JP2008151400A - Hot-water supply outdoor unit and hot-water supply air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot-water supply outdoor unit and a hot-water supply air conditioner capable of suppressing vibration of a sheet metal container, and capable of even preventing noise from a foam thermal insulation container while suppressing deformation of the foam thermal insulation container or the sheet metal container housing the foam thermal insulation container without raising costs. <P>SOLUTION: The hot-water supply outdoor unit has a heat exchanger for hot water carrying out heat exchange between a coolant of a refrigerating cycle circuit and water of a hot water circuit. It is characterized by that it is provided with the foam thermal insulation container 6 housing the heat exchanger for hot water, the metal sheet container 7 housing the foam thermal insulation container 6, and a protruding part 6a provided on an outer wall surface of the foam thermal insulation container 6, and contacting an inner wall surface of the sheet metal container 7. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a heat pump type hot water supply outdoor unit and a hot water supply air conditioner using the hot water supply outdoor unit, and more particularly to improvement of the structure.

The water heat exchanger housed in a foam insulation container mounted on a substrate that supports the bottom surface of the water heater is a fastening screw that includes a protective cover that covers the substrate and a front plate that forms the exterior of the water heater. As a result, the amplitude of the hydrothermal exchanger itself during operation was large and vibration noise was generated, resulting in a decrease in soundproof performance. Since there is a demand for a heat pump water heater with excellent soundproof performance using a fixed structure that eliminates the problem, a bottom surface of the foam insulation container that houses the water heat exchanger is provided with a convex shape along the diaphragm shape of the substrate, A protective cover that covers the outer periphery of the foam insulation container is provided with a bent surface that contacts the sound insulation plate, and an L-shaped cut-and-raised shape that sandwiches the bent surface from the adjacent sound insulation plate is provided. Further, a heat pump device has been proposed in which a bent surface is formed by extending a bent surface excluding a connecting and fixing portion of the sound insulating plate of the bent surface with an L-shaped cut and raised shape (see, for example, Patent Document 1).
JP 2005-147619 A

  However, the heat pump device described in Patent Document 1 suppresses the vibration of the protective cover and insulates the noise from the foam heat insulating container, so that the outer wall surface of the foam heat insulating container and the inner wall surface of the protective cover are wide. If it is necessary to make contact without gaps, and the fitting between the two is tight, the contact force between the foam insulation container and the protective cover becomes excessive, and the foam insulation container or protection cover is greatly deformed, causing damage to the foam insulation container. There were problems such as.

  Further, if the fitting is loose, there is a problem that the vibration of the protective cover cannot be suppressed and the noise from the foam heat insulating container cannot be insulated.

  Further, in order to achieve an appropriate fitting, it is necessary to increase the molding accuracy of the foam insulation container and the molding accuracy of the protective cover, and there are problems such as a significant increase in cost.

  The present invention has been made to solve the above-described problems, and suppresses vibration of the sheet metal container while suppressing deformation of the foam heat insulating container or the sheet metal container storing the foam heat insulating container without increasing the cost. And it aims at providing the hot-water supply outdoor unit and hot-water supply air conditioner which can insulate the noise which comes out of a foam heat insulation container.

  A hot water supply outdoor unit according to the present invention is a hot water supply outdoor unit having a hot water heat exchanger that performs heat exchange between the refrigerant in the refrigeration cycle circuit and the water in the hot water circuit, and a foam insulation container that houses the hot water heat exchanger; A sheet metal container for storing the foam insulation container, and a convex portion provided on the outer wall surface of the foam insulation container and in contact with the inner wall surface of the sheet metal container.

  Since the hot water supply outdoor unit of the present invention is configured to provide the convex portions on the upper and outer wall surfaces of the foam heat insulating container and to contact the convex portions with the inner wall surface of the sheet metal container, the vibration of the sheet metal container is suppressed, In order to prevent the leakage of noise, the contact between the foam insulation container and the sheet metal container is not affected by the tight contact between the outer wall surface of the foam insulation container and the inner wall surface of the sheet metal container. Since it does not become excessive and deformation of the foam insulation container and sheet metal container is suppressed, there is no need to increase the molding accuracy of the foam insulation container and the sheet metal container in order to achieve an appropriate fit. It has the effect that a silent hot water supply outdoor unit can be obtained.

Embodiment 1 FIG.
FIGS. 1 to 6 are diagrams showing the first embodiment. FIG. 1 is an exploded perspective view of the hot water supply outdoor unit 100, FIG. 2 is a front view of the hot water supply outdoor unit 100, and FIG. 4 is a perspective view showing the heat exchanger 10 for hot water inside the hot water supply outdoor unit 100, FIG. 5 is a perspective view of the foam insulation container 6, and FIG. 6 is a diagram showing the foam insulation container 6 accommodated in the sheet metal container 7. It is a see-through | perspective front view which shows the state which exists.

