Heat pump system and drum-type clothes treatment device

Abstract

The utility model provides a heat pump system and a drum-type clothes processing device. The heat pump system and the drum-type clothes processing device can prevent an electrified part of a compressor from being short-circuited due to moisture or foam. A heat pump system for drying laundry stored in a drum using heated air, the heat pump system comprising: an air path case in which an air path is formed, the air path case communicating with one side and the other side of the drum; the fan is used for enabling air to flow and guiding the air in the roller into the air path shell; an evaporator that dehumidifies the air; a condenser which is disposed on the downstream side of the evaporator and heats the air; and a compressor that compresses a refrigerant, at least a portion of the compressor is exposed in the air passage, the compressor is formed by fastening the seal cover to the compressor main body, the seal cover has a through-hole, the through-hole is provided with a seal, the seal is provided with a wiring hole, and the wiring hole is formed in the compressor main body. The wiring is electrically connected with the compressor electrification part.

Description

Technical Field

[0001] The utility model relates to a heat pump system and a drum - type laundry treating device, and the heat pump system can prevent the short - circuit of the live part of the compressor caused by moisture or foam. Background Art

[0002] At present, the demand for drum - type laundry treating devices with a drying function is increasing. Such drum - type laundry treating devices include all - in - one washing and drying machines that combine washing and drying functions, dryers that only have a drying function, etc.

[0003] In drum - type laundry treating devices, as a way to achieve the drying function, heat pump devices are being increasingly adopted due to advantages such as energy conservation and gentleness to clothes.

[0004] In addition, during the process of drying clothes, the compressor continuously compresses low - temperature and low - pressure refrigerant into high - temperature and high - pressure refrigerant, transports it to the condenser and evaporator, and exchanges heat with the air in the air duct. The compressor is always in a working state, so the body temperature of the compressor will be very high. In Patent Document 1, in order to cool the compressor by blowing air without reducing the rotation speed of the compressor and without additionally setting a fan, a structure is proposed in which at least a part of the compressor is exposed to the air duct. Thus, the air flow in the air duct can carry away part of the heat of the compressor to cool the compressor, and the heat dissipated by the compressor can be brought into the drum with the air flow in the air duct, increasing the temperature in the drum and helping to improve the drying performance.

[0005] However, when at least a part of the compressor is exposed to the air duct, since the air duct is humid and foam may invade, water droplets or foam formed by moisture may adhere to the live part of the compressor, resulting in a risk of short - circuit of the terminals of the live part of the compressor.

[0006] Prior Art

[0007] Patent Document 1: CN219010750U Summary of the Utility Model

[0008] Problems to be Solved by the Utility Model

[0009] The purpose of this application is to provide a heat pump system and a drum - type laundry treating device that can prevent the short - circuit of the live part of the compressor caused by moisture or foam.

[0010] Solutions for Solving the Problems

[0011] One technical solution of the present utility model provides a heat pump system, which is used in connection with a drum for clothing treatment and dries the clothes stored in the drum by using heated air. The heat pump system is characterized in that it has: an air duct housing, which constitutes the housing of the heat pump system, an air duct is formed inside the air duct housing, the suction air duct of the air duct housing is communicated with one side of the drum, and the air outlet member of the air duct housing is communicated with the other side of the drum; a fan, which is arranged inside the air duct housing and is used to make the air flow, so as to introduce the air in the drum into the air duct housing through the suction air duct; an evaporator, which is arranged inside the air duct housing and dehumidifies the air introduced into the air duct housing; a condenser, which is arranged inside the air duct housing and is arranged at a position downstream of the evaporator in the air flow direction, and heats the air passing through the evaporator; and a compressor, which is arranged inside the air duct housing and compresses the refrigerant flowing in the evaporator and the condenser. At least a part of the compressor is exposed to the air duct. The compressor is formed by fastening a sealing cover to the compressor body. There is a compressor energized part in the space formed by the sealing cover and the compressor body. The sealing cover has a through hole, and a sealing member is arranged in the through hole in a sealed manner. A wiring hole corresponding to the wiring is arranged on the sealing member for the wiring to pass through, and the wiring is electrically connected to the compressor energized part.

