Dehumidification heat pump system and heat pump clothes drying device

Abstract

The application relates to the technical field of clothes processing, and more particularly to a dehumidification heat pump system and a heat pump clothes drying device, wherein the heat pump system comprises a drum, a main air duct which is communicated with the drum and forms an air flow circulation channel, a heat pump module which comprises an evaporator and a condenser arranged in the main air duct, and a rotary dehumidification module which comprises a rotary wheel and comprises a moisture absorbing area and a moisture releasing area; a moisture releasing air duct is arranged and used for introducing high-temperature air flow into the moisture releasing area to release the moisture of the rotary wheel; an air inlet is arranged on the main air duct and is communicated with the outside, fresh air from the outside enters the main air duct through the air inlet, and the fresh air is mixed with air flow discharged from the drum and then flows to the evaporator. According to the application, the fresh air from the outside can enter the main air duct through the air inlet, the temperature of the air flow entering the evaporator can be reduced after the fresh air is combined with the high-temperature and high-humidity air flow, and therefore the load of the evaporator can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of clothing processing technology, and more specifically, to a dehumidifying heat pump system and a heat pump drying device. Background Technology

[0002] Clothes dryers have become an indispensable necessity in people's daily lives, and efficient and energy-saving clothing drying technology has gradually become a research hotspot. Traditional clothing drying methods mainly rely on electric heating elements to heat the air for drying, which has disadvantages such as high energy consumption, low efficiency, and easy damage to clothes.

[0003] A heat pump dryer is an appliance that uses heat pump technology (reverse Carnot cycle) to dry clothes. It efficiently transfers heat from the air through a closed heat circulation system, and has the characteristics of energy saving, clothing care and environmental protection.

[0004] In recent years, heat pump dryers have received widespread attention due to their high efficiency and energy saving. They recover heat through a heat pump system and use the principle of condensation dehumidification to dry clothes, significantly improving energy efficiency compared to traditional electric dryers. For example, Chinese utility model patent CN209194205U proposes a heat pump dryer with indoor dehumidification function. A fan, evaporator, and condenser are installed sequentially in the air duct of the dryer body; and a first temperature sensor, a first humidity sensor, a second temperature sensor, and a second humidity sensor are installed in the air duct, thereby achieving dehumidification of the room while drying clothes.

[0005] However, existing heat pump dryers have limited dehumidification capabilities in high humidity environments, resulting in longer drying times and impacting user experience.

[0006] Rotary dehumidification technology, as a highly efficient dehumidification method, separates humidity through contact between the moisture-absorbing material and the air, offering advantages such as high dehumidification efficiency and strong adaptability. Rotary dehumidification utilizes an adsorbent-coated rotor that, through rotation, adsorbs humid air and releases dry air. It achieves dehumidification by leveraging the different water adsorption saturation levels of the adsorbent at different temperatures. When encountering low-temperature gases, the adsorbent has a strong water absorption capacity, adsorbing moisture from the low-temperature gas and reducing its humidity; when encountering high-temperature gases, its water absorption capacity is weak, dehydrating the air and releasing it to the high-temperature air—this process is called adsorbent regeneration.

[0007] The rotor is divided into a treatment zone and a dehumidification zone. Rotation causes the adsorbent to circulate sequentially through these zones, absorbing moisture from the gas to be treated. It then rotates to the regeneration side, releasing moisture to the high-temperature regeneration gas. It should be noted that during dehumidification, the treated gas and the regeneration gas undergo approximately isenthalpic changes. The treated gas increases in temperature and decreases in humidity, while the regeneration gas decreases in temperature and increases in humidity, with the enthalpy values ​​remaining almost unchanged.

