CN106852673B

CN106852673B - Heat pump type dish washing machine

Info

Publication number: CN106852673B
Application number: CN201510898310.4A
Authority: CN
Inventors: 胡小钦; 陈维德; 周栋; 尹斌
Original assignee: Sanhua Aweco Appliance Systems Wuhu Co Ltd
Current assignee: Three flower yaweike electric appliance (Wuhu) Co., Ltd.
Priority date: 2015-12-08
Filing date: 2015-12-08
Publication date: 2021-02-09
Anticipated expiration: 2035-12-08
Also published as: CN106852673A

Abstract

The invention discloses a heat pump type dish washing machine, comprising: a housing having a process chamber therein, the process chamber having a process chamber water outlet; a spray device for spraying washing water to wash dishes located in the processing chamber; the heat pump system comprises a compressor, a condenser, a throttling device and an evaporator which are connected with each other to form a refrigerant loop, and at least one part of the washing water flowing out of the water outlet of the treatment chamber is heated by the condenser and then is conveyed to the spraying device; and the first end of the bypass pipe is connected with the water outlet of the treatment chamber, the second end of the bypass pipe is connected with the spraying device, and the bypass pipe is provided with a flow control valve for regulating flow. The heat pump type dishwasher provided by the embodiment of the invention has the advantages of sufficient washing water flow and good washing effect.

Description

Heat pump type dish washing machine

Technical Field

The invention relates to the field of household appliances, in particular to a heat pump type dish washing machine.

Background

In the related art, water in a water collecting tank of a heat pump type dish washing machine is heated by a condenser of a heat pump system and then is sent to a spraying device by a circulating water pump. However, the washing effect is poor due to the limited flow of water after the condenser is heated.

In addition, the cooling path of the evaporator of the heat pump system is that after wind enters the shell from the front side of the dish washing machine, the wind exchanges heat with the evaporator and is discharged from the two sides of the dish washing machine. But the domestic dish washer that commonly uses will place inside the cupboard, adopts above-mentioned cooling method (front side air inlet and evaporimeter heat transfer, air-out from both sides again) can make the wind flow not smooth, influences the heat exchange efficiency of heat exchanger greatly to influence the reliability. Furthermore, the condenser of the conventional heat pump system requires a large space, resulting in a large volume of the dishwasher.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention provides the heat pump type dish washing machine which is sufficient in washing water flow and good in washing effect.

A heat pump dishwasher according to an embodiment of the present invention includes: a housing having a process chamber therein, the process chamber having a process chamber water outlet; a spray device for spraying washing water to wash dishes located in the processing chamber; the heat pump system comprises a compressor, a condenser, a throttling device and an evaporator which are connected with each other to form a refrigerant loop, and at least one part of the washing water flowing out of the water outlet of the treatment chamber is heated by the condenser and then is conveyed to the spraying device; and the first end of the bypass pipe is connected with the water outlet of the treatment chamber, the second end of the bypass pipe is connected with the spraying device, and the bypass pipe is provided with a flow control valve for regulating flow.

According to the heat pump type dish washing machine provided by the embodiment of the invention, the bypass pipe is arranged between the water outlet of the treatment chamber and the spraying device, so that a part of washing water can be directly guided to the spraying device without passing through the condenser, the water flow entering the spraying device in unit time is increased, the washing water quantity for spraying the tableware is sufficient, and the washing effect is good.

In addition, the flow control valve is arranged on the bypass pipe, so that the flow of the washing water entering the spraying device in unit time can be adjusted according to requirements.

In some preferred embodiments, the spraying device comprises a spraying pump and a spraying arm which is arranged in the treatment chamber and is connected with an outlet of the spraying pump, at least one part of the washing water flowing out of the water outlet of the treatment chamber enters the spraying pump after being heated by the condenser, and the second end of the bypass pipe is connected with the spraying pump.

