CN112696743A - Dehumidifier and control method thereof - Google Patents
Dehumidifier and control method thereof Download PDFInfo
- Publication number
- CN112696743A CN112696743A CN202011511135.6A CN202011511135A CN112696743A CN 112696743 A CN112696743 A CN 112696743A CN 202011511135 A CN202011511135 A CN 202011511135A CN 112696743 A CN112696743 A CN 112696743A
- Authority
- CN
- China
- Prior art keywords
- control device
- dehumidifier
- bypass
- compressor
- evaporator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Drying Of Gases (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a dehumidifier and a control method thereof, wherein the dehumidifier comprises a shell and a control device arranged in the shell, a refrigeration and dehumidification mechanism and an air supply mechanism which are respectively and electrically connected with the control device are arranged in the shell, and the refrigeration and dehumidification mechanism comprises an evaporator, a condenser, a compressor and a bypass mechanism; an exhaust pipe of the compressor is connected with an inlet pipe of the condenser, an air inlet pipe of the compressor is connected with an outlet pipe of the evaporator, and an outlet pipe of the condenser is connected with an inlet pipe of the evaporator; the input end of the bypass mechanism is connected with an exhaust pipe of the compressor, and the output end of the bypass mechanism is connected with an inlet pipe of the evaporator; the evaporator and the condenser are sequentially arranged along the air inlet and outlet direction of the shell; the dehumidifier provided by the invention can be shut down to defrost by suspending the work of the compressor, or the high-temperature and high-pressure gas is conveyed to the evaporator by the bypass mechanism to defrost, so that the wide working condition operation range of the dehumidifier is ensured.
Description
Technical Field
The invention relates to the technical field of dehumidification equipment, in particular to a dehumidifier and a control method thereof.
Background
For an early dehumidifier refrigeration system, when the dehumidifier refrigeration system works in a low-temperature environment, the low-temperature environment means that the ambient temperature is less than or equal to 18 ℃, an evaporator in the dehumidifier refrigeration system is easy to frost, along with the increase of the operation time, a large amount of frost or even ice on the surface of the evaporator can be formed, the output air quantity of the evaporator is reduced, even ventilation cannot be realized, the outlet air temperature is reduced, and the dehumidification effect of the dehumidifier refrigeration system is greatly reduced; in addition, along with the aggravation of the frosting problem, the compressor can output a low-temperature alarm, and the refrigeration system of the dehumidifier can stop working to protect the compressor, namely, the refrigeration system of the dehumidifier can not continuously run in a low-temperature environment for a long time due to the frosting problem.
It is seen that improvements and enhancements to the prior art are needed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a dehumidifier and a control method thereof, wherein the dehumidifier can perform shutdown defrosting or bypass defrosting, so that the dehumidifier can normally operate in a low-temperature and high-humidity environment, and the applicability of the dehumidifier is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a dehumidifier comprises a shell and a control device arranged in the shell, wherein a refrigeration and dehumidification mechanism and an air supply mechanism which are respectively and electrically connected with the control device are arranged in the shell, and the refrigeration and dehumidification mechanism comprises an evaporator, a condenser, a compressor and a bypass mechanism; an exhaust pipe of the compressor is connected with an inlet pipe of the condenser, an air inlet pipe of the compressor is connected with an outlet pipe of the evaporator, and an outlet pipe of the condenser is connected with an inlet pipe of the evaporator; the input end of the bypass mechanism is connected with an exhaust pipe of the compressor, and the output end of the bypass mechanism is connected with an inlet pipe of the evaporator; the evaporator and the condenser are sequentially arranged along the air inlet and outlet direction of the shell.
In the dehumidifier, the bypass mechanism comprises a bypass regulating valve and a bypass on-off valve, an inlet pipe of the bypass regulating valve is connected with an exhaust pipe of the compressor, an outlet pipe of the bypass regulating valve is connected with an inlet pipe of the bypass on-off valve, and an outlet pipe of the bypass on-off valve is connected with an inlet pipe of the evaporator; the bypass adjusting valve and the bypass on-off valve are respectively electrically connected with the control device.
