US20200173690A1 - Outdoor unit of heat pump water heater - Google Patents
Outdoor unit of heat pump water heater Download PDFInfo
- Publication number
- US20200173690A1 US20200173690A1 US16/304,810 US201616304810A US2020173690A1 US 20200173690 A1 US20200173690 A1 US 20200173690A1 US 201616304810 A US201616304810 A US 201616304810A US 2020173690 A1 US2020173690 A1 US 2020173690A1
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- United States
- Prior art keywords
- remote controller
- hot water
- electrical unit
- heat pump
- compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 218
- 230000017525 heat dissipation Effects 0.000 claims abstract description 25
- 238000009423 ventilation Methods 0.000 claims abstract description 7
- 230000000717 retained effect Effects 0.000 claims description 9
- 239000003507 refrigerant Substances 0.000 description 20
- 238000009835 boiling Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 5
- 238000005192 partition Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
- F24D19/1054—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water the system uses a heat pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/20—Electric components for separate outdoor units
- F24F1/22—Arrangement or mounting thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/20—Electric components for separate outdoor units
- F24F1/24—Cooling of electric components
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/26—Refrigerant piping
- F24F1/32—Refrigerant piping for connecting the separate outdoor units to indoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/02—Casings; Cover lids; Ornamental panels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2021—Storage heaters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Housings, Intake/Discharge, And Installation Of Fluid Heaters (AREA)
Abstract
The present invention provides an outdoor unit of a heat pump water heater that has improved heat dissipation performance of an electrical unit achieved by improving the placement of the electrical unit and a remote controller. A compressor 31 is placed on one side in an exterior case 51, while an evaporator 32 and an air blower 34 are placed lateral to the compressor. An electrical unit 70 is placed on one side in the exterior case below a top panel 56, and a remote controller 71 is placed between a side plate 55B of the exterior case and the electrical unit. A heat dissipation section 72 is provided on a portion of the electrical unit, the portion being positioned on the opposite side from the remote controller, and is positioned within a ventilation path of the air blower.
Description
- This application is a U.S. National Stage Patent Application under 37 U.S.C. § 371 of International Patent Application No. PCT/JP2017/018600, filed on May 11, 2017, which claims the benefit of Japanese Patent Application No. JP 2016-106115, filed on May 27, 2016, the disclosures of each of which are incorporated herein by reference in their entirety.
- The present invention relates to an outdoor unit of a heat pump water heater adapted to heat water for hot water supply by a heat pump circuit.
- Hitherto, as this type of heat pump water heater, there has been known one that includes a hot water storage tank which stores water for hot water supply, a hot water supply circuit in which the water for hot water supply in the hot water storage tank is taken out from a lower part of the hot water storage tank by a pump, circulated into a water heat exchanger, and led into an upper part of the hot water storage tank, and a heat pump circuit for heating, by a refrigerant, the water for hot water supply, which circulates through the water heat exchanger of the hot water supply circuit (refer to, for example, Patent Document 1). Further, as an outdoor unit of an air conditioner using a heat pump, there has been developed one that has a compressor and a heat exchanger, and a fan, which are placed in parallel in an exterior case, and an electrical unit provided above the compressor. Switches and a display section of the electrical unit are placed corresponding to a hole for a detachable handle (refer to, for example, Patent Document 2).
- The electrical unit has a power element, which generates heat. In the aforesaid conventional outdoor unit, the electrical unit is placed above the compressor, thus making it difficult to air-cool the electrical unit by ventilation using an air blower. In addition, the switches and the display section device are provided at a lower part of the electrical unit, so that the switches and the display section device have to be operated through the hole for the handle, resulting in extremely poor operability.
- The present invention has been made to solve the technological difficulties of the conventional art described above, and an object of the invention is to provide an outdoor unit of a heat pump water heater featuring improved heat dissipation performance of an electrical unit achieved by improving the placement of the electrical unit, which has a heat dissipation section, and a remote controller having a display section, and also featuring improved visibility and operability of the remote controller.
