Washing and drying apparatus

Abstract

The embodiment of the present application belongs to the technical field of household appliances, and particularly relates to a washing and drying device. The embodiment of the present application aims to solve the problem of large power consumption of related washing and drying devices. The washing and drying device of the embodiment of the present application comprises a washing cylinder, a compressor, a condenser, a throttling device, a first evaporator and a heat exchanger, the compressor, the condenser, the throttling device and the first evaporator form a circulating series connection, the compressor and the condenser are communicated through a first pipeline, and two ends of the heat exchanger are communicated with the first pipeline through a second pipeline and a third pipeline respectively; in the washing stage, the heat exchanger exchanges heat with water entering the washing cylinder. Through the above setting, in the washing stage, the heat pump system operates, and the heat released by the refrigerant at the heat exchanger heats the water about to enter the washing cylinder, so that the temperature of the water in the washing cylinder is increased. Compared with heating the water in the washing cylinder through an electric heater, the heat pump system is more energy-saving, and the energy consumption of the washing and drying device is reduced.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, specifically to a washing and drying device. Background Technology

[0002] Washing and drying equipment is an intelligent washing device that combines washing, spin-drying, and drying functions into one, based on a fully automatic washing machine with the addition of a drying function.

[0003] In related technologies, washing and drying equipment includes a housing, a washing drum, an electric heater, a fan, and a heat pump system housed within the housing. During the washing stage, the electric heater heats the water entering the washing drum to enhance the activity of washing enzymes. The fan and heat pump system are activated during the drying stage. The fan circulates air between the washing drum and the heat pump system, while the heat pump system converts the humid, hot air from the washing drum into dry, hot air. This dry, hot air flows over the surface of the clothes, heating them and carrying away evaporated moisture, thus drying the clothes quickly.

[0004] However, heating the water entering the washing drum with an electric heater consumes a lot of electricity. Summary of the Invention

[0005] To address the aforementioned problems in related technologies, specifically the high power consumption of related washing and drying equipment, this invention provides a washing and drying device comprising a washing drum, a compressor, a condenser, a throttling device, a first evaporator, and a heat exchanger. The washing drum is used to hold clothing. The compressor, condenser, throttling device, and first evaporator are connected in series in a loop. The compressor and condenser are connected via a first pipeline. The inlet of the heat exchanger is connected to a second pipeline, and the outlet of the heat exchanger is connected to a third pipeline. The ends of both the second and third pipelines are connected to the first pipeline, with the second pipeline being closer to the compressor than the third pipeline. The heat exchanger is used for heat exchange with water entering the washing drum. Valve assemblies are provided on the first and second pipelines. During the washing stage, the valve assemblies are used to open the second and third pipelines and close the first pipeline between the second and third pipelines; during the drying stage, the second pipeline is closed, and the first pipeline is open.

[0006] In the preferred embodiment of the above-mentioned washing and drying equipment, the valve assembly includes a reversing valve, which is disposed at the junction of the second pipeline and the first pipeline. The reversing valve has an air inlet, a first air outlet, and a second air outlet. The air inlet is connected to the compressor, the first air outlet is connected to the heat exchanger, and the second air outlet is connected to the condenser. During the washing stage, the air inlet is connected to the first air outlet; during the drying stage, the air inlet is connected to the second air outlet.

[0007] In the preferred embodiment of the washing and drying equipment described above, a one-way valve is provided on the third pipeline, which is used to prevent refrigerant from flowing from the first pipeline to the outlet of the heat exchanger.

[0008] In the preferred embodiment of the washing and drying equipment described above, the washing and drying equipment further includes a water inlet pipe, one end of which is connected to the washing drum, and the other end of which is connected to a water source. The heat exchanger is used to exchange heat with the water in the water inlet pipe.

[0009] In the preferred embodiment of the above-mentioned washing and drying equipment, an inlet valve is provided on the inlet pipe.

[0010] In the preferred embodiment of the washing and drying equipment described above, the washing and drying equipment further includes a second evaporator and a cooling device. The inlet of the cooling device is connected to the outlet of the compressor, the outlet of the cooling device is connected to the inlet of the second evaporator, and the outlet of the second evaporator is connected to the inlet of the compressor.

[0011] In the preferred embodiment of the above-mentioned washing and drying equipment, the cooling device includes a vortex tube, which has a high-temperature inlet, a high-temperature outlet, and a low-temperature outlet. The high-temperature inlet is connected to the compressor, the high-temperature outlet is connected to the condenser, and the low-temperature outlet is connected to the second evaporator.

[0012] In the preferred embodiment of the above-mentioned washing and drying equipment, the first evaporator is connected to the compressor via a fourth pipeline, and the second evaporator is connected to the fourth pipeline via a fifth pipeline.

[0013] In the preferred embodiment of the washing and drying equipment described above, the washing drum has an air inlet side and an air outlet side, and the washing and drying equipment further includes a fan. The fan is used to circulate air between the washing drum, the second evaporator, the first evaporator, and the condenser during the drying stage, and the air flows from the air inlet side to the air outlet side.

[0014] In the preferred embodiment of the washing and drying equipment described above, the washing and drying equipment further includes a driving device, which is connected to the washing drum in a transmission manner, and is used to drive the washing drum to rotate around its own axis.

[0015] In the preferred embodiment of the above-mentioned washing and drying equipment, the driving device includes a drive motor and a belt, the belt being sleeved on the outer wall of the washing drum, and the drive motor being connected to the belt drive.

[0016] Those skilled in the art will understand that the washing and drying equipment of this embodiment includes a washing drum, a compressor, a condenser, a throttling device, a first evaporator, and a heat exchanger. The washing drum is used to hold clothes. The compressor, condenser, throttling device, and first evaporator are connected in series in a loop. The compressor and condenser are connected through a first pipe. The inlet of the heat exchanger is connected to a second pipe, and the outlet of the heat exchanger is connected to a third pipe. The ends of both the second and third pipes are connected to the first pipe, and the second pipe is closer to the compressor than the third pipe. During the washing stage, the second and third pipes are open, and the first pipe between the second and third pipes is closed. The heat exchanger is used to exchange heat with the water entering the washing drum. During the drying stage, both the second and third pipes are closed, and the first pipe is open. With the above configuration, during the washing stage, the heat pump system operates, and the heat released by the refrigerant at the heat exchanger heats the water about to enter the washing drum, raising the temperature of the water in the washing drum. Compared with heating the water in the washing drum by an electric heater, the heat pump system is more energy-efficient, reducing the energy consumption of the washing and drying equipment. Attached Figure Description

[0017] A preferred embodiment of the washing and drying apparatus of the present invention will now be described with reference to the accompanying drawings. The drawings are as follows:

[0018] Figure 1 This is a schematic diagram of the heat pump system in the washing and drying equipment according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the washing and drying equipment according to an embodiment of the present invention.

[0020] In the attached image:

[0021] 100. Washer drum; 101. Air inlet side;

[0022] 102. Air outlet side; 210. Compressor;

[0023] 220. Condenser; 230. Throttling device;

[0024] 240. First evaporator; 250. Second evaporator;

[0025] 260. Heat exchanger; 270. Vortex tube;

[0026] 201. First pipeline; 202. Second pipeline;

[0027] 203. Third pipeline; 204. Fourth pipeline;

[0028] 205. Fifth pipeline; 206. Reversing valve;

[0029] 207. Check valve; 300. Inlet pipe;

[0030] 301. Inlet valve; 400. Fan;

[0031] 510. Drive motor; 520. Belt. Detailed Implementation

[0032] First, those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0033] Secondly, it should be noted that in the description of the embodiments of the present invention, the terms "inner" and "outer", etc., which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of the present invention.

[0034] Furthermore, it should be noted that, in the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Washing and drying equipment integrates the functions of a washing machine and a dryer, which can wash, rinse and spin-dry clothes, and dry clothes after spin-drying.

[0037] The washing and drying equipment in the related technology includes a housing, a washing drum, an electric heater, a fan, and a heat pump system installed inside the housing. During the washing stage, the electric heater works, while the fan and heat pump system do not work. The electric heater is used to heat the water entering the washing drum. Appropriately increasing the water temperature can enhance the activity of washing enzymes, thereby improving the efficiency of removing stains from clothes and making the washed clothes cleaner.

[0038] During the drying stage, the fan and heat pump system operate, while the electric heater does not. The heat pump system includes a compressor, condenser, expansion valve, and evaporator. The compressor, condenser, expansion valve, and evaporator are connected by pipes through which refrigerant flows. The compressor compresses the low-pressure gaseous refrigerant into a high-pressure gaseous refrigerant. The high-pressure gaseous refrigerant is sent to the condenser, where it dissipates heat and becomes a high-pressure liquid refrigerant. It then enters the evaporator through the expansion valve. The high-pressure liquid refrigerant exiting the condenser decreases in pressure as it passes through the expansion valve again, becoming a low-pressure liquid refrigerant. This low-pressure liquid refrigerant enters the evaporator, where it absorbs heat and becomes a low-pressure gaseous refrigerant. The low-pressure gaseous refrigerant flows back to the compressor, which compresses it again into a high-pressure gaseous refrigerant. This cycle repeats, causing the refrigerant to release heat and condense in the condenser, and evaporate and absorb heat in the evaporator.

[0039] The washing drum includes an air inlet and an air outlet. The air inlet is located near the condenser, and the air outlet is located near the evaporator. A fan directs air from the air outlet to the evaporator and then to the condenser, before returning it to the washing drum from the air inlet. The hot, humid air discharged from the air outlet condenses into cool, dry air at the evaporator. This cool, dry air is then heated into hot, dry air at the condenser. The hot, dry air returns to the washing drum from the air inlet, flowing over the surface of the clothes, heating them and carrying away the moisture that has evaporated from the clothes, thus drying them quickly.

[0040] However, using an electric heater to heat the water entering the washing drum during the washing stage increases the power consumption of the washing and drying equipment.

[0041] This embodiment provides a washing and drying device. By setting a heat exchanger between the compressor and the condenser, the heat pump system operates during the washing stage. The high-pressure gaseous refrigerant discharged from the compressor flows to the heat exchanger, where it exchanges heat with the water entering the washing drum to heat the water. Compared with heating the water in the washing drum by an electric heater, the heat pump system is more energy-efficient and reduces the power consumption of the washing and drying device.

[0042] The principles and features of the embodiments of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the embodiments of the present invention and are not intended to limit the scope of the embodiments of the present invention.

[0043] like Figure 1 As shown, the washing and drying equipment provided in this embodiment of the invention includes a housing, a washing drum 100 disposed within the housing, and a heat pump system. The heat pump system includes a compressor 210, a condenser 220, a throttling device 230, a first evaporator 240, and a heat exchanger 260. The washing drum 100 is used to hold clothes, and the axis of the washing drum 100 can be parallel to the horizontal plane.

[0044] The compressor 210, condenser 220, throttling device 230, and first evaporator 240 are connected in series via a pipeline, through which refrigerant flows. The compressor 210 and condenser 220 are connected via a first pipeline 201. The heat exchanger 260 has an inlet and an outlet. The inlet of the heat exchanger 260 is connected to one end of the second pipeline 202, and the other end of the second pipeline 202 is connected to the first pipeline 201. The outlet of the heat exchanger 260 is connected to one end of the third pipeline 203, and the other end of the third pipeline 203 is also connected to the first pipeline 201. The third pipeline 203 is further away from the compressor 210 than the second pipeline 202.

[0045] The throttling device 230 may include a throttling valve, a capillary tube, etc., as long as it can convert high-pressure refrigerant into low-pressure refrigerant.

[0046] A valve assembly is provided on the first pipe 201 and the second pipe 202. The valve assembly is used to connect the second pipe 202 and the third pipe 203 and close the first pipe 201 located between the second pipe 202 and the third pipe 203 during the washing stage. The valve assembly is also used to close the second pipe 202 and connect the first pipe 201 during the drying stage.

[0047] During the washing phase, the heat pump system operates, the second pipe 202 and the third pipe 203 are connected, the first pipe 201 between the second pipe 202 and the third pipe 203 is closed, the first pipe 201 between the compressor 210 and the second pipe 202 is connected, and the first pipe 201 between the third pipe 203 and the condenser 220 is also connected.

[0048] Compressor 210 compresses low-pressure gaseous refrigerant into high-pressure gaseous refrigerant. The high-pressure gaseous refrigerant is transported along the first pipe 201 between compressor 210 and the second pipe 202, and through the second pipe 202, to heat exchanger 260. Heat exchanger 260 exchanges heat with the water about to enter the washing drum 100, lowering the refrigerant temperature. High-pressure liquid refrigerant is then output from the outlet of heat exchanger 260. This high-pressure liquid refrigerant flows along the third pipe 203 and the first pipe 201 between the third pipe 203 and condenser 220 to condenser 220. At condenser 220, the refrigerant is heated... Only a very small amount of heat is released by the refrigerant. The high-pressure liquid refrigerant discharged from the condenser 220 is reduced in pressure after passing through the throttling device 230 and becomes a low-pressure liquid refrigerant. The low-pressure liquid refrigerant enters the first evaporator 240 and absorbs heat at the first evaporator 240 to become a low-pressure gaseous refrigerant. The low-pressure gaseous refrigerant discharged from the first evaporator 240 flows to the compressor 210, which compresses the low-pressure gaseous refrigerant into a high-pressure gaseous refrigerant. This cycle continues, so that the refrigerant releases most of its heat at the heat exchanger 260, while only a very small amount of heat is released at the condenser 220.

[0049] The heat released by the refrigerant at the heat exchanger 260 heats the water about to enter the washing drum 100, raising the temperature of the water inside the washing drum 100. Compared with heating the water inside the washing drum 100 by an electric heater, the heat pump system is more energy-efficient and reduces the energy consumption of the washing and drying equipment.

[0050] During the drying stage, the heat pump system remains operational, with the second pipe 202 and the third pipe 203 closed, while the entire first pipe 201 (the first pipe 201 between the compressor 210 and the second pipe 202, the first pipe 201 between the second pipe 202 and the third pipe 203, and the first pipe 201 between the third pipe 203 and the condenser 220) is open.

[0051] Compressor 210 compresses low-pressure gaseous refrigerant into high-pressure gaseous refrigerant. The high-pressure gaseous refrigerant is delivered to condenser 220, where it dissipates heat and becomes high-pressure liquid refrigerant. The high-pressure liquid refrigerant is then reduced in pressure by throttling device 230, becoming low-pressure liquid refrigerant. The low-pressure liquid refrigerant enters first evaporator 240, where it absorbs heat and becomes low-pressure gaseous refrigerant. The low-pressure gaseous refrigerant discharged from first evaporator 240 flows to compressor 210, which compresses it into high-pressure gaseous refrigerant. This cycle repeats, causing the refrigerant to release heat and condense at condenser 220, and evaporate and absorb heat at first evaporator 240.

[0052] like Figure 2As shown, the washing drum 100, the first evaporator 240, and the condenser 220 are connected by an air duct. The airflow direction in the air duct is from the washing drum 100, the first evaporator 240, and the condenser 220, and then returns from the condenser 220 to the washing drum 100. Figure 2 The dashed arrows indicate the airflow direction. The washing drum 100 has an air inlet side 101 and an air outlet side 102. The hot and humid air discharged from the air outlet side 102 is cooled and condensed at the first evaporator 240 to become dry and cold air. The dry and cold air is heated at the condenser 220 to become dry and hot air. The dry and hot air returns to the washing drum 100 from the air inlet side 101. The dry and hot air flows over the surface of the clothes, heats the clothes and carries away the moisture evaporated from the clothes, so that the clothes dry quickly.

[0053] It is worth noting that during the washing stage, the heat pump system operates, which raises the temperature of the air in the duct. As a result, during the drying stage, the initial temperature of the air in the duct is higher (above room temperature), which can shorten the drying time. A shorter drying time will reduce power consumption and also speed up the drying process.

[0054] The washing and drying equipment in this embodiment includes a washing drum 100, a compressor 210, a condenser 220, a throttling device 230, a first evaporator 240, and a heat exchanger 260. The washing drum 100 is used to hold clothes. The compressor 210, condenser 220, throttling device 230, and first evaporator 240 are connected in series in a loop. The compressor 210 and condenser 220 are connected through a first pipe 201. The inlet of the heat exchanger 260 is connected to a second pipe 202, and the outlet of the heat exchanger 260 is connected to a third pipe. 203. The ends of the second pipe 202 and the third pipe 203 are both connected to the first pipe 201, and the second pipe 202 is closer to the compressor 210 than the third pipe 203. During the washing stage, the second pipe 202 and the third pipe 203 are connected, and the first pipe 201 between the second pipe 202 and the third pipe 203 is closed. The heat exchanger 260 is used to exchange heat with the water entering the washing drum 100. During the drying stage, both the second pipe 202 and the third pipe 203 are closed, and the first pipe 201 is connected. With the above configuration, during the washing stage, the heat pump system operates, and the heat released by the refrigerant at the heat exchanger 260 heats the water about to enter the washing drum 100, raising the temperature of the water in the washing drum 100. Compared with heating the water in the washing drum 100 by an electric heater, the heat pump system is more energy-efficient and reduces the energy consumption of the washing and drying equipment.

[0055] Continue to refer to Figure 1In some embodiments, the valve assembly may include a reversing valve 206 disposed at the junction of the second pipeline 202 and the first pipeline 201. The reversing valve 206 has an inlet, a first outlet and a second outlet. The inlet is connected to the compressor 210, the first outlet is connected to the heat exchanger 260 and the second outlet is connected to the condenser 220.

[0056] During the washing stage, the air inlet is connected to the first air outlet, while the air inlet and the second air outlet are sealed, so that the high-pressure gaseous refrigerant discharged by the compressor 210 flows from the first air outlet to the second pipeline 202 and the heat exchanger 260, where it is heated with the water that is about to enter the drum.

[0057] During the drying stage, the air inlet is closed to the first air outlet, while the air inlet is connected to the second air outlet, so that the high-pressure gaseous refrigerant discharged by the compressor 210 flows from the second air outlet to the condenser 220, where it releases heat and exchanges heat with the dry and cold air from the first evaporator 240, so that the dry and cold air is converted into dry and hot air and blown into the washing drum 100 to dry the clothes in the washing drum 100.

[0058] In some implementations, the valve assembly may include a first valve and a second valve. The first valve may be located on the second pipe 202, and the second valve may be located on the first pipe 201 between the second pipe 202 and the third pipe 203.

[0059] During the washing stage, the first valve is controlled to open the second pipe 202, and the second valve is controlled to close the first pipe 201 between the second pipe 202 and the third pipe 203. The high-pressure gaseous refrigerant discharged from the compressor 210 flows along the second pipe 202 to the heat exchanger 260, where it is heated with the water that is about to enter the drum.

