Dishwasher

Abstract

The dish-washing machine comprises a dish-washing machine main body and a heat pump system, the dish-washing machine main body is provided with an air inlet, a heat exchange air duct, a washing chamber, an air outlet and a spraying system, the washing chamber is communicated with the outside through the air outlet, and the air inlet, the heat exchange air duct, the washing chamber and the air outlet are sequentially communicated; the spraying system is used for spraying washing water to the washing chamber; the heat pump system comprises a compression device, a first heat exchange device and a second heat exchange device, the first heat exchange device is arranged in the heat exchange air duct and comprises a first heat exchange piece and a first fan, and the compression device, the first heat exchange piece and the second heat exchange device are sequentially communicated to form a circulating heat exchange loop; the first draught fan is used for driving airflow of the heat exchange air duct to conduct heat exchange through the first heat exchange piece so as to provide hot air for the washing cavity. The energy consumption of the existing dish washing machine can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical appliances, in particular to a dishwasher. Background Art

[0002] Dishwashers usually have a drying mode. After washing, the inside of the dishwasher is filled with humid air with high relative humidity and high temperature and liquid water droplets attached to the surface of the dishes, so it is necessary to enter the drying mode. However, in the related art, existing dishwashers have the problem of high energy consumption for drying.

[0003] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Utility Model Content

[0004] The main purpose of the utility model is to provide a dishwasher, aiming to reduce the energy consumption of the existing dishwasher.

[0005] To achieve the above-mentioned purpose, the dishwasher proposed by the utility model comprises:

[0006] The dishwasher body comprises an air inlet, a heat exchange air duct, a washing chamber, an exhaust port and a spray system, wherein the washing chamber is connected to the outside through the exhaust port, and the air inlet, the heat exchange air duct, the washing chamber and the exhaust port are connected in sequence; the spray system is used to spray washing water into the washing chamber;

[0007] The heat pump system includes a compression device, a first heat exchange device and a second heat exchange device, wherein the first heat exchange device is arranged in the heat exchange air duct, the first heat exchange device includes a first heat exchange element and a first fan, and the compression device, the first heat exchange element and the second heat exchange device are connected in sequence to form a circulating heat exchange loop; the first fan is used to drive the airflow in the heat exchange air duct to pass through the first heat exchange element for heat exchange, so as to provide hot air to the washing chamber.

[0008] In one embodiment, the dishwasher body comprises a shell, and the air inlet and the air outlet are arranged on the same side of the shell.

[0009] In one embodiment, the second heat exchange device includes a second heat exchange element and a second fan, the second fan is used to supply air to the second heat exchange element, the outer shell is provided with an air outlet, the air outlet side of the second fan is connected to the air outlet, and the air outlet and the air inlet are arranged on different sides of the outer shell.

[0010] In one embodiment, the dishwasher body includes a first damper, which is movably disposed at the exhaust port; the first damper is used to close the exhaust port in the washing stage and to open the exhaust port in the drying stage.

[0011] In one embodiment, the dishwasher body further includes a second air door, which is movably disposed at the air inlet; the second air door is used to close the air inlet during the washing stage and to open the air inlet during the drying stage.

[0012] In one embodiment, the dishwasher body includes an outer shell, an inner tank and a door body, the inner tank is arranged in the outer shell, the outer shell is provided with a first opening, the door body can be movably provided on the outer shell to open or close the first opening, the washing chamber is defined between the inner tank and the door body, the heat exchange air duct is defined between the outer shell and the inner tank, and the exhaust port is provided on the door body and / or the outer shell.

[0013] In one embodiment, the heat pump system further comprises a throttling device, which is disposed in the circulating heat exchange loop and located between the first heat exchange element and the second heat exchange device.

[0014] In one embodiment, the spray system includes a spray assembly, a water cup and a water pump. The spray assembly is arranged in the washing chamber and is used to spray washing water into the washing chamber. The water cup is connected to the water pump, and the water pump is connected to the spray assembly through a first pipeline.

[0015] In one embodiment, the dishwasher further comprises an electric heating device, which is disposed on the first pipeline and is used to heat the washing water in the first pipeline;

[0016] And / or, the electric heating device is arranged in the heat exchange air duct.

