JP6747614B2 - Heat pump hot water outdoor unit - Google Patents

Description

The present invention relates to a heat pump hot water supply outdoor unit.

A heat pump hot water supply system that uses heat from the atmosphere and is excellent in energy efficiency is widely used. The heat pump hot water supply outdoor unit of the heat pump hot water supply system has an evaporator that absorbs heat of the atmosphere into the refrigerant, a propeller fan that blows air to the evaporator, a compressor that compresses the refrigerant, and heats water with the compressed high-temperature and high-pressure refrigerant. It is equipped with a water-refrigerant heat exchanger. In order to reduce noise generated during operation, the circumference of the compressor is covered with a soundproof material. The compressor is installed on the bottom plate that is the base of the heat pump hot water supply outdoor unit. Water condensed on the surface of the evaporator may flow down and accumulate on the bottom plate. Such water is called "drain". The soundproofing material includes a substance having a water absorbing property such as felt. If the soundproofing material absorbs the drain, the moisture may corrode the compressor. When the soundproof material absorbs the drain, the soundproofing property of the soundproof material may be deteriorated. It is desirable that the soundproof material does not touch the drain accumulated on the bottom plate so that the soundproof material does not absorb the drain.

The outdoor unit disclosed in Patent Document 1 below is configured as follows. The soundproof material that covers the side surface of the compressor includes a sound absorbing material having water absorbency. The bottom plate on which the compressor is installed has a soundproof material mounting portion on which the soundproof material is mounted, and a peripheral portion which is located around the soundproof material mounting portion and integrally molded with the soundproof material mounting portion. .. The soundproof material mounting portion is located higher than the surrounding portion. With this configuration, even if the drain flows down and collects on the peripheral portion of the bottom plate, the drain is prevented from coming into contact with the soundproof material mounted on the soundproof material mounting portion. This suppresses the permeation of drain into the sound absorbing material.

Japanese Patent Laid-Open No. 2013-53827

The outdoor unit of Patent Document 1 has the following problems. Depending on the installation environment such as a veranda or dog running, the outdoor unit may be installed while being inclined toward the compressor. In this case, the drainage flowing down to the bottom plate may be accumulated in the corner portion on the compressor side, so that the soundproof material may be dipped in the drain. When the soundproofing material absorbs water, there may be problems that the shell of the compressor is corroded and the soundproofing property of the soundproofing material is deteriorated.

The present invention has been made to solve the above problems, and can prevent the soundproof material covering the side surface of the compressor from absorbing the water accumulated on the bottom plate regardless of the installation environment. An object is to provide a heat pump outdoor unit.

The heat pump hot water supply outdoor unit according to the present invention includes a bottom plate having a rectangular bottom surface, a compressor for compressing the refrigerant, a soundproof material for covering the side surfaces of the compressor, and a soundproof material for the compressor on the bottom plate. And a soundproof material mounting portion for keeping the position of the lower end of the above at a position higher than the bottom surface. Then, the soundproof material mounting portion is configured to cover the corner of the bottom plate closest to the compressor , and the soundproof material mounting portion is configured to surround the periphery of the compressor in an arc shape. The heat pump hot water supply outdoor unit is configured such that the soundproof material mounting portion can be arranged on the bottom plate in a state where the compressor is arranged on the bottom plate .

According to the heat pump hot water supply outdoor unit of the present invention, among the corners of the bottom plate, the corner closest to the compressor is covered with the soundproof material mounting portion. Therefore, it is possible to prevent the soundproof material covering the side surface of the compressor from immersing in the drain accumulated in the corner portion. As a result, it is possible to prevent the shell of the compressor from being corroded and the soundproofing from being deteriorated regardless of the installation environment.

