Dehumidifier

Abstract

The present invention discloses a dehumidifier, comprising: a controller configured to: determine whether the current operating frequency f_t falls within a first frequency interval; if the current operating frequency f_t falls within the first frequency interval, control the air volume adjustment plate to close the inlet; if the current operating frequency f_t does not fall within the first frequency interval, determine whether the current operating frequency f_t falls within a second frequency interval; if the current operating frequency f_t falls within the second frequency interval, control the air volume adjustment plate to open a corresponding angle according to the current operating frequency f_t; if the current operating frequency f_t does not fall within the second frequency interval, determine whether the current operating frequency f_t falls within a third frequency interval; if the current operating frequency f_t falls within the third frequency interval, control the air volume adjustment plate to be fully opened. The dehumidifier according to the present invention is conducive to improving the oil return effect of the compressor, the dehumidifier can achieve the best energy efficiency ratio, improve the overload operation of the compressor, and ensure the service life of the compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of dehumidifiers, in particular to a dehumidifier. Background Art

[0002] The structure of the dehumidifier includes a refrigeration system, a box system, a fan system and an electronic control system. The refrigeration system cycle is as follows: the refrigerant enters the compressor and is compressed into high-temperature and high-pressure refrigerant vapor, then condenses and releases heat in the condenser to become high-temperature and high-pressure refrigerant liquid, and undergoes an adiabatic throttling process through the throttling component to become a low-temperature and low-pressure refrigerant liquid (or two-phase), and finally enters the evaporator to evaporate and absorb heat to become a low-temperature and low-pressure refrigerant vapor and then flows back to the compressor, and the cycle repeats.

[0003] Based on the above-mentioned refrigeration system, the air dehumidification process of the dehumidifier is as follows: the fan draws the indoor air into the upper shell of the dehumidifier through the air inlet and passes through the evaporator. At this time, the indoor air is cooled and dehumidified in the evaporator to become low-temperature saturated moist air. The low-temperature saturated moist air is then heated and dehumidified through the condenser to become dry medium-temperature gas and then discharged into the indoor environment.

[0004] In the related art, the air volume passing through the evaporator and condenser in a household dehumidifier is basically the same, and when the compressor is running at a low frequency, the motor speed will be adjusted to a low wind speed in order to increase the dehumidification capacity. At this time, the air volume passing through the condenser will decrease, which will cause the operating power of the dehumidifier to increase, and the dehumidifier cannot achieve the best energy efficiency ratio. In addition, when the compressor is running at a low frequency, the compressor is running at a partial load state. At this time, the speed of the compressor is low, which slows down the return air speed and causes poor oil return. When the compressor is running at a high frequency, for a small-capacity compressor, due to the increase in frequency, the compressor blades slide back and forth on the inner wall of the stationary cylinder, causing greater wear, thereby reducing the service life of the compressor. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a dehumidifier that improves the oil return performance of the compressor when the compressor is operated at a low frequency, achieves an optimal energy efficiency ratio when the compressor is operated at a medium frequency, and improves the overload condition of the compressor when the compressor is operated at a high frequency.

[0006] The dehumidifier according to an embodiment of the present invention includes: a refrigerant circulates in a refrigerant circuit composed of a compressor, a condenser, a throttling device and an evaporator in the order of a refrigeration cycle, wherein the evaporator and the condenser are spaced apart to define an air flow channel between the evaporator and the condenser; an air volume adjustment plate, the air volume adjustment plate is rotatably arranged at the inlet of the air flow channel, and the opening of the air volume adjustment plate is adjustable to adjust the size of the inlet of the air flow channel; a stepping motor, the stepping motor is connected to the air volume adjustment plate, and is used to adjust the opening of the air volume adjustment plate; a controller, the controller is configured to: determine the current operating frequency f_t of the compressor; determine whether the current operating frequency f_t falls within a first frequency range; if the current operating frequency f_t falls within the first frequency range If the current operating frequency f_t falls within the first frequency range, the air volume adjustment plate is controlled to close the inlet of the air flow channel; if the current operating frequency f_t does not fall within the first frequency range, it is determined whether the current operating frequency f_t falls within the second frequency range, and the frequency in the second frequency range is higher than the frequency in the first frequency range; if the current operating frequency f_t falls within the second frequency range, the air volume adjustment plate is controlled to open a corresponding angle according to the current operating frequency f_t; if the current operating frequency f_t does not fall within the second frequency range, it is determined whether the current operating frequency f_t falls within the third frequency range, and the frequency in the third frequency range is higher than the frequency in the second frequency range; if the current operating frequency f_t falls within the third frequency range, the air volume adjustment plate is controlled to be fully opened.

[0007] According to an embodiment of the present invention, a dehumidifier is provided with a swingable air volume adjustment plate at the inlet of the air flow channel defined by the evaporator and condenser, and a controller is configured to determine the opening angle of the air volume adjustment plate based on the current operating frequency of the compressor. As a result, compared to conventional dehumidifiers, when the compressor operates at a low frequency, the compressor's suction temperature can be increased, which helps improve the compressor's oil return. When the compressor operates at a medium frequency, the evaporator's ventilation volume is optimized, increasing the dehumidification capacity while achieving the optimal energy efficiency ratio. When the compressor operates at a high frequency, the compressor's overload condition can be improved, thereby ensuring the compressor's service life.