[0012] Thereby, it is possible to prevent moisture, foam, etc. existing in the air duct from entering the space formed by the sealing cover and the compressor body through the sealing cover, improve the isolation of the compressor energized part, and thereby prevent the compressor energized part from being short-circuited due to moisture or foam, and improve safety.

[0013] Preferably, the sealing cover is fastened to the compressor body with a sealing gasket interposed therebetween. When the sealing cover is projected onto the sealing gasket, the sealing cover is included within the range of the sealing gasket.

[0014] Thereby, it is possible to further improve the sealing performance of the space formed by the sealing cover and the compressor body based on the sealing gasket, and the sealing gasket can also be used to absorb vibration and suppress the noise during the operation of the compressor.

[0015] Preferably, a threaded column body is formed on the compressor body, a through hole for the threaded column body to penetrate is formed on the sealing cover, and after the threaded column body penetrates the through hole, a nut is used to threadedly engage with the threaded column body to fasten the sealing cover to the compressor body.

[0016] Thereby, the sealing cover can be reliably fastened to the compressor body.

[0017] Another technical solution of the present utility model provides a drum-type clothing treatment device, which is equipped with the above-mentioned heat pump system.

[0018] Effects of the utility model

[0019] Based on the present utility model, it is possible to prevent the short - circuit of the live part of the compressor caused by moisture or foam. Description of the Drawings

[0020] Figure 1 is a perspective view of a drum - type laundry treating apparatus.

[0021] Figure 2 is a top view of a drum - type laundry treating apparatus.

[0022] Figure 3 is Figure 2 a sectional view taken along the line A - A in

[0023] Figure 4 is a perspective view of a drum - type laundry treating apparatus after removing the outer casing.

[0024] Figure 5 is a perspective view of a heat pump system from one perspective.

[0025] Figure 6 is a perspective view of a heat pump system from another perspective.

[0026] Figure 7 is a perspective view of the compressor and the lower casing observed after removing the upper casing.

[0027] Figure 8 is Figure 6 a sectional view taken along the line B - B in

[0028] Figure 9 is a perspective view of the compressor.

[0029] Description of Reference Numerals

[0030] 1: Drum - type laundry treating apparatus; 10: Housing; 11: Right wall panel; 12: Front wall panel; 14: Upper space part; 20: Outer tub; 21: Laundry inlet; 24: Outer tub fitting; 30: Inner tub (drum); 40: Heat pump system; 50: Air duct housing; 51: Suction air duct; 511: Bellows part; 52: Air outlet member; 521: First pipe; 5211: Bellows part; 522: Second pipe; 53: Housing main body; 54: First opening; 55: Second opening; 56: Air outlet; 57: Upper housing; 571: Partition; 58: Lower housing; 581: Bottom wall part; 582: Peripheral wall part; 583: Compressor accommodation part; 60: Evaporator; 61: Windward surface; 62: Air outlet surface; 63: Upper end; 64: Lower end; 70: Condenser; 71: Windward surface; 72: Air outlet surface; 73: Upper end; 74: Lower end; 80: Fan; 85: Compressor; 851: Sealing cover; 852: Threaded column body; 853: Nut; 854: Sealing gasket; 855: Through - hole; 856: Sealing member; 857: Compressor energized part; 858: Compressor main body; X: Rotation axis; S1: First air duct area; S2: Second air duct area; S3: Third air duct area; S4: Fourth air duct area. Detailed implementation mode

[0031] In the following description, the laundry inlet 21 of the drum - type laundry treating apparatus 1 is defined as the front side, the side opposite to the laundry inlet 21 is defined as the rear side, the side where the heat pump system 40 is located is defined as the upper side, the side opposite to the heat pump system 40 is defined as the lower side, and Figure 1 the side where the right wall panel 11 in [[ ]] is defined as the right side, and the side opposite to the right wall panel 11 is defined as the left side.

[0032] <Overall structure of the drum - type laundry treating apparatus>

[0033] As Figures 1 to 3 shown, the drum - type laundry treating apparatus 1 includes: a housing 10; an outer tub 20, which is supported inside the housing 10; an inner tub 30, which is rotatably installed inside the outer tub 20 for storing laundry; and a heat pump system 40, which is connected to the inner tub (drum) 30 for laundry treatment and uses heated air to dry the laundry stored in the drum.

