EP3598038B1 - Appareil de pompe à chaleur - Google Patents

Appareil de pompe à chaleur Download PDF

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Publication number
EP3598038B1
EP3598038B1 EP17900795.0A EP17900795A EP3598038B1 EP 3598038 B1 EP3598038 B1 EP 3598038B1 EP 17900795 A EP17900795 A EP 17900795A EP 3598038 B1 EP3598038 B1 EP 3598038B1
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EP
European Patent Office
Prior art keywords
electrical
receiving tray
pump apparatus
heat pump
heat
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.)
Active
Application number
EP17900795.0A
Other languages
German (de)
English (en)
Other versions
EP3598038A1 (fr
EP3598038A4 (fr
Inventor
Daiki FUJITA
Kaname HATTORI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP3598038A1 publication Critical patent/EP3598038A1/fr
Publication of EP3598038A4 publication Critical patent/EP3598038A4/fr
Application granted granted Critical
Publication of EP3598038B1 publication Critical patent/EP3598038B1/fr
Active legal-status Critical Current
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Classifications

    • 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

Definitions

  • the present invention relates to a heat pump apparatus.
  • a heat pump apparatus disclosed in PTL 1 described below has the following configuration.
  • the bracketed numerals are reference numerals in PTL 1.
  • An electrical equipment box (20) accommodates a control board (21) that controls a heat pump unit (1).
  • the electrical equipment box (20) is arranged in a blowing chamber (16).
  • Paragraph 0024 in PTL 1 includes a wording of "even when mounted parts such as an electrolytic capacitor (26) fall from the control board (21), the mounted parts fall into a metal receiving tray (27) on the inner bottom portion of the electrical equipment box (20), and hence damage is not caused to other functional parts below the electrical equipment box (20)".
  • Paragraph 0027 in PTL 1 includes a wording of "the electrical equipment box (20) is a molded article made of flame-resistant resin, and hence gaps are not formed in the corner portions of the electrical equipment box (20) and there is no fear of water entering the electrical equipment box (20). Therefore, the electrical equipment box (20) can be provided on the blowing chamber (16) side exposed to wind and rain".
  • JP 2005 127691 A describes an outdoor unit of an air conditioner, in which the control board is mounted with the heating element in an electrical component box. Attachment parts for attaching the control board and the heat sink for cooling the heating element are provided in the electrical component box. The heating element is attached to the control board via a holder and the holder has a holding part housing the heating element, with a pedestal abutting on one part of the heating element.
  • EP 2 244 024 A1 describes an outdoor unit control box disposed above a machine chamber in a casing, the interior of which is partitioned by a partition panel. A part of the control box protrudes to the side of the heat exchange chamber, while an air exhaust port is provided at one end of an air passage formed in the control box. An exhaust air duct extending that has, at an end thereof an air vent port which opens toward the air passage, is provided to the air exhaust port.
  • JP 2004 271168 A discloses an outdoor machine of an air conditioner including the features of the preamble of claim 1 and capable of cooling the inside of an electrical equipment box by providing air passages communicating with opening parts of said box.
  • the heat pump apparatus disclosed in PTL 1 has the following problem.
  • the electrical equipment box (20) provided on the blowing chamber (16) side exposed to wind and rain is sealed, and hence the inside of the electrical equipment box (20) is easily filled with heat and becomes high in temperature.
  • the lifespan of the electrical parts provided on the control board (21) tends to be short.
  • the present invention has been provided in view of the problem as described above, and an object thereof is to provide a heat pump apparatus capable of preventing damage on other parts even when an electrical part falls from an electrical circuit board and capable of preventing the periphery of the electrical circuit board from being filled with heat.
  • the damage on the other parts can be prevented even when the electrical part falls from the electrical circuit board, and the periphery of the electrical circuit board can be prevented from being filled with heat.
  • Fig. 1 is a piping system diagram of a hot-water storing hot-water supplying system 90 including a heat pump apparatus 1 according to Embodiment 1.
  • the hot-water storing hot-water supplying system 90 includes the heat pump apparatus 1 and a tank unit 91.
  • the heat pump apparatus 1 is provided outdoors.
  • the tank unit 91 may be provided outdoors or may be provided indoors.
  • the heat pump apparatus 1 includes a compressor 2, a heat exchanger 3, a first expansion valve 4a, a second expansion valve 4b, an air-to-refrigerant heat exchanger 5, an internal heat exchanger 6, and a blower 7.
