Drying device

Abstract

A drying device, comprising: a drying cylinder (1); a drying air duct (2) in communication with the drying cylinder (1); a heat pump module (3) comprising an evaporator (31) and a condenser (32) mounted in the drying air duct (2), wherein the evaporator (31) is located upstream of the condenser (32); and an enhanced dehumidification apparatus (4) mounted in the drying air duct (2), wherein the enhanced dehumidification apparatus (4) is located upstream of the evaporator (31). By means of the structural configuration, the water vapor condensation capability is improved, enabling vapor to be cooled and condensed into water droplets more rapidly after entering the evaporator (31). Therefore, more moisture is removed by evaporation, and the moisture content of air passing through the evaporator (31) is reduced, effectively enhancing the dehumidification effect and the drying efficiency of the drying device.

Description

Drying apparatus The present application claims priority to Chinese Patent Application CN202410798015.0, filed on June 19, 2024, entitled "Drying apparatus", the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0001] The present application relates to the technical field of clothes treatment equipment, and specifically provides a drying apparatus. BACKGROUND

[0002] With the development of science and technology and the improvement of people's living standards, drying apparatuses such as drum washing machines with drying functions or clothes dryers have been increasingly popular. Generally, the existing drying apparatuses are provided with a heat pump system and a circulating air duct. Based on the heat circulation principle of the heat pump system, heat is transferred through the circulation of refrigerant in the system, air is heated, and hot air enters the drying drum through the circulating air duct, thereby efficiently and energy-savingly completing the drying process of clothes.

[0003] The drying process of the clothes dryer can be divided into two processes: water evaporation and water vapor condensation. The air heated by the condenser of the heat pump system enters the drying drum as dry hot air. The dry hot air passes through the wet clothes, and the water on the clothes absorbs heat and vaporizes into wet hot air. The wet hot air is converted into dry cold air after passing through the evaporator, and the water vapor in the air condenses into water droplets. The dry cold air continues to be heated by the condenser and enters the drying drum. This cycle continues until the wet clothes are dried.

[0004] However, as the temperature in the system increases, the heat exchange capacity of the evaporator decreases, and as the water in the clothes is analyzed less and less, the relative humidity of the air out of the drum also decreases. The heat pump needs to first cool the wet air to a saturated state before it can condense into water and be discharged, resulting in a relatively high water content in the air entering the drying drum, which results in poor drying effect. The existing technology usually increases the displacement of the compressor or increases the area of the heat exchanger to improve the dehumidification effect of the air, but this way has poor effect, and has the problems of high energy consumption and inconvenient installation of the heat exchanger.

[0005] Therefore, there is a need in the art for a new technical solution to solve the above problems.

[0006] The present application aims to solve the above technical problems, i.e., to solve the problem of poor drying effect of the existing drying apparatus.

[0007] The present application provides a drying apparatus, which comprises:

[0008] a drying drum;

[0009] a drying air duct in communication with the drying drum;

[0010] A heat pump module comprising an evaporator and a condenser installed in the drying air duct, the evaporator being located upstream of the condenser; and

[0011] An enhanced dehumidifying device installed in the drying air duct, and the enhanced dehumidifying device being located upstream of the evaporator.

[0012] In the preferred technical solutions of the above-described drying apparatus, the enhanced dehumidifying device comprises:

[0013] A frame arranged at intervals upstream of the evaporator;

[0014] An electrode fixedly arranged on the frame; and

[0015] A high-voltage pack capable of providing high-voltage direct current to the electrode to make the electrode release negative ions.

[0016] In the preferred technical solutions of the above-described drying apparatus, the electrode comprises a plurality of linear electrodes, and the plurality of linear electrodes are arranged at intervals on the frame; or

[0017] The electrode comprises a plurality of needle-shaped electrodes, and the plurality of needle-shaped electrodes are arranged in rows on the frame.

[0018] In the preferred technical solutions of the above-described drying apparatus, the distance between two adjacent linear electrodes is L1, and 10mm≤L1≤35mm; or

[0019] The distance between two adjacent needle-shaped electrodes is L2, and 10mm≤L2≤35mm.

[0020] In the preferred technical solutions of the above-described drying apparatus, the length of the needle-shaped electrode is H, and 20mm≤H≤30mm.