FIG. 1 is a piping system diagram of a heat pump hot water supply system including the heat pump hot water supply outdoor unit according to the first embodiment. FIG. 3 is a perspective view showing an external appearance of the heat pump hot water supply outdoor unit according to the first embodiment. FIG. 3 is an exploded perspective view of the heat pump hot water supply outdoor unit according to the first embodiment. FIG. 3 is an exploded perspective view showing a bottom plate, a compressor and the like included in the heat pump hot water supply outdoor unit according to the first embodiment. FIG. 3 is a perspective view showing a bottom plate, a compressor, a soundproofing material and the like included in the heat pump hot water supply outdoor unit according to the first embodiment. FIG. 3 is a cross-sectional view of the compressor, the bottom plate, the soundproof material mounting portion, the soundproof material, and the like according to the first embodiment. FIG. 3 is a perspective view of the soundproof material mounting portion before being attached to the compressor according to the first embodiment as viewed from above. FIG. 3 is a perspective view of the soundproof material mounting portion before being attached to the compressor according to the first embodiment as viewed from below. FIG. 3 is a diagram in which the internal structure of the heat pump hot water supply outdoor unit to which the soundproof material mounting portion according to Embodiment 1 is attached is seen through from the upper surface side.

Hereinafter, embodiments will be described with reference to the drawings. Elements common to each drawing are denoted by the same reference numerals to simplify or omit redundant description. The present disclosure may include any combination of configurations that can be combined, among the configurations described in the following embodiments.

Embodiment 1.
FIG. 1 is a piping system diagram of a heat pump hot water supply system including the heat pump hot water supply outdoor unit according to the first embodiment. As shown in FIG. 1, heat pump hot water supply system 100 includes heat pump hot water supply outdoor unit 10 and tank unit 50. The heat pump hot water supply outdoor unit 10 is installed outdoors. The tank unit 50 may be installed outdoors or indoors.

The heat pump hot water supply outdoor unit 10 includes a compressor 2, a heat exchanger 3, a first expansion valve 4a, a second expansion valve 4b, an evaporator 5, an internal heat exchanger 6, and a blower 7. The heat pump hot water supply outdoor unit 10 includes a refrigerant circuit, and operates a refrigeration cycle, that is, a heat pump cycle. The compressor 2 compresses the low pressure refrigerant gas. The refrigerant may be carbon dioxide, for example. The heat exchanger 3 exchanges heat between the high temperature and high pressure refrigerant discharged from the compressor 2 and water or another liquid heat medium. The liquid heat medium may be, for example, a calcium chloride aqueous solution, an ethylene glycol aqueous solution, an alcohol, or the like.

The first expansion valve 4a and the second expansion valve 4b are examples of decompression devices that decompress high-pressure refrigerant into low-pressure refrigerant. The depressurized low pressure refrigerant is in a gas-liquid two-phase state. The evaporator 5 is a heat exchanger that exchanges heat between the low-pressure refrigerant and the atmosphere. In the evaporator 5, the low pressure refrigerant is evaporated by absorbing the heat of the atmosphere. By the blower 7 blowing air to the evaporator 5, heat exchange in the evaporator 5 can be promoted. The internal heat exchanger 6 includes a high pressure passage and a low pressure passage. The internal heat exchanger 6 exchanges heat between the high pressure refrigerant flowing through the high pressure passage and the low pressure refrigerant flowing through the low pressure passage. The low-pressure refrigerant gas evaporated in the evaporator 5 is sucked into the compressor 2 via the low-pressure flow path of the internal heat exchanger 6.

In the refrigerant circuit according to the present embodiment, the refrigerant that has passed through the heat exchanger 3 reaches the evaporator 5 via the high-pressure flow path of the internal heat exchanger 6, and the refrigerant that has passed through the heat exchanger 3. Of the second path 9 to the evaporator 5 without passing through the internal heat exchanger 6. The first expansion valve 4a is installed in the first path 8 downstream of the high pressure flow path of the internal heat exchanger 6. The second expansion valve 4b is installed in the second path 9. By adjusting the opening degrees of the first expansion valve 4a and the second expansion valve 4b, the flow rate of the refrigerant from the heat exchanger 3 to the evaporator 5 via the internal heat exchanger 6 and the inside of the heat exchanger 3 can be adjusted. The ratio with the flow rate of the refrigerant reaching the evaporator 5 can be changed without passing through the heat exchanger 6.

