CN112652969A - Miniature intelligent dehumidifying device and control method thereof - Google Patents
Miniature intelligent dehumidifying device and control method thereof Download PDFInfo
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- CN112652969A CN112652969A CN202011546598.6A CN202011546598A CN112652969A CN 112652969 A CN112652969 A CN 112652969A CN 202011546598 A CN202011546598 A CN 202011546598A CN 112652969 A CN112652969 A CN 112652969A
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- semiconductor refrigerating
- refrigerating sheet
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Drying Of Gases (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a miniature intelligent dehumidifying device and a control method thereof, wherein the miniature intelligent dehumidifying device comprises a shell, a convection fan, a semiconductor refrigerating sheet group and a circuit board are arranged in the shell, the semiconductor refrigerating sheet group is divided into two groups, the semiconductor refrigerating sheet group is arranged in the shell in an up-down corresponding manner, each group of semiconductor refrigerating sheet group comprises a semiconductor refrigerating sheet, a heat radiating sheet is arranged on the hot end of each semiconductor refrigerating sheet, a heat radiating fan is embedded in each heat radiating sheet, a condensing sheet is arranged on the cold end of each semiconductor refrigerating sheet, the convection fan blows the condensing sheet oppositely, a water outlet is arranged at the bottom end of the shell, and a water sensor is arranged in the shell, close to the water outlet and; the circuit board is arranged on the inner wall of the shell on one side of the semiconductor refrigerating sheet set. The invention improves the dehumidification effect and the uniformity of humidity regulation and control of the whole space, and ensures that the equipment can operate safely and efficiently.
Description
Technical Field
The invention belongs to the technical field of dehumidification in cabinets, and particularly relates to a miniature intelligent dehumidification device and a control method thereof.
Background
In products such as power switch cabinets, when the humidity is too high, failures such as discharge and corrosion may be caused, and therefore, it is necessary to control the humidity within a reasonable range. Because the space is relatively closed, the humidity of the small environment can be improved by adding a dehumidification system.
The general structure of the existing semiconductor refrigeration dehumidifier is that a radiator and a fan are added on the heating surface of a semiconductor refrigeration sheet to discharge heat, so as to ensure that the semiconductor refrigeration sheet is not burnt due to overheating or has short service life, and a condensation sheet (or not) is added at the cold end to be contacted with air, so that moisture in the air is condensed into water drops. Problems with such dehumidifiers: firstly, the contact position of air in a cabinet body (or a relatively closed space) needing dehumidification and a semiconductor refrigerating surface is passive, and the air diffusion is completely relied on, so that the convection is insufficient, the exchange is insufficient, and the dehumidification effect is not ideal; secondly, the problem that the water outlet is blocked by the dirt of the condensed water and other foreign matters (such as insects) is not considered, so that the safety of the dehumidification equipment and the switch cabinet is influenced.
Disclosure of Invention
The invention aims to provide a miniature intelligent dehumidifying device and a control method thereof, which can improve the dehumidifying effect and the uniformity of humidity regulation and control of the whole space and ensure that equipment can operate safely and efficiently.
The invention provides the following technical scheme:
a miniature intelligent dehumidifying device comprises a shell, wherein a convection fan, a semiconductor refrigerating sheet set and a circuit board are arranged in the shell, two groups of semiconductor refrigerating sheet sets are arranged in the shell in a vertically corresponding mode, each group of semiconductor refrigerating sheet set comprises a semiconductor refrigerating sheet, a radiating fin is arranged on the hot end of each semiconductor refrigerating sheet, a radiating fan is embedded in each radiating fin, a condensing sheet is arranged on the cold end of each semiconductor refrigerating sheet, the convection fan blows the condensing sheet oppositely, a water outlet is formed in the bottom end of the shell, and a water sensor is arranged in the shell at a position close to the water outlet and higher than the water outlet; the circuit board is arranged on the inner wall of the shell on one side of the semiconductor refrigerating sheet group, the circuit board is provided with a control unit, a communication unit and a temperature and humidity sensor, the communication unit, the temperature and humidity sensor and the water immersion sensor are respectively connected with the control unit, and the control unit respectively controls and connects the convection fan, the cooling fan and the semiconductor refrigerating sheet.