[0017] In one embodiment, the second heat exchange device is disposed outside the heat exchange air duct and the washing chamber.

[0018] The dishwasher of the present application includes a dishwasher body and a heat pump system. The dishwasher body has an air inlet, a heat exchange duct, a washing chamber, an exhaust port and a spray system. The washing chamber is connected to the outside through the exhaust port, and the heat exchange duct is connected to the washing chamber, so that the air inlet, the heat exchange duct, the washing chamber and the exhaust port are connected in sequence; the heat pump system includes a compression device, a first heat exchange device and a second heat exchange device, the first heat exchange device is arranged in the heat exchange duct, the first heat exchange device includes a first heat exchange element and a first fan, the compression device, the first heat exchange element and the second heat exchange device are connected in sequence to form a circulating heat exchange loop, the first fan is used to drive the air flow in the heat exchange duct to pass through the first heat exchange element for heat exchange, so as to provide hot air to the washing chamber. With this arrangement, the dishwasher can In the stage, the refrigerant discharged by the compression device passes through the circulating heat exchange loop, and the refrigerant flows through the first heat exchange element to condense and release heat. At this time, the first heat exchange element generates heat. The first fan is arranged in the heat exchange air duct. The first fan can drive the air to flow through the first heat exchange element for heating. The heated air flows into the washing chamber. When the dishwasher is in the washing stage, the air inlet and the air outlet can be closed to form an internal circulation, so that the air heated by the first heat exchange element flows into the washing chamber to heat the washing water, so as to improve the washing effect, and the residual heat can also be used to dry the tableware; when the dishwasher is in the drying stage, the air flow enters through the air inlet and exchanges heat with the first heat exchange element, and then flows into the washing chamber to heat and dry the tableware in the washing chamber, and then is discharged from the exhaust port. It can be seen that the heat generated by the first heat exchange device in the dishwasher of the present application is used for the washing stage and the drying stage. The utilization rate of the heat generated by the first heat exchange device is high, which reduces energy waste and is conducive to reducing the energy consumption of the dishwasher. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 This is a structural schematic diagram of an embodiment of a dishwasher provided by the utility model.

[0021] Description of Figure Numbers:

[0022] 10. Dishwasher;

[0023] 100, dishwasher body; 110, heat exchange air duct; 120, washing chamber; 130, exhaust port; 140, spray system; 141, spray assembly; 142, water cup; 143, water pump; 144, first pipeline; 150, first air door; 160, air inlet; 170, second air door;

[0024] 200, heat pump system; 210, compression device; 220, first heat exchange device; 221, first heat exchange element; 222, first fan; 230, second heat exchange device; 231, second heat exchange element; 232, second fan; 240, throttling device;

[0025] 300. Electric heating device.

[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0030] The utility model provides a dishwasher, which aims to reduce the energy consumption of existing dishwashers. The dishwasher is a heat pump dishwasher, which can be used for home use or commercial use. For ease of understanding and explanation, in the drawings of the specification of this application, the solid arrows indicate spaces, slots or holes.

[0031] See also Figure 1 In the embodiment of the present application, the dishwasher 10 includes a dishwasher body 100 and a heat pump system 200. The dishwasher body 100 has an air inlet 160, a heat exchange air duct 110, a washing chamber 120, an exhaust port 130 and a spray system 140. The washing chamber 120 is connected to the outside through the exhaust port 130. The air inlet 160, the heat exchange air duct 110, the washing chamber 120 and the exhaust port 130 are connected in sequence. The spray system 140 is used to spray washing water to the washing chamber 120. The heat pump system 200 includes a compressor. The first heat exchange device 210, the first heat exchange device 220 and the second heat exchange device 230, the first heat exchange device 220 is arranged in the heat exchange air duct 110, the first heat exchange device 220 includes a first heat exchange element 221 and a first fan 222, the compression device 210, the first heat exchange element 221 and the second heat exchange device 230 are connected in sequence to form a circulating heat exchange loop; the first fan 222 is used to drive the air flow of the heat exchange air duct 110 to pass through the first heat exchange element 221 for heat exchange, so as to provide hot air to the washing chamber 120.