The tank unit 50 includes a hot water storage tank 52, a water pump 53, a flow path switching valve 54, and a bypass flow path 55. The heat pump hot water supply outdoor unit 10 and the tank unit 50 are connected via external pipes 56 and 57.

Hot water before heating and hot water after heating are stored in the hot water storage tank 52. In the hot water storage tank 52, a temperature stratification is formed in which the upper side is high temperature and the lower side is low temperature due to the difference in specific gravity of water due to temperature. A hot water supply pipe (not shown) for supplying hot water to terminals such as a hot water tap, a shower, and a bathtub is connected to the upper portion of the hot water storage tank 52. A water supply pipe (not shown) for supplying water from a water source such as a tap is connected to the lower portion of the hot water storage tank 52. When hot water is supplied from the hot water storage tank 52, the hot water in the upper part of the hot water storage tank 52 is delivered to the hot water supply pipe by the water pressure acting from the water supply pipe into the hot water storage tank 52. The same amount of water as the hot water flowing out to the hot water supply pipe flows into the hot water storage tank 52 from the water supply pipe, so that the hot water storage tank 52 is kept full.

The lower part of the hot water storage tank 52 is connected to the inlet of the water pump 53 via a conduit. The outlet of the water pump 53 is connected to the flow path switching valve 54. The flow path switching valve 54 is connected to the water inlet of the heat exchanger 3 of the heat pump hot water supply outdoor unit 10 via the external pipe 56.

The heat pump hot water supply system 100 can perform a heat storage operation in which the hot water heated by the heat pump hot water supply outdoor unit 10 is stored in the hot water storage tank 52. At the time of heat storage operation, it becomes as follows. The compressor 2, the blower 7, and the water pump 53 are operated. Water flowing out from the lower portion of the hot water storage tank 52 flows into the heat exchanger 3 of the heat pump hot water supply outdoor unit 10 through the water pump 53, the flow path switching valve 54, and the external pipe 56. This water is heated by the refrigerant in the heat exchanger 3 to become hot water. The temperature of the hot water heated by the heat exchanger 3 may be, for example, about 65°C to 90°C. The hot water flowing out of the heat exchanger 3 returns to the tank unit 50 through the external pipe 57, and flows into the upper part of the hot water storage tank 52 through the tank upper pipe 58.

The flow passage switching valve 54 can switch the flow passage so that the water discharged from the water pump 53 flows into the tank upper pipe 58 through the bypass flow passage 55 instead of the heat pump hot water supply outdoor unit 10. is there.

The heat pump hot water supply outdoor unit of the present invention is not limited to one constituting a part of the hot water supply system such as the heat pump hot water supply system 100, but may be used for heating the liquid heat medium in a hot water heating system, for example. That is, the liquid heat medium heated by the heat pump hot water supply outdoor unit of the present invention, for example, a floor heating panel installed under the floor, a radiator or panel heater installed on the indoor wall surface, or a heating device such as a fan convector. May be supplied.

FIG. 2 is a perspective view showing the appearance of heat pump hot water supply outdoor unit 10 of the first embodiment. FIG. 3 is an exploded perspective view of heat pump hot water supply outdoor unit 10 of the first embodiment. As shown in FIG. 2, the heat pump hot water supply outdoor unit 10 includes a plurality of legs 41. The legs 41 are fixed to the ground or floor.