Preferably, two sets of semiconductor refrigeration piece group is first semiconductor refrigeration piece group and second semiconductor refrigeration piece group respectively, first semiconductor refrigeration piece group is established second semiconductor refrigeration piece group top, first semiconductor refrigeration piece group the semiconductor refrigeration piece is first semiconductor refrigeration piece, second semiconductor refrigeration piece group the semiconductor refrigeration piece is second semiconductor refrigeration piece, first semiconductor refrigeration piece with second semiconductor refrigeration piece one side sets up the fin is structure as an organic whole, first semiconductor refrigeration piece with the condensation piece that second semiconductor refrigeration piece opposite side set up is structure as an organic whole.
Preferably, the cooling fan includes a first cooling fan and a second cooling fan, the first cooling fan is installed on the cooling fin corresponding to the first semiconductor refrigeration sheet, and the second cooling fan is installed on the cooling fin corresponding to the second semiconductor refrigeration sheet.
Preferably, the control unit is further connected with a human-computer interface, and the human-computer interface comprises a keyboard and a display which are respectively connected with the control unit.
Preferably, relays are arranged between the control unit and the convection fan, between the control unit and the heat dissipation fan, between the control unit and the semiconductor refrigeration sheet in a one-to-one correspondence manner.
A control method of a miniature intelligent dehumidifying device comprises the following steps:
setting a temperature and humidity set value for the control unit through the communication unit;
the control unit judges whether the current temperature and humidity acquired by the temperature and humidity sensor exceeds the setting, and if so, the convection fan is turned on;
if the current temperature and humidity exceeds the set value, one or two groups of cooling fans and semiconductor refrigeration sheets are determined to be turned on according to the deviation value between the measured value of the temperature and humidity sensor and the set value, the convection fan continuously sucks and blows the external air of the dehumidifier to the condensation sheet to reduce the humidity, and when the measured temperature and humidity reaches or is lower than the set value, the semiconductor refrigeration sheets are turned off and the cooling fans are turned off in a delayed mode.
Preferably, when the water level in the shell reaches the position of the water sensor, the water sensor outputs a signal to the control unit, and the control unit gives an alarm prompt and closes the semiconductor refrigerating piece.
Preferably, a deviation value interval is set through the control unit according to the magnitude of the deviation value, the deviation value interval comprises a first deviation value interval and a second deviation value interval, the humidity deviation value in the first deviation value interval is higher than the humidity deviation value in the second deviation value interval, and the humidity deviation value in the second deviation value interval is close to a set value; when the deviation value is within the first deviation value interval, opening two groups of radiating fans and semiconductor refrigerating pieces to work simultaneously; and when the deviation value is within the second deviation value interval, a group of radiating fans and semiconductor refrigerating pieces are turned on to work.
Preferably, when the deviation value is within the second deviation value interval, a group of cooling fans and semiconductor chilling plates are turned on to work, working time of each group is counted, and the working cooling fans and the working semiconductor chilling plates are switched according to duration.
The invention has the beneficial effects that: according to the invention, through adding the fan, active exchange of air is formed on the refrigerating sheet surface, and the dehumidification effect and the uniformity of humidity regulation and control of the whole space are improved; considering the working environment of occasions such as a power switch cabinet and the like, the water outlet can be blocked by foreign matters such as dust or insects when the device runs for a long time, so that the safety of dehumidification equipment and the switch cabinet is influenced, the water immersion sensor is additionally arranged, the water level is prevented from being further increased to overflow, and the damage to the running of a dehumidification object (equipment) is avoided; the control adopts a grouping strategy, simplifies the control, obtains a balance between energy consumption and efficiency, and ensures that the equipment can safely and efficiently run.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the front view internal structure of the present invention;
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic diagram of the control connection concept of the present invention;
FIG. 4 is a schematic diagram of the dehumidification operation of the present invention;
labeled as: 1. a convection fan; 2. a heat sink; 3. a first heat dissipation fan; 4. a housing; 5. mounting screws; 6. a water immersion sensor; 7. a water outlet; 8. a drain pipe; 9. a condensation sheet; 10. a first semiconductor refrigeration chip; 11. a second semiconductor refrigeration chip; 12. a circuit board; 13. a second heat dissipation fan.