[0008] According to some embodiments of the present invention, the dehumidifier further includes: a fan for sucking in indoor air and flowing it through the evaporator and the condenser in sequence; the controller is further configured to: if the current operating frequency f_t falls within the second frequency range, determine whether the current speed of the fan is a high wind speed; if the current speed of the fan is a high wind speed, control the air volume adjustment plate to open a corresponding angle according to the current operating frequency f_t and the high wind speed; if the current speed of the fan is not a high wind speed, determine whether the current speed of the fan is a medium wind speed; if the current speed of the fan is a medium wind speed, control the air volume adjustment plate to open a corresponding angle according to the current operating frequency f_t and the medium wind speed; if the current speed of the fan is not a medium wind speed, determine whether the current speed of the fan is a low wind speed; if the current speed of the fan is a low wind speed, control the air volume adjustment plate to open a corresponding angle according to the current operating frequency f_t and the low wind speed.

[0009] According to some embodiments of the present invention, the controller is further configured to: if the current operating frequency f_t falls within the second frequency range, determine, based on the current operating frequency f_t, that the angle of the air volume adjustment plate corresponding to the current operating frequency f_t is X degrees; and control the stepper motor to drive the air volume adjustment plate to rotate to X degrees.

[0010] According to some embodiments of the present invention, the controller is further configured to: before determining the current operating frequency f_t of the compressor, determine whether the compressor has been running continuously for a first period of time; if the judgment result is yes, execute the step of determining the current operating frequency f_t of the compressor; if the judgment result is no, continue to determine whether the compressor has been running continuously for the first period of time.

[0011] According to some embodiments of the present invention, the controller is further configured to: determine whether the dehumidifier enters the defrost mode; if the dehumidifier enters the defrost mode, control the air volume adjustment plate to close the inlet of the air flow channel; if the dehumidifier does not enter the defrost mode, return to the step of determining whether the compressor has been running continuously for the first time period.

[0012] According to some embodiments of the present invention, the controller is further configured to: after determining whether the dehumidifier has entered the defrost mode, determine whether the dehumidifier has exited the defrost mode; if the dehumidifier has exited the defrost mode, determine whether the dehumidifier has entered the shutdown mode; if the dehumidifier has entered the shutdown mode, control the air volume adjustment plate to close the entrance of the air flow channel; if the dehumidifier has not entered the shutdown mode, return to the step of determining whether the compressor has been running continuously for the first time period; if the dehumidifier has not exited the defrost mode, return to the step of determining whether the compressor has been running continuously for the first time period.

[0013] According to some embodiments of the present invention, a first wind shield is provided between both sides of the evaporator and the condenser, and the two first wind shields, the evaporator and the condenser jointly define the air flow channel, and the air volume adjustment plate is located on the top of the evaporator and the condenser.

[0014] According to some embodiments of the present invention, a second wind shield is provided between the top of the evaporator and the condenser, and the second wind shield, the evaporator and the condenser together define the air flow channel; there are multiple air volume adjustment plates, and the multiple air volume adjustment plates are respectively provided between the two sides of the evaporator and the condenser.

[0015] According to some embodiments of the present invention, the dehumidifier further includes: an auxiliary condenser, which is arranged in the air flow channel, for secondary utilization of the air flowing through the evaporator, and for performing heat exchange on the indoor diverted air entering from the inlet of the air flow channel to achieve dehumidification of the indoor diverted air.

[0016] According to some embodiments of the present invention, the auxiliary condenser includes: a frame; a plurality of condensation sheets, wherein the plurality of condensation sheets are arranged in the frame, and the plurality of condensation sheets are arranged at intervals along the thickness direction of the condensation sheet, and each of the condensation sheets is formed with a plurality of through holes arranged at intervals along the length direction of the condensation sheet, and the edge of each through hole is provided with an extension portion extending toward one side in the thickness direction of the condensation sheet, and the plurality of extension portions of the plurality of condensation sheets are respectively opposite to each other along the thickness direction of the condensation sheet to respectively form a plurality of channels, and the plurality of channels are connected to the inlet of the air flow channel, and the indoor air flowing through the evaporator flows through the plurality of condensation sheets to exchange heat with the indoor diversion air in the plurality of channels.