  • the heat pump apparatus 1 includes a refrigerant circuit, and performs the operation of a refrigerating cycle, that is, a heat pump cycle.
  • the compressor 2 compresses low-pressure refrigerant gas.
  • the refrigerant may be any one of carbon dioxide, ammonia, propane, isobutane, fluorocarbon such as HFC, HFO-1123, and HFO-1234yf, for example.
  • the heat exchanger 3 exchanges heat between the high-pressure and high-temperature refrigerant discharged from the compressor 2 and water or other liquid heat media.
  • the liquid heat medium may be a calcium chloride solution, an ethylene glycol solution, or alcohol, for example.
  • the first expansion valve 4a and the second expansion valve 4b are examples of decompression devices that decompress a high-pressure refrigerant, to thereby obtain a low-pressure refrigerant.
  • the decompressed low-pressure refrigerant is placed in the gas-liquid two-phase state.
  • the air-to-refrigerant heat exchanger 5 is a heat exchanger that exchanges heat between the low-pressure refrigerant and the air in the atmosphere. In the air-to-refrigerant heat exchanger 5, the low-pressure refrigerant evaporates by absorbing the heat in the air.
  • the heat exchange in the air-to-refrigerant heat exchanger 5 can be facilitated by blowing air to the air-to-refrigerant heat exchanger 5 by the blower 7.
  • the internal heat exchanger 6 includes a high-pressure passage and a low-pressure passage.
  • the internal heat exchanger 6 exchanges heat between a high-pressure refrigerant passing through the high-pressure passage and a low-pressure refrigerant passing through the low-pressure passage.
  • the low-pressure refrigerant gas that has evaporated in the air-to-refrigerant heat exchanger 5 is sucked to the compressor 2 via the low-pressure passage of the internal heat exchanger 6.
  • the refrigerant circuit in this embodiment includes a first path 8 in which the refrigerant that has passed through the heat exchanger 3 reaches the air-to-refrigerant heat exchanger 5 via the high-pressure passage of the internal heat exchanger 6, and a second path 9 in which the refrigerant that has passed through the heat exchanger 3 reaches the air-to-refrigerant heat exchanger 5 without passing through the internal heat exchanger 6.
  • the first expansion valve 4a is provided in the first path 8 downstream of the high-pressure passage of the internal heat exchanger 6.
  • the second expansion valve 4b is provided in the second path 9.
  • the ratio of the flow rate of the refrigerant reaching the air-to-refrigerant heat exchanger 5 from the heat exchanger 3 via the internal heat exchanger 6 and the flow rate of the refrigerant reaching the air-to-refrigerant heat exchanger 5 from the heat exchanger 3 without passing through the internal heat exchanger 6 can be changed.
  • the tank unit 91 includes a hot water storage tank 92, a water pump 93, a flow path switching valve 94, and a bypass passage 95.
  • the heat pump apparatus 1 and the tank unit 91 are connected to each other via external piping 96 and 97.
  • Hot water before heating and hot water after heating are accommodated in the hot water storage tank 92.
  • thermal stratification in which the temperature on the upper side is high and the temperature on the lower side is low is formed due to the difference in specific gravity of water in accordance with the temperature.
  • a hot water supply pipe (not shown) for supplying hot water to terminals such as a hot water supply faucet, a shower, and a bathtub is connected to the upper portion of the hot water storage tank 92.
  • a water supply pipe (not shown) that supplies water from water sources such as waterworks is connected to the lower portion of the hot water storage tank 92.
  • the hot water in the upper portion of the hot water storage tank 92 is sent out to the hot water supply pipe by the water pressure applied to the inside of the hot water storage tank 92 from the water supply pipe.
  • the lower portion of the hot water storage tank 92 is connected to an inlet of the water pump 93 via a conduit.
  • An outlet of the water pump 93 is connected to the flow path switching valve 94.
  • the flow path switching valve 94 is connected to a water inlet of the heat exchanger 3 of the heat pump apparatus 1 via the external piping 96.
  • the hot-water storing hot-water supplying system 90 can perform heat accumulating operation in which the hot water heated by the heat pump apparatus 1 is caused to flow into the hot water storage tank 92.
  • the compressor 2, the blower 7, and the water pump 93 are operated.
  • the water flowing out from the lower portion of the hot water storage tank 92 flows into the heat exchanger 3 of the heat pump apparatus 1 through the water pump 93, the flow path switching valve 94, and the external piping 96.