Detailed Description
As shown in fig. 1-3, a miniature intelligent dehumidifying device comprises a housing 4, a convection fan 1, semiconductor refrigerating sheet groups and a circuit board 12 are arranged in the housing 4, the semiconductor refrigerating sheet groups are arranged in the housing 4 in two groups and are arranged in the housing 4 in an up-down corresponding manner, each semiconductor refrigerating sheet group comprises a semiconductor refrigerating sheet, a heat radiating sheet is arranged on the hot end of each semiconductor refrigerating sheet, a heat radiating fan is embedded in each heat radiating sheet, a condensing sheet 9 is arranged on the cold end of each semiconductor refrigerating sheet, the convection fan 1 is arranged for the condensing sheet 9, a water outlet 7 is arranged at the bottom end of the housing 4, a water drain pipe 8 is connected below the water outlet 7, and a water immersion sensor 6 is arranged in the housing 4 at; the circuit board 12 is arranged on the inner wall of the shell 4 on one side of the semiconductor refrigerating sheet group, the circuit board 12 is provided with a control unit, a communication unit and a temperature and humidity sensor, the communication unit, the temperature and humidity sensor and the water sensor 6 are respectively connected with the control unit, and the control unit is respectively connected with the convection fan 1, the cooling fan and the semiconductor refrigerating sheet in a control mode.
Specifically, two groups of semiconductor refrigerating sheet groups are respectively a first semiconductor refrigerating sheet group and a second semiconductor refrigerating sheet group, the first semiconductor refrigerating sheet group is arranged above the second semiconductor refrigerating sheet group, the semiconductor refrigerating sheet of the first semiconductor refrigerating sheet group is a first semiconductor refrigerating sheet 10, the semiconductor refrigerating sheet of the second semiconductor refrigerating sheet group is a second semiconductor refrigerating sheet 11, the first semiconductor refrigerating sheet 10 and a radiating fin 2 arranged on one side of the second semiconductor refrigerating sheet 11 are of an integrated structure, and the first semiconductor refrigerating sheet 10 and a condensing sheet 9 arranged on the other side of the second semiconductor refrigerating sheet 11 are of an integrated structure. The heat radiation fan comprises a first heat radiation fan 3 and a second heat radiation fan 13, the first heat radiation fan 3 is arranged on the heat radiation fin 2 corresponding to the first semiconductor refrigeration piece 10, and the second heat radiation fan 13 is arranged on the heat radiation fin 2 corresponding to the second semiconductor refrigeration piece 11.
As shown in fig. 1-3, in the use process of the miniature intelligent dehumidifying device, a radiating fin 2 is attached to the hot end of a semiconductor refrigerating sheet, and the heat dissipation of the semiconductor refrigerating sheet during operation is accelerated by a radiating fan, so that the semiconductor refrigerating sheet is ensured to normally operate; the cold end of the semiconductor refrigeration sheet is attached to the condensation sheet 9, so that the contact area of the cold end and air is increased, and the condensed water is guided to the lower end of the dehumidifier and flows to the water outlet 7; the convection fan 1 is used for exchanging and convecting air, and blows air in the environment to the condensing sheet 9 to form active exchange of air, thereby improving the dehumidification effect. The first semiconductor refrigeration piece 11 and the first cooling fan 3 form a group, the second semiconductor refrigeration piece 10 and the second cooling fan 13 form a group, and only one group or two groups of semiconductor refrigeration pieces work simultaneously during operation according to a control strategy.
The dehumidification process is as follows: the device control unit judges whether the current humidity (acquired from the humidity sensor) exceeds the setting according to the command transmitted by the communication unit or the setting of the man-machine interface, if so, the convection fan 1 is opened, one or two groups of cooling fans and semiconductor refrigerating sheets are determined to be opened according to the difference between the measured value of the humidity sensor and the setting value, the convection fan 1 continuously sucks and blows the external air of the dehumidifier to the condensing sheet 9, water is condensed, the exchange is continuously carried out, the humidity is reduced, and when the humidity reaches the setting value, the semiconductor refrigerating sheets are closed and the cooling fans are closed in a delayed way.
