JP2015045424A - Heat pump hot water supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat pump hot water supply device with a structure capable of reducing entry of rain water into a hot water supplying and heating chamber from a blowing chamber.SOLUTION: In a heat pump hot water supply device 1, inside of an exterior case 35 is blocked into a blowing chamber 51 in which a blowing fan 27 and an evaporation heat exchanger 24 are arranged, a machine chamber 52 in which a compressor 21 and an expansion valve 23 are arranged, and a hot water supplying and heating chamber 53 that is formed across and above the blowing chamber 51 and the machine chamber 52 and in which a condensation heat exchanger 22 is arranged, by plural partition plates 47. The plural partition plates 47 comprise a lateral partition plate 49 for blocking the hot water supplying and heating chamber 53 at an upper end portion in the exterior case 35. The lateral plate 49 has a cut-out piece 55a cut and raised upward above the blowing chamber 51, and an opening 55 formed by cutting and raising the cut-out piece 55a. The opening 55 is provided at a position displaced from a rotation region F of the blowing fan 27 in a forward and backward direction in a plane view.

Description

  The present invention relates to a heat pump hot-water supply device, and more particularly to a heat pump hot-water supply device in which an interior of an exterior case is partitioned into a blower chamber, a machine chamber, and a hot-water supply heating chamber by a plurality of partition plates.

  2. Description of the Related Art Conventionally, heat exchange type heat pump water heaters using a refrigerant have been widely used. This type of heat pump water heater includes a heat pump heat source device that heats hot water with a refrigerant, a hot water storage tank that stores heated hot water, a heating circulation circuit that circulates hot water between the heat pump heat source device and the hot water storage tank, and the like. The hot water in the hot water storage tank is circulated through a heating circuit and heated by a heat pump heat source device, and the heated hot water is returned and stored in the hot water storage tank. Hot water is to be supplied.

  The above heat pump heat source machine is configured by connecting a compressor, a condensing heat exchanger, an expansion valve, and an evaporating heat exchanger through a refrigerant pipe to form a heat pump circuit, and uses the refrigerant enclosed in the refrigerant pipe. Hot water storage operation is performed. In this hot water storage operation, the compressor and the blower fan for the evaporative heat exchanger are respectively driven, and heat is exchanged between the refrigerant flowing through the heat pump circuit and the hot water flowing through the heating circulation circuit by the condensation heat exchanger, so that the hot water is Heated.

  By the way, regarding the arrangement structure of the compressor, the condensation heat exchanger, the expansion valve, and the evaporating heat exchanger in the outer case, there is an arrangement structure such as the heat pump hot water supply device of Patent Document 1, for example. That is, in the heat pump water heater of Patent Document 1, the interior of the outer case is a machine room in which a blower fan and an evaporation heat exchanger are arranged by a plurality of partition plates, and a compressor and an expansion means are arranged. And a hot water supply heating chamber that is formed so as to straddle the blower chamber and the machine chamber and in which a condensation heat exchanger is disposed.

  The plurality of partition plates include a vertical vertical partition plate for partitioning the blower chamber and the machine room, and a horizontal upper partition plate for partitioning the hot water supply heating chamber at the upper end side portion in the outer case. And a condensation heat exchanger is disposed on the upper surface side of the upper partition plate. Conventionally, as shown in FIG. 10, the upper partition plate 61 includes a cut and raised piece 62a cut and raised upward, and an opening 62 formed by cutting and raising the cut and raised piece 62a. And the end of the heat insulating material that covers the condensing heat exchanger is brought into contact with the cut and raised piece 62a, thereby preventing misalignment of the condensing heat exchanger.

JP 2013-130343 A

  However, as described above, when the upper partition plate is cut and raised in order to prevent misalignment of the condensation heat exchanger, the upper partition plate has an opening that communicates the air blowing chamber and the hot water supply heating chamber. Will be formed. Conventionally, this opening is provided at a position deviated in the left-right direction (direction perpendicular to the thickness direction of the blade member) from the rotation area of the blower fan in plan view (see FIG. 10). There is a problem that rainwater that has entered and rolled up by the blower fan enters the hot water supply heating chamber through the opening.