  • the water is heated by the refrigerant in the heat exchanger 3 and becomes hot water.
  • the temperature of the hot water heated in the heat exchanger 3 may be from about 65°C to about 90°C, for example.
  • the hot water flowing out from the heat exchanger 3 returns to the tank unit 91 through the external piping 97, and flows into the upper portion of the hot water storage tank 92 through a tank upper portion pipe 98.
  • the flow path switching valve 94 can switch the flow path so that the water discharged from the water pump 93 flows into the tank upper portion pipe 98 through the bypass passage 95 instead of the heat pump apparatus 1.
  • the use of the heat pump apparatus 1 is not limited to the use for supplying hot water as in the illustrated example.
  • the heat pump apparatus 1 may heat a liquid heat medium for space heating, for example.
  • the liquid heat medium heated by the heat pump apparatus 1 may be supplied to at least one heating unit out of a floor heating panel provided under the floor, a radiator or a panel heater provided on an indoor wall surface, and a fan convector.
  • Fig. 2 is a perspective view illustrating the external appearance of the heat pump apparatus 1 according to Embodiment 1.
  • the heat pump apparatus 1 includes a front panel 19, a side panel 20, a top panel 21, a grille 12, and leg portions 41.
  • the heat pump apparatus 1 is fixed to a ground surface or a floor surface via the leg portions 41.
  • the "upper direction”, the "front direction”, and the “right direction” are defined as indicated by the arrows in Fig. 2 in order to facilitate the understanding of the drawings.
  • the direction opposite to the "upper direction” is the “lower direction”.
  • the direction opposite to the "front direction” is the "rear direction”.
  • the direction opposite to the "right direction” is the "left direction”.
  • Fig. 3 is an exploded perspective view of the heat pump apparatus 1 according to Embodiment 1.
  • the heat pump apparatus 1 further includes a partition plate 16, an electrical unit 17, and a bottom plate 18.
  • the bottom plate 18, the front panel 19, the side panel 20, and the top panel 21 correspond to a casing of the heat pump apparatus 1.
  • the casing of the heat pump apparatus 1 is preferred to be made of metal.
  • the partition plate 16 and the electrical unit 17 are provided in the casing of the heat pump apparatus 1.
  • the bottom plate 18 corresponds to the base of the heat pump apparatus 1.
  • Component devices such as the compressor 2 are mounted on the bottom plate 18.
  • the leg portions 41 are fixed to the lower surface of the bottom plate 18.
  • the front panel 19 covers the front surface and the left side surface of the heat pump apparatus 1.
  • the side panel 20 covers a part of the rear surface and the right side surface of the heat pump apparatus 1.
  • the top panel 21 covers the upper surface of the heat pump apparatus 1.
  • the air-to-refrigerant heat exchanger 5 is provided so as to cover a large part of the rear surface and the left side surface of the heat pump apparatus 1.
  • the blower 7 is provided between the air-to-refrigerant heat exchanger 5 and the front panel 19.
  • the blower 7 in this embodiment includes a propeller fan.
  • the inner space of the casing of the heat pump apparatus 1 is partitioned into a first chamber 14 and a second chamber 15 by the partition plate 16.
  • the blower 7 is accommodated in the first chamber 14.
  • the compressor 2, the refrigerant piping, and the like are provided.
  • a case 13 is provided below the blower 7.
  • the heat exchanger 3 is accommodated in the case 13 in a state of being covered with a heat insulating material.
  • the front panel 19 has an opening in a position facing the blower 7.
  • the grille 12 that covers the opening is mounted on the front panel 19.
  • the blower 7 When the blower 7 is operated, the outside air flows into the first chamber 14 through the air-to-refrigerant heat exchanger 5, and is exhausted to the front side of the heat pump apparatus 1 through the grille 12.
  • the electrical unit 17 includes an electrical part for driving at least one of the compressor 2 and the blower 7.
  • the electrical unit 17 may include an electrical part such as an inverter power supply that drives and controls a motor of the compressor 2 and a motor of the blower 7.
  • the electrical unit 17 includes a terminal block. The terminal block is used when external electric wiring is connected.
  • a service panel 22 is removably mounted on the side panel 20. The service panel 22 protects the terminal block.
  • a connection portion cover 42 is removably mounted on the side panel 20 so as to be below the service panel 22. The connection portion cover 42 protects a connection portion (not shown) connected to the external piping 96 and 97.
