JP2016085002A - Outdoor unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that it is difficult to share a heat insulating material covering the circumference of a water heat exchanger in an outdoor unit having only one of a hot water supply heat exchanger and a heating heat exchanger and an outdoor unit having both of the hot water supply heat exchanger and the heating heat exchanger.SOLUTION: An outdoor unit includes: a hot water supply heat exchanger 16A for exchanging heat between a refrigerant and hot water for hot water supply; and a heating heat exchanger 16B for exchanging heat between a refrigerant and hot water for heating. The hot water supply heat exchanger 16A and the heating heat exchanger 16B are in a layered state and the circumferences thereof are covered with a heat insulating material 60. The heat insulating material 60 includes: an intermediate member 61 disposed between the hot water supply heat exchanger 16A and the heating heat exchanger 16B; a lower member 62 disposed on the hot water supply heat exchanger 16A side relative to the intermediate member 61; and an upper member 63 disposed on the heating heat exchanger 16B side relative to the intermediate member 61. The intermediate member 61 and the lower member 62 are fitted while covering the circumference of the hot water supply heat exchanger 16A, and the intermediate member 61 and the upper member 63 are fitted while covering the circumference of the heating heat exchanger 16B.SELECTED DRAWING: Figure 8

Description

  The present invention relates to an outdoor unit provided with a heat exchanger for hot water supply and a heat exchanger for heating.

  Some conventional outdoor units (heat pump hot water heaters) include a refrigeration cycle in which refrigerant is circulated and a hot water supply circuit for storing or supplying hot water. The refrigeration cycle includes a water heat exchanger that exchanges heat between the refrigerant and water, and an outdoor air heat exchanger that exchanges heat between the refrigerant and outdoor air. In this heat pump hot water heater, a hot water supply operation is performed by storing hot water heated by heat exchange with a refrigerant in a water heat exchanger in a hot water storage tank.

  In addition, as a conventional outdoor unit (heat pump hot water heater), a refrigeration cycle in which refrigerant is circulated, a floor heating circuit for circulating hot water in the floor heating device, and a hot water supply circuit for storing or supplying hot water (Patent Document 1). The refrigeration cycle includes a water heat exchanger that exchanges heat between the refrigerant and water, and an outdoor air heat exchanger that exchanges heat between the refrigerant and outdoor air. In this heat pump hot water heater, the floor heating operation is performed by circulating hot water heated by heat exchange with the refrigerant in the water heat exchanger to the floor heating panel, and by heat exchange with the refrigerant in the water heat exchanger. A hot water supply operation is performed by storing heated hot water in a hot water storage tank.

JP2010-14352

  In the outdoor unit of Patent Document 1, the water heat exchanger is integrally configured by brazing the refrigerant pipe, the floor heating pipe, and the hot water supply pipe in contact with each other. Therefore, the configuration of the outdoor unit water heat exchanger that heats the hot water for hot water supply and the warm water for heating in Patent Document 1 is greatly different from the configuration of the outdoor unit water heat exchanger that heats only water for hot water supply. There is a problem that it is difficult to make common the heat insulating material covering the periphery of the water heat exchanger, and a dedicated product is necessary as the heat insulating material of each water heat exchanger.

  Therefore, an object of the present invention is to allow common use of a heat insulating material that covers the periphery of a water heat exchanger in an outdoor unit that heats hot water for hot water supply and warm water for heating and an outdoor unit that heats only water for hot water supply. It is to provide an outdoor unit.

  An outdoor unit according to a first aspect of the present invention includes an air heat exchanger that exchanges heat between a refrigerant and outside air, a hot water supply heat exchanger that exchanges heat between the refrigerant and hot water for hot water, and a refrigerant and hot water for heating. A heat exchanger for heating that exchanges heat with the heat exchanger, and the heat exchanger for hot water supply and the heat exchanger for heating are laminated and covered with a heat insulating material, and the heat insulating material is A first member disposed between the hot water heat exchanger and the heating heat exchanger; a second member disposed on the hot water heat exchanger side with respect to the first member; A third member disposed on the side of the heat exchanger for heating with respect to one member, and the first member and the second member cover the periphery of the heat exchanger for hot water supply. The first member and the third member are fitted in a state of covering the periphery of the heating heat exchanger. The features.