- An outdoor unit of a heat pump water heater in accordance with the present invention has a compressor and an evaporator constituting a heat pump circuit, and an air blower for ventilating the evaporator, which are provided in an exterior case that has side plates and a detachable top panel, the outdoor unit including: an electrical unit, which has a heat dissipation section and which controls the compressor and the air blower; and an operation remote controller, which has a display section and which is connected to the electrical unit, wherein the compressor is placed on one side in the exterior case, the evaporator and the air blower are placed lateral to the compressor, the electrical unit is placed on one side in the exterior case under the top panel, the remote controller is placed between a side plate of the exterior case, the side plate being adjacent to the compressor, and the electrical unit, and the heat dissipation section is provided on a portion of the electrical unit, the portion being on the opposite side from the remote controller, and is positioned within a ventilation path of the air blower.
- The outdoor unit of the heat pump water heater according to the present invention of claim 2 includes a retaining section which retains the remote controller between the electrical unit and the side plate, and the remote controller can be taken out of the retaining section in a state in which the top panel has been removed in the aforesaid invention. In the outdoor unit of the heat pump water heater according to the invention of claim 3, the remote controller is retained by the retaining section in a state in which the remote controller is locked to a locking member, and the top panel is in contact with the locking member through the intermediary of a buffer in a state in which the remote controller and the locking member are retained by the retaining section in the aforesaid invention.
- In the outdoor unit of the heat pump water heater according to the invention of claim 4, a window hole is formed in the side plate at a position corresponding to the display section of the remote controller in each of the aforesaid inventions.
- In the outdoor unit of the heat pump water heater according to the invention of claim 5, a pull-out port is formed in the top panel at a position corresponding to the remote controller, the remote controller can be taken out from the pull-out port, and the pull-out port is openably closed by a cover member in each of the aforesaid inventions.
- According to the present invention, the outdoor unit of a heat pump water heater has the compressor and the evaporator constituting the heat pump circuit, and the air blower for ventilating the evaporator, which are provided in the exterior case that has the side plates and the detachable top panel. The outdoor unit includes: the electrical unit, which has a heat dissipation section and which controls the compressor and the air blower; and the operation remote controller, which has the display section and which is connected to the electrical unit, wherein the compressor is placed on one side in the exterior case, the evaporator and the air blower are placed lateral to the compressor, the electrical unit is placed on one side in the exterior case under the top panel, the remote controller is placed between the side plate of the exterior case, the side plate being adjacent to the compressor, and the electrical unit, and the heat dissipation section is provided on the portion of the electrical unit, the portion being on the opposite side from the remote controller, and is positioned within a ventilation path of the air blower. Thus, the electrical unit is spaced from the side plate adjacent to the compressor because of the presence of the remote controller, and the heat dissipation section thereof is closer to the air blower.
- With this arrangement, the wind from the air blower is blown more strongly to the heat dissipation section of the electrical unit, thus making it possible to markedly improve the heat dissipation performance of the electrical unit. Further, the remote controller can be operated by removing the detachable top panel of the exterior case, thus leading to improved operability for initial setting and maintenance.
- In this case, according to the invention described in claim 2, the retaining section that retains the remote controller is provided between the electrical unit and the side plate, and the remote controller can be taken out of the retaining section in the state in which the top panel has been removed, thus leading to significantly improved operability.
- Further, according to the invention described in claim 3, the remote controller is retained by the retaining section in the state in which the remote controller is locked to the locking member, and the top panel is in contact with the locking member through the intermediary of the buffer in the state in which the remote controller and the locking member are retained by the retaining section. Hence, the top panel serves also as the member for fixing the remote controller, thus making it possible to prevent the inconvenient vertical vibration of the remote controller and the locking member caused by the vibration during transport without the need for providing any extra members. This enables the number of components to be reduced.
- Further, according to the invention described in claim 4, the window hole formed in the side plate at the position corresponding to the display section of the remote controller enables the display section of the remote controller to be visually checked without removing the top panel, leading to significantly improved maintainability. In this case, the window hole is formed in the side plate of the exterior case. This makes it difficult for rain water to accumulate, thus providing the advantage of much greater waterproofing, as compared with the case where the window hole is formed in the top panel.
