Control method of drying equipment and drying equipment

Abstract

The invention relates to the technical field of clothes processing equipment, in particular to a control method of drying equipment and the drying equipment, and aims to solve the problem that existing drying equipment is low in drying efficiency. The drying equipment comprises an air duct, an evaporator and an air blocking assembly, and the evaporator and the air blocking assembly are installed in the air duct; the control method comprises the steps that the target temperature of the evaporator is obtained, the actual temperature of the evaporator is obtained, the air blocking assembly is selectively opened according to the target temperature and the actual temperature, and when the actual temperature of the evaporator is larger than the target temperature, the air blocking assembly is opened according to the target temperature and the actual temperature. The condensation efficiency of the evaporator can be reduced, at the moment, the air blocking assembly is opened to block the evaporator, the contact area between the evaporator and humid and hot air is reduced, the heat exchange amount of the evaporator is reduced, the temperature of the evaporator can be reduced, the condensation efficiency of the evaporator is improved, and the drying efficiency of the drying equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of clothing processing equipment, and specifically provides a control method for a drying equipment and a drying equipment. Background Art

[0001] With the improvement of people's living standards, clothes dryers have gradually become one of the indispensable household appliances in people's daily lives.

[0002] Most existing clothes dryers install an evaporator in the drying air duct. The hot and humid air in the drying drum enters the drying air duct and fully contacts the evaporator, thereby achieving the effect of condensation and drying. During the operation of the evaporator, as the evaporator continuously exchanges heat with the hot and humid air in the drying drum, the temperature of the evaporator will continue to rise. When the temperature of the evaporator is higher than the target operating temperature of the evaporator, the condensation efficiency of the evaporator will be greatly reduced. When the temperature of the evaporator is too high, higher than the dew point temperature of the hot and humid air, the hot and humid air will no longer condense, thereby causing the drying efficiency of the dryer to drop sharply, seriously affecting the user experience.

[0003] Therefore, this field needs a new technical solution to solve the above problems. Summary of the Invention

[0004] The present invention aims to solve the above technical problem, that is, to solve the problem of low drying efficiency of existing drying equipment.

[0005] In a first aspect, the present invention provides a control method for a drying device, wherein the drying device includes an air duct, a heat pump module, and a wind shield assembly installed in the air duct, the heat pump module includes an evaporator installed in the air duct, the wind shield assembly is installed upstream of the evaporator along the air flow direction, and the wind shield assembly can be opened to cover a portion of the evaporator. The control method includes: obtaining a target temperature Tm of the evaporator, obtaining an actual temperature T1 of the evaporator, and selectively opening the wind shield assembly according to the target temperature Tm and the actual temperature T1.

[0006] In the preferred technical solution of the control method of the above-mentioned drying equipment, the step of "selectively opening the wind shield component according to the target temperature Tm and the actual temperature T1" specifically includes: comparing the actual temperature T1 with the target temperature Tm; and selectively opening the wind shield component according to the comparison result.

[0007] In the preferred technical solution of the control method of the above-mentioned drying equipment, the step of "selectively opening the windshield component according to the comparison result" specifically includes: if the actual temperature T1 is not greater than the target temperature Tm, the windshield component is not opened.

[0008] In the preferred technical solution of the control method of the above-mentioned drying equipment, the step of "selectively opening the windshield component according to the comparison result" specifically includes: if the actual temperature T1 is greater than the target temperature Tm, opening the windshield component.

[0009] In the preferred technical solution of the control method of the above-mentioned drying equipment, the target temperature Tm includes a first target temperature Tm1 and a second target temperature Tm2, ​​the first target temperature Tm1 is less than the second target temperature Tm2, ​​and the step of "selectively opening the wind shield component according to the comparison result" specifically includes: if the actual temperature T1 is greater than the first target temperature Tm1 and less than the second target temperature Tm2, ​​the wind shield component is opened to a first opening degree; if the actual temperature T1 is greater than or equal to the second target temperature Tm2, ​​the wind shield component is opened to a second opening degree; wherein, the second opening degree is greater than the first opening degree.