In the dehumidifier, an air filtering device is further arranged in the shell, and the air filtering device is arranged on the air inlet side of the shell.
In the dehumidifier, the air supply mechanism comprises a fan, an air pipe joint and an air supply outlet, the air supply outlet is arranged on the shell, and the fan is connected with the air supply outlet through the air pipe joint; the fan is electrically connected with the control device.
In the dehumidifier, the refrigeration and dehumidification mechanism further comprises a filter, a first check valve, a second check valve, an expansion valve, a high-pressure protector, a low-pressure protector and a pressure controller; the first check valve and the high-pressure protector are arranged on a connecting pipeline of the compressor and the condenser; the filter and the expansion valve are arranged on a connecting pipeline of the evaporator and the condenser; the second check valve, the low-pressure protector and the pressure controller are arranged on a connecting pipeline of the evaporator and the compressor; the first check valve, the second check valve, the expansion valve, the high-pressure protector, the low-pressure protector and the pressure controller are respectively electrically connected with the control device.
In the dehumidifier, the bottom of casing is provided with a plurality of universal wheels, the universal wheel includes self-locking device.
In the dehumidifier, a water receiving tray is further arranged in the shell, and the water receiving tray is arranged below the evaporator and the condenser.
The invention also correspondingly provides a control method of the dehumidifier, which is used for realizing the working control of the dehumidifier; the dehumidifier also comprises a defrosting temperature sensor which is electrically connected with the control device, and the defrosting temperature sensor is used for detecting the surface temperature of the evaporator; the control method comprises the following steps:
a bypass defrosting temperature T1, a bypass defrosting resetting temperature T2, a shutdown defrosting temperature T3, a shutdown defrosting resetting temperature T4, an inlet air set humidity phi 1 and humidity control precision phi 2 are preset in a control device in advance;
the control device acquires the defrosting temperature T0 fed back by the defrosting temperature sensor in real time;
when T0 is less than or equal to T1, the control device controls the bypass on-off valve to be opened;
when T0 is larger than T2, the control device controls the bypass on-off valve to be closed;
when T0 is less than or equal to T3, the control device controls the compressor to be started;
when T0 is greater than T4, the control device controls the compressor to stop working.
In the control method of the dehumidifier, the dehumidifier further comprises an air inlet humidity sensor electrically connected with the control device, and the air inlet humidity sensor is arranged on the air inlet side of the shell; when T0 is not less than T3, the control device further comprises the following steps after controlling the compressor to be started:
the control device acquires the inlet air humidity phi 0 fed back by the progress humidity sensor in real time;
when phi 1-phi 2 is not less than phi 0 and not more than phi 1+ phi 2, the control device controls the compressor to keep the working state unchanged;
when phi 0 is larger than phi 1+ phi 2, the control device controls the compressor to be started;
when phi 0 is less than phi 1-phi 2, the control device controls the compressor to stop.
In the control method of the dehumidifier, the casing is further provided with an operation panel, the air supply mechanism comprises a plurality of fans arranged in the casing and a plurality of air supply outlets arranged on the casing, the fans are in one-to-one correspondence with the air supply outlets, and the fans and the operation panel are respectively electrically connected with the control device, and the control method further comprises the following steps:
the operation panel feeds back the air supply outlet selected by the user to the control device;
and the control device controls the corresponding fan to be opened according to the air supply outlet information fed back by the operation panel.
Has the advantages that:
the invention provides a dehumidifier which comprises a bypass mechanism, wherein when the evaporator has a frosting problem, a control device can control a compressor to stop working so as to realize shutdown defrosting, or the control device can control the bypass mechanism to work so as to realize the delivery of high-temperature and high-pressure gas to the evaporator, thereby realizing the defrosting of the evaporator, enabling the dehumidifier to normally operate in a low-temperature and high-humidity environment, improving the applicability of the dehumidifier, and ensuring the wide working condition operation range of the dehumidifier.