[0060] During the drying stage, the first valve is controlled to close the second pipe 202, and the second valve is controlled to open the first pipe 201 between the second pipe 202 and the third pipe 203. The high-pressure gaseous refrigerant discharged from the compressor 210 flows to the condenser 220, where heat is released. The condenser 220 exchanges heat with the dry and cold air from the first evaporator 240, converting the dry and cold air into dry and hot air, which is then blown into the washing drum 100 to dry the clothes inside the washing drum 100.

[0061] Continue to refer to Figure 1A one-way valve 207 is installed on the third pipe 203. The one-way valve 207 ensures that the refrigerant can only flow from the heat exchanger 260 to the first pipe 201, but not from the first pipe 201 to the heat exchanger 260. In other words, during the drying stage, the one-way valve 207 closes the third pipe 203 to prevent the refrigerant from flowing from the first pipe 201 to the outlet of the heat exchanger 260.

[0062] In some implementations, the aforementioned washing and drying equipment may further include a water inlet pipe 300, one end of which is connected to the washing drum 100, and the other end of which is connected to a water source (such as a tap water pipe). A water inlet valve 301 may be installed on the water inlet pipe 300. During the washing stage, the water inlet valve 301 is opened to allow water to flow from the water inlet pipe 300 into the washing drum 100. The water inlet pipe 300 may be in contact with the surface of the heat exchanger 260. The temperature of the water inlet pipe 300 is lower than that of the heat exchanger 260. The refrigerant in the heat exchanger 260 exchanges heat with the water in the water inlet pipe 300, raising the temperature of the water in the water inlet pipe 300. The heated water flows into the washing drum 100. The hot water can increase the activity of the washing enzymes, thereby improving the efficiency of removing stains from clothes and making the washed clothes cleaner.

[0063] In some other implementations, the aforementioned washing and drying equipment may also include a water inlet tank having an inlet and a outlet. The inlet is connected to a water source (such as a tap water pipe), and the outlet is connected to the washing drum 100. The heat exchanger 260 may be housed within the water inlet tank.

[0064] During the washing stage, the water inlet is opened, and water flows into the water tank from the water inlet. The heat exchanger 260 exchanges heat with the water in the water tank, causing the water temperature in the water tank to rise. After the water temperature reaches the set temperature, the drain outlet is opened to deliver the hot water in the water tank into the washing drum 100.

[0065] Continue to refer to Figure 1 In some embodiments, the washing and drying equipment may further include a second evaporator 250 and a cooling device, wherein the inlet of the cooling device is connected to the outlet of the compressor 210, the outlet of the cooling device is connected to the inlet of the second evaporator 250, and the outlet of the second evaporator 250 is connected to the inlet of the compressor 210.

[0066] The cooling device is used to cool the refrigerant, causing it to change from a gaseous state to a liquid state. High-pressure gaseous refrigerant discharged from compressor 210 enters the cooling device, where it is cooled and becomes liquid. The liquid refrigerant flows to the second evaporator 250, where it absorbs heat and evaporates into liquid refrigerant. The liquid refrigerant then flows to compressor 210, which compresses the refrigerant into a high-pressure gaseous state, and the cycle continues.

[0067] Continue to refer to Figure 2The washing drum 100, the second evaporator 250, the first evaporator 240, and the condenser 220 are connected by an air duct. The hot and humid air discharged from the air outlet 102 is first cooled at the second evaporator 250 and becomes saturated humid air. Then it is cooled at the first evaporator 240 and condenses into water to become dry and cold air. The dry and cold air is heated at the condenser 220 to become dry and hot air. The dry and hot air returns to the washing drum 100 from the air inlet 101. The dry and hot air flows over the surface of the clothes, heats the clothes and carries away the water evaporated from the clothes, so that the clothes dry quickly.