- In addition, according to the invention described in claim 5, the pull-out port is formed in the top panel at the position corresponding to the remote controller such that the remote controller can be taken out of the pull-out port, and the pull-out port is openably closed by the cover member. This arrangement makes it possible to operate the remote controller without detaching the top panel, leading to further improved operability for setting and maintenance.
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FIG. 1 is a configuration diagram of a heat pump water heater as an embodiment to which the present invention has been applied; -
FIG. 2 is a schematic sectional view illustrating the internal configuration of an outdoor unit of the heat pump water heater ofFIG. 1 (First Embodiment); -
FIG. 3 is a side view of the outdoor unit ofFIG. 2 ; -
FIG. 4 is a front view of a remote controller of the heat pump water heater ofFIG. 1 ; -
FIG. 5 is a side view of the remote controller ofFIG. 4 and locking members; -
FIG. 6 is a perspective view of the remote controller and the locking members ofFIG. 5 and a retaining section; and -
FIG. 7 is a schematic sectional view illustrating the internal configuration of an outdoor unit of a heat pump water heater of another embodiment according to the present invention (Second Embodiment). - The following will describe in detail the embodiments of the present invention with reference to the accompanying drawings.
- (1) Heat
Pump Water Heater 1 - A heat
pump water heater 1 according to the present embodiment includes a hotwater storage tank 10, which stores water for hot water supply, a hotwater supply circuit 20, which circulates the water for hot water supply of the hotwater storage tank 10, aheat pump circuit 30, which circulates a refrigerant, and awater heat exchanger 40, which performs heat exchange between the water for hot water supply of the hotwater supply circuit 20 and the refrigerant of theheat pump circuit 30. The heatpump water heater 1 is adapted to heat the water for hot water supply circulating through the hotwater supply circuit 20 by the refrigerant of theheat pump circuit 30. - (2) Hot
Water Storage Tank 10 - The hot
water storage tank 10 is formed of a vertically long, hermetically sealed vessel, and installed outdoors or the like. Awater supply pipe 11 for introducing tap water is connected to a lower part of the hotwater storage tank 10. Further, thewater supply pipe 11 is provided with apressure reducing valve 12. A hotwater supply pipe 13 for supplying the hot water in the hotwater storage tank 10 to a hot water supply destination in a residence is connected to an upper part of the hotwater storage tank 10, the hotwater supply pipe 13 and thewater supply pipe 11 being connected through abypass pipe 14. - A
mixing valve 15 is provided between the hotwater supply pipe 13 and thebypass pipe 14. Themixing valve 15 is adapted to mix the hot water in the hotwater storage tank 10 and the water from thewater supply pipe 11 and to circulate the mixture into the hotwater supply pipe 13. Further, the hotwater storage tank 10 is provided with a stored hotwater temperature sensor 16, which detects the temperature of the water for hot water supply in the hotwater storage tank 10. The stored hotwater temperature sensor 16 is installed at a predetermined location in the vertical direction of the hot water storage tank 10 (approximately at the center in the embodiment). - (3) Hot Water Supply Circuit 20
- The hot
water supply circuit 20 includes aninflow pipe 21 connected between a lower part of the hotwater storage tank 10 and an inflow-side connection port 52 formed in the outer surface of anexterior case 51 of anoutdoor unit 50, which will be discussed later, awater pump 23, aninflow water pipe 22 connected between the inlet side of thewater pump 23 and the connection port 52, anoutflow water pipe 24 connected between a discharge side of thewater pump 23 and the inflow side of thewater heat exchanger 40, anoutlet pipe 26 connected between the outflow side of thewater heat exchanger 40 and an outflow-side connection port 54 installed to the outer surface of theexterior case 51, and anoutflow pipe 27 connected to theconnection port 54 and an upper part of the hotwater storage tank 10. Theinflow water pipe 22 is provided with an inflowwater temperature sensor 28, which detects the temperature of the water for hot water supply, and theoutlet pipe 26 is provided with an outflow hotwater temperature sensor 29, which detects the temperature of the water for hot water supply. - The hot