  In this outdoor unit, in an outdoor unit that includes only one of the heat exchanger for hot water supply and the heat exchanger for heating, and in an outdoor unit that includes both the heat exchanger for hot water supply and the heat exchanger for heating, the water heat exchanger A part of the heat insulating material covering the periphery can be shared. Specifically, for example, in an outdoor unit including only a hot water supply heat exchanger, the first member and the second member cover the periphery of the hot water supply heat exchanger, and both the hot water supply heat exchanger and the heating heat exchanger are covered. In the outdoor unit provided, when the first to third members cover the periphery of the hot water supply heat exchanger and the heating heat exchanger, the first member and the second member are shared as a heat insulating material that covers the periphery of the water heat exchanger. Can be

  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 second member and the third member cover the periphery of the heat exchanger for hot water supply or the heat exchanger for heating. It is comprised so that fitting is possible.

  In the outdoor unit, when the thickness of the second member and the third member is larger than the thickness of the first member, the outdoor unit including only one of the hot water supply heat exchanger and the heating heat exchanger, and the hot water supply heat In an outdoor unit that includes both an exchanger and a heat exchanger for heating, the second member and the third member can be shared as a heat insulating material that covers the periphery of the water heat exchanger. Therefore, since the thickness of the 2nd member and the 3rd member is thick, the heat insulation of a water heat exchanger can be performed more efficiently than the case where the 1st member and the 2nd member are made common.

  An outdoor unit according to a third aspect is the outdoor unit according to the first and second aspects, wherein the hot water heat exchanger and the heating heat exchanger are respectively connected to a refrigerant pipe and a water pipe. In addition, a first opening through which the refrigerant pipe and the water pipe pass is formed in a fitting portion between the first member and the second member, and the fitting between the first member and the third member is performed. The joint is formed with a second opening through which the refrigerant pipe and the water pipe pass, and the first opening and the second opening are arranged at the same position in the stacking direction.

  In this outdoor unit, the first opening of the fitting portion between the first member and the second member and the second opening of the fitting portion between the first member and the third member are arranged at the same position in the stacking direction. Therefore, it is easy to share the heat insulating material that covers the periphery of the water heat exchanger.

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

  In the first invention, in the outdoor unit including only one of the heat exchanger for hot water supply and the heat exchanger for heating, and in the outdoor unit including both the heat exchanger for hot water supply and the heat exchanger for heating, the water heat exchanger A part of the heat insulating material covering the periphery of can be shared. Specifically, for example, in an outdoor unit including only a hot water supply heat exchanger, the first member and the second member cover the periphery of the hot water supply heat exchanger, and both the hot water supply heat exchanger and the heating heat exchanger are covered. In the outdoor unit provided, when the first to third members cover the periphery of the hot water supply heat exchanger and the heating heat exchanger, the first member and the second member are shared as a heat insulating material that covers the periphery of the water heat exchanger. Can be

  In the second invention, when the thickness of the second member and the third member is larger than the thickness of the first member, an outdoor unit including only one of the hot water supply heat exchanger and the heating heat exchanger, and the hot water supply In an outdoor unit that includes both a heat exchanger and a heat exchanger for heating, the second member and the third member can be shared as a heat insulating material that covers the periphery of the water heat exchanger. Therefore, since the thickness of the 2nd member and the 3rd member is thick, the heat insulation of a water heat exchanger can be performed more efficiently than the case where the 1st member and the 2nd member are made common, for example.

  In 3rd invention, the 1st opening of the fitting part of a 1st member and a 2nd member and the 2nd opening of the fitting part of a 1st member and a 3rd member are in the same position about a lamination direction. Since it is arranged, it is easy to share a heat insulating material covering the periphery of the water heat exchanger.