[0068] The hot, humid air discharged from the washing drum 100 is first cooled at the second evaporator 250, and then at the first evaporator 240. This allows the air discharged from the washing drum 100 to be cooled more effectively and condense moisture. This increases the dryness of the air returning from the heat pump system to the washing drum 100. The drier air can remove more moisture from the surface of the clothes, thereby speeding up the drying process and shortening the drying time.

[0069] Continue to refer to Figure 1 The aforementioned cooling device may include a vortex tube 270 or other devices that can lower the temperature of the refrigerant. The vortex tube 270 has a high-temperature inlet, a high-temperature outlet, and a low-temperature outlet. The high-temperature inlet is connected to the compressor 210, the high-temperature outlet is connected to the condenser 220, and the low-temperature outlet is connected to the second evaporator 250.

[0070] During the washing stage, the high-temperature inlet and high-temperature outlet are opened, and the low-temperature outlet is closed. High-pressure gaseous refrigerant from compressor 210 enters the vortex tube 270 from the high-temperature inlet and flows to heat exchanger 260 from the high-temperature outlet.

[0071] During the drying stage, the high-temperature inlet and the low-temperature outlet are opened, and the high-temperature outlet is closed. The high-pressure gaseous refrigerant from the compressor 210 enters the vortex tube 270 from the high-temperature inlet and discharges the low-pressure liquid refrigerant from the low-temperature outlet, flowing to the second heat exchanger 260.

[0072] The first evaporator 240 and the compressor 210 can be connected through the fourth pipe 204, and the outlet of the second evaporator 250 can be connected to the fourth pipe 204 through the fifth pipe 205. In this way, during the drying stage, the low-pressure gaseous refrigerant discharged from the second evaporator 250 mixes with the low-pressure gaseous refrigerant discharged from the first evaporator 240 in the fourth pipe 204 and flows to the inlet of the compressor 210.

[0073] Continue to refer to Figure 2 The aforementioned washing and drying equipment may also include a fan 400, which is used to circulate air between the washing drum 100, the second evaporator 250, the first evaporator 240 and the condenser 220 during the drying stage, with the air flowing from the air inlet side 101 to the air outlet side 102.

[0074] In some embodiments, the washing and drying equipment may further include a drive device, which is connected to the washing drum 100 in a transmission manner, and is used to drive the washing drum 100 to rotate about its own axis.

[0075] The driving device may include a drive motor 510, which has a motor shaft that passes through the washing drum 100. The axis of the motor shaft may be collinear with the axis of the washing drum 100. When the drive motor 510 is working, the motor shaft rotates, which drives the washing drum 100 to rotate. During the rotation of the washing drum 100, hot dry air can flow over all parts of the surface of the clothes, making the clothes dry more evenly.

[0076] Continue to refer to Figure 2 In some other embodiments, the driving device may include a drive motor 510 and a belt 520. The belt 520 is sleeved on the outside of the washing drum 100 and is connected to the drive motor 510 in a transmission manner. The drive motor 510 drives the belt 520 to rotate, thereby driving the washing drum 100 to rotate.

