Cooling system for heat pump cleaning apparatus and heat pump cleaning apparatus

Abstract

The present disclosure relates to a cooling system of a heat pump type cleaning device and the heat pump type cleaning device, and relates to the technical field of cleaning devices. The cooling system comprises a liquid tank, which is internally provided with a partition plate, and comprises a first liquid inlet, a first liquid outlet, and a first flow channel and a second flow channel which are separated by the partition plate and are connected at one end of the partition plate, wherein the first flow channel is connected with the first liquid inlet, and the second flow channel is connected with the first liquid outlet; a first wall type heat exchanger, which comprises a first hot side channel and a first cold side channel, wherein one end of the first hot side channel is connected with the first liquid outlet, and the first cold side channel is configured to be connected in a circulating loop of a heat pump system of the heat pump type cleaning device and to serve as an evaporative element; a connecting pipeline which connects the other end of the first hot side channel with the first liquid inlet; and a first circulating pump which is arranged on the connecting pipeline. The cooling system provided by the present disclosure can improve the energy efficiency of the heat pump type cleaning device.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of cleaning equipment, in particular to a cooling system of a heat pump type cleaning equipment and the heat pump type cleaning equipment. BACKGROUND

[0002] A dishwasher is a cleaning equipment for automatically cleaning dishes, chopsticks, plates, dishes, knives, forks and other tableware, and is commonly used in restaurants, hotels, canteens and other places. Compared with manual cleaning, it can greatly reduce labor intensity and improve cleaning efficiency and effect. At present, various small dishwashers have gradually entered families and are favored by more consumers.

[0003] A heat pump type dishwasher generally comprises a heat pump system, a spraying system and a cooling system. The heat pump system heats the washing water through a condenser. The spraying system sprays the heated washing water to the tableware containing cavity of the dishwasher through a spraying device. The washing water falling on the bottom of the tableware containing cavity can flow into the pipeline of the spraying system again after being filtered. By this cycle, the cleaning of the tableware placed in the tableware containing cavity can be realized. The cooling system is used for heat exchange with the evaporator in the heat pump system to take away the cold energy generated by the evaporator. The cooling system in the related art generally adopts an air-cooled cooling system.

[0004] How to improve the energy efficiency of heat pump type cleaning equipment such as heat pump type dishwasher has been the research focus of the technical personnel in the field. SUMMARY

[0005] The present disclosure aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present disclosure is to provide a cooling system of a heat pump type cleaning equipment and a chassis assembly, and a heat pump type cleaning equipment, so as to improve the energy efficiency of the heat pump type cleaning equipment.

[0006] The cooling system of the heat pump type cleaning equipment according to one embodiment of the present disclosure comprises: a liquid tank, which is internally provided with a partition plate and comprises a first liquid inlet, a first liquid outlet, and a first flow channel and a second flow channel separated by the partition plate and connected at one end of the partition plate, wherein the first flow channel communicates with the first liquid inlet, and the second flow channel communicates with the first liquid outlet; a first wall-type heat exchanger, which comprises a first hot-side channel and a first cold-side channel, wherein one end of the first hot-side channel communicates with the first liquid outlet, and the first cold-side channel is configured to be connected in a circulating loop of a heat pump system of the heat pump type cleaning equipment and serve as an evaporative element; and a connecting pipeline connecting the other end of the first hot-side channel and the first liquid inlet, and a first circulating pump provided on the connecting pipeline.

[0007] The cooling system according to the above-mentioned embodiments of the present disclosure takes away the cold energy generated by the heat pump system through a liquid cooling mode, and has lower energy consumption and smaller working noise of the circulating pump than the air cooling solution in the related art, and thus can improve the energy efficiency of the heat pump type cleaning equipment and reduce the working noise thereof. In addition, the placement or installation of the heat pump type cleaning equipment does not need to consider the in-out of the air cooling airflow, and thus the heat pump type cleaning equipment can be designed to be compact, and is more suitable for an embedded design of being embedded in a wall or a cooking bench.

[0008] In addition, the cooling system according to the above-mentioned embodiments of the present disclosure provides a relatively long circulation path for the cooling liquid by using the limited internal space of the liquid tank, and thus can accelerate the heat exchange efficiency of the first partition wall type heat exchanger, that is, accelerate the dissipation of the cold energy, and thus can significantly improve the energy efficiency of the heat pump type cleaning equipment.

[0009] The cooling system according to the above-mentioned embodiments of the present disclosure can also have any one or a combination of any multiple of the following additional technical features:

[0010] According to an embodiment of the cooling system of the present disclosure, the liquid tank has an open loop shape.

[0011] The liquid tank is designed to have an open loop shape, and the partition plate is arranged therein and separates the internal space of the liquid tank into the first flow channel and the second flow channel, so that a longer circulation path can be provided for the cooling liquid, thereby further accelerating the dissipation of the cold energy and improving the energy efficiency of the heat pump type cleaning equipment. In addition, the internal region and the open region of the open loop shape can be used to arrange other components of the heat pump type cleaning equipment, thereby improving the space utilization and making the structure of the space occupied by the liquid tank more compact.