Drawings
FIG. 1 is a schematic view of the internal structure of a dehumidifier according to the present invention;
FIG. 2 is a side view of the internal structure of the dehumidifier provided by the present invention;
FIG. 3 is a top view of the internal structure of the dehumidifier of the present invention;
FIG. 4 is a schematic structural diagram of a refrigeration and dehumidification mechanism provided by the present invention;
FIG. 5 is a logic flow diagram of a control method of a dehumidifier according to the present invention;
FIG. 6 is a logic flow diagram illustrating one embodiment of step S500 of the control method provided by the present invention;
fig. 7 is a logic flow diagram of another embodiment of a control method provided by the present invention.
Description of the main element symbols: the system comprises a shell 1, a control device 2, an evaporator 301, a condenser 302, a compressor 303, a bypass mechanism 304, a bypass adjusting valve 3041, a bypass on-off valve 3042, a filter 305, a first check valve 306, a second check valve 307, an expansion valve 308, a high-pressure protector 309, a low-pressure protector 310, a pressure controller 311, an air supply mechanism 4, a fan 41, an air pipe joint 42, an air supply outlet 43, an air filter 5, a water pan 6, a universal wheel 7, a defrosting temperature sensor 8 and an air inlet humidity sensor 9.
Detailed Description
The invention provides a dehumidifier and a control method thereof, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail below by referring to the attached drawings and embodiments.
In the description of the present invention, it is to be understood that the terms "lower" and the like indicate orientations or positional relationships based on those shown in the drawings, which are merely for convenience of describing the present invention and simplifying the description, and are not to be construed as limiting the present invention; in addition, the terms "mounted," "connected," and the like are to be construed broadly, and those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.
In the working process of the dehumidifier, when the temperature of inlet air of the evaporator 301 is lower, the temperature of the inlet air is reduced to a lower level under the further cooling action of the evaporator 301, in two heat exchange airflows inside the dehumidifier, if the temperature of the inlet air belonging to a high-temperature airflow is reduced to be lower, the temperature of the inlet air can affect a low-temperature airflow, the evaporation temperature of a refrigerant in the evaporator 301 is reduced to be lower than 0 ℃, at the moment, the surface of the evaporator 301 can frost due to the absorption of moisture in the air, and the frost formation can gradually block fins on the surface of the evaporator 301, so that the evaporation temperature and the corresponding evaporation pressure are continuously reduced, if the evaporator 301 does not melt the frost in time, the frost formation on the surface of the evaporator 301 is more and more until the fins of the evaporator 301 are completely blocked by the frost formation, so that ventilation cannot be realized, and the compressor 303 gives an; the compressor 303 is shut down and the dehumidifier cannot work normally, i.e. the dehumidifier cannot continuously operate in a low temperature environment for a long time due to the problem of frosting.
Referring to fig. 1 to 4, the present invention provides a dehumidifier, including a casing 1 and a control device 2 disposed in the casing 1, wherein a refrigeration and dehumidification mechanism and an air supply mechanism 4 are disposed in the casing 1, and the refrigeration and dehumidification mechanism respectively electrically connected to the control device 2, and includes an evaporator 301, a condenser 302, a compressor 303 and a bypass mechanism 304; the exhaust pipe of the compressor 303 is connected with the inlet pipe of the condenser 302, the inlet pipe of the compressor 303 is connected with the outlet pipe of the evaporator 301, and the outlet pipe of the condenser 302 is connected with the inlet pipe of the evaporator 301; the input end of the bypass mechanism 304 is connected with the exhaust pipe of the compressor 303, and the output end of the bypass mechanism 304 is connected with the inlet pipe of the evaporator 301; the evaporator 301 and the condenser 302 are sequentially arranged along the air inlet and outlet direction of the shell 1; in one embodiment, the control device 2 may be a control circuit board including any one of the control chips of the STM32 family.
