JP2000314574A - Capacitor with receiver tank - Google Patents

Abstract

(57) [Problem] To provide a condenser with a receiver tank that can improve heat exchange performance while effectively utilizing space. SOLUTION: A heat exchanger 10 in which a plurality of heat exchange tubes 12 whose both ends are communicated and connected to both headers 11 is arranged in parallel between a pair of headers 11 arranged vertically and a core 1 is formed, A receiver tank 20 having a cylindrical shape having a predetermined length. The receiver tank 20 is arranged on the front side of the core 1 with its axis kept at an angle of 10 ° or less with respect to a horizontal plane.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a condenser with a receiver tank mainly used for a cooling device for a car air conditioner.

[0002]

2. Description of the Related Art In a cooling device for a car air conditioner,
Between a pair of headers arranged vertically, a plurality of heat exchange tubes connecting both ends to both headers are arranged in parallel, a core is formed, and a refrigerant flowing from a refrigerant inlet provided at the upper part of the header However, it is well known that a multi-flow type aluminum capacitor configured to flow in a meandering manner in a core by partition members in both headers and to flow out of a refrigerant outlet provided at a lower portion of the header is used. .

In such a cooling device, a receiver tank is provided for separating the gas-liquid mixed refrigerant flowing out of the condenser into gas and liquid and sending only the liquid refrigerant to the expansion valve. In some cases, a condenser with a receiver tank that is held by the condenser is used.

[0004] In a conventional condenser with a receiver tank, a cylindrical receiver tank having a predetermined length is generally arranged in parallel with the header in a so-called vertical state with its axis centered vertically. It is a target.

[0005]

In a condenser with a receiver tank, the receiver tank may be arranged on the front side of the condenser body in consideration of a space for mounting on a vehicle. In this case, as described above, When the receiver tank is placed vertically,
The upper part of the receiver tank will be located in front of the upper part of the core in the capacitor body.

However, since the upper part of the capacitor body dissipates more heat than the lower part, like the conventional condenser with a receiver tank, the upper part of the core has
If the upper part of the receiver tank is arranged, there is a problem that the air flow rate at the upper part of the core is reduced and the heat exchange performance is reduced.

[0007] Although the above description has been given of a condenser with a receiver tank, a similar problem also occurs in a subcooled system condenser in which a condenser section and a subcooled section are provided in a core, similarly to the above.

[0008] The present invention solves the above-mentioned problems of the prior art, and makes effective use of space such as space saving.
An object of the present invention is to provide a condenser with a receiver tank that can improve heat exchange performance.

[0009]

In order to achieve the above object, a condenser with a receiver tank according to the present invention comprises a plurality of heat exchange tubes between a pair of vertically arranged headers having both ends connected to both headers. The core is formed in parallel, and the refrigerant flowing from the condenser inlet provided at the upper part of the header flows through the plurality of heat exchange tubes, and the heat exchange flows out of the condenser outlet provided at the lower part of the header. Vessel, having a cylindrical shape having a predetermined length, provided with a receiver inlet and a receiver outlet at the end, taking in the refrigerant flowing out of the condenser outlet from the receiver inlet, and only the liquid refrigerant A receiver tank that flows out from a receiver outlet, wherein the receiver tank has an axis whose angle with respect to a horizontal plane is 10 ° or less. While keeping the, and summarized as made are arranged on the front side of the core.

In the condenser with a receiver tank according to the present invention, the receiver tank is disposed on the front side of the core with its axis centered sideways, and the receiver tank can be disposed avoiding the upper front part of the core. For this reason, the air permeability of the upper part of the core, which has a large amount of heat radiation, particularly the first path, can be improved, and heat exchange can be performed efficiently.

Further, since the receiver tank is arranged on the front side of the heat exchanger, the size of the receiver tank can be reduced as compared with the case where the receiver tank is provided separately in the refrigeration cycle. Furthermore, by appropriately changing the mounting angle of the receiver tank, the degree of freedom of design increases,
It can be manufactured without waste according to the installation space of a vehicle or the like.

In the present invention, it is preferable to adopt a configuration in which the receiver tank is disposed so as to be inclined with respect to a horizontal plane.

That is, when this configuration is employed, even if the amount of the refrigerant is small, a liquid pool can be formed, so that the bubbles can be removed and the gas-liquid separation can be performed smoothly and reliably.

