CN110940092B - Water sealing device, electrical equipment and control method of electrical equipment - Google Patents

Water sealing device, electrical equipment and control method of electrical equipment Download PDF

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Publication number
CN110940092B
CN110940092B CN201911249156.2A CN201911249156A CN110940092B CN 110940092 B CN110940092 B CN 110940092B CN 201911249156 A CN201911249156 A CN 201911249156A CN 110940092 B CN110940092 B CN 110940092B
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China
Prior art keywords
water
pressure
water seal
main body
water storage
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CN201911249156.2A
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CN110940092A (en
Inventor
白瑜
郭特特
马曾文
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/0005Details for water heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/20Arrangement or mounting of control or safety devices
    • F24H9/2007Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2035Arrangement or mounting of control or safety devices for water heaters using fluid fuel

Abstract

The invention relates to a water sealing device, electrical equipment and a control method of the electrical equipment, wherein the water sealing device comprises: the water seal main body is provided with a water storage cavity and a detection port communicated with the water storage cavity; the mounting cover forms a mounting cavity with one end open, and one end of the water seal main body provided with the detection port is inserted into the mounting cavity from the open end of the mounting cavity; the movable piece is sleeved at one end of the water seal main body, inserted into the mounting cavity, and communicated with the detection port, and can move relative to the water seal main body in a direction away from the detection port under the action of water pressure; the signal acquisition assembly is arranged on the mounting cover and is used for acquiring the pressure value of the water pressure received by the moving part and the position information of the moving part. According to the water sealing device, whether the water sealing device is blocked or not is judged according to the two different numerical values of the position information of the moving part and the pressure value of the water pressure received by the moving part, so that false alarm is not easy to be caused, and the normal operation of the wall-mounted boiler is not influenced.

Description

Water sealing device, electrical equipment and control method of electrical equipment
Technical Field
The invention relates to the technical field of condensate water treatment, in particular to a water sealing device, electrical equipment and a control method of the electrical equipment.
Background
The gas heating water heater, also called as hanging stove, can be divided into conventional hanging stove and condensing hanging stove. The condensing type wall-mounted boiler performs secondary heat exchange by utilizing high-temperature flue gas, so that the heat exchange efficiency of the whole machine is improved, and the energy efficiency of the unit is improved. However, the resultant condensate water also becomes a problem to consider and handle in the design of the condensing wall-mounted boiler.
In the condensing wall-mounted boiler structure, condensed water generated by secondary heat exchange of high-temperature flue gas flows into a water sealing device from a secondary condenser and is discharged into a drain structure such as a floor drain through the water sealing device. In cold winter, if the temperature of the condensed water attached to the inner wall of the condensing pipe is too low and the condensed water in the water sealing device is not intersected with the newly generated warm condensed water, the condensed water is too low in temperature and is frozen, long-time ice particle accumulation can cause the conditions of blockage of the condensing pipe, unit effusion and the like, and the condensed water in the water sealing device can flow back into the unit after being accumulated too much, so that the unit parts are damaged, and the service life of the unit is greatly reduced.
Disclosure of Invention
Based on the above, it is necessary to provide a water sealing device, an electrical apparatus and a control method of the electrical apparatus, which can prevent the backflow of condensed water due to the blockage of the water sealing device, aiming at the problem of the backflow of condensed water caused by the blockage of the water sealing device.
A water seal device connected to a main body of an electrical apparatus, comprising:
the water seal main body is provided with a water storage cavity and a detection port communicated with the water storage cavity;
the water seal main body is provided with a detection port, and one end of the detection port is inserted into the installation cavity from the opening end of the installation cavity;
the moving part is sleeved at one end of the water seal main body, inserted into the mounting cavity, and communicated with the detection port, and can move relative to the water seal main body in a direction away from the detection port under the action of water pressure; and
the signal acquisition component is arranged on the mounting cover and is used for acquiring the pressure value of the water pressure received by the moving part and the position information of the moving part, and sending a signal to the main body according to the pressure value and the position information so as to control the working state of the main body.