[0034] As Figure 1 shown, the housing 10 forms a generally rectangular parallelepiped - shaped outline of the drum - type laundry treating apparatus 1, and includes a left wall panel (not shown), a right wall panel 11, a front wall panel 12, a rear wall panel (not shown), and a top wall panel (not shown) formed by plates such as metal plates and resin plates. For the convenience of observing the structure inside the housing 10, some or all of the wall panels constituting the housing 10 are appropriately omitted in each drawing.

[0035] As Figure 1 and Figure 3As shown, the outer cylinder 20 has a bottomed cylindrical shape with a laundry inlet 21 at one end. The outer cylinder 20 is installed in the housing 10 with the laundry inlet 21 facing forward, and is elastically supported by a shock absorber on the lower side and a suspension spring on the upper side in the housing 10, thereby preventing the vibration of the outer cylinder 20 from being transmitted to the housing 10. In addition, the drum-type laundry treatment apparatus 1 further includes a door assembly (not shown) for opening and closing the laundry inlet 21. When the door assembly is closed, the laundry inlet 21 is sealed.

[0036] As Figure 3 shown, the inner cylinder 30 has a bottomed cylindrical shape with an open end at one end and is used for storing laundry. The inner cylinder 30 is installed in the outer cylinder 20 with the open end facing the laundry inlet 21 of the outer cylinder 20. A plurality of fine holes can be formed in the wall portion on the outer peripheral side and the bottom side wall portion of the inner cylinder 30, whereby washing water and heated air generated by the heat pump system 40 can flow between the outer cylinder 20 and the inner cylinder 30. In addition, the inner cylinder 30 is driven by a motor (not shown) and can rotate about a rotation axis X extending in the horizontal direction. Among them, the rotation direction of the inner cylinder 30 can be either the clockwise direction when viewed from the front Figure 3 or the counterclockwise direction, or it can be continuously switched between the clockwise direction and the counterclockwise direction. In addition, the rotation axis X of the inner cylinder 30 can also be inclined upward toward the laundry inlet 21.

[0037] <Structure of the heat pump system>

[0038] As Figure 2 shown, when the top wall plate is omitted, the air duct housing 50 of the heat pump system 40 can be seen.

[0039] Figure 3 is Figure 2 a sectional view taken along the A-A direction of, as Figure 3 shown, in the upper space portion 14 above the outer cylinder 20 in the housing 10, an integrally structured heat pump system 40 is disposed, and the heat pump system 40 dries the laundry in the inner cylinder 30 using heated air. The upper space portion 14 refers to the space sandwiched by the top wall plate and the upper arc-shaped outer peripheral surface of the outer cylinder 20 in the vertical direction, and includes not only the space above the highest part of the outer cylinder 20, but also the left and right sides of the highest part and the space slightly below the highest part.

[0040] As Figures 3 to 6As shown, the heat pump system 40 includes: an air duct housing 50, which forms the housing of the heat pump system 40, an air duct is formed inside the air duct housing 50, the air suction pipe 51 of the air duct housing 50 is communicated with one side of the drum, and the air outlet member 52 of the air duct housing 53 is communicated with the other side of the drum; an evaporator 60, which is arranged in the air duct housing 50 and dehumidifies the air flowing in the air duct housing 50 that is led out from the inner cylinder 30 (that is, dehumidifies the air introduced into the air duct housing 50); a condenser 70, which is arranged in the air duct housing 50 at a position downstream of the evaporator 60 in the air flow direction and heats the air passing through the evaporator 60; and a blower 80, which is arranged in the air duct housing 50 at a position downstream of the condenser 70 in the air flow direction and is used to make the air flow, so as to introduce the air in the inner cylinder 30 (drum) into the air duct housing 50 through the air suction pipe 51, and introduce the air that has passed through the evaporator 60 and the condenser 70 into the inner cylinder 30 through the air outlet 56. In addition, the heat pump system 40 further includes a compressor 85, which is used to compress the refrigerant flowing in the evaporator 60 and the condenser 70.