[0010] In the preferred technical solution of the control method of the above-mentioned drying equipment, when the wind shield assembly is opened to the first opening, the ratio of the area of ​​the evaporator blocked by the wind shield assembly to the area of ​​the windward surface of the evaporator is 1 / 4 to 1 / 3; when the wind shield assembly is opened to the second opening, the ratio of the area of ​​the evaporator blocked by the wind shield assembly to the area of ​​the windward surface of the evaporator is 1 / 3 to 1 / 2.

[0011] In the preferred technical solution of the control method of the above-mentioned drying equipment, the step of "obtaining the target temperature Tm of the evaporator" specifically includes: obtaining the temperature T2 of the airflow upstream of the evaporator, obtaining the humidity W of the airflow upstream of the evaporator, and determining the target temperature Tm based on the temperature T2 and the humidity W.

[0012] In the preferred technical solution of the control method of the above-mentioned drying equipment, the step of "determining the target temperature Tm based on the temperature T2 and the humidity W" specifically includes: calculating the dew point temperature T3 of the airflow upstream of the evaporator, and determining the target temperature Tm based on the dew point temperature T3.

[0013] In the preferred technical solution of the control method of the drying equipment, the step of "determining the target temperature Tm according to the dew point temperature T3" specifically includes: Tm = T3 - K, where K is a fixed value.

[0014] In a second aspect, the present invention further provides a drying device. The drying device of the present invention further includes a controller, and the controller is configured to execute the above control method.

[0015] Those skilled in the art will understand that, in the preferred technical solution of the present invention, the drying equipment of the present invention obtains the target temperature Tm and the actual temperature T1 of the evaporator, and compares the actual temperature T1 with the target temperature Tm. When the actual temperature T1 of the evaporator is greater than the target temperature Tm, the temperature of the evaporator is too high and the condensation efficiency of the evaporator will be reduced. At this time, the wind shield assembly is opened to block the evaporator, which reduces the contact area between the evaporator and the hot and humid air and reduces the heat exchange amount of the evaporator, thereby reducing the temperature of the evaporator, improving the condensation efficiency of the evaporator, and thereby improving the drying efficiency of the drying equipment.

[0016] Furthermore, the drying equipment of the present invention sets the target temperature Tm to include a first target temperature Tm1 and a second target temperature Tm2, ​​that is, the target temperature is a temperature range. When the actual temperature T1 of the evaporator is between the first target temperature Tm1 and the second target temperature Tm2, ​​the temperature of the evaporator is higher at this time, and the wind shield component is opened to the first opening to block a small part of the evaporator, that is, to block 1 / 4 to 1 / 3 of the area of ​​the windward surface of the evaporator. When the actual temperature T1 of the evaporator is greater than the second target temperature Tm2, ​​the temperature of the evaporator is too high, and the wind shield component is opened to the first opening to block a larger part of the evaporator, that is, to block 1 / 3 to 1 / 2 of the area of ​​the windward surface of the evaporator. By controlling the opening degree of the wind shield component, the flow rate of hot and humid air passing through the evaporator can be more accurately controlled, so that the temperature of the evaporator can be more accurately adjusted, so that the evaporator is maintained at the optimal operating temperature, thereby improving the drying efficiency of the drying equipment.

[0017] Furthermore, the drying equipment of the present invention calculates the dew point temperature T3 of the air flow upstream of the evaporator by obtaining the temperature T2 of the air flow upstream of the evaporator and the humidity W of the air flow upstream of the evaporator, and then subtracts the fixed value K from the dew point temperature T3 to obtain the target temperature Tm, so that the value of the target temperature Tm is more accurate, thereby enabling the evaporator to be maintained at the optimal operating temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0019] Figure 1 It is a structural schematic diagram of the drying equipment of the present invention;

[0020] Figure 2 yes Figure 1 Cross-sectional view at AA in the middle;

[0021] Figure 3 is a flow chart of a control method for a drying device of the present invention;

[0022] Figure 4It is a flow chart of an embodiment of a control method for drying equipment of the present invention.