[0017] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0019] Figure 1 is a schematic diagram of a dehumidifier according to an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of a dehumidifier according to an embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of a dehumidifier according to an embodiment of the present invention, wherein the housing is not shown;

[0022] Figure 4 yes Figure 3 The enlarged view of section A shown in the middle circle;

[0023] Figure 5 yes Figure 3 Schematic diagram of the condenser, evaporator, air volume adjustment plate and auxiliary condenser of the dehumidifier shown in;

[0024] Figure 6 is a schematic diagram of an auxiliary condenser of a dehumidifier according to an embodiment of the present invention;

[0025] Figure 7 is a schematic diagram of a first wind shield, an air volume adjustment plate, and a stepping motor of a dehumidifier according to an embodiment of the present invention;

[0026] Figure 8 yes Figure 7 The enlarged view of the part B shown in the middle circle;

[0027] Figure 9 is a flow chart of a controller of a dehumidifier according to an embodiment of the present invention;

[0028] Figure 10 is a flow chart of a controller of a dehumidifier according to another embodiment of the present invention.

[0029] Reference numerals:

[0030] 100: Dehumidifier;

[0031] 1: Condenser; 2: Evaporator; 3: Air flow channel; 4: Air volume adjustment plate; 5: Controller;

[0032] 51: storage module; 52: processing module; 6: fan; 7: stepper motor; 8: first windshield;

[0033] 9: auxiliary condenser; 91: through hole; 10: housing; 101: air outlet. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figures 1-10 A dehumidifier 100 according to an embodiment of the present invention is described.

[0035] like Figures 1-10 As shown, the real-time dehumidifier 100 according to the present invention includes a compressor, a condenser 1, a throttling device, an evaporator 2, an air volume adjustment plate 4, a stepping motor 7 and a controller 5.

[0036] Specifically, the refrigerant circulates in a refrigerant circuit in the order of a compressor, a condenser 1, a throttling device, and an evaporator 2 in a refrigeration cycle. The evaporator 2 and the condenser 1 are spaced apart to define an air flow passage 3 between the evaporator 2 and the condenser 1. An air volume adjustment plate 4 is rotatably disposed at the entrance of the air flow passage 3. The opening of the air volume adjustment plate 4 is adjustable to adjust the size of the entrance of the air flow passage. A stepper motor 7 is connected to the air volume adjustment plate 4 for adjusting the opening of the air volume adjustment plate 4.

[0037] For example, in Figures 1-8 In the example, the dehumidifier 100 also includes a housing 10, in which the evaporator 2, the condenser 1, the throttling device and the compressor are all arranged. The housing 10 has an air inlet and an air outlet 10, the evaporator 2 is opposite to the air inlet, and the condenser 1 is located on the side of the evaporator 2 away from the air inlet. The stepper motor 7 can be arranged at one end of the air volume adjustment plate 4 in the longitudinal direction, and the output shaft of the stepper motor 7 is connected to the air volume adjustment plate 4. When the stepper motor 7 rotates, it drives the air volume adjustment plate 4 to rotate. Among them, the evaporator 2 is used to absorb heat from the low-temperature and low-pressure refrigerant liquid flowing out of the throttling device into a low-temperature and low-pressure refrigerant gas, and dehumidify and cool the indoor air passing through the evaporator 2. The condenser 1 is used to cool and reduce the pressure of the high-temperature and high-pressure refrigerant gas discharged from the compressor into a medium-temperature and medium-pressure refrigerant liquid.

[0038] like Figure 9 and Figure 10 As shown, the controller 5 is configured to:

[0039] S1. Determine the current operating frequency f_t of the compressor;

[0040] S2. Determine whether the current operating frequency f_t falls within the first frequency range;

[0041] S3. If the current operating frequency f_t falls within the first frequency interval [fmin, f1), the air volume adjustment plate 4 is controlled to close the inlet of the air flow channel 3;

[0042] S4. If the current operating frequency f_t does not fall within the first frequency interval, determine whether the current operating frequency f_t falls within a second frequency interval [f1, f2), where the frequency in the second frequency interval is higher than the frequency in the first frequency interval;

[0043] S5. If the current operating frequency f_t falls within the second frequency range, the air volume adjustment plate 4 is controlled to open to a corresponding angle according to the current operating frequency f_t;

[0044] S6. If the current operating frequency f_t does not fall within the second frequency interval, determine whether the current operating frequency f_t falls within a third frequency interval [f2, fmax], where the frequency within the third frequency interval is higher than the frequency within the second frequency interval;

[0045] S7. If the current operating frequency f_t falls within the third frequency range, the air volume adjustment plate 4 is controlled to be fully opened.

[0046] Combine Figure 3 、 Figure 9 and Figure 10 The controller 5 may include a storage module 51 and a processing module 52. The storage module 51 is communicatively connected to the processing module 52. The storage module 51 is used to store the opening angles of the air volume adjustment plate 4 corresponding to different operating frequencies of the compressor. The processing module 52 is used to obtain the operating frequency of the compressor in real time and retrieve the opening angles of the air volume adjustment plate 4 corresponding to the operating frequency of the compressor from the storage module 5181 to control the opening of the air volume adjustment plate 4 to the corresponding angle. Since the evaporator 2 and the condenser 1 jointly define the air flow channel 3, when the air volume adjustment plate 4 is opened, part of the air flowing into the housing 10 through the air inlet flows through the evaporator 2 to the condenser 1, and the other part flows directly to the condenser 1 through the inlet of the air flow channel 3. Therefore, the air volume flowing to the evaporator 2 is adjusted by the opening angle of the air volume adjustment plate 4, while at the same time ensuring that the air volume flowing to the condenser 1 is the maximum air volume, thereby improving the dehumidification capacity of the dehumidifier 100.