When foreign matters such as dust or insects block up the delivery port and lead to in time discharging away, can produce ponding at the dehumidifier lower extreme, an installation water logging sensor 6 here, lead to the wrong report for avoiding normal flowing water, this sensor mounted position should be higher than delivery port 7 slightly and lean on the inner wall installation, when the water level reachs the sensor position, sensor output signal gives the control unit, the control unit gives the warning suggestion and closes the refrigeration piece, in order to avoid the water level further to increase and spill over, avoid producing harm to the operation of dehumidification object (equipment).
The circuit part mainly comprises a control unit, a temperature and humidity sensor, a human-computer interface (comprising a keyboard and a display), a communication unit, a relay and the like, wherein the control unit is realized by a single chip microcomputer and is responsible for realizing control logic, the human-computer interface is used for parameter setting and data display, the temperature and humidity sensor is used for collecting the field temperature and humidity, the communication unit is used for remotely collecting and controlling the communication interface, the relay is used for controlling the output generated by the logic to switch a refrigerating sheet, a fan and the like, and the water sensor is used for detecting whether water is accumulated or not and is used for detecting the blockage of a water outlet.
A control method of a miniature intelligent dehumidifying device comprises the following steps:
setting a temperature and humidity set value for the control unit through the communication unit;
the control unit judges whether the current temperature and humidity acquired by the temperature and humidity sensor exceeds the setting, and if so, the convection fan is turned on;
if the current temperature and humidity exceeds the set value, one or two groups of cooling fans and semiconductor refrigeration sheets are determined to be turned on according to the deviation value between the measured value of the temperature and humidity sensor and the set value, the convection fan continuously sucks and blows the external air of the dehumidifier to the condensation sheet to reduce the humidity, and when the measured temperature and humidity reaches or is lower than the set value, the semiconductor refrigeration sheets are turned off and the cooling fans are turned off in a delayed mode.
Preferably, when the water level in the shell reaches the position of the water sensor, the water sensor outputs a signal to the control unit, and the control unit gives an alarm prompt and closes the semiconductor refrigerating piece.
As shown in fig. 4, a dehumidification operation process is performed, wherein H1 and H2 are humidity deviation values, H1> H2, when the humidity is far higher than a set value, two groups of operation in the interval > H1 are performed simultaneously, when the humidity is slightly higher than the set value, only one group of operation is performed in the interval > H2, if the operating life balance of two groups of refrigeration sheets is considered, the operating time of each group can be timed, so that one group of operation can be switched flexibly; the time delay T is used for work heat dissipation of the refrigerating sheet, heat at the hot end of the refrigerating sheet cannot be immediately dissipated after the refrigerating sheet is closed, and the fan is closed after the fan continuously works for a period of time and is fully cooled.
Two groups of refrigerating pieces are adopted to obtain a balance between dehumidification speed and energy conservation and consumption reduction, the switching value control is adopted instead of PWM control because the large hysteresis characteristic of refrigeration and dehumidification is not suitable for the application of algorithms such as PID and the like, and the switching value control has the characteristics of simple structure and low cost.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The miniature intelligent dehumidifying device is characterized by comprising a shell, wherein a convection fan, a semiconductor refrigerating sheet set and a circuit board are arranged in the shell, the semiconductor refrigerating sheet set is divided into two groups, the two groups of semiconductor refrigerating sheet sets are correspondingly arranged in the shell up and down, each group of semiconductor refrigerating sheet set comprises a semiconductor refrigerating sheet, a radiating fin is arranged on the hot end of each semiconductor refrigerating sheet, a radiating fan is embedded in the radiating fin, a condensing sheet is arranged on the cold end of each semiconductor refrigerating sheet, the convection fan blows the condensing sheet oppositely, a water outlet is formed in the bottom end of the shell, and a water sensor is arranged in the shell, close to the water outlet and higher than the water outlet; the circuit board is arranged on the inner wall of the shell on one side of the semiconductor refrigerating sheet group, the circuit board is provided with a control unit, a communication unit and a temperature and humidity sensor, the communication unit, the temperature and humidity sensor and the water immersion sensor are respectively connected with the control unit, and the control unit respectively controls and connects the convection fan, the cooling fan and the semiconductor refrigerating sheet.