The dehumidifier disclosed by the application comprises a bypass mechanism 304, when the evaporator 301 has a frosting problem, the control device 2 can control the compressor 303 to stop working to realize shutdown defrosting, or the control device 2 can control the bypass mechanism 304 to work to realize the delivery of high-temperature and high-pressure gas to the evaporator 301, so that the defrosting of the evaporator 301 is realized, the dehumidifier can normally run under the environment of low temperature and high humidity, the applicability of the dehumidifier is improved, and the wide working condition running range of the dehumidifier is ensured.
The exhaust gas of the compressor 303 is high-temperature and high-pressure gas, and the surface temperature of the evaporator 301 can be detected by the defrosting temperature sensor 8 to judge whether defrosting is needed; when the evaporator 301 has a frosting problem, the control device 2 controls the bypass mechanism 304 to start working, the high-temperature and high-pressure gas exhausted by the compressor 303 enters the evaporator 301 and is mixed with the refrigerant fluid with lower evaporation temperature and evaporation pressure in the evaporator 301, so that the evaporation pressure and evaporation temperature of the evaporator 301 can be increased, and the problem of surface frosting of the evaporator 301 is solved; when the problem of frosting cannot be solved by adopting a bypass defrosting mode, the control device 2 controls the compressor 303 to stop working to realize shutdown defrosting, after the compressor 303 is completely shut down, the air supply mechanism 4 continues to operate, at the moment, the compressor 303 does not refrigerate, the evaporator 301 has no cold energy, the air inlet can be prevented from being continuously cooled by the evaporator 301 of the refrigerating system, and the air which is not cooled and has higher air inlet temperature directly exchanges heat with the surface of the evaporator 301 which is already formed in a box, so that the defrosting on the surface of the evaporator 301 is melted; the defrosting problem of the evaporator 301 is solved by combining two defrosting modes of stopping defrosting and bypass defrosting, so that the dehumidifier can be ensured to periodically and automatically defrost, and the dehumidifier can be ensured to stably and reliably run.
In one embodiment, the four corners of the shell are respectively provided with a connecting plate, and the connecting plates are used for realizing the hoisting fixation or the wall hanging fixation of the dehumidifier, so that the use flexibility of the dehumidifier is improved.
Further, referring to fig. 4, the bypass mechanism 304 includes a bypass adjusting valve 3041 and a bypass on-off valve 3042, an inlet pipe of the bypass adjusting valve 3041 is connected to an exhaust pipe of the compressor 303, an outlet pipe of the bypass adjusting valve 3041 is connected to an inlet pipe of the bypass on-off valve 3042, and an outlet pipe of the bypass on-off valve 3042 is connected to an inlet pipe of the evaporator 301; the bypass adjusting valve 3041 and the bypass on-off valve 3042 are respectively electrically connected to the control device 2; the bypass on-off valve 3042 is used to control the on-off of the connection pipeline between the exhaust pipe of the compressor 303 and the inlet pipe of the evaporator 301, and the bypass adjusting valve 3041 is used to control the flow rate of the high-temperature and high-pressure gas input to the evaporator 301 from the compressor 303.
Further, referring to fig. 2 and 3, an air filtering device 5 is further disposed in the casing 1, and the air filtering device 5 is disposed on an air inlet side of the casing 1; the air filtering device 5 is arranged, so that the air input into the shell 1 can be filtered and purified, the cleanness degree of the air near the dehumidifier is improved, and the peculiar smell of the air near the dehumidifier is eliminated; in one embodiment, the air filtration device 5 may be a high efficiency filter filled with activated carbon or a medium efficiency filter filled with activated carbon.
