Drying equipment

Abstract

The invention relates to the technical field of clothes treatment equipment, in particular to drying equipment, and aims to solve the problem that existing drying equipment is poor in drying effect. Therefore, the drying equipment comprises a drying cylinder, a drying air duct, a heat pump module and an enhanced dehumidification device, and the drying air duct communicates with the drying cylinder; the heat pump module comprises an evaporator and a condenser which are installed in the drying air channel, and the evaporator is located on the upstream of the condenser. The enhanced dehumidification device is installed in the drying air channel and located on the upstream of the evaporator. Through the structural arrangement, the condensation force of water vapor can be improved, and the water vapor can be cooled and condensed into water drops more quickly after entering the evaporator, so that more water is evaporated and removed, the water content of air passing through the evaporator is reduced, and the dehumidification effect and the drying efficiency of the drying equipment can be effectively improved.

Description

TECHNICAL FIELD

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

[0002] With the development of science and technology and the improvement of people's living standards, drying equipment such as drum washing machines with drying function or clothes dryers has been more and more popular. Generally, the existing drying equipment is provided with a heat pump system and a circulating air duct. Based on the heat circulation principle of the heat pump system, heat transfer is realized 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 of 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. The 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 still relatively high water content in the air entering the drying drum, and poor drying effect. The prior art 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. SUMMARY

[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 equipment.

[0007] The present application provides a drying equipment, 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 is installed in the drying air duct and is located upstream of the evaporator.

[0012] In the preferred technical scheme of the drying apparatus, the enhanced dehumidifying device comprises:

[0013] A frame is arranged upstream of the evaporator;

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

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

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

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

[0018] In the preferred technical scheme of the 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 scheme of the drying apparatus, the length of the needle-shaped electrode is H, and 20mm≤H≤30mm.

[0021] In the preferred technical scheme of the 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 scheme of the drying apparatus, the frame is perpendicular to the flow direction of the airflow in the drying air duct.

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

[0025] In the preferred technical scheme of the drying apparatus, the drying apparatus further comprises a filter screen arranged in the drying air duct, and the filter screen is located upstream of the enhanced dehumidifying device.

[0026] In the preferred technical scheme of the drying apparatus, the drying apparatus is a clothes dryer or a washer-dryer.

[0027] The person skilled in the art can understand that the technical scheme 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 case of using the above technical scheme, the present application can reduce the humidity of the gas in the drying air duct, thereby accelerating the dehumidification process of the gas and improving 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 improve 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, and heating the dry hot air through the condenser, so that the dry hot air can more effectively take away the moisture on the clothes, 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 this arrangement, when the humid hot air passes through the drying air duct and enters the enhanced dehumidification device, 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 of water vapor, and the negative ions increase the number of condensation nuclei, so that the water vapor is more likely to reach a supersaturated state and condense. Therefore, the amount of water condensed on the evaporator also increases, and more water is removed by the evaporator, so that the air passing through the evaporator has a lower water content. After the air is dehumidified by the evaporator, it 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 drying speed.

[0029] Still further, the electrode comprises a plurality of linear electrodes, and the plurality of linear electrodes are arranged on the frame in a spaced manner; or the electrode comprises a plurality of needle-shaped electrodes, and the plurality of needle-shaped electrodes 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, thereby ensuring 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, and the needle-shaped electrodes have sharp tips that can concentrate the electric field and promote the generation of negative ions, thereby also increasing the contact area between the electrode and the air and further improving the generation efficiency of negative ions.

