CN206593333U - A kind of drive circuit of dehumidifier - Google Patents
A kind of drive circuit of dehumidifier Download PDFInfo
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- CN206593333U CN206593333U CN201720032714.XU CN201720032714U CN206593333U CN 206593333 U CN206593333 U CN 206593333U CN 201720032714 U CN201720032714 U CN 201720032714U CN 206593333 U CN206593333 U CN 206593333U
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Abstract
The utility model discloses a kind of drive circuit of dehumidifier, including control module, electric power polarity handover module, semiconductor chilling plate, Temperature and Humidity module and power module, the power module is respectively control module and Temperature and Humidity module for power supply, powered simultaneously by electric power polarity handover module for semiconductor chilling plate, the electric power polarity handover module, Temperature and Humidity module is connected with control module respectively, when the cold junction temperature that the Temperature and Humidity module detects semiconductor chilling plate is less than default lower limit, control module control electric power polarity handover module switches the electric power polarity of semiconductor chilling plate, heat the cold end of semiconductor chilling plate；When the cold junction temperature that the Temperature and Humidity module detects semiconductor chilling plate is more than default higher limit, control module control electric power polarity handover module switches the electric power polarity of semiconductor chilling plate, the cold end of semiconductor chilling plate is freezed.The utility model can prevent semiconductor chilling plate cold end from freezing.
Description
Technical field
The utility model belongs to dehumidifier technical field, more particularly to a kind of dehumidifier of use semiconductor chilling plate
Drive circuit.
Background technology
The main function of switch cubicle is generated electricity in power system, transmitted electricity, during distribution and electric energy conversion, is carried out
Folding, control and protection electrical equipment, its in use, residing ambient humidity is generally larger, the vapor in air
The relatively low electrical equipment of temperature is run into, the globule is easily formed, the insulating materials surface of electrical equipment is attached to, insulating materials is reduced
Resistance, and then reduce electrical equipment insulating properties, proximity switch tripping operation set, damage electrical equipment, not only increase inspection
The workload of personnel is repaiied, the safe and reliable operation of system where also affecting electrical equipment, or even cause heavy losses.Therefore,
It is necessary to dehumidify to electrical equipment.
Because the process of refrigerastion of semiconductor chilling plate will not be polluted to environment, and small volume, available for smaller sky
Between, flexible and convenient to use and energy consumption is low, therefore, existing switch cubicle uses greatly semiconductor chilling plate with dehumidifier and is used as dehumidification portion
Part, such as publication：CN 203377489U, still, when the environment temperature in space of dehumidifying is less than 10 DEG C, can cause semiconductor
The cold end of cooling piece freezes, cause dehumidifier can not normal work, existing way is to increase deicer in cold end, is such as heated
Piece, it is so not only complicated, using trouble and add cost.
The content of the invention
The utility model purpose is that one kind is provided to solve the above problems can prevent semiconductor chilling plate cold end knot
Ice, and simple in construction, easy to use, the drive circuit of the low dehumidifier of cost.
Therefore, the utility model discloses a kind of drive circuit of dehumidifier, including control module, electric power polarity switching mould
Block, semiconductor chilling plate, Temperature and Humidity module and power module, the power module are respectively control module and humiture inspection
Module for power supply is surveyed, the power module is powered by electric power polarity handover module for semiconductor chilling plate, and the electric power polarity is cut
Change the mold the first control output end of the control termination control module of block, the output termination control module of the Temperature and Humidity module
Input, when the Temperature and Humidity module detect semiconductor chilling plate cold junction temperature be less than default lower limit when,
Control module control electric power polarity handover module switches the electric power polarity of semiconductor chilling plate, adds the cold end of semiconductor chilling plate
Heat；When the cold junction temperature that the Temperature and Humidity module detects semiconductor chilling plate is more than default higher limit, mould is controlled
Block control electric power polarity handover module switches the electric power polarity of semiconductor chilling plate, the cold end of semiconductor chilling plate is freezed.
Further, in addition to display module, the power module is powered for display module, the display module and control
Module is connected.
Further, the display module is numeral method module.
Further, in addition to fault alarm module, the power module is powered for fault alarm module, the failure report
Alert module is connected with control module.
Further, in addition to fan and first switch module, the power module is fan by first switch module
Power supply, the second control output end of the control termination control module of the first switch module, the fan is used to drive humidity
Air passes through the cold end of semiconductor chilling plate.
