JP6011669B1 - Outdoor unit - Google Patents

Abstract

The temperature of a control board in the internal space of a water unit rises. An outdoor unit 1 according to the present invention includes a machine room 2a that houses a compressor, an air heat exchanger that exchanges heat between a refrigerant and outside air, and an air fan that houses an outdoor fan that faces the air heat exchanger. An outdoor unit main body 2 having a chamber 2b, a partition plate 60 above the outdoor unit main body 2, and a water heat exchanger for exchanging heat between the refrigerant and water and a side of the water heat exchanger The partition 60 is provided with a hole 55 through which the air that has cooled the control board 57 flows on the control board 57 side of the water heat exchanger. [Selection] Figure 10

Description

  The present invention relates to an outdoor unit including a water unit that houses a water heat exchanger.

  Some conventional outdoor units (heat pump hot water heaters) include a refrigeration cycle in which refrigerant is circulated and a floor heating circuit for circulating hot water in the floor heating device. Therefore, the refrigeration cycle includes a water heat exchanger that exchanges heat between the refrigerant and water, and an air heat exchanger that exchanges heat between the refrigerant and outdoor air.

JP2010-14352

  This water heat exchanger is often placed inside an outdoor unit body that houses an air heat exchanger or an outdoor fan. However, the water heat exchanger is housed inside a water unit, and the water unit is placed in the outdoor unit. It is conceivable to place it above the main body. In this case, the internal space of the water unit that houses the water heat exchanger and the internal space of the outdoor unit main body are partitioned by the partition plate. At this time, in addition to the water heat exchanger, a pump, a control board, and the like are housed inside the water unit, but there is a problem that the temperature of the control board rises inside the water unit.

  Accordingly, an object of the present invention is to provide an outdoor unit that can prevent the temperature of the control board from rising inside the water unit.

  An outdoor unit according to a first aspect of the present invention includes a machine room that houses a compressor, an air heat exchanger that exchanges heat between a refrigerant and outside air, and a blower room that houses an outdoor fan that faces the air heat exchanger. An outdoor unit main body, a water heat exchanger that is partitioned by a partition plate above the outdoor unit main body and that exchanges heat between the refrigerant and water, and a control board that is disposed on the side of the water heat exchanger And a hole through which the air that has cooled the control board flows is formed on the control board side of the water heat exchanger.

  In this outdoor unit, since the hole through which the air that has cooled the control board flows is formed in the partition plate, the control board in the internal space of the water unit can be cooled. Therefore, it is possible to prevent the temperature of the control board in the internal space of the water unit from rising.

  An outdoor unit according to a second aspect of the present invention is the outdoor unit according to the first aspect of the present invention, wherein the hole communicates the internal space of the water unit and the blower chamber.

  In this outdoor unit, since the internal space of the water unit and the air blowing chamber communicate with each other through the holes, the air that has cooled the control board on the partition plate easily flows toward the air blowing chamber. Therefore, it is possible to prevent the temperature of the control board in the internal space of the water unit from rising.

  An outdoor unit according to a third aspect of the present invention is the outdoor unit according to the second aspect of the present invention, comprising an electrical component box that covers the control board, and the electrical component box is locked to an opening formed in the partition plate. It has a locking part, and the hole is formed around the locking part when the locking part is locked in the opening.

  This outdoor unit can be formed by locking the locking part of the electrical component box to the opening of the partition plate without separately forming a hole for communicating the internal space of the water unit and the air blowing chamber.

  An outdoor unit according to a fourth aspect of the present invention is the outdoor unit according to any one of the first to third aspects, wherein the hole communicates the internal space of the water unit with the machine room and has a burring. The blower chamber and the machine chamber communicate with each other.

  In this outdoor unit, since the internal space of the water unit and the air blowing chamber communicate with each other through the hole and the machine room, the air that has cooled the control board on the partition plate easily flows toward the air blowing chamber. Therefore, it is possible to prevent the temperature of the control board in the internal space of the water unit from rising. Moreover, since the hole of a partition plate has a burring, it can prevent that water enters into a machine room from the internal space of a water unit.

