CN219271848U

CN219271848U - Dry heating prevention protection device for water tank and breathing machine

Info

Publication number: CN219271848U
Application number: CN202223600992.0U
Authority: CN
Inventors: 闵征武; 祝荣荣; 赵宇
Original assignee: Resvent Medical Technology Co Ltd
Current assignee: Resvent Medical Technology Co Ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-30
Anticipated expiration: 2032-12-29

Abstract

The utility model provides a dry-heating prevention protection device for a water tank. The dry heating preventing protection device for the water tank comprises: the heating plate, the temperature monitor, the liquid level monitor, the heating controller and the main control chip are respectively and electrically connected with the temperature monitor and the heating controller and used for controlling the temperature monitor and the heating controller to work; the heating controller is also electrically connected with the heating plate and used for adjusting the heating temperature of the heating plate; the liquid level monitor is arranged in the water tank and used for monitoring the water level in the water tank; the temperature monitor is used for monitoring the heating temperature of the heating plate; when the water level in the water tank is lower than the water level threshold or the heating temperature of the heating plate exceeds the temperature threshold, the main control chip controls the heating plate to be closed. According to the utility model, the hard protection switch and the safety circuit are arranged in the heating disc, the heating power of the heating disc is monitored in real time, and the conditions of dry burning of the water tank of the breathing machine and the like are prevented through multiple protection measures, so that the use process of a user is safer.

Description

Dry heating prevention protection device for water tank and breathing machine

Technical Field

The utility model relates to the field of hardware circuits, in particular to a dry-heating prevention protection device for a water tank and a breathing machine.

Background

When the existing breathing machine is used, the humidifying function can be increased in order to improve the use comfort of a user. Under the control of the heating plate, the water tank continuously consumes water in the water tank to increase water vapor in the heating process, and a user needs to increase water quantitatively and regularly to meet the humidification requirement. Almost all existing household ventilators have the heating and humidifying requirements; external humidifier heating, or internal heating plate heating. When the humidifying gas is generated, the liquid level is monitored by a liquid level sensor, and when the liquid level is lower than the sensor, an alarm is generated to prompt water addition. With the increase of the humidification demand, the safety problems caused by heating in the humidification process of the water tank are particularly important and concerned, for example, the safety problems such as dry heating caused by overheat and overheat of the heating plate in the use process are existed.

Disclosure of Invention

The utility model provides a dry-heating prevention protection device for a water tank and a breathing machine, which can prevent the dry-heating of the water tank of the breathing machine and the like through multiple protection measures, so that the use process of a user is safer.

In a first aspect, the present utility model provides a dry-fire prevention protection device for a water tank, the dry-fire prevention protection device for a water tank comprising: the heating device comprises a heating disc, a temperature monitor, a liquid level monitor, a heating controller and a main control chip, wherein the main control chip is respectively and electrically connected with the temperature monitor and the heating controller and used for controlling the temperature monitor and the heating controller to work; the heating controller is also electrically connected with the heating disc and used for adjusting the heating temperature of the heating disc; the liquid level monitor is arranged on the water tank and is used for monitoring the water level in the water tank; the temperature monitor is used for monitoring the heating temperature of the heating plate; when the water level in the water tank is lower than a water level threshold or the heating temperature of the heating plate exceeds a temperature threshold, the main control chip controls the heating plate to be closed.

In a second aspect, the utility model further provides a water tank dry-burning prevention protection device, and the breathing machine comprises a breathing machine body and the water tank dry-burning prevention protection device arranged on the breathing machine body.

In the application, the hard protection switch is added in the heating plate, and the protection circuit is added in the heating plate and the power supply. The hard protection switch can be turned off when the main control chip controls the heating disc to stop heating and fail and the temperature of the heating disc exceeds the preset temperature; and when the hard protection switch is disconnected to fail and the temperature of the heating disc is too high, the protection circuit can be automatically fused. If a short circuit condition occurs, the power of the heating disc is too high, and the main control chip can disconnect the total power supply to avoid dangerous conditions. The process of using the breathing machine by the user is safer through multiple protection measures, and the user experience is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from the structures shown in these drawings without inventive effort to a person of ordinary skill in the art.

Fig. 1 is a schematic diagram of an internal structure of a dry-fire protection device for a water tank according to an embodiment of the present utility model.

Fig. 2 is a schematic view of the structure of the inside of a heating plate according to an embodiment of the present utility model.

Fig. 3 is a schematic diagram of an internal circuit of a heating plate according to an embodiment of the present utility model.

Fig. 4 is a schematic diagram of another internal structure of the dry-fire protection device for a water tank according to the embodiment of the present utility model.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

For a clearer and more accurate understanding of the present utility model, reference will now be made in detail to the accompanying drawings. The accompanying drawings, in which like reference numerals refer to like elements, illustrate examples of embodiments of the utility model. It is to be understood that the proportions shown in the drawings are not to scale as to the actual practice of the utility model, and are for illustrative purposes only and are not drawn to scale.