  For this reason, in the structure of the heat pump hot water supply apparatus of Patent Document 1, when rainwater enters the hot water supply heating chamber, the rainwater flows on the upper surface of the upper partition plate, and the rainwater is formed on the side opposite to the opening of the upper partition plate. There is a risk of flowing into the machine room side through the insertion hole and short-circuiting electrical components for controlling various devices installed in the machine room.

  An object of the present invention is to provide a heat pump hot water supply apparatus having a structure capable of reducing the intrusion of rainwater from the blower chamber to the hot water supply heating chamber, and a structure capable of preventing rainwater entering the hot water supply heating chamber from flowing into the machine room It is to provide a thing provided with.

  The heat pump hot water supply apparatus according to claim 1, wherein the exterior case includes an air blower chamber in which a blower fan and an evaporative heat exchanger are disposed by a plurality of partition plates, a machine room in which a compressor and an expansion means are disposed, and the air blower. In the heat pump hot water supply apparatus that is formed so as to straddle the chamber and the machine room and that is divided into a hot water heating chamber in which a condensing heat exchanger is disposed, the plurality of partition plates are upper ends in the outer case An upper partition plate for partitioning the hot water supply heating chamber is provided in a side portion, and the upper partition plate is cut and raised upwardly above the blower chamber, and the cut and raised piece And the opening is provided at a position that deviates in the front-rear direction from the rotation area of the blower fan in plan view.

  In the heat pump hot water supply apparatus according to claim 2, in the invention according to claim 1, the upper partition plate is provided with a guide portion that guides the flow of water on the upper partition plate toward the opening. It is characterized by.

  According to a third aspect of the present invention, there is provided the heat pump hot water supply apparatus according to the first or second aspect, wherein the upper partition plate is provided with a pipe insertion hole communicating with the machine room side, and between the opening and the pipe insertion hole. Is characterized in that a ridge extending in the front-rear direction that is convex upward is provided.

  According to the first aspect of the present invention, the upper partition plate has a cut-and-raised piece cut and raised upward above the air blowing chamber, and an opening formed by cutting and raising the cut-and-raised piece. However, since the opening is provided at a position deviated in the front-rear direction from the rotation area of the blower fan in a plan view, rainwater enters the blower chamber when it rains or the like, and rainwater Collides with the bottom of the upper partition plate directly above the rotation area and in the left-right direction of the rotation area, and falls toward the bottom of the blower chamber.

  Therefore, the cut and raised piece is formed by cutting and raising the cut piece while maintaining the positioning function for the condensation heat exchanger by forming the cut and raised piece at a position deviated in the front-rear direction from the rotation area of the blower fan in plan view. Intrusion of rainwater from the opened opening into the hot water supply heating chamber can be reduced.

  According to the second aspect of the present invention, the upper partition plate is provided with the guide portion for guiding the flow of water on the upper partition plate toward the opening, so that the upper partition plate and the condensation heat exchanger are provided. Rainwater does not stay between the two and can be drained to the air blowing chamber through the opening, and deterioration of the heat insulating material and the like of the condensation heat exchanger can be prevented.

  According to the invention of claim 3, the upper partition plate is provided with a pipe insertion hole communicating with the machine room side, and a protrusion extending in the front-rear direction protruding upward is formed between the opening and the pipe insertion hole. Since the strip is provided, even if rainwater enters the hot water supply heating chamber, it is possible to prevent rainwater from flowing into the pipe insertion hole by the protrusion and prevent rainwater from entering the machine room. it can.

It is a schematic block diagram of the heat pump hot-water supply apparatus which concerns on the Example of this invention. It is a perspective view of a heat pump type heat source machine. It is a perspective view of the heat pump type heat source machine in the state where the front side plate and the top plate of the outer case are removed. It is a top view of a horizontal partition plate. It is sectional drawing of a horizontal partition plate. It is a partial expansion perspective view of a horizontal partition plate. It is a partial expansion perspective view of the horizontal partition which concerns on the modified form of a 1st example. It is a top view of the horizontal partition which concerns on the modification of a 2nd example. It is sectional drawing of the horizontal partition plate which concerns on the modification of a 2nd example. It is a partial expansion perspective view of the horizontal partition which concerns on a prior art example.