It is a lineblock diagram showing the temperature control system of a 1st embodiment of the present 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 a heat pump part 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 portion and the heating water pipe connection portion when the outdoor unit is viewed from the right side surface. 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. Fig.5 (a) and FIG.5 (b) are the perspective views and side views of a heat exchanger for hot water supply, and a heat exchanger for heating. Fig.6 (a) is a perspective view of the heat exchanger for heating, and FIG.6 (b) is a perspective view of the heat exchanger for hot water supply. FIG. 7A and FIG. 7B are diagrams for explaining the temperature difference between the hot water supply heat exchanger and the heating heat exchanger according to the present invention and the comparative example. FIG. 8A and FIG. 8B are a side view and a cross-sectional view of a heat insulating material arranged around the hot water supply heat exchanger and the heating heat exchanger.

(First embodiment)
Hereinafter, a first embodiment 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 a first 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 and 2, the outdoor unit 1 includes a heat pump unit 2 and a water unit unit 3 disposed above the heat pump unit 2. The heat pump unit 2 accommodates a compressor 10, an outdoor heat exchanger 11, two expansion valves 12A and 12B, and an 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, and a pump 17. 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 heat pump unit 2 and the water unit unit 3 when the outdoor unit 1 is viewed from the front, and FIG. 3B is a diagram of the outdoor unit 1 viewed from above. FIG. 3 (c) is a diagram for explaining the internal configuration of the water unit 3 when the outdoor unit 1 is viewed from the right side, and shows the arrangement of the hot water supply water pipe connection 20 and the heating water pipe connection 21. It is a figure explaining. 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 50. However, in FIG. 3, the heat insulating material 50 is not shown, and the hot water supply heat exchanger 16A is omitted. And the heat exchanger 16B for heating is shown in figure. Moreover, the cover 2a 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, but illustration is abbreviate | omitted in FIG.3 (c).

  FIG. 4 is a perspective view of a state in which the hot water supply heat exchanger 16A and the heating heat exchanger 16B are covered with a heat insulating material 67. FIGS. 5A and 5B show the hot water supply heat exchanger 16A. FIG. 4 is a perspective view and a side view of the heat exchanger 16B for heating, and is a state in which the illustration of the heat insulating material 60 is omitted in FIG. Inside the water unit 3 of the outdoor unit 1, the hot water supply heat exchanger 16 </ b> A and the heating heat exchanger 16 </ b> B are surrounded by a heat insulating material 60 in a state of being stacked vertically as shown in FIGS. 4 and 5. Covered.

  FIG. 6A is a perspective view of a heating heat exchanger 16B, and FIG. 6B is a perspective view of a hot water heat exchanger 16A. As shown in FIG. 6 (a), the heating heat exchanger 16B has a heating water pipe that is wound so as to be stacked in two stages in the vertical direction. As shown in FIG.6 (b), it has the hot water supply water piping wound so that it may be laminated | stacked on two steps in the up-down direction. The hot water supply water pipe and the heating water pipe are wound in a substantially spiral shape at each stage in 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. A hot water return communication pipe 33a extending from the discharge-side branch 18 of the compressor 10 is connected to the refrigerant inlet of the hot water heat exchanger 16A, and a refrigerant outlet of the hot water heat exchanger 16A is A hot water supply connecting pipe 33b extending from the expansion valve 12A is connected. Also, a heating return communication pipe 34a extending from the branch 18 on the discharge side of the compressor 10 is connected to the refrigerant inlet of the heating heat exchanger 16B, and is connected to the refrigerant outlet of the heating heat exchanger 16B. Is connected to a heating forward communication pipe 34b extending from the expansion valve 12B.

  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. 6 (b), the hot water supply water pipe 31 of the hot water supply heat exchanger 16A is wound so as to be stacked in two stages in the vertical direction, and from the hot water return connection pipe 31a. The hot water for hot water supply flows into the pipe located at the lower stage, and the hot water for hot water flows out from the pipe located at the upper stage to the hot water supply connection pipe 31b. . As shown in FIG. 6A, the heating water pipe 32 of the heating heat exchanger 16B is wound so as to be stacked in two stages in the vertical direction, and is connected to the heating return communication pipe 32a. The warm water for heating flows into the pipe located at the lower stage, and the warm water for heating flows out from the pipe located at the upper stage to the outgoing communication pipe 31b for heating. .