[0032] It is understood that the refrigerant discharged from the compression device 210 passes through the circulating heat exchange circuit. The compression device 210 is not limited to a compressor. The refrigerant discharged from the compression device 210 is, for example, chlorofluorocarbons, hydrochlorofluorocarbons, hydrofluorocarbons, or other Freons, or hydrofluorocarbons.

[0033] Furthermore, the dishwasher 10 has a washing stage and a drying stage. The first heat exchange device 220 includes a first heat exchange element 221 and a first fan 222. The first heat exchange element 221 and the first fan 222 are both arranged in the heat exchange air duct 110. The first fan 222 is used to drive the air flow through the first heat exchange element 221 for heat exchange to provide hot air to the washing chamber 120. The hot air can not only heat the washing water in the washing stage, but also heat and dry the dishes in the drying stage. In other words, the technical solution of the present application improves the utilization rate of the first heat exchange device 220 and the heat utilization rate of the dishwasher 10 by using the heat generated by the first heat exchange device 220 for the washing stage and the drying stage, thereby reducing the energy consumption of the dishwasher 10.

[0034] Further, the dishwasher 10 includes a dishwasher body 100 and a heat pump system 200, and the heat pump system 200 is used to heat the air in the washing chamber 120. The dishwasher body 100 generally includes a shell and a spray system 140, and the shell constructs the washing chamber 120 and the heat exchange air duct 110. The shell generally includes an outer shell, an inner tank and a door body, and the outer shell is provided with a first opening, the inner tank is arranged in the outer shell, and the door body can be movably arranged on the outer shell to open or close the first opening; the washing chamber 120 is defined between the inner tank and the door body, and the heat exchange air duct 110 is defined between the outer shell and the inner tank. The washing chamber 120 has an air inlet 160 and an air outlet 130 that are connected to the external environment of the shell, and the heat exchange air duct 110 is connected to the washing chamber 120, that is, the air inlet 160, the heat exchange air duct 110, the washing chamber 120 and the air outlet 130 are connected in sequence. In some embodiments, the dishwasher 10 can be a structure in which the door body and the inner tank are integrated into one body.

[0035] Regarding the spray system 140, the spray system 140 is used to spray washing water into the washing chamber 120 to clean the tableware placed in the washing chamber 120. The spray system 140 generally includes but is not limited to a water pump 143, a spray assembly 141, a water cup 142, a pipeline assembly, a controller, a filter, a water level sensor, and a drainage device. Among them, the water pump 143 is one of the key components of the spray system 140 of the dishwasher 10, which is responsible for delivering the cleaning liquid used to clean the tableware to the spray arm or nozzle. The water pump 143 is usually driven by an electric motor to generate sufficient water pressure and flow to ensure the washing effect. The spray assembly 141 generally includes a spray arm and / or a nozzle. The spray assembly 141 is the outlet for the spray of the cleaning liquid in the spray system 140 of the dishwasher 10. The spray assembly 141 is generally located inside the dishwasher 10, and the spray water is evenly sprayed onto the surfaces of dishes, tableware, etc. by rotating or directional spraying to clean the tableware. The pipe assembly is responsible for delivering water to the spray arm and / or nozzle and ensuring that the water flows smoothly to the target area. The pipe assembly is usually made of corrosion-resistant materials, such as stainless steel or plastic. The controller of the spray assembly 141 is used to control the start and stop, spray time, spray mode and other parameters of the spray assembly 141. The controller of the spray assembly 141 is usually part of the electronic control panel of the dishwasher 10. The user can set the corresponding parameters through the buttons on the panel or the touch screen. The filter is used to filter impurities and residues in the washing water to prevent the nozzles and pipes of the spray system 140 from being blocked, which is conducive to maintaining the normal operation and cleaning effect of the spray system 140. The water level sensor is used to monitor the internal water level of the water cup 142 of the dishwasher 10 to ensure the stable operation of the water pump 143 to prevent the water level from being too high during the drying stage and drying. The drainage device is used to discharge the sewage generated during the cleaning process from the dishwasher 10 to maintain a clean environment. The drainage device usually includes components such as a drainage pipe, a drainage pump 143 and a drainage filter.