Further, in the present invention, the core is provided with a capacitor portion on the upper portion thereof, and a subcool portion independent of the capacitor portion on the lower portion thereof,
The condenser inlet and the condenser outlet are provided corresponding to the condenser part, and a subcool inlet and a subcool outlet are provided at a position corresponding to the subcool part of the header, and a boundary between the condenser part and the subcool part is provided. It is preferable to adopt a configuration in which a position is disposed below the receiver outlet, and the receiver outlet and the subcool inlet are communicated with each other.

That is, when this configuration is adopted, the lubricating oil circulating in the refrigeration cycle can be smoothly discharged from the receiver outlet and circulated without staying in the receiver tank.

Further, in the present invention, the plurality of heat exchange tubes are divided into a plurality of paths by a partition member provided inside the header, and the refrigerant meanders in the core by sequentially passing through each path. It is preferable to adopt a configuration in which the receiver tank is disposed below the uppermost first pass of the plurality of passes.

That is, when this configuration is adopted, the air permeability of the first path having the largest heat dissipation can be improved.
Heat can be efficiently exchanged throughout the first pass.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS <First Embodiment> FIGS. 1 to 3 show a subcooled system capacitor to which a capacitor with a receiver tank according to a first embodiment of the present invention is applied. As shown in these figures, the subcooled system condenser basically includes a multi-flow heat exchanger (10) and a receiver tank (20).

The heat exchanger (10) is composed of a plurality of horizontal flat tubes (12) serving as heat exchange tubes between a pair of left and right vertical headers (11) facing each other at a distance. But their ends are both headers (1
1) In a state of being connected to (11), they are arranged in parallel at predetermined intervals in the vertical direction, and are provided with corrugated fins between each flat tube (12) and outside the outermost flat tube (12). The core (1) is configured by arranging (13). (14) is the outermost fin (13) to protect the outermost fin (13).
It is a strip-shaped side plate arranged outside of 3).

The core (1) of the heat exchanger (10) is provided with partition members (11a) and (11a) at the same height position under the headers (11) and (11). 11a) A capacitor section (2) is provided on the upper side with respect to (11a), and a subcool section (3) independent of the capacitor section (2) is provided on the lower side.

In the capacitor section (2), partition members (11b) (1) are provided at predetermined positions on both headers (11).
1b) is provided so that a number of flat tubes (12)
The path is divided into four paths (P1) to (P4).

Further, a capacitor inlet (2a) is provided at the upper end of the capacitor portion (2) in the right header (11), and a capacitor outlet (2b) is provided at the lower end of the capacitor portion (2). . This allows
The refrigerant flowing into the condenser part (2) from the condenser inlet (2a) passes through the first to fourth paths (P1) to (P4) in order so as to meander in the condenser part (2). While gradually cooling, condenser outlet (2b)
It is configured to be drained from.

A subcool entrance (3a) is located at a position corresponding to the subcool portion (3) of the right header (11).
Is provided, and a subcool outlet (3) is provided at a position corresponding to the subcool portion (3) of the left header (11).
b) is provided. As a result, the subcool entrance (3
The refrigerant flowing from a) is configured to be supercooled through the subcool section (3) and then flow out of the subcool outlet (3b).

The condenser inlet (2) in the core (1)
A refrigerant connection pipe (1a) is connected to a), and a refrigerant derivation joint block (1b) is attached to the subcool outlet (3b).

As shown in FIG. 4, the receiver tank (2
0) has a tank body (30) having a cylindrical shape with a bottom, and a thick disk-shaped lid member (40) which is fixed to the end opening of the tank body (30) so as to be fitted inside. ing.

A desiccant (31) is provided in the tank body (30).
And a filter (32). An upstream chamber (21) is provided on the bottom side of the loading members (31) and (32), and a downstream chamber (22) is provided on the lid side.

Further, a refrigerant inlet pipe (4) is provided in the lid member (40).
1) and the refrigerant outlet pipe (42) are attached in a penetrating state. One end of the refrigerant inflow pipe (41) has a lid member (40).
And the other end of the filter (3
2) and the desiccant (31), and is disposed in the upstream chamber (21). The refrigerant outlet pipe (42) has one end arranged outside the lid member (40) and the other end arranged in the downstream chamber (22).

In this embodiment, one end of the refrigerant inflow pipe (41) forms a receiver inlet (20a), and one end of the refrigerant outflow pipe (42) forms a receiver outlet (20b). .

The receiver tank (20) of this configuration is
Bracket (50) on the lower front side of the heat exchanger (10)
Mounted via. At this time, the receiver tank (20) has the lid member (40) side with the right header (11).
And the lid member (40) side with the tank body (3).
It is arranged in an inclined state so as to be located below the bottom side of 0). Further, the refrigerant outlet pipe (42) of the receiver outlet (20b) is arranged at the lowermost position in the downstream chamber (22). Further, the receiver outlet (20b) is arranged so as to be located above a boundary position between the condenser part (2) and the subcool part (3).