  • Fig. 4 is a front view of the electrical unit 17 of the heat pump apparatus 1 according to Embodiment 1.
  • Fig. 5 is a bottom view of the electrical unit 17 illustrated in Fig. 4 .
  • the electrical unit 17 includes a receiving tray 23, an electrical circuit board 24, a board support 25, a heat sink 26, a heat sink support 27, and a terminal block support 28 in this embodiment.
  • the electrical part for driving at least one of the compressor 2 and the blower 7 is simply referred to as an "electrical part".
  • the electrical circuit board 24 includes an electrical part mounted on the lower surface thereof.
  • the electrical circuit board 24 may include other electrical parts mounted on the upper surface thereof.
  • the electrical circuit board 24 is held by the board support 25.
  • the receiving tray 23 includes a receiving portion 23a located below the electrical circuit board 24.
  • the receiving portion 23a covers at least a part of the electrical circuit board 24 from below.
  • the following effect can be obtained. Even when an electrical part falls from the electrical circuit board 24 for some reason, the electrical part can be received by the receiving portion 23a of the receiving tray 23. Therefore, a situation in which the electrical part that has fell further falls down and damages other devices can be reliably prevented.
  • the receiving portion 23a of the receiving tray 23 only needs to cover a region of the electrical circuit board 24 on which the electrical parts that may fall are mounted.
  • the electrical unit 17 is seen from below, there may be a part of the electrical circuit board 24 that is not covered by the receiving portion 23a of the receiving tray 23.
  • the heat sink 26 includes a plurality of heat dissipating fins for dissipating heat generated by the electrical circuit board 24.
  • the heat sink 26 is held by the heat sink support 27.
  • the heat sink support 27 is fixed to the board support 25.
  • the terminal block support 28 holds a terminal block 34 described below.
  • the terminal block 34 has a terminal to which an electrical wire (not shown) from the outside of the heat pump apparatus 1 is connected.
  • the "electrical wire from the outside of the heat pump apparatus 1" is, for example, electric wiring that connects the heat pump apparatus 1 and the tank unit 91 to each other, or an electricity supplying wire that supplies electricity to the heat pump apparatus 1.
  • the board support 25, the heat sink support 27, and the terminal block support 28 correspond to the framework of the electrical unit 17.
  • the receiving tray 23 is held by the framework.
  • an opening 30 through which air is capable of passing is formed the board support 25 that is the framework, and the receiving portion 23a of the receiving tray 23.
  • the space between the electrical circuit board 24 and the receiving portion 23a of the receiving tray 23 is an inner space 31 of the electrical unit 17.
  • the inner space 31 of the electrical unit 17 communicates with the outside of the electrical unit 17 via the opening 30 in a ventilatable manner.
  • the inner space 31 of the electrical unit 17 that is the space that the electrical circuit board 24 faces is prevented from being filled with heat.
  • the temperature of the electrical circuit board 24 can be reduced.
  • the deterioration of the electrical circuit board 24 due to heat can be prevented or alleviated.
  • the lifespan of the electrical circuit board 24 can be prevented from being reduced.
  • the part of the electrical unit 17 on the left side with respect to a border line 32 is located in the first chamber 14. That is, the heat sink 26 is located in the first chamber 14. Meanwhile, a part of the electrical unit 17 on the right side with respect to the border line 32 is located in the second chamber 15. That is, the opening 30 in the electrical unit 17 is located in the second chamber 15.
  • the air blown by the blower 7 flows in the first chamber 14. The dissipation of the heat from the heat sink 26 can be facilitated by the flow of the air.
  • the inner space 31 of the electrical unit 17 does not communicate with the inner space of the first chamber 14.
  • the inner space 31 of the electrical unit 17 communicates with the inner space of the second chamber 15 via the opening 30 in a ventilatable manner. Dirt and rainwater enter the first chamber 14 together with the air from the outside.
  • the second chamber 15 is covered so that the dirt and rainwater from the outside does not enter.
  • the inner space 31 of the electrical unit 17 does not communicate with the inner space of the first chamber 14, and hence the dirt and rainwater in the first chamber 14 can be prevented from entering the inner space 31 of the electrical unit 17. Therefore, according to this embodiment, the dirt and rainwater can be reliably prevented from adhering onto the electrical circuit board 24.
  • the opening 30 is formed in the front surface of the electrical unit 17.
  • the electrical unit 17 may include a second opening 33, which is formed in a position opposite to the opening 30 and through which the air is capable of passing.