  Hereinafter, modes for carrying out the present invention will be described based on examples.

First, the whole structure of the heat pump hot-water supply apparatus 1 of this invention is demonstrated.
As shown in FIG. 1, a heat pump hot water supply apparatus 1 includes a hot water storage tank unit 2 having a hot water storage tank 5 for storing hot water, a heat pump unit 3 for heating hot water in the hot water storage tank 5, and a control unit for controlling the heat pump hot water supply apparatus 1. 4. It consists of circulation pipes 8a and 8b for circulating hot water between the hot water storage tank unit 2 and the heat pump unit 3.

  As shown in FIG. 1, a hot water storage tank unit 2 includes a hot water storage tank 5 having a vertically long cylindrical outer peripheral surface, various pipes 6, 7, 8 a, 8 b, a hot water circulation pump 11, an on-off valve 12, a mixing valve 13, A control unit 16, an outer case 17, and the like are provided. The hot water storage tank 5 stores high-temperature hot water (for example, 65 to 90 ° C.) heated by the heat pump unit 3.

  A water supply pipe 6 and a circulation pipe 8 a are connected to the lower end of the hot water storage tank 5. The water supply pipe 6 is provided with an on-off valve 12 for supplying low temperature clean water to the hot water storage tank 5. A circulation pipe 8b and a hot water discharge pipe 7 are connected to the upper end of the hot water storage tank 5, and hot hot water returned from the circulation pipe 8b is stored in the hot water storage tank 5. When hot water is supplied, the high temperature in the hot water storage tank 5 is stored. Hot water can be supplied to the hot water supply pipe 7.

  In the hot water storage tank 5, a plurality of temperature sensors 5 a to 5 d are arranged at predetermined intervals in the height direction, and temperature detection signals from the temperature sensors 5 a to 5 d are supplied to the main control unit 16. The outer case 17 is formed in a thin steel plate box shape, and includes a hot water storage tank 5, various pipes 6 and 7, most of the circulation pipes 8a and 8b, a hot water circulation pump 11, an on-off valve 12, a mixing valve 13, Various temperature sensors 15a to 15d, a main control unit 16 and the like are accommodated.

Next, the heat pump unit 3 will be described.
As shown in FIG. 1, the heat pump unit 3 includes a heat pump heat source unit 20 for heating hot water with a refrigerant, an auxiliary control unit 33 connected to the main control unit 16 and controlling the heat pump type heat source unit 20, these Are provided with an outer case 35 and the like.

  The heat pump heat source machine 20 has a compressor 21, a condensing heat exchanger 22 for heating hot water, an expansion valve 23 for rapidly expanding a high-pressure refrigerant to lower the temperature and pressure, and an evaporation heat exchanger 24 for absorbing outside air heat. These devices 21 to 24 are connected via the refrigerant pipe 25 to constitute a heat pump circuit, and a hot water storage operation is performed using the refrigerant sealed in the refrigerant pipe 25. The heat pump heat source machine 20 further includes a blower fan 27 for an evaporation heat exchanger driven by a blower motor 27a.

Here, first, the structure of the exterior case 35 will be described.
As shown in FIGS. 2 and 3, the exterior case 35 is formed in a box shape made of a thin steel plate, and includes a pair of left and right side plates 41, 42, a front side plate 43, a rear side plate 44, a top plate 45, And a bottom plate 46. The interior of the outer case 35 is divided into a blower chamber 51, a machine chamber 52, and a hot water supply / heating chamber 53 by a plurality of partition plates 47. The plurality of partition plates 47 include a vertical vertical partition plate 48 and a horizontal horizontal partition plate 49, each of which is made of a thin steel plate.

  The pair of left and right side plates 41, 42 are installed symmetrically. The right side plate 42 is attached with a pipe cover 42a having a shape in which the lower side bulges, and this pipe cover 42a covers a pipe connection portion that connects the internal pipe portion and the external pipe portion of the circulation pipes 8a and 8b. .

