Laundry treating apparatus

Abstract

The embodiment of the invention relates to clothes treatment equipment. The clothes treatment equipment comprises a box body, a clothes treatment drum arranged in the box body and a heat pump heat exchange system, a heat exchange channel is arranged between the box body and the clothes processing drum, and the heat exchange channel is communicated with an inner cavity of the clothes processing drum; the heat pump heat exchange system comprises a compressor, an evaporator and a condenser; at least part of the heat pump heat exchange system is located in the heat exchange channel. The heat exchange structure is further arranged in the box body and used for heating the heat exchange medium flowing out of the heat exchange medium outlet of the evaporator, so that the air inlet temperature of the compressor is increased, and then the drying efficiency of the clothes dryer is improved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of household appliances, and in particular, to a clothing treatment device. Background Art

[0002] Currently, a heat pump heat exchange system is usually provided in clothing treatment devices such as clothes dryers on the market. A heat exchange medium flows in the heat pump heat exchange system, and the heat exchange medium can exchange heat with air to achieve effects such as drying or moisture extraction of the air, thereby drying the clothes in the clothes dryer. However, the drying efficiency of the clothes dryer in the related art cannot meet the requirements. Summary of the Invention

[0003] In order to solve the above technical problems or at least partially solve the above technical problems, embodiments of the present invention provide a clothing treatment device.

[0004] Embodiments of the present invention provide a clothing treatment device, including a box body, a clothing treatment cylinder provided in the box body, and a heat pump heat exchange system;

[0005] There is a heat exchange channel between the box body and the clothing treatment cylinder, and the heat exchange channel is communicated with the inner cavity of the clothing treatment cylinder; the heat pump heat exchange system includes a compressor, an evaporator, and a condenser; at least part of the heat pump heat exchange system is located in the heat exchange channel;

[0006] A heat exchange structure is further provided in the box body, and the heat exchange structure is used to heat the heat exchange medium flowing out of the heat exchange medium outlet of the evaporator.

[0007] For the clothing treatment device provided by the embodiments of the present invention, by providing a heat exchange structure in the box body, the heat exchange structure is used to heat the heat exchange medium flowing out of the heat exchange medium outlet of the evaporator, so that the temperature of the heat exchange medium at the heat exchange medium inlet flowing into the compressor is increased, that is, the intake air temperature of the compressor is increased, thereby reducing the energy consumption of the compressor, and further improving the drying efficiency. Moreover, since the heat exchange structure can heat the heat exchange medium flowing out of the evaporator, it can increase the superheat degree of the heat exchange medium flowing from the heat exchange medium outlet of the evaporator into the compressor to a certain extent, and can make the heat exchange medium flowing out of the evaporator absorb heat and turn into a gas state and be sent back to the compressor as much as possible. Furthermore, it can avoid the situation that the liquid heat exchange medium in the heat exchange medium sent back to the compressor causes damage to structures such as cylinders in the compressor, protects the compressor, and further ensures the drying efficiency.

[0008] In some embodiments, the heat exchange structure includes an energy storage member and a heating channel;

[0009] The energy storage element is in heat exchange contact with the heating channel, and the heating channel is respectively communicated with the heat exchange medium outlet of the evaporator and the heat exchange medium inlet of the compressor.

[0010] In some embodiments, the heat exchange structure has a first heat exchange tube, the inner cavity of the first heat exchange tube forms the heating channel, and the energy storage element is a phase change material layer provided on the outer wall of the first heat exchange tube.

[0011] In some embodiments, a first flow path and a second flow path are connected between the heat exchange medium outlet of the evaporator and the heat exchange medium inlet of the compressor, and the first flow path and the second flow path are connected in parallel;

[0012] The heating channel is provided on the second flow path and is communicated with the second flow path.

[0013] In some embodiments, a first control and adjustment element is further provided between the heat exchange medium outlet of the evaporator and the heat exchange medium inlet of the compressor, and the first control and adjustment element is used to adjust the opening and closing states of the first flow path and the second flow path.

[0014] In some embodiments, a first temperature detection element is provided in the box body;

[0015] The first temperature detection element is used to detect the temperature at the heat exchange medium outlet of the evaporator, so that when the detected temperature is less than the first preset temperature threshold, the second flow path is turned on and the first flow path is turned off, and when the detected temperature is greater than or equal to the first preset temperature threshold, the second flow path is turned off and the first flow path is turned on.

[0016] In some embodiments, the heat exchange structure includes a cooling channel, and the cooling channel is respectively communicated with the heat exchange medium outlet of the condenser and the heat exchange medium inlet of the evaporator to reduce the temperature of the heat exchange medium flowing out of the heat exchange medium outlet of the condenser.

[0017] In some embodiments, the heat exchange structure has a second heat exchange tube, the inner cavity of the second heat exchange tube forms the cooling channel, and a phase change material layer is provided on the outer wall of the second heat exchange tube.