[0023] List of reference numerals:

[0002] 1. Drying drum; 11. Air inlet; 12. Air return outlet;

[0003] 21. Evaporator; 22. Condenser;

[0024] 3. Air duct;

[0025] 4. Wind curtain. DETAILED DESCRIPTION

[0004] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. For example, although the following embodiments are described in conjunction with a clothes dryer, the technical solution of the present invention can also be applied to other drying equipment, such as a washer-dryer, a clothing care machine, etc. Such adjustments and changes to the application objects do not deviate from the principles and scope of the present invention and should be limited within the scope of protection of the present invention.

[0026] The preferred embodiment of the present invention is described below with reference to the accompanying drawings. It should be understood by those skilled in the art that, in the description of the present invention, although the various steps of the control method of the present invention are described in a specific order in this application, these orders are not restrictive, and those skilled in the art can perform the steps in a different order without departing from the basic principles of the present invention. For example, the execution order of steps S100 to S200 of the control method of the present invention can also be interchanged, or steps S100 to S200 can be performed simultaneously. The technical solution after adjustment is equivalent to the technical solution described in this application, and therefore will also fall within the scope of protection of the present invention.

[0027] It should be noted that, in the description of the present invention, terms such as "left," "right," "upper," "lower," "top," and "bottom" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that the device or component described must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "connected," and "installed" should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, or an integral connection. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0029] Based on the problem of low drying efficiency of existing drying equipment pointed out in the background technology, the present invention provides a drying equipment, which aims to obtain the target temperature and actual temperature of the evaporator and compare the actual temperature with the target temperature. When the actual temperature of the evaporator is greater than the target temperature, the temperature of the evaporator is too high and the condensation efficiency of the evaporator will be reduced. At this time, the wind shield assembly is opened to block the evaporator, which reduces the contact area between the evaporator and the hot and humid air and reduces the heat exchange of the evaporator, thereby reducing the temperature of the evaporator, improving the condensation efficiency of the evaporator, and thus improving the drying efficiency of the drying equipment.

[0030] Specifically, see first Figure 1 and Figure 2 , Figure 1 It is a structural diagram of the drying equipment of the present invention, Figure 2 yes Figure 1 Cross-sectional view at AA in the middle.

[0031] like Figure 1 and Figure 2 As shown, the drying device of the present invention includes an air duct 3 and an evaporator 21 and a wind shield assembly installed in the air duct 3. The wind shield assembly is installed upstream of the evaporator 21 along the air flow direction. The wind shield assembly can be opened to cover a part of the evaporator 21.

[0032] For example, Figure 1 and Figure 2 As shown, the present invention provides a clothes dryer, which includes a drying drum 1, an air duct 3, an evaporator 21 and a windshield assembly. The drying drum 1 is used to hold clothes that need to be dried. The air duct 3 is arranged below the drying drum 1. The left and right ends of the air duct 3 are respectively connected with the return air port 12 and the air inlet 11 of the drying drum 1. The evaporator 21 is installed in the air duct 3. The evaporator 21 can condense the humid and hot air flowing through. The humid and hot air in the drying drum 1 enters the air duct 3 through the return air port 12. The humid and hot air fully contacts the evaporator 21 in the air duct 3 and condenses, then flows through the condenser 22 to be heated and turned into dry and hot air. The dry and hot air finally enters the drying drum 1 through the air inlet 11, takes away the water vapor generated by the clothes, and enters the air duct 3 again, thereby forming a circulating wind to dry the clothes, thereby achieving the effect of drying the clothes.