[0012] According to an embodiment of the cooling system of the present disclosure, the liquid tank includes a top plate, a bottom plate, and an inner side plate, an outer side plate, a first end plate and a second end plate connected between the top plate and the bottom plate, and includes a first surrounding section, a second surrounding section, a third surrounding section and a fourth surrounding section connected in sequence, wherein the first surrounding section includes the first end plate, and the fourth surrounding section includes the second end plate.

[0013] According to an embodiment of the cooling system of the present disclosure, the partition plate is located in the third surrounding section and the fourth surrounding section and connected with the top plate, the bottom plate and the inner side plate respectively, and has a gap between the partition plate and the second end plate.

[0014] The above-mentioned liquid tank has a small overall occupied space, but can fully utilize the internal space of the liquid tank to provide a longer circulation path for the cooling liquid, and the area of the first flow channel for heat conduction with the outside of the liquid tank is also large, and thus the heat exchange efficiency is higher, and the energy efficiency of the heat pump type cleaning equipment can be further improved.

[0015] According to the cooling system of one embodiment of the present disclosure, the first liquid outlet is located at the intersection of the second surrounding section and the third surrounding section and faces the third surrounding section, and the first liquid inlet is located at the first surrounding section and faces away from the second surrounding section, the third surrounding section and the fourth surrounding section, and the first liquid outlet and the first liquid inlet are diagonally arranged.

[0016] The first liquid outlet and the first liquid inlet are diagonally arranged, so that the circulation path of the cooling liquid is further lengthened.

[0017] According to the cooling system of one embodiment of the present disclosure, the connecting pipeline and the first circulating pump are arranged at the side of the first surrounding section facing away from the second surrounding section, the third surrounding section and the fourth surrounding section.

[0018] According to the cooling system of one embodiment of the present disclosure, the first partition wall heat exchanger is arranged at the outer side of the bottom of the second surrounding section.

[0019] In the above embodiment, the arrangement positions of the first circulating pump and the first partition wall heat exchanger make the structure of the cooling system more compact, so that the cooling system occupies less space in the heat pump cleaning device.

[0020] According to the cooling system of one embodiment of the present disclosure, the bottom of the second surrounding section is bent to form a containing space of the first partition wall heat exchanger. This design makes the structure of the cooling system compact and neat.

[0021] According to the cooling system of one embodiment of the present disclosure, the cooling system further comprises a heater arranged in the second flow channel.

[0022] According to the cooling system of one embodiment of the present disclosure, the heater is configured to start heating when the temperature of the cooling liquid in the liquid tank is lower than a first temperature threshold, and / or start heating intermittently according to a set heating duration and a set heating frequency when the temperature of the cooling liquid in the liquid tank is not less than a second temperature threshold and not greater than a third temperature threshold.

[0023] When the heater is working, on the one hand, it can prevent the cooling liquid from becoming poor in flowability, and on the other hand, it can form the non-uniformity of the temperature of the cooling liquid in the liquid tank, so that the cooling liquid with a higher temperature always enters the first hot side channel first to exchange heat with the evaporative element, so as to further improve the heat exchange efficiency. Therefore, this design can improve the reliability and environmental adaptability of the heat pump cleaning device when working, that is, even in the cold northern winter, the heat pump cleaning device can still operate normally and efficiently.

[0024] According to the cooling system of one embodiment of the present disclosure, the first partition wall heat exchanger comprises a tubular heat exchanger, a jacketed heat exchanger, an immersion coil heat exchanger, a jacketed heat exchanger or a plate heat exchanger.

[0025] The cooling system according to one embodiment of the present disclosure further comprises a cooling liquid flowing into the cooling system, and the cooling liquid comprises at least one of water, glycerol and ethylene glycol.

[0026] The chassis assembly of the heat pump type cleaning device according to one embodiment of the present disclosure comprises a chassis body and the cooling system according to any one of the above embodiments fixed above the chassis body.

[0027] The chassis assembly of the heat pump type cleaning device according to the above embodiments of the present disclosure has a compact structure and occupies a small space. Since the heat exchange efficiency of the cooling system is high, the energy efficiency of the heat pump type cleaning device can be significantly improved, and the working noise is small.

[0028] The chassis assembly of the heat pump type cleaning device according to the above embodiments of the present disclosure can further have any one or a combination of any number of the following additional technical features:

[0029] The chassis assembly of the heat pump type cleaning device according to one embodiment of the present disclosure further comprises a compressor, a second inter-wall heat exchanger, a throttling device and a second circulating pump fixed above the chassis body, wherein the second inter-wall heat exchanger comprises a second cold side channel and a second hot side channel as a condensing element; the compressor, the second hot side channel of the second inter-wall heat exchanger, the throttling device and the first cold side channel of the first inter-wall heat exchanger are connected in sequence through a pipeline to form a closed loop, thereby forming a circulating loop of the heat pump system; the second circulating pump and the second cold side channel of the second inter-wall heat exchanger are configured to be connected in the spraying system of the heat pump type cleaning device; and the outer shape of the liquid tank is in the shape of an open ring surrounding the compressor, the second inter-wall heat exchanger, the throttling device and the second circulating pump.