The application provides a dry combustion method protection device is prevented to water tank, the water tank heats through the heating plate, and the condition of dry combustion method appears in the in-process of heating can appear in the water tank lack of water and make the heating plate appear.

Referring to fig. 1, an internal structure diagram of a dry-fire protection device for a water tank according to an embodiment of the utility model is shown. The water tank dry heating prevention protection device 10 comprises a main control chip 101, a liquid level monitor 102, a heating controller 103, a temperature monitor 104, a heating plate 105 and a water tank 106. The main control chip 101 is electrically connected with the temperature monitor 104 and the heating controller 103, respectively, and is used for controlling the temperature monitor 104 and the heating controller to work 103.

The heating controller 103 is further electrically connected to the heating plate 105 for adjusting the heating temperature of the heating plate, and the heating controller adjusts the heating temperature of the heating plate by changing the heating power of the heating plate 105.

The level monitor 102 is disposed in the water tank 106 for monitoring the water level in the water tank. In this embodiment, the liquid level detector 102 is an optical liquid level detector. The level detector 102 may determine whether the water level in the water tank is below a predetermined water level threshold by emitting light waves to the water tank 106 and based on receiving the reflected light waves.

The temperature monitor 104 is used to monitor the heating temperature of the heating plate. When the water level in the water tank is lower than the water level threshold value or the heating temperature of the heating plate exceeds the temperature threshold value, the main control chip 101 controls the heating plate to be closed. Specifically, when the water level monitor monitors that the water level in the water tank is lower than the water level threshold, the main control chip 101 sends an instruction for stopping the heating plate from heating the water tank to the heating controller, and the heating controller executes the instruction to control the heating plate to stop heating the water tank.

Referring to fig. 2, fig. 2 is a schematic view illustrating an internal structure of a heating plate according to an embodiment of the utility model. The heating plate is internally provided with a protection circuit, which in this embodiment is a fuse 1, which is arranged between the heating circuit and the power supply inside the heating plate. The heating plate comprises a hard protection switch which is used for controlling the heating plate to be electrified or powered off.

Referring to fig. 3, fig. 3 is a schematic diagram of an internal circuit of a heating plate according to an embodiment of the utility model. The warming controller 103 includes a warming control circuit 2. The main control chip 101 includes a main control circuit 3. The temperature monitor 104 includes a temperature monitoring circuit 4. The main control circuit 3, the heating control circuit 2 and the temperature monitoring circuit 4 are used together to perform the functions of heating control and temperature monitoring. The main control circuit 3 receives instructions to control the heating control circuit 2 and the temperature monitoring circuit 4, the temperature monitoring circuit 4 is connected with the heating plate, part of circuits in the temperature monitoring circuit are used for heating and controlling the heating plate, and part of circuits are used for monitoring the temperature of the heating plate.

When the heating control module controls the heating disc to stop heating and fail, the heating disc continuously heats and the heating temperature exceeds a first temperature threshold, the main control chip 101 controls the hard protection switch to be turned off, so that the heating disc is powered off; if the hard protection switch is disconnected to fail, and the heating disc is continuously heated to enable the heating temperature to exceed the second temperature threshold, the safety circuit is automatically disconnected.

During the heating process or during the opening of the safety circuit, a short-circuit situation may occur. When the short circuit condition occurs, the heating plate may have a heating power exceeding the maximum power, which may be dangerous. The main control chip and the heating plate are connected with an external power supply, the main control chip can control the disconnection of the heating plate and the external power supply, and when the main control chip 101 monitors that the heating power of the heating plate exceeds the preset maximum power, the main control chip controls the disconnection of the heating plate and the external power supply, so that the heating plate is powered off.

Referring to fig. 4, fig. 4 is another schematic diagram illustrating an internal structure of a dry-fire protection device for a water tank according to an embodiment of the present utility model.

The water tank dry-heating prevention protection device 10 further comprises a man-machine interaction module 107, an audible and visual alarm module 108, a turbine fan 109 and a pressure flow sensor 110.

The man-machine interaction module 107 is electrically connected to the main control chip 101. The man-machine interaction module provides an interface for a user, and is used for receiving an instruction input by the user and sending the instruction to the main control chip 101, so that the main control chip 101 controls the heating controller according to the instruction, and the heating controller controls the heating disc to start or stop working. On the interface, early warning information can also be displayed, for example, when the water level in the water tank is lower than a water level threshold value, and when the temperature of the heating plate exceeds a temperature threshold value, prompt information can be displayed on the interface to a user for early warning. When a user wants to start a heating plate, inputting a heating plate starting instruction into the man-machine interaction module 107, wherein the man-machine interaction module 107 sends the instruction to the main control chip 101, and the main control chip 101 controls the heating controller to start heating the heating plate; the user may also input the heating temperature of the hotplate.