In some preferred embodiments, the condenser is a double pipe heat exchanger, the double pipe heat exchanger includes an inner pipe and an outer pipe, an inner cavity of the inner pipe forms a washing water passage, a space between the outer pipe and the inner pipe forms a refrigerant passage, an inlet of the washing water passage is connected to the outlet of the treatment chamber, and an outlet of the washing water passage is connected to the spraying device.

In some preferred embodiments, a machine chamber located below the processing chamber is further disposed in the housing, the heat pump system is disposed in the machine chamber, an air inlet and an air outlet are disposed on a front surface of the machine chamber, and external air enters the machine chamber from the air inlet, exchanges heat with the evaporator, and is then discharged from the air outlet.

In some preferred embodiments, an air duct is disposed in the machine room, a first end of the air duct is connected to the air inlet, a second end of the air duct is connected to the air outlet, and the evaporator is disposed in the air duct.

In some preferred embodiments, an air duct housing is provided in the machine room, the air duct being defined by the air duct housing, the air duct housing being disposed at a front portion in the machine room.

In some preferred embodiments, the heat pump dishwasher further comprises a fan provided in the air duct at a downstream side of the evaporator to draw air in a direction from the evaporator to the fan.

In some preferred embodiments, the heat pump dishwasher further includes a drain pump, a drain hole for draining the condensed water of the evaporator is formed on an inner wall of the air duct, and the treatment chamber further has a drain port, and the drain pump is connected to the drain port and the drain hole.

In some preferred embodiments, the bottom of the treatment chamber is provided with a water collection tank, and the water outlet and the treatment chamber water outlet are arranged on the water collection tank.

In some preferred embodiments, two evaporator blocking ribs arranged at intervals are arranged on the bottom wall of the air duct, the evaporator is arranged between the two evaporator blocking ribs, and the drain hole is arranged between the two evaporator blocking ribs.

In some preferred embodiments, a filter screen is arranged at the air inlet.

In some preferred embodiments, the condenser is a double pipe heat exchanger disposed around the outside of the compressor with a thermal insulation layer interposed therebetween.

In some preferred embodiments, a processing chamber air outlet is arranged at the upper part of the processing chamber, a processing chamber air inlet is arranged at the lower part of the processing chamber, the processing chamber air inlet and the processing chamber air outlet are connected through a dehumidification air duct, and a dehumidification device is arranged in the dehumidification air duct.

In some preferred embodiments, the dehumidification device is a dehumidification evaporator.

In some preferred embodiments, the dehumidification evaporator and the evaporator are connected in parallel between a compressor of the heat pump system and the throttling device.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of a heat pump dishwasher in accordance with an embodiment of the present invention;

fig. 2 is a connection structure of a condenser of a heat pump dishwasher according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a heat pump dishwasher according to an embodiment of the present invention, looking down into the mechanical chamber from above;

FIG. 4 is a schematic diagram of a duct structure of a heat pump dishwasher according to an embodiment of the present invention, showing the installation positions of an evaporator and a fan;

fig. 5 is a schematic view of a duct structure of a heat pump dishwasher according to an embodiment of the present invention.

Reference numerals:

a heat pump type dishwasher 100;

a housing 1;

a processing chamber 11; a chamber outlet 111; a water collection sump 112; a water inlet 113; a drain port 114; a filter 115; a water pump 116; a processing chamber outlet 117; a process chamber inlet 118;

a machine room 12; an air inlet 121; an air outlet 122; an air duct 123; drain holes 1231; evaporator barrier ribs 1232; air duct barrier ribs 1233; an air duct case 124;

a spraying device 2; a spray pump 21; spray arm 22

A heat pump system 3; a compressor 31, a condenser 32, and a throttle device 33; an evaporator 34;

a bypass pipe 4; the flow control valve 41;

a fan 5; a filter screen 6; a dehumidification air duct 7 and a dehumidification device 71; a heat exchange chamber 711.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

A heat pump dishwasher 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 5.