[0033] Exemplarily, the wind shield assembly includes a driving mechanism and an air curtain 4, which is installed upstream of the evaporator 21. Figure 1 From above, the air curtain 4 is installed on the top wall of the air duct 3 on the left side of the evaporator 21. The driving mechanism can drive the rotating shaft of the air curtain 4 to open and close the air curtain 4, so that the air curtain 4 can cover a part of the evaporator 21. When the evaporator 21 is at an appropriate temperature, the condensation efficiency of the evaporator 21 is the highest. When the temperature of the evaporator 21 is too high, after the hot and humid air contacts the evaporator 21, the efficiency of condensing water vapor in the hot and humid air into water droplets is reduced, which causes the condensation efficiency of the evaporator 21 to be reduced. At this time, the wind shield assembly is opened to cover part of the evaporator 21, which reduces the contact area between the evaporator 21 and the hot and humid air, reduces the heat exchange of the evaporator 21, and thus can reduce the temperature of the evaporator 21, so that the evaporator 21 is at the optimal working temperature, improves the condensation efficiency of the evaporator 21, and thereby improves the drying efficiency of the dryer.

[0034] It should be noted that the windshield assembly of the present invention is not limited to the structural form of the driving mechanism and the wind curtain introduced above. For example, those skilled in the art can also set the windshield assembly in the form of a driving mechanism + windshield, and the driving mechanism drives the windshield to move up and down so that the windshield blocks the evaporator 21. Alternatively, the windshield assembly can be set in the form of a driving mechanism + swing blade, and the driving mechanism drives the swing blade to rotate so that the swing blade blocks the evaporator 21, etc. Such adjustments and changes to the specific form of the windshield assembly do not deviate from the principle and scope of the present invention, and should be limited within the scope of protection of the present invention.

[0035] On the other hand, based on the above-mentioned clothes dryer, the present invention also provides a control method for the clothes dryer, such as Figure 3 As shown, the control method of the present invention includes the following steps:

[0036] S100 : Acquire the target temperature Tm of the evaporator 21 .

[0037] Exemplarily, the target temperature Tm of the evaporator 21 is the temperature of the evaporator 21 in an optimal working state, that is, when the power of the compressor remains unchanged, the condensing efficiency of the evaporator 21 is the highest at the target temperature Tm.

[0038] It should be noted that the target temperature Tm can be a preset value, or it can be calculated based on the temperature and humidity conditions of the hot and humid air in the air duct 3, or it can be measured by a humidity measuring device, such as a dew point hygrometer to measure the dew point temperature. Such flexible adjustment and change does not deviate from the principle and scope of the present invention and should be limited within the scope of protection of the present invention.

[0039] For example, Figure 4 As shown, step S100 includes steps S110 to S140.

[0040] S110 : Acquire the temperature T2 of the airflow upstream of the evaporator 21 .

[0041] For example, a first temperature sensor is installed in the air duct 3 of the present invention near the evaporator 21. The first temperature sensor can detect the temperature T2 of the airflow upstream of the evaporator 21 and transmit the detected temperature information to the controller of the dryer by telecommunication.

[0042] S120 : Obtain the humidity W of the airflow upstream of the evaporator 21 .

[0043] For example, a humidity sensor is installed in the air duct 3 of the present invention near the evaporator 21. The humidity sensor can detect the humidity W of the airflow upstream of the evaporator 21 and transmit the detected humidity information to the controller of the dryer by telecommunication.

[0044] S130 : Calculate the dew point temperature T3 of the airflow upstream of the evaporator 21 .

[0045] For example, the controller of the clothes dryer may calculate the dew point temperature according to the following formula: Where ln represents the natural logarithm, and the dew point temperature T3 is the lowest temperature at which water vapor in the hot and humid air condenses into water.

[0046] S140: Tm=T3-K, where K is a fixed value.