  • the second opening 33 is formed in the rear surface of the electrical unit 17.
  • the inner space 31 of the electrical unit 17 communicates with the outside of the electrical unit 17 via the second opening 33 in a ventilatable manner. According to this embodiment, the air in the inner space 31 of the electrical unit 17 can flow in one direction through the opening 30 and the second opening 33, and hence the inner space 31 of the electrical unit 17 can be prevented from being filled with heat in a more reliable manner.
  • the electrical unit 17 includes an electrical wire 29 extending from the electrical circuit board 24 to the outside of the electrical unit 17.
  • the receiving tray 23 includes a sandwiching portion 23b that sandwiches the electrical wire 29.
  • the sandwiching portion 23b protrudes from a side wall of the receiving tray 23.
  • the electrical wire 29 can be easily installed in an appropriate position by providing the sandwiching portion 23b.
  • the electrical wire 29 extends to the outside of the electrical unit 17 from the electrical circuit board 24 through the opening 30. According to this embodiment, the operation of extending and installing the electrical wire 29 to the outside of the electrical unit 17 can be easily performed by forming the opening 30.
  • Fig. 6 is a perspective view of the receiving tray 23 included in the electrical unit 17 illustrated in Fig. 4 seen from diagonally above.
  • Fig. 7 is a perspective view of the receiving tray 23 illustrated in Fig. 6 seen from diagonally below.
  • the receiving portion 23a of the receiving tray 23 includes a horizontal receiving surface.
  • a level difference, an inclined surface, and the like may be formed on a part of the receiving portion 23a of the receiving tray 23.
  • the receiving tray 23 in this embodiment is made of flame-retardant plastic. Alternatively, at least a part the receiving tray 23 may be made of metal.
  • the receiving portion 23a of the receiving tray 23 preferably includes a rising edge 23c.
  • the rising edge 23c is formed on a large part of the periphery of the receiving portion 23a. According to this embodiment, the electrical part that has fell from the electrical circuit board 24 to the receiving portion 23a of the receiving tray 23 can be reliably prevented from falling out of the receiving portion 23a by the rising edge 23c.
  • the receiving tray 23 preferably includes a protruding portion 23d that protrudes to the front direction, a protruding portion 23e that protrudes to the rear direction, and protruding portions 23f that protrude to the upper direction.
  • the protruding portions 23f are formed on the front portion and the rear portion.
  • the receiving tray 23 preferably includes protruding portions 23g that protrudes to the lower direction from the lower surface of the receiving portion 23a. In the illustrated example, a pair of the protruding portions 23g are arranged in the front-rear direction. An embayment portion 23h is formed in the right portion of the receiving tray 23.
  • the receiving tray 23 may further include a protruding portion 23i that protrudes to the front direction from the edge of the embayment portion 23h, and a protruding portion 23j that protrudes to the rear direction from the edge of the embayment portion 23h.
  • the protruding portion 23i and the protruding portion 23j are in positions opposed to each other across the embayment portion 23h.
  • the functions of the protruding portions 23d, 23e, 23f, 23g, 23i, and 23j are described below.
  • the terminal block support 28 enters the embayment portion 23h of the receiving tray 23.
  • Fig. 8 is a perspective view of the board support 25 included in the electrical unit 17 illustrated in Fig. 4 seen from diagonally above.
  • Fig. 9 is a perspective view of the board support 25 illustrated in Fig. 8 seen from diagonally below.
  • the board support 25 includes an outer frame portion 25a that is substantially a rectangle in planar view, and an upper surface portion 25b that covers the upper surface.
  • the board support 25 includes a fixing structure 25c for fixing the electrical circuit board 24.
  • the electrical circuit board 24 is fixed to a position on the inner side of the outer frame portion 25a and a place below the upper surface portion 25b.
  • the board support 25 includes a pair of recessed portions 25d for receiving the front end portions of the pair of protruding portions 23f of the receiving tray 23. In Fig. 9 , out of the recessed portions 25d, only the recessed portion 25d on the front side is seen, and the recessed portion 25d on the rear side is hidden and cannot be seen.
  • the board support 25 includes a pair of fixing portions 25e for fixing the heat sink support 27.
  • the board support 25 has a pair of holes 25f for receiving screws that fix the terminal block support 28.
  • the board support 25 in this embodiment is made of flame-retardant plastic. Alternatively, at least a part of the board support 25 may be made of metal.