[0021] In the preferred technical solutions of the above-described drying apparatus, the distance between the linear electrode and the evaporator is D1, and 10mm≤D1≤35mm, and L1 / D1≤2; or

[0022] The distance between the needle-shaped electrode and the evaporator is D2, and 10mm≤D2≤35mm, and L2 / D2≤2.

[0023] In the preferred technical solutions of the above-described drying apparatus, the frame is perpendicular to the flow direction of the airflow in the drying air duct.

[0024] In the preferred technical solutions of the above-described drying apparatus, the electrode is made of an oxidation-resistant material.

[0025] In the preferred technical solution of the above drying equipment, the drying equipment further comprises a filter screen arranged in the drying air duct, and the filter screen is located upstream of the enhanced dehumidification device.

[0026] In the preferred technical solution of the above drying equipment, the drying equipment is a clothes dryer or a washer-dryer.

[0027] As can be understood by those skilled in the art, the technical solution of the present application provides a drying equipment, which comprises a drying cylinder, a drying air duct, a heat pump module and an enhanced dehumidification device, wherein the drying air duct is in communication with the drying cylinder; the heat pump module comprises an evaporator and a condenser installed in the drying air duct, and the evaporator is located upstream of the condenser; and the enhanced dehumidification device is installed in the drying air duct and located upstream of the evaporator. In the above technical solution, the humidity of the gas in the drying air duct can be reduced, so as to accelerate the dehumidification process of the gas and improve the drying efficiency. Specifically, after the humid hot air in the drying cylinder is discharged from the drying cylinder, the humid hot air can pass through the enhanced dehumidification device to increase the condensation force of the moisture in the humid hot air before entering the evaporator, so that the moisture in the humid hot air can be cooled and condensed into water droplets more quickly after entering the evaporator, thereby accelerating the dehumidification process of the air, drying the air to dry hot air through the condenser, and the dry hot air can more effectively take away the moisture on the clothes when entering the drying cylinder, thereby effectively improving the clothes drying efficiency.

[0028] Further, the enhanced dehumidification device of the present application comprises a frame, an electrode and a high-voltage pack, wherein the frame is arranged at the upstream of the evaporator; the electrode is fixedly arranged on the frame; and the high-voltage pack can provide high-voltage direct current to the electrode to make the electrode release negative ions. Through the above arrangement, when the humid hot air enters the enhanced dehumidification device through the drying air duct, the high-voltage pack provides high-voltage direct current to the electrode to make the electrode release negative ions, and these negative ions become additional condensation nuclei in the humid hot air. The condensation nuclei are the condensation adhesives of the water vapor, and the negative ions increase the number of the condensation nuclei, so that the water vapor is more likely to reach the supersaturation state and condense. Therefore, the amount of water condensed on the evaporator from the water vapor also increases, and the water content of the air passing through the evaporator is lower. The air dehumidified by the evaporator is heated into high-temperature dry air by the condenser, at this time, the relative humidity of the air becomes lower, which can better absorb and take away the moisture on the clothes, thereby greatly improving the clothes drying speed.

[0029] Further, the electrode of the present application comprises a plurality of linear electrodes, which are arranged on the frame in a spaced manner; or the electrode comprises a plurality of needle-shaped electrodes, which are arranged on the frame in a row. By arranging the electrode to be composed of a plurality of linear electrodes, the linear electrodes have an elongated shape and can cover a larger air flow area, so as to ensure that the air can fully contact the electrode when flowing through the electrode, thereby enhancing the generation effect of negative ions; or the electrode is composed of a plurality of needle-shaped electrodes, the needle-shaped electrodes have sharp tips, which can concentrate the electric field and promote the generation of negative ions, so as to also increase the contact area of the electrode and the air, and further improve the generation efficiency of negative ions.

[0030] Further, the frame of the present application is perpendicular to the flow direction of the air flow in the drying air duct. By this structural arrangement, since the frame is perpendicular to the air flow direction, the electrode (whether linear or needle-shaped) will directly face the air flow, thereby increasing the contact area of the electrode and the air flow, which helps to more efficiently generate and release negative ions. In addition, the perpendicular design can make the humid air in the air flow uniformly pass through the electrode area, thereby ensuring the uniform distribution of negative ions in the air flow, which can further improve the efficiency and uniformity of the entire dehumidification process.