[0036] In one embodiment, the spray system 140 includes a water cup 142, which is disposed at the bottom of the inner tank. On the one hand, the water cup 142 is used to store washing water for rinsing dishes. The washing water is pumped from the water cup 142 by a water pump 143 and transported to the spray assembly 141. On the other hand, the water cup 142 is also used to collect sewage generated after washing the dishes. The sewage is collected by the water cup 142 and discharged through a drainage pipe.

[0037] Regarding the first heat exchange device 220, the first heat exchange device 220 is used to exchange heat with the airflow entering the heat exchange duct 110 through the air inlet 160 to heat the airflow. In order to allow the heated airflow to flow smoothly to the washing chamber 120, the first heat exchange device 220 is also provided with a first fan 222. The first fan 222 is used to drive the airflow in the heat exchange duct 110 to flow into the washing chamber 120 after heat exchange through the first heat exchange element 221, so as to heat or dry the washing chamber 120.

[0038] Regarding the second heat exchange device 230, the second heat exchange device 230 is used to exchange heat with the air, usually absorbing heat from the air. The second heat exchange device 230 includes a heat sink, a fan, a heat pipe, etc., and cools the gas by forced convection. For example, the second heat exchange device 230 includes a second heat exchange element 231 and a second fan 232. The second fan 232 is used to supply air to the second heat exchange element 231. The second heat exchange element 231 is provided with a heat exchange channel for medium circulation. In this embodiment, the second heat exchange device 230 can also be an air spiral heat exchanger, which combines the design of a spiral heat exchanger and the function of an air heat exchanger, and exchanges heat with the air through a spiral pipe structure.

[0039] The dishwasher 10 of the present application includes a dishwasher body 100 and a heat pump system 200. The dishwasher body 100 has an air inlet 160, a heat exchange air duct 110, a washing chamber 120, an air outlet 130 and a spray system 140. The washing chamber 120 is connected to the outside through the air outlet 130, and the heat exchange air duct 110 is connected to the washing chamber 120, so that the air inlet 160, the heat exchange air duct 110, the washing chamber 120 and the air outlet 130 are connected in sequence; the heat pump system 200 00 comprises a compression device 210, a first heat exchange device 220 and a second heat exchange device 230, wherein the first heat exchange device 220 is arranged in the heat exchange air duct 110, and the first heat exchange device 220 comprises a first heat exchange element 221 and a first fan 222, and the compression device 210, the first heat exchange element 221 and the second heat exchange device 230 are sequentially connected to form a circulating heat exchange loop, and the first fan 222 is used to drive the airflow of the heat exchange air duct 110 to pass through the first heat exchange element 221 for heat exchange, so as to provide the washing The chamber 120 provides hot air. In this arrangement, when the dishwasher 10 is in the washing stage, the refrigerant discharged by the compression device 210 passes through the circulating heat exchange circuit, and the refrigerant flows through the first heat exchange element 221 to condense and release heat. At this time, the first heat exchange element 221 generates heat. The first fan 222 is arranged in the heat exchange air duct 110. The first fan 222 can drive air to flow through the first heat exchange element 221 for heating, and the heated air flows into the washing chamber 120. When the dishwasher 10 is in the washing stage, the air inlet 160 and the air outlet 130 can be closed to form an internal circulation, so that the air heated by the first heat exchange element 221 flows into the washing chamber 120 to heat the washing water, so as to improve the washing effect, and the residual heat can also be used to dry the tableware; when the dishwasher 10 is in the drying stage, the air flow enters through the air inlet 160, exchanges heat with the first heat exchange element 221, and then flows into the washing chamber 120 to heat and dry the tableware in the washing chamber 120, and then is discharged outward from the air outlet 130. It can be seen that the heat generated by the first heat exchange device 220 in the dishwasher 10 of the present application is used for the washing stage and the drying stage. The heat generated by the first heat exchange device 220 has a high utilization rate, which reduces energy waste and is beneficial to reducing the energy consumption of the dishwasher 10. At the same time, it also optimizes the internal structure of the dishwasher 10, which is beneficial to the miniaturization of the dishwasher 10.