water supply circuit 20 is provided with adrain plug 18 for draining the water inside. Thedrain plug 18 is also provided on the outer surface of theexterior case 51 of theoutdoor unit 50 and connected in communication with theinflow water pipe 22 through adrain pipe 19.Reference numerals connection ports 52 and 54, respectively. Reference numeral 25 denotes a filter provided in theinflow water pipe 22. - (4)
Heat Pump Circuit 30 - The
heat pump circuit 30 is composed of a refrigerant circuit formed by connecting acompressor 31, anevaporator 32, an expansion valve (pressure reducing unit) 33, and thewater heat exchanger 40, and is configured such that a refrigerant is circulated in the order of thecompressor 31, thewater heat exchanger 40, theexpansion valve 33, theevaporator 32, and thecompressor 31. The refrigerant used for theheat pump circuit 30 is a natural refrigerant, such as CO2 (carbon dioxide). Further,reference numeral 34 denotes an air blower for ventilating theevaporator 32. - The
water heat exchanger 40 is composed of a double-pipe heat exchanger, which has arefrigerant circulation passage 41 and awater circulation passage 42. Theheat pump circuit 30 is connected to therefrigerant circulation passage 41, and theoutflow water pipe 24 and theoutlet pipe 26 of the hotwater supply circuit 20 are connected to thewater circulation passage 42. - The heat
pump water heater 1 according to the embodiment includes theoutdoor unit 50, in which thewater pump 23, theheat pump circuit 30, thewater heat exchanger 40, the inflowwater temperature sensor 28, the outflow hotwater temperature sensor 29 and the like are placed, and atank unit 60, in which the hotwater storage tank 10 and the stored hotwater temperature sensor 16 are placed. Theoutdoor unit 50 and thetank unit 60 are connected at theconnection ports 52 and 54 installed to theexterior case 51 of theoutdoor unit 50 through theinflow pipe 21 and theoutflow pipe 27 of the hotwater supply circuit 20. Further, theoutdoor unit 50 is installed outdoors or the like and adjacently to the hotwater storage tank 10. - (5)
Electrical Unit 70 - Further, the heat
pump water heater 1 is provided with theelectrical unit 70, to which the stored hotwater temperature sensor 16, the inflowwater temperature sensor 28, the outflow hotwater temperature sensor 29, thecompressor 31, theair blower 34, and thewater pump 23 are connected. Theelectrical unit 70 is placed in theexterior case 51 of theoutdoor unit 50. - The
electrical unit 70 includes a CPU, which stores programs, and a power element (heat generating element), and theelectrical unit 70 according to the embodiment is configured to control thecompressor 31, thewater pump 23, and theair blower 34 on the basis of the temperatures detected by the stored hotwater temperature sensor 16 and the inflowwater temperature sensor 28. Further, theelectrical unit 70 has a timer function. Connected to theelectrical unit 70 is a remote controller (operation panel) 71 for performing operations, including the setting of the timer function, and display section for displaying errors and the like, theremote controller 71 being placed also in theexterior case 51. - When the
water pump 23 of the hotwater supply circuit 20 is actuated by theelectrical unit 70, the water for hot water supply in the hotwater storage tank 10 is led out from the lower part of the hotwater storage tank 10 and flows in theinflow pipe 21 toward theoutdoor unit 50. The water for hot water supply moves up in theinflow pipe 21 and enters into theoutdoor unit 50 through the connection port 52 and further passes through thewater circulation passage 42 of thewater heat exchanger 40 through the intermediary of theinflow water pipe 22, thewater pump 23, and theoutflow water pipe 24. Thereafter, the water for hot water supply passes through theoutlet pipe 26 and reaches theoutflow pipe 27 through theconnection port 54. The water for hot water supply that has entered into theoutflow pipe 27 will flow through theoutflow pipe 27 and then flow into the upper part in the hotwater storage tank 10. - Further, when the
