed. With. In addition, a temperature adjusting mechanism 9 is provided for adjusting the amount of hot air heated by the heat storage brick 3 to be sent to the outlet 8 side. The regenerative heater 30 also includes a ginger heater 10 in the ventilation path 5.

  The ginger heater 10 provided in the heat storage heater 30 heats only the gas passing through the ventilation path 5, and does not heat the outside air that does not pass through the ventilation path 5, so that this outside air can be used for temperature adjustment. . Therefore, the heat storage heater 30 shown in this example is also the case of using the ginger heater 10 in addition to the heat storage bricks 3 in the same manner as in the above-described Examples 1 and 2, the hot air blown out from the outlet 8 Temperature control can be performed.

  In addition, in the heat insulating material 4 surrounding the outer periphery of the heat storage brick 3, a damper made of a bimetal is disposed as the temperature adjustment mechanism 9 on the side from which the gas warmed by the heat storage brick 3 is released (upper side in FIG. 3). The damper is displaced up and down in FIG. 3 according to the temperature of the outside air, thereby controlling the amount of hot air heated by the heat storage brick 3 and the ginger heater 10 to the outlet 8 side.

  The heat storage heater of the present invention is provided with a separate heating means in addition to the heat storage body, and is suitable for use when heating the outside air by these. At this time, temperature adjustment is possible and it can be used more comfortably.

It is a schematic block diagram of this invention heat storage heater. It is a schematic block diagram of this invention thermal storage heater, Comprising: The example which further provides a partition guide is shown. It is a schematic block diagram of this invention heat storage heater, Comprising: The example of a spontaneous discharge type is shown. It is a schematic block diagram of the conventional heat storage heater.

Explanation of symbols

1, 20, 30 Regenerative heater 2 Electric heater 3 Regenerative brick 4 Insulation
5 Ventilation path 6 Inlet 7 Fan 8 Air outlet 9 Temperature control mechanism
10 Ginger heater 11 Partition guide
100 Thermal storage heater 101 Electric heater 102 Thermal storage brick 103 Thermal insulation
104 Ventilation path 105 Inlet 106 Fan 107 Outlet 108 Damper
109 Auxiliary heater

Claims (2)

A heating element;
A heat storage body that is heated by the heat generated by the heat generation body and can store heat; and
An intake for taking in outside air;
A ventilation path for warming the outside air taken in from the intake by contacting the heat storage body;
A blowout port for blowing out the warmed gas through the ventilation path,
A heat storage heater characterized by comprising an auxiliary heating element that is disposed in the ventilation path and that can heat the gas passing through the ventilation path.   2. The regenerative heater according to claim 1, wherein the auxiliary heating element is provided on the intake side in the ventilation path.

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