[0040] See also Figure 1In one embodiment, the dishwasher body 100 includes a first damper 150, which is movably disposed at the exhaust port 130; the first damper 150 is used to close the exhaust port 130 in the washing stage and to open the exhaust port 130 in the drying stage. It is understood that the manner in which the first damper 150 is movably disposed at the exhaust port 130 is not limited, for example, the first damper 150 is rotatably disposed at the exhaust port 130, or the first damper 150 is slidably disposed at the exhaust port 130. When the dishwasher 10 washes dishes in the washing stage, the first air door 150 closes the exhaust port 130 to prevent the washing water from splashing out from the exhaust port 130, and allows the hot air to form a circulating heating airflow in the washing chamber 120, thereby heating the washing water; when the dishwasher 10 heats and dries the dishes in the drying stage, the first air door 150 opens the exhaust port 130, so that the air in the washing chamber 120 after drying the dishes can be discharged from the exhaust port 130 to form circulating air, which is beneficial to increase the drying speed.

[0041] See also Figure 1 In one embodiment, the dishwasher body 100 further has an air inlet 160 connected to the outside. It is understood that, in the drying stage, air outside the dishwasher 10 enters from the air inlet 160, and the air inlet 160 is connected to the heat exchange air duct 110. It is sufficient that the air can flow through the heat exchange air duct 110 and the washing chamber 120 and then be discharged from the exhaust port 130. In addition, there are many ways to form the air inlet 160, such as but not limited to: the air inlet 160 can be set on the door body; or, the air inlet 160 is formed between the door body and the shell; or, the air inlet 160 is set on the shell; or, in the drying stage, the door body is opened to form the air inlet 160. By forming the air inlet 160, in the drying stage, it is helpful to improve the smoothness of the air flowing out of the exhaust port 130 after passing through the heat exchange air duct 110 and the washing chamber 120.

[0042] In one embodiment, the dishwasher body 100 further includes a second damper 170, which is movably disposed at the air inlet 160; the second damper 170 is used to close the air inlet 160 in the washing stage and to open the air inlet 160 in the drying stage. It is understood that the manner in which the second damper 170 is movably disposed at the air inlet 160 is not limited, for example, the second damper 170 is rotatably disposed at the air inlet 160, or the second damper 170 is slidably disposed at the air inlet 160. The air inlet 160 in this solution may be disposed on the door body; or, the air inlet 160 may be disposed on the housing. By arranging the second air door 170 at the air inlet 160, when the dishwasher 10 washes dishes in the washing stage, the second air door 170 closes the air inlet 160 to prevent washing water from splashing out from the air inlet 160; when the dishwasher 10 heats and dries the dishes in the drying stage, the second air door 170 opens the air inlet 160, so that air can flow smoothly through the heat exchange duct 110 and the washing chamber 120 and then flow out from the exhaust port 130, which is beneficial to improve the drying speed.

[0043] In one embodiment, the second heat exchange device 230 is disposed outside the heat exchange air duct 110 and the washing chamber 120. This arrangement facilitates the installation of the second heat exchange device 230, and there is no need to dispose the second heat exchange device 230 in the heat exchange air duct 110 to occupy a large space in the heat exchange air duct 110, thereby helping to reduce the volume of the heat exchange air duct 110, making it easy to form the heat exchange air duct 110 in the dishwasher 10, which is conducive to optimizing the structural arrangement in the dishwasher 10. In addition, the second heat exchange device 230 is disposed outside the washing chamber 120, which is conducive to ensuring that the washing chamber 120 has sufficient capacity space, and there is no specific requirement for the installation position of the second heat exchange device 230, and it can be installed as needed, which improves the convenience of installing the second heat exchange device 230.

[0044] In one embodiment, the dishwasher body 100 includes an outer shell, an inner tank and a door body, the inner tank is arranged in the outer shell, the outer shell is provided with a first opening, the door body can be movably provided on the outer shell to open or close the first opening, the washing chamber 120 is defined between the inner tank and the door body, the heat exchange air duct 110 is defined between the outer shell and the inner tank, and the exhaust port 130 is provided on the door body and / or the outer shell.