[0030] Further, the frame of the present application is perpendicular to the flow direction of the airflow in the drying air duct. With this structure, since the frame is perpendicular to the airflow direction, the electrode (whether linear or needle-shaped) will directly face the airflow, thereby increasing the contact area between the electrode and the airflow, which helps to more efficiently generate and release negative ions. In addition, the perpendicular design can make the humid air in the airflow pass through the electrode area uniformly, thereby ensuring the uniform distribution of negative ions in the airflow, 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 reactions 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, ensuring efficient operation of the electrode, further ensuring the efficiency of negative ion generation, and ensuring 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. With this arrangement, dust, fibers, hair and other impurities in the air can be effectively filtered out, preventing these impurities from entering the enhanced dehumidification device and the heat pump module and affecting their normal operation. Since the filter screen is located upstream of the enhanced dehumidification device, it can prevent large particles of impurities from directly contacting the electrode, thereby protecting the electrode from physical damage and contamination. By filtering out 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 in conjunction with a clothes dryer and its accompanying drawings, in which:

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

[0035] Figure 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 the linear electrode of the present application;

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

[0038] LIST OF REFERENCE NUMBERS:

[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 the 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 embodiments below are described in conjunction 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] It should be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "provided", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0046] 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, which leads to poor drying effect, by providing an enhanced dehumidification device in the drying air duct upstream of the evaporator.

[0047] First refer to Figure 1 , wherein, Figure 1 is a schematic diagram of the clothes dryer of the present application.

[0048] As Figure 1 shown, 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, wherein 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.

[0049] The dryer provided by this invention heats air through the condenser 32 of the heat pump module 3 and delivers hot dry air to the drying drum 1 through the drying duct 2 for drying clothes. The hot dry air passes through the wet clothes, and the moisture on the clothes absorbs heat and vaporizes into hot humid air, which enters the drying duct 2. After the dehumidification effect of the enhanced dehumidification device 4, the condensation force of the moisture in the hot humid air is increased before it enters the evaporator 31. As a result, the moisture in the hot humid air can be cooled and condensed into water droplets more quickly after entering the evaporator, which improves the dehumidification effect of the evaporator 31. 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. The dry air is then heated into hot dry air by the condenser 32 and enters the drying drum 1 to dry the clothes, which can more effectively remove the moisture from the clothes and improve the drying efficiency. Furthermore, the presence of the enhanced dehumidification device 4 enables the evaporator 31 to work more efficiently during the dehumidification process, reducing unnecessary energy consumption and allowing clothes to be dried in a shorter time, thus reducing the user's energy consumption costs.

[0050] Preferably, such as Figures 2 to 4 As shown, the enhanced dehumidification device 4 includes: a frame 41, an electrode 42, and a high-pressure transformer 43. The frame 41 is spaced upstream of the evaporator 31; the electrode 42 is fixedly mounted on the frame 41; and the high-pressure transformer 43 can provide high-voltage direct current to the electrode 42 to enable the electrode 42 to release negative ions.

[0051] The frame 41 is the basic structure of the entire enhanced dehumidification device 4. The frame 41 is arranged 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 a high-voltage current passes through the electrode 42, the electrode 42 can release negative ions. The high-voltage pack 43 is responsible for providing high-voltage direct current to the electrode 42. The high-voltage pack 43 is a device for generating high-voltage electric energy to ensure that the electrode 42 can stably and continuously release negative ions. When the humid hot 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 humid hot air. Condensation nuclei are condensate adhesives of water vapor. Therefore, the negative ions increase the number of condensation nuclei, making it easier for water vapor to reach a supersaturated state and condense. As a result, the negative ions interact with the water molecules in the humid hot air. 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 vapor condensed on the evaporator 31 also increases. More water is removed by the evaporator 31, so the air passing through the evaporator 31 has a lower water content, effectively improving the dehumidification effect and energy efficiency of the clothes dryer. By releasing negative ions, the enhanced dehumidification device 4 can more effectively remove water from the humid hot air, especially in high-humidity conditions. This dehumidification method can significantly improve the dehumidification effect, and using negative ions for dehumidification does not require a large amount of energy consumption, so it is more energy-efficient and environmentally friendly. Further, reducing the amount of water in the humid hot air through the enhanced dehumidification device 4 can reduce the risk of frost on the evaporator 31 and the condenser 32 in the heat pump module 3, thereby prolonging the service life of the equipment.