[0041] As Figures 5 to 6 shown, the air duct housing 50 includes: an air suction pipe 51, which extends substantially in the vertical direction, and has a first opening 54 and a second opening 55 at the lower end. The first opening 54 and the second opening 55 are located on the front side or the upper side of the outer cylinder 20. At least a part of the air suction pipe 51 is made of an elastic material such as rubber. The lower end of the air suction pipe 51 is connected to the outer cylinder 20 by means of an outer cylinder fitting 24 (refer to Figure 4 ), and is communicated with the inner cavity of the inner cylinder 30 through the pores in the wall of the inner cylinder 30; an air outlet member 52, which has an air outlet 56 at the lower end. The lower end of the air outlet member 52 is connected to the outer cylinder 20 on the rear side wall (i.e., the bottom wall) of the outer cylinder 20, and the air outlet 56 is located on the rear side of the outer cylinder 30. It is communicated with the inner cavity of the inner cylinder 30 through an air supply port (not shown) provided on the bottom wall of the outer cylinder 20, and the air flowing out from the air outlet 56 flows into the outer cylinder 20 through this air supply port; and a housing main body 53, which is connected between the air suction pipe 51 and the air outlet member 52. The first opening 54, the second opening 55 and the air outlet 56 are respectively communicated with the inner cavity of the drum-type laundry treating apparatus 1 (i.e., the inner cavity of the inner cylinder 30). In addition, as Figures 5 to 6 shown, the air suction pipe 51 includes a telescopic corrugated pipe portion 511, so as to prevent the vibration of the outer cylinder 20 from being transmitted to the housing main body 53 through the air suction pipe 51. The air outlet member 52 includes a first pipe 521 having a telescopic corrugated pipe portion 5211 connected to the housing main body 53 and a second pipe 522 connected to the first pipe 521, so as to prevent the vibration of the outer cylinder 20 from being transmitted to the housing main body 53 through the air outlet member 52.

[0042] As Figures 5 to 6As shown, the housing main body 53 has an upper housing 57 and a lower housing 58. The lower housing 58 is in the shape of a substantially cup opening upward, and has a bottom wall portion 581 and a peripheral wall portion 582. An air suction pipe 51 is connected near the front end of the bottom wall portion 581, and an air outlet member 52 is connected to the peripheral wall portion 582 at the rear side. The upper housing 57 is in the shape of a substantially plate, and is fixed to the upper end of the peripheral wall portion 582 of the lower housing 58 by screws or the like. Inside the internal space of the housing main body 53 surrounded by the upper housing 57 and the lower housing 58, an evaporator 60, a condenser 70, and a blower 80 are arranged. In addition, a compressor accommodation portion 583 (refer to Figure 4 ) is continuously provided forward from the peripheral wall portion 582 at the front side, and the compressor accommodation portion 583 is in the shape of a substantially bottomed cylinder opening upward. The compressor 85 is arranged inside the housing main body 53 by being installed inside the compressor accommodation portion 583. Thus, the evaporator 60, the condenser 70, the blower 80, and the compressor 85 are arranged in the upper space portion 14 in an integrated structure by the housing main body 53.

[0043] As Figures 3 to 4 shown, the evaporator 60 is a substantially plate-shaped microchannel evaporator. A pair of plate surfaces facing each other respectively form a windward surface 61 and an air outlet surface 62, and air passes through the evaporator 60 from top to bottom. The evaporator 60 cools the high-humidity air flowing outside the evaporator 60 by absorbing heat from the refrigerant flowing inside, causing water vapor in the air to condense on the surface of the evaporator 60 and precipitate as condensed water, thereby obtaining dry air. As Figure 3 shown, inside the upper space portion 14, the evaporator 60 is arranged such that the windward surface 61 is on the upper side and the air outlet surface 62 is on the lower side, and the windward surface 61 and the air outlet surface 62 are inclined with respect to the horizontal line in the left-right direction, and the height of the right end is higher than the height of the left end, that is, the right end becomes the upper end 63 and the left end becomes the lower end 64. Thus, the humid air led out from the inner cylinder 30 enters the evaporator 60 from the upper windward surface 61, and water vapor in the air condenses on the surface of the evaporator 60 and precipitates as condensed water. This condensed water separates from the surface of the evaporator 60 under the dual action of its own gravity and the downward-flowing air, which is beneficial for discharging the condensed water. In addition, the evaporator 60 is located directly above the rotation axis X of the inner cylinder 30. Here, "the evaporator 60 is located directly above the rotation axis X of the inner cylinder 30" means that there is more than one intersection point between the orthographic projection of the evaporator 60 on the horizontal plane and the orthographic projection of the rotation axis X of the inner cylinder 30 on the horizontal plane.