[0077] In summary, the washing and drying equipment of this embodiment includes a washing drum 100, a compressor 210, a condenser 220, a throttling device 230, a first evaporator 240, and a heat exchanger 260. The washing drum 100 is used to hold clothes. The compressor 210, condenser 220, throttling device 230, and first evaporator 240 are connected in series in a loop. The compressor 210 and condenser 220 are connected through a first pipe 201. The inlet of the heat exchanger 260 is connected to a second pipe 202, and the outlet of the heat exchanger 260 is connected to a third pipe 202. Pipeline 203, the second pipeline 202, and the third pipeline 203 all connect to the first pipeline 201, with the second pipeline 202 closer to the compressor 210 than the third pipeline 203. During the washing stage, the second pipeline 202 and the third pipeline 203 are connected, while the first pipeline 201 between the second pipeline 202 and the third pipeline 203 is closed. The heat exchanger 260 is used for heat exchange with the water entering the washing drum 100. During the drying stage, both the second pipeline 202 and the third pipeline 203 are closed, while the first pipeline 201 is connected. With the above configuration, during the washing stage, the heat pump system operates, and the heat released by the refrigerant at the heat exchanger 260 heats the water about to enter the washing drum 100, raising the temperature of the water in the washing drum 100. Compared with heating the water in the washing drum 100 using an electric heater, the heat pump system is more energy-efficient, reducing the energy consumption of the washing and drying equipment.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A washing and drying apparatus, characterized by, The washing and drying device comprises a washing drum, a compressor, a condenser, a throttling device, a first evaporator and a heat exchanger, the washing drum is used for accommodating clothes; The compressor, the condenser, the throttling device and the first evaporator form a circulation series connection, the compressor is communicated with the condenser through a first pipeline, an inlet of the heat exchanger is connected with a second pipeline, an outlet of the heat exchanger is connected with a third pipeline, the second pipeline and the third pipeline are both communicated with the first pipeline, and the second pipeline is closer to the compressor than the third pipeline; The heat exchanger is used for heat exchange with water entering the washing drum; A valve assembly is arranged on the first pipeline and the second pipeline, the valve assembly is used for, in a washing stage, making the second pipeline and the third pipeline conductive, and making the first pipeline between the second pipeline and the third pipeline closed; In a drying stage, the second pipeline is closed, and the first pipeline is made conductive; The washing and drying device further comprises a second evaporator and a cooling device, an outlet of the compressor is communicated with an inlet of the cooling device, an outlet of the cooling device is communicated with an inlet of the second evaporator, and an outlet of the second evaporator is communicated with an inlet of the compressor; The cooling device comprises a vortex tube, the vortex tube has a high-temperature inlet, a high-temperature outlet and a low-temperature outlet, the high-temperature inlet is communicated with the compressor, the high-temperature outlet is communicated with the condenser, and the low-temperature outlet is communicated with the second evaporator; The washing drum has an air inlet side and an air outlet side, and the washing and drying device further comprises a fan, the fan is used for, in a drying stage, making air flow between the washing drum, the second evaporator, the first evaporator and the condenser, and the flow direction of the air is from the air inlet side to the air outlet side. The valve assembly comprises a reversing valve, the reversing valve is arranged at the junction of the second pipeline and the first pipeline, the reversing valve has an air inlet, a first air outlet and a second air outlet, the air inlet is communicated with the compressor, the first air outlet is communicated with the heat exchanger, and the second air outlet is communicated with the condenser; 2. The washing and drying apparatus according to claim 1, characterized by In a washing stage, the air inlet is communicated with the first air outlet; in a drying stage, the air inlet is communicated with the second air outlet. A one-way valve is arranged on the third pipeline, the one-way valve is used for preventing refrigerant from flowing from the first pipeline to the outlet of the heat exchanger.

3. The washing drying apparatus according to claim 1, characterized by The washing and drying device further comprises a water inlet pipe, one end of the water inlet pipe is communicated with the washing drum, the other end of the water inlet pipe is used for being communicated with a water source, and the heat exchanger is used for heat exchange with water in the water inlet pipe.

4. The washing and drying apparatus according to any one of claims 1 to 3, characterized in that, The first evaporator is communicated with the compressor through a fourth pipeline, and the second evaporator is communicated with the fourth pipeline through a fifth pipeline.

5. The washing and drying apparatus according to claim 4, characterized in that, The washing and drying device further comprises a driving device, the driving device is drivingly connected with the washing drum, and the driving device is used for driving the washing drum to rotate around an axis of the washing drum.

6. The washing drying apparatus according to claim 1, wherein The driving device comprises a driving motor and a belt, the belt is sleeved on an outer wall of the washing drum, and the driving motor is drivingly connected with the belt.

7. The washing drying apparatus according to claim 6, characterized by ​

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