[0031] Further, the electrode of the present application is made of an oxidation-resistant material. The oxidation-resistant material can effectively resist oxidation for a certain period of time, can maintain the stability and performance of the electrode, and can still maintain good electrical conductivity and electrochemical performance at high temperatures, so as to ensure the efficient work of the electrode and further ensure the generation efficiency of negative ions and the dehumidification effect.

[0032] Further, the drying apparatus of the present application further comprises a filter screen arranged in the drying air duct, and the filter screen is located upstream of the enhanced dehumidification device. By this arrangement, dust, fibers, hair and other impurities in the air can be effectively filtered out, so as to prevent these impurities from entering the enhanced dehumidification device and the heat pump module and affecting their normal work. Since the filter screen is located upstream of the enhanced dehumidification device, it can prevent large-particle impurities from directly contacting the electrode, thereby protecting the electrode from physical damage and pollution. By filtering out the impurities in the air, the filter screen can ensure that the air entering the enhanced dehumidification device is purer, which helps the electrode to better generate and release negative ions, thereby improving the working efficiency of the enhanced dehumidification device. BRIEF DESCRIPTION OF DRAWINGS

[0033] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0034] Fig. 1 is a schematic diagram of the operation principle of the clothes dryer of the present application;

[0035] Fig. 2 is a schematic diagram of the installation of the enhanced dehumidification device of the present application;

[0036] Figure 3 is a schematic diagram of the structure of a linear electrode of the present application;

[0037] Figure 4 is a schematic diagram of the structure of a needle electrode of the present application.

[0038] List of reference signs:

[0039] 1, drying drum;

[0040] 2, drying air duct;

[0041] 3, heat pump module; 31, evaporator; 32, condenser;

[0042] 4, enhanced dehumidification device; 41, frame; 42, electrode; 421, linear electrode; 422, needle electrode; 43, high-voltage pack;

[0043] 5, filter screen. DETAILED DESCRIPTION

[0044] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art will understand that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the protection scope of the present application. For example, although the following embodiments are introduced in combination with a clothes dryer, the enhanced dehumidification device provided by the present application is also applicable to other products that need to solve the problem of poor dehumidification effect.

[0045] Based on the problem of poor drying effect of the existing clothes dryer pointed out in the background art. The present application provides a clothes dryer, which aims to effectively solve the problem of high water content in the air leading to poor drying effect by providing an enhanced dehumidification device in the drying air duct upstream of the evaporator.

[0046] First, refer to Figure 1, wherein Figure 1 is a schematic diagram of a clothes dryer of the present application.

[0047] As shown in Figure 1, the present application provides a clothes dryer, which includes a drying drum 1, a drying air duct 2, a heat pump module 3, and an enhanced dehumidification device 4. Among them, the drying air duct 2 communicates with the drying drum 1; the heat pump module 3 includes an evaporator 31 and a condenser 32 installed in the drying air duct 2, and the evaporator 31 is located upstream of the condenser 32; the enhanced dehumidification device 4 is installed in the drying air duct 2, and the enhanced dehumidification device 4 is located upstream of the evaporator 31.

[0048] The clothes dryer provided in the present application heats air through the condenser 32 of the heat pump module 3, and delivers dry hot air into the drying drum 1 through the drying air duct 2 for drying clothes, the dry hot air passes through the wet clothes, the moisture on the clothes absorbs heat and vaporizes into humid hot air into the drying air duct 2, and through the dehumidification effect of the enhanced dehumidification device 4, the condensation force of the moisture in the humid hot air can be improved before the humid hot air enters the evaporator 31, so that the moisture in the humid hot air can be cooled and condensed into water droplets more quickly after entering the evaporator, thereby improving the dehumidification effect of the evaporator 31.

[0049] Therefore, the air treated by the enhanced dehumidification device 4 has lower humidity, and can be cooled and condensed into water droplets more quickly after entering the evaporator 31, thereby accelerating the dehumidification process of the air, and the dry air is heated into dry hot air by the condenser 32, the dry hot air enters the drying drum 1 to dry the clothes, which can more effectively remove the moisture on the clothes and improve the drying efficiency. In addition, due to the presence of the enhanced dehumidification device 4, the evaporator 31 can work more effectively during the dehumidification process, reduce unnecessary energy consumption, and make the clothes be dried in a shorter time, thereby reducing the energy consumption cost of the user.