  An opening 43a as an air discharge port is formed in the front side plate 43, and a wire mesh cover member 43b is provided on the front surface of the opening 43a. On the inner surface side of the front side plate 43, a bell mouth 43c for guiding the air flow is provided. When the blower fan 27 is driven, outside air is taken in from the outside air intake openings formed in the left side plate 41 and the rear side plate 44, respectively, and heat is exchanged with the refrigerant in the evaporating heat exchanger 24 to become low-temperature air. It is discharged outside through the opening 43a.

  The vertical partition plate 48 stands vertically from about 1/3 of the right side of the bottom plate 46 and is provided substantially parallel to the pair of left and right side plates 41, 42. The vertical partition plate 48 includes a left blower chamber 51 in which the evaporative heat exchanger 24 and the blower fan 27 are disposed in the outer case 35, and a right machine chamber 52 in which the compressor 21 and the expansion valve 23 are disposed. It is divided into. An auxiliary control unit 33 is mounted on the upper end side portion of the vertical partition plate 48.

  A horizontal partition plate 49 (corresponding to an upper partition plate) is provided on the upper side of the vertical partition plate 48 so as to extend in the left-right direction in parallel with the top plate 45, and its left and right ends are a pair of left and right side plates 41, 42. It is fixed to the inner surface. The horizontal partition plate 49 defines a hot water supply / heating chamber 53 in which the condensation heat exchanger 22 is disposed at the upper end side portion in the outer case 35. The hot water supply heating chamber 53 is formed so as to straddle the air blowing chamber 51 and the machine chamber 52. The detailed structure of the horizontal partition plate 49 will be described later.

Next, various devices housed in the outer case 35 will be described.
As shown in FIG. 1, the compressor 21 is a known hermetic compressor that adiabatically compresses a refrigerant in a gas phase to raise the temperature.

  The condensing heat exchanger 22 is configured by a double pipe having a heat exchanger passage portion 22 a installed between the circulation pipes 8 a and 8 b and an internal passage 22 b that is a part of the refrigerant pipe 25. In the condensation heat exchanger 22, heat is exchanged between the refrigerant flowing in the internal passage 22b and hot water supplied from the circulation pipe 8a to the heat exchanger passage portion 22a, and the hot water is heated and the refrigerant is cooled and liquefied. The condensation heat exchanger 22 is disposed on the upper surface side of the horizontal partition plate 49. The condensation heat exchanger 22 is covered with a heat insulating material 32 obtained by foaming a resin such as foamed polypropylene or foamed polystyrene.

  The expansion valve 23 (corresponding to the expansion means) adiabatically expands the liquid phase refrigerant and lowers the temperature. The expansion valve 23 is a control valve having a variable throttle amount. An expansion valve with a constant throttle amount may be used instead of the expansion valve 23 with a variable throttle amount.

  The evaporative heat exchanger 24 has an evaporator passage portion 24a included in the refrigerant pipe 25, and the evaporator passage portion 24a has a heat transfer tube and a plurality of fins. In the evaporative heat exchanger 24, heat is exchanged between the refrigerant flowing through the evaporator passage portion 24a and the outside air, and the refrigerant absorbs heat from the outside air and vaporizes. The evaporative heat exchanger 24 is configured in an L shape in plan view along the inner surfaces of the left side plate 41 and the rear side plate 44 (see FIG. 3).

  The refrigerant pipe 25 includes a refrigerant passage 25 a that connects the discharge side of the compressor 21 and the inlet side of the condensation heat exchanger 22, and a refrigerant passage 25 b that connects the outlet side of the condensation heat exchanger 22 and the inlet side of the expansion valve 23. , A refrigerant passage 25c that connects the outlet side of the expansion valve 23 and the inlet side of the evaporation heat exchanger 24, and a refrigerant passage 25d that connects the outlet side of the evaporation heat exchanger 24 and the introduction side of the compressor 21 are provided. .

  As shown in FIGS. 1 and 3, the blower fan 27 has a blower motor 27a and a plurality of blade members 27b that are rotationally driven by the blower motor 27a. It is supported by the partition plate 49.