[0052] In an example, the high-voltage pack 43 provides high-voltage direct current to the electrode 42 at a voltage of 5KV-12KV, so that the ionization effect is strong enough to produce a sufficient number of negative ions from the electrode 42 to enhance the condensation of water in the humid hot air. Of course, in other embodiments, the voltage of the high-voltage direct current provided by the high-voltage pack 43 to the electrode 42 can be adjusted according to actual dehumidification requirements to optimize the dehumidification effect of the drying equipment. For example, the high-voltage pack 43 can provide high-voltage direct current to the electrode 42 at a voltage of 15KV, 20KV, etc. The present application does not specifically limit the voltage of the high-voltage direct current provided by the high-voltage pack 43 to the electrode 42.

[0053] Further, the high-voltage pack 43 is arranged inside the clothes dryer. In an 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. The specific arrangement position of the high-voltage pack 43 is not specifically limited in the present application.

[0054] In a first preferred case, as shown in FIG. 1, the electrode 42 comprises a plurality of linear electrodes 421, which are arranged on the frame 41 in a spaced manner. Figure 3

[0055] By arranging 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 on the frame 41 in a spaced manner, 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, which is easy to manufacture and install; at the same time, the spaced arrangement can reduce the interference between the electrodes 42, and improve the uniformity and stability of the generation of negative ions.

[0056] Further, the distance between the two adjacent linear electrodes 421 is L1, and 10mm≤L1≤35mm.

[0057] The distance L1 between the two adjacent linear electrodes 421 in the range of 10mm to 35mm 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 negative ion generation efficiency.

[0058] 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 limited in the present application, as long as the optimal dehumidification effect can be achieved in actual application.

[0059] Further, the distance between the linear electrode 421 and the evaporator 31 is D1, and 10mm≤D1≤35mm, and L1 / D1≤2.

[0060] ​A smaller D1 (close to 10 mm) means less space between the electrode 42 and the evaporator 31, which facilitates the direct action of negative ions on the air upstream of the evaporator 31, improving dehumidification efficiency. However, an excessively small D1 may obstruct airflow or cause unnecessary interference; a larger D1 (close to 35 mm) provides more space, allowing for smoother airflow, but may also weaken the direct impact of negative ions on the air upstream of the evaporator 31, reducing dehumidification effect. Furthermore, by limiting L1 / D1 ≤ 2, it is ensured that the distribution of the electrode 42 is not too sparse, thus maintaining the effective range of action on water molecules in the airflow, further improving dehumidification effect.

[0061] It should be noted that in other embodiments, the distance D1 between the linear electrode 421 and the evaporator 31 can be set to other sizes based on experiments or adjusted according to specific application scenarios and performance requirements, such as 8mm, 9mm, 40mm, 42mm, etc. The specific value of the distance D1 between the linear electrode 421 and the evaporator 31 is not specifically limited in this invention, as long as it can achieve the best dehumidification effect in practical applications. Furthermore, the ratio of L1 to D1 is not specifically limited in this invention either; 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 best dehumidification effect can be guaranteed.

[0062] In the second preferred scenario, such as Figure 4 As shown, electrode 42 includes a plurality of needle-shaped electrodes 422, which are arranged in a row on frame 41.

[0063] By configuring the electrode 42 as a plurality of needle-shaped electrodes 422 with sharp tips, 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. Furthermore, the plurality of needle-shaped electrodes 422 are arranged in rows on the frame 41, forming a dense electrode array. This arrangement increases the contact area between the electrode 42 and the air, further improving the generation efficiency of negative ions. In addition, the row arrangement can form a uniform electric field distribution, ensuring the uniformity of negative ion generation when air flows through it.

[0064] It should be noted that in the present 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 arrangement can increase the contact area of the electrode 42 with air, improve the dehumidification efficiency, and ensure uniform distribution of negative ions in the air. Of course, in other embodiments, the plurality of needle-shaped electrodes 422 can also be arranged in 2 rows, 6 rows, etc. The number of rows of the plurality of needle-shaped electrodes 422 is not specifically limited in the present 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.

[0065] Further, the distance between the adjacent two needle-shaped electrodes 422 is L2, and 10mm≤L2≤35mm.