[0018] In some embodiments, a third flow path and a fourth flow path are connected between the heat exchange medium outlet of the condenser and the heat exchange medium inlet of the evaporator, and the third flow path and the fourth flow path are connected in parallel;

[0019] The cooling channel is provided on the fourth flow path and is communicated with the fourth flow path.

[0020] In some embodiments, a second control and adjustment member is further disposed between the heat exchange medium outlet of the condenser and the heat exchange medium inlet of the evaporator, and the second control and adjustment member is configured to adjust the opening and closing states of the third flow path and the fourth flow path.

[0021] In some embodiments, the heat pump heat exchange system further includes a second temperature detection member;

[0022] The second temperature detection member is configured to detect the temperature at the heat exchange medium outlet of the condenser, so as to make the fourth flow path conductive and the third flow path shut off when the detected temperature is greater than a second preset temperature threshold, and make the fourth flow path shut off and the third flow path conductive when the detected temperature is less than or equal to the second preset temperature threshold.

[0023] In some embodiments, a throttling member is further disposed between the heat exchange medium outlet of the condenser and the heat exchange medium inlet of the evaporator. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present invention, and are used together with the specification to explain the principles of the embodiments of the present invention.

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a partial structural schematic diagram of the laundry treatment device according to the embodiment of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the connection between the heat pump heat exchange system and the heat exchange structure according to the embodiment of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the heat exchange structure connected between the heat exchange medium outlet of the evaporator and the heat exchange medium inlet of the compressor according to the embodiment of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the connection between the compressor, the condenser and the heat exchange structure according to the embodiment of the present invention.

[0030] Among them, 100 is a heat pump heat exchange system; 200 is a laundry treatment drum; 300 is a heat exchange channel; 1 is a compressor; 2 is an evaporator; 3 is a condenser; 4 is a first flow path; 5 is a second flow path; 6 is a first control and adjustment member; 7 is a first temperature detection member; 8 is a third flow path; 9 is a fourth flow path; 10 is a second control and adjustment member; 11 is a second temperature detection member; 12 is a throttling member; 13 is a temperature sensor; 14 is a common flow section; 400 is a heat exchange structure; 401 is an energy storage member; 402 is a first heat exchange tube; 4021 is a heating channel; 403 is a second heat exchange tube; 4031 is a cooling channel. Detailed implementation manners

[0031] In order to more clearly understand the above-mentioned objects, features, and advantages of the embodiments of the present invention, the solutions of the embodiments of the present invention will be further described below. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] In the following description, many specific details are set forth in order to fully understand the embodiments of the present invention, but the embodiments of the present invention can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present invention, rather than all the embodiments.

[0033] Referring to Figures 1 to 4 As shown, this embodiment provides a laundry treatment device, which can be, for example, a dryer, a washing and drying integrated machine, etc. The laundry treatment device includes: a cabinet (not shown in the figure), a laundry treatment drum 200, and a heat pump heat exchange system 100.

[0034] Among them, both the laundry treatment drum 200 and the heat pump heat exchange system 100 are arranged in the cabinet. There is a heat exchange channel 300 between the cabinet and the laundry treatment drum 200, and the heat exchange channel 300 is communicated with the inner cavity of the laundry treatment drum 200.

[0035] Specifically, the heat pump heat exchange system 100 includes a compressor 1, an evaporator 2, and a condenser 3. Among them, the compressor 1 is connected between the heat exchange medium inlet of the condenser 3 and the heat exchange medium outlet of the evaporator 2, and the heat exchange medium outlet of the condenser 3 is connected to the heat exchange medium inlet of the evaporator 2. At least part of the heat pump heat exchange system 100 is located in the heat exchange channel 300.

[0036] Among them, the condenser 3 can include a condensing pipe and a plurality of condensing fins. The plurality of condensing fins can be arranged at intervals respectively. The condensing pipe sequentially penetrates through the plurality of condensing fins, and a heat exchange medium flows in the condensing pipe. The evaporator 2 can include an evaporation pipe and a plurality of evaporation fins. The plurality of evaporation fins can be arranged at intervals respectively. The evaporation pipe sequentially penetrates through the plurality of evaporation fins, and a heat exchange medium flows in the evaporation pipe.

[0037] The laundry treating device may further include a driving structure, such as a driving motor, which is electrically connected to the laundry treating drum 200 and is used to drive the laundry treating drum 200 to rotate. For example, a blower may be disposed in the heat exchange channel 300, and the driving structure is electrically connected to the blower. Under the action of the blower, air flows between the heat exchange channel 300 and the laundry treating drum 200, and the air is heat-exchanged by the heat pump heat exchange system 100, thereby realizing drying of the laundry in the laundry treating drum 200.