[0030] The chassis assembly of the heat pump type cleaning device according to one embodiment of the present disclosure further comprises a water cup fixed above the chassis body and surrounded by the liquid tank, and the water cup comprises a water inlet and a backwater filtering port.

[0031] This embodiment makes full use of the internal area of the open ring shape of the liquid tank, so that the structure of the chassis assembly is more compact and occupies a smaller space, thereby being more conducive to realizing the miniaturization design of the heat pump type cleaning device. Since the chassis assembly occupies a smaller space, the volume of the cleaning object containing cavity of the heat pump type cleaning device can be appropriately expanded, thereby improving the cleaning capacity.

[0032] The heat pump type cleaning device according to one embodiment of the present disclosure comprises the chassis assembly according to any one of the above embodiments.

[0033] The heat pump type cleaning device has high energy efficiency and low working noise. In addition, the placement or installation of the heat pump type cleaning device does not need to consider the inflow and outflow of air cooling air flow, and is more suitable for embedded design embedded in a wall or a cooking bench.

[0034] A heat pump cleaning apparatus according to one embodiment of the present disclosure includes a heat pump dishwasher. In one embodiment, the heat pump cleaning apparatus is a built-in dishwasher that can be installed under a kitchen counter, providing utility and aesthetics. BRIEF DESCRIPTION OF DRAWINGS

[0035] In the drawings, like reference numerals are used to indicate like parts throughout the various figures. The drawings are not necessarily to scale, the emphasis instead being placed upon illustrating the principles of the application. It should be understood that the drawings are merely schematic and that the application can be embodied in many different forms.

[0036] Figure 1 A structural diagram of a heat pump cleaning apparatus according to some exemplary embodiments of the present disclosure is shown;

[0037] Figure 2 A perspective view of a cooling system according to some exemplary embodiments of the present disclosure is shown;

[0038] Figure 3 A perspective view of a cooling system according to some exemplary embodiments of the present disclosure is shown;

[0039] Figure 4 A bottom view of a cooling system according to some exemplary embodiments of the present disclosure is shown;

[0040] Figure 5 A front view of a cooling system according to some exemplary embodiments of the present disclosure is shown;

[0041] Figure 6 A perspective view of a cooling system according to some exemplary embodiments of the present disclosure is shown;

[0042] Figure 7 A perspective view of a cooling system according to some exemplary embodiments of the present disclosure is shown; Figure 5 A top view of a cooling system according to some exemplary embodiments of the present disclosure is shown;

[0043] Figure 8 A perspective view of a chassis assembly according to some exemplary embodiments of the present disclosure is shown; and

[0044] Figure 9 A perspective view of a chassis assembly according to some exemplary embodiments of the present disclosure is shown.

[0045] BRIEF DESCRIPTION OF DRAWINGS

[0046] 1 - heat pump cleaning apparatus; 10 - chassis assembly; 11 - cooling system; 13 - heat pump system;

[0047] 15 - spray system; 111 - liquid tank; 112 - partition; 13 - first liquid inlet;

[0048] 114 - first liquid outlet; 115 - first flow channel; 116 - second flow channel; 117 - first plate heat exchanger;

[0049] 118 - connecting pipeline; 119 - first circulating pump; 111a - top plate; 111b - bottom plate;

[0050] 111c - inner side plate; 111d - outer side plate; 111e - first end plate; 111f - second end plate;

[0051] 1111 - first circumferential section; 1112 - second circumferential section; 1113 - third circumferential section; 1114 - fourth circumferential section;

[0052] 120 - heater; 12 - base body; 101 - compressor; 102 - second plate heat exchanger;

[0053] 103 - throttling device; 104 - second circulating pump; 105 - evaporation element; 106 - condensation element;

[0054] 151 - water cup; 152 - water inlet; 153 - backwater filtering port; 154 - spray arm;

[0055] 155 - spray port; 30 - pipeline; 156 - cleaning object accommodating cavity. DETAILED DESCRIPTION

[0056] Hereinafter, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0057] The heat pump system, the spraying system and the cooling system are three main working systems of the heat pump dishwasher. The heat pump system is used to heat the washing water in the spraying system. The spraying system can spray the heated washing water to the cleaning object accommodating cavity of the heat pump dishwasher to clean the tableware in the cleaning object accommodating cavity. The cooling system is used to take away the cold produced by the working of the heat pump system. The heat pump system generally comprises a compressor, a condenser, a throttling device and an evaporator in sequence through a pipeline in a closed loop. The working principle of the heat pump system is that the compressor converts the low-pressure refrigerant vapor from the evaporator into high-temperature and high-pressure refrigerant vapor; the condenser condenses the high-temperature and high-pressure refrigerant vapor into liquid, and the refrigerant releases heat in the condensation process, thereby heating the washing water which exchanges heat with the condenser; the throttling device throttles the high-pressure refrigerant liquid discharged from the condenser to convert it into low-temperature and low-pressure refrigerant liquid suitable for evaporation; the low-temperature and low-pressure refrigerant liquid is evaporated in the evaporator to convert it into low-pressure refrigerant vapor.

