CN219573199U - Humidification equipment and water shortage detection circuit - Google Patents
Humidification equipment and water shortage detection circuit Download PDFInfo
- Publication number
- CN219573199U CN219573199U CN202321138760.XU CN202321138760U CN219573199U CN 219573199 U CN219573199 U CN 219573199U CN 202321138760 U CN202321138760 U CN 202321138760U CN 219573199 U CN219573199 U CN 219573199U
- Authority
- CN
- China
- Prior art keywords
- electrode
- detection circuit
- control chip
- water
- electrically connected
- 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.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Air Humidification (AREA)
Abstract
The utility model provides a humidifying device and a water shortage detection circuit, wherein a first electrode and a second electrode are arranged in a water tank of the humidifying device, the first electrode and the second electrode are designed into exposed and parallel wires, the exposed wires can sense whether water exists or not, the current of the wires is increased when the water exists, when the water exists in the water tank, the control chip can receive an analog signal generated by a signal detection loop, and then the control chip can continuously control the humidifying device to work, otherwise, the humidifying device can be controlled to stop working, and the problem that an atomizing sheet of the humidifying device is dry-burned can be simply and effectively avoided.
Description
Technical Field
The utility model relates to the field of humidifiers, in particular to humidifying equipment and a water shortage detection circuit.
Background
In the operation process of the humidifying equipment (especially the humidifier), the service life of the atomizing sheet is affected due to dry burning of the atomizing sheet caused by the decrease of the water level in the water tank. In the prior art, in order to reduce the influence of dry combustion method on the service life of an atomization sheet, a touch water detection mode is adopted on a product, and when the water level is lower than a preset value, the humidifier is controlled to stop working, however, the touch water detection mode is high in cost and low in flexibility of selecting a specific IC.
In view of this, the present utility model has been proposed.
Disclosure of Invention
The utility model discloses a humidifying device and a water shortage detection circuit, and aims to solve the problem of low flexibility of a water detection mode of the humidifying device.
A first embodiment of the present utility model provides a water shortage detection circuit including: the device comprises a PCB, a depressurization loop, a signal detection loop, a control chip and a first electrode and a second electrode which are arranged in a water tank of humidifying equipment, wherein the depressurization loop, the signal detection loop and the control chip are arranged on the PCB;
the first electrode and the second electrode are electrically connected with the input end of the signal detection circuit, the output end of the signal detection circuit is electrically connected with the input end of the control chip, the input end of the voltage reduction circuit is used for being connected with a power supply, and the output end of the voltage reduction circuit is electrically connected with the power supply end of the signal detection circuit and the power supply end of the control chip;
the first electrode and the second electrode are configured to enable the signal detection loop to stop providing the analog signal to the control chip when the water quantity is lower than a preset water level.
Preferably, the signal detection circuit includes: first resistor, second resistor, third resistor, triode, and first electric capacity:
the first electrode is electrically connected with the C electrode of the triode through the first resistor, the second electrode is electrically connected with the B electrode of the triode, the second electrode is grounded through the second resistor, the E electrode of the triode is grounded through the third resistor, the E electrode of the triode is electrically connected with the input end of the control chip, the C electrode of the triode is electrically connected with the output end of the buck circuit, and the C electrode of the triode is grounded through the first capacitor.
Preferably, the control chip is of the type HT66F0185.
Preferably, the depressurization circuit includes: the voltage reducing chip comprises a fourth resistor, a second capacitor, a third capacitor and a voltage reducing chip;
the power supply is electrically connected with the input end of the voltage reduction chip through the fourth resistor, the input end of the voltage reduction chip is grounded through the first capacitor, and the output end of the voltage reduction chip is grounded through the third capacitor.
Preferably, the first electrode and the second electrode are further configured to enable the signal detection circuit to provide an analog signal to the control chip when the amount of water is above a preset water level.
The second embodiment of the utility model provides a humidifying device, which comprises a power supply, a water tank and a water shortage detection circuit, wherein the power supply is electrically connected with a power supply end of the signal detection loop and a power supply end of a control chip, and the first electrode and the second electrode are arranged inside the water tank.
According to the humidifying equipment and the water shortage detection circuit, the first electrode and the second electrode are arranged in the water tank of the humidifying equipment, wherein the first electrode and the second electrode are designed into the exposed and parallel wires, the exposed wires can sense whether water exists or not, the current of the wires is increased when the water exists, when the water exists in the water tank sufficiently, the control chip can receive an analog signal generated by the signal detection loop, and then the control chip can continuously control the humidifying equipment to work, otherwise, the humidifying equipment can be controlled to stop working, and the problem that an atomizing sheet of the humidifying equipment is dry-burned can be simply and effectively avoided.
Drawings
Fig. 1 is a schematic diagram of a water shortage detection circuit according to a first embodiment of the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
The utility model discloses a humidifying device and a water shortage detection circuit, and aims to solve the problem of low flexibility of a water detection mode of the humidifying device.