Further, in addition to overheat protector switch and second switch module, the power module passes sequentially through second and opens
Close module and overheat protector switch is powered for semiconductor chilling plate, the of the control termination control module of the second switch module
Three control output ends, the overheat protector switch is close to the hot junction of semiconductor chilling plate.
Further, the electric power polarity handover module includes the first push-pull circuit and the second push-pull circuit, the power supply
Module is connected by two inputs of the first push-pull circuit and the second push-pull circuit and semiconductor chilling plate respectively, and described first pushes away
The control end for drawing circuit and the second push-pull circuit is connected with two first control output ends of control module respectively.
Further, first push-pull circuit and the second push-pull circuit are made up of NMOS tube and PMOS.
Further, the control module is by chip microcontroller, the single-chip microcomputer model PIC16F722.
Further, the drive circuit of the dehumidifier is arranged in switch cubicle, and the semiconductor chilling plate is arranged at out
In the dehumidifier for closing cabinet.
Advantageous effects of the present utility model：
The utility model detects the cold junction temperature of semiconductor chilling plate less than default when the Temperature and Humidity module
During lower limit, control module control electric power polarity handover module switches the electric power polarity of semiconductor chilling plate, makes semiconductor refrigerating
The cold end heating of piece；When the cold junction temperature that the Temperature and Humidity module detects semiconductor chilling plate is more than default higher limit
When, control module control electric power polarity handover module switches the electric power polarity of semiconductor chilling plate, makes the cold of semiconductor chilling plate
End refrigeration.It can so prevent semiconductor chilling plate cold end from freezing, cause dehumidifier not work, and without additionally increasing deicing
Device, it is simple in construction, it is easy to use, and cost is low.
Brief description of the drawings
Fig. 1 is the structured flowchart of the utility model embodiment；
Fig. 2 is the circuit theory diagrams of the utility model embodiment.
Embodiment
The utility model is further illustrated in conjunction with the drawings and specific embodiments.
As shown in figure 1, a kind of drive circuit of dehumidifier, including control module 1（It is monolithic in this specific embodiment
Machine）, electric power polarity handover module 2, semiconductor chilling plate 3, Temperature and Humidity module 7 and power module 4, the power module 4
Respectively control module 1 and Temperature and Humidity module 7 is powered, and the power module 4 is partly to lead by electric power polarity handover module 2
Body cooling piece 3 is powered, the first control output end of the control termination control module 1 of the electric power polarity handover module 2, the temperature
The input of the output termination control module 1 of humidity detecting module 7, when the Temperature and Humidity module 7 detects semiconductor system
The cold junction temperature of cold 3 is less than default lower limit（In this specific embodiment, it is set as 2 DEG C, certainly, in other embodiments,
Also it can be set according to actual conditions）When, the control electric power polarity of control module 1 handover module 2 switches semiconductor chilling plate 3
Electric power polarity, heats the cold end of semiconductor chilling plate 3, prevents it from freezing；Partly led when the Temperature and Humidity module 7 is detected
The cold junction temperature of body cooling piece 3 is more than default higher limit（In this specific embodiment, it is set as 5 DEG C, certainly, implements other
In example, it can also be set according to actual conditions）When, the control electric power polarity of control module 1 handover module 2 switches semiconductor refrigerating
The electric power polarity of piece 3, makes the cold end of semiconductor chilling plate 3 freeze, to be dehumidified.
In this specific embodiment, power module 4 includes+5V power supplys and+12V power supplys, control module 1 by single-chip microcomputer U4 and its
Peripheral circuit realization, the model PIC16F722 of the single-chip microcomputer U4, single-chip microcomputer U4 VDD pins（Power end）Connect+5V electricity
Source, specifically refers to Fig. 2.
