JP2006308282A - Heat pump type hot-water supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce an installation space of a refrigeration unit part, and to improve workability of a water pipe work for connecting the refrigeration unit part to a hot-water storage tank part. <P>SOLUTION: This device comprises the refrigeration unit 1 equipped with main components of a coolant circuit and a blower fan inside a casing K; and a hot-water storage unit equipped inside with the hot-water storage tank and a hot-water supply pump for circulating hot water to be supplied in the hot-water storage tank into a hot-water heater, and constituted separately from the refrigeration unit 1. In the refrigeration unit 1, a plurality of water pipe joints 64, 64 for connecting the hot-water heater to the hot-water storage tank by a plurality of water pipes are arranged on the upside and downside at a prescribed interval on the lower part on the back of the casing K having an outside air suction port 37, and the plurality of water pipe joints 64 are constituted of rotatable rectangular elbows for water pipe connection wherein the pipe connection direction can be varied. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a heat pump type hot water supply apparatus that pumps evaporative heat of refrigerant from outdoor air using an outdoor heat exchanger and heats hot water using heat of a compressor discharge gas.

A conventional heat pump type hot water supply apparatus pumps the heat of evaporation of refrigerant from outdoor air using an outdoor heat exchanger, heats hot water using the heat of the compressor discharge gas using a hot water heater, and heats the hot water into a hot water storage tank. A compressor that compresses refrigerant, a hot water heater that heats hot water using compressor discharge gas, an expansion device, an outdoor heat exchanger that exchanges heat with outdoor air, and is attached to the intake side of the compressor And a hot water storage tank portion including a hot water supply pump and a hot water storage tank. In addition, the refrigeration unit and the hot water storage tank are configured as separate units, requiring water piping work to connect the two units.
nothing special

  However, the conventional heat pump hot water supply apparatus has not been sufficiently studied to reduce installation space including water piping work and to improve workability of water piping work. Therefore, there was room for improvement.

  The present invention has been made in view of the above circumstances, and reduces the installation space of the refrigeration unit part and improves the workability of water piping work for connecting the refrigeration unit part and the hot water storage tank part. Objective.

  In the first aspect of the present invention, the casing includes a main component of a refrigerant circuit having at least a compressor, a hot water heater, an expansion device, and an evaporator, and a blower fan that sends outside air to the evaporator. A refrigeration unit, a hot water storage tank that stores hot water heated by the hot water heater, and a hot water pump that circulates the hot water in the hot water tank to the hot water heater. A hot water storage unit configured as a body, and the refrigeration unit is configured to connect the hot water heater and the hot water storage tank to a lower part of the back surface of a casing having an outside air inlet through a plurality of water pipes. A plurality of water pipe joints are arranged at predetermined intervals above and below, and the plurality of water pipe joints are configured with a rotatable water pipe connection right angle elbow with variable pipe connection direction. The features.

  According to a second aspect of the present invention, in the heat pump type hot water supply apparatus according to the first aspect, the rotation angle of the right angle elbow for water pipe connection is 360 °.

  According to the first aspect of the present invention, since the refrigeration unit and the hot water storage unit are configured as separate bodies, the installation location of the refrigeration unit that needs to suck and exhaust the outside air, and the intake of the outside air in this way. The installation location of the hot water storage unit that does not need to be exhausted can be individually selected. In addition, as described above, a plurality of water pipe joints for a plurality of water pipes connecting the refrigeration unit and the hot water storage unit are provided on the back surface of the refrigeration unit having the outside air intake port. By installing the refrigeration unit along the wall surface, the water pipe connecting the refrigeration unit and the hot water storage unit can be arranged along the wall surface in an attractive manner. The required installation space of the refrigeration unit including can be reduced. In addition, the plurality of water pipe joints are constituted by pivotable water pipe connection right angle elbows with variable pipe connection directions, so that depending on the situation of the installation site, the water pipe joint pipe connection direction can be changed. It becomes possible to change the water piping work between the refrigeration unit and the hot water storage unit in a narrow space. This also makes it possible to reduce the required installation space for the refrigeration unit including the space for laying the water pipe.

  According to invention of Claim 2, the freedom degree of the pipe connection direction of a water pipe joint can be raised further.