As shown in FIG. 3, the heat pump hot water supply outdoor unit 10 includes a bottom plate 18, a front panel 19, a side panel 20, and a top panel 21. The bottom plate 18, the front panel 19, the side panel 20, and the top panel 21 form an outer shell of the heat pump hot water supply outdoor unit 10, that is, a housing. The bottom plate 18, the front panel 19, the side panel 20, and the top panel 21 are preferably made of metal. The bottom plate 18 corresponds to the base or frame of the heat pump hot water supply outdoor unit 10. The components such as the compressor 2 are mounted on the bottom plate 18. Legs 41 are fixed to the lower surface of the bottom plate 18.

The front panel 19 covers the front surface and the left side surface of the heat pump hot water supply outdoor unit 10. The side panel 20 covers a part of the rear surface and the right side surface of the heat pump hot water supply outdoor unit 10. Top panel 21 covers the upper surface of heat pump hot water supply outdoor unit 10.

The evaporator 5 is arranged so as to cover the rear surface and the left side surface of the heat pump hot water supply outdoor unit 10. The blower 7 is arranged between the evaporator 5 and the front panel 19. Blower 7 in the present embodiment includes a propeller fan. The inside of the outer shell of the heat pump hot water supply outdoor unit 10 is partitioned into a blower chamber 15 in which the blower 7 is located and a machine chamber 14. A partition plate 16 separates the blower room 15 and the machine room 14. The compressor 2, the refrigerant pipe, and the like are arranged in the machine room 14. In FIG. 3, illustration of soundproofing materials 32 and 33 described later is omitted. A case 13 is arranged below the blower 7. The heat exchanger 3 is housed in the case 13 while being covered with a heat insulating material.

The front panel 19 has an opening at a position facing the blower 7. A grill 23 covering this opening is attached to the front panel 19. When the blower 7 is operated, the outside air, that is, the atmosphere, passes through the evaporator 5, flows into the blower chamber 15, and is discharged from the grill 23 to the outside of the heat pump hot water supply outdoor unit 10.

The heat pump hot water supply outdoor unit 10 includes an electric component storage box 17. The electrical component storage box 17 is arranged in a space occupying a part of the upper part of the blower chamber 15 and the upper part of the machine chamber 14. In the electric component storage box 17, for example, electric components such as an inverter power source for driving and controlling the motor of the compressor 2 and the motor of the blower 7 are stored. There is a terminal block near the electric component storage box 17. A terminal block is used when connecting external electrical wiring. The service panel 22 is detachably attached to the side panel 20. The service panel 22 protects the terminal block. Below the service panel 22, the connection cover 42 is detachably attached to the side panel 20. The connection portion cover 42 protects a connection portion (not shown) to which the external pipes 56 and 57 are connected.

FIG. 4 is an exploded perspective view showing bottom plate 18, compressor 2 and the like provided in heat pump hot water supply outdoor unit 10 of the first embodiment. As shown in FIG. 4, the bottom plate 18 has a shape in which a plurality of irregularities, steps, slopes, etc. having a height difference of, for example, about 1 cm are formed. The bottom plate 18 has a rectangular bottom surface 181 and an edge portion 182 extending upward from each side of the bottom surface 181. The bottom plate 18 may be formed by press working such as drawing. The bottom plate 18 has water impermeability.

The bottom plate 18 is formed with a plurality (two in the present embodiment) of drain holes 36 for draining the drain. The drain hole 36 is preferably located at the lowest position in the bottom plate 18. The number of drain holes 36 may be two or more. When the heat pump hot water supply outdoor unit 10 is in operation, the temperature of the evaporator 5 becomes low, so that water contained in the air passing through the evaporator 5 may be condensed on the surface of the evaporator 5. The condensed drain flows down due to gravity. The bottom plate 18 receives the drain. The drain flows toward the position of the drain hole 36 due to the height difference formed on the bottom plate 18, and is discharged from the drain hole 36 to below the bottom plate 18.

The compressor 2 includes a shell. The outer shape of the shell may be a cylindrical shape as shown. Although illustration is omitted, inside the shell of the compressor 2, a compressor that compresses the refrigerant and a motor that drives the compressor are housed. The compression device may be, for example, a reciprocating type, a scrolling type, a rotary type, or the like.