In this embodiment, as shown in FIG. 4, the inclination angle (θ) of the receiver tank (20) with respect to the horizontal plane is set to 5 °.

The receiver inlet (20a) of the receiver tank (20) and the condenser outlet (2b) are connected by a refrigerant pipe (51), and the receiver outlet (20b) of the receiver tank (20) and the subcool inlet (20). 3a) is connected by a refrigerant pipe (52).

In the subcooled system condenser having the above structure, the high-temperature and high-pressure gas refrigerant introduced from the condenser inlet (2a) flows in a meandering manner in the condenser section (2) as shown in FIGS. During the flow, the refrigerant is cooled and condensed by heat exchange with the outside air, becomes a gas-liquid mixed refrigerant, and flows out from the condenser outlet (2b). Further, the gas-liquid mixed refrigerant is connected to a refrigerant pipe (5) as shown in FIG.
1) and introduced into the upstream chamber (21) of the receiver tank (20) via the receiver inlet (20a). The refrigerant of the gas-liquid mixture thus introduced into the upstream chamber (21) passes through the desiccant (31) and the filter (32), and then flows into the downstream chamber (2).
Guided to 2) and stored. Further, of the refrigerant stored in the downstream chamber (22), only the liquid refrigerant (R) passes through the receiver outlet (20b) and the refrigerant pipe (52), and passes from the subcool inlet (3a) to the subcool part (3). Guided inside. Then, while the refrigerant (R) passes through the subcool section (3), the refrigerant (R) exchanges heat with the outside air to reduce the refrigerant temperature by 2 to 5 from the condensation temperature.
It is supercooled to a low temperature of about ℃ and becomes a stable state,
It flows out of the subcool outlet (3b) and is sent out to the expansion valve and the evaporator.

As described above, in the subcool system condenser of this embodiment, the receiver tank (2
0) is disposed on the lower side of the front surface of the core (1) in a horizontal state with its axis centered sideways. Air permeability can be improved. For this reason, heat exchange is efficiently performed in the upper part of the core, so that heat exchange performance can be improved.

In the present invention, the lower the receiver tank (20) is located, the higher the heat exchange performance can be maintained. That is, when the receiver tank (20) is arranged in front of the condenser part (2), there is a possibility that the wind may be hindered. However, the temperature difference between the condenser part (2) and the outside air decreases as it goes downward. Therefore, by arranging the receiver tank (20) at a position below the condenser portion where the temperature difference is small, for example, at the lower end position of the condenser portion (2) or at the position of the final path (P4) as in the above embodiment. In addition, the heat exchange performance can be reliably prevented from lowering.

However, in the present invention, by positioning the receiver tank (20) below the first pass (P1), a predetermined heat exchange performance can be obtained. That is, the first path (P1) of the core (1) has the largest amount of heat radiation, but a sufficient air permeability is obtained over the entire front surface of the first path (P1), so that the heat exchange performance is ensured. Can be improved.

In this embodiment, since the receiver tank (20) is inclined so that the downstream chamber (22) side thereof is positioned downward, the amount of the refrigerant (R) in the downstream chamber (22) is small. Even so, a liquid pool can be formed, and the bubbles can be smoothly removed. Since the gas-liquid separation can be reliably performed in this manner, it is possible to save the refrigerant and reduce the cost. In addition, since the end (the other end) of the refrigerant outflow pipe (42) is disposed at the lowermost position of the downstream chamber (22), only the liquid refrigerant (R) is reliably discharged from the downstream chamber (22). And high performance can be reliably maintained.

In this embodiment, the receiver outlet (20b) of the receiver tank (20) is located above the boundary between the condenser section (2) and the subcool section (3), so that the inside of the refrigeration cycle can be prevented. The lubricating oil circulating through the tank flows out smoothly from the receiver outlet (20b) without staying in the receiver tank (20), so that the heat exchange efficiency can be further improved.

In this embodiment, the receiver tank (20) is mounted on the front side of the heat exchanger (10), so that the receiver tank (20) is provided separately in the refrigeration cycle. In addition, the size can be reduced, and the space can be saved.

Further, since the mounting angle of the receiver tank (20) can be changed as appropriate, the subcool system capacitor of the present embodiment can be designed more freely and can be manufactured without waste according to the mounting space of the vehicle. Can be effectively used. Furthermore, by selectively using the receiver tank horizontal type of the present embodiment and the existing receiver tank vertical type according to the situation, the degree of freedom of design is further increased, and further effective use of space can be achieved. it can.