[0047] For example, the calculated dew point temperature T3 is 20°C, the temperature coefficient K is 10, Tm=T3-K=20-10=10°C, that is, when the power of the compressor remains unchanged, the optimal operating temperature Tm of the evaporator 21 is 10°C. When the temperature of the evaporator 21 is greater than 10°C, the condensation efficiency of the evaporator 21 will decrease. At this time, the windshield assembly is opened to block the evaporator 21, which reduces the contact area between the evaporator 21 and the hot and humid air, and reduces the heat exchange of the evaporator 21, thereby reducing the temperature of the evaporator 21 and improving the condensation efficiency of the evaporator 21.

[0048] It should be noted that the present invention does not limit the numerical value of the dew point temperature T3. For example, those skilled in the art can calculate the dew point temperature T3 to be 15°C or 25°C according to the calculation formula. Such adjustment and change of the specific numerical value of the dew point temperature T3 does not deviate from the principle and scope of the present invention and should be limited within the scope of protection of the present invention.

[0049] It should also be noted that the present invention does not limit the numerical value of the temperature coefficient K. For example, those skilled in the art can also set the temperature coefficient K to 8°C, 12°C or 14°C, etc. Such adjustment and change of the specific numerical value of the temperature coefficient K does not deviate from the principle and scope of the present invention and should be limited within the scope of protection of the present invention.

[0050] S200 : Acquire the actual temperature T1 of the evaporator 21 .

[0051] For example, the evaporator 21 of the present invention is equipped with a second temperature sensor, which can detect the actual temperature T1 of the evaporator 21 and transmit the detected temperature information to the controller of the clothes dryer by telecommunication.

[0052] S300: selectively opening the windshield assembly according to the actual temperature T1 and the target temperature Tm.

[0053] Exemplarily, the actual temperature T1 is compared with the target temperature Tm. When the actual temperature T1 is less than or equal to the target temperature Tm, that is, the actual temperature T1 of the evaporator 21 is lower than the target temperature Tm, the evaporator 21 is in the best working state at this time. When the actual temperature T1 is greater than the target temperature Tm, that is, the actual temperature T1 of the evaporator 21 is higher than the target temperature Tm, the temperature of the evaporator 21 is too high, and the condensation efficiency of the evaporator 21 will be reduced. At this time, the windshield assembly is opened to block the evaporator 21, which reduces the contact area between the evaporator 21 and the hot and humid air, and reduces the heat exchange of the evaporator 21, thereby reducing the temperature of the evaporator 21, improving the condensation efficiency of the evaporator 21, and thereby improving the drying efficiency of the dryer.

[0054] For example, Figure 4 As shown, step S300 includes steps S310 to S330.

[0055] S310: Compare the actual temperature T1 with the target temperature Tm.

[0056] For example, the actual temperature T1 and the target temperature Tm may be directly compared, or the ratio of the actual temperature T1 to the target temperature Tm may be calculated.

[0057] S320: If the actual temperature T1 is not greater than the target temperature Tm, the windshield assembly is not opened.

[0058] That is, the actual temperature T1 of the evaporator 21 is less than or equal to the target temperature Tm, that is, the actual temperature T1 of the evaporator 21 is lower than the target temperature Tm. At this time, the evaporator 21 is in the best working state and there is no need to open the wind shield assembly.

[0059] S330: If the actual temperature T1 is greater than the target temperature Tm, the windshield assembly is opened.

[0060] That is to say, the actual temperature T1 of the evaporator 21 is greater than the target temperature Tm, that is, the actual temperature T1 of the evaporator 21 is higher than the target temperature Tm. The temperature of the evaporator 21 is too high, and the condensation efficiency of the evaporator 21 will be reduced. At this time, the wind shield assembly is opened to block the evaporator 21, which reduces the contact area between the evaporator 21 and the hot and humid air, and reduces the heat exchange of the evaporator 21, thereby reducing the temperature of the evaporator 21, improving the condensation efficiency of the evaporator 21, and thereby improving the drying efficiency of the dryer.