  As described above, according to the present invention, the following effects can be obtained.

  In the first invention, since the hole through which the air that has cooled the control board flows is formed in the partition plate, the control board in the internal space of the water unit can be cooled. Therefore, it is possible to prevent the temperature of the control board in the internal space of the water unit from rising.

In the second invention, since the internal space of the water unit and the air blowing chamber communicate with each other through the hole, the air that has cooled the control board on the partition plate easily flows toward the air blowing chamber. Therefore, it is possible to prevent the temperature of the control board in the internal space of the water unit from rising.
In 3rd invention, even if it does not form separately the hole which connects the internal space of a water unit and a ventilation chamber, it can form by latching the latching | locking part of an electrical component box to the opening of a partition plate.

  In the fourth aspect of the invention, since the internal space of the water unit and the air blowing chamber communicate with each other through the hole and the machine room, the air that has cooled the control board on the partition plate easily flows toward the air blowing chamber. Therefore, it is possible to prevent the temperature of the control board in the internal space of the water unit from rising. Moreover, since the hole of a partition plate has a burring, it can prevent that water enters into a machine room from the internal space of a water unit.

It is a block diagram which shows the temperature control system of embodiment of this invention. It is a front view of the outdoor unit contained in the temperature control system of FIG. Fig.3 (a) is a figure explaining the internal structure of an outdoor unit main body and a water unit when seeing an outdoor unit from the front, and FIG.3 (b) is a water unit when seeing an outdoor unit from the top. FIG. 3C is a diagram for explaining the arrangement of the hot water supply water pipe connection and the heating water pipe connection when the outdoor unit is viewed from the right side. It is a perspective view of the state in which the heat exchanger for hot water supply and the heat exchanger for heating are covered with a heat insulating material. It is a top view of the partition plate arrange | positioned between an outdoor unit main body and a water unit. FIG. 6A is a perspective view of the bottom member of the electrical component box, and FIG. 6B is a perspective view of the cover member of the electrical component box. Fig.7 (a) is a top view of the bottom member of an electrical component box, and 7 (b) is a side view of the bottom member of an electrical component box. It is a perspective view of the state which attached the bottom member of the electrical component box to the partition plate. It is the elements on larger scale of FIG. It is a figure which shows the air flow in the inside of an indoor unit. In the modification of this invention, it is a top view of the partition plate arrange | positioned between the outdoor unit main body and the water unit. It is a figure which shows the structure of the hole formed in the partition plate of FIG. It is a figure which shows the air flow in the inside of an indoor unit about the modification of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a configuration diagram of a temperature control system according to an embodiment of the present invention. As shown in FIG. 1, the temperature control system includes a heat pump outdoor unit 1 (hereinafter referred to as an outdoor unit 1) and a usage-side device 4 connected to the outdoor unit 1.

  As shown in FIGS. 1 to 3, the outdoor unit 1 includes an outdoor unit main body 2 as a heat pump unit, and a water unit unit 3 disposed above the outdoor unit main body 2. The outdoor unit main body 2 accommodates a compressor 10, an outdoor heat exchanger 11, two expansion valves 12A and 12B, and an outdoor fan 13. The interior of the outdoor unit main body 2 has a machine room 2 a that houses the compressor 10, and a blower room 2 b that houses the outdoor heat exchanger 11 and the outdoor fan 13. The water unit 3 accommodates a hot water supply heat exchanger (hot water supply water heat exchanger) 16A, a heating heat exchanger (heating water heat exchanger) 16B, a pump 17, and an electrical component box 50. Yes. The electrical component box 50 has a control board 57 for controlling the pump 17 inside. The internal space of the outdoor unit main body 2 and the internal space of the water unit 3 are partitioned by a partition plate 60. Inside the outdoor unit 1, a refrigerant circuit (heat pump) is configured. The refrigerant circuit includes a compressor 10, an outdoor heat exchanger 11, expansion valves 12A and 12B, a hot water supply heat exchanger 16A, The heating heat exchanger 16B is connected. The refrigerant circuit has two branch paths that branch at the branch section 18 disposed on the discharge side of the compressor 10 and merge at the junction section 19 disposed on the other end side of the outdoor heat exchanger 11. The two branch paths are a branch path where the hot water supply heat exchanger 16A and the expansion valve 12A are arranged, and a branch path where the heating heat exchanger 16B and the expansion valve 12B are arranged. The pump 17 supplies hot water for hot water flowing out from the hot water tank 5 to the hot water heat exchanger 16 </ b> A, and circulates hot water for hot water supplied to the hot water tank 5.