2. The miniature intelligent dehumidifying device of claim 1, wherein the two semiconductor refrigerating sheet groups are a first semiconductor refrigerating sheet group and a second semiconductor refrigerating sheet group, the first semiconductor refrigerating sheet group is arranged above the second semiconductor refrigerating sheet group, the semiconductor refrigerating sheet of the first semiconductor refrigerating sheet group is a first semiconductor refrigerating sheet, the semiconductor refrigerating sheet of the second semiconductor refrigerating sheet group is a second semiconductor refrigerating sheet, the first semiconductor refrigerating sheet and the heat radiating sheet arranged on one side of the second semiconductor refrigerating sheet are of an integrated structure, and the first semiconductor refrigerating sheet and the condensing sheet arranged on the other side of the second semiconductor refrigerating sheet are of an integrated structure.
3. The miniature intelligent dehumidifying device of claim 2, wherein the heat dissipating fan comprises a first heat dissipating fan and a second heat dissipating fan, the first heat dissipating fan is mounted on the heat dissipating plate corresponding to the first semiconductor cooling plate, and the second heat dissipating fan is mounted on the heat dissipating plate corresponding to the second semiconductor cooling plate.
4. The miniature intelligent dehumidification device according to claim 1, wherein a human-machine interface is further connected to the control unit, and the human-machine interface comprises a keyboard and a display which are respectively connected to the control unit.
5. The miniature intelligent dehumidification device according to claim 1, wherein relays are provided between the control unit and the convection fan, the heat dissipation fan and the semiconductor refrigeration sheet in a one-to-one correspondence manner.
6. The control method of the miniature intelligent dehumidifying device of claim 1, comprising the steps of:
setting a temperature and humidity set value for the control unit through the communication unit;
the control unit judges whether the current temperature and humidity acquired by the temperature and humidity sensor exceeds the setting, and if so, the convection fan is turned on;
if the current temperature and humidity exceeds the set value, one or two groups of cooling fans and semiconductor refrigeration sheets are determined to be turned on according to the deviation value between the measured value of the temperature and humidity sensor and the set value, the convection fan continuously sucks and blows the external air of the dehumidifier to the condensation sheet to reduce the humidity, and when the measured temperature and humidity reaches or is lower than the set value, the semiconductor refrigeration sheets are turned off and the cooling fans are turned off in a delayed mode.
7. The control method of the miniature intelligent dehumidifying device of claim 6, wherein when the water level in the housing reaches the position of the water sensor, the water sensor outputs a signal to the control unit, and the control unit gives an alarm prompt and turns off the semiconductor refrigerating sheet.
8. The method as claimed in claim 6, wherein the deviation value section is set by the control unit according to the deviation value, the deviation value section includes a first deviation value section and a second deviation value section, the deviation value of humidity in the first deviation value section is higher than the deviation value of humidity in the second deviation value section, and the deviation value of humidity in the second deviation value section is close to the set value; when the deviation value is within the first deviation value interval, opening two groups of radiating fans and semiconductor refrigerating pieces to work simultaneously; and when the deviation value is within the second deviation value interval, a group of radiating fans and semiconductor refrigerating pieces are turned on to work.
9. The method as claimed in claim 8, wherein when the deviation value is within the second deviation value range, a set of cooling fan and semiconductor cooling plate is turned on, the working time of each set is measured, and the working cooling fan and semiconductor cooling plate are switched according to the time length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011546598.6A CN112652969A (en) | 2020-12-23 | 2020-12-23 | Miniature intelligent dehumidifying device and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011546598.6A CN112652969A (en) | 2020-12-23 | 2020-12-23 | Miniature intelligent dehumidifying device and control method thereof |
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| CN112652969A true CN112652969A (en) | 2021-04-13 |
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| CN202011546598.6A Pending CN112652969A (en) | 2020-12-23 | 2020-12-23 | Miniature intelligent dehumidifying device and control method thereof |
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Cited By (1)
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Application publication date: 20210413 |
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