[0050] Preferably, as shown in FIGS. 2-4, the enhanced dehumidification device 4 comprises a frame 41, an electrode 42 and a high-voltage pack 43. Wherein the frame 41 is arranged at the upstream of the evaporator 31; the electrode 42 is fixedly arranged on the frame 41; and the high-voltage pack 43 can provide high-voltage direct current to the electrode 42 to make the electrode 42 release negative ions.

[0051] The frame 41 is the basic structure of the entire enhanced dehumidification device 4, and the frame 41 is arranged at the upstream of the evaporator 31 to ensure that the humid hot air passes through the enhanced dehumidification device 4 before passing through the evaporator 31. The electrode 42 is fixedly arranged on the frame 41 and is a key component for generating negative ions. When high-voltage current passes through the electrode 42, the electrode 42 can release negative ions. The high-voltage pack 43 is a device for generating high-voltage electric energy, which is responsible for providing high-voltage direct current to the electrode 42, so as to ensure that the electrode 42 can stably and continuously release negative ions.

[0052] When the hot and humid air enters the enhanced dehumidification device 4 through the drying air duct 2, the high-voltage pack 43 provides high-voltage direct current to the electrode 42, so that the electrode 42 releases negative ions into the air. These negative ions become additional condensation nuclei in the hot and humid air. The condensation nuclei are the condensation of water vapor. Therefore, the negative ions increase the number of condensation nuclei, so that the water vapor is more likely to reach a supersaturated state and condense. As a result, the water molecules in the hot and humid air are affected by the negative ions, and the atoms on the surface of the water molecules are attracted and gathered together by the charged negative ions to form large water droplets. Further, the amount of water condensed on the evaporator 31 also increases, so that more water is removed by the evaporator 31, and the air passing through the evaporator 31 contains less water, thereby effectively improving the dehumidification effect and energy efficiency of the clothes dryer.

[0053] By releasing negative ions, the enhanced dehumidification device 4 can more effectively remove water from the hot and humid air, especially in the case of high air humidity. This dehumidification method can significantly improve the dehumidification effect, and the use of negative ions for dehumidification does not require a large amount of energy consumption, so it is more energy-saving and environmentally friendly. Further, by reducing the water content in the hot and humid air through the enhanced dehumidification device 4, the risk of frost formation in the evaporator 31 and the condenser 32 of the heat pump module 3 can be reduced, thereby prolonging the service life of the equipment.

[0054] For example, the voltage of the high-voltage direct current provided by the high-voltage pack 43 to the electrode 42 in the present application is between 5KV and 12KV, so that the ionization effect is strong enough to produce a sufficient number of negative ions from the electrode 42 to strengthen the condensation of water in the hot and humid air. Of course, in other embodiments, the voltage of the high-voltage direct current provided by the high-voltage pack 43 can be adjusted according to the actual dehumidification requirements to achieve the optimal dehumidification effect of the drying equipment. For example, the voltage of the high-voltage direct current provided by the high-voltage pack 43 to the electrode 42 can also be 15KV, 20KV, etc. The voltage of the high-voltage direct current provided by the high-voltage pack 43 to the electrode 42 is not limited in the present application.

[0055] Further, the high-voltage pack 43 is arranged inside the clothes dryer. For example, the high-voltage pack 43 of the present application is arranged at the electronic control device of the clothes dryer, so that the electronic control device can conveniently control the operation of the high-voltage pack 43. Of course, in other embodiments, the high-voltage pack 43 can be flexibly arranged according to the structure of the actual clothes dryer, and the specific arrangement position of the high-voltage pack 43 is not limited in the present application.

[0056] In a first preferred case, as shown in FIG. 3, the electrode 42 includes a plurality of wire electrodes 421, and the plurality of wire electrodes 421 are arranged on the frame 41 at intervals.

[0057] By setting the electrode 42 to be composed of a plurality of linear electrodes 421, which have an elongated shape, a larger air flow area can be covered. The plurality of linear electrodes 421 are arranged at intervals on the frame 41, which can ensure that the air can fully contact the electrode 42 when flowing through the electrode 42, thereby enhancing the generation effect of negative ions. In addition, the linear electrode 421 has a simple structure, is easy to manufacture and install; at the same time, the interval arrangement can reduce the interference between the electrodes 42, improve the uniformity and stability of the generation of negative ions.

