JP3843007B2 - Heat pump type water heater - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
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.
[0002]
[Prior art]
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.
[0003]
[Problems to be solved by the invention]
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.
[0004]
This invention is made in view of such a situation, and it aims at improving the workability | operativity of the water piping construction which connects the freezer part and a hot water storage tank part while reducing the installation space of a freezer part. To do.
[0005]
[Means for Solving the Problems]
To achieve the above object, the present invention according to claim 1, the compressor, hot water heater for heating the hot water in the discharge gas from the compressor, expansion device, such as an electric expansion valve, An outdoor heat exchanger that exchanges heat with outside air and performs an evaporating action, an accumulator, a refrigerant circuit connected in this order, a refrigeration unit that includes an outdoor fan that sends outside air to the outdoor heat exchanger, and the hot water supply A hot water storage tank that stores hot water heated by a heater, a hot water storage pump that circulates hot water in the hot water storage tank to the hot water heater, and a hot water storage unit that is configured separately from the refrigeration unit; The refrigeration unit has two water pipe joints for connecting the hot water heater and the hot water storage tank with a pair of water pipes on the back side having an outside air inlet port , The two water distributions Catch, the positioned rear lower portion of the refrigeration unit while being arranged in the height direction a row, characterized in that the pipe connection direction 360 ° variable consists of a right angle elbow for water pipes connected to each other.
[0006]
If comprised in this way, since the refrigeration unit and the hot water storage unit are comprised separately, the installation place of the refrigeration unit which needs to suck in and exhaust the outside air, and the intake and exhaust of the outside air in this way can be performed. Unnecessary hot water storage unit installation locations can be selected individually. In addition, since the two water pipe joints for the pair of water pipes connecting the refrigeration unit and the hot water storage unit as described above are provided on the back surface of the refrigeration unit having the outside air inlet, By installing the refrigeration unit along the wall surface, the water piping 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 it can be reduced.
[0007]
Each of the two water pipe joints is arranged in a row in the height direction at the lower part of the back of the refrigeration unit, and is composed of right angle elbows for water pipe connection, and the pipe connection direction is variable by 360 °. Therefore, depending on the situation at the installation site, the pipe connection direction of the water pipe joint can be changed freely, so the water pipe work between the refrigeration unit and the hot water storage unit can be easily performed in a narrow space. be able to. This also makes it possible to reduce the required installation space for the refrigeration unit including the space for laying the water pipe.
[0008]
[0009]
[0010]
[0011]
[0012]
DETAILED DESCRIPTION OF THE INVENTION
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.
[0013]
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.
[0014]
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. At least an outdoor heat exchanger 14 and an accumulator 15 that perform evaporation are provided. These devices are sequentially connected to form the refrigerant circuit 10.
[0015]
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 of these sections 21 and 22 are generally divided for each section.
[0016]
The casing of the compressor unit 21 is substantially U-shaped in 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 formed. The outer plate 33 and the top plate 34 are provided (see FIGS. 2, 5, 6, and 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, 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).
[0017]
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).
[0018]
Next, the casing of the heat exchanger section 22 includes a bottom plate 51, a flat plate-like outer plate 52 that makes up most of the back plate (on the back), a remaining back plate 53a (on the back), and a right side (on the side). The plate 53b and the front plate 53c (front surface) 53c are divided into a substantially J-shaped, that is, a multi-surface 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.
[0019]
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.
[0020]
And the hot water heater 12 is arrange | positioned in the heat exchanger part 22 divided and formed in this way. Moreover, the attachment for attaching the two water piping joints 64 for the water piping 63 which connects the hot water heater 12 and the hot water storage tank 81 to the back surface in the bottom plate 51, ie, the part facing the flat outer plate 52. A plate 55 is erected. 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.
[0021]
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.
[0022]
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.
[0023]
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.
[0024]
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 installation place of the refrigeration unit 1.
[0025]
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.
[0026]
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.
[0027]
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.
[0028]
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.
[0029]
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.
[0030]
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.
[0031]
【The invention's effect】
Since the present invention is constructed as described above, so the following effects. The refrigeration unit and the hot water storage unit can be freely installed according to the situation of the installation location. Also, by laying the back side of the refrigeration unit with the outside air intake port along the wall surface, the water piping connecting the refrigeration unit and the hot water storage unit can be arranged along the wall surface without being interfered with each other. The required installation space of the refrigeration unit including the laying space of the water pipe can be reduced.
[0032]
In addition, the pipe connection direction of the water pipe joint becomes free, and the water pipe work between the refrigeration unit and the hot water storage unit can be efficiently performed according to the situation of the installation site. Thereby, the required installation space of the refrigeration unit including the laying space of the water pipe can be further reduced.
[0033]
[0034]
[0035]
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a heat pump hot water supply apparatus according to an embodiment of the present invention.
FIG. 2 is a front view of the refrigeration unit according to the embodiment.
FIG. 3 is a plan view also serving as an installation example of the refrigeration unit in the embodiment.
FIG. 4 is an equipment plan view of a refrigeration unit according to the embodiment.
FIG. 5 is a rear view of the refrigeration unit in the same embodiment.
FIG. 6 is a right side view (side view of a heat exchanger section) of the refrigeration unit in the same embodiment.
FIG. 7 is an exploded perspective view for explaining the casing structure of the refrigeration unit in the same embodiment.
[Explanation of symbols]
1 Refrigeration unit
2 Hot water storage unit 21 Compressor part 22 Heat exchanger part 33b (A part of the outer plate attached to the back surface having an outside air inlet) Back 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 (Polyhedral shape) outer plate 53a (Part of the outer plate attached to the back surface having the outside air inlet) The remaining part of the back plate 57 Power terminal board mounting plate
63 Water piping 64 Water piping joint

Claims (1)

Compressor, hot water heater for heating the hot water in the discharge gas from the compressor, expansion device, such as an electric expansion valve, an outdoor heat exchanger and evaporates action by outside air heat exchanger, an accumulator, in order of the compressor A refrigeration unit provided therein with a connected refrigerant circuit and an outdoor fan for sending outside air to the outdoor heat exchanger;
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. It consists of a hot water storage unit,
In the refrigeration unit, two water pipe joints for connecting the hot water heater and the hot water storage tank with a pair of water pipes are arranged up and down on the back surface having an outside air inlet ,
The two water pipe joints are arranged in a row in the height direction at the lower rear portion of the refrigeration unit, and are composed of water pipe connection right angle elbows so that the pipe connection direction is variable by 360 °. A heat pump type hot water supply apparatus characterized by that .

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