[0008] Chinese invention patent application CN117127372A discloses a clothes dryer that combines heat pump and rotary dehumidification. Its drying air circulation circuit includes, in sequence, a drum 1, an evaporator 3, a heat exchanger 4, a dehumidification rotor 5 generating zone, a medium-pressure condenser 7, and the drum 1 again. High-temperature dry air is blown into the drum 1 by a fan a8, where it exchanges heat and moisture with the clothes 2, becoming high-temperature humid air. This air is then cooled and dehumidified by the evaporator 3, heated by regenerated air in the heat exchanger 4, heated and dehumidified again by the dehumidification rotor 5 generating zone, and heated again by the medium-pressure condenser 7 to become high-temperature dry air, which is then blown back into the drum 1 by the fan a8. This clothes dryer achieves dehumidification of clothes by combining rotary dehumidification technology and a heat pump. However, this solution has some shortcomings. For example, the high-temperature humid air discharged from the drum 1 directly acts on the evaporator 3, and then the evaporator continuously cools and dehumidifies, which increases the load on the evaporator. Utility Model Content

[0009] The main purpose of this utility model is to propose a dehumidification heat pump system, control method and heat pump clothes drying equipment. By combining rotary dehumidification and heat pump, and adding a bypass ventilation duct at the evaporator, some of the waste heat from the return air of the drum can be recovered, which is beneficial for the rapid heating of clothes in the early stage of drying and saves energy consumption.

[0010] To address the aforementioned technical problems, a dehumidification heat pump system is proposed, comprising: A drum, used to hold items to be dehumidified; The main air duct is connected to the drum and forms an airflow circulation channel; The heat pump module includes an evaporator and a condenser installed in the main air duct, with the evaporator and condenser arranged sequentially along the airflow direction; The rotary dehumidifier module includes a rotary wheel, the portion of which is located between the evaporator and condenser in the main air duct forms a moisture absorption zone; the portion of which is located in the dehumidification air duct forms a dehumidification zone. The dehumidification air duct is used to introduce high-temperature airflow into the dehumidification zone to dehumidify the impeller; The main air duct is equipped with an air inlet that connects to the outside. Fresh air from the outside enters the main air duct through the air inlet and mixes with the airflow discharged from the drum before flowing to the evaporator.

[0011] Furthermore, the above technical solution also includes: A bypass ventilation duct is installed, bypassing the evaporator. And valves, used to open and close the bypass ventilation duct; After the valve is opened, the airflow discharged from the drum mixes with the fresh air from the outside and is divided into two paths: one path flows to the evaporator, and the other path flows through the bypass ventilation duct to the moisture absorption area of ​​the rotary dehumidification module.

[0012] In any of the above technical solutions, a diversion port is further provided on the main air duct, and the diversion port is connected to the dehumidification air duct. The airflow, heated by the condenser, is divided into two paths: one flows to the drum, and the other flows through the diversion port to the dehumidification duct and acts on the dehumidification zone of the rotary dehumidification module.

[0013] In any of the above technical solutions, further comprising: An auxiliary heat source is installed inside the dehumidification duct to heat the airflow entering the dehumidification duct, so that the heated airflow acts on the dehumidification zone of the rotary dehumidification module.

[0014] In any of the above technical solutions, the auxiliary heat source is further described as electric heating.

[0015] In any of the above technical solutions, further comprising: An auxiliary cold source is installed inside the dehumidification duct to cool the high-temperature, low-humidity airflow after dehumidification in the dehumidification zone of the rotary dehumidification module.

[0016] In any of the above technical solutions, the auxiliary cold source is further described as water cooling or semiconductor cooling.

[0017] In any of the above technical solutions, a further step is to install an air-guiding module inside the main air duct to circulate the airflow within the main air duct and the drum.

[0018] On the other hand, a heat pump clothes drying device is also proposed, which uses any of the above-mentioned dehumidifying heat pump systems to dry clothes.

[0019] Beneficial effects: Compared with existing technologies, By setting up air inlets, fresh air from the outside can enter the main air duct. Since the temperature of the fresh air is room temperature, which is much lower than the high temperature and high humidity airflow discharged from the drum, the temperature of the mixed airflow will be significantly reduced after the fresh air and the high temperature and high humidity airflow are combined. This will effectively reduce the load on the evaporator and thus reduce energy consumption.