[0044] As Figures 3 to 4As shown, the condenser 70 is a substantially plate-shaped microchannel condenser. A pair of plate surfaces facing each other respectively form a windward surface 71 and a leeward surface 72, and air passes through the condenser 70 from bottom to top. The condenser 70 heats the dry air flowing outside the condenser 70 by releasing heat from the refrigerant flowing inside, thereby obtaining high-temperature and dry air. As Figure 3 shown, within the upper space portion 14, the condenser 70 is arranged such that the windward surface 71 is on the lower side and the leeward surface 72 is on the upper side, and the windward surface 71 and the leeward surface 72 are inclined with respect to the horizontal line in the left-right direction, and the height of the left end is higher than the height of the right end. That is to say, the left end becomes the upper end 73 and the right end becomes the lower end 74.

[0045] It should be noted that the evaporator 60 only needs to be able to dehumidify the air and is not limited to the microchannel structure. For example, the evaporator 60 can also be of a copper tube fin type structure. The condenser 70 only needs to be able to heat the air and is not limited to the microchannel structure either. Since, compared with traditional heat exchangers, the microchannel evaporator and the microchannel condenser have a smaller volume under the same heat exchange energy efficiency, which is beneficial to the miniaturization of the drum-type laundry treatment device. Therefore, considering both high heat exchange energy efficiency and device miniaturization, preferably, at least one of the evaporator 60 and the condenser 70 is of a microchannel structure. In particular, the condenser 70 for heating the air is preferably of a microchannel structure.

[0046] As Figure 3As shown, within the upper space portion 14, the condenser 70 is located on the right side of the evaporator 60, and the evaporator 60 and the condenser 70 are arranged along the left-right direction. In other words, the two are arranged along the rotation direction of the inner cylinder 30 around the rotation axis X. Specifically, the upper end 63 of the evaporator 60 and the upper end 73 of the condenser 70 are close to each other, and the lower end 64 of the evaporator 60 extends obliquely downward toward one side (left side) in the rotation direction of the inner cylinder 30, and the lower end 74 of the condenser 70 extends obliquely downward toward the other side (right side) in the rotation direction of the inner cylinder 30. When observed in the direction of the rotation axis X of the inner cylinder 30 (front-rear direction), the evaporator 60 and the condenser 70 are arranged in an inverted V shape. In addition, the height of the lower end 64 of the evaporator 60 is higher than the height of the lower end 74 of the condenser 70, so that the condenser 70 extends downward longer and the condenser 70 is made larger. Further, a V-shaped partition 571 is provided on the surface of the upper housing 57 so as to be recessed downward. The partition 571 is provided between the evaporator 60 and the condenser 70 and abuts against the upper end 63 of the evaporator 60 and the upper end 73 of the condenser 70 respectively. By arranging the evaporator 60 and the condenser 70 along the rotation direction of the inner cylinder 30 and in a substantially inverted V shape, the space above the outer cylinder 20 can be fully utilized, and the heat exchange areas of the evaporator 60 and the condenser 70 can be increased as much as possible. Thus, while ensuring miniaturization in the height direction of the drum-type laundry treating apparatus, the drying efficiency can be improved and the drying time can be shortened.

[0047] Among them, the above-mentioned "the evaporator 60 and the condenser 70 are arranged along the rotation direction of the inner cylinder 30" means that when observed in the direction of the rotation axis X of the inner cylinder 30, the position of the evaporator 60 in the rotation direction of the inner cylinder 30 is different from the position of the condenser 70 in the rotation direction of the inner cylinder 30. As a typical example, it can be that the orthographic projection of the evaporator 60 on the vertical plane orthogonal to the front-rear direction and the orthographic projection of the condenser 70 on the vertical plane orthogonal to the front-rear direction do not have an intersection point.

