CN216203692U - Dry burning prevention control system of evaporative warmer - Google Patents
Dry burning prevention control system of evaporative warmer Download PDFInfo
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- CN216203692U CN216203692U CN202122368011.3U CN202122368011U CN216203692U CN 216203692 U CN216203692 U CN 216203692U CN 202122368011 U CN202122368011 U CN 202122368011U CN 216203692 U CN216203692 U CN 216203692U
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Abstract
The utility model discloses an evaporative warmer dry burning prevention control system, which comprises: the heating pipe is used for heating the accessed water to a boiling point; the temperature controller is connected with the heating tube in series to form a heating power supply loop, is used for detecting the temperature of the heating tube and can be disconnected when the temperature of the heating tube exceeds the boiling point of water; the switch module is connected in series on the heating power supply loop; the zero-crossing detection circuit is electrically connected with the heating power supply loop and sends a waterless signal when the zero-crossing square wave of the heating power supply loop cannot be detected; and the controller is used for receiving the anhydrous signal of the zero-crossing detection circuit and disconnecting the switch module when receiving the anhydrous signal. The utility model can avoid dry burning of the heating tube.
Description
Technical Field
The utility model relates to the technical field of heaters, in particular to an evaporative type heater dry-heating prevention control system.
Background
The evaporative warmer is provided with a water tank and a heating pipe, when the evaporative warmer is used for warming, water in the water tank can be conveyed into the heating pipe, and the heating pipe heats the water to a boiling point, so that water vapor is generated, the room is humidified, and the condition that the room is dry due to warming is avoided.
However, after the water in the water tank is used up, the heating pipe continues to work, so that the heating pipe is dried to generate high temperature, and the evaporative warmer is burnt out and even has a fire.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing an evaporative warmer dry burning prevention control system which can avoid dry burning of a heating pipe.
In order to solve the technical problem, the utility model provides an evaporative warmer dry burning prevention control system, which comprises:
the heating pipe is used for heating the accessed water to a boiling point;
the temperature controller is connected with the heating tube in series to form a heating power supply loop, is used for detecting the temperature of the heating tube and can be disconnected when the temperature of the heating tube exceeds the boiling point of water;
the switch module is connected in series on the heating power supply loop;
the zero-crossing detection circuit is electrically connected with the heating power supply loop and sends a waterless signal when the zero-crossing square wave of the heating power supply loop cannot be detected;
the controller is used for receiving the anhydrous signal of the zero-crossing detection circuit and disconnecting the switch module when receiving the anhydrous signal;
the temperature controller is tightly attached to the outer wall of the heating tube.
Preferably, the switch module is a relay.
Preferably, the switch module is a thyristor.
After adopting the structure, compared with the prior art, the utility model has the following advantages:
after water in the water tank of the evaporative heater is used up, no water exists in the heating tube, the temperature controller is disconnected when the temperature inside the heating tube exceeds 100 degrees, the heating power supply loop is disconnected, the square wave signal cannot be detected by the zero-crossing detection circuit, the zero-crossing detection circuit sends a signal to the controller, the switch module is disconnected by the controller, the heating tube cannot be continuously heated, the condition that the heating tube is continuously heated without water and is dried is avoided, and the condition that the evaporative heater is burnt out or even fires is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a control schematic of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the dry-heating prevention control system of the evaporative warmer of the present invention comprises a heating tube 10, a temperature controller 20, a switch module, a zero-crossing detection circuit and a controller, wherein a water tank is arranged inside the evaporative warmer, and the water tank is connected with the heating tube through a pipeline, so that water in the water tank can be introduced into the heating tube.
The heating pipe is used for heating the accessed water to a boiling point.
The temperature controller is connected with the heating tube in series to form a heating power supply loop, and is used for detecting the temperature of the heating tube and can be disconnected when the temperature of the heating tube exceeds the boiling point of water.
The switch module is connected in series on the heating power supply loop.
Thus, the heating tube, the temperature controller, the switch module and the power supply are sequentially connected in series to form a heating power supply loop.
The detection end of the zero-crossing detection circuit is electrically connected with the heating power supply loop, and the signal output end of the zero-crossing detection circuit is electrically connected with the input end of the controller.
When the heating power supply loop is electrified, the zero-crossing detection circuit can detect a zero-crossing square wave; when the heating power supply circuit is disconnected, the zero-crossing detection circuit cannot detect the zero-crossing square wave, and when the zero-crossing detection circuit cannot detect the zero-crossing square wave of the heating power supply circuit, the zero-crossing detection circuit sends a no-water signal to the controller.
The output end of the controller is electrically connected with the switch module, the controller is used for receiving the anhydrous signal of the zero-crossing detection circuit, and the controller disconnects the switch module when receiving the anhydrous signal.
The temperature controller is tightly attached to the outer wall of the heating tube, so that the temperature of the heating tube is accurately detected by the temperature controller.
The switch module is a relay or silicon controlled switch.
When the evaporative type warmer humidifies, the switch module is closed, the heating tube and the temperature controller are powered on, the heating tube is connected with water, the heating tube heats the water to a boiling point to generate water vapor, after the water is used up, no water exists in the heating tube, the temperature of the heating tube can exceed the boiling point of the water, therefore, when the temperature controller detects that the temperature of the heating tube exceeds the boiling point of the water, the temperature controller is disconnected, the zero-crossing detection circuit cannot detect a zero-crossing square wave at the moment, the zero-crossing detection circuit sends a signal to the controller, and the controller controls the switch module to be disconnected.
Claims (3)
1. An evaporative warmer dry-burning prevention control system is characterized by comprising:
the heating pipe is used for heating the accessed water to a boiling point;
the temperature controller is connected with the heating tube in series to form a heating power supply loop, is used for detecting the temperature of the heating tube and can be disconnected when the temperature of the heating tube exceeds the boiling point of water;
the switch module is connected in series on the heating power supply loop;
the zero-crossing detection circuit is electrically connected with the heating power supply loop and sends a waterless signal when the zero-crossing square wave of the heating power supply loop cannot be detected;
the controller is used for receiving the anhydrous signal of the zero-crossing detection circuit and disconnecting the switch module when receiving the anhydrous signal;
the temperature controller is tightly attached to the outer wall of the heating tube.
2. The evaporative warmer dry burning prevention control system as set forth in claim 1, wherein the switch module is a relay.
3. The evaporative warmer dry burning prevention control system according to claim 1, wherein the switch module is a thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122368011.3U CN216203692U (en) | 2021-09-28 | 2021-09-28 | Dry burning prevention control system of evaporative warmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122368011.3U CN216203692U (en) | 2021-09-28 | 2021-09-28 | Dry burning prevention control system of evaporative warmer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216203692U true CN216203692U (en) | 2022-04-05 |
Family
ID=80927028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122368011.3U Active CN216203692U (en) | 2021-09-28 | 2021-09-28 | Dry burning prevention control system of evaporative warmer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216203692U (en) |
-
2021
- 2021-09-28 CN CN202122368011.3U patent/CN216203692U/en active Active
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