  During the hot water storage operation of the heat pump heat source device 20, the heated refrigerant compressed to a high pressure by the compressor 21 is sent to the condensation heat exchanger 22 and circulated from the lower end of the hot water storage tank 5 by driving the hot water circulation pump 11. Heat is exchanged with the water flowing into the heat exchanger passage 22a through the piping 8a for heating and warming the water, and the liquefied refrigerant is cooled to the expansion valve 23. The heated hot water passes through the circulation piping 8b. The hot water is stored in the hot water storage tank 5 of the hot water storage tank unit 2, and high temperature hot water is stored in the hot water storage tank 5 by repeating the heating operation via the heat pump heat source unit 20.

Next, the control unit 4 will be described.
As shown in FIG. 1, the heat pump hot water supply apparatus 1 is controlled by a control unit 4 including a main control unit 16 and an auxiliary control unit 33. Detection signals from various temperature sensors and the like are transmitted to the control unit 4, and the control unit 4 operates the hot water storage tank unit 2 and the heat pump heat source machine 20, activates / deactivates various pumps, and opens / closes various valves. Various operations (hot water storage operation, hot water supply operation, etc.) are executed by controlling switching and opening adjustment.

  The main control unit 16 can perform data communication with the operation remote controller 36 that can be operated by the user. When the target hot water temperature is set by operating the switch of the operation remote controller 36, the target hot water temperature data is transferred from the operation remote controller 36. It is transmitted to the main control unit 16. The auxiliary control unit 33 is capable of data communication with the main control unit 16, and in accordance with instructions from the main control unit 16, various devices of the heat pump heat source unit 20 (compressor 21, expansion valve 23, blower motor 27a, etc.). The drive control is performed.

Next, a specific structure of the horizontal partition plate 49 according to the present invention will be described.
As shown in FIGS. 4 to 6, the horizontal partition plate 49 (upper partition plate) is formed in a tray shape in which the four sides of a rectangular metal plate that is long in the left-right direction are bent upward to form a rising shape. . That is, flange portions 54a to 54d bent upward are formed on the left and right end portions and the front and rear end portions of the horizontal partition plate 49 over substantially the entire length.

  As shown in FIGS. 4 and 5, the horizontal partition plate 49 includes an opening 55 that connects the blower chamber 51 and the hot water supply heating chamber 53, and a cut-and-raised piece 55 a provided at an end of the opening 55. A pipe insertion hole 56 that communicates the machine room 52 and the hot water supply heating chamber 53, and a protrusion 57 provided between the opening 55 and the pipe insertion hole 56.

Next, the opening 55 will be described.
As shown in FIGS. 4 to 6, the opening 55 is formed in a rectangular shape that is long in the front-rear direction in a plan view, and is formed by cutting and raising a piece 55 a above the blower chamber 51. The cut-and-raised piece 55a is cut and raised upward, and is provided at the right end edge of the opening 55 so as to protrude upward. When the condensation heat exchanger 22 is placed on the upper surface of the horizontal partition plate 49, the cut and raised piece 55 a receives the left end portion of the heat insulating material 32 covering the condensation heat exchanger 22 and positions the condensation heat exchanger 22. can do.

  As shown in FIG. 4, the opening 55 extends in the front-rear direction (a direction parallel to the rotation axis of the blower motor 27a and a direction parallel to the thickness direction of the blade member 27b) from the rotation region F of the blower fan 27 in plan view. It is a position deviated in the left-right direction (a direction orthogonal to the rotation axis of the blower motor 27a and a direction orthogonal to the thickness direction of the blade member 27b), and is formed at the left end portion in the vicinity of the rear end of the horizontal partition plate 49. . The rotation region F defined by the rotation of the three blade members 27b of the blower fan 27 is located at the center portion in the front-rear direction of the horizontal partition plate 49 in plan view.