As shown in fig. 1 to 3, a heat pump type dishwasher 100 according to an embodiment of the present invention includes: the spraying device comprises a shell 1, a spraying device 2, a heat pump system 3 and a bypass pipe 4.

The housing 1 has a processing chamber 11 therein, and dishes such as dishes, bowls, etc. to be washed are placed in the processing chamber 11. It will be appreciated that a rack or the like for supporting dishes may be provided in the processing compartment 11. The treatment chamber 11 has a treatment chamber water outlet 111, and the treatment chamber water outlet 111 is used for discharging the washing water after spraying and washing the dishes from the treatment chamber 11.

The spray device 2 is used to spray wash water into the processing chamber 11 to wash dishes located in the processing chamber 11.

The heat pump system 3 comprises a compressor 31, a condenser 32, a throttling device 33 and an evaporator 34 which are mutually connected to form a refrigerant loop, wherein the condenser 32 is used for heating washing water, and spraying is carried out on tableware after the washing water is heated by the condenser 32, so that the cleaning effect is good, and the efficiency is high.

At least a part of the washing water flowing out of the treatment chamber water outlet 111 is heated by the condenser 32 and then is delivered to the spraying device 2, a first end of the bypass pipe 4 is connected with the treatment chamber water outlet 111, a second end of the bypass pipe is connected with the spraying device 2, and the bypass pipe 4 is provided with a flow control valve 41 for adjusting the flow. That is, a part of the washing water flowing out of the treatment chamber water outlet 111 may flow to the condenser 32, be heated in the condenser 32, and then be transferred to the shower device 2; in addition, another part of the washing water flowing out of the chamber water outlet 111 may flow to the bypass pipe 4, and be guided to the shower device 2 through the bypass pipe 4. Thus, the heated washing water and the non-heated washing water are collected and introduced into the spray device 2, and sprayed from the spray device 2 to the dishes.

It can be understood that the conventional condenser 32 has a small internal volume due to the structural limitation, so that the washing water discharged from the outlet 111 of the processing chamber passes through the condenser 32 and then has a small flow area, and the flow rate drops suddenly, so that the flow rate of the washing water heated by the condenser 32 is limited, thereby resulting in a poor washing effect.

According to the heat pump dishwasher 100 of the embodiment of the present invention, the bypass pipe 4 is disposed between the treatment chamber water outlet 111 and the spray device 2, so that a part of the washing water can be directly guided to the spray device 2 without passing through the condenser 32, and the water flow rate per unit time entering the spray device 2 is increased, thereby the washing water amount for spraying the dishes is sufficient, and the washing effect is good.

Further, by providing the flow control valve 41 in the bypass pipe 4, the flow rate of the washing water entering the shower device 2 per unit time can be adjusted as necessary.

A heat pump dishwasher 100 according to a preferred embodiment of the present invention is described below with reference to fig. 1 to 5.

First, as shown in fig. 1, the heat pump dishwasher 100 according to the present embodiment includes a case 1, a shower device 2, a heat pump system 3, and a bypass pipe 4.

The housing 1 has a processing chamber 11 therein, the processing chamber 11 defining a chamber for washing dishes. The bottom of the processing chamber 11 is provided with a water collecting sump 112 for collecting the washing water in the processing chamber 11, for example, the washing water after washing dishes may be collected in the water collecting sump 112. The water collection tank 112 is provided with a water inlet 113, a water outlet 114 and a water outlet. The water inlet 113 is adapted to communicate with an external water source through a water inlet pipe to supply and supplement the washing water into the processing chamber 11, and a water inlet valve may be provided on the water inlet pipe to which the water inlet 113 is connected. A water pump 116 may be provided at the drain port 114 to drain the water in the water collection tank 112 to the outside. The water outlet is the water outlet 111 of the processing chamber. Preferably, the chamber outlet 111 is provided at the bottom of the chamber 11, that is, the chamber outlet 111 is provided at the bottom of the sump 112, whereby the washing water can be completely discharged from the chamber 11 and the circulation of the washing water can be more smoothly performed.