[0047] Specifically, refer to Figure 9 and Figure 10When the judgment result of step S2 is yes, it indicates that the compressor is in a low-frequency operation state, and the air volume adjustment plate 4 is controlled to close the entrance of the air flow channel 3. At this time, the air flowing to the shell 10 through the air inlet flows to the condenser 1 through the evaporator 2, preventing the air in the shell 10 from flowing to the condenser 1 through the air flow channel 3, thereby increasing the ventilation volume of the evaporator 2 and improving the heat exchange efficiency of the evaporator 2, thereby increasing the suction temperature of the compressor, which is beneficial to improving the oil return effect of the compressor. If the judgment result of step S4 is yes, it indicates that the compressor is in the medium frequency operating state. By opening the air volume adjustment plate 4 to a corresponding angle according to the current operating frequency of the compressor, part of the air flowing into the housing 10 through the air inlet flows through the evaporator 2 to the condenser 1, and the other part of the air flows directly to the condenser 1 through the air flow channel 3, thereby reducing the ventilation volume of the evaporator 2, ensuring that the ventilation volume of the evaporator 2 is balanced with the coil temperature of the evaporator 2, while ensuring that the ventilation volume of the condenser 1 is maximized, thereby ensuring that the dehumidifier 100 can operate with the best dehumidification effect, that is, the dehumidifier 100 can achieve the best energy efficiency ratio. If the judgment result of step S6 is yes, it indicates that the compressor is in the high frequency operating state. The air volume adjustment plate 4 is controlled to be fully opened, at this time, the ventilation volume of the evaporator 2 is minimized, and the air volume in the air flow channel 3 is maximized, thereby reducing the exhaust temperature of the compressor, improving the overload operating condition of the compressor, and thus ensuring the service life of the compressor.

[0048] According to the dehumidifier 100 of the embodiment of the present invention, a swingable air volume adjustment plate 4 is provided at the inlet of the air flow channel 3 defined by the evaporator 2 and the condenser 1, and the controller 5 is configured to determine the opening angle of the air volume adjustment plate 4 according to the current operating frequency of the compressor. As a result, compared with conventional dehumidifiers, when the compressor operates at a low frequency, the suction temperature of the compressor can be increased, which helps improve the oil return effect of the compressor. When the compressor operates at a medium frequency, the ventilation volume of the evaporator 2 is the optimal ventilation volume. While increasing the dehumidification capacity of the dehumidifier 100, the dehumidifier 100 can achieve the best energy efficiency ratio. When the compressor operates at a high frequency, the overload condition of the compressor can be improved, thereby ensuring the service life of the compressor.

[0049] According to some embodiments of the present invention, the dehumidifier 100 further includes a fan 6 , which is configured to draw in indoor air and flow it through the evaporator 2 and the condenser 1 in sequence.

[0050] like Figure 9 and Figure 10 As shown, the controller 5 is further configured to:

[0051] If the current operating frequency f_t falls within the second frequency range,

[0052] S51, determining whether the current speed of the fan 6 is a high wind speed;

[0053] S52: If the current speed of the fan 6 is high, the air volume adjustment plate 4 is opened to a corresponding angle according to the current operating frequency f_t and the high wind speed;

[0054] S53: If the current speed of the fan 6 is not a high speed, determine whether the current speed of the fan 6 is a medium speed;

[0055] S54: If the current speed of the fan 6 is medium, the air volume adjustment plate 4 is opened to a corresponding angle according to the current operating frequency f_t and the medium speed.

[0056] S55: If the current speed of the fan 6 is not a medium speed, determine whether the current speed of the fan 6 is a low speed;

[0057] S56: If the current rotation speed of the fan 6 is low wind speed, the air volume adjustment plate 4 is controlled to open to a corresponding angle according to the current operating frequency f_t and the low wind speed.

[0058] When the fan 6 runs at different speeds, the amount of air sucked into the shell 10 through the air inlet is also different. Therefore, through the above steps S51-S5', the speed of the fan 6 can be linked to the opening angle of the air volume adjustment plate 46, so that the fan 6 can ensure that the amount of air flowing to the evaporator 2 is the optimal air volume at different speeds, which can improve the accuracy of the air volume prediction, thereby further improving the dehumidification efficiency of the dehumidifier 100.

[0059] According to some embodiments of the present invention, Figure 9 and Figure 10 As shown, the controller 5 is further configured to:

[0060] If the current operating frequency f_t falls within the second frequency range,

[0061] According to the current operating frequency f_t, the angle of the air volume adjustment plate 4 corresponding to the current operating frequency f_t is determined to be X degrees;

[0062] Control the stepper motor 7 to drive the air volume adjustment plate 4 to rotate to X degrees.