[0038] The laundry treating drum 200 may be, for example, an inner drum, or the laundry treating drum 200 includes an inner drum and an outer tub (not shown in the figure) sleeved outside the inner drum. There is a gap between the outer tub and the inner drum, and the driving structure can drive the inner drum to rotate. The inner drum is provided with a laundry inlet. During laundry treatment, laundry and the like can be put into the laundry treating drum 200 through the laundry inlet, and the driving structure drives the laundry treating drum 200 to rotate to realize laundry treatment.

[0039] Wherein, a heat exchange structure 400 is further disposed in the box body, and the heat exchange structure 400 is used to heat the heat exchange medium flowing out from the heat exchange medium outlet of the evaporator 2. This can improve the intake air temperature of the compressor 1, thereby improving the drying efficiency, and also increases the superheat degree of the heat exchange medium flowing from the heat exchange medium outlet of the evaporator 2 into the compressor 1, protecting the compressor 1.

[0040] Exemplarily, Figures 1 to 2 the solid arrows in are the circulation flow paths of the heat exchange medium, Figure 1 the dashed arrows in are the circulation flow paths of the air. When the heat pump heat exchange system 100 operates, the compressor 1 sucks in a low-pressure gaseous heat exchange medium (such as a refrigerant). After being compressed by the compressor 1, the heat exchange medium is discharged into the condenser 3 in a high-temperature and high-pressure gaseous state, and exchanges heat with the air entering the heat exchange channel 300. After the air is heated by the condenser 3, the heat exchange medium is simultaneously cooled by the air and condensed into a high-pressure liquid. Then, the heat exchange medium coming out of the condenser 3 can enter the evaporator 2 and exchange heat with the air in the heat exchange channel 300 again. Specifically, the evaporator 2 absorbs the heat in the air to condense the moisture in the air to realize dehumidification. Then, at least part of the heat exchange medium in the evaporator 2 absorbs heat and flows out from the heat exchange medium outlet of the evaporator 2, and can be heated by the heat exchange structure 400 again, and then sent back into the compressor 1 for pressurization, and this cycle is repeated to realize heat exchange.

[0041] The process of drying the clothes in the clothes treatment drum 200 through the heat pump heat exchange system 100 is as follows: The low-temperature and wet air in the clothes treatment drum 200 enters the heat exchange channel 300 under the action of the fan. For example, it can first pass through the evaporator 2 and exchange heat with the evaporator 2, so that the evaporator 2 absorbs heat from the air to achieve air dehumidification. The dehumidified dry and low-temperature air then exchanges heat through the condenser 3 to heat the air. After forming high-temperature and dry hot air, it enters the clothes treatment drum 200, thereby realizing heating or drying of the clothes in the clothes treatment drum 200.

[0042] For the clothes treatment equipment provided in this embodiment, by arranging a heat exchange structure 400 in the box body, the heat exchange structure 400 is used to heat the heat exchange medium flowing out from the heat exchange medium outlet of the evaporator 2, so that the temperature of the heat exchange medium flowing into the heat exchange medium inlet of the compressor 1 is increased, that is, the intake air temperature of the compressor 1 is increased, thereby reducing the energy consumption of the compressor 1, and further improving the drying efficiency. Moreover, since the heat exchange structure 400 can heat the heat exchange medium flowing out from the evaporator 2, it can increase the superheat degree of the heat exchange medium flowing from the heat exchange medium outlet of the evaporator 2 into the compressor 1 to a certain extent, and can make the heat exchange medium flowing out from the evaporator 2 absorb heat and turn into a gas state as much as possible and then be sent back to the compressor 1. Furthermore, it can avoid the situation that the liquid heat exchange medium in the heat exchange medium sent back to the compressor 1 causes damage to structures such as the cylinder in the compressor 1 to a certain extent, protects the compressor 1, and further ensures the drying efficiency.

[0043] In some embodiments, referring to Figures 1 to 3 As shown, the heat exchange structure 400 includes an energy storage member 401 and a heating channel 4021. The energy storage member 401 is in heat exchange contact with the heating channel 4021, and the heating channel 4021 is respectively communicated with the heat exchange medium outlet of the evaporator 2 and the heat exchange medium inlet of the compressor 1.

[0044] Among them, the energy storage member 401 is in heat exchange contact with the heating channel 4021, that is to say, the energy storage member 401 and the heating channel 4021 can carry out heat exchange and transfer.

[0045] In specific implementation, the compressor 1, the drive motor, the fan, etc. are all located in the box body and outside the heat exchange channel 300 and the clothes treatment drum 200. The temperatures of the compressor 1, the drive motor, and the fan itself will gradually increase with the extension of the drying time, and the increase in the temperatures of these components is likely to cause overheating damage to these components, thereby affecting the drying efficiency.

[0046] Among them, in this embodiment, by setting the energy storage component 401, for example, the energy storage component 401 and the compressor 1, the drive motor, the blower, etc. can be arranged in the same space in the box body. The energy storage component 401 can absorb and store the heat released into this space during the operation of components such as the compressor 1, the drive motor, and the blower, realizing effective cooling of the space where the above components in the box body are located, avoiding excessive temperature rise of these components, and thus ensuring the drying efficiency.