The suction muffler 25 is adjacent to the shell of the compressor 2. The suction muffler 25 is connected to the side surface of the shell of the compressor 2. The outer shape of the suction muffler 25 may be a cylindrical shape smaller than the shell of the compressor 2. A suction pipe 26 is connected to the suction muffler 25. The low-pressure refrigerant gas is sucked into the compressor 2 through the suction pipe 26 and the suction muffler 25. A discharge pipe 27 is connected to the compressor 2. The high-pressure refrigerant gas compressed by the compressor 2 is discharged to the discharge pipe 27.

A compressor leg 30 is fixed to the bottom of the shell of the compressor 2. The compressor 2 is mounted on the bottom plate 18 via the compressor legs 30. The compressor leg portion 30 has a strength capable of supporting the weight of the compressor 2 and the suction muffler 25. The compressor leg 30 is preferably made of metal. The compressor leg portion 30 corresponds to a base portion that supports the compressor 2. The compressor leg portion 30 in the embodiment is a plate-shaped member. The top surface of the compressor leg 30 is joined to the bottom surface of the shell of the compressor 2. The compressor leg 30 may be welded to the shell of the compressor 2. A plurality of (three in the present embodiment) holes 43 are formed in the compressor leg 30.

A plurality of (three in the present embodiment) bolts 28 for connecting the compressor 2 to the bottom plate 18 are installed on the bottom plate 18. The bolt 28 projects upward. The bolt 28 may be a weld bolt welded to the upper surface of the bottom plate 18. The heat pump hot water supply outdoor unit 10 includes a plurality of (three in the present embodiment) vibration damping members 29. The anti-vibration member 29 is arranged between the upper surface of the bottom plate 18 and the lower surface of the compressor leg portion 30. The anti-vibration member 29 is a member having elasticity such as rubber or spring. The external shape of the vibration isolator 29 may be a cylindrical shape or a cylindrical shape as illustrated. The anti-vibration member 29 has a hole through which the bolt 28 can be inserted. The bolt 28 is inserted through the hole of the vibration isolator 29 and the hole 43 of the compressor leg portion 30. The nut 31 is screwed onto the bolt 28. The compressor 2 is connected to the bottom plate 18 by sandwiching the anti-vibration member 29 and the compressor leg 30 between the bottom plate 18 and the nut 31. A soundproof material mounting portion 24 is arranged on the bottom plate 18 so as to surround the periphery of the compressor leg portion 30. The structure and function of the soundproof material mounting portion 24 will be described later in detail.

During operation of the compressor 2, vibration is generated due to torque fluctuations of the rotating body inside the compressor 2, imbalance of the rotating body, pulsation of refrigerant pressure, and the like. In particular, the compressor 2 of the heat pump hot water supply outdoor unit 10 requires a high compression pressure, so that the vibration of the compressor 2 is likely to be large. In the present embodiment, the weight of the compressor 2 and the suction muffler 25 is applied to the bottom plate 18 via the vibration isolator 29. When the compressor 2 is in operation, the vibration damping member 29 absorbs the vibration, so that the vibration of the compressor 2 can be reliably suppressed from being transmitted to the bottom plate 18.

Assuming that the vibration isolator 29 is not provided and the compressor 2 is directly fixed to the upper surface of the bottom plate 18, there are the following problems. The vibration of the compressor 2 is transmitted to the bottom plate 18, and the vibration of the bottom plate 18 is further transmitted to the front panel 19, the side panel 20, the top panel 21, the partition plate 16, the evaporator 5, and the like. As a result, vibrations of the bottom plate 18, the front panel 19, the side panels 20, the top panel 21, the partition plate 16, the evaporator 5, and the like may generate noise, particularly low-frequency noise. Low-frequency noise is sound that includes low frequencies that cannot be perceived by human hearing.