[0058] In related technologies, heat pump dishwashers typically use air-cooled cooling systems. These systems rely on airflow from a fan to exchange heat with the evaporator, thus removing the evaporator's cooling capacity. This not only results in high energy consumption but also causes significant noise during operation. Furthermore, air-cooling requires the design of specific airflow channels, leading to a larger size for heat pump dishwashers and limiting their application scenarios.

[0059] To address the aforementioned technical problems, this disclosure provides a cooling system and chassis assembly for a heat pump cleaning device, which can improve the energy efficiency of heat pump cleaning devices such as heat pump dishwashers.

[0060] In the embodiments disclosed herein, the specific product type of the heat pump cleaning equipment is not limited to a heat pump dishwasher; for example, it could also be a heat pump laundry detergent or other cleaning equipment for cleaning purposes. Some embodiments shown in the accompanying drawings are merely illustrative examples of heat pump dishwashers.

[0061] like Figure 1 The diagram shown is a schematic representation of the structure of a heat pump cleaning device 1, which is an exemplary embodiment of this disclosure. This heat pump cleaning device 1 is, for example, a heat pump dishwasher, and its main structure includes a cooling system 11, a heat pump system 13, and a spray system 15.

[0062] The cooling system 11 includes a liquid tank 111, a hot-side channel of a first indirect heat exchanger 117 (i.e., the first hot-side channel in the following embodiment), and a first circulating pump 119 arranged sequentially. When the cooling system 11 is in operation, it removes the cooling energy generated by the heat pump system 13 through the first indirect heat exchanger 117. The specific structure of the cooling system 11 will be described in further detail in the following embodiment.

[0063] The circulation loop of the heat pump system 13 includes a compressor 101, a hot-side passage of a second indirect heat exchanger 102 (i.e., the second hot-side passage in the following embodiment), a throttling device 103, and a cold-side passage of a first indirect heat exchanger 117 (i.e., the first cold-side passage in the following embodiment), arranged sequentially. The cold-side passage of the first indirect heat exchanger 117 serves as an evaporator 105, and the hot-side passage of the second indirect heat exchanger 102 serves as a condenser 106. The heat pump system 13 heats the washing water in the spray system 15 through the second indirect heat exchanger 102.

[0064] The specific structural form of the sprinkler system 15 is not limited. Figure 1 In the illustrated embodiment, the spray system 15 includes a cold-side passage of a second partition heat exchanger 102 (i.e., the second cold-side passage in the following embodiment), a second circulation pump 104, a spray device (including a spray arm 154 and nozzles 155 on the spray arm 154), and a water cup (not shown in the figure).

[0065] The heated washing water can be sprayed to the washing object accommodating cavity 156 of the heat pump dishwasher through the spraying device. The washing water flows into the water cup at the bottom of the washing object accommodating cavity 156, and after filtration, can be heated again by the heat pump system 13 in the spraying system 15.

[0066] The cooling system 11 of some embodiments of the present disclosure will be described in detail below in combination with the drawings. The cooling system 11 is used in, for example Figure 1 the heat pump cleaning equipment 1 shown.

[0067] Figure 2 A perspective view of the cooling system according to some example embodiments of the present disclosure is shown, Figure 3 A perspective view of the cooling system according to some example embodiments of the present disclosure is shown, Figure 4 A bottom view of the cooling system according to some example embodiments of the present disclosure is shown, Figure 5 A front view of the cooling system according to some example embodiments of the present disclosure is shown, Figure 6 A perspective view of the cooling system according to some example embodiments of the present disclosure is shown, Figure 7 A perspective view of the cooling system according to some example embodiments of the present disclosure is shown, Figure 5 A top view of the cooling system of the embodiment shown is shown after being cut along A-A.

[0068] As Figures 1 to 7 shown, the cooling system 11 includes a liquid tank 111, a first wall-type heat exchanger 117, a first circulating pump 119, and some connecting pipelines 118.

[0069] As Figure 7 shown, the inside of the liquid tank 111 is provided with a partition plate 112, and the liquid tank 111 includes a first liquid inlet 113, a first liquid outlet 114, and a first flow channel 115 and a second flow channel 116 separated by the partition plate 112 and connected in communication at one end of the partition plate 112. The first flow channel 115 is connected to the first liquid inlet 113, and the second flow channel 116 is connected to the first liquid outlet 114. The flow of the cooling liquid in the first flow channel 115 is shown by the solid arrows in the figure, and the flow of the cooling liquid in the second flow channel 116 is shown by the dashed arrows in the figure.

[0070] The first wall-type heat exchanger 117 includes a first hot side channel and a first cold side channel, wherein one end of the first hot side channel is connected to the first liquid outlet 114, and the first cold side channel is configured to be connected in the circulating loop of the heat pump system 13 of the heat pump cleaning equipment 1 and serve as the evaporating element 105. The wall-type heat exchanger is characterized in that the cold and hot fluids are separated by a solid wall and do not mix, and heat exchange is performed through the solid wall. For the wall-type heat exchanger, the side channel with a higher fluid temperature is defined as the hot side channel, and the side channel with a lower fluid temperature is defined as the cold side channel.