Next, the pipe insertion hole 56 will be described.
As shown in FIG. 4, the pipe insertion hole 56 is formed in an oval shape that is long in the left-right direction in a plan view, and is provided at the right end portion in the vicinity of the rear end of the horizontal partition plate 49. Circulation pipes 8 a and 8 b and refrigerant passages 25 a and 25 b connected to the condensation heat exchanger 22 are inserted into the pipe insertion holes 56.

Next, the protrusion 57 will be described.
As shown in FIG. 4 and FIG. 5, the protrusion 57 is provided so as to protrude upward and extend in the front-rear direction at a portion on the right side of the central portion in the left-right direction of the horizontal partition plate 49. The protrusion 57 is made of, for example, a rubber packing having a square shape in cross section, and is attached to the upper surface of the horizontal partition plate 49 with a double-sided tape or the like.

  The protrusion 57 is set to a height of, for example, about 10 mm, but need not be limited to this height. Further, the protrusion 57 does not need to be limited to the rubber packing, and is not particularly limited as long as it has a shape extending in the front-rear direction that protrudes upward. When the horizontal partition plate 49 is pressed, A protrusion (so-called beat portion) extending in the front-rear direction that protrudes upward integrally with the partition plate 49 may be formed.

Next, the guidance unit 58 will be described.
As shown in FIG. 5, the horizontal partition plate 49 is provided with a guide portion 58 that guides the flow of water on the horizontal partition plate 49 toward the opening 55. That is, the horizontal partition plate 49 is fixed to the pair of left and right side plates 41 and 42 so as to be inclined to the left so as to be inclined slightly with respect to the horizontal plane. The inclination angle α of the horizontal partition plate 49 with respect to the horizontal plane is set to, for example, about 1 to 3 °, but is not particularly limited to this angle. The inclined arrangement of the horizontal partition plate 49 corresponds to the guide portion 58.

  The heat insulating material 32 includes a plurality of legs 32a in order to maintain the condensing heat exchanger 22 accommodated therein in a horizontal state. An air layer is formed between the heat insulating material 32 and the horizontal partition plate 49 by the plurality of leg portions 32a.

Next, the effect | action and effect of the heat pump hot-water supply apparatus 1 of this invention are demonstrated.
In the heat pump heat source apparatus 20, rainy water enters the blower chamber 51 through the opening 43 a of the front side plate 43 and the outside air intake opening of the left side plate 41 and the rear side plate 44 during rainy weather. In this state, when the heat-pump type heat source device 20 is operated or when a reverse wind blows into the air blowing chamber 51, the air blowing fan 27 rotates, but rainwater that has entered the air blowing chamber 51 is wound up with this rotation. Since the rolled rainwater is formed such that the rotation area F of the blower fan 27 and the opening 55 of the horizontal partition plate 49 are shifted in the front-rear direction, most of the rainwater enters the hot water supply heating chamber 53 from the opening 55. Instead, it collides with the bottom surface of the horizontal partition plate 49 and falls.

  Even if rainwater enters the hot water supply heating chamber 53 through the opening 55, the horizontal partition plate 49 is fixed in an inclined manner so that the water is directed toward the opening 55, and the horizontal partition plate 49, the heat insulating material 32, Since an air layer is formed between them, the rainwater that has entered is guided to the opening 55 side and drained to the blower chamber 51 side.

  As described above, the horizontal partition plate 49 is formed by cutting and raising the cut-and-raised piece 55a above the blower chamber 51 and the cut-and-raised piece 55a. The opening 55 is provided at a position deviated in the front-rear direction from the rotation region F of the blower fan 27 in a plan view, so that rainwater enters the blower chamber 51 when it rains and the rainwater is blown by the blower fan. Even if it is rolled up by 27, the rainwater collides with the bottom surface of the horizontal partition plate 49 immediately above the rotation region F and above the rotation region F in the left-right direction, and falls toward the bottom in the blower chamber 51.

  Accordingly, the cut and raised piece 55a is formed at a position deviated in the front-rear direction from the rotation region F of the blower fan 27 in a plan view, thereby maintaining the positioning function with respect to the condensation heat exchanger 22 and the cut and raised piece 55a. Intrusion of rainwater from the opening 55 formed by cutting up into the hot water supply heating chamber 53 can be reduced.