  The hot water supply water pipe 31 of the hot water supply heat exchanger 16 </ b> A and the heating water pipe 32 of the heating heat exchanger 16 </ b> B configured as described above are stacked inside the water unit 3. Specifically, the hot water supply heat exchanger 16A is wound so as to be stacked in two stages, and is configured such that hot water for hot water supply flows out from a pipe (outer pipe) in the uppermost stage. The heating heat exchanger 16B is stacked above the hot water supply heat exchanger 16A (for hot water supply so as to be close to the pipe (outer pipe) at the uppermost stage in the hot water supply water pipe 31). (It is laminated on the heat exchanger 16A.)

  Next, the temperature difference between the hot water supply heat exchanger 16A and the heating heat exchanger 16B will be described with reference to FIG.

  FIG. 7A shows the configuration of the present invention, in which the heating heat exchanger 16B is stacked above the hot water supply heat exchanger 16A, and FIG. 7B shows the configuration of the comparative example. In this case, the hot water supply heat exchanger 16A is stacked above the heating heat exchanger 16B. Thus, in the present invention and the comparative example, the heating heat exchanger 16B is upside down from the hot water supply heat exchanger 16A.

  Here, hot water for hot water supply at T1 (° C.) flows into the hot water supply water pipe 31 of the hot water supply heat exchanger 16A from the hot water supply return connection pipe 31a into the pipe located at the lower side, and the upper side The hot water for hot water supply at T1 ′ (° C.) flows out from the pipe at the stage arranged in the hot water to the hot water supply connection pipe 31b, and returns to the heating water pipe 32 of the heating heat exchanger 16B. From the pipe located in the lower stage, the warm water for heating at T2 (° C.) flows, and from the pipe located in the upper stage to the outgoing communication pipe 31b for heating, T2 ′ (° C. ) Consider the case where hot water for heating flows out.

  In the temperature control system of the present embodiment, the temperature T1 (° C.) of hot water hot water flowing into the hot water supply water pipe 31 of the hot water supply heat exchanger 16A changes based on, for example, the outside air temperature (for example, T1 = outside air temperature). For example, the temperature T1 ′ (° C.) of hot water for hot water flowing out from the hot water supply water pipe 31 of the hot water supply heat exchanger 16A is set to the temperature of hot water stored in the hot water supply tank 5 (temperature of hot water discharged from the hot water supply terminal) It is thought that it changes based on. Moreover, the temperature T2 (° C.) of the heating hot water flowing into the heating water pipe 32 of the heating heat exchanger 16B is, for example, the room temperature of the room where the heating is performed (the temperature of the hot water supplied to the floor heating panel 7). The temperature T2 ′ (° C.) of the heating hot water flowing out from the heating water pipe 32 of the heating heat exchanger 16B is considered to change in the room in which the heating is performed, for example, T2 = room temperature + α. It is thought to change based on temperature.

  Therefore, in the temperature control system of the present embodiment, considering that the outside air temperature is low and the room is heated, the temperature T1 (° C.) of hot water for hot water flowing into the hot water supply heat exchanger 16A is It is considered that the temperature T2 (° C.) is lower than the temperature T2 (° C.) of the hot water flowing into the heat exchanger 16B, and other T1 ′ (° C.), T2 (° C.), and T2 ′ (° C.) A lower temperature is considered. In FIG. 6, as examples of T1 (° C.), T1 ′ (° C.), T2 (° C.), and T2 ′ (° C.), cases of 9 ° C., 47 ° C., 30 ° C., and 40 ° C. are illustrated.