[0071] The connecting pipeline 118 connects the other end of the first hot-side channel and the first liquid inlet 113, and the first circulating pump 119 is arranged on the connecting pipeline 118.

[0072] The first flow channel 115, the second flow channel 116, the first hot-side channel of the first wall-type heat exchanger 117, and the first circulating pump 119 are sequentially connected in a closed loop, thereby forming a circulating loop of the cooling liquid, that is, a circulating loop of the cooling system 11. The first circulating pump 119 provides driving force for the flow of the cooling liquid. The cooling liquid flowing in the circulating loop is also referred to as antifreezing cooling liquid, and the composition of the cooling liquid can include at least one of water, glycerol, and ethylene glycol. For example, the cooling liquid can be water, or a mixture of water and ethylene glycol, and the like.

[0073] In the embodiment of the present disclosure, the cooling liquid can be pre-filled in the circulating loop of the cooling system 11 by the manufacturer, and in addition, the user can also select a cooling liquid with a certain composition and fill it into the circulating loop of the cooling system 11 according to the needs. Therefore, the cooling system 11 can include or not include the cooling liquid.

[0074] In the embodiment of the present disclosure, as shown in Figure 1 The first cold-side channel of the first wall-type heat exchanger 117 is configured to be connected in the heat pump system 13 of the heat pump type cleaning device 1 and serve as the evaporating element 105, in which the flowing refrigerant absorbs heat to generate cold energy when evaporating, thereby causing the surrounding temperature to decrease. The cooling liquid flowing in the first hot-side channel of the first wall-type heat exchanger 117 has a higher temperature than the refrigerant, and thus exchanges heat with the refrigerant through the wall, so that the cold energy is dissipated to the surrounding environment of the cleaning device along with the circulating loop of the cooling system 11.

[0075] The embodiment of the present disclosure adopts a liquid cooling mode to take away the cold energy generated by the heat pump system 13. Compared with the air cooling scheme in the related art, the energy consumption of the circulating pump is lower, and the working noise is smaller, so that the energy efficiency of the heat pump type cleaning device 1 can be improved, and the working noise thereof can be reduced. In addition, the placement or installation of the heat pump type cleaning device 1 does not need to consider the inflow and outflow of the air cooling air flow, so that the compact design of the heat pump type cleaning device 1 can be realized, and the heat pump type cleaning device 1 is more suitable for the embedded design of being embedded in a wall or a cooking bench.

[0076] In the embodiments of the present disclosure, the inside of the liquid tank 111 is separated into a first flow channel 115 and a second flow channel 116 by a partition plate 112, and the first flow channel 115 and the second flow channel 116 can be regular or irregular in shape. Since the first flow channel 115 and the second flow channel 116 are connected at one end of the partition plate 112, when the cooling liquid flows in the first flow channel 115 to the end of the first flow channel 115 (i.e., one end of the partition plate 112), the cooling liquid will flow into the second flow channel 116 and flow in the opposite direction, and then enter the first hot-side channel of the first wall-type heat exchanger 117. This design uses the limited internal space of the liquid tank 111 to provide a relatively long circulation path for the cooling liquid, thereby accelerating the heat exchange efficiency of the first wall-type heat exchanger 117, i.e., accelerating the dissipation of cold energy, and thus significantly improving the energy efficiency of the heat pump type cleaning equipment 1.

[0077] As shown in Figure 2 , in some embodiments of the present disclosure, the outer shape of the liquid tank 111 is in the shape of an open ring, specifically in the shape of a rectangular open ring, and the structure includes a top plate 111a, a bottom plate 111b, and an inner side plate 111c, an outer side plate 111d, a first end plate 111e, and a second end plate 111f connected to the top plate 111a and the bottom plate 111b.

[0078] The overall structure of the liquid tank 111 includes a first surrounding section 1111, a second surrounding section 1112, a third surrounding section 1113, and a fourth surrounding section 1114 connected in sequence. The first surrounding section 1111 includes the first end plate 111e, and the fourth surrounding section 1114 includes the second end plate 111f, i.e., the first end plate 111e serves as an end plate of the first surrounding section 1111, and the second end plate 111f serves as an end plate of the fourth surrounding section 1114.

[0079] The outer shape of the liquid tank 111 is designed in the shape of an open ring, and the partition plate 112 is arranged therein and separates the inside of the liquid tank 111 into the first flow channel 115 and the second flow channel 116, which can provide a longer circulation path for the cooling liquid, thereby further accelerating the dissipation of cold energy and improving the energy efficiency of the heat pump type cleaning equipment 1. In addition, as shown in Figure 8 and Figure 9 , the internal area and the open area of the open ring shape can be used to arrange other components of the heat pump type cleaning equipment 1, such as the compressor 101, the second wall-type heat exchanger 102, the throttling device 103, the second circulating pump 104 of the aforementioned spray system 15, some pipelines, and the water cup 151, etc., thereby improving the space utilization and making the structure of the space occupied by the liquid tank 111 more compact.