Preferably, as shown in fig. 1 and 2, a filter 115 may be provided at the outlet port to avoid clogging the condenser 32 and the bypass line 4.

Preferably, a filtering device may be disposed above the water collecting tank 112 so as not to block the water inlet 113, the water outlet 114, and the water outlet. In some embodiments, a sterilizing device, such as an ultraviolet sterilizing device, an ozone generating device, or the like, may be further disposed in the processing compartment 11 to sterilize the dishes.

As shown in fig. 1, the shower device 2 includes a shower pump 21 and a shower arm 22 provided in the process chamber 11 and connected to a water outlet of the shower pump 21. The spray arm 22 is disposed in the processing chamber 11, and in this embodiment, the spray arm 22 is provided in a plurality and spaced apart from each other in the up-down direction, and it is understood that the spray arm 22 has water spraying holes, and preferably, spray heads are disposed on the water spraying holes to increase the water flow speed and the water spraying area, thereby improving the cleaning effect. In the embodiment shown in fig. 1, three spray arms 22 are provided in the treatment chamber 11, and accordingly, brackets for supporting dishes are provided between adjacent spray arms 22, respectively, and different brackets may be provided for supporting different dishes, for example, an upper bracket for supporting dishes and a lower bracket for supporting bowls. As shown in fig. 1, the uppermost spray arm 22 sprays water downwardly and the lowermost spray arm 22 sprays water upwardly, although the middle spray arm 22 is shown as spraying water downwardly, alternatively, the middle spray arm 22 may spray water upwardly or both downwardly and upwardly.

Wherein, at least a part of the washing water flowing out from the water outlet 111 of the processing chamber is heated by the condenser 32 and then enters the spray pump 21, and the second end of the bypass pipe 4 is connected with the spray pump 21. That is, the washing water heated by the condenser 32 enters the inlet of the shower pump 21, and the other part of the washing water flowing through the bypass pipe 4 also enters the inlet of the shower pump 21, and is collected with the heated washing water and discharged to the shower arm 22 in the treatment chamber 11 by the shower pump 21.

As shown in fig. 1, the heat pump system 3 includes a compressor 31, a condenser 32, a throttle device 33, and an evaporator 34, which are connected to each other to constitute a refrigerant circulation circuit. The condenser 32 is used for heating the washing water, and it is understood that the condenser 32 may be provided at a lower portion of the processing chamber 11, for example, in the sump 112, alternatively, the condenser 32 may be attached to an outer bottom wall of the sump 112, or heat exchange pipes of the condenser 32 may be wound on an outer wall surface of the sump 112.

Preferably, the condenser 32 is a double pipe heat exchanger including an inner pipe and an outer pipe, an inner cavity of the inner pipe constitutes a washing water passage, a space between the outer pipe and the inner pipe constitutes a refrigerant passage, an inlet of the washing water passage is connected to the treatment chamber water outlet 111, and an outlet of the washing water passage is connected to the shower device 2.

It will be appreciated that the condenser 32 is not limited to a double pipe heat exchanger, for example, the condenser 32 may be a parallel flow heat exchanger provided in a tank having an inner chamber forming a washing water path, an inlet of the tank being connected to an outlet of the sump 112, and an outlet of the tank being connected to an inlet of the shower pump 21. In other words, as long as the condenser 32 can heat the washing water in the processing chamber 11, and the heated washing water is pumped to the spray arm 22 by the spray pump 21.

Referring to fig. 2, the hollow arrows in fig. 2 respectively indicate the flow direction of a portion of the washing water passing through the filter 115 and entering the washing water passage through the inner pipe of the condenser 32 for heat exchange, and the flow direction of another portion of the washing water passing through the bypass pipe 4, and the solid arrows in fig. 2 indicate the flow direction of the washing water flowing out of the water collection tank 112 to the space between the filters 115, and the flow direction of the two portions of the washing water merging at the inlet of the spray pump 21.