  As shown in FIGS. 1 and 2, a hot water supply outdoor unit 100 includes a casing 1 that is an outer shell, an outdoor unit base 2 that is a bottom plate, a front panel 3 that is a front plate and a side plate, a side surface that is a side plate and a back plate. It is formed by the panel 4 and the top panel 5 which becomes an upper surface plate. The housing 1 has a substantially rectangular parallelepiped shape.

  Inside the housing 1, there are a refrigeration cycle heat exchanger 9, a blower fan (not shown), a blower fan motor 14, a hot water heat exchanger 10 (see FIG. 4), a compressor 15, a water supply pump 18, and the like. Is housed. The hot water heat exchanger is housed inside a sheet metal container 7 composed of the housing wall 11 and the lid 12. This will be described later.

  An air outlet 3 a is formed in the front plate of the front panel 3. An air inlet 3 b is formed in the side plate of the front panel 3 and the back side of the housing 1.

  Further, a leg 2 a for installing the hot water supply outdoor unit 100 is formed in the lower part of the outdoor unit base 2.

As shown in FIG. 3, the compressor 15 has a discharge pipe 16 at the top, and is connected to the hot water heat exchanger 10 by a connection pipe (not shown). Further, a vibration isolating member 17 is attached to the leg portion 15 a at the lower part of the compressor 15, and the vibration isolating member 17 is installed on the lid 12 of the sheet metal container 7. For example, a CO ₂ refrigerant is used as the refrigerant of the refrigeration cycle including the compressor 15.

  As shown in FIG. 4, a hot water heat exchanger 10 that performs heat exchange between the refrigerant and water is housed inside the housing wall 11 of the sheet metal container 7. Although description about the heat exchanger 10 for warm water is abbreviate | omitted, it joins refrigerant | coolant piping and water piping, and shape | molded so that heat exchange was possible.

  The hot water heat exchanger 10 is housed in a foam insulation container 6 (see FIG. 5) made of, for example, polystyrene foam, and the foam insulation container 6 is housed in a sheet metal container 7 composed of a housing wall 11 and a lid 12. (See FIG. 6).

  As shown in FIG. 5, a plurality of integrally molded (four in FIG. 5) rectangular parallelepiped convex portions 6 a are arranged on the upper and outer wall surfaces of the foam insulation container 6 in the longitudinal direction of the foam insulation container 6. . When the foam insulation container 6 is housed in the sheet metal container 7, the convex portions 6a on the upper and outer wall surfaces of the foam insulation container 6 are configured to reliably contact the inner wall surface of the lid 12. However, the convex portion 6 a may be on the outer wall surface of the foam heat insulating container 6.

Next, the operation will be described.
The refrigeration cycle circuit and the hot water circuit are the same as those of a known heat pump type water heater.
The refrigeration cycle circuit is formed by connecting a compressor 15, a hot water heat exchanger 10, an expansion valve (not shown), a refrigeration cycle heat exchanger 9 and the like through refrigerant piping.
The hot water circuit is formed by connecting a water supply pump 18 (see FIG. 1), a hot water heat exchanger 10, a hot water tank (not shown), and the like.

  In the hot water heat exchanger 10, the high-temperature and high-pressure refrigerant gas in the refrigeration cycle circuit and the water in the hot water circuit exchange heat to generate hot water.

  During operation, the compressor 15 of the refrigeration cycle circuit generates vibration due to torque fluctuations of the rotating body, imbalance of the rotating body, and refrigerant pressure pulsations generated inside. The vibration of the compressor 15 is transmitted from the leg portion 15a to the lid 12 of the sheet metal container 7 through the vibration isolating member 17.

Further, the vibration of the compressor 15 is transmitted from the discharge pipe 16 of the compressor 15 to the hot water heat exchanger 10, and noise is generated from the foam insulation container 6.
Further, the refrigerant pressure pulsation generated in the compressor 15 propagates from the discharge pipe 16 to the refrigerant in the hot water heat exchanger 10, and vibration is generated in the piping and the hot water heat exchanger 10 in the propagation path, Noise is generated from the foam insulation container 6.

  In the present embodiment, since the plurality of convex portions 6a on the upper and outer wall surfaces of the foam heat insulating container 6 are in reliable contact with the inner wall surface of the lid 12 of the sheet metal container 7, the lid is formed by the contact portion between the convex portion 6a and the lid 12. 12 is suppressed, and transmission to the entire sheet metal container 7 is suppressed. Moreover, since the noise which comes out from the upper part of the foam heat insulation container 6 is insulated by contact with the convex part 6a and the inner wall surface of the lid | cover 12, the noise generation from the sheet metal container 7 of the hot water supply outdoor unit 100 can be suppressed.