[0020] By incorporating a bypass ventilation duct, part of the airflow exiting the drum is cooled by the evaporator, while the other part exits through the bypass duct. The two airflows then mix and work together in the moisture absorption zone for adsorption and dehumidification. This effectively reduces the load on the evaporator and, to some extent, also reduces the load on the condenser, facilitating rapid heating of the airflow entering the drum initially and saving energy. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the connection structure of this utility model; Figure 2 This is a schematic diagram of the installation structure of the rotary dehumidification module of this utility model; Figure 3 This is an exploded structural diagram of the rotary dehumidifier module, evaporator, and condenser of this utility model; Figure 4 This is a schematic diagram of airflow within the main air duct and dehumidification air duct of the utility model. Figure 5 This is a flow chart of the rotary dehumidification process of the control method of this utility model; Figure 6 This is a flowchart of the bypass ventilation duct opening and closing process of the control method of this utility model.

[0023] The annotations in the attached figures are explained as follows: 1. Drum; 11. Air inlet; 12. Air outlet; 2. Main air duct; 21. Exhaust air outlet; 22. Diversion port; 3. Heat pump module; 31. Evaporator; 32. Condenser; 4. Rotary dehumidification module; 41. Rotary wheel; 401. Moisture absorption zone; 402. Dehumidification zone; 5. Dehumidification air duct; 51. Second air inlet port; 52. Second air outlet port; 6. Bypass ventilation duct; 61. Valve; 7. Auxiliary heat source; 8. Auxiliary cold source; 9. Circulating fan. Detailed Implementation

[0024] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely a part of the embodiments of this application, and not all of the embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0025] It should be noted that, as shown in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list; the method or apparatus may also include other steps or elements.

[0026] If the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] The following embodiments will be used to provide a detailed description of the dehumidifying heat pump system, control method, and heat pump clothes drying equipment of this application.

[0030] Example 1: like Figures 1-3As shown, this embodiment proposes a dehumidification heat pump system, including: a drum 1 for accommodating items to be dehumidified, having an air inlet 11 and an air outlet 12; a main air duct 2 having a first air inlet port and a first air outlet port, the first air inlet port being connected to the air outlet 12 and the first air outlet port being connected to the air inlet 11, thus forming an airflow circulation channel between the main air duct 2 and the drum 1; a heat pump module 3 including an evaporator 31 and a condenser 32 disposed within the main air duct 2, the evaporator 31 and the condenser 32 being arranged sequentially along the airflow direction; and a rotary dehumidification module 4 including a moisture absorption zone 401 and a moisture desiccation zone 402, the moisture absorption zone 401 being located between the evaporator 31 and the condenser 32 within the main air duct 2; and the moisture desiccation zone 402 being located within a moisture desiccation air duct 5. The dehumidification air duct 5 has a second air inlet port 51 and a second air outlet port 52, which are used to introduce high-temperature airflow into the dehumidification zone 402 to dehumidify it. The dehumidified airflow is discharged from the second air outlet port 52.

[0031] After placing the items to be dehumidified on roller 1, start the entire heat pump system. Roller 1 and main air duct 2 will form a circulating airflow. For example... Figure 4 (As shown in the diagram, the green arrows indicate the airflow direction in the main air duct, and the red arrows indicate the airflow direction in the dehumidification air duct.) After the high-temperature, low-humidity airflow enters the drum 1, it absorbs moisture from the items inside the drum 1, causing the high-temperature, low-humidity airflow to become a high-temperature, high-humidity airflow. This airflow then exits from the drum 1 and enters the main air duct 2, and then enters the evaporator 31. Under the action of the evaporator 31, the high-temperature, high-humidity airflow is converted into a low-temperature, low-humidity airflow. Next, the low-temperature, low-humidity airflow passes through the moisture absorption zone 401 of the rotary dehumidification module 4 for secondary deep dehumidification, further reducing the humidity of the low-temperature, low-humidity airflow. After passing through the condenser 32, the low-temperature, low-humidity airflow is converted into a high-temperature, low-humidity airflow. Finally, the high-temperature, low-humidity airflow is sent back into the drum 1, and so on, thus quickly dehumidifying the items to be dehumidified inside the drum 1.