According to the present embodiment, since the vibration damping member 29 is provided, it is possible to reduce vibrations of the bottom plate 18, the front panel 19, the side panel 20, the top panel 21, the partition plate 16, the evaporator 5, and the like. Therefore, it is possible to reliably suppress the generation of noise, particularly low-frequency noise.

FIG. 5 is a perspective view showing the bottom plate 18, the compressor 2, the soundproof materials 32, 33, and the like included in the heat pump hot water supply outdoor unit 10 of the first embodiment. As shown in FIG. 5, the heat pump hot water supply outdoor unit 10 includes soundproof materials 32 and 33. The soundproof material 32 at least partially covers the side surface of the compressor 2. In the present embodiment, the soundproofing material 32 collectively covers the side surfaces of the compressor 2 and the suction muffler 25. The soundproofing material 32 is wound around the compressor 2 and the suction muffler 25 to have a tubular shape. The compressor 2 and the suction muffler 25 are located inside the cylindrical soundproof material 32. The soundproof material 33 covers the compressor 2 and the suction muffler 25 from above. The soundproofing material 33 is arranged so as to close the upper end opening of the soundproofing material 32 having a cylindrical shape. The soundproof material 33 is formed with a hole 44 through which the suction pipe 26 and the discharge pipe 27 pass. According to the present embodiment, by providing the soundproof materials 32 and 33, it is possible to reliably suppress the noise during operation of the compressor 2 from leaking to the outside of the heat pump hot water supply outdoor unit 10.

The soundproof materials 32 and 33 include a sound absorbing material. The sound absorbing material is made of a material having fine voids. The sound absorbing material may include at least one of felt, glass wool, and rock wool, for example. The soundproof materials 32 and 33 may further include a sound insulating material. The sound absorbing material may form an inner layer of the soundproof materials 32 and 33, and the sound insulating material may form an outer layer of the soundproof materials 32 and 33. The sound insulation material is made of a material having a higher density than the sound absorption material. The sound insulation material may be made of, for example, a rubber material or a resin material.

The drain hole 36 provided in the bottom plate 18 may be clogged with foreign matter such as dead leaves and mud, which may block the drain hole 36. When the drain hole 36 is closed, water flowing down from the evaporator 5 or the like is not discharged from the drain hole 36. During operation of the heat pump hot water supply outdoor unit 10, the evaporator 5 is always in a cold state. Therefore, the amount of condensed water generated on the surface of the evaporator 5 is larger than that of the outdoor unit of the air conditioner. When the drain hole 36 is closed, a large amount of drain may be accumulated on the bottom plate 18.

Depending on the installation environment such as a veranda or dog running, the heat pump hot water supply outdoor unit 10 may be installed in a state of being inclined to the compressor 2 side. In this case, a large amount of drain may be accumulated on the bottom plate 18, especially near the corner 183 closest to the compressor 2.

The sound absorbing material included in the soundproof materials 32 and 33 has water absorption because it has fine voids. Assuming that the lower end of the soundproof material 32 comes into contact with the drain pool on the bottom plate 18, the sound absorbing material of the soundproof material 32 absorbs water. A sound absorbing material that has absorbed water has a reduced sound absorbing performance. Further, the water absorbed by the sound absorbing material may come into contact with the compressor 2, which may corrode the compressor 2. In order to avoid these adverse effects, it is necessary to reliably prevent the lower end of the soundproof material 32 from coming into contact with the drain reservoir on the bottom plate 18.