[0048] As Figure 4 shown, the blower 80 is arranged behind the condenser 70 within the housing main body 53 of the air passage housing 50 and is arranged at the portion of the housing main body 53 connected to the air outlet member 52. That is to say, the condenser 70 and the blower 80 are arranged along the direction of the rotation axis X of the inner cylinder 30 (i.e., the front-rear direction). Further, in the air flow direction within the air passage housing 50, the blower 80 is located on the downstream side of the condenser 70. Thus, the evaporator 60, the condenser 70, and the blower 80 are arranged in sequence from the upstream side of the air flow direction.

[0049] In addition, the blower 80 is located on the right side of the rotation axis X of the inner cylinder 30 in the left-right direction, and the air outlet 56 of the air outlet member 52 is located on the left side of the rotation axis X of the inner cylinder 30 in the left-right direction. It can also be that the blower 80 is located on the left side of the rotation axis X of the inner cylinder 30 in the left-right direction, and the air outlet 56 of the air outlet member 52 is located on the right side of the rotation axis X of the inner cylinder 30 in the left-right direction. That is to say, as long as the blower 80 and the air outlet 56 are located on opposite sides of the rotation axis X of the inner cylinder 30 in the left-right direction. Thus, it is possible to ensure that there is a relatively large installation space for the air supply pipeline (i.e., the air outlet member 52) provided between the blower 80 and the air outlet 56 of the air duct housing 50, avoiding an increase in the air loss of the air outlet member 52 due to multiple bends of the air outlet member 52 in a small space, which is beneficial to reducing the air loss of the air outlet member 52, and thereby enabling the air blown from the blower 80 to flow more smoothly.

[0050] In addition, the blower 80 is arranged such that its rotation axis extends in a direction substantially perpendicular to the outer peripheral surface of the outer cylinder 20. By operating the blower 80, the low-temperature and high-humidity air inside the inner cylinder 30 is sucked into the housing main body 53 from the front side of the inner cylinder 30 via the suction pipe 51. The low-temperature and high-humidity air sucked into the housing main body 53 passes through the evaporator 60 from the upper windward surface 61. Utilizing the heat absorption of the refrigerant in the evaporator 60, the water vapor in the air condenses on the surface of the evaporator 60 and is precipitated as condensed water, thereby obtaining low-temperature and dry air. The low-temperature and dry air emerging from the air outlet surface 62 of the evaporator 60 passes through the condenser 70 from the lower windward surface 71. Utilizing the heat release of the refrigerant in the condenser 70, the air is heated, thereby obtaining high-temperature and dry air. The high-temperature and dry air emerging from the air outlet surface 72 of the condenser 70 enters the inner cylinder 30 from the rear side of the inner cylinder 30 through the air outlet member 52. The high-temperature and dry air contacts the damp clothes inside the inner cylinder 30, evaporates the moisture contained in the clothes into water vapor and takes it away, and thus becomes low-temperature and high-humidity air. The low-temperature and high-humidity air is sucked into the housing main body 53 again from the front side of the inner cylinder 30 via the suction pipe 51.

[0051] As Figure 4As shown, the compressor 85 is located within the upper space portion 14, disposed within the compressor housing portion 583 in front of the condenser 70, and near the upper side of the suction air duct 51. Thus, the length of the connecting pipe between the compressor 85 and the evaporator 60 and the condenser 70 can be shortened. In addition, during the manufacturing process, after the outer cylinder 20 and the inner cylinder 30 are installed, the heat pump system 40 including the evaporator 60, the condenser 70, the blower 80, and the compressor 85 can be integrally installed within the upper space portion 14. Compared with the case where the compressor 85 is located below the outer cylinder 20, the assembly convenience can be greatly improved. Further, in the direction of the rotation axis X of the inner cylinder 30, the compressor 85 is disposed at a position closer to the laundry inlet 21 side (front side) than the condenser 70, and the blower 80 is disposed on the opposite side (rear side) of the compressor 85 with respect to the condenser 70.