[0058] Further, the distance between the two adjacent linear electrodes 421 is L1, 10mm≤L1≤35mm.

[0059] The distance L1 between the two adjacent linear electrodes 421 is between 10mm and 35mm, which can make the negative ion generation efficiency optimal to achieve the optimal dehumidification effect. This is because in this interval, the electric field distribution is relatively dense, and the electric field strength is relatively high, which helps to enhance the generation of negative ions, thereby improving the cohesion of water molecules, and can more effectively remove the water in the humid hot air. However, if the distance L1 between the two adjacent linear electrodes 421 is too small, it may cause the electric field to be too concentrated, and even produce a discharge phenomenon, which not only consumes additional energy, but also may cause damage to the electrode 42; if the distance L1 between the two adjacent linear electrodes 421 is too large, the electric field distribution will become sparse, and the electric field strength will be reduced, which will lead to a decrease in the efficiency of negative ion generation.

[0060] It should be noted that in other embodiments, the distance L1 between the two adjacent linear electrodes 421 can also be set to other sizes based on experiments or adjusted according to specific application scenarios and needs, such as 8mm, 9mm, 40mm, etc. The specific value of the distance L1 between the two adjacent linear electrodes 421 is not specifically limited in this application, as long as the optimal dehumidification effect can be achieved in actual application.

[0061] Further, the distance between the linear electrode 421 and the evaporator 31 is D1, 10mm≤D1≤35mm, and L1 / D1≤2.

[0062] A smaller D1 (close to 10 mm) means a smaller space between the electrode 42 and the evaporator 31, which is conducive to the direct action of negative ions on the air upstream of the evaporator 31, improving the dehumidification efficiency. However, too small D1 may cause air flow to be blocked or unnecessary interference; a larger D1 (close to 35 mm) provides more space, making the air flow more smooth, but it may also weaken the direct influence of negative ions on the air upstream of the evaporator 31, reducing the dehumidification effect. In addition, by limiting L1 / D1≤2, it can be ensured that the distribution of the electrode 42 is not too sparse, thereby maintaining the effective range of action on the water molecules in the air flow, which can further improve the dehumidification effect.

[0063] It should be noted that in other embodiments, the distance between the linear electrode 421 and the evaporator 31 is D1, which can be set to other sizes based on experiments or adjusted according to specific application scenarios and performance requirements, such as 8 mm, 9 mm, 40 mm, 42 mm, etc. The specific value of the distance between the linear electrode 421 and the evaporator 31 is not limited in this application, as long as the optimal dehumidification effect can be achieved in actual application. In addition, the ratio of L1 to D1 is not limited in this application, and the ratio of L1 to D1 can also be adjusted according to experiments or specific application scenarios and performance requirements, such as 3, 4, etc., as long as the optimal dehumidification effect can be achieved.

[0064] In a second preferred case, as shown in FIG. 4, the electrode 42 includes a plurality of needle-shaped electrodes 422 arranged in rows on the frame 41.

[0065] By setting the electrode 42 to be composed of a plurality of needle-shaped electrodes 422, the needle-shaped electrodes 422 have sharp tips, and the tip effect of the needle-shaped electrodes 422 can significantly enhance the electric field strength, concentrate the electric field and promote the generation of negative ions, and the plurality of needle-shaped electrodes 422 are arranged in rows on the frame 41 to form a dense electrode array. This arrangement can increase the contact area of the electrode 42 with the air, further improving the efficiency of the generation of negative ions. In addition, the arrangement in rows can form a uniform electric field distribution, ensuring the uniformity of the generation of negative ions when the air flows through.

[0066] It should be noted that in this application, when the electrode 42 includes a plurality of needle-shaped electrodes 422, the plurality of needle-shaped electrodes 422 are arranged in 3 to 5 rows on the frame 41. This layout can increase the contact area of the electrode 42 with the air, improve the dehumidification efficiency, and ensure the uniform distribution of negative ions in the air. Of course, in other embodiments, the plurality of needle-shaped electrodes 422 can be arranged in 2 rows, 6 rows, etc. The number of rows of the plurality of needle-shaped electrodes 422 is not limited in this application, as long as the air can smoothly pass through each row of electrodes 42 and make full use of the dehumidification capacity of each row of electrodes 42, so as to achieve the optimal dehumidification effect.