<Second Embodiment> FIG. 5 shows a second embodiment of the present invention.
FIG. 6 is a front view showing a subcool system condenser according to the embodiment, and FIG. 6 is a sectional view showing a receiver tank (120) applied to the condenser. As shown in both figures, the receiver tank (120) in the subcool system condenser of the second embodiment includes a tank body (130) having a bottomed cylindrical shape, and the tank body (130).
And a thick disk-shaped lid member (140) that is fixed to the end opening portion in an inner fitting state.

A desiccant (13) is provided in the tank body (130).
1) and the filter (132) are loaded, and the upstream chamber (12) is placed on the lid side of these loading members (131) and (132).
In 1), a downstream chamber (122) is provided on the bottom side.

Further, one end of the refrigerant inflow pipe (141) is arranged outside the lid member (140), and the other end is arranged in the upstream chamber (121). In addition, the refrigerant outflow pipe (1
42) has one end disposed outside the lid member (140) and the other end penetrating through the desiccant (131) and the filter (132), and is disposed in the downstream chamber (122).

Here, in this embodiment, one end of the refrigerant inflow pipe (141) forms a receiver inlet (10a), and one end of the refrigerant outflow pipe (142) forms a receiver outlet (20b). .

Then, the receiver tank (120)
However, as shown in FIG. 5, it is attached to the lower front side of the heat exchanger (10) via a bracket (50). At this time, the receiver tank (120) is configured such that the lid member (140) side corresponds to the right header (11) and the lid member (14).
It is arranged in an inclined state such that the 0) side is located above the bottom side of the tank body (130). Further, the refrigerant outlet pipe (142) of the receiver outlet (20b) is arranged at the lowermost position in the downstream chamber (122). The receiver outlet (20b) is disposed above the boundary between the condenser part (2) and the subcool part (3), as in the above embodiment.

In this embodiment, as shown in FIG. 6, the inclination angle (θ) of the receiver tank (20) with respect to the horizontal plane is set to 5 °.

The receiver inlet (20a) of the receiver tank (120) and the condenser outlet (2b) are connected by a refrigerant pipe (51), and the receiver outlet (20b) of the receiver tank (120) and the subcool inlet (3a). ) Are connected by a refrigerant pipe (52).

The other configuration is substantially the same as that of the first embodiment. Therefore, the same or corresponding portions are denoted by the same or corresponding reference numerals, and redundant description is omitted.

In this subcool system condenser, the gas-liquid mixed refrigerant flowing through the condenser section (2) and flowing out of the condenser outlet (2b) is supplied to the refrigerant pipe (5).
1) and introduced into the upstream chamber (121) of the receiver tank (120) via the receiver inlet (20a). Further, the gas-liquid mixed refrigerant passes through the desiccant (131) and the filter (132) and is stored in the downstream chamber (122), and only the liquid refrigerant (R) is discharged from the receiver outlet (20b).
And through the refrigerant pipe (52) and into the subcool inlet (3
From a), it is guided into the subcool section (3). Then, the refrigerant (R) is supercooled in the subcool section (3) and sent out to the expansion valve and the evaporator in the same manner as described above.

Also in this subcool system condenser, since the receiver tank (120) is arranged sideways, the receiver tank (120) is connected to the core (1).
, In particular, avoiding the first path (P1). Therefore, heat exchange is sufficiently performed in the upper part of the core, and the heat exchange performance can be improved.

Further, since the receiver tank (120) is inclined so that the downstream chamber (122) side thereof is positioned downward, even if the amount of the refrigerant (R) in the downstream chamber (122) is small, bubbles are generated. The cutting can be performed smoothly, the gas-liquid separation can be reliably performed, the refrigerant can be saved, and the cost can be reduced. Moreover, the downstream chamber (122)
At the lowermost position of the end of the refrigerant outflow pipe (142) (the other end)
Is disposed, only the liquid refrigerant (R) can be reliably discharged, and high performance can be reliably maintained.

In this embodiment, as in the first embodiment, space can be saved and the space can be effectively used.

In each of the above embodiments, the receiver tanks (20) and (120) are arranged so as to be inclined with respect to the heat exchanger (10). However, the present invention is not limited to this. As shown in FIG. 7, the receiver tanks (20) and (120) may be arranged so that their axes are parallel to the horizontal plane.

In each of the above embodiments, the inclination angle (θ) of the receiver tanks (20) and (120) is set to 5 °. However, the present invention is not limited to this. ) Is 1
As long as the angle is set to 0 ° or less, the above effects can be obtained.

