JP2011075276A - Heat pump type water heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To downsize a device and to improve an appearance of a heat pump type water heater. <P>SOLUTION: A depression part 18 depressed toward an interior of an outdoor unit 1 is provided in a back face 10a or a side face 10b of an outdoor unit casing 10 of the outdoor unit 1, and a connection part 15 of a water pipe supplying water is provided in the depression part 18. It is also desirable to provide a drain plug for draining water from the water pipe in the depression part 18. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a hot water supply heat exchanger that performs heat exchange between a refrigerant and water, and a heat pump type hot water heater having a hot water storage tank that stores hot water heated by the hot water supply water heat exchanger.

  An outdoor air heat exchanger that exchanges heat between the refrigerant and outdoor air, a hot water supply heat exchanger that exchanges heat between the refrigerant and water, the outdoor air heat exchanger, and the hot water supply heat exchange There is a heat pump type hot water heater provided with an outdoor unit having an outdoor unit housing for accommodating a vessel. Further, the hot water heated by the hot water supply heat exchanger is stored in a hot water storage tank in a hot water supply unit provided indoors through a water pipe connected to the outdoor unit. Here, the connection portion between the outdoor unit and the water pipe is provided to protrude from the back surface or side surface of the outdoor unit housing. For example, it is described in Patent Document 1.

  Further, there is a heat pump type water heater having a water drain plug for draining water in the water pipe in order to prevent freezing of water in the water pipe when not used for a long time (for example, Patent Document 2, 3). As shown in Patent Documents 2 and 3, the water drain plug is provided so as to protrude from the back surface and the side surface of the outdoor unit housing, similarly to the connection portion between the outdoor unit and the water pipe.

JP 2003-185250 A JP 2004-286261 A JP 2005-147620 A

  However, as in Patent Documents 1 to 3, when the connection portion between the outdoor unit and the water pipe and the water drain plug are provided so as to protrude from the back and side surfaces of the outdoor unit housing, the protrusion The size of the device will increase due to the part that has been removed. In addition, there is a problem that the appearance of the outdoor unit is poor.

  Accordingly, the present invention has been made in view of the above circumstances, and its object is to reduce the size of the heat pump water heater and improve the appearance of the appearance.

  In order to achieve the above object, the present invention provides a heat pipe type water heater that heats water through a heat exchanger that exchanges heat with a compressed refrigerant, and sends the heated water to a hot water storage tank to store hot water. It is. For example, an outdoor air heat exchanger that exchanges heat between refrigerant and outdoor air, a hot water supply heat exchanger that exchanges heat between the refrigerant and water, at least the outdoor air heat exchanger and the hot water supply An outdoor unit having an outdoor unit housing for housing a water heat exchanger, a hot water supply unit having at least a hot water storage tank for storing water heated in the hot water supply water heat exchanger of the outdoor unit, the outdoor unit, and the And a water pipe connected to a hot water supply unit and configured to circulate water between the hot water supply water heat exchanger and the hot water storage tank, the heat pump water heater comprising: A recessed portion that is recessed toward the inside of the outdoor unit is provided on the back surface or the side surface, and a connection portion between the outdoor unit and the water pipe is provided in the recessed portion. Configured as a heat pump water heater to. Specifically, it is conceivable that the depressed portion is provided at a lower end of a corner portion formed on a back surface and a side surface of the outdoor unit housing.

  Thereby, since the said connection part does not protrude from the said outdoor unit housing | casing, it can reduce an apparatus size and can improve the appearance of an external appearance. Furthermore, since the connecting portion is depressed on the outdoor unit housing side, it is not necessary to use an elbow (L-shaped pipe) for the connecting portion, and cost can be reduced.

  Further, in the configuration including a water drain plug for draining water from the water pipe, it is desirable that the water drain plug is also provided in the depressed portion so as not to protrude from the outdoor unit casing, similarly to the connection portion.

  Furthermore, if an opening communicating with the inside of the outdoor unit is provided in the depressed portion, a cooling action of, for example, an electronic component provided inside the outdoor unit can be expected, and the life can be extended. Can be planned.