  • Fig. 10 is a perspective view of the heat sink 26 and the heat sink support 27 included in the electrical unit 17 illustrated in Fig. 4 seen from diagonally above.
  • Fig. 11 is a perspective view of the heat sink 26 and the heat sink support 27 illustrated in Fig. 10 seen from diagonally below.
  • the heat sink support 27 has an upside-down L-shape when seen from the front.
  • the heat sink support 27 has a pair of slit holes 27a for engaging with the fixing portions 25e of the board support 25.
  • the heat sink support 27 is fixed to the board support 25 by fitting tabs protruding from the inner walls of the fixing portions 25e of the board support 25 in the slit holes 27a in the heat sink support 27.
  • the heat sink support 27 includes a protruding portion 27b protruding in the front direction, a protruding portion 27c protruding in the lower direction, and a sustaining portion 27d.
  • the heat sink support 27 in this embodiment is made with use of a thin metal plate.
  • Fig. 12 is a perspective view of the terminal block support 28 included in the electrical unit 17 illustrated in Fig. 4 seen from diagonally above.
  • Fig. 13 is a perspective view of the terminal block support 28 illustrated in Fig. 12 seen from diagonally below.
  • the terminal block support 28 in this embodiment is made with use of a thin metal plate.
  • the terminal block 34 is mounted on the terminal block support 28.
  • the terminal block support 28 has a pair of through holes 28a through which screws pass.
  • the terminal block support 28 is fixed to the board support 25 by tightening the screws passing through the through holes 28a with respect to the holes 25f in the board support 25.
  • the terminal block support 28 includes a sustaining portion 28c and a sustaining portion 28d.
  • Fig. 14 is a cross-sectional view taken along line Y-Y in Fig. 4 .
  • the illustration of the electrical part mounted on the lower surface of the electrical circuit board 24 that may fall off is omitted.
  • Fig. 15 is a view illustrating the details of section A in Fig. 14 .
  • Fig. 16 is a view illustrating the details of section B in Fig. 14 .
  • the receiving tray 23 is prevented from moving to the front direction with respect to the heat sink support 27 by bringing the protruding portion 23d of the receiving tray 23 in contact with an inner wall 27e of the heat sink support 27.
  • Fig. 15 the receiving tray 23 is prevented from moving to the front direction with respect to the heat sink support 27 by bringing the protruding portion 23d of the receiving tray 23 in contact with an inner wall 27e of the heat sink support 27.
  • Fig. 15 the receiving tray 23 is prevented from moving to the front direction with respect to the heat sink support 27 by bringing the protruding portion 23d of the receiving tray 23
  • the receiving tray 23 is prevented from moving to the rear direction with respect to the heat sink support 27 by bringing the protruding portion 23e of the receiving tray 23 in contact with the protruding portion 27b of the heat sink support 27.
  • the receiving tray 23 can be reliably positioned with respect to the heat sink support 27 in terms of the front-rear direction without the use of a screw.
  • the protruding portion 23d and the protruding portion 23e correspond to a first contact portion that positions the receiving tray 23 with respect to the heat sink support 27 that is the framework in terms of a first horizontal direction, that is, the front-rear direction.
  • Fig. 17 is a cross-sectional view taken along line X-X in Fig. 5 .
  • a part of the weight of the receiving tray 23 can be supported by the heat sink support 27 by placing the left end portion of the receiving tray 23 on the sustaining portion 27d of the heat sink support 27.
  • the weight of the right portion of the receiving tray 23 is supported by the terminal block support 28.
  • the board support 25, the heat sink support 27, and the terminal block support 28 that are the framework can reliably support the weight of the receiving tray 23 without the use of a screw.
  • Fig. 18 is a view illustrating the details of section C in Fig. 17 .
  • the illustration of the electrical part mounted on the lower surface of the electrical circuit board 24 that may fall off is omitted.
  • Fig. 19 is a view illustrating the details of section D in Fig. 17 .
  • the receiving tray 23 is prevented from moving to the left direction with respect to the heat sink support 27 by bringing the protruding portions 23g of the receiving tray 23 in contact with the protruding portion 27c of the heat sink support 27.
  • the receiving tray 23 is prevented from moving to the right direction with respect to the board support 25 by inserting the front end portions of the protruding portions 23f of the receiving tray 23 into the recessed portions 25d in the board support 25.