[0052] By operating the compressor 85, the low-temperature and low-pressure gaseous refrigerant is compressed to become a high-temperature and high-pressure liquid refrigerant. Then, the refrigerant is sent into the interior of the condenser 70, and becomes a low-temperature and high-pressure refrigerant by releasing heat within the condenser 70. Then, the refrigerant passes through the throttling device to become a low-temperature and low-pressure gas-liquid two-phase refrigerant. Then, the refrigerant enters the evaporator 60, and becomes a low-temperature and low-pressure gaseous refrigerant by absorbing heat. Then, the refrigerant returns to the compressor 85 and is compressed again.

[0053] <Configuration of the air passage>

[0054] As Figures 3 to 4 shown, the air passage within the air passage housing 50 is divided into: a first air passage region S1, which is the region from the first opening 54 of the suction air duct 51 to the windward surface 61 of the evaporator 60 within the housing main body 53, in other words, the region located upstream of the evaporator 60 in the air flow direction; a second air passage region S2, which is the region within the housing main body 53 between the air outlet surface 62 of the evaporator 60 and the windward surface 71 of the condenser 70, in other words, the region located below the evaporator 60 and the condenser 70; and a third air passage region S3, which is the region from the air outlet surface 72 of the condenser 70 to the air outlet 56 of the air outlet member 52, in other words, the region located downstream of the condenser 70 in the air flow direction.

[0055] As Figure 4 shown, the first air passage region S1 is formed such that the air flowing in from the suction air duct 51 under the negative pressure action when the blower 80 operates flows upward from below, and then the air flows from right to left and thus flows from the front of the evaporator 60 toward the windward surface 61 of the evaporator 60.

[0056] As Figure 3As shown, the bottom wall portion 581 of the air passage housing 50 that defines the second air passage region S2 extends in an arc along the outer peripheral surface of the outer cylinder 20. Preferably, a condensate drain outlet is provided in the bottom wall portion 581 of the air passage housing 50 that defines the second air passage region S2. Specifically, a condensate drain outlet is provided near the portion of the bottom wall portion 581 located below the condenser 70. This condensate drain outlet is used to drain the condensate generated by condensation on the surface of the evaporator 60, and is connected via a hose (not shown) or the like to a drainage structure for draining the washing water in the outer cylinder 20. Thus, the condensate flows along the curvature of the bottom wall portion 581 to the condensate drain outlet. Since the condensate drain outlet is located above the inner cylinder 30, the condensate can directly flow by gravity to the drain pipe for draining the washing water in the outer cylinder 20, with a simple structure and low cost. In addition, the flow direction of the condensate is consistent with the flow direction of the air passing through the evaporator 60, which is more conducive to draining the condensate.

[0057] <Structure of the compressor>

[0058] As Figure 4 shown, the compressor 85 is disposed in the compressor accommodation portion 583 of the air passage housing 50 to compress the refrigerant flowing in the evaporator 60 and the condenser 70, and at least a part of the compressor 85 is exposed to the air passage.

[0059] In Figure 7 , a perspective view of the compressor 85 and the lower housing 58 observed after removing the upper housing 57 is shown. As Figure 7 shown, a fourth air passage region S4 is provided between the compressor 85 and the compressor accommodation portion 583. For the air flowing in the third air passage region S3, a part of it will enter the compressor accommodation portion 583.

[0060] As Figure 7 shown by the arrow in, the air that enters the compressor accommodation portion 583 flows in the fourth air passage region S4 to cool the compressor. The air flowing in the fourth air passage region S4 can return to the third air passage region S3 again.

[0061] However, since the compressor 85 is built into the air passage, the air passage is relatively humid and foam may invade, and there is a safety risk for the energized part of the compressor 85 in the air passage. Hereinafter, the structure for isolating the energized part 854 of the compressor of the present utility model will be described.

[0062] Figure 8 Is Figure 6 a cross-sectional view taken along the line B-B in. In Figure 8 , a cross-sectional view of the structure in which the compressor 85 is accommodated in the compressor accommodation portion 583 is shown. As Figure 8As shown, the compressor 85 has: a compressor main body 858 that compresses refrigerant within it; and a sealing cover 851 that is fastened to the compressor main body 858, and the compressor 85 is formed by fastening the sealing cover 851 to the compressor main body 858.