[0080] As shown in Figure 6 and Figure 7As shown, in these embodiments, the partition plate 112 is located within the third surrounding section 1113 and the fourth surrounding section 1114 and connected with the top plate 111a, the bottom plate 111b and the inner side plate 111c respectively, and has a gap between the partition plate 112 and the second end plate 111f. The first flow channel 115 is formed by the internal space of the first surrounding section 1111, the internal space of the second surrounding section 1112, the internal space of the third surrounding section 1113 and the fourth surrounding section 1114 on the side of the partition plate 112 facing away from the inner side plate 111c. The second flow channel 116 is formed by the internal space of the third surrounding section 1113 and the fourth surrounding section 1114 on the side of the partition plate 112 facing the inner side plate 111c.

[0081] After the cooling liquid enters the first flow channel 115 from the first liquid inlet 113, it is diverted into the second flow channel 116 from the gap between the partition plate 112 and the second end plate 111f, and then enters the first hot-side passage of the first wall-type heat exchanger 117 from the first liquid outlet 114. After heat exchange with the refrigerant in the first cold-side passage, the cooling liquid enters the liquid tank 111 again through the connecting pipeline 118 and the first circulating pump 119. The cold energy generated by the heat pump system 13 is dissipated to the surrounding environment through the liquid tank 111 as the cooling liquid circulates in the liquid tank 111. This design of the liquid tank 111 occupies less overall space, but makes full use of the internal space of the liquid tank 111 to provide a longer circulation path for the cooling liquid. Moreover, the area of the first flow channel 115 that conducts heat with the outside of the liquid tank 111 is larger, so the heat exchange efficiency is higher, and the energy efficiency of the heat pump type cleaning equipment 1 can be further improved.

[0082] As shown in FIGS. 1 and 2, Figure 3 and Figure 7 The first liquid outlet 114 is located at the intersection of the second surrounding section 1112 and the third surrounding section 1113 and faces the third surrounding section 1113, and the first liquid inlet 113 is located at the first surrounding section 1111 and faces away from the second surrounding section 1112, the third surrounding section 1113 and the fourth surrounding section 1114. The first liquid outlet 114 and the first liquid inlet 113 are diagonally arranged, i.e., the first liquid outlet 114 and the first liquid inlet 113 are arranged at opposite corners of the liquid tank 111 in an open loop shape. The connecting pipeline 118 and the first circulating pump 119 are arranged on the side of the first surrounding section 1111 facing away from the second surrounding section 1112, the third surrounding section 1113 and the fourth surrounding section 1114. The first wall-type heat exchanger 117 is arranged on the outside of the bottom of the second surrounding section 1112.

[0083] The diagonal arrangement of the first liquid outlet 114 and the first liquid inlet 113 further lengthens the circulation path of the cooling liquid. The arrangement positions of the first circulating pump 119 and the first wall-type heat exchanger 117 make the structure of the cooling system 11 more compact, thereby occupying less space in the heat pump type cleaning equipment 1.

[0084] In some embodiments, as shown in FIG. 1, the cooling system 11 can further include a first partitioned heat exchanger 117, which is arranged in the second surrounding section 1112 of the liquid tank 111. Figure 3 As shown in FIG. 1, the bottom of the second surrounding section 1112 is also bent to form a containing space for the first partitioned heat exchanger 117, and the first partitioned heat exchanger 117 is arranged in the containing space, so that the structure of the cooling system 11 is compact and neat.

[0085] The specific type of the first partitioned heat exchanger 117 is not limited, for example, it can be a tube-shell heat exchanger, a double-pipe heat exchanger, an immersed coiled pipe heat exchanger, a jacketed heat exchanger, or a plate heat exchanger, etc.

[0086] In some embodiments of the present disclosure, the first partitioned heat exchanger 117 adopts a tube-shell heat exchanger, which uses the wall surface of the tube bundle enclosed in the shell as the heat transfer surface, and has the characteristics of simple structure, low cost, wide flow cross section, and easy to clean scale. The first partitioned heat exchanger 117 adopts a tube-shell heat exchanger and is arranged outside the bottom of the second surrounding section 1112 of the liquid tank 111, which is more conducive to the compact design of the structure of the cooling system 11.

[0087] As shown in FIG. 1, the cooling system 11 can further include a first partitioned heat exchanger 117, which is arranged in the second surrounding section 1112 of the liquid tank 111. Figure 6 Figure 7 As shown in FIG. 1, in some embodiments of the present disclosure, the cooling system 11 can further include a heater 120 arranged in the second flow channel 116, for example, an electric heater 120.

[0088] When the heat pump system 13 is working, the temperature of the refrigerant in the evaporating element 105 will be significantly lower than the temperature of the cooling liquid, and there is a tendency to continue to lower the temperature. Therefore, the cooling liquid in the cooling system 11 which exchanges heat with the refrigerant will also be cooled due to the absorption of cold. If the working environment temperature of the heat pump cleaning equipment 1 is also low, when the temperature of the cooling liquid is reduced to the freezing point or below, the cooling liquid will lose its flowability (for example, the cooling water temperature starts to freeze when it is reduced to 0℃), at this time, the heat pump system 13 will stop running because the cold cannot be dissipated.