  Moreover, you may provide the wiring insertion port for inserting a wiring in the said outdoor unit from the outside in the said depression part. Thereby, compared with the case where the said wiring insertion port is provided separately, components, such as a cover member of this wiring insertion port, can be reduced.

  By the way, the outdoor unit is provided with a drain pan for draining the water condensed in the outdoor unit from a predetermined drain, but there is a possibility that dew condensation may occur even in the depressed portion. Therefore, it is desirable to provide a drainage means for guiding the water in the depressed portion to the drain pan. Thereby, the drain pan can also be used to drain the water in the depressed portion from the predetermined drainage port.

  According to the present invention, since the connecting portion does not protrude from the outdoor unit housing, the size of the device can be reduced and the appearance of the appearance can be improved as compared with the conventional device in which the connecting portion protrudes. Can do. In addition, since the connection portion is depressed on the outdoor unit housing side, it is not necessary to use an elbow (L-shaped pipe) for the connection portion, and the cost can be reduced.

  Furthermore, if the water drain plug for draining water from the water pipe is also provided in the recessed portion so as not to protrude from the outdoor unit housing, the water drain plug is provided to protrude. Compared with the conventional device, the device size can be reduced and the appearance of the device can be improved.

The block diagram which shows schematic structure of the heat pump type water heater which concerns on embodiment of this invention. The perspective view which looked at the outdoor unit which the heat pump type water heater which concerns on embodiment of this invention has from the back side. The enlarged view of the depression part provided in the outdoor unit which the heat pump type water heater which concerns on embodiment of this invention has. The figure which concerns on other embodiment of this invention explaining the modification of an outdoor unit.

  Embodiments of the present invention will be described below with reference to the accompanying drawings for understanding of the present invention. In addition, the following embodiment is an example which actualized this invention, Comprising: It is not the thing of the character which limits the technical scope of this invention.

  FIG. 1 is a block diagram showing a schematic configuration of a heat pump type hot water heater X according to an embodiment of the present invention. FIG. 2 is a perspective view of an outdoor unit 1 of the heat pump type hot water heater X as viewed from the back side. FIG. 3 is an enlarged view of the depressed portion 4 provided in the outdoor unit 1.

  First, a schematic configuration of a heat pump type hot water heater X according to an embodiment of the present invention will be described with reference to FIG.

  As shown in FIG. 1, the heat pump type hot water heater X is roughly configured to include an outdoor unit 1 provided outside and a hot water supply unit 2 provided indoors, and the outdoor unit 1 and the hot water unit 2 are provided. Are connected by a water pipe 3 for flowing water between the outdoor unit 1 and the hot water supply unit 2. In the heat pump type hot water heater X, the water supplied from the water supply port 4 is heated to a predetermined temperature and then supplied from the hot water supply port 5.

  The outdoor unit 1 includes a compressor 11 that compresses a refrigerant, and a hot water supply water heat exchanger 12 that heats the water by exchanging heat between the high-temperature and high-pressure refrigerant compressed by the compressor 11 and water. And an expander 13 for expanding the refrigerant after heat exchange with water in the hot water supply heat exchanger 12, and heat exchange between the low-temperature and low-pressure refrigerant expanded in the expander 13 and outdoor air. An outdoor air heat exchanger 14 for cooling the refrigerant, a blower fan 14a for blowing outdoor air to the outdoor air heat exchanger 14, a connection portion 15 for connecting the water pipe 3, A hot water supply heat exchanger 12 and a water drain plug 16 for draining water in the water pipe 3 are schematically configured.