Referring to fig. 1, a first embodiment of the present utility model provides a water shortage detection circuit, comprising: the device comprises a PCB, a depressurization loop 1, a signal detection loop 2, a control chip U2 and a first electrode and a second electrode which are arranged in a water tank of humidifying equipment, wherein the depressurization loop 1, the signal detection loop 2 and the control chip U2 are arranged on the PCB;
the first electrode and the second electrode are electrically connected with the input end of the signal detection loop 2, the output end of the signal detection loop 2 is electrically connected with the input end of the control chip U2, the input end of the step-down loop 1 is used for connecting a power supply, and the output end of the step-down loop 1 is electrically connected with the power supply end of the signal detection loop 2 and the power supply end of the control chip U2;
wherein the first electrode and the second electrode are configured to enable the signal detection circuit 2 to stop providing the analog signal to the control chip U2 when the water quantity is lower than a preset water level;
the first and second electrodes are further configured to enable the signal detection circuit 2 to provide an analog signal to the control chip U2 when the amount of water is above a preset water level.
In the prior art, in order to avoid the problem of dry heating of the atomizing sheet of the humidifier, the water level of the water tank is detected by touching the water detection means, and a specific IC needs to be configured to detect the water level of the water tank, however, the configuration of a specific IC causes the problem that the flexibility of the humidifier is low and the equipment is prone to malfunction.
In this embodiment, the first electrode and the second electrode are configured in the water tank of the humidifying device, where the first electrode and the second electrode are designed as exposed and parallel wires, the exposed wires can sense whether there is water or not, and when there is more water, the current of the exposed wires increases, when there is enough water in the water tank, the control chip U2 can receive an analog signal generated by the signal detection circuit 2, and then the control chip U2 can continuously control the atomizing sheet of the humidifying device to continue to work, otherwise, when the water amount in the water tank is lower than a certain value, the current between the first electrode and the second electrode becomes smaller, so that the signal detection circuit 2 cannot continuously provide the analog signal to the control chip U2, and then the control chip U2 controls the atomizing sheet of the humidifying device to stop working, so that the current humidifier has a problem in water detection through a low-cost circuit structure.
In one possible embodiment of the present utility model, the signal detection circuit 2 includes: first resistor R1, second resistor R2, third resistor R3, triode Q1, and first capacitor C1:
the first electrode is electrically connected with the C electrode of the triode Q1 through the first resistor R1, the second electrode is electrically connected with the B electrode of the triode Q1, the second electrode is grounded through the second resistor R2, the E electrode of the triode Q1 is grounded through the third resistor R3, the E electrode of the triode Q1 is electrically connected with the input end of the control chip U2, the C electrode of the triode Q1 is electrically connected with the output end of the buck circuit 1, and the C electrode of the triode Q1 is grounded through the first capacitor C1.
It should be noted that, in this embodiment, the first electrode and the second electrode are designed to be exposed and parallel wires, when enough water is in the water tank at the bottom of the water tank, the larger the current passing through the first electrode and the second electrode is, the larger the current passing through the triode Q1B is, so that the conduction of the triode Q1 is converted into the corresponding change analog signal AD output, the corresponding water level change can be known through the control chip U2 reading the output analog signal AD, the water level alarm effect is achieved, and the dry burning of the atomizing sheet is prevented.
In one possible embodiment of the present utility model, the control chip U2 is of the type HT66F0185.
It should be noted that, in other embodiments, the control chip U2 may be of other types, which are not limited herein, but all the solutions are within the scope of the present utility model.
In one possible embodiment of the present utility model, the depressurization circuit 1 includes: the fourth resistor R4, the second capacitor C2, the third capacitor C3 and the voltage-reducing chip U1;
the power supply is electrically connected with the input end of the buck chip U1 through the fourth resistor R4, the input end of the buck chip U1 is grounded through the first capacitor C1, and the output end of the buck chip U1 is grounded through the third capacitor C3.
It should be noted that, in this embodiment, the buck chip U1 may be capable of converting DC24V input from the adapter into DC5V to supply power to the signal detection circuit 2 and supply power to the control chip U2, where the model of the buck chip U1 may be, but is not limited to, 78L05.
The second embodiment of the present utility model provides a humidifying device, which comprises a power supply, a water tank and a water shortage detection circuit as described in any one of the above, wherein the power supply is electrically connected with a power supply end of the signal detection circuit 2 and a power supply end of the control chip U2, and the first electrode and the second electrode are configured inside the water tank.
According to the humidifying equipment and the water shortage detection circuit, the first electrode and the second electrode are arranged in the water tank of the humidifying equipment, wherein the first electrode and the second electrode are designed into the exposed and parallel wires, the exposed wires can sense whether water exists or not, the current of the wires is increased when the water exists, the signal detection circuit 2 can receive an analog signal when enough water exists in the water tank, the control chip U2 can further control the humidifying equipment to work continuously, otherwise, the humidifying equipment can be controlled to stop working, and the problem that dry burning occurs on an atomizing sheet of the driving equipment can be simply and effectively avoided.