As shown in FIGS. 4 and 5, the heat pump hot water supply outdoor unit 10 of the present embodiment includes the soundproof material mounting portion 24 that maintains the position of the lower end of the soundproof material 32. The soundproof material mounting portion 24 is arranged on the bottom plate 18. A part of the soundproof material mounting portion 24 has a shape along the corner 183 of the bottom plate 18. More specifically, the soundproof material mounting portion 24 is configured to extend along the first side 241 of the edge portion 182 of the bottom plate 18 along the side surface on the right side surface side and the side surface on the front surface side. And a second side 242. The angle formed by the first side 241 and the second side 242 is a right angle. The soundproof material mounting portion 24 is arranged so that the first side 241 and the second side 242 contact the edge portion 182 including the corner portion 183 of the bottom plate 18. With such an arrangement, the corner portion 183 of the bottom plate 18 is covered with the soundproof material mounting portion 24.

According to the present embodiment, the following effects can be obtained by providing the soundproof material mounting portion 24. Even if a drain pool is formed on the bottom plate 18 due to the blockage of the drain hole 36, it is possible to reliably prevent the drain pool from being generated in the corner portion 183 and the lower end of the soundproofing material 32 being immersed in the drain pool. It is possible to reliably prevent the sound absorbing material of the soundproof material 32 from absorbing water. It is possible to reliably prevent the occurrence of adverse effects such as deterioration of the sound absorbing performance of the sound absorbing material of the soundproof material 32 and corrosion of the compressor 2.

FIG. 6 is a cross-sectional view of the compressor 2, the bottom plate 18, the soundproof material mounting portion 24, the soundproof materials 32 and 33, etc. according to the first embodiment. In FIG. 6, the compressor 2 is shown not in cross section but in appearance.

As shown in FIG. 6, the upper surface 243 of the soundproof material mounting portion 24 is located above the height to the upper end of the edge portion 182 of the bottom plate 18. More specifically, assuming that the height from the bottom surface 181 of the bottom plate 18 to the upper end of the edge portion 182 is h1, and the height from the bottom surface 181 of the bottom plate 18 to the upper surface 243 of the soundproof material mounting portion 24 is h2, the soundproof material mounting is performed. The placing portion 24 and the bottom plate 18 are configured so that h2>h1. The upper surface 243 of the soundproof material mounting portion 24 contacts the lower end surface of the soundproof material 32. Even if the drain W is accumulated in the corner portion 183 of the bottom plate 18, the water surface does not become higher than the height h1 of the edge portion 182. According to the configuration of the present embodiment, the position of the lower end surface of the soundproof material 32 can be reliably maintained at a position above the water surface of the drain reservoir. Therefore, even if a drain pool is formed on the bottom plate 18 when the drain hole 36 is closed, it is possible to reliably prevent the lower end of the soundproof material 32 from touching the drain pool, and the sound absorbing material of the soundproof material 32 absorbs water. Can be reliably prevented.

FIG. 7 is a perspective view of the soundproof material mounting portion 24 before being attached to the compressor 2 according to the first embodiment as viewed from above. FIG. 8 is a perspective view of the soundproof material mounting portion 24 before being attached to the compressor 2 according to the first embodiment, as viewed from below. Further, FIG. 9 is a diagram in which the internal structure of heat pump hot water supply outdoor unit 10 to which soundproof material mounting portion 24 according to Embodiment 1 is attached is seen through from the upper surface side.

As shown in FIGS. 7 and 8, a concave drain flow path 244 is provided on the lower surface of the soundproof material mounting portion 24. The drain flow path 244 has an inflow port 245 and an outflow port 246 that are open to the side surface side of the soundproof material mounting portion 24. As shown in FIGS. 8 and 9, in the soundproof material mounting portion 24, the inflow port 245 is open to the evaporator side and the outflow port 246 is open to the drain hole 36 side. The inflow port 245 opens larger than the outflow port 246.

According to the present embodiment, the provision of the drain passage 244 provides the following effects. As shown in FIG. 9, the drain that has flowed down from the evaporator 5 flows from the inflow port 245, through the drain flow path 244, outflow from the outflow port 246, and is drained to the drain hole 36. As a result, it is possible to prevent the drain from accumulating in the corner portion 183 of the bottom plate 18. Since the inflow port 245 has a large opening toward the evaporator 5, the drain flowing down from the evaporator 5 can be easily taken in. Further, since the outflow port 246 has a small opening toward the drain hole 36 side, it is possible to effectively prevent the drain flowing out from the outflow port 246 from flowing to the other side. As described above, according to the present embodiment, the drainage efficiency of the drain can be enhanced and the soundproof material 32 can be reliably prevented from being immersed in the drain.