compressor 31 of theheat pump circuit 30 is actuated by theelectrical unit 70, a hot refrigerant (carbon dioxide) discharged from thecompressor 31 is circulated through therefrigerant circulation passage 41 of thewater heat exchanger 40, and the heat exchange is carried out between the hot refrigerant in therefrigerant circulation passage 41 and the water for hot water supply in thewater circulation passage 42. Thus, the water for hot water supply of the hotwater supply circuit 20 is heated by thewater heat exchanger 40. The temperature of the hot refrigerant is decreased by heating the water for hot water supply by thewater heat exchanger 40. The refrigerant further passes through theexpansion valve 33 so as to expand into a low temperature, low pressure state, thus turning into a gas-liquid two-phase refrigerant. The gas-liquid two-phase refrigerant flows into theevaporator 32 and evaporates. Theevaporator 32 is ventilated with outdoor air by theair blower 34, so that the refrigerant draws up heat from the outdoor air by the endothermic action of evaporation. Then, the refrigerant that has absorbed heat in theevaporator 32 repeats the cycle of being drawn into thecompressor 31. - Further, when hot water is used at the hot water supply destination, the water for hot water supply at the upper part of the hot
water storage tank 10 flows out into the hotwater supply pipe 13 and the amount of water that is equal to the amount of the water for hot water supply that has flowed out is supplied to the lower part of the hotwater storage tank 10 through thewater supply pipe 11. In other words, the use of the hot water causes the high-temperature water for hot water supply in the hotwater storage tank 10 to decrease, while the low-temperature water for hot water supply increases at the lower part of the hotwater storage tank 10, so that the temperature detected by the stored hotwater temperature sensor 16 will gradually decrease. - If the temperature detected by the stored hot
water temperature sensor 16 decreases to a predetermined stored hot water temperature or lower, then theelectrical unit 70 actuates thecompressor 31, theair blower 34, and thewater pump 23 to start a boiling operation. Thereafter, when the temperature detected by the inflowwater temperature sensor 28 reaches a predetermined inflow water temperature or higher, the boiling operation is terminated. Further, even if the temperature detected by the stored hotwater temperature sensor 16 does not decrease to a predetermined stored hot water temperature or lower, theelectrical unit 70 actuates thecompressor 31, theair blower 34, and thewater pump 23 to start the boiling operation when the time measured by the timer function from the end of the previous boiling operation reaches a predetermined time. Thereafter, the boiling operation is terminated when the temperature detected by the inflowwater temperature sensor 28 reaches the predetermined inflow water temperature or higher. - The
electrical unit 70 carries out the boiling operation for storing water for hot water supply of a predetermined temperature in the hotwater storage tank 10 as described above. The stored hotwater temperature sensor 16, which detects the temperature of the water for hot water supply in the hotwater storage tank 10, is provided at a predetermined vertical location of the hotwater storage tank 10, and the stored hotwater temperature sensor 16 is connected to theelectrical unit 70, so that theelectrical unit 70 carries out the boiling operation on the basis of the temperature detected by the stored hotwater temperature sensor 16. This eliminates the need for providing the hotwater storage tank 10 with an electrical unit. Thus, a general-purpose product can be used as the hotwater storage tank 10, contributing to improved versatility. - (6) Internal Configuration of the
Outdoor Unit 50 - Referring now to
FIG. 2 toFIG. 6 , the internal configuration of theoutdoor unit 50 will be described. Theexterior case 51 of theoutdoor unit 50 is composed of amain body 55 having left andright side plates top panel 56 detachably attached to the upper surface of themain body 55 byscrews 63. The interior of themain body 55 is divided into left and right compartments by apartition wall 57. As viewed facing thepartition wall 57, afirst machine compartment 58 is located on the right side (one side) and asecond machine compartment 59 is located on the left side (the other side). - The
compressor 31 of theheat pump circuit 30 is installed in thefirst machine compartment 58, and thewater heat exchanger 40 is installed on the bottom in thesecond machine compartment 59. Theevaporator 32 of theheat pump circuit 30 is placed on the back side in thesecond machine compartment 59, and theair blower 34 is placed in front of theevaporator 32 in the secondmachine compai linent 59. In other words, thecompressor 31 is positioned on one side in theexterior case 51, and theevaporator 32 and theair blower 34 are placed lateral to the compressor 31 (on the left, viewed from the front). - A