The audible and visual alarm module 108 is configured to control the audible and visual alarm module 108 to perform an early warning when the water level in the water tank is lower than a water level threshold, so as to remind a user to add water into the water tank.

The turbo fan 109 is electrically connected to the main control chip 101, and is configured to generate an air flow with a set pressure and flow under the control of the main control chip 101. The user may input the pressure and flow rate of the air flow output by the turbo fan 109 at the man-machine interaction module 107.

The pressure and flow sensor 110 is electrically connected to the main control chip 101, and is configured to obtain the pressure and flow of the air flow output by the turbine fan 109. And feeds back to the main control chip 101 to enable the main control chip 101 to adjust the air pressure and flow rate of the air flow.

The dry heating preventing protection device for the water tank further comprises a water storage device, the water storage device is electrically connected with the main control chip 101 to receive instructions of the main control chip, the water storage device is connected with the water tank, and the main control chip can send instructions to the water storage device to enable the water storage device to add water into the water tank. And the main control chip 101 is used for controlling the water storage device to add water into the water tank when the water level in the water tank is lower than a water level threshold value.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, if and when such modifications and variations of the present utility model fall within the scope of the claims and the equivalents thereof, the present utility model is intended to encompass such modifications and variations.

The above list of preferred embodiments of the present utility model is, of course, not intended to limit the scope of the utility model, and equivalent variations according to the claims of the present utility model are therefore included in the scope of the present utility model.

Claims

1. The dry heating prevention protection device for the water tank is characterized by comprising a water tank, a heating disc, a temperature monitor, a liquid level monitor, a heating controller and a main control chip, wherein the main control chip is respectively and electrically connected with the temperature monitor and the heating controller and is used for controlling the temperature detector and the heating controller to work; the heating controller is also electrically connected with the heating disc and used for adjusting the heating temperature of the heating disc; the liquid level monitor is arranged on the water tank and is used for monitoring the water level in the water tank; the temperature monitor is used for monitoring the heating temperature of the heating plate; when the water level in the water tank is lower than a water level threshold or the heating temperature of the heating plate exceeds a temperature threshold, the main control chip controls the heating plate to be closed.

2. The dry heating prevention protection device for the water tank of claim 1, wherein the heating plate comprises a hard protection switch for controlling the heating plate to be electrified or powered off, a safety circuit is connected between the heating plate and a power supply, when the heating temperature of the heating plate exceeds a first temperature threshold value, the main control chip controls the hard protection switch to be disconnected, so that the heating plate is powered off, and when the hard protection switch is disconnected to fail and the heating temperature of the heating plate exceeds a second temperature threshold value, the safety circuit is automatically disconnected.

3. The dry fire protection device for a water tank of claim 2, wherein the safety circuit comprises: and a fuse.

4. The dry heating prevention protection device for a water tank according to claim 2, wherein the main control chip is connected with the heating plate and an external power supply, and the main control chip can control the heating plate to be disconnected with the external power supply; when the main control chip monitors that the heating power of the heating disc exceeds the preset maximum power, the heating disc is controlled to be disconnected from an external power supply, so that the heating disc is powered off.

5. The dry heating prevention protection device for the water tank according to claim 2, further comprising a man-machine interaction module electrically connected with the main control chip, wherein the man-machine interaction module is used for receiving an instruction input by a user and sending the instruction to the main control chip, so that the main control chip controls the heating controller according to the instruction, and the heating controller controls the heating disc to start or stop working.

6. The dry heating prevention protection device for a water tank according to claim 2, further comprising an audible and visual alarm module, wherein the audible and visual alarm module is used for controlling the audible and visual alarm module to perform early warning when the water level in the water tank is lower than a water level threshold.

7. The dry heating preventing protection device for a water tank according to claim 2, further comprising a water storage device electrically connected with the main control chip, wherein the water storage device is further communicated with the water tank, and is used for controlling the water storage device to add water into the water tank by the main control chip when the water level in the water tank is lower than a water level threshold.

8. The dry heating prevention protection device for a water tank of claim 2, further comprising a turbo fan electrically connected to the main control chip for generating an air flow of a set pressure and flow rate under the control of the main control chip.

9. The dry-fire prevention protection device for a water tank of claim 8, further comprising a pressure and flow sensor electrically connected to the main control chip for obtaining the pressure and flow of the air flow output by the turbo fan.

10. A ventilator comprising a ventilator body and a water tank anti-dry heat protection device according to any one of claims 1-9 disposed on the ventilator body.