[0089] In order to improve the reliability of the operation of the heat pump cleaning equipment 1, the embodiments of the present disclosure provide a heater 120 arranged in the second flow channel 116. When the heater 120 is working, on the one hand, it can prevent the flowability of the cooling liquid from deteriorating, and on the other hand, it can form a non-uniformity of the temperature of the cooling liquid in the liquid tank 111, so that the cooling liquid with a higher temperature always enters the first hot side channel first to exchange heat with the evaporating element 105, so as to further improve the heat exchange efficiency. Therefore, this design can improve the reliability and environmental adaptability of the heat pump cleaning equipment 1 when it is working. Even in the cold winter in the north, the heat pump cleaning equipment 1 can still operate normally and efficiently.

[0090] In some embodiments of the present disclosure, the heater 120 can be a manually turned-on heater.

[0091] ​In some embodiments of the present disclosure, the heater 120 can also be a smart heater comprising a temperature sensing module, configured to start heating when the temperature of the cooling liquid in the liquid tank 111 is lower than a first temperature threshold, and / or start heating intermittently according to a set heating duration and a set heating frequency when the temperature of the cooling liquid in the liquid tank 111 is not less than a second temperature threshold and not greater than a third temperature threshold.

[0092] The above-mentioned first temperature threshold, second temperature threshold, third temperature threshold, set heating duration and set heating frequency, etc. can be set before the product is shipped, or can be set by the user according to the season and climate characteristics used by the cleaning equipment. In one embodiment, the cooling liquid is cooling water, the first temperature threshold is set to 1℃, the second temperature threshold is set to 15℃, and the third temperature threshold is set to 20℃.

[0093] As shown in Figure 1 , Figure 8 and Figure 9 , the present disclosure also provides a chassis assembly 10 for the aforementioned heat pump cleaning equipment 1 such as a heat pump dishwasher. The chassis assembly 10 comprises a chassis body 12, and the cooling system 11 of any of the above-mentioned embodiments fixed above the chassis body 12. The chassis assembly 10 has a compact structure and occupies less space, and since the cooling system 11 has high heat exchange efficiency, the energy efficiency of the heat pump cleaning equipment 1 can be significantly improved, and the working noise is smaller.

[0094] As shown in Figure 1 , Figure 8 and Figure 9 , in some embodiments of the present disclosure, the liquid tank 111 has an open loop shape, and the chassis assembly 10 further comprises a compressor 101, a second inter-wall heat exchanger 102, a throttling device 103 and a second circulating pump 104 fixed above the chassis body 12.

[0095] The second inter-wall heat exchanger 102 comprises a second cold side channel and a second hot side channel as a condensing element 106; the compressor 101, the second hot side channel of the second inter-wall heat exchanger 102, the throttling device 103 and the first cold side channel of the first inter-wall heat exchanger 117 are connected in series through a pipeline 30 to form a circulation loop of the heat pump system 13; the second circulating pump 104 and the second cold side channel of the second inter-wall heat exchanger 102 are configured to be connected in the spraying system 15 of the heat pump cleaning equipment 1; the compressor 101, the second inter-wall heat exchanger 102, the throttling device 103 and the second circulating pump 104 are surrounded by the liquid tank 111. The type of the second inter-wall heat exchanger 102 is not limited, for example, a tube-in-shell heat exchanger can also be used.

[0096] As shown in Figure 1As shown, when the cleaning device is a heat pump dishwasher, the spraying system 15 further comprises at least one spray arm 154, each of which has a plurality of spray nozzles 155, and when the cleaning device is in operation, the washing water heated by the heat pump system 13 is sprayed to the cleaning object accommodating cavity 156 through the spray nozzles 155 of the spray arm 154.

[0097] A bearing basket (not shown in the figure) can be arranged in the cleaning object accommodating cavity 156, and the tableware is placed on the bearing basket, which not only can stack more tableware and improve the space utilization of the cleaning object accommodating cavity 156, but also can make the tableware fully soaked in the washing water and improve the cleaning effect.

[0098] In some embodiments of the present disclosure, the washing water of the cleaning device can be recycled and reused after filtration. As shown in Figure 1 and Figure 8 As shown, the bottom pan assembly 10 further comprises a water cup 151 fixed above the bottom pan body 12 and surrounded by the liquid tank 111, and the water cup 151 comprises a water inlet 152 and a backwater filtering port 153, wherein the water inlet 152 is configured to be connected to a water inlet pipe for connecting to a water supply source.

[0099] When the cleaning device is in operation, the washing water enters the pipeline of the spraying system 15 from the water inlet 152 of the water cup 151, and the washing water sprayed by the spray nozzles 155 of the spray arm 154 flows into the water cup 151 after falling on the bottom of the cleaning object accommodating cavity 156, and then flows into the pipeline of the spraying system 15 again after being filtered through the backwater filtering port 153. By repeating the above process, the tableware and other cleaning objects placed in the cleaning object accommodating cavity 156 can be cleaned.