shroud 61 is provided around theair blower 34. Theshroud 61 has a circular cylindrical shape, enclosing theair blower 34. Further, thewater pump 23 is installed at a corner in thesecond machine compartment 59 formed by theshroud 61, thepartition wall 57, and thewater heat exchanger 40, and the exterior of thewater pump 23 is covered by apump cover 62. As described above, thewater pump 23 is placed at the corner in thesecond machine compartment 59 of theexterior case 51, which is formed by theshroud 61, thus enabling thewater pump 23 to be installed in theexterior case 51 of theoutdoor unit 50 by making use of the wasted space in thesecond machine compartment 59, which is formed by theshroud 61 of theair blower 34. This enables theoutdoor unit 50 to be made smaller. - Further, the
drain plug 18 is provided at the lowermost part of theside plate 55B on one side of themain body 55 of theexterior case 51. The position is lower than thewater pump 23 installed above thewater heat exchanger 40. Thus, thedrain plug 18 is placed at the position that is lower than thewater pump 23, so that releasing thedrain plug 18 causes the water of thewater pump 23, which is located above thedrain plug 18, to come out. In other words, when the drainage is performed through theinflow water pipe 22 of the hotwater supply circuit 20, the water of thewater pump 23 can be also drained easily by thedrain plug 18, thus enhancing the convenience. - (7) Configurations and Placement of the
Electrical Unit 70 and theRemote Controller 71 - The
electrical unit 70 described above is placed on one side in theexterior case 51 under thetop panel 56. In this case, the upper end of thepartition wall 57 is spaced from thetop panel 56. Further, theelectrical unit 70 is placed above thepartition wall 57 with an interval provided therebetween, extends from thefirst machine compartment 58 to thesecond machine compartment 59, and is also spaced from theside plate 55B on one side. Further, theremote controller 71, which is described above, is placed between theside plate 55B and theelectrical unit 70. - Further, the
electrical unit 70 is provided with a heat dissipation section 72 (a heat sink composed mainly of aluminum fins), which is installed on the power element for heat exchange. Theheat dissipation section 72 is installed to theelectrical unit 70 at a portion positioned on the opposite side from theremote controller 71, and is positioned more closely to the center of theair blower 34 by the distance of spacing of theelectrical unit 70 from theside plate 55B to place theremote controller 71. - Here, when the
air blower 34 is operated as described above, outdoor air is blown onto theevaporator 32. Theheat dissipation section 72 is positioned in the ventilation path of theair blower 34. Hence, as theheat dissipation section 72 is closer to theair blower 34, more wind sent from theair blower 34 passes through theheat dissipation section 72, thus achieving satisfactory heat dissipation from the electric components (a CPU and a power element) of theelectrical unit 70. - Meanwhile, the
remote controller 71 has adisplay section 73 for displaying errors and the like and switches 74 for performing setting operations and the like, as illustrated inFIG. 4 , and is connected to theelectrical unit 70 by acable 76. Theremote controller 71 has locking hooks 77 on the back surface thereof, and theremote controller 71 is locked onto a lockingmember 78 by the locking hooks 77 engaging with the lockingmember 78, as illustrated inFIG. 5 . Further, abuffer 79 composed of a cushion material is attached to the upper end of the lockingmember 78. - On the other hand, a retaining
section 81 is formed on the inner surface of theside plate 55B of theexterior case 51. The retainingsection 81 is shaped like a slot that opens to theside plate 55B and also upward, and theremote controller 71 locked to the lockingmember 78 is held in the retainingsection 81 such that theremote controller 71 can be taken out upward. In this case, theremote controller 71 is retained, with thedisplay section 73 being adjacent to theside plate 55B. Further, a see-throughwindow hole 82 is formed in theside plate 55B at the position corresponding to thedisplay section 73, thus making it possible to check from outside an error or the like shown on thedisplay section 73 of theremote controller 71 through thewindow hole 82. A transparent plate is fitted in thewindow hole 82 to provide sealing so as to prevent rain water or the like from entering into thewindow hole 82. - To operate the
remote controller 71, thetop panel 56 is removed, and theremote controller 71 is pulled out together with the lockingmember 78 upward from the retainingsection 81. Thecable 76 is sufficiently long to allow the pull-out operation. After operating theremote controller 71, theremote controller 71 is inserted back into the retainingsection 81 to be retained, and thetop panel 56 is attached to themain body 55. At this time, thetop panel 56 is in contact with the lockingmember 78 through the intermediary of thebuffer 79, thus preventing theremote controller 71 and the lockingmember 78 from moving. - As described above in detail, in the