[0032] It should be noted that the rotary dehumidification module 4 includes a rotary wheel 41 and a power unit (not shown in the figure) that can drive the rotary wheel 41 to rotate. A part of the rotary wheel 41 is located in the main air duct 2, and another part is located in the dehumidification air duct 5. Thus, the part located in the main air duct 2 forms a moisture absorption zone 401, and the part located in the dehumidification air duct 5 forms a dehumidification zone 402. After the low temperature and high humidity airflow passes through the moisture absorption zone 401 of the rotary wheel 41, a certain amount of moisture will be absorbed on the surface of the moisture absorption zone 401. As the power unit drives the rotary wheel 41 to rotate, the part of the rotary wheel 41 that has absorbed a certain amount of moisture will rotate into the dehumidification air duct 5, and the moisture will be carried away by the high temperature and low humidity airflow in the dehumidification air duct 5, thereby achieving dehumidification, so that the part of the rotary wheel 41 located in the dehumidification air duct 5 can absorb moisture again.

[0033] It should be noted that, in order for the evaporator 31 and condenser 32 to work continuously, the evaporator 31 and condenser 32 are connected to the compressor and throttling device to form a refrigeration cycle system.

[0034] It should be noted that the items can be textiles (clothing, shoes, etc.).

[0035] During the entire operation of the heat pump system, the high-temperature and high-humidity airflow discharged from the drum 1 is continuously cooled by the evaporator 31, resulting in a large load on the system. To address this, an air inlet 21 connected to the outside is provided on the main air duct 2. Fresh air from the outside enters the main air duct 2 through the air inlet 21 and mixes with the airflow discharged from the drum 1 before flowing to the evaporator 31.

[0036] After setting the air inlet 21, fresh air from the outside can enter the main air duct 2 through the air inlet 21. Since the temperature of the fresh air is room temperature, which is much lower than the high temperature and high humidity airflow discharged from the drum 1, the temperature of the mixed airflow will be significantly reduced after the fresh air and the high temperature and high humidity airflow are combined. This will effectively reduce the load on the evaporator 31, thereby reducing energy consumption.

[0037] Example 2: This embodiment is a further improvement based on Embodiment 1.

[0038] like Figure 1 As shown, in this embodiment, it also includes: a bypass ventilation duct 6, which is provided to bypass the evaporator 31; and a valve 61, which is used to open and close the bypass ventilation duct 6; When valve 61 is opened, the airflow discharged from roller 1 mixes with the fresh air from the outside and is divided into two paths. One path flows to evaporator 31, and the other path flows through bypass ventilation duct 6 to the moisture absorption zone 401 of rotary dehumidification module 4.

[0039] During the entire dehumidification process, the temperature of the airflow entering the drum 1 gradually increases and then remains constant (with some fluctuations) after reaching a certain temperature. This means that in the early stages of dehumidification, the temperature of the airflow entering the drum 1 is relatively low. For this low-temperature airflow, the moisture absorption zone 401 of the rotary dehumidification module 4 can absorb moisture without significantly cooling the airflow. Therefore, to solve this problem, a bypass ventilation duct 6 is provided, bypassing the evaporator 31. The airflow exiting the drum 1 is divided into two paths: one flows to the evaporator 31, and the other flows to the bypass ventilation duct 6. The two airflows then converge and flow into the moisture absorption zone 401 of the rotary dehumidification module 4.

[0040] With the bypass ventilation duct 6 installed, part of the airflow discharged from the drum 1 is cooled by the evaporator 31 before being discharged, while the other part is discharged through the bypass ventilation duct 6. Finally, the cooled airflow and the uncooled airflow mix and work together in the moisture absorption zone 401, where moisture is absorbed. This effectively reduces the load on the evaporator 31 and, to some extent, also reduces the load on the condenser 32, which is beneficial for the rapid heating of the airflow entering the drum 1 in the early stages and saves energy.