The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model.
Claims (6)
1. A water shortage detection circuit, characterized by comprising: the device comprises a PCB, a depressurization loop, a signal detection loop, a control chip and a first electrode and a second electrode which are arranged in a water tank of humidifying equipment, wherein the depressurization loop, the signal detection loop and the control chip are arranged on the PCB;
the first electrode and the second electrode are electrically connected with the input end of the signal detection circuit, the output end of the signal detection circuit is electrically connected with the input end of the control chip, the input end of the voltage reduction circuit is used for being connected with a power supply, and the output end of the voltage reduction circuit is electrically connected with the power supply end of the signal detection circuit and the power supply end of the control chip;
the first electrode and the second electrode are configured to enable the signal detection loop to stop providing the analog signal to the control chip when the water quantity is lower than a preset water level.
2. A water shortage detection circuit according to claim 1, characterized in that the signal detection circuit comprises: first resistor, second resistor, third resistor, triode, and first electric capacity:
the first electrode is electrically connected with the C electrode of the triode through the first resistor, the second electrode is electrically connected with the B electrode of the triode, the second electrode is grounded through the second resistor, the E electrode of the triode is grounded through the third resistor, the E electrode of the triode is electrically connected with the input end of the control chip, the C electrode of the triode is electrically connected with the output end of the buck circuit, and the C electrode of the triode is grounded through the first capacitor.
3. The water shortage detection circuit according to claim 1, wherein the control chip is of the type HT66F0185.
4. A water shortage detection circuit according to claim 1, characterized in that the step-down circuit comprises: the voltage reducing chip comprises a fourth resistor, a second capacitor, a third capacitor and a voltage reducing chip;
the power supply is electrically connected with the input end of the voltage reduction chip through the fourth resistor, the input end of the voltage reduction chip is grounded through the first capacitor, and the output end of the voltage reduction chip is grounded through the third capacitor.
5. A water shortage detection circuit according to claim 1, characterized in that the first and second electrodes are further configured to enable the signal detection circuit to provide an analog signal to the control chip when the amount of water is above a preset water level.
6. A humidifying apparatus comprising a power source, a water tank, and a water shortage detection circuit according to any one of claims 1 to 5, wherein the power source is electrically connected to a power source end of the signal detection circuit, a power source end of a control chip, and the first electrode and the second electrode are disposed inside the water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321138760.XU CN219573199U (en) | 2023-05-12 | 2023-05-12 | Humidification equipment and water shortage detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321138760.XU CN219573199U (en) | 2023-05-12 | 2023-05-12 | Humidification equipment and water shortage detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219573199U true CN219573199U (en) | 2023-08-22 |
Family
ID=87664822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321138760.XU Active CN219573199U (en) | 2023-05-12 | 2023-05-12 | Humidification equipment and water shortage detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219573199U (en) |
-
2023
- 2023-05-12 CN CN202321138760.XU patent/CN219573199U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204693733U (en) | A kind of air purifier and anion output control circuit thereof | |
| CN110086217A (en) | A kind of circuit improving LDO transient response | |
| CN219573199U (en) | Humidification equipment and water shortage detection circuit | |
| CN209329672U (en) | A kind of current protecting circuit for high-pressure system | |
| CN201401957Y (en) | Heat pump water heater control device compatible with electric heating function | |
| CN205160107U (en) | Control circuit of adapter | |
| CN201113813Y (en) | Power supply converter | |
| CN103902009A (en) | Discharge circuit | |
| CN209267179U (en) | A kind of electric power controller controlled by audio signal | |
| CN204462339U (en) | A kind of electric quantity detecting circuit and solar water heater control panel | |
| CN105783170A (en) | Self-control humidifier | |
| CN202598773U (en) | Humidity control device. | |
| CN206144834U (en) | Electricity fan control circuit | |
| CN205139833U (en) | Voltage jump detection circuitry , reset circuit and electron device | |
| CN210832398U (en) | Water shortage detection system and atomizer | |
| CN218645734U (en) | Humidifying equipment | |
| CN218902211U (en) | Stationary flow regulated power supply for static oil purifier | |
| CN204041249U (en) | Oil-fired power generating unit control gear | |
| CN202598774U (en) | Dehumidification drying device | |
| CN209525430U (en) | For monitoring the circuit of vehicle battery voltage | |
| CN217084047U (en) | Power supply voltage conditioning circuit of pressure sensor | |
| CN220234259U (en) | Capacitor charging circuit and ammeter | |
| CN204530321U (en) | A kind of anti-dry and cold adhesive tape reel machine | |
| CN214581681U (en) | Oxygen dispersion system with negative oxygen ions | |
| CN202094860U (en) | Energy-saving control switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |