WO2017212613A1

WO2017212613A1 - Heat pump hot water supply outdoor unit

Info

Publication number: WO2017212613A1
Application number: PCT/JP2016/067244
Authority: WO
Inventors: 敏也山内; 要服部
Original assignee: 三菱電機株式会社
Priority date: 2016-06-09
Filing date: 2016-06-09
Publication date: 2017-12-14
Also published as: JPWO2017212613A1; JP6631706B2

Abstract

This heat pump hot water supply outdoor unit is provided with: a bottom plate (18); a compressor (2) which is disposed on the bottom plate (18), and which compresses a refrigerant; a foot part (30) which is fixed to the bottom of the compressor (2); vibration absorption members (29) which are provided between the bottom plate (18) and the foot part (30); a sound insulation material (32) which covers the side surface of the compressor (2); and a support (34) for maintaining the position of the lower end of the sound insulation material (32). The support (34) is supported on the foot part (30). The support (34) may be provided with a first portion (35) which is in contact with the lower end surface of the sound insulation material (32); and a second portion (36) which is in contact with the outer circumferential surface of the sound insulation material (32). The support (34) may be integrated with the foot part (30).

Description

Heat pump water heater outdoor unit

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

・ Energy efficient heat pump hot water supply systems that use atmospheric heat are widely used. The heat pump water heater outdoor unit provided in the heat pump hot water supply system heats water with an evaporator that absorbs atmospheric heat into the refrigerant, a propeller fan that blows air to the evaporator, a compressor that compresses the refrigerant, and a compressed high-temperature and high-pressure refrigerant. A water refrigerant heat exchanger is installed. In order to reduce noise generated during operation, the periphery of the compressor is covered with a soundproofing material. A compressor is installed on the baseplate used as the base of a heat pump hot water supply outdoor unit. Water condensed on the surface of the evaporator may flow down to the bottom plate and accumulate. The soundproofing material includes a water-absorbing substance such as felt. If the soundproofing material absorbs water, the moisture can corrode the compressor. When the soundproofing material absorbs water, the soundproofing property of the soundproofing material may be lowered. It is desirable to prevent the soundproofing material from touching the water accumulated on the bottom plate so that the soundproofing material does not absorb water.

The outdoor unit disclosed in Patent Document 1 below is configured as follows. The soundproof material (3A) covering the side surface of the compressor (22) includes a sound absorbing material (41) having water absorption. The bottom plate (17a) on which the compressor (22) is installed is located around the soundproofing material placement part (61) on which the soundproofing material (3A) is placed, and the soundproofing material placement part (61). A material placement portion (61) and a peripheral portion (62) formed integrally. The soundproof material placement portion (61) is located higher than the surrounding portion (62). With such a configuration, even if the condensed water flows down and accumulates on the peripheral portion (62) of the bottom plate (17a), the water is placed on the soundproof material placement portion (61). ) Is suppressed. Thereby, the penetration of water into the sound absorbing material (41) is suppressed.

Japanese Unexamined Patent Publication No. 2013-53827

The outdoor unit of Patent Document 1 has the following problems. Since the soundproof material placement portion (61) and the peripheral portion (62) are formed on the bottom plate (17a), the shape of the bottom plate (17a) becomes complicated. The complicated shape leads to an increase in the manufacturing cost of the bottom plate (17a). In addition, there is a problem that the vibration of the compressor (22) is easily transmitted to the bottom plate (17a) through the soundproof material (3A). Since the compressor used for the heat pump hot water supply outdoor unit has a high compression pressure, the vibration tends to be large. When the vibration of the compressor (22) is transmitted to the bottom plate (17a), each part of the housing of the heat pump hot water supply outdoor unit including the bottom plate (17a) vibrates, which is likely to cause noise, particularly low frequency noise.

The present invention has been made to solve the above-described problems, and prevents the soundproofing material covering the side surface of the compressor from absorbing water accumulated on the bottom plate without complicating the shape of the bottom plate. It aims at providing the heat pump hot-water supply outdoor unit which can be used.

The heat pump hot water supply outdoor unit of the present invention includes a bottom plate, a compressor that is on the bottom plate, compresses refrigerant, a foot fixed to the bottom of the compressor, and a vibration isolating member between the bottom plate and the foot. And a soundproofing material that covers the side surface of the compressor, and a support that maintains the position of the lower end of the soundproofing material, and the support is supported by the foot.

According to the heat pump hot water supply outdoor unit of the present invention, it is possible to prevent the soundproofing material covering the side surface of the compressor from absorbing water accumulated on the bottom plate without complicating the shape of the bottom plate. Since the shape of the bottom plate does not become complicated, an increase in the manufacturing cost of the bottom plate can be suppressed. Furthermore, vibration transmission from the compressor to the bottom plate can be reliably suppressed.

1 is a piping system diagram of a heat pump hot water supply system including the heat pump hot water supply outdoor unit of Embodiment 1. FIG. It is a perspective view which shows the external appearance of the heat pump hot-water supply outdoor unit of Embodiment 1. FIG. FIG. 3 is an exploded perspective view of the heat pump hot water supply outdoor unit according to the first embodiment. It is a disassembled perspective view which shows the baseplate with which the heat pump hot-water supply outdoor unit of Embodiment 1 is equipped, a compressor, etc. FIG. It is a perspective view which shows the baseplate with which the heat pump hot-water supply outdoor unit of Embodiment 1 is equipped, a compressor, a soundproof material, etc. It is sectional drawing, such as a compressor in Embodiment 1, a baseplate, a foot part, and a soundproof material. FIG. 3 is a perspective view showing a foot portion and a support before being attached to the compressor in the first embodiment. It is a disassembled perspective view of the foot | leg part with which the heat pump hot-water supply outdoor unit of Embodiment 2 is provided, and a support component.

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

Embodiment 1 FIG.
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, the heat pump hot water supply system 90 includes a heat pump hot water supply outdoor unit 1 and a tank unit 91. The heat pump hot water supply outdoor unit 1 is installed outdoors. The tank unit 91 may be installed outdoors or indoors.

The heat pump hot water supply outdoor unit 1 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 1 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, for example, carbon dioxide. The heat exchanger 3 exchanges heat between the high-temperature and high-pressure refrigerant discharged from the compressor 2 and water or other 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 depressurize the high-pressure refrigerant to make it a low-pressure refrigerant. The decompressed 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 evaporates by absorbing atmospheric heat. When the blower 7 blows air to the evaporator 5, heat exchange in the evaporator 5 can be promoted. The internal heat exchanger 6 includes a high pressure channel and a low pressure channel. The internal heat exchanger 6 exchanges heat between the high-pressure refrigerant that flows through the high-pressure channel and the low-pressure refrigerant that flows through the low-pressure channel. The low-pressure refrigerant gas evaporated by 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 in the present embodiment, the refrigerant that has passed through the heat exchanger 3 passes through the high-pressure channel of the internal heat exchanger 6 and reaches the evaporator 5, and the refrigerant that has passed through the heat exchanger 3. Includes a second path 9 that reaches the evaporator 5 without going through the internal heat exchanger 6. The first expansion valve 4 a is installed in the first path 8 downstream of the high pressure channel of the internal heat exchanger 6. The second expansion valve 4 b is installed in the second path 9. By adjusting the opening degree 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 heat exchanger 3 to the internal The ratio with the flow rate of the refrigerant reaching the evaporator 5 without passing through the heat exchanger 6 can be changed.

The tank unit 91 includes a hot water storage tank 92, a water pump 93, a flow path switching valve 94, and a bypass flow path 95. The heat pump hot water supply outdoor unit 1 and the tank unit 91 are connected via

external pipes

96 and 97.

In the hot water storage tank 92, water before heating and hot water after heating are stored. In the hot water storage tank 92, due to the difference in specific gravity of water depending on the temperature, a temperature stratification is formed in which the upper side is hot and the lower side is low. A hot water supply pipe (not shown) for supplying hot water to a terminal such as a hot water tap, a shower, or a bathtub is connected to the upper portion of the hot water storage tank 92. A water supply pipe (not shown) for supplying water from a water source such as a water supply is connected to the lower part of the hot water storage tank 92. When hot water is supplied from the hot water storage tank 92, the hot water in the upper part of the hot water storage tank 92 is sent to the hot water supply pipe by the water pressure acting in the hot water storage tank 92 from the water supply pipe. The same amount of water as the hot water flowing out to the hot water supply pipe flows into the hot water storage tank 92 from the water supply pipe, whereby the hot water storage tank 92 is maintained in a full state.

The lower part of the hot water storage tank 92 is connected to the inlet of the water pump 93 through a conduit. The outlet of the water pump 93 is connected to the flow path switching valve 94. The flow path switching valve 94 is connected to the water inlet of the heat exchanger 3 of the heat pump hot water supply outdoor unit 1 via the external pipe 96.

The heat pump hot water supply system 90 can perform a heat storage operation in which hot water heated by the heat pump hot water supply outdoor unit 1 is accumulated in the hot water storage tank 92. At the time of heat storage operation, it is as follows. The compressor 2, the blower 7, and the water pump 93 are operated. Water flowing out from the lower part of the hot water storage tank 92 flows into the heat exchanger 3 of the heat pump hot water supply outdoor unit 1 through the water pump 93, the flow path switching valve 94, and the external pipe 96. 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 about 65 ° C. to 90 ° C., for example. The hot water flowing out from the heat exchanger 3 returns to the tank unit 91 through the external pipe 97 and flows into the upper part of the hot water storage tank 92 through the tank upper pipe 98.

The flow path switching valve 94 can switch the flow path so that water discharged from the water pump 93 flows into the tank upper pipe 98 through the bypass flow path 95 instead of the heat pump hot water supply outdoor unit 1. is there.

The heat pump hot water supply outdoor unit of the present invention is not limited to a part of the hot water supply system such as the heat pump hot water supply system 90, and may be used for heating a 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 is applied to, for example, a floor heating panel installed under the floor, a radiator or panel heater installed on the indoor wall surface, or a heating appliance such as a fan convector. You may supply.

FIG. 2 is a perspective view showing an appearance of the heat pump hot water supply outdoor unit 1 of the first embodiment. FIG. 3 is an exploded perspective view of the heat pump hot water supply outdoor unit 1 according to the first embodiment. As shown in FIG. 2, the heat pump hot water supply outdoor unit 1 includes a plurality of legs 41. The leg portion 41 is fixed to the ground or floor surface.

As shown in FIG. 3, the heat pump hot water supply outdoor unit 1 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 constitute an outer shell, that is, a casing of the heat pump hot water supply outdoor unit 1. 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 1. Components such as the compressor 2 are mounted on the bottom plate 18. A leg portion 41 is fixed to the lower surface of the bottom plate 18.

The front panel 19 covers the front and left sides of the heat pump hot water outdoor unit 1. 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 1. The top panel 21 covers the upper surface of the heat pump hot water supply outdoor unit 1.

The evaporator 5 is disposed so as to cover the rear surface and the left side surface of the heat pump hot water supply outdoor unit 1. A blower 7 is disposed between the evaporator 5 and the front panel 19. The 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 1 is partitioned into a blower chamber 15 having a blower 7 and a machine chamber 14. A partition plate 16 separates the blower chamber 15 and the machine chamber 14. In the machine room 14, the compressor 2, a refrigerant pipe, and the like are arranged. In FIG. 3, illustration of

soundproof materials

32 and 33 to be described later is omitted. A case 13 is disposed under the blower 7. The heat exchanger 3 is housed in the case 13 in a state covered with a heat insulating material.

The front panel 19 has an opening at a position facing the blower 7. A grill 23 covering the opening is attached to the front panel 19. When the blower 7 is operated, the outside air, that is, the air passes through the evaporator 5 and 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 1.

The heat pump hot water supply outdoor unit 1 includes an electrical component storage box 17. The electrical component storage box 17 is disposed in a space that occupies a part of the upper portion of the blower chamber 15 and the upper portion of the machine chamber 14. In the electrical component storage box 17, for example, electrical components such as an inverter power source that drives and controls the motor of the compressor 2 and the motor of the blower 7 are stored. There is a terminal block near the electrical component storage box 17. Terminal blocks are 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. A connection cover 42 is detachably attached to the side panel 20 below the service panel 22. The connection portion cover 42 protects a connection portion (not shown) to which the

external pipes

96 and 97 are connected.

FIG. 4 is an exploded perspective view showing the bottom plate 18 and the compressor 2 provided in the heat pump hot water supply outdoor unit 1 of the first embodiment. As shown in FIG. 4, the bottom plate 18 has a shape in which a plurality of irregularities, steps, slopes, and the like having a height difference of about 1 cm are formed. The bottom plate 18 may be formed by press working such as drawing. The bottom plate 18 has water shielding properties.

The drain plate 37 is formed in the bottom plate 18. The drainage port 37 is desirably located at the lowest position in the bottom plate 18. During operation of the heat pump hot water supply outdoor unit 1, the evaporator 5 is at a low temperature, so that moisture contained in the air passing through the evaporator 5 may condense on the surface of the evaporator 5. The condensed water flows down by gravity. The bottom plate 18 receives the water. The water flows toward the position of the drainage port 37 due to the height difference formed in the bottom plate 18, and is discharged from the drainage port 37 to below the bottom plate 18.

In the place where the heat pump hot water supply outdoor unit 1 is installed, a hopper for receiving water discharged from the drain 37 may be provided. In the present embodiment, the following effects can be obtained. Since the bottom plate 18 collects condensed water or the like generated on the surface of the evaporator 5 and discharges it from the drain port 37 to the outside of the heat pump hot water supply outdoor unit 1, it is possible to prevent water from being discharged from places other than the drain port 37. It is possible to reliably prevent the user from misunderstanding that the heat pump hot water supply outdoor unit 1 is leaking water.

The compressor 2 includes a shell. The outer shape of the shell may be a cylindrical shape as shown. Although not shown, a compressor for compressing the refrigerant and a motor for driving the compressor are accommodated in the shell of the compressor 2. The compression device may be any of a reciprocating type, a scroll type, a rotary type, and the like, for example.

The suction muffler 24 is adjacent to the shell of the compressor 2. The suction muffler 24 is connected to the side surface of the shell of the compressor 2. The outer shape of the suction muffler 24 may be a cylindrical shape smaller than the shell of the compressor 2. A suction pipe 25 is connected to the suction muffler 24. The low-pressure refrigerant gas is sucked into the compressor 2 through the suction pipe 25 and the suction muffler 24. A discharge pipe 26 is connected to the compressor 2. The high-pressure refrigerant gas compressed by the compressor 2 is discharged to the discharge pipe 26. A terminal cover 27 is attached to the upper part of the shell of the compressor 2.

A foot 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 foot 30. The foot 30 has a strength capable of supporting the weight of the compressor 2 and the suction muffler 24. The foot 30 is preferably made of metal. The foot portion 30 corresponds to a base portion that supports the compressor 2. The foot 30 in the embodiment is a plate-like member. The upper surface of the foot 30 is joined to the bottom surface of the shell of the compressor 2. The foot 30 may be welded to the shell of the compressor 2. A plurality of (three in this embodiment) holes 43 are formed in the foot 30.

The bottom plate 18 is provided with a plurality (three in this embodiment) of bolts 28 for connecting the compressor 2 to the bottom plate 18. The bolt 28 protrudes 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 1 includes a plurality (three in the present embodiment) of vibration isolation members 29. The vibration isolating member 29 is disposed between the upper surface of the bottom plate 18 and the lower surface of the foot portion 30. The vibration isolation member 29 is a member having elasticity such as rubber or a spring. The external shape of the vibration isolation member 29 may be a cylindrical shape or a columnar shape as shown in the figure. The vibration isolating member 29 has a hole through which the bolt 28 can be inserted. The bolt 28 is inserted through the hole of the vibration isolation member 29 and the hole 43 of the foot 30. The nut 31 is screwed into the bolt 28. The compressor 2 is connected to the bottom plate 18 by the vibration isolating member 29 and the foot portion 30 being sandwiched between the bottom plate 18 and the nut 31.

During operation of the compressor 2, vibration is generated due to torque fluctuations of the rotating body inside the compressor 2, unbalanced rotating body, pulsation of refrigerant pressure, and the like. In particular, the compressor 2 of the heat pump hot water supply outdoor unit 1 requires a high compression pressure, and therefore the vibration of the compressor 2 tends to increase. In the present embodiment, the weights of the compressor 2 and the suction muffler 24 are applied to the bottom plate 18 through the vibration isolation member 29. When the compressor 2 is in operation, the vibration isolation 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 isolating member 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 panel 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 detected by human hearing.

In the present embodiment, the vibration 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 can be reduced by providing the vibration isolation member 29. Therefore, generation of noise, particularly low frequency noise, can be reliably suppressed.

FIG. 5 is a perspective view showing the bottom plate 18, the compressor 2, and the

soundproof materials

32 and 33 provided in the heat pump hot water supply outdoor unit 1 of the first embodiment. As shown in FIG. 5, the heat pump hot water supply outdoor unit 1 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 soundproof material 32 covers the side surfaces of the compressor 2 and the suction muffler 24 together. The soundproof material 32 is formed in a cylindrical shape by being wound around the compressor 2 and the suction muffler 24. The compressor 2 and the suction muffler 24 are positioned inside the tubular soundproof material 32. The soundproof material 33 covers the compressor 2 and the suction muffler 24 from above. The soundproof material 33 is arranged so as to close the upper end opening of the cylindrical soundproof material 32. The soundproof material 33 is formed with a hole 44 through which the suction pipe 25 and the discharge pipe 26 are passed. If it is this Embodiment, it can suppress reliably that the noise at the time of the driving | operation of the compressor 2 leaks outside the heat pump hot water supply outdoor unit 1 by providing the

soundproof materials

32 and 33.

The

soundproof materials

32 and 33 are provided with sound absorbing materials. 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, rock wool, for example. The sound

insulating materials

32 and 33 may further include a sound insulating material. The sound absorbing material may constitute the inner layer of the

soundproofing materials

32 and 33, and the sound insulating material may constitute the outer layer of the

soundproofing materials

32 and 33. The sound insulating material is made of a material having a higher density than the sound absorbing material. The sound insulating material may be made of, for example, a rubber material or a resin material.

The drain outlet 37 provided in the bottom plate 18 may be clogged with foreign matter such as dead leaves and mud, for example. When the drain port 37 is blocked, the water flowing down from the evaporator 5 or the like is not discharged from the drain port 37. During the operation of the heat pump hot water supply outdoor unit 1, the evaporator 5 is always in a cold state. For this reason, 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. If the drainage port 37 is blocked, a large amount of water may accumulate on the bottom plate 18.

The sound absorbing material included in the

soundproofing materials

32 and 33 has a fine gap and therefore has water absorption. Assuming that the lower end of the soundproof material 32 has touched the water 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 reduced sound absorbing performance. Moreover, the compressor 2 may be corroded by the water | moisture content absorbed by the sound-absorbing material contacting the compressor 2. FIG. 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 water pool on the bottom plate 18.

As shown in FIGS. 4 and 5, the heat pump hot water supply outdoor unit 1 of the present embodiment includes a support 34 that keeps the position of the lower end of the soundproof material 32. The support 34 is supported by the foot 30. The foot 30 is on a vibration isolating member 29 on the bottom plate 18. The position of the foot 30 is above the water surface of the water pool that may be generated on the bottom plate 18 when the drainage port 37 is closed. In the present embodiment, the following effects can be obtained by providing the support 34. Even when a water pool occurs on the bottom plate 18 due to the closure of the drain port 37, the lower end of the soundproof material 32 can be reliably prevented from touching the water pool. It is possible to reliably prevent water from being absorbed by the sound absorbing material of the sound insulating material 32. It is possible to reliably prevent the occurrence of harmful effects such as a decrease in the sound absorbing performance of the sound absorbing material of the sound insulating material 32 or the corrosion of the compressor 2.

FIG. 6 is a cross-sectional view of the compressor 2, the bottom plate 18, the foot 30, the

soundproof materials

32 and 33, etc. in the first embodiment. In FIG. 6, the compressor 2 is not a cross section but an external appearance. FIG. 7 is a perspective view showing the foot 30 and the support 34 before being attached to the compressor 2 in the first embodiment.

As shown in FIG. 7, the schematic shape of the foot 30 is a triangular plate. A hole 43 is formed in each of the three corners of the triangle. In the present embodiment, the support 34 is integral with the foot portion 30. That is, the foot 30 and the support 34 are one part. For example, the support 34 can be easily formed integrally with the foot 30 by pressing. According to the present embodiment, it is possible to prevent an increase in the number of parts, and it is possible to suppress parts and assembly costs.

In the illustrated configuration, the support 34 protrudes from each side of the triangular foot 30. That is, the support 34 is formed in three places. These supports 34 are in contact with the lower end of the soundproof material 32 at a plurality of locations (three locations in the present embodiment) where the circumferential positions of the soundproof material 32 having a cylindrical shape are different. The support 34 includes a first portion 35 and a second portion 36. The first portion 35 protrudes horizontally from the outer edge of the foot 30 to the outside. The second part 36 projects vertically upward from the tip of the first part 35.

As shown in FIG. 6, the support 34 is located above the water surface of the water pool W that may be generated on the bottom plate 18 when the drainage port 37 is closed. The first portion 35 of the support 34 is in contact with the lower end surface of the soundproof material 32. Thereby, 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 water reservoir W. For this reason, even if the water pool W is generated on the bottom plate 18 when the drain port 37 is closed, the lower end of the soundproof material 32 can be reliably prevented from touching the water pool W, and the sound absorbing material of the soundproof material 32 absorbs water. Can be surely prevented.

In the present embodiment, the soundproof material 32 is in contact with or close to the side surface of the compressor 2. Thereby, the following effects are acquired. The soundproof material 32 has not only soundproofing properties but also heat insulation properties. The surface of the shell of the compressor 2 becomes high temperature. By reducing the gap between the side surface of the compressor 2 and the soundproof material 32, it is possible to more reliably suppress heat dissipation from the surface of the shell of the compressor 2. For this reason, the loss of thermal energy can be reduced. By reducing the gap between the side surface of the compressor 2 and the soundproof material 32, the amount of the soundproof material 32 can be minimized.

The second part 36 of the support 34 is in contact with the lower outer peripheral surface of the soundproof material 32. If it is this Embodiment, the following effects are acquired by providing the 2nd site | part 36. FIG. It is possible to reliably prevent the soundproof material 32 from protruding from the first portion 35 and coming off the support 34. Therefore, the position of the lower end surface of the soundproof material 32 can be more reliably maintained at a position above the water surface of the water reservoir W. Further, the soundproof material 32 can be more reliably held at a position in contact with or close to the side surface of the compressor 2.

In the present embodiment, since it is not necessary to form a shape for supporting the lower end of the soundproof material 32 in the bottom plate 18, it is possible to avoid the shape of the bottom plate 18 from becoming complicated. For this reason, an increase in manufacturing cost of the bottom plate 18 can be avoided.

(Comparative example)
As a comparative example, a configuration in which the lower end of the soundproof material 32 is in contact with the convex portion formed on the bottom plate 18 is assumed. This comparative example has the following problems. During operation of the compressor 2, the vibration isolating member 29 repeats minute expansion and contraction, so that the compressor 2 repeats minute vertical movement with respect to the bottom plate 18. Accompanying such minute vertical movement of the compressor 2, the soundproof material 32 repeats minute vertical movement. When the lower end of the soundproof material 32 is in contact with the bottom plate 18, a minute vertical movement of the soundproof material 32 vibrates the bottom plate 18. The vibration of the bottom plate 18 is 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 panel 20, the top panel 21, the partition plate 16, the evaporator 5 and the like may generate noise, particularly low frequency noise.

On the other hand, in the present embodiment, the support 34 supported by the foot 30 on the vibration-proof member 29 supports the lower end of the sound-proof material 32, so that the minute vertical movement of the sound-proof material 32 is the bottom plate. 18 is not transmitted. Therefore, unlike the comparative example, 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 do not vibrate, and the generation of noise, particularly low frequency noise, is ensured. Can be prevented.

The bottom plate 18 includes a side wall 45 on the outer periphery. As shown in FIG. 6, the lower end of the soundproof material 32 is at a position higher than the position of the upper end of the side wall 45. The position of the water surface of the water pool W at the highest water level that may occur on the bottom plate 18 when the drainage port 37 is closed is equal to the position of the upper end of the side wall 45. In the present embodiment, the position of the lower end of the soundproof material 32 is higher than the position of the water surface of the highest water pool W that may be generated on the bottom plate 18 when the drainage port 37 is closed. According to such a configuration, even when a water pool W is generated on the bottom plate 18 when the drain port 37 is closed, the lower end of the soundproof material 32 can be more reliably prevented from touching the water pool W, and the soundproof material 32 can be prevented. It is possible to more reliably prevent the sound absorbing material from absorbing water.

Embodiment 2. FIG.
Next, the second embodiment will be described with reference to FIG. 8. The description will focus on the differences from the first embodiment described above, and the description of the same or corresponding parts will be simplified or omitted. FIG. 8 is an exploded perspective view of the foot 30 and the support component 38 included in the heat pump hot water supply outdoor unit 1 according to the second embodiment.

In the above-described first embodiment, the support 34 and the foot 30 are integrated, that is, a single component. The second embodiment is different from the first embodiment in that the support 34 and the foot 30 are separate bodies, that is, separate parts. As shown in FIG. 8, the heat pump hot water supply outdoor unit 1 according to the second embodiment includes a support component 38. The support component 38 is fixed to the lower surface of the foot portion 30. The support 34 is formed as a part of the support component 38. The support component 38 may be made of metal, or may be a resin or plastic molded product. A plurality of claws 39 are formed on the upper surface of the support component 38. The support part 38 is fixed to the foot 30 by engaging the claw 39 with the outer edge of the foot 30. Needless to say, instead of the claw 39, the support component 38 may be fixed to the foot 30 by screwing, for example. If it is this Embodiment 2, the effect similar to Embodiment 1 will be acquired.

1 Heat pump hot water supply outdoor unit, 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, 13 Case, 14 Machine room, 15 Blower room, 16 Partition plate, 17 Electrical component storage box, 18 Bottom plate, 19 Front panel, 20 Side panel, 21 Top panel, 22 Service panel, 23 Grill, 24 Suction muffler, 25 Suction pipe , 26 discharge pipe, 27 terminal cover, 28 bolt, 29 vibration isolation member, 30 foot, 31 nut, 32, 33 soundproof material, 34 support, 35 first part, 36 second part, 37 drainage port, 38 support parts , 39 nails, 41 Leg part, 42 connection part cover, 43, 44 holes, 90 heat pump hot water supply system, 91 tank unit, 92 hot water storage tank, 93 water pump, 94 flow path switching valve, 95 bypass flow path, 96, 97 external piping, 98 tank upper part tube

Claims

The bottom plate,
A compressor on the bottom plate for compressing the refrigerant;
A foot fixed to the bottom of the compressor;
A vibration isolating member between the bottom plate and the foot,
A soundproof material covering a side surface of the compressor;
A support for maintaining the position of the lower end of the soundproof material;
With
The support is a heat pump hot water supply outdoor unit supported by the foot.
The heat pump hot water supply outdoor unit according to claim 1, wherein the support includes a first portion that contacts a lower end surface of the soundproof material and a second portion that contacts an outer peripheral surface of the soundproof material.
The heat pump hot water supply outdoor unit according to claim 1 or 2, wherein the support is integral with the foot.
The heat pump hot water supply outdoor unit according to claim 1 or 2, wherein the support is separate from the foot, and the support is fixed to the foot.
The bottom plate includes a side wall on the outer periphery,
The heat pump hot water supply outdoor unit according to any one of claims 1 to 4, wherein a lower end of the soundproof material is located at a position higher than an upper end of the side wall.