[0063] For example, the input signal to stepper motor 7 can be the current value corresponding to the opening angle of air volume control plate 4 at different operating frequency ranges of the compressor. In other words, when a certain current value is input to stepper motor 7, stepper motor 7 can drive air volume control plate 4 to open, and the opening angle of air volume control plate 4 is the opening angle of air volume control plate 4 corresponding to the frequency range of the compressor at that time. This can quickly open the entrance of air flow channel 3, increase the amount of air flowing into air flow channel 3, and ensure the dehumidification effect of dehumidifier 100.

[0064] According to some embodiments of the present invention, Figure 9 and Figure 10 As shown, the controller 5 is further configured to:

[0065] Before determining the current operating frequency f_t of the compressor,

[0066] S0, determining whether the compressor has been running continuously for a first period of time;

[0067] If the judgment result is yes, the step of determining the current operating frequency f_t of the compressor;

[0068] If the determination result is no, then continue to determine whether the compressor has been running continuously for the first time period.

[0069] That is, after the compressor has been running continuously for the first period of time, the operating frequency of the compressor is relatively stable, and the value of the operating frequency of the compressor detected at this time is relatively accurate.

[0070] Further, refer to Figure 9 and Figure 10 , the controller 5 is further configured to:

[0071] S8, determining whether the dehumidifier 100 has entered the defrost mode;

[0072] S9. If the dehumidifier 100 enters the defrost mode, the air volume adjustment plate 4 is controlled to close the inlet of the air flow channel 3;

[0073] If the dehumidifier 100 does not enter the defrost mode, the process returns to the step of determining whether the compressor has been running continuously for the first time period.

[0074] Through steps S8-S9, the coupling control of the dehumidification mode and the defrost mode of the dehumidifier 100 can be achieved, so that the air volume flowing to the evaporator 2 of the dehumidifier 100 in the defrost mode is maximized. While increasing the dehumidification capacity of the dehumidifier 100, the defrost time can be shortened and the reliability of the defrost mode can be improved.

[0075] Furthermore, if Figure 9 and Figure 10 As shown, the controller 5 is further configured to:

[0076] After determining whether the dehumidifier 100 has entered the defrost mode,

[0077] S10, determining whether the dehumidifier 100 has exited the defrost mode;

[0078] S11, if the dehumidifier 100 exits the defrost mode, determining whether the dehumidifier 100 enters the shutdown mode;

[0079] S12: If the dehumidifier 100 enters shutdown mode, the air volume adjustment plate 4 is controlled to close the entrance of the air flow channel 3. At this point, the dehumidifier 100 has completed defrosting. Closing the entrance of the air flow channel 3 prepares the dehumidifier 100 for the next time it is turned on. This allows the air volume adjustment plate 4 to open to the corresponding angle according to the operating frequency range of the compressor, avoiding a discrepancy between the actual opening angle of the air volume adjustment plate 4 and the expected opening angle. In other words, the dehumidification capacity of the dehumidifier 100 is guaranteed when it is turned on again.

[0080] If the dehumidifier 100 has not entered the shutdown mode, the process returns to the step of determining whether the compressor has been running continuously for the first time period;

[0081] If the dehumidifier 100 has not exited the defrost mode, the process returns to the step of determining whether the compressor has been running continuously for the first time period.

[0082] When the dehumidifier 100 has not entered the shutdown mode or has not exited the defrost mode, it indicates that the detected operating frequency of the compressor may be inaccurate or the shutdown button has not been successfully triggered. It is necessary to re-detect the operating frequency of the compressor after the first continuous operation period in order to accurately judge the operating status of the dehumidifier 100, ensure that the dehumidifier 100 can be operated correctly, and avoid damage to the dehumidifier 100.

[0083] According to some embodiments of the present invention, a first windshield 8 is provided between the evaporator 2 and the condenser 1 on both sides. The two first windshields 8, the evaporator 2 and the condenser 1 together define an air flow channel 3. The air volume adjustment plate 4 is located on the top of the evaporator 2 and the condenser 1. Figure 5-Figure 8 As shown, the top of the air flow channel 3 is the entrance, and one end of the two first wind shields 8 is respectively connected to the two ends of the length direction of the air volume adjustment plate 4, and the other ends of the two first wind shields 8 can be connected to the end plate of the evaporator 2 or the condenser 1 by snaps or screws to ensure the installation reliability of the two first wind shields 8.

[0084] The length of the air volume regulating plate 4 should be greater than the distance between the two end plates of the evaporator 2 or condenser 1, the width of the air volume regulating plate 4 should be equal to the distance between the condenser 1 and the evaporator 2, and the thickness of the air volume regulating plate 4 must meet the drop strength requirements of the product. The height of the first windshield 8 should be higher than the height of the condenser 1 and the evaporator 2, the width of the second windshield should be equal to the distance between the condenser 1 and the evaporator 2, and the thickness of the first windshield 8 must meet the drop strength requirements of the product. Optionally, the gap between the first windshield 8 and the evaporator 2 or condenser 1 can be sealed with sponge or other materials to prevent air leakage that affects the accuracy of air volume control.