According to the water sealing device, whether the water sealing device is blocked or not is judged according to the two different numerical values of the position information of the moving part and the pressure value of the water pressure received by the moving part, so that the normal operation of the wall-mounted boiler is not affected due to false alarm caused by the fact that the working state of the main body connected to the water sealing device is controlled according to the drainage state of the water sealing device in time.
In one embodiment, the signal acquisition assembly includes a pressure detection unit, the pressure detection unit being housed in the mounting cavity, the pressure detection unit being configured to acquire the pressure value.
In one embodiment, two ends of the pressure detection unit respectively prop against the moving member and the mounting cover, and the pressure detection unit can apply a force to the moving member towards the detection opening.
In one embodiment, the signal acquisition component includes a to-be-conducted module mounted on the mounting cover, the moving member is provided with a conducting member, and when the conducting member follows the moving member to move to a preset position, the conducting member conducts the to-be-conducted module.
In one embodiment, the water seal body includes:
the water storage pipe is provided with a connecting port and an overflow port which are respectively communicated with the water storage cavity;
the water inlet pipe comprises a water inlet and a water outlet which are communicated with each other, one end of the water inlet pipe, provided with the water outlet, is inserted into the water storage cavity from the connection port, and one end of the water inlet pipe, provided with the water inlet, protrudes out of the water storage pipe; and
the water outlet pipe is connected with the water storage pipe through the overflow port;
the water storage pipe is characterized in that the detection port is formed in the water storage pipe, the water outlet of the water inlet pipe faces the detection port, and the overflow port of the water storage pipe is located between the water outlet and the water inlet of the water inlet pipe.
In one embodiment, the water seal device further comprises a temperature sensor, and the mounting cover and/or the water storage pipe are/is provided with the temperature sensor.
In one embodiment, the water seal device further comprises a heating module, and the water storage pipe and/or the water outlet pipe sleeve are/is provided with the heating module.
An electrical device comprises the water sealing device, wherein the electrical device is a wall-mounted furnace.
A control method of an electrical apparatus, comprising the steps of:
acquiring a pressure value of water pressure received by a moving part of the water seal device;
when the pressure value is equal to or greater than a preset pressure value, acquiring position information of the moving part;
reporting a pressure detection failure when the moving member is not at a preset position;
and when the moving part is positioned at the preset position, reporting a liquid level protection fault and controlling the electrical equipment to be in a shutdown protection state.
In one embodiment, after the step of reporting a liquid level protection fault and controlling the electrical equipment to be in a shutdown protection state when the moving member is at the preset position, the method further comprises the following steps:
and obtaining the water temperature in the water seal main body, and heating the water seal main body when the water temperature is lower than the preset minimum water temperature.
Drawings
Fig. 1 is a schematic structural view of an electrical apparatus of the present invention;
fig. 2 is a schematic structural view of a water sealing device of the electrical apparatus shown in fig. 1;
fig. 3 is a partial enlarged view at the electrical apparatus a shown in fig. 2.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, an electrical apparatus 100 according to an embodiment of the present invention includes a water seal device 40, wherein the water seal device 40 can prevent smoke from flowing out with condensed water to pollute the environment while playing a role of water drainage. The structure of the middle water seal 40 of the present application will be described below using the electrical equipment 100 as an example of a wall-mounted boiler. The following examples are given by way of illustration only and are not intended to limit the technical scope of the present application. It will be appreciated that in other embodiments, the electrical apparatus 100 may also be embodied as other appliances equipped with the water seal device 40, which is not limited herein.
The wall-mounted boiler comprises a main body 20 and a water sealing device 40, wherein the water sealing device 40 is connected with the main body 20 through a pipeline, and condensed water generated by the main body 20 is discharged through the water sealing device 40. The main body 20 is internally provided with a control system which is in communication connection with the water seal device 40, so as to acquire signals sent by the water seal device 40 and control the working states of the water seal device 40 and the main body 20 according to the signals.
As shown in fig. 1 to 3, the water sealing device 40 includes a water sealing body 41, a mounting cover 42, a moving member 43, and a signal acquisition assembly. The moving member 43, the mounting cover 42 and the signal acquisition assembly are matched with each other, so that the water level in the water seal main body 41 can be monitored, and a signal is sent to the control system when the water seal device 40 is frozen and blocked.
The water seal body 41 includes a water storage pipe 412, a water inlet pipe 414 and a water outlet pipe 416 which are communicated with each other.
Specifically, the water storage tube 412 has a hollow tubular structure extending vertically along the gravity direction, and the water storage tube 412 is provided with a water storage chamber 4121, and a detection port 4123, a connection port and an overflow port respectively communicating with the water storage chamber 4121. Wherein, the detection port 4123 is opened at the bottom of the water storage tube 412, the connection port is opened at the top of the water storage tube 412, and the overflow port is opened at the sidewall of the water storage tube 412 and is located between the detection port 4123 and the connection port.
The water inlet pipe 414 has a hollow tubular structure extending vertically in the gravity direction, and the outer diameter of the water inlet pipe 414 is smaller than the inner diameter of the water storage pipe 412. The upper and lower ends of the water inlet pipe 414 are respectively provided with a water inlet and a water outlet which are mutually communicated, one end of the water inlet pipe 414 provided with the water outlet is inserted into the water storage cavity 4121 from the connecting port, and one end of the water inlet pipe 414 provided with the water inlet protrudes out of the water storage pipe 412.
One end of the water outlet pipe 416 is connected to the water storage pipe 412 through an overflow port, and the other end of the water outlet pipe 416 is bent and extended from the overflow port to be connected with external drainage structures such as a floor drain.
In this way, the water inlet pipe 414 is communicated with the main body 20 through a pipeline, condensed water flowing out of the main body 20 enters the water inlet pipe 414 through the water inlet, then flows into the water storage cavity 4121 of the water storage pipe 412 through the water outlet, the condensed water is continuously accumulated in the water storage cavity 4121, the water level in the water storage cavity 4121 is continuously increased until reaching the overflow port, and finally the condensed water in the water storage cavity 4121 flows into the water outlet pipe 416 through the overflow port to be discharged into the external environment. Since water plays a good sealing effect in the water seal body 41, leakage of smoke to the external environment can be effectively prevented.
The mounting cover 42 is in a cylindrical structure with one end open to form a mounting cavity with one end open, and one end of the water storage pipe 412 provided with the detection port 4123 is inserted into the mounting cavity from the open end of the mounting cavity. The moving member 43 has a cylindrical structure with an opening at one end, and the moving member 43 is sleeved at one end of the water seal main body 41 inserted into the mounting cavity and is communicated with the detection port 4123 of the water storage pipe 412.
Thus, the water in the water storage chamber 4121 enters the mover 43 through the detection port 4123. When the water seal body 41 is blocked due to ice formation or the like, the water level in the water storage pipe 412 gradually rises, so that the pressure of the condensed water acting on the moving member 43 gradually increases, and the moving member 43 moves in the direction away from the detection port 4123 in the gravity direction under the action of the water pressure, thereby triggering the signal acquisition assembly to send a signal to the control system.
The signal acquisition component is mounted on the mounting cover 42, and includes a pressure detection unit 441 and a module to be conducted (not shown). The pressure detecting unit 441 is configured to obtain a pressure value of the water pressure received by the moving member 43, and send a signal to the control system according to the pressure value of the water pressure received by the moving member 43; the to-be-conducted module is used for acquiring the position information of the moving member 43 and sending a signal to the control system according to the position information of the moving member 43.
In particular, in some embodiments, the pressure detecting unit 441 is accommodated in the mounting cavity, two ends of the pressure detecting unit 441 respectively abut against the moving member 43 and the mounting cover 42, and the pressure detecting unit 441 can apply a force to the moving member 43 towards the detecting opening 4123. In this way, the pressure detecting unit 441 is pressed when the moving member 43 moves downward by the water pressure, and the pressure detecting unit 441 can obtain the pressure value of the water pressure received by the moving member 43. When the water pressure applied to the moving member 43 gradually decreases, the pressure detecting unit 441 pushes the moving member 43 to move upward to return to the original state. Specifically, in one embodiment, the pressure detecting unit 441 is a pressure spring sensor provided with a pressure spring.
In other embodiments, the pressure detecting unit 441 is a pressure sensor provided with a sensing diaphragm for acquiring the air pressure value in the installation cavity. When the moving member 43 moves downward under the action of the water pressure, the volume of the installation cavity is reduced, air in the installation cavity is compressed, the air pressure in the installation cavity is increased, and the air pressure acts on the sensing diaphragm of the compression pressure sensor, so that the water pressure received by the moving member 43 is detected. When the water pressure applied to the moving member 43 gradually decreases, the air pressure in the installation cavity drives the moving member 43 to move upward to return to the initial state, and the air pressure in the installation cavity also gradually returns to the initial state.
The module to be conducted is mounted on the outer side wall of the mounting cover 42, and the top end of the module to be conducted continuously displays high-frequency electric signals. The side of the moving member 43 close to the module to be conducted is provided with a conducting member 432, and the conducting member 432 can move synchronously along with the moving member 43. When the water seal device 40 is in the normal drainage state, the conducting member 432 is located above the module to be conducted in the gravity direction, and the module to be conducted is in the disconnection state. When the conducting member 432 moves downward to a preset position along with the moving member 43, the conducting member 432 corresponds to a position where the high-frequency signal is released from the module to be conducted, so that the module to be conducted is conducted to transmit a signal to the control system in the main body 20.
Thus, when the water seal device 40 is in the normal drainage state, neither the pressure detection unit 441 nor the to-be-turned-on module sends a signal to the control system. When the water seal device 40 is in a blocking state and the water level in the water storage pipe 412 reaches a certain height, the pressure detection unit 441 and the to-be-conducted module sequentially (or simultaneously) send signals to the control system, the control system can judge that the water level in the water storage cavity 4121 exceeds the preset water level, and the water seal device 40 is in a blocking state, so that the shutdown protection mode is started to prevent excessive condensed water generated by continuous combustion of the wall-mounted furnace from flowing backward into the main body 20. When the control system only acquires the signal sent by the pressure detection unit 441 or one of the modules to be conducted, the surface pressure detection unit 441 or the module to be conducted fails, but the water level in the water storage cavity 4121 does not exceed the preset water level, so that the control system only reports that the surface pressure detection unit 441 or the module to be conducted fails, and the shutdown protection mode is not required to be started, thereby preventing the normal operation of the wall-mounted boiler from being influenced by the error shutdown.
In some embodiments, the water seal device 40 further includes a first temperature sensor 452 and a second temperature sensor 454, the first temperature sensor 452 is disposed on one side of the mounting cover 42 and integrated with the module to be conducted to detect the water temperature in the mounting cavity, and the second temperature sensor 454 is disposed on one end of the water storage tube 412 near the connection port to detect the temperature of the upper portion of the water storage tube 412. It will be appreciated that the number of temperature sensors is not limited thereto and that in other embodiments, the temperature sensors may be provided only on the water storage tube 412 or only on the mounting cap 42.
In some embodiments, the water seal device 40 includes a first heating module 461 and a second heating module 463, the first heating module 461 is sleeved on the outer side wall of the water storage tube 412, and the second heating module 463 is sleeved on the outer side wall of the water outlet tube 416. In this way, the first heating module 461 and the second heating module 463 can heat the water storage tube 412 and the water outlet tube 416 respectively, so as to melt the frost in the water storage tube 412 and the water outlet tube 416. In particular, in some embodiments, the first heating module 461 and the second heating module 463 are electromagnetic heaters, so as to heat the water storage tube 412 and the water outlet tube 416 at constant temperature respectively. It is understood that the number of the heating modules is not limited thereto, and different numbers of heating modules may be provided as needed to melt the frost in the water seal body 41, and the first heating module 461 and the second heating module 463 may be heating devices such as thermocouple heaters.
Thus, when the control system obtains that the water temperature detected by one of the temperature sensors is lower than the preset minimum water temperature after the water seal device 40 is blocked, it indicates that the water seal main body 41 is frozen, so that the control system controls the first heating module 461 and the second heating module 463 to heat the water seal main body 41 until the condensed water continues to circulate. When the condensed water is recirculated, the pressure applied to the moving member 43 is reduced, and thus the moving member 43 is lifted and reset by the pressure detecting unit 441 or the air pressure in the installation cavity, at which time the on-module is turned off again, and the control system controls the temperature sensor 46 to be turned off to stop heating.
The control method of the electrical apparatus 100 includes the following steps:
s110: the pressure value of the water pressure received by the moving member 43 of the water seal device 40 is obtained.
Specifically, when the water seal device 40 is blocked and normal drainage is impossible, the water in the water storage chamber 4121 is continuously accumulated to increase the water pressure received by the moving member 43, and the moving member 43 moves downward under the action of the water pressure, so that the pressure detecting unit 441 obtains the pressure value of the water pressure received by the moving member 43 and sends a signal to the control system.
S120: when the pressure value is equal to or greater than the preset pressure value, position information of the moving member 43 is acquired to determine the position of the moving member 43.
Specifically, when the pressure value obtained by the pressure detecting unit 441 is equal to or greater than the preset pressure value, the control system obtains a signal sent by the module to be turned on to obtain the position information of the moving member 43. When the conducting member 432 moves to a preset position to conduct the conducting module, it indicates that the moving member 43 moves downwards by a certain distance under the action of water pressure, and the module to be conducted sends information to the control system, and the control system acquires the information and reports the liquid level protection fault to enable the wall-mounted furnace to enter a shutdown protection mode. When the conduction module is not conducted, the surface moving member 43 is not moved to the corresponding position, but the pressure detecting unit 441 fails to report the failure, so that the control system reports the failure of pressure detection to remind the user to repair the pressure detecting unit 441.
And after the step of reporting the liquid level protection failure and controlling the electric device 100 to be in the shutdown protection state, the control method of the electric device 100 further includes the steps of: the water temperature in the water seal body 41 is obtained, and when the water temperature is lower than a preset minimum water temperature, the water seal body 41 is heated.
Specifically, the two temperature sensors respectively acquire the water temperatures of the condensed water in the water storage pipe 412 and the installation cover 42, and when one of the water temperatures acquired by the two temperature sensors is lower than a preset minimum water temperature (for example, 5 ℃), it indicates that the water seal main body 41 is frozen, so that the control system controls the temperature sensor 46 to heat the water seal main body 41 to melt the frost in the water seal main body 41, so that the water seal device 40 drains water again normally. After the water seal device 40 resumes the normal water discharge, the water level in the water storage chamber 4121 gradually decreases, so that the moving member 43 also moves upwards again to return to the initial state, and the control system controls the hanging stove to work normally again.
The water seal device 40 and the electrical equipment 100 provided with the same can judge whether the water seal device 40 is blocked according to two different values of the position information of the moving part 43 and the pressure value of the water pressure received by the moving part 43, so that false alarm is not easy to be caused and the normal operation of the wall-mounted boiler is not influenced. In addition, the water seal main body 41 can be heated when the water seal device 40 is frozen at low temperature, so that the blockage fault of the condensed water can be effectively solved in time, and the influence on the service life of the electrical equipment 100 caused by the backward flow of the condensed water into the main body 20 is avoided.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (10)

1. A water seal device (40) connected to a main body (20) of an electrical apparatus, comprising:
the water seal main body (41) is provided with a water storage cavity (4121) and a detection port (4123) communicated with the water storage cavity (4121);
the mounting cover (42) forms a mounting cavity with one end open, and one end of the water seal main body (41) provided with the detection port (4123) is inserted into the mounting cavity from the open end of the mounting cavity;
the moving piece (43) is in a cylindrical structure with one end open, is sleeved at one end of the water seal main body (41) inserted into the mounting cavity and is communicated with the detection port (4123), and the moving piece (43) can move relative to the water seal main body (41) along the direction away from the detection port (4123) under the action of water pressure; and
the signal acquisition component is arranged on the mounting cover (42) and is used for acquiring a pressure value of the water pressure received by the moving part (43) and position information of the moving part (43) and sending a signal to the main machine body (20) according to the pressure value and the position information so as to control the working state of the main machine body (20);
wherein, when the pressure value is equal to or greater than a preset pressure value, position information of the moving member (43) is acquired;
reporting a pressure detection failure when the moving member (43) is not in a preset position;
when the moving part (43) is at the preset position, reporting a liquid level protection fault and controlling the electrical equipment to be in a shutdown protection state.