  When the heating heat exchanger 16B is stacked above the hot water supply heat exchanger 16A as in the present invention, as shown in FIG. 7A, the hot water supply heat exchanger 16A and the heating heat exchanger 16A are heated. When the temperature difference with respect to the exchanger 16B is 17 ° C., the hot water supply heat exchanger 16A is stacked above the heating heat exchanger 16B as in the comparative example. As shown to (a), the temperature difference between the heat exchanger 16A for hot water supply and the heat exchanger 16B for heating is 31 degreeC. Therefore, in this invention, it turns out that the temperature difference between the heat exchanger 16A for hot water supply and the heat exchanger 16B for heating is small from a comparative example.

  Next, the structure of the heat insulating material 60 arrange | positioned around the heat exchanger 16A for hot water supply and the heat exchanger 16B for heating is demonstrated based on FIG.

  The hot water supply heat exchanger 16 </ b> A and the heating heat exchanger 16 </ b> B are covered with a heat insulating material 60 while being stacked in the vertical direction. As shown in FIG. 8A, the heat insulating material 60 includes an intermediate member 61 disposed between the hot water supply heat exchanger 16 </ b> A and the heating heat exchanger 16 </ b> B, and hot water supply heat exchange with respect to the intermediate member 61. A lower member 62 disposed on the side of the heater 16A, and an upper member 63 disposed on the heating heat exchanger 16B side with respect to the intermediate member 61. Accordingly, the hot water supply heat exchanger 16A is covered with the intermediate member 61 and the lower member 62, and the heating heat exchanger 16B is covered with the intermediate member 61 and the upper member 63. The thickness of the lower member 62 and the upper member 63 in the vertical direction is configured to be thicker than the thickness of the intermediate member 61 in the vertical direction.

  A water communication pipe (a hot water supply return communication pipe 31a and a hot water supply return communication pipe 31b) and a refrigerant communication pipe (a hot water supply return communication pipe 33a and a hot water supply return communication pipe 33b) are connected to the hot water supply heat exchanger 16A. The heating heat exchanger 16B includes a water communication pipe (a heating return communication pipe 32a and a heating forward communication pipe 32b) and a refrigerant communication pipe (a heating return communication pipe 34a and a heating forward communication pipe 34b). ) And are connected.

  As shown in FIG. 4, the fitting portion between the intermediate member 61 and the lower member 62 is formed with an opening 65 through which the water communication pipe and the refrigerant communication pipe pass, and the intermediate member 61 and the upper member 63 are fitted. In the joint portion, an opening 66 through which the water communication pipe and the refrigerant communication pipe pass is formed. The opening 65 and the opening 66 are disposed at the same position in the stacking direction (in plan view).

  FIG. 8B is a cross-sectional view of the heat insulating material 60 in a state of covering the periphery of the hot water supply heat exchanger 16A and the heating heat exchanger 16B. The lower member 62 has a concave portion 62a in which the hot water supply heat exchanger 16A is disposed, and a wall portion 62b is provided around the concave portion 62a (excluding the portion of the opening 65). A protruding portion 62c is disposed on the inner peripheral side portion of the upper end of the wall portion 62b. The intermediate member 61 is a plate-like member that is disposed so as to close the recess 62 a of the lower member 62. A projecting portion 61 c that faces the upper end of the wall portion 62 b of the lower member 62 is provided on the outer peripheral portion (except for the opening 65) of the lower surface of the intermediate member 61. The inner peripheral surface of the protrusion 61c and the outer peripheral surface of the protrusion 62c of the lower member 62 are configured to have substantially the same shape and size. Therefore, the intermediate member 61 and the lower member 62 are fitted so as to cover the periphery of the hot water supply heat exchanger 16A.