It is understood that the heat pump dishwasher 100 has a washing stage and a drying stage. During the washing phase, the washing water is sprayed in the processing chamber 11 to wash the dishes, at this time, a lot of moisture is formed in the processing chamber 11, and when the washing phase is finished, the heat pump dishwasher 100 may automatically enter the drying phase, or the user may switch to cause the heat pump dishwasher 100 to enter the drying phase. In the drying stage, the wet air in the processing chamber 11 is discharged from the processing chamber outlet 117, dried and dehumidified, and then returned to the processing chamber 11 through the processing chamber inlet 118, so that the dishes and the processing chamber 11 can be dehumidified and dried by the air with low humidity.

In the embodiment of the present invention, as shown in fig. 1, the processing chamber air outlet 117 is formed at the upper portion of the processing chamber 11, the processing chamber air inlet 118 may be formed at the lower portion of the processing chamber 11, and the humid air in the processing chamber 11 is discharged from the upper portion of the processing chamber 11, dehumidified by the dehumidifying device 71 in the dehumidifying air duct 7, and returned to the processing chamber 11 from the processing chamber air inlet 118 at the lower portion of the processing chamber 11, so as to perform mixed dehumidification in the processing chamber 11. Optionally, dehumidification air duct 7 is connected between process chamber air inlet 118 and process chamber air outlet 117. The dehumidification air duct 7 may be defined by the inner wall of the housing 1 of the heat pump dishwasher 100, or may be defined by a separate air duct 123 assembly.

In an alternative embodiment of the present invention, the dehumidifying device 71 is a dehumidifying evaporator, and the dehumidifying evaporator and the evaporator 34 are connected in parallel between the compressor 31 and the throttling device 33 of the heat pump system 3. That is to say, the dehumidification evaporator is internally circulated with a refrigerant, and the surface temperature of the dehumidification evaporator is low, so that the high-temperature and high-humidity air exchanges heat with the dehumidification evaporator, and the moisture in the dehumidification evaporator can be condensed out, and the purpose of dehumidification is achieved.

Or in another alternative embodiment of the present invention, as shown in fig. 1, the dehumidifying device 71 may also be a metal heat exchange plate, the heat exchange chamber 711 is surrounded by the metal heat exchange plate, the heat exchange chamber 711 is communicated with the inlet and the outlet of the dehumidifying air duct 7, the humid air is discharged from the processing chamber air outlet 117, enters the dehumidifying air duct 7, and flows to the heat exchange chamber 711, and the humid air in the heat exchange chamber 711 can exchange heat with air with lower outdoor temperature through the metal heat exchange plate, so as to achieve the purpose of dehumidification.

As shown in fig. 1, according to the heat pump dishwasher 100 of the embodiment of the present invention, the housing 1 is further provided with the machine chamber 12 below the processing chamber 11, the heat pump system 3 is provided in the machine chamber 12, that is, the heat pump system 3 is provided below the processing chamber 11, and the heat pump system 3 is configured below the processing chamber 11 due to the complicated structure of the heat pump system 3, so that the space occupation of the processing chamber 11 by the structure of the heat pump system 3 can be reduced. An air inlet 121 and an air outlet 122 are disposed on the front surface of the machine chamber 12, and external air enters the machine chamber 12 from the air inlet 121 and exchanges heat with the evaporator 34, and then is discharged from the air outlet 122.

The evaporator 34 exchanges heat with the outside air, and the heat pump dishwasher 100 according to the embodiment of the present invention, in comparison with the structure in which the outside air enters from the front surface of the cabinet 1 and is discharged from the side in the related art, the outside air enters from the front surface of the machine chamber 12 and is discharged from the front surface, so that it is possible to prevent a problem of poor heat exchange effect due to the limitation of the installation position of the heat pump dishwasher 100. That is, in practical use, the heat pump dishwasher 100 is usually installed in a cabinet, and the space in the cabinet is narrow, which is not beneficial for heat exchange of air, so that the heat exchange effect of the evaporator 34 can be optimized by disposing both the air inlet 121 and the air outlet 122 on the front surface of the machine room 12 according to the embodiment of the present invention.