In the above embodiment, the case where the present invention is applied to a subcooled system capacitor has been described. Needless to say, the present invention is also applicable to a condenser with a receiver tank in which a heat exchanger core is not provided with a subcooled portion. Can be applied.

[0055]

As described above, according to the condenser with a receiver tank of the present invention, the receiver tank is disposed on the front side of the core with its axis centered sideways. You can avoid it and arrange it. For this reason, the air permeability of the upper part of the core, which has a large amount of heat radiation, particularly the air permeability of the first path can be improved, and heat can be efficiently exchanged, so that the heat exchange performance can be improved. In addition, since the receiver tank is located on the front side of the heat exchanger, the receiver tank can be made more compact and space-saving than when the receiver tank is provided separately in the refrigeration cycle. Can be. Further, according to the present invention, since the mounting angle of the receiver tank can be changed, the degree of freedom in design is increased, and the receiver tank can be manufactured without waste according to the installation space of a vehicle or the like, and the effective use of space can be achieved. There is an effect that can be.

In the present invention, when the receiver tank is disposed in a state inclined with respect to the horizontal plane, a liquid pool can be formed even with a small amount of the refrigerant, so that the bubbles can be removed and the gas-liquid separation can be performed. There is an advantage that the operation can be performed smoothly and reliably, the refrigerant can be saved, and the cost can be reduced.

In the present invention, when the boundary position between the condenser portion and the subcool portion is disposed below the receiver outlet, the lubricating oil circulating in the refrigeration cycle does not stay in the receiver tank. Since the fluid can be smoothly discharged from the receiver outlet and circulated, there is an advantage that the heat exchange efficiency can be further improved.

[Brief description of the drawings]

FIG. 1 is a front view showing a subcooled system condenser to which a condenser with a receiver tank according to a first embodiment of the present invention is applied.

FIG. 2 is a bottom side view of the capacitor according to the first embodiment.

FIG. 3 is a front view showing a refrigerant path in the condenser of the first embodiment.

FIG. 4 is a sectional view showing a receiver tank applied to the capacitor of the first embodiment.

FIG. 5 is a front view showing a subcooled system condenser to which a condenser with a receiver tank according to a second embodiment of the present invention is applied.

FIG. 6 is a sectional view showing a receiver tank applied to the capacitor of the second embodiment.

FIG. 7 is a front view showing a subcool system condenser to which a condenser with a receiver tank according to a modification of the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Core 2 ... Condenser part 2a ... Condenser inlet 2b ... Condenser outlet 3 ... Subcool part 3a ... Subcool inlet 3b ... Subcool outlet 10 ... Heat exchanger 11 ... Header 11a, 11b ... Partition member 12 ... Flat tube (heat exchange tube) 20, 120: receiver tank 20a: receiver inlet 20b: receiver outlet P1 to P4: path R: liquid refrigerant

Claims (4)

[Claims] 1. A pair of vertically arranged headers,
A plurality of heat exchange tubes connecting both ends to both headers are arranged in parallel to form a core, and a refrigerant flowing from a condenser inlet provided at the top of the header flows through the plurality of heat exchange tubes, A heat exchanger flowing out from a condenser outlet provided at the lower part of the header, having a cylindrical shape having a predetermined length, a receiver inlet and a receiver outlet provided at an end, and flowing out from the condenser outlet A receiver tank for taking in the refrigerant from the receiver inlet and allowing only the liquid refrigerant to flow out of the receiver outlet, wherein the receiver tank has its axis centered with respect to a horizontal plane.
A condenser with a receiver tank, which is arranged on the front side of the core while maintaining an angle of 0 ° or less. 2. The condenser with a receiver tank according to claim 1, wherein the receiver tank is disposed so as to be inclined with respect to a horizontal plane. 3. The core is provided with a capacitor section on the upper side thereof, and a subcool section independent of the capacitor section on the lower side. The capacitor inlet and the capacitor outlet are provided corresponding to the capacitor section. And a subcool inlet and a subcool outlet are provided at a position corresponding to the subcool portion of the header, a boundary position between the condenser portion and the subcool portion is disposed below the receiver outlet, and the receiver outlet 3. The condenser with a receiver tank according to claim 1, wherein the condenser is connected to the subcool inlet. 4. 4. A partition member provided inside the header divides the plurality of heat exchange tubes into a plurality of paths, and the refrigerant passes through the respective paths in order to flow in the core in a meandering manner. 4. The condenser with a receiver tank according to claim 1, wherein the receiver tank is arranged below a first path located at the highest position among the plurality of paths. 5.