  • the protruding portions 23g and the protruding portions 23f correspond to a second contact portion that positions the receiving tray 23 with respect to the board support 25 and the heat sink support 27 that are the framework in terms of a second horizontal direction.
  • the second horizontal direction is a direction orthogonal to the first horizontal direction.
  • the left-right direction corresponds to the second horizontal direction.
  • the recessed portions 25d of the board support 25 correspond to a positioning portion that positions the receiving tray 23 in the horizontal direction.
  • the receiving tray 23 is held by the board support 25, the heat sink support 27, and the terminal block support 28 that are the framework without the use of a screw. Therefore, the receiving tray 23 can be manually mounted on the electrical unit 17 in an easy manner at the time of assembly. At that time, the receiving tray 23 can be easily and reliably positioned in an appropriate position with respect to the framework without the use of a screw by providing the first contact portion, the second contact portion, and the positioning portion described above.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Claims (9)

  1. Pompe à chaleur (1), comprenant :
    un échangeur thermique air/réfrigérant (5) configuré pour échanger de la chaleur entre l'air et un réfrigérant ;
    un ventilateur (7) configuré pour souffler de l'air vers l'échangeur thermique air/réfrigérant (5) ;
    un compresseur (2) configuré pour comprimer le réfrigérant ; et
    une unité électrique (17) comprenant une partie électrique destinée à entraîner au moins l'un du ventilateur (7) et du compresseur (2), dans laquelle :
    l'unité électrique (17) comprend :
    une carte de circuit électrique (24) comprenant une surface supérieure, une surface inférieure, et la partie électrique montée sur la surface inférieure ;
    un plateau de réception (23) comprenant une partie de réception (23b) qui recouvre au moins une partie de la carte de circuit électrique (24) depuis le dessous, la partie de réception (23b) étant configurée pour recevoir la partie électrique lorsque la partie électrique tombe de la carte de circuit électrique (24) ;
    un châssis (25, 27, 28) qui maintient la carte de circuit électrique (24) et le plateau de réception (23) ;
    une ouverture (30) qui est formée entre le châssis (25, 27, 28) et la partie de réception (23b) du plateau de réception (23) et par laquelle l'air peut passer ; et
    un bloc de jonction (34) comprenant une borne sur laquelle un fil électrique qui provient de l'extérieur de la pompe à chaleur (1) est branché ;
    un dissipateur thermique (26) configuré pour dissiper la chaleur générée par la carte de circuit électrique (24) ;
    un espace entre la carte de circuit électrique (24) et la partie de réception (23b) du plateau de réception (23) est un espace interne (31) de l'unité électrique (17) ;
    l'espace interne (31) de l'unité électrique (17) communique avec l'extérieur de l'unité électrique (17) via l'ouverture (30) ;
    caractérisée en ce que la pompe à chaleur (1) comprend un fil électrique (29) qui s'étend de la carte de circuit électrique (24) vers l'extérieur de l'unité électrique (17),
    dans laquelle le plateau de réception (23) comprend une partie de prise en sandwich qui prend en sandwich le fil électrique (29) ;
    et
    dans laquelle le châssis (25, 27, 28) et le plateau de réception (23) sont des parties distinctes mécaniquement reliées ;
    caractérisée en outre en ce que le châssis (25, 27, 28) comprend :
    un support de carte (25) qui maintient la carte de circuit électrique (24) ;
    un support de dissipateur thermique (27) fixé sur le support de carte (25), le support de dissipateur thermique (27) maintenant le dissipateur thermique (26) ; et
    un support de bloc de jonction (28) fixé sur le support de carte (25), le support de bloc de jonction (28) maintenant le bloc de jonction (34) ; et dans laquelle
    au moins l'un du support de dissipateur thermique (27) et du support de bloc de jonction (28) comprend une partie de soutien (27d, 28c, 28d) configurée pour soutenir un poids du plateau de réception (23).
  2. Pompe à chaleur (1) selon la revendication 1, dans laquelle la partie de réception (23b) du plateau de réception (23) possède un bord montant (23c).
  3. Pompe à chaleur (1) selon la revendication 1 ou 2, dans laquelle :
    le plateau de réception (23) comprend une première partie de contact (23d, 23b) et une seconde partie de contact (23g, 23f) qui sont en contact avec le châssis (25, 27, 28) ;
    la première partie de contact (23d, 23b) est adaptée pour positionner le plateau de réception (23) par rapport au châssis (25, 27, 28) en termes de première direction horizontale ; et
    la seconde partie de contact (23g, 23f) est adaptée pour positionner le plateau de réception (23) par rapport au châssis (25, 27, 28) en termes d'une seconde direction horizontale orthogonale par rapport à la première direction horizontale.