[0045] It is understandable that when the exhaust port 130 is provided on the door body, the exhaust port 130 and the door body are provided on the same side of the housing, that is, the exhaust port 130 is provided on the front side (the side facing the user), so that the exhaust port 130 is prevented from being blocked or the airflow is intercepted when the dishwasher 10 is placed against the wall, thereby making the exhaust smoother. In addition, the specific position of the exhaust port 130 provided on the housing is not limited, and it is only required that the air in the washing chamber 120 can be discharged from the exhaust port 130. By providing the exhaust port 130, the air in the washing chamber 120 can exchange heat with the air outside the dishwasher 10, which is conducive to improving the heat exchange efficiency of the first heat exchange element 221.

[0046] In one embodiment, the dishwasher body 100 includes a housing, and the dishwasher body 100 also has an air inlet 160 connected to the outside, the air inlet 160, the heat exchange air duct 110, the washing chamber 120 and the air outlet 130 are connected in sequence, and the air inlet 160 and the air outlet 130 are arranged on the same side of the housing. It can be understood that the air inlet 160 and the air outlet 130 can be arranged on one side of the door body, that is, the air inlet 160 and the air outlet 130 are arranged on the front side of the dishwasher 10, so as to avoid the situation where the air inlet and air outlet are blocked or the air flow is intercepted when the dishwasher 10 is placed against the wall, so that the air inlet and air outlet are smoother.

[0047] In one embodiment, the second heat exchange device 230 includes a second heat exchange element 231 and a second fan 232, the second fan 232 is used to supply air to the second heat exchange element 231, an air outlet is provided on the outer shell, the air outlet side of the second fan 232 is connected to the air outlet, and the air outlet and the air inlet 160 are provided on different sides of the outer shell.

[0048] It is understandable that the second heat exchange member 231 is provided with a heat exchange channel for the circulation of the refrigerant. By providing the second fan 232, the heat exchange efficiency of the second heat exchange member 231 can be accelerated, and the second heat exchange member 231 can also be prevented from frosting during the drying stage. In addition, the air outlet and the air inlet 160 are arranged on different sides of the housing to prevent the cold air blown out from the air outlet from flowing into the washing chamber 120 and affecting the washing and drying effect of the dishes. For example, the air inlet 160 can be arranged on the front side of the dishwasher 10, and the air outlet can be arranged on the left side, or the right side, or the rear side, or the bottom surface, or the top surface, etc. of the dishwasher 10, and the specific details are not limited here.

[0049] In one embodiment, the second heat exchange device 230 may also be disposed outside the housing of the dishwasher 10 .

[0050] In one embodiment, the first heat exchange device 220 and the second heat exchange device 230 are disposed below the inner tank.

[0051] In one embodiment, the air outlet 130 is disposed at the upper part of the inner container, the air inlet 160 is disposed at the lower part of the inner container, and / or the air outlet can be disposed at the lower part of the inner container. In this way, the air inlet 160 is disposed below the air outlet 130. The midline of the height of the inner container can be used as a standard, and the part above the midline is the upper part, and the part below the midline is the lower part.

[0052] In one embodiment, the first heat exchange member 221 is a flexible member, and the dishwasher body 100 also has an installation gap, and the first heat exchange member 221 is arranged in the installation gap. It can be understood that the installation gap can be formed between the outer shell and the inner tank, or between the outer shell and the spray system 140, or between the outer shell, the inner tank and the spray system 140. In short, the installation gap can be formed between any necessary parts of the dishwasher 10. The first heat exchange member 221 can be tubular or in other shapes, and only needs to be a flexible member. The first heat exchange member 221, which is a flexible member, is easy to be arranged in the installation gap of the dishwasher 10, that is, it is easy to be arranged in the internal space of the dishwasher 10, reducing the gap between the first heat exchange member 221 and other parts of the dishwasher 10, and reducing the installation space occupied by the first heat exchange device 220, so that the internal structure of the dishwasher 10 is more compact.

[0053] In one embodiment, the heat pump system 200 further includes a throttling device 240. The throttling device 240 has the following functions:

[0054] Adjusting the refrigerant flow: The throttling device 240 can throttle and reduce the pressure of the high-pressure liquid to a low-pressure liquid, and at the same time adjust the refrigerant flow entering the evaporator, thereby ensuring that the refrigerant flow in the heat pump system 200 is within a reasonable range.

[0055] Reduce the difficulty of heat exchange: For example, during the heat exchange process, the throttling device 240 will cause the refrigerant liquid to flow through a small hole, forming a local contraction, thereby increasing the flow rate and reducing the static pressure. This pressure difference will make the refrigerant easier to evaporate in the evaporator, reduce the difficulty of heat exchange, and improve the heat exchange efficiency.

[0056] Achieving temperature control: The throttling device 240 can also be used as an important part of temperature control. When the system requires a colder temperature, the throttling device can be used to reduce the flow of the refrigerant, thereby reducing the evaporation temperature. Conversely, when the system requires a warmer temperature, the throttling device can be used to increase the flow of the refrigerant, thereby increasing the evaporation temperature.

[0057] See also Figure 1 In one embodiment, the heat pump system 200 further includes a throttling device 240 , which is disposed in the circulating heat exchange loop and located between the first heat exchange element 221 and the second heat exchange device 230 .

[0058] It is understandable that the throttling device 240 can be an electronic expansion valve. In the washing stage, the refrigerant discharged from the compression device 210 flows along the circulating heat exchange loop, and the refrigerant flows through the first heat exchange element 221 to condense and release heat, then flows through the throttling device 240 for throttling, and then flows through the second heat exchange device 230 to evaporate and absorb heat, and then returns to the compression device 210. In this process, the heat generated by the first heat exchange device 220 can flow into the washing chamber 120 to heat the inner wall of the chamber, the washing water and the tableware, thereby helping to improve the washing effect of the tableware. In the drying stage, the first heat exchange device 220 generates heat, the first fan 222 runs, the air passes through the first heat exchange element 221 to be heated and flows into the washing chamber 120 along the heat exchange air duct 110, so as to heat and dry the tableware in the washing chamber 120, and then is discharged from the exhaust port 130. It can be seen that the throttling device 240 of this solution can control the flow speed and flow of the refrigerant, adjust the evaporation temperature and pressure, and thus control the heat exchange effect of the heat pump system 200.

[0059] See also Figure 1 In one embodiment, the spray system 140 includes a spray component 141, a water cup 142 and a water pump 143. The spray component 141 is disposed in the washing chamber 120 and is used to spray washing water into the washing chamber 120. The water cup 142 is connected to the spray component 141 through a first pipe 144, and the water pump 143 is disposed on the first pipe 144.

[0060] It can be understood that the water pump 143 is disposed on the first pipeline 144, the water cup 142 is disposed at the bottom of the washing chamber 120, and the water cup 142, the water pump 143 and the spray assembly 141 are sequentially connected, so that the water pump 143 can transport the washing water in the water cup 142 to the spray assembly 141, and the spray assembly 141 then sprays the washing water into the washing chamber 120 to clean the dishes placed in the washing chamber 120. By providing the water pump 143, it is ensured that the spray assembly 141 can generate sufficient water pressure and flow to ensure the washing effect.

[0061] In one embodiment, the dishwasher 10 further includes an electric heating device 300, which is disposed on the first pipe 144 and is used to heat the washing water in the first pipe 144. It can be understood that the electric heating device 300 is an auxiliary heating device that uses electrical energy as an energy source and converts electrical energy into thermal energy. When the electric heating device 300 is disposed on the first pipe 144, the electric heating device 300 is used to heat the washing water in the first pipe 144, and the electric heating device 300 can be started during the washing stage.

[0062] In one embodiment, the electric heating device 300 is disposed in the heat exchange air duct 110. In this way, during the drying stage, if the heat pump system 200 cannot meet the demand, the electric heating device 300 can also be started.