Alternatively, the intake port 121 and the exhaust port 122 are spaced apart in the left-right direction. Preferably, the air inlet 121 may be disposed at a position adjacent to the left end or the right end of the housing, and correspondingly, the air outlet 122 may be disposed at a position adjacent to the right end or the left end of the housing, so that the positions of the air inlet 121 and the air outlet 122 are far away, thereby preventing the air inlet and the air outlet from affecting each other.

Preferably, as shown in fig. 3, at least one of the air inlet 121 and the air outlet 122 is provided with a filter screen 6. Preferably, the air inlet 121 is provided with a filter screen 6. More preferably, the filter screens 6 are disposed at the air inlet 121 and the air outlet 122, so that external impurities and the like can be prevented from entering the inside of the cabinet through the air inlet 121 or the air outlet 122, which is beneficial to cleaning the inside of the cabinet.

As shown in fig. 1, an air duct 123 for installing the evaporator 34 may be optionally disposed in the machine room 12, a first end of the air duct 123 is connected to the air inlet 121, a second end of the air duct 123 is connected to the air outlet 122, and the evaporator 34 is disposed in the air duct 123. The evaporator 34 can thus be separated from other components in the machine room 12, for example from the compressor 31, so that the heat exchange effect of the evaporator 34 can be ensured.

Alternatively, the evaporator 34 may be a fin type heat exchanger, or the evaporator 34 may also be a microchannel heat exchanger as long as the evaporator 34 can exchange heat with air.

As shown in fig. 1, the heat pump dishwasher 100 further includes a fan 5, and the fan 5 is provided in the wind tunnel 123 at a downstream side of the evaporator 34 to draw air in a direction from the evaporator 34 to the fan 5. Through the convulsions effect of fan 5, can make the distribution of the air current through evaporimeter 34 more even, the heat transfer effect of each part of evaporimeter 34 is more even, is favorable to the performance improvement of evaporimeter 34.

Advantageously, the surface of the evaporator 34 is spaced from the fan 5 by a predetermined distance, and if the distance between the evaporator 34 and the fan 5 is too short, wind may be concentrated and the performance of the evaporator 34 may not be fully exerted. Therefore, the surface of the evaporator 34 should be spaced from the fan by a distance of 50mm or more.

As shown in fig. 3, fig. 3 shows a structure of a machine chamber 12 of a heat pump dishwasher 100 according to an embodiment of the present invention, the machine chamber 12 is formed below a process chamber 11, and a heat pump system 3 is provided in the machine chamber 12. The evaporator 34 is disposed in an air duct 123 disposed in the machine room 12, the air inlet 121 and the air outlet 122 are formed on a front wall surface of the machine room 12, and the filter screens 6 are disposed at the air inlet 121 and the air outlet 122.

In fig. 3, the air inlet 121 is disposed adjacent to the right end of the machine chamber 12, the air outlet 122 is disposed adjacent to the left end of the machine chamber 12, air enters the air duct 123 from the air inlet 121 and is discharged from the air outlet 122 on the left side after exchanging heat with the evaporator 34, and the fan 5 is disposed on the downstream side of the evaporator 34 so as to draw air in the direction from the evaporator 34 to the fan 5, so that the air passing through the evaporator 34 is more uniform, and the heat exchange effect is better.

As shown in fig. 3, in order to save an installation space, it is preferable that the double pipe heat exchanger is disposed around the outside of the compressor 31 with a thermal insulation layer interposed between the double pipe heat exchanger and the compressor 31. Therefore, the arrangement of the space is more reasonable and simpler, and the heat dissipation can be reduced by arranging the heat insulation layer between the double-pipe heat exchanger and the compressor 31.