  The present invention is a refrigeration unit comprising main components of a refrigerant circuit having at least a compressor, a hot water heater, an expansion device, and an evaporator, and a blower fan that sends outside air to the evaporator, and a casing. A hot water storage tank that stores hot water heated by the hot water heater, and a hot water pump that circulates the hot water in the hot water tank to the hot water heater, are configured separately from the refrigeration unit. A hot water storage unit, and the refrigeration unit has a plurality of water pipes for connecting the hot water heater and the hot water storage tank to the lower part of the back surface of the casing having an outside air inlet through a plurality of water pipes. The joints are arranged up and down at a predetermined interval, and the plurality of water pipe joints are composed of a rotatable water pipe connecting right angle elbow with variable pipe connection direction. For facilities embodiment will be described.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic configuration explanatory view of a heat pump hot water supply apparatus according to an embodiment of the present invention, FIG. 2 is a front view of a refrigeration unit according to an embodiment of the present invention, and FIG. 3 is an example of installation of the refrigeration unit. 4 is a plan view of the equipment of the refrigeration unit, FIG. 5 is a rear view of the refrigeration unit, and FIG. 6 is a right side view of the refrigeration unit (side view of the heat exchanger section). FIG. 7 is an exploded perspective view for explaining the casing structure of the refrigeration unit. In FIG. 1, solid arrows indicate the flow of the refrigerant.

  The heat pump hot water supply apparatus according to the present embodiment includes a refrigeration unit 1 and a hot water storage unit 2 as shown in FIG. The refrigeration unit 1 and the hot water storage unit 2 are configured as separate bodies.

  As shown in FIGS. 1 and 4, the refrigeration unit 1 exchanges heat with a compressor 11, a hot water heater 12 that heats hot water using compressor discharge gas, an expansion device 13 such as an electric expansion valve, and outside air. An outdoor heat exchanger (evaporator) 14 that performs an evaporating action and an accumulator 15 are provided. These devices are sequentially connected to form the heat pump refrigerant circuit 10.

  In addition, the refrigeration unit 1 includes a compressor unit 21 including a compressor 11, an expansion device 13, an outdoor heat exchanger 14, an accumulator 15, an outdoor fan 16, and the like by a partition wall 33c (see FIGS. 1, 4, and 7). The heat exchanger section 22 is provided with a hot water heater 12 and the like, and the casings K1 and K2 of these sections 21 and 22 are also generally divided for each section.

  The casing K1 of the compressor unit 21 is substantially U-shaped in a plan view in which a bottom frame 31, a front plate 32, a left side plate 33a, a back plate 33b, and a partition wall 33c (with the heat exchanger unit 22) are integrally configured. The outer plate | board 33 and the top plate 34 are provided (refer FIG. 2, 5, 6, 7). A blow grill 35 is formed on the front plate 32, and suction grills (outside air intake ports) 36, 37 are formed on the left side plate 33a and the back plate 33b. Further, a drain drain port 31 a is provided on the left side of the bottom frame 31. The compressor section 21 is partitioned and formed by such a casing K1, and the inside thereof is further partitioned into a heat exchange chamber 41 and an equipment chamber 42 by a partition wall 38 (see FIGS. 1, 4 and 7). .

  In the heat exchange chamber 41, the outdoor heat exchanger 14 formed in an L shape so as to face the suction grill 36 of the left side plate 33a and the suction grill (outside air inlet) 37 of the back plate 33b is disposed. An outdoor fan 16 is disposed on the front surface of the outdoor heat exchanger 14 (see FIG. 4). A compressor 11, an expansion device 13, an accumulator 15, and an electrical component box 45 are disposed in the equipment room 42. (Refer to FIG. 1) Note that the partition wall 33c is formed with a service window 46 for the electrical component box 45, a through-hole 47 for penetrating refrigerant piping, electric wires, and the like (see FIG. 7).

  Next, the casing K2 of the heat exchanger section 22 includes a bottom plate 51, a flat plate-like outer plate 52 that constitutes most of the back plate (on the back), a back plate remaining portion 53a (on the back), and (on the side). The right side plate 53b and the front plate 53c (front surface) 53c are formed of a substantially J-shaped, that is, a polyhedral outer plate 53 and a top plate 54, which are integrally formed. The flat plate-like outer plate 52 and the polyhedral outer plate 53 are detachably fixed to the partition wall 33c and the bottom plate 51 by screws or the like. Therefore, the multi-faced outer plate 53 is detachable from the compressor unit 21.