[0085] Of course, the present invention is not limited to this. According to other embodiments of the present invention, a second windshield is provided between the top of the evaporator 2 and the condenser 1. The second windshield, the evaporator 2, and the condenser 1 collectively define an air flow channel 3. Multiple air volume adjustment plates 4 are provided, one each between the evaporator 2 and the condenser 1. Specifically, two air volume adjustment plates 4 are provided, each swingably disposed between the sides of the condenser 1 and the evaporator 2. The second windshield is provided between the top of the condenser 1 and the evaporator 2. When the dehumidifier 100 is dehumidifying, the controller 5 can adjust the opening of the inlet by controlling the opening angle of at least one of the two air volume adjustment plates 4. In this case, a portion of the indoor air flowing into the dehumidifier 100 through the air inlet flows from the side of the condenser 1 to the auxiliary condenser 9. Optionally, the gap between the second windshield and the evaporator 2 or condenser 1 can be sealed with sponge or other materials to prevent air leakage that could affect the accuracy of air volume control.

[0086] According to some embodiments of the present invention, the dehumidifier 100 further includes an auxiliary condenser 9, which is provided in the air flow channel 3 and is used to recycle the air flowing through the evaporator 2 and perform heat exchange on the indoor diverted air entering from the inlet of the air flow channel 3 to achieve dehumidification of the indoor diverted air. Figure 3-Figure 6 The auxiliary condenser 9 is located in the cavity between the evaporator 2 and the condenser 1. Part of the air flowing into the shell 10 through the air inlet flows to the auxiliary condenser 9 through the evaporator 2. The auxiliary condenser 9 reuses the air flowing through the evaporator 2. The other part flows directly to the auxiliary condenser 9 through the inlet of the air flow channel 3, and performs heat exchange on the air in the air flow channel 3. The auxiliary condenser 9 can effectively remove part of the moisture in the air. Finally, all the air is heated by the condenser 1 and flows out from the air outlet 10. The condenser 1 can further remove moisture in the air, thereby increasing the dehumidification capacity of the dehumidifier 100 and improving the dehumidification efficiency of the dehumidifier 100.

[0087] Furthermore, the auxiliary condenser 9 includes a frame and a plurality of condensation sheets, the plurality of condensation sheets are arranged in the frame, the plurality of condensation sheets are arranged at intervals along the thickness direction of the condensation sheet, each condensation sheet is formed with a plurality of through holes 91 arranged at intervals along the length direction of the condensation sheet, the edge of each through hole 91 is provided with an extension portion extending toward one side in the thickness direction of the condensation sheet, the plurality of extension portions of the plurality of condensation sheets are respectively opposite to each other along the thickness direction of the condensation sheet to respectively form a plurality of channels, the plurality of channels are connected to the inlet of the air flow channel 3, the indoor air flowing through the evaporator 2 flows through the plurality of condensation sheets to exchange heat with the indoor diverted air in the plurality of channels.

[0088] For example, when the air volume adjustment plate 4 is located at the top of the air flow channel 3, multiple condensation sheets can be arranged at intervals along the width of the frame, with two adjacent condensation sheets jointly defining a channel. In this case, each condensation sheet is arranged horizontally, meaning its length is aligned with the length of the frame, and each channel extends horizontally. When the air volume adjustment plate 4 is located to the side of the air flow channel 3, multiple condensation sheets can be arranged at intervals along the length of the frame. In this case, each condensation sheet is arranged vertically, meaning its length is aligned with the width of the frame, and each channel extends vertically. Thus, when the air volume adjustment plate 4 is open, air can flow into the channel, exchange heat with the condensation sheets, and remove moisture from the air.

[0089] Reference Figure 9 According to the embodiment of the present invention, the specific process of the dehumidifier controller is as follows:

[0090] S0. After the dehumidifier 100 is running, determine whether the compressor has been running continuously for a first time period. If the determination result of step S0 is yes, execute step S1. If the determination result of step S0 is no, repeat step S0.

[0091] S1. After determining the current operating frequency f_t of the compressor, execute step S2;

[0092] S2. Determine whether the current operating frequency f_t falls within the first frequency range;

[0093] S3. If the current operating frequency f_t falls within the first frequency interval [fmin, f1), the air volume adjustment plate 4 is controlled to close the inlet of the air flow channel 3;

[0094] S4. If the current operating frequency f_t does not fall within the first frequency interval, determine whether the current operating frequency f_t falls within a second frequency interval [f1, f2), where the frequency in the second frequency interval is higher than the frequency in the first frequency interval;

[0095] S5. If the current operating frequency f_t falls within the second frequency range, the air volume adjustment plate 4 is controlled to open to a corresponding angle according to the current operating frequency f_t;

[0096] S6. If the current operating frequency f_t does not fall within the second frequency interval, determine whether the current operating frequency f_t falls within a third frequency interval [f2, fmax], where the frequency within the third frequency interval is higher than the frequency within the second frequency interval;

[0097] S7. If the current operating frequency f_t falls within the third frequency range, the air volume adjustment plate 4 is controlled to be fully opened.