  On the other hand, the hot water supply unit 2 is heated by heat exchange with the refrigerant in the hot water supply water heat exchanger 12 of the outdoor unit 1, and stores a hot water storage tank 21 for storing hot water flowing in through the water pipe 3, A circulation pump 22 for circulating water through the water pipe 3, a mixing valve 23 for mixing hot water stored in the hot water storage tank 21 and water supplied from the water supply port 4 at a predetermined ratio, and the water pipe And a connection portion 24 to which 3 is connected. Although not shown, the outdoor unit 1 and the hot water supply unit 2 are provided with a control circuit for controlling the components. For example, in the heat pump type water heater X, the amount of water supplied from the water supply port 4, the amount of hot water supplied from the hot water supply port 5, the mixing ratio in the mixing valve 23, and the like are controlled by the control circuit (not shown).

  Next, the external configuration of the outdoor unit 1 will be described with reference to FIG.

  The outdoor unit 1 includes an outdoor unit housing 10 that houses the compressor 11, the hot water supply heat exchanger 12, the expander 13, the outdoor air heat exchanger 14, and the blower fan 14a. Further, as shown in FIG. 2, the outdoor unit housing 10 has a drain port 17 for draining water or the like dewed in the outdoor unit 1 to the outside, and a depression that sinks toward the inside of the outdoor unit 1. A portion 18 is provided.

  The drain port 17 drains water guided by a groove formed on the bottom surface (base) of the outdoor unit 1 to the outside. In this case, the bottom surface corresponds to a drain pan. Of course, a configuration having a drain pan configured separately from the bottom surface may be used.

  The depressed portion 18 is provided at the lower end of the corner portion formed by the back surface 10 a and the side surface 10 b of the outdoor unit housing 10. Conventionally, the connection portion 15 and the water drain plug 16 are provided so as to protrude from the outdoor unit housing 10. However, in the outdoor unit 1, the connection portion 15 and the water drain plug 16 are disposed in the recessed portion 18. (See FIG. 3).

  Hereinafter, the depressed portion 18 provided in the outdoor unit housing 10 will be described with reference to FIG. 3.

  As shown in FIG. 3, the recessed portion 18 is provided with the connecting portion 15 arranged in parallel in the vertical direction and the drain plug 16 arranged in parallel in the left and right below the connecting portion 15. In the present embodiment, as shown in FIG. 3, the wiring connection portion 15 and the water drain plug 16 are disposed on a surface parallel to the back surface 10 a in the recessed portion 18 of the outdoor unit housing 10. However, the present invention is not limited to this. For example, it may be disposed on a surface parallel to the side surface 10b.

  Thus, in the outdoor unit 1, since the connecting portion 15 and the water drain plug 16 are accommodated in the recessed portion 18, the apparatus size of the outdoor unit 1 can be reduced, The appearance of the outdoor unit 1 can be improved. Further, in the configuration in which the connection portion 15 protrudes from the outdoor unit housing 10 as in the conventional device (for example, see Patent Documents 1 to 3), the installation space can be reduced by using an elbow for the wiring connection portion 15. In the outdoor unit 1, since the connection portion 15 is provided in the depressed portion 18, it is not necessary to use an elbow for the connection portion 15, and the configuration of the connection portion 15 is simplified. By doing so, it is possible to reduce the cost.

  As shown in FIG. 3, the depressed portion 18 is provided with a communication port 31 that communicates with the interior of the outdoor unit 1 and a wiring insertion port 32 for inserting a wire into the outdoor unit 1. ing.

  As described above, by providing the communication port 31 communicating with the inside of the outdoor unit 1, it becomes possible to take outside air into the outdoor unit 1 and exhaust the air inside the outdoor unit 1, For example, an electronic component such as the control circuit (not shown) housed in the outdoor unit 1 is expected to be cooled, and the service life of the outdoor unit 1 can be extended. Moreover, since the depressed portion 18 is provided at the lower end of the outdoor unit housing 10 so as to be depressed toward the inside of the outdoor unit 1, there is little possibility that rainwater or the like enters the depressed portion 18. . In addition, it is desirable to provide a mesh filter or the like at the communication port 31 to prevent intrusion of insects and the like from the communication port 31.

  Conventionally (see, for example, Patent Document 1), an opening for inserting a wiring into the outdoor unit is provided with a lid member for opening and closing the opening. In the outdoor unit 1, Since the wiring insertion port 32 is provided in the depressed portion 18, there is no need to provide the lid member, and the configuration can be simplified and the appearance of the appearance can be improved.