[0063] It is understandable that the heat exchange air duct 110 and the first pipeline 144 are both provided with an electric heating device 300, or an electric heating device 300 can be heated accordingly in both the washing stage and the drying stage. The electric heating device 300 generally includes an electric heating element, a control element and a protection element. The electric heating element is generally an electric heating wire, an electric heating tube or an electric heating plate, and the electric heating element is a key component for converting electrical energy into thermal energy. The control element is used to control the heating power and working state of the electric heating element, and generally includes a temperature sensor and a temperature controller, and the temperature controller is generally integrated with other control elements into a control device. The protection element is used to ensure the safe operation of the electric heating device 300 to prevent overheating or circuit failure, and generally includes an overheating protector and a leakage protector. When the dishwasher 10 requires additional heating, the control device receives a signal and heats the electric heating element. The electric heating element generates heat energy under the action of the current and transfers the heat energy to the surrounding fluid (usually water or air). The temperature sensor monitors the fluid temperature and feeds back information to the control device. The control element adjusts the heating power of the electric heating element according to the feedback information of the temperature sensor to keep the fluid temperature within the set range. If the temperature is too high or a fault occurs, the protection element will automatically disconnect the power supply to ensure safe operation.

[0064] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A dishwasher, characterized in that: include: The dishwasher body comprises an air inlet, a heat exchange air duct, a washing chamber, an exhaust port and a spray system, wherein the washing chamber is connected to the outside through the exhaust port, and the air inlet, the heat exchange air duct, the washing chamber and the exhaust port are connected in sequence; the spray system is used to spray washing water into the washing chamber; The heat pump system includes a compression device, a first heat exchange device and a second heat exchange device, wherein the first heat exchange device is arranged in the heat exchange air duct, the first heat exchange device includes a first heat exchange element and a first fan, and the compression device, the first heat exchange element and the second heat exchange device are connected in sequence to form a circulating heat exchange loop; the first fan is used to drive the airflow in the heat exchange air duct to pass through the first heat exchange element for heat exchange, so as to provide hot air to the washing chamber.

2. The dishwasher according to claim 1, characterized in that The dishwasher body comprises a shell, and the air inlet and the air outlet are arranged on the same side of the shell.

3. The dishwasher according to claim 2, characterized in that The second heat exchange device includes a second heat exchange element and a second fan, the second fan is used to supply air to the second heat exchange element, the outer shell is provided with an air outlet, the air outlet side of the second fan is connected to the air outlet, and the air outlet and the air inlet are arranged on different sides of the outer shell.

4. The dishwasher according to claim 1, characterized in that The dishwasher body comprises a first damper, which is movably arranged at the exhaust port; the first damper is used to close the exhaust port in the washing stage and to open the exhaust port in the drying stage.

5. The dishwasher according to claim 1, characterized in that The dishwasher body further comprises a second air door, which is movably arranged at the air inlet; the second air door is used to close the air inlet during the washing stage and to open the air inlet during the drying stage.

6. The dishwasher according to claim 1, characterized in that The dishwasher body includes an outer shell, an inner tank and a door body, the inner tank is arranged in the outer shell, the outer shell is provided with a first opening, the door body can be movably arranged on the outer shell to open or close the first opening, the washing chamber is defined between the inner tank and the door body, the heat exchange air duct is defined between the outer shell and the inner tank, and the exhaust port is provided on the door body and / or the outer shell.

7. The dishwasher according to claim 1, characterized in that The heat pump system further comprises a throttling device, which is arranged in the circulating heat exchange loop and located between the first heat exchange element and the second heat exchange device.

8. The dishwasher according to any one of claims 1 to 7, characterized in that The spray system comprises a spray assembly, a water cup and a water pump. The spray assembly is arranged in the washing chamber and is used to spray washing water into the washing chamber. The water cup is connected to the water pump, and the water pump is connected to the spray assembly through a first pipeline.

9. The dishwasher according to claim 8, characterized in that The dishwasher further comprises an electric heating device, which is arranged on the first pipeline and is used to heat the washing water in the first pipeline; And / or, the electric heating device is arranged in the heat exchange air duct.

10. The dishwasher according to claim 1, characterized in that The second heat exchange device is arranged outside the heat exchange air duct and the washing chamber.

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