[0098] S8, determining whether the dehumidifier 100 has entered the defrost mode;

[0099] S9. If the dehumidifier 100 enters the defrost mode, the air volume regulating plate 4 is controlled to close the inlet of the air flow channel 3. If the dehumidifier 100 does not enter the defrost mode, the process returns to step S1.

[0100] S10, determining whether the dehumidifier 100 has exited the defrost mode;

[0101] S11. If the dehumidifier 100 exits the defrost mode, determine whether the dehumidifier 100 enters the shutdown mode. If the dehumidifier 100 does not exit the defrost mode, return to step S1.

[0102] S12. If the dehumidifier 100 enters the shutdown mode, the air volume adjustment plate 4 is controlled to close the inlet of the air flow channel 3. If the dehumidifier 100 does not enter the shutdown mode, the process returns to step S1.

[0103] Reference Figure 10 According to another embodiment of the present invention, the specific process of the dehumidifier controller is as follows:

[0104] S0. After the dehumidifier 100 is running, determine whether the compressor has been running continuously for a first time period. If the determination result of step S0 is yes, execute step S1. If the determination result of step S0 is no, repeat step S0.

[0105] S1. After determining the current operating frequency f_t of the compressor, execute step S2;

[0106] S2. Determine whether the current operating frequency f_t falls within the first frequency range;

[0107] S3. If the current operating frequency f_t falls within the first frequency interval [fmin, f1), the air volume adjustment plate 4 is controlled to close the inlet of the air flow channel 3;

[0108] S4. If the current operating frequency f_t does not fall within the first frequency interval, determine whether the current operating frequency f_t falls within a second frequency interval [f1, f2), where the frequency in the second frequency interval is higher than the frequency in the first frequency interval;

[0109] S5. If the current operating frequency f_t falls within the second frequency range;

[0110] S51, determining whether the current speed of the fan 6 is a high wind speed;

[0111] S52: If the current speed of the fan 6 is high, the air volume adjustment plate 4 is opened to a corresponding angle according to the current operating frequency f_t and the high wind speed;

[0112] S53: If the current speed of the fan 6 is not a high speed, determine whether the current speed of the fan 6 is a medium speed;

[0113] S54: If the current speed of the fan 6 is medium, the air volume adjustment plate 4 is opened to a corresponding angle according to the current operating frequency f_t and the medium speed.

[0114] S55: If the current speed of the fan 6 is not a medium speed, determine whether the current speed of the fan 6 is a low speed;

[0115] S56: If the current rotation speed of the fan 6 is low wind speed, the air volume adjustment plate 4 is controlled to open to a corresponding angle according to the current operating frequency f_t and the low wind speed.

[0116] S6. If the current operating frequency f_t does not fall within the second frequency interval, determine whether the current operating frequency f_t falls within a third frequency interval [f2, fmax], where the frequency within the third frequency interval is higher than the frequency within the second frequency interval;

[0117] S7. If the current operating frequency f_t falls within the third frequency range, the air volume adjustment plate 4 is controlled to be fully opened.

[0118] S8, determining whether the dehumidifier 100 has entered the defrost mode;

[0119] S9. If the dehumidifier 100 enters the defrost mode, the air volume regulating plate 4 is controlled to close the inlet of the air flow channel 3. If the dehumidifier 100 does not enter the defrost mode, the process returns to step S1.

[0120] S10, determining whether the dehumidifier 100 has exited the defrost mode;

[0121] S11. If the dehumidifier 100 exits the defrost mode, determine whether the dehumidifier 100 enters the shutdown mode. If the dehumidifier 100 does not exit the defrost mode, return to step S1.

[0122] S12. If the dehumidifier 100 enters the shutdown mode, the air volume adjustment plate 4 is controlled to close the inlet of the air flow channel 3. If the dehumidifier 100 does not enter the shutdown mode, the process returns to step S1.

[0123] Other structures and operations of the dehumidifier 100 according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0124] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0125] In the description of the present invention, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other via another feature instead of being in direct contact with each other.

[0126] In the description of the present invention, “on”, “above” and “above” a first feature of a second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0127] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0128] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0129] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A dehumidifier, characterized in that: include: The refrigerant circulates in a refrigerant circuit in a refrigeration cycle in the order of a compressor, a condenser, a throttling device and an evaporator, wherein the evaporator and the condenser are arranged at intervals to define an air flow channel between the evaporator and the condenser; An air volume adjustment plate, the air volume adjustment plate is rotatably arranged at the entrance of the air flow channel, and the opening of the air volume adjustment plate is adjustable to adjust the size of the entrance of the air flow channel; A stepper motor, the stepper motor is connected to the air volume adjustment plate and is used to adjust the opening of the air volume adjustment plate; a controller, the controller is configured to: Determining the current operating frequency f_t of the compressor; Determine whether the current operating frequency f_t falls within the first frequency interval; If the current operating frequency f_t falls within the first frequency interval, controlling the air volume adjustment plate to close the inlet of the air flow channel; If the current operating frequency f_t does not fall within the first frequency interval, determining whether the current operating frequency f_t falls within a second frequency interval, the frequency within the second frequency interval being higher than the frequency within the first frequency interval; If the current operating frequency f_t falls within the second frequency range, the air volume adjustment plate is controlled to open to a corresponding angle according to the current operating frequency f_t; If the current operating frequency f_t does not fall within the second frequency interval, determining whether the current operating frequency f_t falls within a third frequency interval, the frequency within the third frequency interval being higher than the frequency within the second frequency interval; If the current operating frequency f_t falls within the third frequency interval, the air volume adjustment plate is controlled to be fully opened.