The electric power polarity handover module 2 includes the first push-pull circuit and the second push-pull circuit, first push-pull circuit
Be made up of with the second push-pull circuit NMOS tube and PMOS, certainly, in other embodiments, first push-pull circuit and
Second push-pull circuit can be made up of NPN triode and PNP triode.Specifically, as shown in Fig. 2 electric power polarity switches mould
Block 2 includes NPN triode Q5 and Q6, PMOS IRF1 and IRF2 and NMOS tube IRF3 and IRF4, NPN triode Q5 base stage
Series resistance R5 meets single-chip microcomputer U4 pin RC0（First control output end）, NPN triode Q5 collector series resistance R2 connects
+ 12V power supplys, NPN triode Q5 grounded emitter, PMOS IRF1 and NMOS tube IRF3 grid connect NPN triode Q5's
Colelctor electrode, PMOS IRF1 source electrode meets+12V power supplys, NMOS tube IRF3 source ground, PMOS IRF1 and NMOS tube IRF3
Drain electrode connect, while connecing semiconductor chilling plate TE1 negative pole, NPN triode Q6 base series resistor R4 meets single-chip microcomputer U4
Pin RC2（Another first control output end）, NPN triode Q6 collector series resistance R3 connects+12V power supplys, the poles of NPN tri-
Pipe Q6 grounded emitter, PMOS IRF2 and NMOS tube IRF4 grid connect NPN triode Q6 colelctor electrode, PMOS IRF2
Source electrode connect+12V power supplys, NMOS tube IRF4 source ground, PMOS IRF2 and NMOS tube IRF3 drain electrode connects, connect simultaneously
Semiconductor chilling plate TE1 positive pole.
Temperature and Humidity module 7 is Temperature Humidity Sensor, and in this specific implementation, Temperature Humidity Sensor 7 is slotting by being plugged on
Seat TEST1 on and with single-chip microcomputer U4 pin RC7（Input）Connection, power end VDD connects+5V power supplys, specifically refers to Fig. 2.
Further, in addition to display module 5, display module 5 is powered by+5V power supplys, and display module 5 and single-chip microcomputer U4 connects
Connect, display module 5 is used to show in humiture, this specific implementation, display module 5 is preferably numeral method module, specific electricity
Road is as shown in Figure 2.
Further, in addition to fault alarm module 6, the fault alarm module 6 is powered by+12V power supplys, the failure
Alarm module 6 is connected with single-chip microcomputer U4.In this specific embodiment, fault alarm module 6 includes NPN triode Q4, relay K3
And alarm（Not shown in figure）, specific connected mode refers to Fig. 2.
Further, in addition to fan 9 and first switch module 8, the power module 4 is by first switch module 8
Fan 9 is powered, and the second control output end of the control termination control module 1 of the first switch module 8, the fan 9 is used for
Humid air is driven to pass through the cold end of semiconductor chilling plate 3.In this specific implementation, first switch module 8 is by model
PHKD13N03LT metal-oxide-semiconductor is realized, specifically refers to Fig. 2.
Further, in addition to overheat protector switch 11 and second switch module 9, the power module 4 passes sequentially through the
Two switch modules 9 and warm protection switch 11 are that semiconductor chilling plate 3 is powered, the control termination control of the second switch module 9
3rd control output end of module 1, the overheat protector switch 11 is close to the hot junction of semiconductor chilling plate 3, physical circuit connection
Fig. 2 is referred to, this loop is preparation loop, when semiconductor chilling plate TE1 is with this loop, is plugged on socket Z1 i.e.
Can, the 3rd control output end shared microcontroller U4 of control module 1 pin RC2, when not using this loop, resistance R12
It is to disconnect, when without deicing, uses this loop to carry out refrigerated dehumidification for the power supply of semiconductor chilling plate 3, now resistance R4 breaks
Open.
When the cold junction temperature that the Temperature Humidity Sensor 7 detects semiconductor chilling plate TE1 is less than 2 DEG C, single-chip microcomputer U4
Pin RC0 output high level, pin RC2 output low level, triode Q5, PMOS IRF1 and NMOS tube IRF4 conducting, three
Pole pipe Q6, PMOS IRF2 and NMOS tube IRF3 disconnect, and semiconductor chilling plate TE1 negative pole connects+12V power supplys, and plus earth makes
Semiconductor chilling plate TE1 cold end heating, prevents from freezing；When the Temperature Humidity Sensor 7 detects semiconductor chilling plate TE1's
When cold junction temperature is more than 5 DEG C, single-chip microcomputer U4 pin RC0 output low levels, pin RC2 output high level, triode Q5, PMOS
Pipe IRF1 and NMOS tube IRF4 disconnects, triode Q6, PMOS IRF2 and NMOS tube IRF3 conductings, semiconductor chilling plate TE1's
Positive pole connects+12V power supplys, and negative pole ground connection makes semiconductor chilling plate TE1 cold end freeze, dehumidified.