The minimum distance of the outside of the double pipe heat exchanger from the wind tunnel 123 and the water collection tank 112 is preferably greater than 15mm due to the vibration of the compressor 31, in order to prevent accidental impacts from damaging the machine.

In the embodiment of the invention, the compressor 31 is a horizontal compressor, the height of the compressor can be reduced by about 30-40% compared with the conventional vertical compressor 31, the weight can be reduced by 25-30%, the gravity center of the compressor 31 is reduced, and the vibration of a pipe can be relatively reduced, so that the noise of the whole machine is reduced. Of course, the present invention is not limited thereto, and the compressor 31 may be a small compressor with other structure, such as a vertical compressor, in order to reduce the space occupation.

Preferably, in order to ensure a better heat exchange effect of the condenser 32 around the outside of the compressor 31, the length of the double pipe heat exchanger is optionally set to be in the range of 1-1.5m, and preferably, the length of the double pipe heat exchanger may be designed to be 1.35m, thereby ensuring a heat exchange amount and reducing a space occupation. The diameter of the inner pipe of the double-pipe heat exchanger can be designed to be within the range of 10-20mm, and the diameter of the outer pipe can be designed to be within the range of 20-30 mm.

As shown in fig. 3-5, the air duct 123 is defined by an air duct casing 124, the air duct casing 124 is disposed at the front part in the machine room 12, and the compressor 31 and other heat pump structures are disposed at the left and right sides behind the air duct casing 124, respectively, so that the evaporator 34 can be mounted adjacent to the front wall of the machine room 12, and the structural arrangement is more reasonable. Of course, the present invention is not limited thereto, and the air path 123 may be constructed to be defined by the inner wall of the mechanism chamber 12.

Preferably, in order to collect the condensed water from the evaporator 34, a structure for collecting the condensed water may be provided in the air duct 123. As shown in fig. 5, the bottom wall of the air duct 123 is provided with spacing ribs, and a space for collecting condensed water is defined between the spacing ribs. Specifically, the bottom wall of the air duct 123 is provided with two evaporator blocking ribs 1232 arranged at intervals, the evaporator 34 is disposed between the two evaporator blocking ribs 1232, and a drain hole 1231 is disposed between the two evaporator blocking ribs 1232, where the drain hole 1231 is used for draining the condensed water of the evaporator 34.

Through setting up and separating the fender muscle, not only can play the effect of compiling to the comdenstion water, can play spacing effect to the installation of evaporimeter 34 moreover, can make the mounted position of evaporimeter 34 more accurate from this.

In the same way, in order to optimize the mounting structure of the fan 5, the bottom wall of the air duct 123 can be further provided with two air duct blocking ribs 1233, and the fan 5 is arranged between the two air duct blocking ribs 1233, so that the fan 5 can be mounted in a limiting manner.

Preferably, the drain hole 1231 is formed on the bottom wall of the air duct 123, so that the condensed water can be discharged as completely as possible without remaining. Preferably, the heat pump dishwasher 100 further includes a drain pump (not shown) connected to the drain port 114 of the treating chamber 11 and the drain hole 1231 in the wind tunnel 123, that is, by providing the drain pump so that the condensed water of the evaporator 34 can be guided into the treating chamber 11 and mixed with the washing water in the treating chamber 11, so that the circulation of the washing water can be participated, whereby resources can be saved and waste of water resources can be prevented.

As described above, the drain port 114 is formed on the sump 112, that is, the condensed water of the evaporator 34 is directly introduced into the sump 112 by the driving of the drain pump, thereby being mixed with the washing water in the sump 112.