[0100] This embodiment makes full use of the internal area of the open ring shape of the liquid tank 111, so that the structure of the bottom pan assembly 10 is more compact and occupies less space, thereby being more conducive to the miniaturization design of the heat pump cleaning device 1. Due to the smaller occupied space of the bottom pan assembly 10, the volume of the cleaning object accommodating cavity 156 of the heat pump cleaning device 1 can be appropriately expanded, thereby improving the cleaning capacity.

[0101] The embodiments of the present disclosure further provide a heat pump cleaning device comprising the bottom pan assembly 10 of the foregoing embodiments.

[0102] The product type of the heat pump cleaning device is not limited, for example, it can be a heat pump dishwasher or a heat pump clothes washing and protecting machine, etc. The heat pump cleaning device has high energy efficiency and low working noise, and in addition, the placement or installation of the heat pump cleaning device does not need to consider the inflow and outflow of air cooling air flow, and therefore is more suitable for embedded design embedded in the wall or the cooking bench.

[0103] In one embodiment, the heat pump cleaning device is an embedded dishwasher which can be embedded under the cooking bench in the kitchen, and is practical and beautiful.

[0104] It should be understood that, in the present specification, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship or dimensions based on the orientation or positional relationship or dimensions shown in the drawings, and the use of these terms is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0105] In addition, the terms "first", "second", "third", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0106] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection, or communication; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0107] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0108] The present specification provides many different embodiments or examples of how the application can be implemented. It should be understood that these different embodiments or examples are presented merely to provide the full scope of the application and are not intended to limit the scope of the application in any way. Various changes or modifications can be suggested to one skilled in the art, and it is intended that the scope of the application should encompass those changes and modifications as well. The scope of the application is therefore indicated by the scope of the appended claims.

Claims

1. A cooling system for a heat pump cleaning device, characterized in that, include: A liquid tank has an internal partition and includes a first liquid inlet, a first liquid outlet, a first flow channel and a second flow channel separated by the partition and connected at one end of the partition, wherein the first flow channel is connected to the first liquid inlet and the second flow channel is connected to the first liquid outlet. The first wall-mounted heat exchanger includes a first hot-side channel and a first cold-side channel, wherein one end of the first hot-side channel is connected to the first liquid outlet, and the first cold-side channel is configured to be connected to the circulation loop of the heat pump system of the heat pump cleaning equipment and serve as an evaporation element. A connecting pipe that connects the other end of the first hot-side channel to the first liquid inlet; and A first circulation pump is installed on the connecting pipeline; the liquid tank has an open-loop shape. The liquid tank includes a top plate, a bottom plate, and an inner side plate, an outer side plate, a first end plate, and a second end plate connecting the top plate and the bottom plate. It also includes a first surrounding section, a second surrounding section, a third surrounding section, and a fourth surrounding section that are connected in sequence. The first surrounding section includes a first end plate, and the fourth surrounding section includes a second end plate.

2. The cooling system according to claim 1, characterized in that, The partition is located within the third and fourth surrounding sections and is connected to the top plate, the bottom plate, and the inner side plate respectively. There is a gap between the partition and the second end plate.

3. The cooling system according to claim 1, characterized in that, The first liquid outlet is located at the intersection of the second and third annular sections and faces the third annular section. The first liquid inlet is located in the first annular section and faces away from the second, third, and fourth annular sections. The first liquid outlet and the first liquid inlet are arranged diagonally.

4. The cooling system according to claim 1, characterized in that, The connecting pipeline and the first circulating pump are located on the side of the first annular section opposite to the second annular section, the third annular section, and the fourth annular section.

5. The cooling system according to claim 1, characterized in that, The first indirect heat exchanger is located on the bottom outer side of the second circumferential section.

6. The cooling system according to any one of claims 1 to 5, characterized in that, Also includes: A heater located in the second flow channel is configured to start heating when the temperature of the coolant in the liquid tank is lower than a first temperature threshold, and / or to start heating intermittently according to a set heating duration and a set heating frequency when the temperature of the coolant in the liquid tank is not lower than a second temperature threshold and not higher than a third temperature threshold.

7. A heat pump cleaning device, characterized in that, include: Chassis body; as well as A cooling system according to any one of claims 1 to 6, fixed above the chassis body.

8. The heat pump cleaning equipment according to claim 7, characterized in that, Also includes: The compressor, the second partition wall heat exchanger, the throttling device, and the second circulating pump are fixed above the chassis body, wherein... The second indirect heat exchanger includes a second cold-side passage and a second hot-side passage that serves as a condensing element; The compressor, the second hot-side channel of the second indirect heat exchanger, the throttling device, and the first cold-side channel of the first indirect heat exchanger are connected in a closed loop through pipelines to form a circulation loop of the heat pump system. The second circulating pump and the second cold-side passage of the second indirect heat exchanger are configured to be connected to the spray system of the heat pump cleaning equipment; The liquid tank has an open-loop shape surrounding the compressor, the second indirect heat exchanger, the throttling device, and the second circulating pump.

9. The heat pump cleaning equipment according to claim 7 or 8, characterized in that, The heat pump cleaning equipment includes a heat pump dishwasher.

Images