  In the present invention, the “back surface having an outside air inlet” includes the back plate 33b (of the outer plate 33), the planar outer plate 52, and the back plate 53a (of the outer plate 53). It means a surface. Further, “the outer plate attached to the back surface (having an outside air inlet)” means a generic name of the back plate 33b (of the outer plate 33), the planar outer plate 52, and the back plate 53a (of the outer plate 53). To do. That is, the casing K as the entire exterior body of the refrigeration unit 1 is configured by the casing K1 of the compressor unit 21 and the casing K2 of the heat exchanger unit 22.

  And the hot water heater 12 is arrange | positioned in the heat exchanger part 22 formed compartmentally as mentioned above. Further, two water pipe joints 64 for the water pipe 63 for connecting the hot water heater 12 and the hot water storage tank 81 are spaced apart from each other on the back surface of the bottom plate 51, that is, the portion facing the flat outer plate 52. A mounting plate 55 is installed upright for mounting. The two water pipe joints 64 are attached to the attachment plate 55 so that the pipe connection portions are outside the flat plate-like outer plate 52 and are arranged linearly in the height direction. . Further, the water pipe joint 64 is a right angle elbow for water pipe connection, and the pipe connection direction is 360 ° variable (rotatable) in a plane parallel to the back surface.

  The flat outer plate 52 has a notch 56 for escaping the water pipe joint at the lower part thereof. The notch 56 is formed in the outer plate 52 so as to extend linearly from the lower end in the height direction. The flat outer plate 52 includes a power terminal board mounting plate 57 for mounting the power terminal board 65 on the inner surface of the upper portion. Further, the flat outer plate 52 is provided with a service lid 52 a on the front side of the power terminal board mounting plate 57 so that the power supply wiring can be easily attached to and detached from the power terminal board 65.

  In the refrigeration unit 1 formed as described above, handles 71, 72, and 73 are attached to the left side plate 33a, the planar back plate 52, and the multi-sided right side plate 53b, respectively.

  Although the detailed structure diagram is omitted, the hot water storage unit 2 includes a hot water storage tank 81 and is configured as a unit independent of the refrigeration unit 1 as can be seen from FIG. As shown in FIG. 1, the hot water storage tank 81 is connected to the hot water heater 12 by a pair of water pipes 63 on the forward side and the return side, and in the middle of the water pipe 63 on the forward side, A water pump 82 is provided. The hot water storage tank 81 is connected with a hot water supply pipe 84 connected to the hot water tap and a replenishment water pipe 85 for replenishing the hot water storage tank 81 with tap water. The hot water supply pump 82 is provided in the hot water storage unit 2.

  The heat pump type hot water supply apparatus configured as described above is installed, for example, as shown in FIG. That is, the refrigeration unit 1 that needs to suck and exhaust outside air is attached to the corner portion of the wall surface W of the veranda with the back surface having the suction grille (outside air intake port) 37 as the wall surface side. On the other hand, since the hot water storage unit 2 does not take in or exhaust outside air, the hot water storage unit 2 is attached to an appropriate place completely different from the place where the refrigeration unit 1 is installed.

  In addition, the water pipe 63 necessary for connecting the refrigeration unit 1 and the hot water storage unit 2 is provided vertically on the outer plate portion where the water pipe joint 64 is attached to the back of the refrigeration unit 1 (this implementation) In the embodiment, since it is attached to the planar outer plate 52 part forming a part of the outer plate attached to the back surface), the water pipe 63 is laid in order along the wall surface W without interfering with each other. Can do. Further, the water pipe joint 64 is a right angle elbow for water pipe connection, and the pipe connection direction can be changed by 360 ° in a plane parallel to the back surface. For example, the pipe connection direction is changed to the right (solid line) depending on the mounting position of the hot water storage unit 2. The direction can be changed directly to the left direction (the B direction indicated by a broken line), and piping can be easily and directly made from the refrigeration unit 1 to the target direction. Therefore, the space required for the water pipe 63 can be reduced, and finally the dimension D (see FIG. 3) including the space of the water pipe 63 can be reduced, and the refrigeration unit 1 can be installed. Space can be reduced.