[0047] Moreover, since the energy storage component 401 is in heat exchange contact with the heating channel 4021, while the energy storage component 401 dissipates heat to the above space, the heat absorbed by the energy storage component 401 can also be transferred to the heat exchange medium flowing through the heating channel 4021, so that the temperature of the heat exchange medium flowing into the compressor 1 through the heating channel 4021 is increased. That is, the intake air temperature of the compressor 1 is increased, thereby reducing the energy consumption of the compressor 1, and further improving the drying efficiency. Moreover, the superheat degree of the heat exchange medium flowing from the heat exchange medium outlet of the evaporator 2 into the compressor 1 is increased, effectively protecting the compressor 1. That is to say, such a setting in this embodiment realizes heat dissipation of the above space to avoid excessive temperature rise of structures such as the compressor 1, and reasonably utilizes the heat generated by the upper components recovered by the energy storage component 401 during the initial operation of the heat pump heat exchange system 100, increases the intake air temperature of the compressor 1 to achieve the dual effects of waste heat recovery and improvement of drying efficiency without increasing power consumption, and increases the superheat degree of the heat exchange medium flowing from the heat exchange medium outlet of the evaporator 2 into the compressor 1.

[0048] Of course, in some other embodiments, the energy storage component 401 can also be a heating component to achieve the effect of heating the heat exchange medium flowing out of the evaporator 2 by its own heat generation.

[0049] In some embodiments, referring to Figures 1 to 3 as shown, the heat exchange structure 400 has a first heat exchange tube 402. The inner cavity of the first heat exchange tube 402 forms a heating channel 4021, and the energy storage component 401 is a phase change material layer arranged on the outer wall of the first heat exchange tube 402.

[0050] Among them, the phase change material (Phase Change Material, abbreviated as PCM) is a substance that changes its physical state while keeping its own temperature unchanged and can provide latent heat. The process of changing the physical state of the substance is called the phase change process. At this time, the phase change material will absorb or release a large amount of latent heat, and the temperature of the material itself hardly changes during the phase change process, but the latent heat absorbed or released is much larger than the sensible heat.

[0051] Therefore, by making the energy storage component 401 a phase change material layer, the heat dissipated by components such as the compressor 1 can be absorbed by the phase change material. Since the phase change material can store and absorb more heat during the phase change process, compared with non-phase change materials of the same volume, on the one hand, the volume of the energy storage component 401 can be saved, which is beneficial to the development of the entire laundry treatment device towards miniaturization. On the other hand, the heat recovery efficiency of the energy storage component 401 for waste heat can be improved, further avoiding heat waste and further preventing components such as the compressor 1 from overheating, ensuring the drying efficiency.

[0052] In addition, during the phase change process, the temperature of the phase change material itself remains almost unchanged, which can, to a certain extent, prevent the temperature of the phase change material from affecting the temperature of the space where it is located, resulting in the situation where the heat generated by structures such as the compressor 1 cannot be effectively absorbed, further ensuring the drying efficiency.

[0053] Exemplarily, the composition of the phase change material can be adjusted according to actual needs to adjust the phase change temperature point of the phase change material. Among them, the phase change material layer can be, for example, a paraffin layer, a hydrated salt layer, etc. For example, a gel can be added to the phase change material to form a gel-like substance, thereby ensuring the stable progress of the phase change process of the phase change material.

[0054] Exemplarily, the first heat exchange tube 402 can be, for example, an aluminum tube or a copper tube with good thermal conductivity.

[0055] In some embodiments, as shown in Figures 1 to 3 a first flow path 4 and a second flow path 5 are connected between the heat exchange medium outlet of the evaporator 2 and the heat exchange medium inlet of the compressor 1, and the first flow path 4 and the second flow path 5 are connected in parallel. The heating channel 4021 is provided on the second flow path 5 and is in communication with the second flow path 5.

[0056] That is to say, the heat exchange medium at the heat exchange medium outlet of the evaporator 2 can flow back to the compressor 1 through the first flow path 4, or can flow back to the compressor 1 after the heat exchange medium is heated by the heating channel 4021 through the second flow path 5.

[0057] In some embodiments, as shown in Figures 1 to 3 a first control and adjustment component 6 is further provided between the heat exchange medium outlet of the evaporator 2 and the heat exchange medium inlet of the compressor 1. The first control and adjustment component 6 is used to adjust the opening and closing states of the first flow path 4 and the second flow path 5. Among them, the opening and closing states here include conduction and cutoff, and conduction can include full conduction or partial conduction.