[0061] Exemplarily, the target temperature Tm includes a first target temperature Tm1 and a second target temperature Tm2 , and the first target temperature Tm1 is lower than the second target temperature Tm2 .

[0062] For example, Figure 4 As shown, step S330 includes steps S331 to S332.

[0063] S331: If the actual temperature T1 is greater than the first target temperature Tm1 and is less than the second target temperature Tm2, ​​the windshield assembly is opened to a first opening degree.

[0064] For example, the first target temperature Tm1 is 10°C, the second target temperature Tm2 is 15°C, the actual temperature T1 is 14°C, Tm1<T1<Tm2, at this time the temperature of the evaporator 21 is already higher than the optimal operating temperature, but the temperature range exceeded is not large. The controller controls the windshield assembly to open to block a small part of the evaporator 21. At this time, most of the evaporator 21 that is not blocked is in contact with the hot and humid air, which reduces the heat exchange of the evaporator 21, thereby reducing the temperature of the evaporator 21, so that the temperature of the evaporator 21 is reduced to less than the first target temperature Tm1, so that the evaporator 21 is at the optimal operating temperature, thereby improving the condensation efficiency of the evaporator 21.

[0065] S332: If the actual temperature T1 is greater than or equal to the second target temperature Tm2, ​​the windshield assembly is opened to a second opening degree, wherein the second opening degree is greater than the first opening degree.

[0066] For example, the first target temperature Tm1 is 10°C, the second target temperature Tm2 is 15°C, the actual temperature T1 is 18°C, T1>Tm2, at this time the temperature of the evaporator 21 is already higher than the optimal operating temperature, and the temperature range exceeded is too large, which seriously affects the condensation efficiency of the evaporator 21. At this time, the controller controls the windshield assembly to open to block most of the evaporator 21. At this time, the unblocked part of the evaporator 21 is in contact with the hot and humid air, further reducing the heat exchange of the evaporator 21, so that the temperature of the evaporator 21 can be quickly reduced, so that the temperature of the evaporator 21 is reduced to less than the first target temperature Tm1, so that the evaporator 21 is at the optimal operating temperature, thereby improving the condensation efficiency of the evaporator 21.

[0067] It should be noted that the present invention does not limit the numerical values ​​of the first target temperature Tm1 and the second target temperature Tm2. For example, those skilled in the art may also set the first target temperature Tm1 to 8°C or 12°C, etc., and may also set the second target temperature Tm2 to 13°C or 17°C, etc. Such adjustments and changes to the specific numerical values ​​of the target temperature Tm1 and the second target temperature Tm2 do not deviate from the principle and scope of the present invention, and should be limited within the scope of protection of the present invention.

[0068] It should also be noted that the present invention does not limit the size of the first opening and the second opening. For example, those skilled in the art may also set the first opening to 1 / 4 or 1 / 3, or may also set the second opening to 2 / 5 or 1 / 2, etc., as long as the temperature of the evaporator 21 can be lowered. Such adjustment and change of the specific size of the first opening and the second opening does not deviate from the principle and scope of the present invention, and should be limited within the scope of protection of the present invention.

[0069] Preferably, when the windshield assembly of the clothes dryer of the present invention is opened to a first opening degree, the ratio of the area of ​​the evaporator 21 blocked by the windshield assembly to the area of ​​the windward surface of the evaporator 21 is 1 / 4 to 1 / 3.

[0070] That is to say, when the windshield assembly is opened to the first opening, the windshield assembly can block between 1 / 4 and 1 / 3 of the windward surface area of ​​the evaporator 21. By fine-tuning the blocking area, the windshield assembly can achieve precise control of the temperature of the evaporator 21.

[0071] Preferably, when the windshield assembly of the clothes dryer of the present invention is opened to the second opening degree, the ratio of the area of ​​the evaporator 21 blocked by the windshield assembly to the area of ​​the windward surface of the evaporator 21 is 1 / 3 to 1 / 2.