  The refrigerant inlet of the hot water supply heat exchanger 16A and the refrigerant inlet of the heating heat exchanger 16B are connected to the discharge side of the compressor 10, respectively. One end of the outdoor heat exchanger 11 is connected to the suction side of the compressor 10, and one end of the expansion valves 12A and 12B is connected to the other end of the outdoor heat exchanger 11, respectively. The other end of the expansion valve 12A is connected to the refrigerant outlet of the hot water supply heat exchanger 16B, and the other end of the expansion valve 12B is connected to the refrigerant outlet of the heating heat exchanger. Therefore, the branch 18 on the discharge side of the compressor 10 is connected to the refrigerant inlet of the hot water heat exchanger 16A, and the expansion valve 12A is connected to the refrigerant outlet of the hot water heat exchanger 16A. . Further, the branch side 18 on the discharge side of the compressor 10 is connected to the refrigerant inlet of the heating heat exchanger 16B, and the expansion valve 12B is connected to the refrigerant outlet of the hot water heat exchanger 16B. .

  The water unit 3 has a hot water supply water pipe connection part 20 and a heating water pipe connection part 21. The hot water supply water pipe connection portion 20 has an outward connection portion 20a and a return connection portion 20b, and the heating water pipe connection portion 21 has an outward connection portion 21a and a return connection portion 21b. Inside the water unit 3, the forward connection 20a of the hot water supply water pipe connection 20 is connected to the water inlet of the hot water supply heat exchanger 16A, and the return connection 20b of the hot water supply water pipe connection 20 is the hot water supply heat. It is connected to the water outlet of the exchanger 16A. Further, in the water unit 3, the forward connection portion 21a of the hot water supply water pipe connection portion 20 is connected to the water inlet of the hot water supply heat exchanger 16A, and the return connection portion 21b of the hot water supply water pipe connection portion 20 is connected to the hot water supply. It is connected to the water outlet of the heat exchanger for use 16A.

  Therefore, in the hot water supply heat exchanger 16A, heat is exchanged between the refrigerant flowing from the discharge-side branching portion 18 of the compressor 10 and the hot water supply hot water flowing from the return connection portion 20b of the hot water supply water pipe connection portion 20. Thus, the hot water for hot water supply is heated, and the heated hot water for hot water supply flows out toward the forward connection portion 20a of the hot water supply water pipe connection portion 20. In the heating heat exchanger 16B, heat is exchanged between the refrigerant flowing from the discharge-side branching portion 18 of the compressor 10 and the heating hot water flowing from the return connection portion 21b of the heating water pipe connection portion 21. Thus, the warm water for heating is heated, and the heated warm water for heating flows out toward the forward connection portion 21 a of the heating water pipe connection portion 21. In the temperature control system of this embodiment, the outdoor unit 1 can heat at least one of hot water for hot water supply and hot water for heating.

  In the temperature control system of the present embodiment, the use side device 4 includes a hot water supply tank 5, a gas boiler 6, a floor heating panel 7, and a pump 8. The gas boiler 6 has a heater 6 a and is connected to a floor heating panel 7 and a hot water supply terminal 9. Accordingly, the gas boiler 6 heats the hot water for hot water supplied from the hot water tank 5 before being supplied to the hot water supply terminal 9 or before the hot water for heating supplied from the outdoor unit 1 is supplied to the floor heating panel 7. Can be heated. The pump 8 supplies the heating hot water flowing out from the floor heating panel 7 to the heating heat exchanger 16 </ b> B, and circulates the heating hot water supplied to the floor heating panel 7.