In summary, the heat pump dishwasher 100 according to the embodiment of the present invention has at least the following advantages:

1. by arranging the bypass pipe 4, the flow of the washing water can be adjusted, the flow of the washing water is sufficient, and the washing effect is good;

2. the air used for exchanging heat with the evaporator 34 is exhausted smoothly, and the heat exchange effect of the evaporator 34 is good;

3. the condenser 32 is a double pipe heat exchanger, and the double pipe heat exchanger surrounds the outside of the compressor 31, so that space occupation can be reduced.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A heat pump dishwasher, comprising:

a housing having a process chamber therein, the process chamber having a process chamber water outlet;

a spray device for spraying washing water to wash dishes located in the processing chamber;

the heat pump system comprises a compressor, a condenser, a throttling device and an evaporator which are connected with each other to form a refrigerant loop, at least one part of washing water flowing out of a water outlet of the treatment chamber is heated by the condenser and then is conveyed to the spraying device, the condenser is a double-pipe heat exchanger, the double-pipe heat exchanger is arranged outside the compressor in a surrounding mode, and a heat insulation layer is arranged between the double-pipe heat exchanger and the compressor;

the first end of the bypass pipe is connected with the water outlet of the treatment chamber, the second end of the bypass pipe is connected with the spraying device, a flow control valve for adjusting the flow is arranged on the bypass pipe, and the bypass pipe can directly guide a part of washing water to the spraying device without passing through the condenser so as to increase the flow of water entering the spraying device in unit time;

the shell is internally provided with a mechanical chamber positioned below the treatment chamber, an air channel is arranged in the mechanical chamber, the evaporator is arranged in the air channel, the inner wall of the air channel is provided with a drain hole for draining condensed water of the evaporator, the bottom wall of the air channel is provided with two evaporator blocking ribs which are arranged at intervals, the evaporator is arranged between the two evaporator blocking ribs, and the drain hole is arranged between the two evaporator blocking ribs;

and the fan is arranged in the air duct and is positioned on the downstream side of the evaporator.

2. A heat pump dishwasher according to claim 1, wherein the spray means comprises a spray pump and a spray arm disposed within the treatment chamber and connected to an outlet of the spray pump, wherein at least a portion of the washing water flowing out of the treatment chamber outlet is heated by the condenser and enters the spray pump, and wherein the second end of the bypass pipe is connected to the spray pump.

3. A heat pump dishwasher according to claim 1, wherein the condenser is a double pipe heat exchanger comprising an inner pipe and an outer pipe, an inner cavity of the inner pipe constituting a washing water passage, a space between the outer pipe and the inner pipe constituting a refrigerant passage, an inlet of the washing water passage being connected to the treatment chamber water outlet and an outlet of the washing water passage being connected to the shower device.

4. A heat pump dishwasher according to any one of claims 1 to 3, wherein the heat pump system is provided in the machine chamber, a front surface of the machine chamber is provided with an air inlet and an air outlet, and external air is introduced into the machine chamber from the air inlet and is discharged from the air outlet after exchanging heat with the evaporator.

5. A heat pump dishwasher according to claim 4, wherein the first end of the air duct is connected to the air inlet and the second end is connected to the air outlet.

6. A heat pump dishwasher according to claim 5, characterized in that the machine chamber is provided with an air duct housing, the air duct being defined by the air duct housing, the air duct housing being arranged at a front portion within the machine chamber.

7. A heat pump dishwasher according to claim 5, wherein the fan draws air in a direction from the evaporator to the fan.

8. A heat pump dishwasher according to claim 1, characterized in that a sump is provided at a bottom of the treatment chamber, the drain opening and the treatment chamber water outlet being provided at the sump.

9. A heat pump dishwasher according to any one of claims 5 to 8, characterized in that a filter screen is provided at the air inlet.

10. A heat pump dishwasher according to claim 1, wherein the treatment chamber is provided with a treatment chamber air outlet at an upper portion thereof and a treatment chamber air inlet at a lower portion thereof, the treatment chamber air inlet and the treatment chamber air outlet being connected by a dehumidification air duct, the dehumidification air duct being provided with a dehumidification device therein.

11. A heat pump dishwasher according to claim 10, wherein the dehumidifying device is a dehumidifying evaporator.

12. A heat pump dishwasher according to claim 11, wherein the dehumidifying evaporator and the evaporator are connected in parallel between a compressor of the heat pump system and the throttling device.