[0058] Exemplarily, for example, when it is necessary to heat the heat exchange medium flowing out of the evaporator 2, the first control and adjustment member 6 can be controlled to shut off the first flow path 4 and conduct the second flow path 5, so that the heat exchange medium coming out of the evaporator 2 is heated by the heating channel 4021 and then flows back into the compressor 1, improving the superheat degree of the heat exchange medium flowing from the heat exchange medium outlet of the evaporator 2 into the compressor 1 and the intake air temperature of the compressor 1, and ensuring the stability and drying efficiency of the heat pump heat exchange system 100.

[0059] For another example, when the superheat degree of the heat exchange medium flowing from the heat exchange medium outlet of the evaporator 2 into the compressor 1 is sufficient, that is, when the temperature of the heat exchange medium at the heat exchange medium outlet of the evaporator 2 is normal and does not need to be heated, the first control and adjustment member 6 can be controlled to shut off the second flow path 5 and conduct the first flow path 4, so that the heat exchange medium coming out of the evaporator 2 directly flows back into the compressor 1 through the first flow path 4, thereby to a certain extent avoiding the situation where when the temperature of the heat exchange medium coming out of the evaporator 2 is normal and higher than the temperature of the space where the heat exchange structure 400 is located, the heat of the heat exchange medium is reversely transferred to the heat exchange structure 400, resulting in a decrease in the superheat degree and the intake air temperature of the compressor 1, and further ensuring the drying efficiency.

[0060] Exemplarily, the first control and adjustment member 6 can be, for example, a solenoid valve or a ball valve, etc.

[0061] In some embodiments, as shown in Figures 1 to 3 a first temperature detection member 7 is provided in the box body. The first temperature detection member 7 is used to detect the temperature at the heat exchange medium outlet of the evaporator 2, so as to conduct the second flow path 5 and shut off the first flow path 4 when the detected temperature is less than the first preset temperature threshold, and shut off the second flow path 5 and conduct the first flow path 4 when the detected temperature is greater than or equal to the first preset temperature threshold.

[0062] With such a setting, the temperature of the heat exchange medium flowing out of the evaporator 2 can be detected in a timely manner according to the first temperature detection member 7, and when the detected temperature value is less than the first preset temperature threshold, that is, when the temperature of the heat exchange medium flowing out of the evaporator 2 is too low, the second flow path 5 can be controlled to conduct and the first flow path 4 can be shut off, so that as much of the heat exchange medium coming out of the evaporator 2 as possible enters the compressor 1 through the second flow path 5, so as to effectively heat the heat exchange medium flowing out of the evaporator 2 through the heating channel 4021, improving the timeliness of control and further improving the drying efficiency and the superheat degree of the heat exchange medium flowing from the heat exchange medium outlet of the evaporator 2 into the compressor 1.

[0063] Among them, the laundry treatment device further includes a first controller, which can electrically connect the first temperature detector 7 and the first control and adjustment member 6 to the first controller respectively. The first controller can control the opening and closing states of the first flow path 4 and the second flow path 5 by the first control and adjustment member 6 according to the relationship between the detected temperature value and the first preset temperature threshold. The above-mentioned first controller can be, for example, a separately provided controller, or the controller of the heat pump heat exchange system 100, or the overall controller of the laundry treatment device.

[0064] Exemplarily, the first temperature detector 7 can be, for example, a temperature sensor, a thermometer, etc.

[0065] During specific implementation, referring to Figures 1 to 4 As shown, a temperature sensor 13 can also be provided in the space where components such as the compressor 1, the drive motor, and the blower are located. For example, the temperature sensor 13 is provided on the heat exchange structure 400. The temperature sensor 13 is used to detect the temperature in this space, and the temperature sensor 13 is electrically connected to the above-mentioned first controller. Exemplarily, the first preset temperature threshold can be, for example, 25 °C. When the temperature detected by the temperature sensor 13 is greater than 25 °C and the temperature detected by the first temperature detector 7 is less than 25 °C, the first flow path 4 is controlled to be shut off, and the second flow path 5 is controlled to be conducted, so that the heat generated by structures such as the compressor 1 absorbed by the energy storage member 401 can be transferred to the heat exchange medium in the heating channel 4021 to heat the heat exchange medium flowing out of the evaporator 2. Conversely, the first flow path 4 can be conducted and the second flow path 5 can be shut off.

[0066] Exemplarily, when the energy storage member 401 includes the above-mentioned phase change material layer, assuming that the phase change material is in a solid state in the initial state, the phase change temperature point of the phase change material can be between 25 °C and 35 °C, for example, it can be 30 °C. At this time, the phase change material first uses sensible heat to heat the heat exchange medium flowing out of the evaporator 2, and then when the temperature in the space rises to 30 °C, the phase change material changes from a solid state to a liquid state and begins to use latent heat to heat the heat exchange medium.

[0067] In some embodiments, referring to Figure 1 、 Figure 2 and Figure 4 As shown, the heat exchange structure 400 includes a cooling channel 4031. The cooling channel 4031 is respectively communicated with the heat exchange medium outlet of the condenser 3 and the heat exchange medium inlet of the evaporator 2 to reduce the temperature of the heat exchange medium flowing out of the heat exchange medium outlet of the condenser 3.

[0068] With such a setting, the heat exchange medium flowing out of the condenser 3 is cooled through the cooling channel 4031, thereby increasing to a certain extent the subcooling degree of the heat exchange medium flowing from the heat exchange medium outlet of the condenser 3 into the evaporator 2, which is beneficial to increasing the heating capacity of the entire heat pump heat exchange system 100 and further improving the drying efficiency.

[0069] Among them, when the heat exchange structure 400 includes the above-mentioned energy storage member 401, the energy storage member 401 can be in heat exchange contact with the cooling channel 4031, that is, heat exchange and transfer can occur between the energy storage member 401 and the cooling channel 4031. At this time, in the middle and late stages of the operation of the heat pump heat exchange system 100, the cold degree of the energy storage member 401 compared with the heat exchange medium flowing out of the condenser 3 can be used to cool this part of the heat exchange medium, so as to increase the subcooling degree of the heat exchange medium flowing from the heat exchange medium outlet of the condenser 3 into the evaporator 2.

[0070] In some embodiments, referring to Figure 1 、 Figure 2 and Figure 4 as shown, the heat exchange structure 400 has a second heat exchange tube 403, and the inner cavity of the second heat exchange tube 403 is formed as a cooling channel 4031, and a phase change material layer is provided on the outer wall of the second heat exchange tube 403.

[0071] With such a setting, the heat of the heat exchange medium flowing through the cooling channel 4031 can be absorbed by the phase change material layer, so as to achieve the purpose of cooling the heat exchange medium flowing out of the condenser 3. That is to say, while ensuring the subcooling degree of the heat exchange medium flowing from the heat exchange medium outlet of the condenser 3 into the evaporator 2 to increase the heating capacity of the heat pump heat exchange system 100, the heat of the heat exchange medium flowing out of the condenser 3 can also be recovered to a certain extent. For example, the recovered heat can be used to heat the heat exchange medium flowing out of the evaporator 2, further increasing the intake air temperature of the compressor 1 and the superheat degree of the heat exchange medium flowing from the heat exchange medium outlet of the evaporator 2 into the compressor 1, and the drying efficiency is high.

[0072] When specifically implemented, for example, the phase change point temperature of the phase change material can be less than or equal to the temperature of the heat exchange medium flowing out of the condenser 3. At this time, when the heat exchange medium flowing out of the condenser 3 flows through the cooling channel 4031, the phase change material is in the phase change process. In this way, when the phase change material absorbs the heat of the heat exchange medium flowing out of the condenser 3, it will not cause the temperature of the space where the heat exchange structure 400 is located to rise, further avoiding the situation that components such as the compressor 1 and the drive motor have too high a temperature rise and overheat, and further ensuring the drying efficiency.

[0073] Among them, the phase change material layer on the outer wall of the second heat exchange tube 403 can be the same phase change material as the phase change material layer on the outer wall of the first heat exchange tube 402.

[0074] Exemplarily, the second heat exchange tube 403 may be, for example, an aluminum tube or a copper tube with good heat conduction performance, etc.

[0075] In some embodiments, referring to Figure 1 、 Figure 2 and Figure 4 As shown, a third flow path 8 and a fourth flow path 9 are connected between the heat exchange medium outlet of the condenser 3 and the heat exchange medium inlet of the evaporator 2, and the third flow path 8 and the fourth flow path 9 are connected in parallel. The cooling channel 4031 is arranged on the fourth flow path 9 and is communicated with the fourth flow path 9.

[0076] That is to say, the heat exchange medium at the heat exchange medium outlet of the condenser 3 can flow into the evaporator 2 through the third flow path 8, or can flow into the evaporator 2 after the heat exchange medium is cooled by the cooling channel 4031 through the fourth flow path 9.

[0077] In some embodiments, referring to Figure 1 、 Figure 2 and Figure 4 As shown, a second control and adjustment member 10 is further arranged between the heat exchange medium outlet of the condenser 3 and the heat exchange medium inlet of the evaporator 2. The second control and adjustment member 10 is used to adjust the opening and closing states of the third flow path 8 and the fourth flow path 9. Wherein, the opening and closing states here include conduction and cutoff, and conduction may include full conduction or partial conduction.

[0078] Exemplarily, for example, when it is necessary to cool the heat exchange medium flowing out of the condenser 3, the second control and adjustment member 10 can be controlled to cutoff the third flow path 8 and control the fourth flow path 9 to conduct, so that the heat exchange medium coming out of the condenser 3 is cooled by the cooling channel 4031 and then flows into the evaporator 2, increasing the subcooling degree of the heat exchange medium flowing from the heat exchange medium outlet of the condenser 3 to the evaporator 2, and improving the heating capacity and drying efficiency of the heat pump heat exchange system 100.

[0079] For another example, when the subcooling degree of the heat exchange medium flowing from the heat exchange medium outlet of the condenser 3 to the evaporator 2 is sufficient and there is no need to cool the heat exchange medium, the second control and adjustment member 10 can be controlled to cutoff the fourth flow path 9 and control the third flow path 8 to conduct, so that the heat exchange medium coming out of the condenser 3 can directly flow into the evaporator 2 through the third flow path 8, thereby to a certain extent avoiding the situation that when the temperature of the heat exchange medium coming out of the condenser 3 is normal (that is, the subcooling degree of the heat exchange medium flowing from the heat exchange medium outlet of the condenser 3 to the evaporator 2 is sufficient) and lower than the temperature of the space where the heat exchange structure 400 is located, the heat exchange medium absorbs heat in the reverse direction and causes the reduction of the subcooling amount, and further ensuring the heating capacity and drying efficiency.

[0080] Exemplarily, the second control and adjustment member 10 may be, for example, a solenoid valve or a ball valve, etc.

[0081] In some embodiments, referring to Figures 1 to 4 as shown, the heat pump heat exchange system 100 further includes a second temperature detector 11. The second temperature detector 11 is used to detect the temperature at the heat exchange medium outlet of the condenser 3, so that when the detected temperature is greater than the second preset temperature threshold, the fourth flow path 9 is turned on and the third flow path 8 is turned off, and when the detected temperature is less than or equal to the second preset temperature threshold, the fourth flow path 9 is turned off and the third flow path 8 is turned on.

[0082] With such a setting, the temperature of the heat exchange medium flowing out of the condenser 3 can be detected in a timely manner according to the second temperature detector 11. When the detected temperature value is greater than the second preset temperature threshold, that is, when the temperature of the heat exchange medium flowing out of the condenser 3 is too high, the fourth flow path 9 can be controlled to be turned on and the third flow path 8 can be turned off, so that as much of the heat exchange medium coming out of the condenser 3 as possible enters the evaporator 2 through the fourth flow path 9, and the heat exchange medium flowing out of the evaporator 2 can be effectively cooled through the cooling channel 4031, improving the timeliness of control and further improving the heating capacity and drying efficiency.

[0083] Among them, the laundry treatment device may further include a second controller, and the second temperature detector 11 and the second control and adjustment member 10 are respectively electrically connected to the second controller. The second controller can control the second control and adjustment member 10 to adjust the opening and closing states of the third flow path 8 and the fourth flow path 9 according to the relationship between the detected temperature value and the second preset temperature threshold. The above-mentioned second controller may be, for example, a separately provided controller, or the controller of the heat pump heat exchange system 100, or the total controller of the laundry treatment device.

[0084] Exemplarily, the second temperature detector 11 may be, for example, a temperature sensor, a thermometer, etc.

[0085] In specific implementation, the above-mentioned temperature sensor 13 on the heat exchange structure 400 can be simultaneously electrically connected to the second controller. Exemplarily, the second preset temperature threshold may be, for example, 44 °C. For example, when the temperature detected by the temperature sensor 13 is less than 44 °C and the temperature detected by the second temperature detector 11 is greater than 44 °C, the third flow path 8 is controlled to be turned off and the fourth flow path 9 is controlled to be turned on, so that the heat exchange medium flowing out of the condenser 3 can be cooled through the cooling channel 4031, and the heat of the heat exchange medium flowing out of the condenser 3 can be recovered, which is convenient for increasing the subcooling degree of the heat exchange medium flowing from the heat exchange medium outlet of the condenser 3 to the evaporator 2 and the heating capacity of the entire heat pump heat exchange system 100, and improving the drying efficiency. On the contrary, the third flow path 8 can be turned on and the fourth flow path 9 can be turned off.

[0086] In some embodiments, referring to Figures 1 to 4 as shown, a throttling member 12 is further provided between the heat exchange medium outlet of the condenser 3 and the heat exchange medium inlet of the evaporator 2.

[0087] By setting the throttling member 12, the heat transfer medium at the outlet of the heat transfer medium of the condenser 3 can be throttled and depressurized, so that the heat transfer medium at the outlet of the heat transfer medium of the condenser 3 becomes a low-temperature and low-pressure gas-liquid two-phase mixture and then enters the evaporator 2. That is to say, while the throttling member 12 throttles and depressurizes the heat transfer medium at the outlet of the heat transfer medium of the condenser 3, it can further reduce the temperature of the heat transfer medium entering the evaporator 2, which is beneficial to further increasing the subcooling degree of the heat transfer medium flowing from the outlet of the heat transfer medium of the condenser 3 into the evaporator 2.

[0088] In specific implementation, the third flow path 8 and the fourth flow path 9 are connected to the heat transfer medium inlet of the evaporator 2 through the common flow section 14. In this way, there is no need to additionally provide two heat transfer medium inlets corresponding to the third flow path 8 and the fourth flow path 9 on the evaporator 2, that is, there is no need to change the original structure of the evaporator 2. Moreover, in this way during assembly, the third flow path 8 and the fourth flow path 9 can be integrally connected through the common flow section 14 first, and then the common flow section 14 and the evaporator 2 can be connected. The connection and assembly are simple and efficient. Specifically, the throttling member 12 can be arranged on the common flow section 14.

[0089] Exemplarily, the throttling member 12 can be, for example, a capillary tube, an electronic expansion valve, etc.

[0090] It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0091] The above description is only the specific implementation manners of the embodiments of the present invention, enabling those skilled in the art to understand or implement the embodiments of the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the embodiments of the present invention. Therefore, the embodiments of the present invention will not be limited to the embodiments described herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A laundry treatment device, characterized in that, It includes a box body, a laundry processing cylinder arranged in the box body, and a heat pump heat exchange system; There is a heat exchange channel between the box body and the laundry processing cylinder, and the heat exchange channel is communicated with the inner cavity of the laundry processing cylinder; the heat pump heat exchange system includes a compressor, an evaporator and a condenser; at least part of the heat pump heat exchange system is located in the heat exchange channel; A heat exchange structure is also arranged in the box body, and the heat exchange structure is used to heat the heat exchange medium flowing out from the heat exchange medium outlet of the evaporator.

2. The laundry treatment device according to claim 1, characterized in that The heat exchange structure includes an energy storage member and a heating channel; The energy storage member is in heat exchange contact with the heating channel, and the heating channel is respectively communicated with the heat exchange medium outlet of the evaporator and the heat exchange medium inlet of the compressor.

3. The laundry treatment device according to claim 2, characterized in that, The heat exchange structure has a first heat exchange tube, the inner cavity of the first heat exchange tube forms the heating channel, and the energy storage member is a phase change material layer arranged on the outer wall of the first heat exchange tube.

4. The laundry treating apparatus according to claim 2, wherein A first flow path and a second flow path are connected between the heat exchange medium outlet of the evaporator and the heat exchange medium inlet of the compressor, and the first flow path and the second flow path are connected in parallel; The heating channel is arranged on the second flow path and is communicated with the second flow path.

5. The laundry treating apparatus according to claim 4, wherein A first control and adjustment member is also arranged between the heat exchange medium outlet of the evaporator and the heat exchange medium inlet of the compressor, and the first control and adjustment member is used to adjust the opening and closing states of the first flow path and the second flow path.

6. The laundry treatment device according to claim 5, characterized in that, A first temperature detection member is arranged in the box body; The first temperature detection member is used to detect the temperature at the heat exchange medium outlet of the evaporator, so that when the detected temperature is less than the first preset temperature threshold, the second flow path is conducted and the first flow path is shut off, and when the detected temperature is greater than or equal to the first preset temperature threshold, the second flow path is shut off and the first flow path is conducted.

7. The heat pump heat exchange system of the laundry treatment device according to any one of claims 1 to 6, characterized in that The heat exchange structure includes a cooling channel, and the cooling channel is respectively communicated with the heat exchange medium outlet of the condenser and the heat exchange medium inlet of the evaporator to reduce the temperature of the heat exchange medium flowing out from the heat exchange medium outlet of the condenser.

8. The laundry treatment device according to claim 7, characterized in that, The heat exchange structure has a second heat exchange tube, the inner cavity of the second heat exchange tube forms the cooling channel, and a phase change material layer is arranged on the outer wall of the second heat exchange tube.

9. The laundry treating apparatus according to claim 8, wherein A third flow path and a fourth flow path are connected between the heat exchange medium outlet of the condenser and the heat exchange medium inlet of the evaporator, and the third flow path and the fourth flow path are connected in parallel; The cooling channel is arranged on the fourth flow path and is communicated with the fourth flow path.

10. The laundry treating apparatus according to claim 9, wherein, A second control and adjustment member is also arranged between the heat exchange medium outlet of the condenser and the heat exchange medium inlet of the evaporator, and the second control and adjustment member is used to adjust the opening and closing states of the third flow path and the fourth flow path.

11. The laundry treatment device according to claim 10, characterized in that, The heat pump heat exchange system also includes a second temperature detection member; The second temperature detection component is used to detect the temperature at the heat exchange medium outlet of the condenser, so that when the detected temperature is greater than a second preset temperature threshold, the fourth flow path is opened and the third flow path is closed, and when the detected temperature is less than or equal to the second preset temperature threshold, the fourth flow path is closed and the third flow path is opened.

12. The heat pump heat exchange system of the laundry treatment device according to claim 7, characterized in that, A throttling element is also provided between the heat exchange medium outlet of the condenser and the heat exchange medium inlet of the evaporator.

Images