Further, referring to fig. 1 and fig. 3, the air supply mechanism 4 includes a blower 41, an air pipe joint 42 and an air supply outlet 43, the air supply outlet 43 is opened on the housing 1, and the blower 41 is connected to the air supply outlet 43 through the air pipe joint 42; the fan 41 is electrically connected with the control device 2, and the air supply mechanism 4 is used for outputting the heat-exchanged air out of the shell 1; in one embodiment, referring to fig. 1, two air supply mechanisms 4 are uniformly arranged in the casing 1, so that the air supply amount and the air supply efficiency of the dehumidifier can be improved; the fan 41 may be an axial fan or a centrifugal fan; the control device 2 can adjust the output air quantity of the dehumidifier by adjusting the rotating speed of the fan 41.
Further, referring to fig. 4, the refrigeration and dehumidification mechanism further includes a filter 305, a first check valve 306, a second check valve 307, an expansion valve 308, a high-pressure protector 309, a low-pressure protector 310, and a pressure controller 311; the first check valve 306 and the high-pressure protector 309 are disposed on a connection pipeline between the compressor 303 and the condenser 302; the filter 305 and the expansion valve 308 are disposed on a connection pipe between the evaporator 301 and the condenser 302; the second check valve 307, the low pressure protector 310 and the pressure controller 311 are disposed on a connection pipeline between the evaporator 301 and the compressor 303; the first check valve 306, the second check valve 307, the expansion valve 308, the high-pressure protector 309, the low-pressure protector 310, and the pressure controller 311 are electrically connected to the control device 2, respectively.
Further, referring to fig. 1, a plurality of universal wheels 7 are disposed at the bottom of the housing 1, and the universal wheels 7 include a self-locking device; through the universal wheel with the self-locking device, the dehumidifier can be moved and fixed, and the use flexibility of the dehumidifier is improved.
Further, referring to fig. 1, a water pan 6 is further disposed in the casing 1, the water pan 6 is disposed below the evaporator 301 and the condenser 302, and the water pan 6 is used for collecting air condensation water inside the casing 1, so as to prevent the air condensation water from affecting normal operation of electrical components inside the casing 1, avoid a problem of corrosion damage in the casing 1 due to accumulation of the air condensation water in the casing 1, and prolong a service life of the dehumidifier; in one embodiment, the drip tray 6 is bolted to the housing 1.
Referring to fig. 1 and fig. 5 to 7, the present invention further provides a method for controlling a dehumidifier, wherein the method for controlling a dehumidifier is used to implement any one of the above-mentioned operational controls of a dehumidifier; the dehumidifier further comprises a defrosting temperature sensor 8 electrically connected with the control device 2, wherein the defrosting temperature sensor 8 is used for detecting the surface temperature of the evaporator 301; the control method comprises the following steps:
s100, a bypass defrosting temperature T1, a bypass defrosting return temperature T2, a stop defrosting temperature T3, a stop defrosting return temperature T4, an inlet air set humidity phi 1 and humidity control accuracy phi 2 are preset in the control device 2.
S200, the control device 2 acquires the defrosting temperature T0 fed back by the defrosting temperature sensor 8 in real time.
S300, when T0 is not more than T1, the control device 2 controls the bypass on-off valve 3042 to be opened; further, in one embodiment, the control device 2 obtains a pressure value fed back by the pressure controller 311, the control device 2 controls the bypass on-off valve 3042 to open and close according to the pressure value, when the fed back pressure value is smaller than or equal to a minimum pressure value preset in the control device 2, the control device 2 controls the bypass on-off valve 3042 to open, and when the fed back pressure value is greater than a reset pressure value, the control device 2 controls the bypass on-off valve 3042 to close.
And S400, when T0 is larger than T2, the control device 2 controls the bypass on-off valve 3042 to be closed, the compressor 303 stops conveying the high-temperature and high-pressure gas to the evaporator 301, and the bypass defrosting process is finished.