  In addition, since the horizontal partition plate 49 is provided with a guide portion 58 that guides the flow of water on the horizontal partition plate 49 toward the opening 55, the horizontal partition plate 49, the condensation heat exchanger 22, During this time, rainwater does not stay and can be drained to the blower chamber 51 side through the opening 55, and deterioration of the heat insulating material 32 and the like of the condensation heat exchanger 22 can be prevented.

  Further, the horizontal partition plate 49 is provided with a pipe insertion hole 56 that communicates with the machine chamber 52 side. Between the opening 55 and the pipe insertion hole 56, a protrusion that extends in the front-rear direction and protrudes upward. 57 is provided, so that even if rainwater enters the hot water supply heating chamber 53, it prevents the rainwater from flowing into the pipe insertion hole 56 by the protrusion 57 and prevents the rainwater from entering the machine chamber 52. can do.

Next, an example in which the above embodiment is partially changed will be described.
(1) First Modification As shown in FIG. 7, in the horizontal partition plate 49 </ b> A, a tubular portion 56 a that is formed by burring and protrudes upward is formed at the periphery of the pipe insertion hole 56 </ b> A. The tubular portion 56 a can prevent rainwater from flowing into the pipe insertion hole 56 </ b> A and prevent rainwater from entering the blower chamber 51. In the case of this structure, the protrusion 57 by rubber packing may be omitted.

(2) Second Modification As shown in FIGS. 8 and 9, the horizontal partition plate 49 </ b> B is fixed in a horizontal posture and has a plurality of protrusions 57 </ b> B ( A so-called beat section). When the heat insulating material 32B is placed on the horizontal partition plate 49B, an air layer is formed between the heat insulating material 32B and the horizontal partition plate 49B by the plurality of protrusions 57B. Can be improved.

(3) Third Modification In the above-described embodiment, the horizontal partition plate 49 is arranged in an inclined manner as the guide portion 58, but it is not particularly limited to this structure, and the horizontal partition plate 49 is fixed in a horizontal posture. And the structure which provided the recessed part like the drainage channel which flows the flow of water to the opening part 55 in the horizontal partition plate 49 may be sufficient.

  In addition, those skilled in the art can implement the present invention by adding various modifications without departing from the spirit of the present invention, and the present invention includes such modifications.

DESCRIPTION OF SYMBOLS 1 Heat pump hot-water supply apparatus 21 Compressor 22 Condensing heat exchanger 23 Expansion valve (expansion means)
24 Evaporative heat exchanger 27 Blower fan 35 Exterior case 47 Partition plate 49, 49A, 49B Horizontal partition plate (upper partition plate)
51 Ventilation chamber 52 Machine chamber 53 Hot water supply heating chamber 55 Opening 55a Cut and raised pieces 56, 56A Pipe insertion holes 57, 57B Projection portion 58 Guide portion F Rotation region

Claims (3)

The interior of the outer case spans a blower chamber in which a blower fan and an evaporative heat exchanger are disposed by a plurality of partition plates, a machine chamber in which a compressor and an expansion means are disposed, and a space above the blower chamber and the machine chamber. In a heat pump hot water supply apparatus that is formed so as to be separated and partitioned into a hot water supply heating chamber in which a condensation heat exchanger is arranged,
The plurality of partition plates have an upper partition plate for partitioning the hot water heating chamber in the upper end side portion in the exterior case,
The upper partition plate has a cut-and-raised piece cut and raised upward above the blower chamber, and an opening formed by cutting and raising the cut-and-raised piece,
The heat pump hot water supply apparatus, wherein the opening is provided at a position deviated in a front-rear direction from a rotation area of the blower fan in a plan view.   The heat pump hot water supply apparatus according to claim 1, wherein the upper partition plate is provided with a guide portion that guides a flow of water on the upper partition plate toward the opening. The upper partition plate is provided with a pipe insertion hole communicating with the machine room side, and a protrusion extending in the front-rear direction that protrudes upward is provided between the opening and the pipe insertion hole. The heat pump hot-water supply apparatus according to claim 1 or 2, wherein