The soundproof material mounting portion 24 is arranged on the bottom plate 18 with the vibration damping member 29 being positioned. As shown in FIGS. 7 and 8, the soundproof material mounting portion 24 has an arc shape instead of a ring shape. More specifically, the soundproof material mounting portion 24 is arranged so as to surround the two sides of the triangle of the compressor leg portion 30 to which the compressor 2 is fixed in an arc shape. According to the present embodiment, the following effects can be obtained by providing the arc-shaped soundproof material mounting portion 24. Even when the compressor 2 is fixed to the bottom plate 18, the soundproof material mounting portion 24 can be installed on the bottom plate 18. Accordingly, the soundproof material mounting portion 24 can be attached without being restricted by the assembly order.

2 compressor, 3 heat exchanger, 4a first expansion valve, 4b second expansion valve, 5 evaporator, 6 internal heat exchanger, 7 blower, 8 first path, 9 second path, 10 heat pump hot water supply outdoor unit, 13 case, 14 machine room, 15 blower room, 16 partition plate, 17 electric component storage box, 18 bottom plate, 181 bottom surface, 182 edge part, 183 corner part, 19 front panel, 20 side panel, 21 top panel, 22 service panel , 23 grille, 24 soundproof material mounting part, 241 first side, 242 second side, 243 upper surface, 244 drain flow path, 245 inflow port, 246 outflow port, 25 suction muffler, 26 suction pipe, 27 discharge pipe, 28 Bolts, 29 anti-vibration members, 30 compressor legs, 31 nuts, 32, 33 soundproofing materials, 36 drain holes, 41 legs, 42 connection cover, 43 holes, 44 holes, 50 tank units, 52 hot water storage tanks, 53 Water pump, 54 flow path switching valve, 55 bypass flow path, 56, 57 external piping, 58 tank upper tube, 100 heat pump hot water supply system

Claims (5)

A bottom plate having a rectangular bottom surface,
A compressor that is on the bottom plate and compresses the refrigerant,
A soundproof material covering the side surface of the compressor,
On the bottom plate, a soundproof material mounting portion for keeping the position of the lower end of the soundproof material at a position higher than the bottom surface, and
The soundproofing material mounting portion is configured to cover a corner portion of the bottom plate closest to the compressor ,
The soundproof material mounting portion is configured to surround the periphery of the compressor in an arc shape,
The heat pump hot water supply outdoor unit is a heat pump hot water supply outdoor unit configured such that the soundproof material mounting portion can be arranged on the bottom plate in a state where the compressor is arranged on the bottom plate . The bottom plate is configured to include an edge portion extending upward from each side of the bottom surface,
The heat pump hot water supply outdoor unit according to claim 1, wherein the soundproof material mounting portion is configured to keep a position of a lower end of the soundproof material higher than a position of an upper end of the edge portion. The heat pump hot water supply outdoor unit according to claim 1 or 2, wherein the soundproof material mounting portion has a drain flow path for drain flow formed on a lower surface facing the bottom surface. An evaporator is disposed on the rear side of the heat pump hot water supply outdoor unit,
The bottom plate is formed with a drain hole for discharging drain,
The soundproof material mounting portion is configured such that an inlet of the drain passage opens toward the evaporator side and an outlet of the drain passage opens toward the drain hole side. The heat pump hot water supply outdoor unit according to claim 3. The heat pump hot water supply outdoor unit according to claim 4, wherein the soundproof material mounting portion is configured such that an opening of the inflow port is larger than an opening of the outflow port.

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