[0072] That is to say, when the windshield assembly is opened to the second opening, the windshield assembly can block between 1 / 3 and 1 / 2 of the area of ​​the windward surface of the evaporator 21. By fine-tuning the blocking area, the windshield assembly can achieve precise control of the temperature of the evaporator 21.

[0073] Preferably, the clothes dryer of the present invention further comprises a controller, which can control the clothes dryer to perform any one of the above control methods.

[0074] Those skilled in the art will appreciate that although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of this application and to form different embodiments. For example, in the claims of this application, any of the claimed embodiments may be used in any combination.

[0075] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A control method for drying equipment, It is characterized in that The drying device comprises an air duct, a heat pump module and a wind shielding assembly installed in the air duct, the heat pump module comprises an evaporator installed in the air duct, the wind shielding assembly is installed upstream of the evaporator along the air flow direction, the wind shielding assembly can be opened to shield a part of the evaporator, and the control method comprises: Obtaining a target temperature Tm of the evaporator; Obtaining the actual temperature T1 of the evaporator; The wind shield assembly is selectively opened according to the target temperature Tm and the actual temperature T1.

2. The control method of the drying equipment according to claim 1, It is characterized in that The step of "selectively opening the windshield assembly according to the target temperature Tm and the actual temperature T1" specifically includes: Comparing the actual temperature T1 with the target temperature Tm; According to the comparison result, the wind shield assembly is selectively opened.

3. The control method of the drying equipment according to claim 2, It is characterized in that The step of "selectively opening the windshield assembly according to the comparison result" specifically includes: If the actual temperature T1 is not greater than the target temperature Tm, the wind shield assembly is not opened.

4. The control method of the drying equipment according to claim 2, It is characterized in that The step of "selectively opening the windshield assembly according to the comparison result" specifically includes: If the actual temperature T1 is greater than the target temperature Tm, the wind shield assembly is opened.

5. The control method of the drying equipment according to claim 4, It is characterized in that The target temperature Tm includes a first target temperature Tm1 and a second target temperature Tm2, ​​the first target temperature Tm1 is less than the second target temperature Tm2, ​​and the step of "opening the windshield assembly" specifically includes: If the actual temperature T1 is greater than the first target temperature Tm1 and less than the second target temperature Tm2, ​​the wind shield assembly is opened to a first opening degree; If the actual temperature T1 is greater than or equal to the second target temperature Tm2, ​​opening the wind shield assembly to a second opening degree; Wherein, the second opening is greater than the first opening.

6. The control method of the drying equipment according to claim 5, It is characterized in that When the wind shield assembly is opened to the first opening degree, the ratio of the area of ​​the evaporator blocked by the wind shield assembly to the area of ​​the windward surface of the evaporator is 1 / 4 to 1 / 3; When the wind shield assembly is opened to the second opening degree, the ratio of the area of ​​the evaporator blocked by the wind shield assembly to the area of ​​the windward surface of the evaporator is 1 / 3 to 1 / 2.

7. The control method of the drying equipment according to claim 1, It is characterized in that The step of "obtaining the target temperature Tm of the evaporator" specifically includes: Obtaining the temperature T2 of the airflow upstream of the evaporator; Obtaining the humidity W of the airflow upstream of the evaporator; According to the temperature T2 and the humidity W, the target temperature Tm is determined.

8. The control method of the drying equipment according to claim 7, It is characterized in that The step of "determining the target temperature Tm according to the temperature T2 and the humidity W" specifically includes: Calculating the dew point temperature T3 of the air flow upstream of the evaporator; The target temperature Tm is determined according to the dew point temperature T3.

9. The control method of the drying equipment according to claim 8, It is characterized in that The step of “determining the target temperature Tm according to the dew point temperature T3” specifically includes: Tm=T3-K, where K is a fixed value.

10. A drying device, It is characterized in that The device comprises a controller configured to execute the control method according to any one of claims 1 to 9.

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