  4. Pompe à chaleur (1) selon l'une quelconque des revendications 1 à 3, dans laquelle le plateau de réception (23) est configuré pour être maintenu par le châssis (25, 27, 28) sans utiliser de vis.
  5. Pompe à chaleur (1) selon l'une quelconque des revendications 1 à 4, dans laquelle le fil électrique (29) s'étend vers l'extérieur de l'unité électrique (17) depuis la carte de circuit électrique (24) via l'ouverture (30).
  6. Pompe à chaleur (1) selon l'une quelconque des revendications 1 à 5, comprenant en outre un boîtier (18, 19, 20, 21) comprenant une première chambre (14) qui contient le ventilateur (7), et une seconde chambre (15) qui contient le compresseur (2), dans laquelle l'espace interne (31) de l'unité électrique (17) ne communique pas avec un espace interne (31) de la première chambre (14) et communique avec un espace interne (31) de la seconde chambre (15) via l'ouverture (30).
  7. Pompe à chaleur (1) selon l'une quelconque des revendications 1 à 6, dans laquelle :
    l'unité électrique (17) comprend une seconde ouverture (33) qui est formée dans une position opposée à l'ouverture (30) et par laquelle l'air peut passer ; et
    l'espace interne (31) de l'unité électrique (17) communique avec l'extérieur de l'unité électrique (17) via la seconde ouverture (33).
  8. Pompe à chaleur (1) selon l'une quelconque des revendications 1 à 7, dans laquelle le support de carte (25) comprend une partie de positionnement (25d) qui positionne le plateau de réception (23) en termes de direction horizontale.
  9. Pompe à chaleur (1) selon l'une quelconque des revendications 1 à 8, comprenant en outre un échangeur thermique (3) configuré pour échanger de la chaleur entre le réfrigérant compressé par le compresseur (2) et de l'eau ou un autre milieu caloporteur liquide.
EP17900795.0A 2017-03-16 2017-03-16 Appareil de pompe à chaleur Active EP3598038B1 (fr)

Applications Claiming Priority (1)

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PCT/JP2017/010754 WO2018167928A1 (fr) 2017-03-16 2017-03-16 Appareil de pompe à chaleur

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JP2020159669A (ja) * 2019-03-28 2020-10-01 株式会社富士通ゼネラル 空気調和機の室外機
CN110779130B (zh) * 2019-11-04 2021-12-03 广东美的暖通设备有限公司 水力装置和热水空调器

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JP2004271168A (ja) * 2003-02-18 2004-09-30 Sanyo Electric Co Ltd 空気調和機の室外機

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JP4660130B2 (ja) * 2003-09-30 2011-03-30 三洋電機株式会社 空気調和機の室外機
JP4746867B2 (ja) * 2004-12-24 2011-08-10 東芝キヤリア株式会社 空気調和装置の室外機
WO2009041424A1 (fr) * 2007-09-28 2009-04-02 Toshiba Carrier Corporation Unité extérieure pour climatiseur
JP2009198064A (ja) * 2008-02-20 2009-09-03 Mitsubishi Heavy Ind Ltd 室外機のコントロールボックス
JP2010038419A (ja) 2008-08-04 2010-02-18 Corona Corp ヒートポンプ装置
JP5160998B2 (ja) * 2008-08-08 2013-03-13 株式会社コロナ ヒートポンプ装置
JP5280236B2 (ja) * 2009-02-06 2013-09-04 株式会社コロナ 空気調和機の室外機
JP2011007363A (ja) * 2009-06-23 2011-01-13 Sanyo Electric Co Ltd 室外ユニット
JP6223262B2 (ja) * 2014-04-04 2017-11-01 三菱電機株式会社 空気調和機の室外機
JP6475040B2 (ja) * 2015-02-25 2019-02-27 シャープ株式会社 空気調和機の室外機

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JP2004271168A (ja) * 2003-02-18 2004-09-30 Sanyo Electric Co Ltd 空気調和機の室外機

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EP3598038A4 (fr) 2020-03-25
JPWO2018167928A1 (ja) 2019-07-04
WO2018167928A1 (fr) 2018-09-20
JP6787477B2 (ja) 2020-11-18

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