[0063] As Figure 8 shown, within the space formed by the sealing cover 851 and the compressor main body 858, there is a compressor energized part 857, which is connected to external wiring and electrically connected to electronic components within the compressor main body 858.

[0064] As Figure 8 shown, the compressor 85 also has a gasket 854, and the sealing cover 851 is fastened to the compressor main body 858 with the gasket 854 therebetween. Thus, the gasket 854 can be used to improve the sealing performance of the space formed by the sealing cover 851 and the compressor main body 858. Preferably, when the sealing cover 851 is projected onto the gasket 854, the sealing cover 851 is within the range of the gasket 854. Thereby, the sealing performance can be further improved. Based on the structure described above, the isolation of the compressor energized part 857 can be ensured, such that the compressor energized part 857 is not affected by electrically conductive substances such as moisture and foam. Therefore, the gasket 854 can be used to improve the sealing performance against the compressor energized part 857.

[0065] Figure 9 is a perspective view showing the compressor 85. As Figure 9 shown, the sealing cover 851 has a through hole 855, and a seal 856 is provided in the through hole 855 in a sealed manner. Wiring holes corresponding to the wiring are provided in the seal 856 for the wiring to pass through. Thus, the wiring passes through the wiring holes of the seal 856 and enters the space formed by the sealing cover 851 and the compressor main body 858, and then is electrically connected to the compressor energized part 857. In Figure 9 the structure shown, the seal 856 is sealed in the through hole 855, ensuring that electrically conductive substances such as moisture and foam are difficult to enter the above-mentioned space. Even though wiring holes are provided in the seal 856, since the wiring holes are small and there is wiring passing through, in fact, it is difficult for moisture and foam to enter the above-mentioned space via the wiring holes.

[0066] Regarding the structure of fastening the sealing cover 851 to the compressor main body 858, there is no particular limitation. For example, as Figure 8As shown, a threaded column 852 can be formed on the compressor main body 858, and a through hole for the threaded column 852 to pass through is formed on the sealing cover 851. The threaded column 852 is configured to protrude to a position outside the through hole after passing through the through hole. After the threaded column 852 passes through the through hole, the sealing cover 851 is fastened to the compressor main body 858 by screwing the nut 853 onto the threaded column 852. With such a structure, the sealing cover 851 can be reliably fastened to the compressor main body 858.

Claims

1. A heat pump system is used in connection with a drum for clothing treatment, and dries the clothes stored in the drum by using heated air. It is characterized in that: The heat pump system has: An air duct housing, which constitutes the housing of the heat pump system. An air duct is formed inside the air duct housing. The suction duct of the air duct housing communicates with one side of the drum, and the air outlet of the air duct housing communicates with the other side of the drum; A blower, which is arranged inside the air duct housing and is used to make air flow, so as to introduce the air in the drum into the air duct housing through the suction duct; An evaporator, which is arranged inside the air duct housing and dehumidifies the air introduced into the air duct housing; A condenser, which is arranged inside the air duct housing and is arranged at a position downstream of the evaporator in the air flow direction, and heats the air passing through the evaporator; And A compressor, which is arranged inside the air duct housing and compresses the refrigerant flowing in the evaporator and the condenser. At least a part of the compressor is exposed to the air duct, The compressor is formed by fastening a sealing cover to a compressor body. A compressor energized part is provided in the space formed by the sealing cover and the compressor body, The sealing cover has a through hole, and a seal is provided in the through hole in a sealed manner. A wiring hole corresponding to the wiring is provided in the seal for the wiring to pass through. The wiring is electrically connected to the compressor energized part.

2. The heat pump system according to claim 1, characterized in that: The sealing cover is fastened to the compressor body with a gasket interposed therebetween, When the sealing cover is projected onto the gasket, the sealing cover is included within the range of the gasket.

3. The heat pump system according to claim 1 or 2, characterized in that: A threaded column is formed on the compressor body, A through hole for the threaded column to pass through is formed on the sealing cover, After the threaded column passes through the through hole, a nut is used to threadedly engage with the threaded column to fasten the sealing cover to the compressor body.

4. A drum-type clothing treatment device is characterized in that: The drum-type clothing treatment device is equipped with the heat pump system according to any one of claims 1 to 3.

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