[0041] In addition, the main purpose of setting the bypass ventilation duct 6 is to facilitate the rapid heating of the airflow by the condenser 32 in the early stage. However, if the bypass ventilation duct 6 is still open in the middle and later stages, it will affect the temperature of the airflow entering the moisture absorption zone 401 to a certain extent (the temperature of the airflow will be too high). Therefore, the valve 61 is set to control the opening and closing of the bypass ventilation duct 6 at the appropriate time.

[0042] Example 3: This embodiment is a further improvement based on any of the above embodiments.

[0043] like Figure 1 As shown, in this embodiment, a diversion port 22 is also provided on the main air duct 2, and the diversion port 22 is connected to the dehumidification air duct 5. The airflow heated by the condenser 32 is divided into two paths: one path flows to the drum 1; the other path flows through the diversion port 22 to the dehumidification air duct 5 and acts on the moisture absorption zone 401 of the rotary dehumidification module 4.

[0044] During the operation of the entire heat pump system, a separate heat source is required for the dehumidification zone 402 of the rotary dehumidification module 4 to dehumidify the zone, which leads to increased energy consumption. Therefore, in this embodiment, a diversion port 22 is provided on the main air duct 2, which is connected to the second air inlet port 51 of the dehumidification air duct 5. The airflow heated by the condenser 32 is divided into two paths: one path flows to the drum 1, and the other path flows through the diversion port 22 to the dehumidification air duct 5 and acts on the dehumidification zone 402 of the rotary dehumidification module 4.

[0045] By setting the diversion port 22, the dehumidification air duct 5 and the main air duct 2 are connected, so that the high temperature and low humidity airflow heated by the condenser 32 can flow to the drum 1 and also to the dehumidification air duct 5, and directly dehumidify the dehumidification zone 402 of the rotor 41, thereby achieving efficient utilization of heat and further reducing the energy consumption of the entire heat pump system.

[0046] In this embodiment, an air-guiding module is also provided in the main air duct 2 to circulate the airflow in the main air duct 2 and the drum 1; wherein, the air-guiding module is a circulating fan 9 located between the condenser 32 and the diversion port 22.

[0047] It should be noted that in order to make the airflow in the entire airflow circulation channel flow quickly, an air-guiding module is provided. Specifically, the air-guiding module is a circulating fan 9 located between the condenser 32 and the diversion port 22. By setting the circulating fan 9 in this position, part of the high-temperature and low-humidity airflow discharged from the condenser 32 is sent into the roller 1, and part of it is sent into the dehumidification air duct 5 through the diversion port 22.

[0048] Example 4: This embodiment is a further improvement based on Embodiment 3.

[0049] like Figure 1 As shown, in this embodiment, it also includes: an auxiliary heat source 7, which is disposed in the dehumidification air duct 5, for heating the airflow entering the dehumidification air duct 5, so that the heated airflow acts on the dehumidification zone 402 of the rotary dehumidification module 4.

[0050] During dehumidification in the heat pump system, the temperature of the airflow heated by the condenser 32 will fluctuate. If the airflow temperature is higher than the dehumidification temperature of the rotor 41, the dehumidification zone 402 of the rotor 41 can be completely dehumidified. If the airflow temperature is lower than the dehumidification temperature of the rotor 41, the dehumidification zone 402 of the rotor 41 will not be completely dehumidified, which will affect the moisture absorption effect of the moisture absorption zone 401 of the rotor 41. To address this, an auxiliary heat source 7 is provided. The auxiliary heat source 7 and the airflow heated by the condenser 32 work together to dehumidify the dehumidification zone 402 of the rotor 41, thereby achieving complete dehumidification of the dehumidification zone 402 of the rotor 41 and realizing efficient utilization of heat, further reducing the energy consumption of the entire heat pump system.