[0067] Further, the distance between the two adjacent needle electrodes 422 is L2, 10mm≤L2≤35mm.

[0068] The distance L2 between the two adjacent needle electrodes 422 is between 10mm and 35mm, which can make the negative ion generation efficiency optimal to achieve the optimal dehumidification effect. This is because in this interval, the electric field distribution is relatively dense, and the electric field strength is relatively high, which helps to enhance the generation of negative ions, thereby improving the cohesion of water molecules and effectively removing the moisture in the humid hot air. However, if the distance L2 between the two adjacent needle electrodes 422 is too small, it may cause the electric field to be too concentrated, and even discharge, which not only consumes additional energy, but also may damage the electrode 42; if the distance L2 between the two adjacent needle electrodes 422 is too large, the electric field distribution will become sparse, and the electric field strength will decrease, which will lead to a decrease in the negative ion generation efficiency.

[0069] It should be noted that in other embodiments, the distance L2 between the two adjacent needle electrodes 422 can also be set to other sizes based on experiments or adjusted according to specific application scenarios and needs, such as 8mm, 9mm, 40mm, etc. The specific value of the distance L2 between the two adjacent needle electrodes 422 is not limited herein, as long as the optimal dehumidification effect can be achieved in actual application.

[0070] Further, the length of the needle electrode 422 is H, 20mm≤H≤30mm.

[0071] By setting the length H of the needle electrode 422 to be between 20mm and 30mm, the ability of the electrode 42 to release negative ions can be ensured, the uniformity of the electric field distribution can be ensured, and thus the overall dehumidification effect can be improved. Of course, in other embodiments, the length H of the needle electrode 422 can be set to other sizes based on experiments or adjusted according to specific application scenarios and performance needs, such as 15mm, 18mm, 35mm, 40mm, etc. The specific value of the length H of the needle electrode 422 is not limited herein, as long as the optimal dehumidification effect can be achieved in actual application.

[0072] Further, the distance between the needle electrode 422 and the evaporator 31 is D2, 10mm≤D2≤35mm, and L2 / D2≤2.

[0073] A smaller D2(approximately 10 mm) means a smaller space between the electrode 42 and the evaporator 31, which is conducive to the negative ions directly acting on the air upstream of the evaporator 31, improving the dehumidification efficiency. However, too small a D2may cause air flow to be blocked or unnecessary interference; a larger D2(approximately 35 mm) provides more space, making the air flow smoother, but it can also weaken the direct impact of negative ions on the air upstream of the evaporator 31, reducing the dehumidification effect. In addition, by limiting L2 / D2≤ 2, it can be ensured that the distribution of the electrode 42 is not too sparse, thereby maintaining the effective range of action on the water molecules in the air flow, which can further improve the dehumidification effect.

[0074] It should be noted that in other embodiments, the distance between the needle-shaped electrode 422 and the evaporator 31 is D2which can be set to other sizes based on experiments or adjusted according to specific application scenarios and performance requirements, such as 8 mm, 9 mm, 40 mm, 42 mm, etc. The specific value of the distance between the needle-shaped electrode 422 and the evaporator 31 is not limited in the present application, as long as the best dehumidification effect can be achieved in actual application. In addition, the ratio of L2to D2is also not limited in the present application, and the ratio of L2to D2may also be adjusted according to experiments or specific application scenarios and performance requirements, such as 3, 4, etc. as long as the best dehumidification effect can be achieved.

[0075] Preferably, as shown in FIGS. 2-4, the frame 41 is perpendicular to the flow direction of the air flow in the drying air duct 2.

[0076] Since the frame 41 is perpendicular to the flow direction of the air flow, the electrode 42 can more effectively release negative ions into the passing air flow. This helps to improve the dehumidification effect, as negative ions can more directly combine with water molecules in the air; and the perpendicular layout allows the electrode 42 to be evenly distributed across the cross-section of the air flow, so it can ensure that every part of the air flow is affected by negative ions, thereby achieving a more uniform dehumidification effect. When the frame 41 is perpendicular to the air flow direction, the enhanced dehumidification device 4 can be more easily integrated into the drying air duct 2, without the need for additional space to accommodate the electrode 42 and the frame 41, thereby maintaining the compactness of the clothes dryer.