  In addition, although the said outdoor unit housing | casing 10 is the structure by which the said depression part 18 is open | released, the structure which provides the cover member which covers the said depression part 18 is also considered as other embodiment.

(Other embodiments)
FIG. 4 is a view for explaining an outdoor unit 101 according to another embodiment of the present invention, which is a modification of the outdoor unit 1. In addition, the same code | symbol is attached | subjected to the component similar to the said outdoor unit 1 (FIGS. 1-3), and the description is abbreviate | omitted.

  In the outdoor unit 1 (see FIG. 3) described in the embodiment, since the bottom surface of the depressed portion 18 is opened, water generated by condensation in the depressed portion 18 drops from the depressed portion 18. become. That is, in the outdoor unit 1, water is drained from the two places of the drain port 17 and the depressed portion 18. Therefore, separate pipes are required to guide the water drained from the two locations of the drain port 17 and the depressed portion 18 to a predetermined position.

  However, as shown in FIG. 4, in the outdoor unit 101 according to the present embodiment, the bottom surface 101 a (base) of the outdoor unit 101 extends to the bottom of the depressed portion 18. The bottom surface 101a is formed with a groove 101b (an example of a drainage unit) that guides the water condensed in the depressed portion 18 to the drain pan (not shown) following the drain port 17. That is, in the outdoor unit 101, the drain port 17 that drains the water in the outdoor unit 1 is also used as the drain port that drains the water in the depressed portion 18.

  In the outdoor unit 101 configured as described above, the water in the depressed portion 18 is drained from the drain port 17 by the groove 101b, so that the inside of the outdoor unit 1 and the depressed portion 18 with only one pipe. It is possible to guide water generated by condensation or water drained from the water drain plug 16 to a predetermined position, and piping can be reduced.

X Heat pump type water heater 3 Water piping 4 Water supply port 5 Hot water supply port 10 Outdoor unit housing 10a Back surface 10b Side surface 11 Compressor 12 Outdoor air heat exchanger 13 Inflator 14 Hot water supply water heat exchanger 15 Pipe connection port 16 Drain plug 17 Drainage Mouth 18 Depression 21 Hot water storage tank 22 Circulation pump

Claims (6)

An outdoor air heat exchanger that exchanges heat between the refrigerant and outdoor air, a hot water supply heat exchanger that exchanges heat between the refrigerant and water, and at least the outdoor air heat exchanger and the hot water supply heat An outdoor unit having an outdoor unit housing for accommodating the exchanger;
A hot water supply unit having at least a hot water storage tank for storing water heated in the hot water supply water heat exchanger of the outdoor unit;
A water pipe connected to the outdoor unit and the hot water supply unit, and for circulating water between the hot water supply water heat exchanger and the hot water storage tank;
A heat pump type water heater comprising:
On the back surface or side surface of the outdoor unit housing, a recessed portion that is recessed toward the inside of the outdoor unit is provided,
A heat pump type hot water heater, wherein a connection portion between the outdoor unit and the water pipe is provided in the depressed portion. The heat pump type hot water heater according to claim 1, wherein the depressed portion is provided at a lower end of a corner portion formed on a back surface and a side surface of the outdoor unit casing. The heat pump type hot water heater according to any one of claims 1 and 2, wherein a water drain plug for draining water from the water pipe is provided in the depressed portion of the outdoor unit. The heat pump type hot water heater according to any one of claims 1 to 3, wherein the depressed portion is provided with an opening communicating with the interior of the outdoor unit. The heat pump type hot water heater according to any one of claims 1 to 4, wherein a wiring insertion port for inserting a wiring into the outdoor unit from the outside is provided in the depressed portion. The outdoor unit is provided with a drain pan for draining water from a predetermined outlet.
The heat pump type water heater according to any one of claims 1 to 5, wherein a drainage means for guiding water in the depressed portion to the drain pan is provided in the depressed portion.