S500, when T0 is not more than T3, the control device 2 controls the compressor 303 to be started, the evaporator 301 cools and dehumidifies the air, the air is heated by the condenser 302 and then is output to the shell 1 through the air supply mechanism 4.
S600, when T0 is larger than T4, the control device 2 controls the compressor 303 to stop working, and the problem of frosting on the surface of the evaporator 301 is solved by using the air which is not cooled and has higher temperature.
Further, referring to fig. 6, the dehumidifier further includes an intake air humidity sensor 9 electrically connected to the control device 2, and the intake air humidity sensor 9 is disposed on the intake side of the casing 1; when T0 is not less than T3, the control device 2 further comprises the following steps after controlling the compressor 303 to be started:
s510, the control device 2 obtains the inlet air humidity phi 0 fed back by the progress humidity sensor in real time;
s520, when phi 1-phi 2 is not less than phi 0 and not more than phi 1+ phi 2, the control device 2 controls the compressor 303 to keep the working state unchanged;
s530, when phi 0 is larger than phi 1 and phi 2, the control device 2 controls the compressor 303 to be started;
s540, when the phi 0 is smaller than the phi 1 to the phi 2, the control device 2 controls the compressor 303 to stop; that is, the control device 2 adjusts the operating state of the compressor 303 according to the intake air humidity fed back by the intake air humidity sensor 9.
Further, referring to fig. 7, an operation panel is further disposed on the housing 1, the air supply mechanism 4 includes a plurality of fans 41 disposed in the housing 1 and a plurality of air supply outlets 43 disposed on the housing 1, the fans 41 correspond to the air supply outlets 43 one by one, the fans 41 and the operation panel are respectively electrically connected to the control device 2, and the control method further includes the steps of:
s710, the operation panel feeds back the air supply outlet 43 selected by the user to the control device 2;
and S720, the control device 2 controls the corresponding fan 41 to be started according to the air supply outlet 43 information fed back by the operation panel.
In one embodiment, referring to fig. 1, a first fan and a second fan are disposed in the casing 1, the casing 1 is provided with a first air supply outlet communicated with the first fan and a second air supply outlet communicated with the second fan, and the first air supply outlet is located above the second air supply outlet; the user can choose to supply air through the first air supply outlet positioned above or choose to supply air through the second air supply outlet positioned below or choose to supply air through the first air supply outlet and the second air supply outlet together according to actual use requirements, so that different air supply experiences are provided for the user.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the protective scope of the present invention.
Claims (10)
1. A dehumidifier comprises a shell and a control device arranged in the shell, and is characterized in that a refrigeration and dehumidification mechanism and an air supply mechanism which are respectively and electrically connected with the control device are arranged in the shell, and the refrigeration and dehumidification mechanism comprises an evaporator, a condenser, a compressor and a bypass mechanism; an exhaust pipe of the compressor is connected with an inlet pipe of the condenser, an air inlet pipe of the compressor is connected with an outlet pipe of the evaporator, and an outlet pipe of the condenser is connected with an inlet pipe of the evaporator; the input end of the bypass mechanism is connected with an exhaust pipe of the compressor, and the output end of the bypass mechanism is connected with an inlet pipe of the evaporator; the evaporator and the condenser are sequentially arranged along the air inlet and outlet direction of the shell.
2. The dehumidifier of claim 1, wherein the bypass mechanism comprises a bypass regulating valve and a bypass on-off valve, an inlet pipe of the bypass regulating valve is connected with an exhaust pipe of the compressor, an outlet pipe of the bypass regulating valve is connected with an inlet pipe of the bypass on-off valve, and an outlet pipe of the bypass on-off valve is connected with an inlet pipe of the evaporator; the bypass adjusting valve and the bypass on-off valve are respectively electrically connected with the control device.
3. The dehumidifier of claim 1 wherein an air filter is further disposed within said housing, said air filter being disposed on an air intake side of said housing.