  The upper member 63 has a recessed portion 63a in which the hot water supply heat exchanger 16B is disposed, and a wall portion 63b is provided around the recessed portion 63a (excluding the portion of the opening 66). A protrusion 63c is disposed on the outer peripheral side portion of the lower end of the wall 63b. The intermediate member 61 is a plate-like member that is disposed so as to close the recess 63 a of the upper member 63. A projecting portion 61 d that faces the lower end of the wall portion 63 b of the upper member 63 is provided on the outer peripheral portion (excluding the opening 66 portion) of the upper surface of the intermediate member 61. The outer peripheral surface of the protrusion 61d and the inner peripheral surface of the protrusion 63c of the upper member 63 are configured to have substantially the same shape and size. Therefore, the intermediate member 61 and the upper member 63 are fitted in a state of covering the periphery of the heating heat exchanger 16B.

  In the present embodiment, the outer peripheral surface of the protruding portion 62c of the lower member 62 and the inner peripheral surface of the protruding portion 63c of the upper member 63 are configured to have substantially the same shape and size. Therefore, the intermediate member 61 and the lower member 62 are fitted, the intermediate member 61 and the upper member 63 are fitted, and the lower member 62 and the upper member 63 are fitted. Thus, since the lower member 62 and the upper member 63 are configured to be fitted, for example, when only one of the hot water supply heat exchanger 16A and the heating heat exchanger 16B is used, The member 62 and the upper member 63 can be fitted so as to cover the periphery of the heat exchanger.

<Features of outdoor unit of this embodiment>
In the outdoor unit 1 of the present embodiment, an outdoor unit that includes only one of the hot water supply heat exchanger 16A and the heating heat exchanger 16B, and an outdoor unit that includes both the hot water supply heat exchanger 16A and the heating heat exchanger 16B. In the machine, a part of the heat insulating material covering the periphery of the water heat exchanger can be shared. Specifically, for example, in an outdoor unit including only the hot water supply heat exchanger 16A, the intermediate member 61 and the lower member 62 cover the periphery of the hot water supply heat exchanger 16A, and the hot water supply heat exchanger 16A and the heat exchange for heating. In the outdoor unit including both of the heaters 16B, when the periphery of the hot water heat exchanger 16A and the heating heat exchanger 16B is covered by the intermediate member 61, the lower member 62, and the upper member 63, the periphery of the water heat exchanger is covered. As the heat insulating material 60, the intermediate member 61 and the lower member 62 can be shared.

  In the outdoor unit 1 of the present embodiment, the thickness of the lower member 62 and the upper member 63 is larger than the thickness of the intermediate member 61. In this case, only one of the hot water supply heat exchanger 16A and the heating heat exchanger 16B is used. The lower member 62 and the upper member 63 are used as a heat insulating material that covers the periphery of the water heat exchanger in the outdoor unit 1 that includes both the hot water supply heat exchanger 16A and the heating heat exchanger 16B. it can. Therefore, since the thickness of the lower member 62 and the upper member 63 is large, for example, the heat insulation of the water heat exchanger can be performed more efficiently than when the intermediate member 61 and the lower member 62 are used in common.

  In the outdoor unit 1 of the present embodiment, the opening 65 of the fitting portion between the intermediate member 61 and the lower member 62 and the opening 66 of the fitting portion between the intermediate member 61 and the upper member 63 are at the same position in the stacking direction. Therefore, it is easy to share the heat insulating material that covers the periphery of the water heat exchanger.

  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 heating heat exchanger 16B is stacked above the hot water supply heat exchanger 16A, and the heating heat exchanger 16B The hot water supply heat exchanger 16A has been described with reference to the case where the hot water supply hot water flows in from the lowermost stage and flows out from the uppermost stage. Even if the arrangement of the heat exchanger 16B and the flow direction of the hot water in each heat exchanger are different, the same effect as the present invention can be obtained.