The drive circuit of dehumidifier of the present utility model is arranged in switch cubicle, and the semiconductor chilling plate is arranged at switch
In the dehumidifier of cabinet.
Although specifically showing and describing the utility model with reference to preferred embodiment, those skilled in the art should
This is understood, is not departing from the spirit and scope of the present utility model that appended claims are limited, in form and details
On the utility model can be made a variety of changes, be protection domain of the present utility model.
Claims (10)
1. a kind of drive circuit of dehumidifier, including control module, electric power polarity handover module, semiconductor chilling plate, humiture
Detection module and power module, it is characterised in that：The power module is respectively control module and Temperature and Humidity module for power supply,
The power module is powered by electric power polarity handover module for semiconductor chilling plate, the control of the electric power polarity handover module
The first control output end of control module is terminated, the output of the Temperature and Humidity module terminates the input of control module, when
When the cold junction temperature that the Temperature and Humidity module detects semiconductor chilling plate is less than default lower limit, control module control
Electric power polarity handover module switches the electric power polarity of semiconductor chilling plate, heats the cold end of semiconductor chilling plate；When the temperature
When the cold junction temperature that humidity detecting module detects semiconductor chilling plate is more than default higher limit, control module control power supply pole
Property handover module switch semiconductor chilling plate electric power polarity, the cold end of semiconductor chilling plate is freezed.
2. the drive circuit of dehumidifier according to claim 1, it is characterised in that：Also include display module, the power supply
Module is powered for display module, and the display module is connected with control module.
3. the drive circuit of dehumidifier according to claim 2, it is characterised in that：The display module is numeral method
Module.
4. the drive circuit of dehumidifier according to claim 1, it is characterised in that：Also include fault alarm module, it is described
Power module is powered for fault alarm module, and the fault alarm module is connected with control module.
5. the drive circuit of dehumidifier according to claim 1, it is characterised in that：Also include fan and first switch mould
Block, the power module is powered by first switch module for fan, the control termination control module of the first switch module
The second control output end, the fan be used for drive humid air pass through semiconductor chilling plate cold end.
6. the drive circuit of dehumidifier according to claim 1, it is characterised in that：Also include overheat protector switch and second
Switch module, the power module passes sequentially through second switch module and overheat protector switch is powered for semiconductor chilling plate, institute
The 3rd control output end of the control termination control module of second switch module is stated, the overheat protector switch is close to semiconductor system
The hot junction of cold.
7. the drive circuit of dehumidifier according to claim 1, it is characterised in that：The electric power polarity handover module includes
First push-pull circuit and the second push-pull circuit, the power module pass through the first push-pull circuit and the second push-pull circuit and half respectively
The two inputs connection of conductor cooling piece, the control end of first push-pull circuit and the second push-pull circuit respectively with control module
Two first control output ends connection.
8. the drive circuit of dehumidifier according to claim 7, it is characterised in that：First push-pull circuit and second is pushed away
Circuit is drawn to be made up of NMOS tube and PMOS.
9. the drive circuit of dehumidifier according to claim 1, it is characterised in that：The control module is real by single-chip microcomputer
It is existing, the single-chip microcomputer model PIC16F722.
10. according to the drive circuit of any described dehumidifiers of claim 1-9, it is characterised in that：The driving of the dehumidifier
Circuit is arranged in switch cubicle, and the semiconductor chilling plate is arranged in the dehumidifier of switch cubicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720032714.XU CN206593333U (en) | 2017-01-11 | 2017-01-11 | A kind of drive circuit of dehumidifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720032714.XU CN206593333U (en) | 2017-01-11 | 2017-01-11 | A kind of drive circuit of dehumidifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206593333U true CN206593333U (en) | 2017-10-27 |
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ID=60128570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720032714.XU Active CN206593333U (en) | 2017-01-11 | 2017-01-11 | A kind of drive circuit of dehumidifier |
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| Country | Link |
|---|---|
| CN (1) | CN206593333U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112856615A (en) * | 2021-01-07 | 2021-05-28 | 施斌卿 | Anti-icing control method for dehumidifier and dehumidifier |
-
2017
- 2017-01-11 CN CN201720032714.XU patent/CN206593333U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112856615A (en) * | 2021-01-07 | 2021-05-28 | 施斌卿 | Anti-icing control method for dehumidifier and dehumidifier |
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