[0077] Preferably, the electrode 42 is made of an oxidation-resistant material.

[0078] The anti-oxidation material can effectively resist oxidation reaction within a certain time, can maintain the stability and performance of the electrode 42, can maintain good electrical conductivity and electrochemical performance at high temperature, can ensure efficient work of the electrode 42, can further ensure the generation efficiency of negative ions, and can ensure the dehumidification effect. For example, the coating of the anti-oxidation coated graphite electrode 42 can have a decomposition temperature of 1850°C or higher, and can resist relatively high temperature without melting. Of course, the electrode 42 can also be made of an anti-oxidation metal (such as platinum, gold, silver, etc.) or an oxide electrode 42 (such as platinum dioxide, cerium dioxide, etc.) material. The specific material of the electrode 42 is not limited in the present application, as long as it can ensure the generation efficiency of negative ions.

[0079] Preferably, as shown in FIG. 1, the clothes dryer of the present application further comprises a filter screen 5 arranged in the drying air duct 2, and the filter screen 5 is located upstream of the enhanced dehumidification device 4.

[0080] The filter screen 5 can capture and filter out large particulate impurities in the air, such as dust, fibers, hair, etc. Preventing impurities from being brought into the enhanced dehumidification device 4, causing the electrode 42 to be blocked, affecting the release effect of negative ions, and even causing damage to the equipment. In addition, by filtering out large particulate impurities in the air, the filter screen 5 makes the air passing through the enhanced dehumidification device 4 more pure, which helps to improve the working efficiency of the enhanced dehumidification device 4, because the pure air is more easily combined with negative ions, thereby more effectively removing moisture. In addition, reducing impurities entering the enhanced dehumidification device 4 can reduce the maintenance burden of the equipment, reduce the failure rate, and thus prolong the service life of the entire clothes dryer.

[0081] So far, the technical solution of the present application has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to related technical features without departing from the principles of the present application, and the technical solutions after these changes or replacements will fall within the protection scope of the present application.

Claims

1. A drying apparatus, characterized by, The dryer comprises: a drying drum (1); a drying air duct (2) in communication with the drying drum (1); a heat pump module (3) comprising an evaporator (31) and a condenser (32) installed in the drying air duct (2), the evaporator (31) being located upstream of the condenser (32); and an enhanced dehumidifying device (4) installed in the drying air duct (2) and located upstream of the evaporator (31). The enhanced dehumidifying device (4) comprises:

2. The drying apparatus according to claim 1, characterized by a frame (41) arranged upstream of the evaporator (31); electrodes (42) fixedly arranged on the frame (41); and a high-voltage pack (43) capable of providing high-voltage direct current to the electrodes (42) to enable the electrodes (42) to release negative ions. The electrodes (42) comprise a plurality of linear electrodes (421) arranged on the frame (41) at intervals; or 3. The drying apparatus according to claim 2, characterized in that, The electrodes (42) comprise a plurality of needle-shaped electrodes (422) arranged on the frame (41) in rows. The distance between two adjacent linear electrodes (421) is L1, and 10mm≤L1≤35mm; or 4. The drying apparatus according to claim 3, characterized in that, The distance between two adjacent needle-shaped electrodes (422) is L2, and 10mm≤L2≤35mm. The length of the needle-shaped electrodes (422) is H, and 20mm≤H≤30mm.

5. The drying apparatus according to claim 3, wherein The distance between the linear electrodes (421) and the evaporator (31) is D1, and 10mm≤D1≤35mm, and L1 / D1≤2; or 6. The drying apparatus according to claim 4, wherein The distance between the needle-shaped electrodes (422) and the evaporator (31) is D2, and 10mm≤D2≤35mm, and L2 / D2≤2. The frame (41) is perpendicular to the flow direction of the airflow in the drying air duct (2).

7. The drying apparatus according to claim 2, wherein The electrodes (42) are made of an oxidation-resistant material.

8. The drying apparatus according to claim 2, wherein The dryer further comprises a filter screen (5) arranged in the drying air duct (2) and located upstream of the enhanced dehumidifying device (4).

9. The drying apparatus according to any one of claims 1 to 8, characterized in that, The dryer is a clothes dryer or a washer-dryer.

10. The drying apparatus according to any one of claims 1 to 8, characterized in that, ​

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