  Since the convex portion 6a on the upper and outer wall surfaces of the foam heat insulating container 6 is partially in contact with the inner wall surface of the lid 12 of the sheet metal container 7, only the convex portion 6a is deformed even if the fitting between both is tight, the contact The force does not become excessive, and the foam insulation container 6 and the sheet metal container 7 are not greatly deformed. Therefore, since the fitting between the foam heat insulating container 6 and the sheet metal container 7 can be set to a certain degree, it is not necessary to increase the molding accuracy for fitting management of both of them, and the molding can be performed at low cost. Moreover, since the convex part 6a of the foam heat insulation container 6 is shape | molded integrally with the foam heat insulation container 6, it becomes possible to shape | mold further cheaply.

Embodiment 2. FIG.
In the first embodiment, the convex portion 6a of the foam insulation container 6 is formed integrally with the foam insulation container 6. Next, when the sound absorption effect of noise leaking from the foam insulation container 6 is increased, Or Embodiment 2 which forms a convex part by attaching another member, such as a sound-absorbing material, to the foam heat insulation container 6 when it is impossible to provide the foaming heat insulation container 6 with the convex part 6a of integral molding is demonstrated.

  FIG. 7 is a perspective view showing the foam insulation container 6 according to the second embodiment. As shown in FIG. 7, a sound absorbing material 8 is bonded to the corner of the upper outer wall of the foam heat insulating container 6. The material of the sound absorbing material 8 is, for example, a polyether-based foam or a flame retardant / post-treated foam.

  Since the sound absorbing material 8 bonded to the upper and outer corners of the outer wall surface of the foam heat insulating container 6 reliably contacts the inner wall surface of the lid 12 of the sheet metal container 7, the noise emitted from the foam heat insulating container 6 is absorbed by the sound absorbing material 8, Generation of noise in the hot water supply outdoor unit 100 can be suppressed.

Embodiment 3 FIG.
The first and second embodiments described above relate to the hot water supply outdoor unit 100. However, the hot water supply outdoor unit 100 according to the first or second embodiment is connected to the air conditioning indoor unit by a refrigerant pipe, and hot water supply air is supplied. You may comprise a harmony machine.

  This hot water supply air conditioner includes the hot water supply outdoor unit 100 as described above, and is capable of air conditioning and hot water supply to a connected hot water storage tank.

FIG. 3 shows the first embodiment and is an exploded perspective view of the hot water supply outdoor unit 100. FIG. Fig. 5 shows the first embodiment, and is a front view of a hot water supply outdoor unit 100. FIG. 3 shows the first embodiment, and is a perspective view showing the inside of a hot water supply outdoor unit 100. FIG. FIG. 2 is a diagram showing the first embodiment, and is a perspective view showing a heat exchanger 10 for hot water inside the hot water supply outdoor unit 100. FIG. 5 shows the first embodiment and is a perspective view of the foam insulation container 6. FIG. 5 shows the first embodiment, and is a transparent front view showing a state in which the foam heat insulating container 6 is housed in the sheet metal container 7. FIG. 5 is a diagram showing the second embodiment, and is a perspective view showing a foam insulation container 6.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Housing | casing, 2 outdoor unit base, 2a leg, 3 front panel, 3a blower outlet, 3b suction inlet, 4 side panel, 5 top panel, 6 foam insulation container, 6a convex part, 7 sheet metal container, 8 sound-absorbing material, 9 Heat exchanger for refrigeration cycle, 10 heat exchanger for hot water, 11 housing wall, 12 lid, 14 blower fan motor, 15 compressor, 15a leg, 16 discharge pipe, 17 anti-vibration member, 18 water supply pump, 100 Hot water outdoor unit.

Claims (5)

In the hot water supply outdoor unit having a heat exchanger for hot water in which the refrigerant in the refrigeration cycle circuit and the water in the hot water circuit exchange heat,
A foam insulation container for storing the heat exchanger for hot water;
A sheet metal container for storing the foam insulation container;
A hot water supply outdoor unit comprising a convex portion provided on an outer wall surface of the foam heat insulating container and in contact with an inner wall surface of the sheet metal container.   The hot water supply outdoor unit according to claim 1, wherein the convex portion is integrally formed with the foam heat insulating container.   The hot water supply outdoor unit according to claim 1, wherein the convex portion of the separate member is attached to the foam insulation container.   The hot water outdoor unit according to claim 3, wherein the separate member is made of a sound absorbing material.   A hot water supply air conditioner, wherein the hot water supply outdoor unit according to any one of claims 1 to 4 and the air conditioning indoor unit are connected by a refrigerant pipe to perform air conditioning and hot water supply.

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