4. The dehumidifier of claim 1, wherein the air supply mechanism comprises a fan, an air pipe joint and an air supply outlet, the air supply outlet is arranged on the shell, and the fan is connected with the air supply outlet through the air pipe joint; the fan is electrically connected with the control device.
5. The dehumidifier of claim 1, wherein the refrigeration dehumidifying mechanism further comprises a filter, a first check valve, a second check valve, an expansion valve, a high pressure protector, a low pressure protector, and a pressure controller; the first check valve and the high-pressure protector are arranged on a connecting pipeline of the compressor and the condenser; the filter and the expansion valve are arranged on a connecting pipeline of the evaporator and the condenser; the second check valve, the low-pressure protector and the pressure controller are arranged on a connecting pipeline of the evaporator and the compressor; the first check valve, the second check valve, the expansion valve, the high-pressure protector, the low-pressure protector and the pressure controller are respectively electrically connected with the control device.
6. The dehumidifier of claim 1 wherein the bottom of the housing is provided with a plurality of universal wheels, the universal wheels including self-locking means.
7. The dehumidifier of claim 1 wherein a water pan is disposed within the housing, the water pan being disposed below the evaporator and the condenser.
8. A method for controlling a dehumidifier, wherein the method is used for realizing the operation control of the dehumidifier according to any one of claims 1 to 7; the dehumidifier also comprises a defrosting temperature sensor which is electrically connected with the control device, and the defrosting temperature sensor is used for detecting the surface temperature of the evaporator; the control method comprises the following steps:
a bypass defrosting temperature T1, a bypass defrosting resetting temperature T2, a shutdown defrosting temperature T3, a shutdown defrosting resetting temperature T4, an inlet air set humidity phi 1 and humidity control precision phi 2 are preset in a control device in advance;
the control device acquires the defrosting temperature T0 fed back by the defrosting temperature sensor in real time;
when T0 is less than or equal to T1, the control device controls the bypass on-off valve to be opened;
when T0 is larger than T2, the control device controls the bypass on-off valve to be closed;
when T0 is less than or equal to T3, the control device controls the compressor to be started;
when T0 is greater than T4, the control device controls the compressor to stop working.
9. The method as claimed in claim 8, wherein the dehumidifier further comprises an inlet air humidity sensor electrically connected to the control device, the inlet air humidity sensor being disposed on an inlet air side of the casing; when T0 is not less than T3, the control device further comprises the following steps after controlling the compressor to be started:
the control device acquires the inlet air humidity phi 0 fed back by the progress humidity sensor in real time;
when phi 1-phi 2 is not less than phi 0 and not more than phi 1+ phi 2, the control device controls the compressor to keep the working state unchanged;
when phi 0 is larger than phi 1+ phi 2, the control device controls the compressor to be started;
when phi 0 is less than phi 1-phi 2, the control device controls the compressor to stop.