2. The water seal arrangement (40) of claim 1, wherein the signal acquisition assembly includes a pressure detection unit (441), the pressure detection unit (441) being housed within the mounting cavity, the pressure detection unit (441) being configured to acquire the pressure value.
3. The water seal device (40) according to claim 2, wherein both ends of the pressure detecting unit (441) are respectively abutted against the moving member (43) and the mounting cover (42), and the pressure detecting unit (441) can apply a force to the moving member (43) toward the detecting port (4123).
4. The water seal arrangement (40) of claim 1, wherein the signal acquisition assembly comprises a module to be conducted mounted to the mounting cover (42), the moving member (43) is provided with a conducting member (432), and the conducting member (432) conducts the module to be conducted when the conducting member (432) follows the moving member (43) to move to a preset position.
5. The water seal arrangement (40) according to claim 1, wherein the water seal body (41) comprises:
a water storage pipe (412) provided with a connection port and an overflow port which are respectively communicated with the water storage cavity (4121);
the water inlet pipe (414) comprises a water inlet and a water outlet which are communicated with each other, one end of the water inlet pipe (414) provided with the water outlet is inserted into the water storage cavity (4121) from the connection port, and one end of the water inlet pipe (414) provided with the water inlet protrudes out of the water storage pipe (412); and
a water outlet pipe (416) connected to the water storage pipe (412) through the overflow port;
the water storage device comprises a water storage pipe (412), a water inlet pipe (414), a detection port (4123) and an overflow port, wherein the detection port (4123) is formed in the water storage pipe (412), the water outlet of the water inlet pipe (414) faces the detection port (4123), and the overflow port of the water storage pipe (412) is located between the water outlet of the water inlet pipe (414) and the water inlet.
6. The water seal arrangement (40) according to claim 5, characterized in that the water seal arrangement (40) further comprises a temperature sensor, the mounting cover (42) and/or the water storage tube (412) being provided with the temperature sensor.
7. The water seal arrangement (40) of claim 5, wherein the water seal arrangement (40) further comprises a heating module, the water storage pipe (412) and/or the water outlet pipe (416) being sheathed with the heating module.
8. An electrical apparatus, characterized by comprising a water seal device (40) according to any one of claims 1 to 7, said electrical apparatus being a wall-mounted oven.
9. A control method of the electrical equipment as set forth in claim 8, comprising the steps of:
acquiring a pressure value of water pressure received by a moving part (43) of the water seal device (40);
when the pressure value is equal to or greater than a preset pressure value, acquiring position information of the moving member (43);
reporting a pressure detection failure when the moving member (43) is not in a preset position;
when the moving part (43) is at the preset position, reporting a liquid level protection fault and controlling the electrical equipment to be in a shutdown protection state.
10. The control method of an electrical apparatus according to claim 9, characterized in that after the step of reporting a liquid level protection fault and controlling the electrical apparatus to be in a shutdown protection state when the moving member (43) is in the preset position, further comprising the steps of:
and acquiring the water temperature in the water seal main body (41), and heating the water seal main body (41) when the water temperature is lower than the preset minimum water temperature.
CN201911249156.2A 2019-12-09 2019-12-09 Water sealing device, electrical equipment and control method of electrical equipment Active CN110940092B (en)

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CN113739420A (en) * 2020-05-30 2021-12-03 芜湖美的厨卫电器制造有限公司 Condensing gas water heater and water seal device thereof

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