[0051] It should be noted that during the dehumidification process of the heat pump system, the temperature of the airflow heated by the condenser 32 will fluctuate. When the airflow temperature is higher than the dehumidification temperature of the rotor 41, the dehumidification zone 402 can be dehumidified without turning on the auxiliary heat source 7, thus achieving energy saving. When the airflow temperature is lower than the dehumidification temperature of the rotor 41, the auxiliary heat source 7 needs to be turned on, and together with the airflow heated by the condenser 32, it acts on the dehumidification zone 402 of the rotor 41 to achieve dehumidification of the dehumidification zone 402. This control method makes the dehumidification and drying process faster, more energy-efficient, and more effective.

[0052] It should be noted that the auxiliary heat source 7 is an electric heater.

[0053] Example 5: This embodiment is a further improvement based on any of the above embodiments.

[0054] like Figure 1As shown, in this embodiment, it also includes: an auxiliary cold source 8, which is set in the dehumidification air duct 5, and is used to cool the high temperature and low humidity airflow after dehumidification in the dehumidification zone 402 of the rotary dehumidification module 4.

[0055] Since the airflow after dehumidification in the dehumidification zone 402 of the rotor 41 is a high-temperature and high-humidity airflow, and it is discharged from the second air outlet 52 to the outside, condensation easily occurs when the high-temperature and high-humidity airflow comes into contact with the outdoor normal-temperature air, resulting in water droplets. In addition, there is also a certain safety hazard when the high-temperature and high-humidity airflow is discharged outward, which may burn people standing at the second air outlet 52. Therefore, an auxiliary cold source 8 is also provided to cool down the high-temperature and high-humidity airflow in the dehumidification duct 5 before it is discharged outward, thereby improving the user experience.

[0056] It should be noted that the auxiliary cooling source 8 is water-cooled or semiconductor-cooled.

[0057] Example 6: This embodiment proposes a control method for a heat pump system, such as... Figure 5 and Figure 6 As shown, its control method is as follows: S1. Heat pump module starts; preset first temperature. Second temperature , ; S2. Real-time acquisition of current drum inlet air temperature ; S3, if continuous Detected in seconds If the dehumidification module rotates, the auxiliary heat source is activated, and the process proceeds to step S4; otherwise, the detection continues. S4, if continuous Detected in seconds If the signal is positive, the auxiliary heat source is turned off and the system enters S5; otherwise, the detection continues. S5, if continuous Detected in seconds If the condition is met, the auxiliary cooling source will be activated and the system will enter S6; otherwise, the detection will continue. S6, Return to S3 or End; And / or, S11, condenser, and evaporator start; a third temperature is preset. Fourth temperature , ; S12. Real-time acquisition of current drum outlet air temperature ; S13, if continuous Detected in seconds If the condition is met, the valve will open and the process will proceed to S14; otherwise, the detection will continue. S14, if continuous Detected in seconds If the condition is met, the valve is closed and the process proceeds to S15; otherwise, the detection continues. S15, return to S12 or end.

[0058] Regarding the first control method, namely the dehumidification method of the rotary dehumidification module, specifically, a first temperature sensor is installed at the air inlet of the drum. When the heat pump module starts, the first temperature sensor continuously monitors the temperature and records it as follows: When within a certain period of time, such as continuously Detected in seconds If the dehumidifier is activated, the impeller will start, dehumidifying the area, and simultaneously the auxiliary heat source will be activated; in continuous operation... Detected in seconds This indicates that the temperature of the airflow discharged from the condenser is sufficient to dehumidify the rotor, therefore the auxiliary heat source is turned off; subsequently, when continuously... Detected in seconds Then, it indicates that the air temperature discharged from the second air outlet is too high, which may easily burn the user. Therefore, the auxiliary cold source will be turned on to reduce the air temperature discharged from the second air outlet.