10. The method as claimed in claim 8, wherein the casing is further provided with an operation panel, the air supply mechanism includes a plurality of fans disposed in the casing and a plurality of air supply ports disposed on the casing, the fans correspond to the air supply ports one by one, and the fans and the operation panel are respectively electrically connected to the control device, the method further comprising:
the operation panel feeds back the air supply outlet selected by the user to the control device;
and the control device controls the corresponding fan to be opened according to the air supply outlet information fed back by the operation panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011511135.6A CN112696743A (en) | 2020-12-18 | 2020-12-18 | Dehumidifier and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011511135.6A CN112696743A (en) | 2020-12-18 | 2020-12-18 | Dehumidifier and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112696743A true CN112696743A (en) | 2021-04-23 |
Family
ID=75509134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011511135.6A Pending CN112696743A (en) | 2020-12-18 | 2020-12-18 | Dehumidifier and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112696743A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087675A (en) * | 2021-11-26 | 2022-02-25 | 珠海格力电器股份有限公司 | Dehumidifier and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202562152U (en) * | 2012-04-14 | 2012-11-28 | 广东美的电器股份有限公司 | Defrosting device applied to dehumidifier |
| CN103925673A (en) * | 2013-01-11 | 2014-07-16 | 邯郸美的制冷设备有限公司 | Defrosting control method of air-conditioner |
| CN204963326U (en) * | 2015-08-30 | 2016-01-13 | 湖南华强电气有限公司 | Defrosting structure under on -vehicle air conditioning system mode of heating |
| CN206973766U (en) * | 2017-07-12 | 2018-02-06 | 南京韩威南冷制冷集团有限公司 | A kind of frostless low temperature dehumidification machine of hot-gas bypass |
| CN109579386A (en) * | 2018-11-30 | 2019-04-05 | 西安交通大学 | A kind of refrigerator hot-gas bypass defrosting control system and its control method |
-
2020
- 2020-12-18 CN CN202011511135.6A patent/CN112696743A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202562152U (en) * | 2012-04-14 | 2012-11-28 | 广东美的电器股份有限公司 | Defrosting device applied to dehumidifier |
| CN103925673A (en) * | 2013-01-11 | 2014-07-16 | 邯郸美的制冷设备有限公司 | Defrosting control method of air-conditioner |
| CN204963326U (en) * | 2015-08-30 | 2016-01-13 | 湖南华强电气有限公司 | Defrosting structure under on -vehicle air conditioning system mode of heating |
| CN206973766U (en) * | 2017-07-12 | 2018-02-06 | 南京韩威南冷制冷集团有限公司 | A kind of frostless low temperature dehumidification machine of hot-gas bypass |
| CN109579386A (en) * | 2018-11-30 | 2019-04-05 | 西安交通大学 | A kind of refrigerator hot-gas bypass defrosting control system and its control method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087675A (en) * | 2021-11-26 | 2022-02-25 | 珠海格力电器股份有限公司 | Dehumidifier and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9568206B2 (en) | Method and apparatus for cooling | |
| CN103175356B (en) | For the method and apparatus cooled | |
| US8327656B2 (en) | Method and apparatus for cooling | |
| US20080041077A1 (en) | Method and apparatus for cooling | |
| CN107576004A (en) | Conditioner and its control method | |
| KR101170012B1 (en) | Heat pump style constant temperature humidifier | |
| CN111189245A (en) | Special air conditioning device of frequency conversion constant temperature and humidity granary | |
| CN109539384A (en) | A kind of changeable air quantity fluorine pump energy saving air conditioner and its control method | |
| CN112696743A (en) | Dehumidifier and control method thereof | |
| CN102384555A (en) | Full fresh air heat pump type constant temperature and constant humidity air conditioning system | |
| CN220601671U (en) | Water-cooling integrated water chilling unit with natural cooling function | |
| CN106411153B (en) | A kind of frequency conversion tank and frequency conversion tank dewing-proof method | |
| JP5289395B2 (en) | Direct expansion air conditioner | |
| CN2804692Y (en) | Constant temp and humidity controller | |
| KR100416368B1 (en) | An energysaving thermohygrostat in one device and the method thereof | |
| US6931868B1 (en) | Air conditioning system | |
| US20220163236A1 (en) | Condensate drain system for a furnace | |
| US11668496B2 (en) | Supplemental cooling for an HVAC system | |
| CN106765965B (en) | The control method of shunt water-cooling type thermostatic and humidistatic air conditioning unit | |
| CN113465059B (en) | Evaporative cooling unit and data center | |
| CN211625757U (en) | Special air conditioning device of frequency conversion constant temperature and humidity granary | |
| CN104864619B (en) | Can step-less adjustment suction temperature refrigeration system | |
| CN112097352A (en) | Evaporative cooling unit with frost prevention structure | |
| KR200193266Y1 (en) | Devices for constant temperature and constant humidi ty to builit-in type | |
| JPH07120005A (en) | Air-conditioning apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210423 |