  Therefore, the hot water supply heat exchanger 16A and the heating heat exchanger 16B may be stacked in a direction other than the vertical direction (for example, in the horizontal direction). Further, the heating heat exchanger 16B is stacked above the hot water supply heat exchanger 16A, and the heating heat exchanger 16B has the heating water flowing in from the uppermost stage and flowing out from the lowermost stage. (In this embodiment, the flow direction of the hot water for heating is opposite), and the hot water supply heat exchanger 16A flows in the hot water for hot water from the lowermost stage and flows out from the uppermost stage. It's okay. Further, the hot water supply heat exchanger 16A is stacked above the heating heat exchanger 16B, and the hot water supply heat exchanger 16A has the hot water supply water flowing in from the lowermost stage and flowing out from the uppermost stage. (The flow direction of the warm water for heating in the heat exchanger 16B for heating may be from the bottom to the top or from the top to the bottom). Further, the hot water supply water pipe 31 of the hot water supply heat exchanger 16A may have a plurality of stages, and the heating water pipe 32 of the heating heat exchanger 16B may not have a plurality of stages. Further, the heating heat exchanger 16B is separated from the pipe (outer pipe) at the uppermost stage so as to be close to the pipe at the lowermost stage in the hot water heat exchanger 16A. And so on) may be stacked on the hot water supply heat exchanger 16A.

  In the above-described embodiment, the case where the intermediate member 61 and the upper member 63 are fitted and the lower member 62 and the upper member 63 are fitted is described. However, the lower member 62 and the upper member 63 are configured. And may not be configured to fit together.

  In the above-described embodiment, the case where the heating hot water heated in the heating heat exchanger 16B is supplied to the floor heating panel 7 has been described. However, the heating hot water heated in the heating heat exchanger 16B is the floor heating. You may supply to heating apparatuses other than a panel.

  INDUSTRIAL APPLICABILITY By using the present invention, in an outdoor unit that includes only one of a heat exchanger for hot water supply and a heat exchanger for heating, and in an outdoor unit that includes both a heat exchanger for hot water supply and a heat exchanger for heating, A part of the heat insulating material covering the periphery of the vessel can be shared.

DESCRIPTION OF SYMBOLS 1 Outdoor unit 2 Heat pump part 3 Water unit part 10 Compressor 11 Air heat exchanger 16A Hot water supply heat exchanger 16B Heating heat exchanger 31 Hot water supply water pipe 31a Hot water supply return connection pipe (water communication pipe)
31b Outward communication piping for hot water supply (water communication piping)
32 Heating water piping 32a Hot water supply return communication piping (water communication piping)
32b Outward communication piping for hot water supply (water communication piping)
33b Outward connection piping for hot water supply (refrigerant connection piping)
33a Return connection piping for hot water supply (refrigerant connection piping)
34a Return connection piping for heating (refrigerant connection piping)
34b Outward connection piping for heating (refrigerant connection piping)
60 Thermal insulation material 61 Intermediate member (first member)
62 Lower member (second member)
63 Upper member (third member)
65 opening (first opening)
66 opening (second opening)

Claims (3)

An air heat exchanger for exchanging heat between the refrigerant and the outside air;
A hot water supply heat exchanger for exchanging heat between the refrigerant and hot water for hot water supply;
A heating heat exchanger that exchanges heat between the refrigerant and hot water for heating,
The hot water heat exchanger and the heating heat exchanger are stacked and covered with a heat insulating material,
The heat insulating material is
A first member disposed between the hot water heat exchanger and the heating heat exchanger;
A second member disposed on the hot water heat exchanger side with respect to the first member;
A third member disposed on the heating heat exchanger side with respect to the first member,
The first member and the second member are fitted in a state of covering the periphery of the heat exchanger for hot water supply,
The outdoor unit, wherein the first member and the third member are fitted in a state of covering the periphery of the heat exchanger for heating.   2. The outdoor unit according to claim 1, wherein the second member and the third member are configured to be fitted in a state of covering a periphery of the hot water supply heat exchanger or the heating heat exchanger. Machine. The hot water heat exchanger and the heating heat exchanger are connected to a refrigerant communication pipe and a water communication pipe, respectively.
The fitting portion between the first member and the second member is formed with a first opening through which the refrigerant communication pipe and the water communication pipe pass,
The fitting portion between the first member and the third member is formed with a second opening through which the refrigerant communication pipe and the water communication pipe pass,
The outdoor unit according to claim 1 or 2, wherein the first opening and the second opening are arranged at the same position in the stacking direction.

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