[0059] Regarding the second control method, namely the control of the bypass ventilation duct's opening and closing, the main purpose of setting up the bypass ventilation duct is to facilitate the rapid heating of the airflow by the condenser in the early stages. However, if the bypass ventilation duct remains open in the middle and later stages, it will affect the temperature of the airflow entering the desiccant zone to some extent (the airflow temperature will be too high). Therefore, this method is set up to control the valve so as to control the opening and closing of the bypass ventilation duct at appropriate times. A second temperature sensor is installed at the drum air outlet. The second temperature sensor continuously detects the temperature and records it as follows. ,continuous Detected in seconds This indicates that the airflow temperature is too low at this time, and there is no need for the evaporator to significantly reduce the airflow temperature. Therefore, the valve should be opened at this time, and when continuous... Detected in seconds If so, the valve needs to be closed to avoid affecting the dehumidification of the impeller.

[0060] It should be noted that the testing time The seconds can be set to 60 seconds. It can be set to around 60-65℃. It can be set to around 75℃. It can be set to around 30-35℃. It can be set to around 45-50℃. The above parameter settings are for reference only and are not limited to these; other parameters can also be used.

[0061] Example 7: This embodiment proposes a heat pump clothes drying device, which uses the dehumidifying heat pump system in Embodiments 1 to 5 to dry clothes, or uses the control method in Embodiment 6 to dry clothes.

[0062] The dehumidification and drying process for clothes is as follows: After placing the clothes to be dehumidified in the drum, the heat pump system is started. Under the action of the circulating fan, the airflow in the main air duct, the dehumidification air duct, and inside the drum circulates. Specifically, a portion of the high-temperature, low-humidity airflow heated by the condenser flows through the diverter to the dehumidification air duct, and then acts on the dehumidification zone of the rotor. After dehumidifying the rotor, it is discharged from the second air outlet. The other portion is sent into the drum, comes into contact with the damp clothes, and carries away some moisture. The airflow discharged from the drum outlet becomes a high-temperature, high-humidity airflow and gradually flows towards the evaporator. At the same time, due to the air inlet... The negative pressure creates a flow of fresh air from outside through the air inlet into the main air duct, where it mixes with the high-temperature, high-humidity airflow. This reduces the temperature of the high-temperature, high-humidity airflow before it enters the evaporator, thus reducing the load on the evaporator. Under the action of the evaporator, the high-temperature, high-humidity airflow transforms into a low-temperature, low-humidity airflow, which then enters the moisture absorption zone of the rotor. After being deeply dehumidified by the rotor, it flows to the condenser. The condenser heats the low-temperature, low-humidity airflow, transforming it into a high-temperature, low-humidity airflow. The circulating fan then directs the high-temperature, low-humidity airflow to the drum and the dehumidification duct, creating a continuous cycle that dehumidifies and dries the clothes inside the drum.

[0063] It should be noted that efficient dehumidification of the rotor is achieved through precise control of the auxiliary heat source and auxiliary cold source within the dehumidification duct. Specifically, a first temperature sensor can be installed at the air inlet of the rotor. When the heat pump system starts, the high-temperature, low-humidity airflow discharged from the condenser flows to the rotor and the dehumidification duct. The first temperature sensor continuously monitors the temperature of the airflow entering the rotor (the detected airflow temperature entering the rotor is also the airflow temperature entering the dehumidification duct), and records the airflow temperature as follows: When within a certain period of time, such as continuously Detected in seconds This indicates that the temperature of the high-temperature, low-humidity airflow discharged from the condenser is insufficient to dehumidify the rotor. Therefore, an auxiliary heat source is activated to heat the airflow within the dehumidification duct, thereby increasing the airflow temperature and achieving dehumidification of the rotor. In continuous... Detected in seconds This indicates that the temperature of the airflow discharged from the condenser is sufficient to dehumidify the rotor, thus the auxiliary heat source can be shut off to reduce energy consumption; subsequently, when continuously... Detected in seconds If the temperature is too high, it means that the airflow temperature discharged from the second air outlet is too high and may easily burn the user. Therefore, the auxiliary cold source will be turned on to reduce the temperature of the airflow discharged from the second air outlet.