2. The dehumidifier according to claim 1, characterized in that: Further including: A fan, used for sucking indoor air and passing the indoor air through the evaporator and the condenser in sequence; The controller is further configured to: If the current operating frequency f_t falls within the second frequency range, Determining whether the current rotation speed of the fan is a high wind speed; If the current speed of the fan is a high wind speed, the air volume adjustment plate is controlled to open to a corresponding angle according to the current operating frequency f_t and the high wind speed; If the current speed of the fan is not a high speed, determining whether the current speed of the fan is a medium speed; If the current speed of the fan is a medium wind speed, the air volume adjustment plate is controlled to open to a corresponding angle according to the current operating frequency f_t and the medium wind speed; If the current speed of the fan is not a medium speed, determining whether the current speed of the fan is a low speed; If the current rotation speed of the fan is a low wind speed, the air volume adjustment plate is controlled to open to a corresponding angle according to the current operating frequency f_t and the low wind speed.

3. The dehumidifier according to claim 1, characterized in that: The controller is further configured to: If the current operating frequency f_t falls within the second frequency range, According to the current operating frequency f_t, determining that the angle of the air volume adjustment plate corresponding to the current operating frequency f_t is X degrees; The stepper motor is controlled to drive the air volume adjustment plate to rotate to X degrees.

4. The dehumidifier according to claim 1, characterized in that: The controller is further configured to: Before determining the current operating frequency f_t of the compressor, Determining whether the compressor has been running continuously for a first time period; If the judgment result is yes, the step of determining the current operating frequency f_t of the compressor is performed; If the determination result is no, then continue to determine whether the compressor has been running continuously for the first time period.

5. The dehumidifier according to claim 4, characterized in that: The controller is further configured to: Determining whether the dehumidifier enters a defrosting mode; If the dehumidifier enters the defrosting mode, controlling the air volume adjustment plate to close the inlet of the air flow channel; If the dehumidifier does not enter the defrost mode, the process returns to the step of determining whether the compressor runs continuously for the first time period.

6. The dehumidifier according to claim 5, characterized in that: The controller is further configured to: After determining whether the dehumidifier has entered the defrosting mode, Determining whether the dehumidifier exits the defrosting mode; If the dehumidifier exits the defrosting mode, determining whether the dehumidifier enters the shutdown mode; If the dehumidifier enters the shutdown mode, controlling the air volume adjustment plate to close the inlet of the air flow channel; If the dehumidifier has not entered the shutdown mode, returning to the step of determining whether the compressor has been running continuously for the first time period; If the dehumidifier does not exit the defrost mode, the process returns to the step of determining whether the compressor has been running continuously for the first time period.

7. The dehumidifier according to claim 1, characterized in that: A first windshield is provided between the two sides of the evaporator and the condenser respectively, and the two first windshields, the evaporator and the condenser together define the air flow channel, and the air volume adjustment plate is located on the top of the evaporator and the condenser.

8. The dehumidifier according to claim 1, characterized in that: A second windshield is provided between the tops of the evaporator and the condenser, and the second windshield, the evaporator and the condenser together define the air flow channel; There are a plurality of air volume adjustment plates, and the plurality of air volume adjustment plates are respectively arranged between the two sides of the evaporator and the condenser.

9. The dehumidifier according to any one of claims 1 to 8, characterized in that: Further including: An auxiliary condenser is arranged in the air flow channel and is used for secondary utilization of the air flowing through the evaporator and for performing heat exchange on the indoor diverted air entering from the inlet of the air flow channel to achieve dehumidification of the indoor diverted air.

10. The dehumidifier according to claim 9, characterized in that: The auxiliary condenser comprises: frame; A plurality of condensation sheets are provided in the frame, the plurality of condensation sheets are arranged at intervals along the thickness direction of the condensation sheets, each of the condensation sheets is formed with a plurality of through holes arranged at intervals along the length direction of the condensation sheet, the edge of each through hole is provided with an extension portion extending toward one side in the thickness direction of the condensation sheet, the plurality of extension portions of the plurality of condensation sheets are respectively opposite to each other in the thickness direction of the condensation sheet to respectively form a plurality of channels, the plurality of channels are connected with the inlet of the air flow channel, the indoor air flowing through the evaporator flows through the plurality of condensation sheets to exchange heat with the indoor diverted air in the plurality of channels.

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