  In the refrigeration unit 1 itself, since the compressor part 21 and the heat exchanger part 22 are arranged on the left and right sides of the surface having the suction grille (outside air inlet) 37, the dimension T in the front-rear direction (FIG. 3) and the installation space of the refrigeration unit 1 can be further reduced.

  The power supply wiring work required for installing the refrigeration unit 1 is connected so that the power terminal board 65 is attached in the vicinity of the water pipe joint 64 so that it is not conspicuous on the back side of the refrigeration unit 1. Can improve the appearance. Moreover, since such wiring work can be performed from the service lid 52a provided on the planar outer plate 52 constituting the back plate of the heat exchanger section 22, the work is facilitated.

  Next, when checking the interior after installing the refrigeration unit 1, especially when checking the water pipe connection part and the refrigerant pipe connection part inside the heat exchanger part 22, By removing the polyhedral outer plate 53 formed integrally with the three outer plates from the compressor unit 21, the inside of the heat exchanger unit 22 can be opened to multiple sides, and the inside of the heat exchanger unit 22 can be opened. Inspection, repair, etc. of the connection part of the water pipe and the refrigerant pipe can be easily performed.

  Next, attachment of the outer plate in a factory or the like is facilitated as follows. That is, in the refrigeration unit 1, the water pipe joints 64 are arranged in a row in the height direction at the lower part of the rear surface of the refrigeration unit 1 and are attached to the rear surface (in this embodiment, the outer plate attached to the rear surface). A notch 56 for releasing these water pipe joints 64 is formed in the planar outer plate 52) that extends in a straight line from the lower edge of the outer plate 52 in the height direction. The outer plate 52 can be placed at a predetermined position by shifting the outer plate 52 downward from the notch 56 so that the water pipe joint 64 protrudes. Work can be facilitated.

  In addition, this invention is not limited to the above-mentioned embodiment, For example, attachment of the heat exchanger part 22 of the refrigeration unit 1 can be changed symmetrically. That is, in the present embodiment, the example in which the heat exchanger unit 22 is arranged on the right side of the compressor unit 21 is shown. On the contrary, the heat exchanger unit 22 is arranged on the left side of the compressor unit 21. It is good.

It is a schematic equipment configuration explanatory view of a heat pump type hot water supply apparatus according to an embodiment of the present invention. It is a front view of the refrigeration unit in the embodiment. It is a top view which served as the installation example of the refrigeration unit in the embodiment. It is an apparatus plane arrangement | positioning figure of the refrigeration unit in the embodiment. It is a rear view of the refrigeration unit in the same embodiment. It is a right view (side view of a heat exchanger part) of the refrigeration unit in the embodiment. It is a disassembled perspective view for demonstrating the casing structure of the freezing unit in the embodiment.

Explanation of symbols

K casing of refrigeration unit K1 casing of compressor section K2 casing of compressor section 1 refrigeration unit 2 hot water storage unit 21 compressor section 22 heat exchanger section 33b (part of outer plate attached to back surface having outside air inlet) Plate 37 Outside air inlet (suction grill)
52 (Part of the outer plate attached to the back surface having the outside air inlet) Planar outer plate 52a Service lid 53 (Multi-faced) outer plate 53a (Part of the outer plate attached to the back surface having the outside air inlet) Remaining part of back plate 57 Power terminal board mounting plate 63 Water piping 64 Water piping joint

Claims (2)

A refrigeration unit having at least main components of a refrigerant circuit having a compressor, a hot water heater, an expansion device and an evaporator, a blower fan for sending outside air to the evaporator, and the hot water heating A hot water storage tank for storing hot water heated by a heater, a hot water pump for circulating hot water in the hot water storage tank to the hot water heater, and a hot water storage unit configured separately from the refrigeration unit Consisting of
The refrigeration unit has a plurality of water piping joints for connecting the water heater and the hot water storage tank with a plurality of water pipes vertically below a lower part of the back surface of the casing having an outside air inlet. A heat pump type hot water supply apparatus characterized in that the plurality of water pipe joints are configured with a rotatable water pipe connecting right angle elbow whose pipe connection direction is variable while being arranged at intervals.   The heat pump type hot water supply apparatus according to claim 1, wherein a rotation angle of the right angle elbow for connecting water pipes is set to 360 °.

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