  FIG. 3A is a diagram illustrating the internal configuration of the outdoor unit main body 2 and the water unit unit 3 when the outdoor unit 1 is viewed from the front, and FIG. 3B is a diagram illustrating the outdoor unit 1 viewed from above. It is a figure explaining the internal structure of the water unit part 3 at the time, FIG.3 (c) is arrangement | positioning of the hot water supply water pipe connection part 20 and the heating water pipe connection part 21 when the outdoor unit 1 is seen from the right side surface. FIG. As will be described later, the hot water supply heat exchanger 16A and the heating heat exchanger 16B are covered with a heat insulating material 70, but in FIG. 3, the heat insulating material 70 is not illustrated, and the hot water supply heat exchanger 16A is omitted. And the heat exchanger 16B for heating is shown in figure. Moreover, although the cover 2c which covers the hot water supply water pipe connection part 20 and the heating water pipe connection part 21 is arrange | positioned at the side surface of the outdoor unit 1, illustration is abbreviate | omitted in FIG.3 (c). FIG. 4 is a perspective view showing a state where the hot water supply heat exchanger 16A and the heating heat exchanger 16B are covered with the heat insulating material 70. FIG.

  The heating heat exchanger 16B has a heating water pipe 32 wound so as to be stacked in two stages in the vertical direction, and the hot water heat exchanger 16A is stacked in two stages in the vertical direction. It has the hot water supply water piping 31 wound like this. The hot water supply water pipe 31 and the heating water pipe 32 are wound in a substantially spiral shape at each stage in a plan view. A hot water supply return connection pipe 31a extending from the pump 17 (return connection part 20b of the hot water supply water pipe connection part 20) is connected to the water inlet of the hot water supply heat exchanger 16A, and the water outlet of the hot water supply heat exchanger 16A is connected. The hot water supply connection pipe 31b extending from the forward connection part 20a of the hot water supply water pipe connection part 20 is connected to the pipe. A heating return communication pipe 32a extending from the return connection part 21b of the heating water pipe connection part 21 is connected to the water inlet of the heating heat exchanger 16B, and the water outlet of the heating heat exchanger 16B is connected to the water outlet of the heating heat exchanger 16B. The heating outgoing communication pipe 32b extending from the outgoing connecting part 21a of the heating water pipe connecting part 21 is connected.

  In the hot water supply heat exchanger 16A, a hot water supply refrigerant pipe 33 is spirally wound around the outer periphery of the hot water supply water pipe 31, and in the heating heat exchanger 16B, a heating refrigerant is provided around the outer periphery of the heating water pipe 32. The pipe 34 is wound spirally. The inner diameters of the hot water supply refrigerant pipe 33 and the heating refrigerant pipe 34 are smaller than the inner diameters of the hot water supply water pipe 31 and the heating water pipe 32, respectively. The hot water supply heat exchanger 16A has a refrigerant inlet port connected to a hot water supply connection pipe 33a extending from the discharge-side branching portion 18 of the compressor 10, and the hot water supply heat exchanger 16A has an expansion port connected to the refrigerant outlet port. A hot water supply connecting pipe 33b extending from the valve 12A is connected. Further, a heating communication pipe 34a extending from the branch portion 18 on the discharge side of the compressor 10 is connected to the refrigerant inlet of the heating heat exchanger 16B, and the refrigerant outlet of the heating heat exchanger 16B is connected to the refrigerant inlet of the heating heat exchanger 16B. The heating communication pipe 34b extending from the expansion valve 12B is connected. In the present embodiment, the hot water supply heat exchanger 16A is a portion in which the hot water supply refrigerant pipe 33 is spirally wound around the outer periphery of the hot water supply water pipe 31, and the heating heat exchanger 16B is the outer periphery of the heating water pipe 32. It is assumed that the heating refrigerant pipe 34 is spirally wound.

  As shown in FIG. 5, the partition plate 60 has two openings 62 for attaching the electrical component box 50. The two openings 62 are arranged in a substantially rectangular shape and are separated from each other. In FIG. 5, the arrangement | positioning of the heat insulation material 70 which covers the electrical component box 50, the board | substrate 57 in the electrical component box 50, the heat exchanger 16A for hot water supply, and the heat exchanger 16B for heating is each shown by the dotted line.

  The electrical component box 50 has a substantially rectangular parallelepiped shape, and includes a bottom member 52 and a cover member 54. As shown in FIG. 6A, the bottom member 52 has a bottom surface 52 a attached to the partition plate 60 and a side surface 52 b along the control board 57. As shown in FIG. 6B, the cover member 54 has an upper surface 54 a that faces the bottom surface 52 a of the bottom member 52, and a side surface 54 b that faces the side surface 52 b of the bottom member 52. On the bottom surface 52a of the bottom member 52, as shown in FIG. 7A, there are two openings 53a and two locking portions 53b arranged to face the two openings 53a. . The latching | locking part 53b is a substantially rectangular shape, and is comprised by the plane smaller than the opening 53a. In FIG. 7, the locking portion 53b has a left end that extends downward from the left end of the opening 53a, and is thereafter configured in parallel with the bottom surface 52a.

  When the bottom member 52 is attached to the partition plate 60, the two locking portions 53 b of the bottom member 52 are disposed inside the two openings 62 of the partition plate 60. Thereafter, the bottom member 52 is moved upward in FIG. 5 with respect to the partition plate 60. Then, the bottom member 52 is positioned at a predetermined position on the partition plate 60 as shown in FIGS. In this state, the bottom member 52 is fixed to the partition plate 60 by screws (not shown).

  At this time, as shown in FIG. 9, the width of the root portion of the locking portion 53 b of the bottom surface 52 a of the bottom member 52 is narrower than the width of the two openings 62 of the partition plate 60. Therefore, two holes 55 are formed between the base portion of the locking portion 53 b of the bottom surface 52 a of the bottom member 52 and the two openings 62 of the partition plate 60. As described above, the hole 55 is formed around the locking portion 53 b when the locking portion 53 b is locked to the opening 62. The hole 55 is a hole through which air that has cooled the control board 57 flows, and is formed closer to the control board 57 than the hot water supply heat exchanger 16A and the heating heat exchanger 16B. In the present invention, the control board 57 side from the hot water supply heat exchanger 16A and the heating heat exchanger 16B refers to the control board 57 side from the part where the hot water supply heat exchanger 16A and the heating heat exchanger 16B are wound. means. In this embodiment, the hole 55 makes the water unit 3 internal space and the ventilation chamber 2b communicate.

  Therefore, in this embodiment, as shown in FIG. 10, the air around the outdoor unit 1 flows from the inside of the cover 2 c on the side of the outdoor unit 1 through the electrical component box 50 in the internal space of the water unit 3. , Flows into the blower chamber 2b through the hole 55. Thus, the air that has flowed into the internal space of the water unit 3 cools the control board 57 in the electrical component box 50, and then flows to a portion where the hot water supply heat exchanger 16A and the heating heat exchanger 16B are wound. Without flowing, it flows into the blower chamber 2b through the hole 55.

<Features of outdoor unit of this embodiment>
In the outdoor unit 1 of the present embodiment, since the holes 55 through which the air that has cooled the control board 57 flows are formed in the partition plate 60, the control board 57 in the internal space of the water unit 3 can be cooled. Therefore, it is possible to prevent the temperature of the control board 57 in the internal space of the water unit 3 from rising.

  In the outdoor unit 1 of the present embodiment, since the internal space of the water unit 3 and the air blowing chamber 2b communicate with each other through the hole 55, the air that has cooled the control board 57 toward the partition plate 60 is directed toward the air blowing chamber 2b. Easy to flow. Therefore, it is possible to prevent the temperature of the control board 57 in the internal space of the water unit 3 from rising.

  In the outdoor unit 1 of the present embodiment, since the hole 55 is formed around the locking portion 53b when the locking portion 53b is locked to the opening 62, the internal space of the water unit 3 and the blower chamber 2b are formed. Can be formed by locking the locking portion 53b of the electrical component box 50 to the opening 62 of the partition plate 60, without separately forming the hole 55 for communicating with the electrical component box 50.

  As mentioned above, although embodiment of this invention was described based on drawing, it should be thought that a specific structure is not limited to these embodiment. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes meanings equivalent to the scope of claims for patent and all modifications within the scope.

  In the above-described embodiment, the outdoor unit 1 including the partition plate 60 having the hole 55 for communicating the internal space of the water unit 3 and the blower chamber 2b has been described. However, as illustrated in FIG. The outdoor unit 101 may include a partition plate 160 having a hole 155 for communicating the space with the machine room 2a. In this case, as shown in FIG. 12, the hole 155 has a burring, and the blower chamber 2b and the machine chamber 2a communicate with each other. Therefore, in this modification, as shown in FIG. 13, the air around the outdoor unit 101 flows from the inside of the cover 2c on the side of the outdoor unit 101 through the electrical component box 150 in the internal space of the water unit 3, and thereafter , Flows to the machine room 2a through the hole 155, and flows from the machine room 2a to the blower room 2b. Thus, the air that has flowed into the internal space of the water unit 3 cools the control board 57 in the electrical component box 50, and then flows to a portion where the hot water supply heat exchanger 16A and the heating heat exchanger 16B are wound. Without flowing, it flows to the blower chamber 2b through the hole 155 and the machine chamber 2a. In this outdoor unit, since the internal space of the water unit 3 and the air blowing chamber 2b communicate with each other through the hole 155 and the machine room 2a, the air that has cooled the control board 57 toward the partition plate 160 is directed toward the air blowing chamber 2b. Easy to flow. Therefore, it is possible to prevent the temperature of the control board 57 in the internal space of the water unit 3 from rising. Moreover, since the hole 155 of the partition plate 160 has a burring, water can be prevented from entering the machine room 2a from the internal space of the water unit 3.

  In the above-described embodiment, the case where the hole 55 is formed around the locking portion 53b when the locking portion 53b is locked to the opening 62 has been described. However, the hole 55 may be formed separately. In the present invention, when the holes 55 through which air that has cooled the control board 57 flows are formed closer to the control board 57 than the hot water supply heat exchanger 16A and the heating heat exchanger 16B, the number and arrangement of the holes 55 are changed. You can do it.

  In the above-described embodiment, the case where the water unit 3 includes the heating heat exchanger 16B and the hot water supply heat exchanger 16A has been described. However, the water unit 3 includes any one of the heating heat exchanger 16B and the hot water supply heat exchanger 16A. You may have only

  If this invention is utilized, it can prevent that the temperature of the control board of the interior space of a water unit rises.

DESCRIPTION OF SYMBOLS 1,101 Outdoor unit 2 Outdoor unit body 2a Machine room 2b Blower chamber 3 Water unit 10 Compressor 11 Air heat exchanger 13 Outdoor fan 50 Electrical component box 53b Locking part 55, 155 Hole 60 Partition plate 62 Formed on partition plate Open

Claims (4)

An outdoor unit main body having a machine room that houses the compressor, an air heat exchanger that exchanges heat between the refrigerant and the outside air, and an air blowing chamber that houses an outdoor fan facing the air heat exchanger;
A water heat exchanger that is partitioned by a partition plate above the outdoor unit main body and that exchanges heat between refrigerant and water, and a water unit that houses a control board disposed on the side of the water heat exchanger. Prepared,
The outdoor unit, wherein the partition plate is formed with a hole through which air that has cooled the control board flows, closer to the control board than the water heat exchanger.   The outdoor unit according to claim 1, wherein the hole communicates the internal space of the water unit with the air blowing chamber. An electrical component box covering the control board;
The electrical component box has a locking portion that is locked to an opening formed in the partition plate,
The outdoor unit according to claim 2, wherein the hole is formed around the locking portion when the locking portion is locked to the opening. The hole communicates the internal space of the water unit with the machine room and has a burring.
The outdoor unit according to claim 1, wherein the blower chamber and the machine chamber communicate with each other.

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