[0066] The distance L2 between the adjacent two needle-shaped 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 condensation of water molecules and more effectively removing the water in the humid hot air. However, if the distance L2 between the adjacent two needle-shaped electrodes 422 is too small, the electric field may be too concentrated, and even discharge phenomenon may occur, which not only consumes additional energy, but also may cause damage to the electrode 42; if the distance L2 between the adjacent two needle-shaped 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.

[0067] It should be noted that in other embodiments, the distance L2 between the adjacent two needle-shaped 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 adjacent two needle-shaped electrodes 422 is not specifically limited in the present application, as long as the optimal dehumidification effect can be achieved in actual application.

[0068] Further, the length of the needle-shaped electrode 422 is H, and 20mm≤H≤30mm.

[0069] By setting the length H of the needle-shaped 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-shaped 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-shaped electrode 422 is not specifically limited in the present application, as long as the optimal dehumidification effect can be achieved in actual application.

[0070] Further, the distance between the needle electrode 422 and the evaporator 31 is D2, 10mm≤D2≤35mm, and L2 / D2≤2.

[0071] A smaller D2 (close to 10mm) 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 D2 can cause air flow to be blocked or unnecessary interference; a larger D2 (close to 35mm) provides more space for smoother air flow, but can weaken the direct influence 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.

[0072] It should be noted that in other embodiments, the distance between the needle electrode 422 and the evaporator 31 is D2, which can be set to other sizes based on experiments or adjusted according to specific application scenarios and performance requirements, such as 8mm, 9mm, 40mm, 42mm, etc. The specific value of the distance between the needle 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 L2 to D2 is not limited in the present application, and the ratio of L2 to D2 can 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.

[0073] Preferably, as shown in FIG. 4B, the frame 41 is perpendicular to the flow direction of the air flow in the drying air duct 2. Figures 2 to 4

[0074] 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 that each part of the air flow can be ensured to be 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.

[0075] Preferably, the electrode 42 is made of an anti-oxidation material.

[0076] ​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 a 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, and 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.

[0077] 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. Figure 1

[0078] 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.

[0079] So far, the technical solutions of the present application have 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 device, characterized in that, include: Drying drum (1); Drying air duct (2), which is connected to the drying cylinder (1); The heat pump module (3) includes an evaporator (31) and a condenser (32) installed in the drying duct (2), wherein the evaporator (31) is located upstream of the condenser (32); as well as An enhanced dehumidification device (4) is installed in the drying duct (2) and is located upstream of the evaporator (31).

2. The drying equipment according to claim 1, characterized in that, The enhanced dehumidification device (4) includes: A frame (41) is provided at intervals upstream of the evaporator (31); Electrode (42), which is fixedly disposed on the frame (41); and A high-voltage transformer (43) is provided to the electrode (42) to supply high-voltage direct current so that the electrode (42) releases negative ions.

3. The drying equipment according to claim 2, characterized in that, The electrode (42) includes multiple linear electrodes (421), which are spaced apart on the frame (41); or The electrode (42) includes a plurality of needle-shaped electrodes (422), which are arranged in a row on the frame (41).

4. The drying equipment according to claim 3, characterized in that, The distance between two adjacent linear electrodes (421) is L1, where 10mm ≤ L1 ≤ 35mm; or The distance between two adjacent needle electrodes (422) is L2, 10mm≤L2≤35mm.

5. The drying equipment according to claim 3, characterized in that, The length of the needle electrode (422) is H, 20mm≤H≤30mm.

6. The drying equipment according to claim 4, characterized in that, The distance between the linear electrode (421) and the evaporator (31) is D1, 10mm≤D1≤35mm, and L1 / D1≤2; or The distance between the needle electrode (422) and the evaporator (31) is D2, 10mm≤D2≤35mm, and L2 / D2≤2.

7. The drying equipment according to claim 2, characterized in that, The frame (41) is perpendicular to the flow direction of the airflow in the drying duct (2).

8. The drying equipment according to claim 2, characterized in that, The electrode (42) is made of an antioxidant material.

9. The drying equipment according to any one of claims 1 to 8, characterized in that, The drying equipment also includes a filter screen (5) disposed in the drying air duct (2), the filter screen (5) being located upstream of the enhanced dehumidification device (4).

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

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