outdoor unit 50, in which thecompressor 31 is placed on one side in theexterior case 51, and theevaporator 32 and theair blower 34 are placed lateral to thecompressor 31, theelectrical unit 70 is placed on one side in theexterior case 51 under the detachabletop panel 56, theremote controller 71 is placed between theside plate 55B adjacent to the compressor 31 (one side) of theexterior case 51 and theelectrical unit 70, and theheat dissipation section 72 is provided on the portion of theelectrical unit 70, the portion being positioned on the opposite side from theremote controller 71, so that theheat dissipation section 72 is positioned in the ventilation path of theair blower 34. Hence, the presence of theremote controller 71 causes theelectrical unit 70 to be spaced from theside plate 55B adjacent to thecompressor 31, so that theheat dissipation section 72 is closer to theair blower 34. - Thus, the wind from the
air blower 34 is blown more strongly onto theheat dissipation section 72 of theelectrical unit 70, enabling significantly improved heat dissipation performance of theelectrical unit 70. In addition, theremote controller 71 can be operated by removing the detachabletop panel 56 of theexterior case 51, thus leading to improved operability for initial setting and maintenance. - In this case, the retaining
section 81, which retains theremote controller 71, is provided between theelectrical unit 70 and theside plate 55B, and theremote controller 71 can be taken out of the retainingsection 81, with thetop panel 56 being removed, so that the operability is significantly improved. In addition, theremote controller 71 is retained by the retainingsection 81 in the state in which theremote controller 71 is locked to the lockingmember 78, and thetop panel 56 is in contact with the lockingmember 78 through the intermediary of thebuffer 79 in the state in which theremote controller 71 and the lockingmember 78 are held by the retainingsection 81. Hence, thetop panel 56 serves also as the member for fixing theremote controller 71, thus making it possible to prevent the inconvenient vertical vibration of theremote controller 71 and the lockingmember 78 caused by the vibration during transport without the need for providing any extra members. This enables the number of components to be reduced. - Further, the
window hole 82 is formed in theside plate 55B at the position corresponding to thedisplay section 73 of theremote controller 71, so that thedisplay section 73 of theremote controller 71 can be visually checked without removing thetop panel 56, leading to significantly improved maintainability. In this case, thewindow hole 82 is formed in theside plate 55B of theexterior case 51. This makes it difficult for rain water to accumulate, thus providing the advantage of much greater waterproofing, as compared with the case where the window hole is formed in thetop panel 56. - Next,
FIG. 7 is a diagram illustrating the internal configuration of anoutdoor unit 50 according to another embodiment. In the drawing, the components denoted by the same reference numerals as those inFIG. 2 will have the same or similar functions. In this embodiment, a pull-outport 83 is formed in one end of atop panel 56. The pull-outport 83 is located immediately above aremote controller 71 and a lockingmember 78, which are held by a retainingsection 81, and has opening dimensions that enable theremote controller 71 and the lockingmember 78 to be taken out. Further, the pull-outport 83 is openably closed by acover member 84 pivotably attached to thetop panel 56 by ahinge 86. - Further, in this case also, a
buffer 79 of the lockingmember 78 is in contact with thecover member 84. Thus, the pull-outport 83 is formed in thetop panel 56 at the position corresponding to theremote controller 71, theremote controller 71 and the lockingmember 78 can be taken out from the pull-outport 83, and the pull-outport 83 is openably closed by thecover member 84. This arrangement makes it possible to operate theremote controller 71 without detaching thetop panel 56, thus leading to further improved operability for setting and maintenance. - The above has described preferred embodiments of the present invention. However, the present invention is not limited to the foregoing embodiments, and various other changes and modifications can be made on the basis of the technical concept of the present invention.