[0064] Additionally, it should be noted that during the entire dehumidification process, to ensure the condenser rapidly heats the airflow, the bypass ventilation duct needs to be opened and closed at appropriate times. Specifically, a second temperature sensor is installed at the drum's air outlet to continuously monitor and record the temperature of the high-temperature, high-humidity airflow exiting the drum. ,continuous Detected in seconds This indicates that the airflow temperature is relatively low at this time. This process is the early stage of drying, and there is no need for the evaporator to significantly reduce the airflow temperature. At this time, the valve is opened, allowing part of the airflow mixed with fresh air to flow to the bypass duct, and the other part to be cooled by the evaporator, so that the airflow temperature entering the condenser is relatively high. This allows the condenser to quickly raise the temperature of the airflow. When continuous Detected in seconds If the airflow temperature is relatively high, it indicates that the process is in the middle and late stages of drying. At this time, the valve needs to be closed to avoid affecting the dehumidification of the rotor.

[0065] It should be noted that the testing time The seconds can be set to 60 seconds. It can be set to around 60-65℃. It can be set to around 75℃. It can be set to around 30-35℃. It can be set to around 45-50℃. The above parameter settings are for reference only and are not limited to these; other parameters can also be used.

[0066] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A dehumidifying heat pump system, characterized in that, include: Roller (1), used to hold items to be dehumidified; The main air duct (2) is connected to the roller (1) and forms an airflow circulation channel; The heat pump module (3) includes an evaporator (31) and a condenser (32) disposed in the main air duct (2), wherein the evaporator (31) and the condenser (32) are arranged sequentially along the airflow direction; The rotary dehumidification module (4) includes a rotary wheel, the portion of which is located between the evaporator (31) and the condenser (32) in the main air duct (2) forms a moisture absorption zone (401); the portion of which is located in the dehumidification air duct (5) forms a dehumidification zone (402). Dehumidification air duct (5) is used to introduce high-temperature airflow into the dehumidification zone (402) to dehumidify the impeller; The main air duct (2) is characterized by having an air inlet (21) that is connected to the outside. Fresh air from the outside enters the main air duct (2) through the air inlet (21) and mixes with the airflow discharged from the roller (1) before flowing to the evaporator (31).

2. The dehumidifying heat pump system as described in claim 1, characterized in that, Also includes: A bypass ventilation duct (6) is provided, bypassing the evaporator (31); and valve (61) for opening and closing the bypass ventilation duct (6); When the valve (61) is opened, the airflow discharged from the roller (1) mixes with the fresh air from the outside and is divided into two paths. One path flows to the evaporator (31), and the other path flows through the bypass ventilation duct (6) to the moisture absorption area (401) of the rotary dehumidification module (4).

3. The dehumidifying heat pump system as described in claim 1 or 2, characterized in that, The main air duct (2) is also provided with a diversion port (22), which is connected to the dehumidification air duct (5); The airflow heated by the condenser (32) is divided into two paths: one path flows to the drum (1); the other path flows through the diversion port (22) to the dehumidification duct (5) and acts on the dehumidification zone (402) of the rotary dehumidification module (4).

4. The dehumidifying heat pump system as described in claim 3, characterized in that, Also includes: An auxiliary heat source (7) is set in the dehumidification duct (5) to heat the airflow entering the dehumidification duct (5) so that the heated airflow acts on the dehumidification zone (402) of the rotary dehumidification module (4).

5. The dehumidifying heat pump system as described in claim 4, characterized in that, The auxiliary heat source (7) is electric heating.

6. The dehumidifying heat pump system as described in claim 4, characterized in that, Also includes: An auxiliary cold source (8) is set in the dehumidification duct (5) to cool the high-temperature airflow after dehumidification in the dehumidification zone (402) of the rotary dehumidification module (4).

7. The dehumidifying heat pump system as described in claim 6, characterized in that, The auxiliary cold source (8) is water-cooled or semiconductor-cooled.

8. The dehumidifying heat pump system as described in claim 1, characterized in that, The main air duct (2) is also equipped with an air intake module, which is used to circulate the airflow in the main air duct (2) and the roller (1).

9. A heat pump clothes drying device, characterized in that, Clothes are dried using a dehumidifying heat pump system as described in any one of claims 1-8.

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