-
-
- 1 heat pump water heater
- 10 hot water storage tank
- 16 stored hot water temperature sensor
- 20 hot water supply circuit
- 22 inflow water pipe
- 23 water pump
- 30 heat pump circuit
- 31 compressor
- 32 evaporator
- 33 expansion valve
- 34 air blower
- 40 water heat exchanger
- 50 outdoor unit
- 51 exterior case
- 55B side plate
- 56 top panel
- 70 electrical unit
- 71 remote controller
- 72 heat dissipation section
- 73 display section
- 78 locking member
- 79 buffer
- 81 retaining section
- 82 window hole
- 83 pull-out port
- 84 cover member
Claims (5)
1. An outdoor unit of a heat pump water heater having a compressor and an evaporator constituting a heat pump circuit, and an air blower for ventilating the evaporator, which are provided in an exterior case which has side plates and a detachable top panel, the outdoor unit comprising:
an electrical unit which has a heat dissipation section and which controls the compressor and the air blower; and
an operation remote controller which has a display section and which is connected to the electrical unit,
wherein the compressor is placed on one side in the exterior case, and the evaporator and the air blower are placed lateral to the compressor,
the electrical unit is placed on one side in the exterior case under the top panel,
the remote controller is placed between a side plate of the exterior case, the side plate being adjacent to the compressor, and the electrical unit, and
the heat dissipation section is provided on a portion of the electrical unit, the portion being positioned on the opposite side from the remote controller, and is positioned within a ventilation path of the air blower.
2. The outdoor unit of a heat pump water heater according to claim 1 , comprising:
a retaining section which retains the remote controller between the electrical unit and the side plate,
wherein the remote controller can be taken out of the retaining section in a state in which the top panel has been removed.
3. The outdoor unit of a heat pump water heater according to claim 2 ,
wherein the remote controller is retained by the retaining section in a state in which the remote controller is locked to a locking member, and
the top panel is in contact with the locking member through the intermediary of a buffer in a state in which the remote controller and the locking member are retained by the retaining section.
4. The outdoor unit of a heat pump water heater according to claim 1 , wherein a window hole is formed in the side plate at a position corresponding to the display section of the remote controller.
5. The outdoor unit of a heat pump water heater according to claim 1 ,
wherein a pull-out port is formed in the top panel at a position corresponding to the remote controller to enable the remote controller to be taken out from the pull-out port, and
the pull-out port is openably closed by a cover member.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016106115A JP2017211155A (en) | 2016-05-27 | 2016-05-27 | Outdoor equipment of heat pump type water heater |
JP2016-106115 | 2016-05-27 | ||
PCT/JP2017/018600 WO2017204063A1 (en) | 2016-05-27 | 2017-05-11 | Outdoor unit of heat pump water heater |
Publications (1)
Publication Number | Publication Date |
---|---|
US20200173690A1 true US20200173690A1 (en) | 2020-06-04 |
Family
ID=60412181
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/304,810 Abandoned US20200173690A1 (en) | 2016-05-27 | 2016-05-11 | Outdoor unit of heat pump water heater |
Country Status (3)
Country | Link |
---|---|
US (1) | US20200173690A1 (en) |
JP (1) | JP2017211155A (en) |
WO (1) | WO2017204063A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113251697B (en) * | 2020-02-12 | 2022-11-15 | 青岛海尔新能源电器有限公司 | Hanging type heat pump unit and heat pump water heater |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007051822A (en) * | 2005-08-18 | 2007-03-01 | Matsushita Electric Ind Co Ltd | Air-conditioner |
JP2008304115A (en) * | 2007-06-07 | 2008-12-18 | Sharp Corp | Heat pump unit and heat pump type water heater |
JP2011196591A (en) * | 2010-03-18 | 2011-10-06 | Panasonic Corp | Heat pump unit of heat pump water heater |
JP5601227B2 (en) * | 2011-01-31 | 2014-10-08 | 三菱電機株式会社 | Heat pump hot water supply system, heat pump hot water supply system heat pump unit, and heat pump hot water supply system relay unit |
JP5990771B2 (en) * | 2012-07-10 | 2016-09-14 | パナソニックIpマネジメント株式会社 | Heat pump water heater |
-
2016
- 2016-05-11 US US16/304,810 patent/US20200173690A1/en not_active Abandoned
- 2016-05-27 JP JP2016106115A patent/JP2017211155A/en active Pending
-
2017
- 2017-05-11 WO PCT/JP2017/018600 patent/WO2017204063A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2017204063A1 (en) | 2017-11-30 |
JP2017211155A (en) | 2017-11-30 |
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