Dry-burning-resistant structure of water heater and water heater
By designing an anti-dry burning structure in the electric water heater and disconnecting the heating circuit using water level detection, the problem of delay in obtaining dry burning information of the electric water heater is solved, and active anti-dry burning is achieved, which improves safety and reduces maintenance costs.
Patent Information
- Application Number
- CN202420444540.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-07
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-03-07
AI Technical Summary
During dry burning, the existing electric water heaters are delayed in obtaining dry burning information due to the position distance between the sensor and the heating device, and it is impossible to actively predict that the dry burning occurs, resulting in irreversible damage to the insulation layer.
A water heater anti-dry burning structure is designed, including a heating circuit, an anti-dry burning mechanism and a switch. The anti-dry burning mechanism detects the water level in the gallbladder body. If the water level is less than the preset water level, the heating circuit is disconnected to avoid the heating device starting, thereby achieving active anti-dry burning.
It realizes the timely acquisition and active prediction of dry burning information by the electric water heater, prevents damage to the insulation layer by the dry burning, improves the safety of the use of the electric water heater, and reduces the maintenance cost and difficulty of repair.
Smart Images
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Abstract
Description
Technical Field
[0001] The present application belongs to the field of electrical appliance technology, and specifically relates to a water heater anti-dry-burning structure and a water heater. Background Art
[0002] Electric water heaters are water heaters that use electricity as energy for heating. Electric water heaters can be divided into three types according to the heating power: storage type, instant type and rapid heating type.
[0003] The electric water heater of the related technology usually has an anti-dry-burning structure, which usually includes an over-temperature thermostat. The over-temperature thermostat is arranged in the tank body. When the water heater is dry-burned, the sensor of the over-temperature thermostat will detect a sharp rise in temperature. At this time, the over-temperature thermostat can display the temperature on the display panel of the electric water heater and can automatically trip and cut off the power.
[0004] However, there is a certain distance between the sensor and the heating device, which causes a delay in the electric water heater's acquisition of dry-burning information and an inability to actively predict the occurrence of dry-burning. There is a time difference between the actual discovery of dry-burning and the detection and termination of dry-burning. When the power is cut off by the circuit breaker, the dry-burning has lasted for several minutes, causing irreversible damage to the insulation layer of the electric water heater, thereby affecting the insulation performance of the electric water heater during use. Utility Model Content
[0005] The present application provides a water heater anti-dry burning structure and a water heater, which are used to solve the technical problem that the electric water heater in the related art has a delay in obtaining dry burning information and cannot actively predict the occurrence of dry burning, resulting in irreversible damage to the insulation layer of the water heater.
[0006] On the one hand, the present application provides a water heater anti-dry-burning structure, including a heating circuit, an anti-dry-burning mechanism and a switch, wherein the heating circuit is electrically connected to the anti-dry-burning mechanism, and the heating circuit is used to turn on or off the heating device of the water heater when connected or disconnected; the anti-dry-burning mechanism is configured to detect the water level in the tank body of the water heater, and when the water level in the tank body is less than a preset water level, control the heating circuit to be disconnected; when the water level in the tank body is greater than or equal to the preset water level, control the heating circuit to be connected; the switch is used to be electrically connected to the heating device to turn on or off the heating device, and the switch is configured to disconnect the electrical connection with the heating device when the heating circuit is disconnected.
[0007] In some embodiments, the anti-dry burning mechanism includes a detection component and an opening and closing component electrically connected to the detection component, the detection component is used to detect the water level in the bile body, and the opening and closing component is used to control the heating circuit to be disconnected when the water level in the bile body is lower than a preset water level, and to control the heating circuit to be connected when the water level in the bile body is greater than or equal to the preset water level.
[0008] In some embodiments, the detection component is one of a photoelectric liquid level sensor, a pressure sensor, an ultrasonic liquid level sensor, a capacitive liquid level sensor and a float liquid level sensor.
[0009] In some embodiments, the detection component is disposed on a flange for mounting the heating device, the detection component is located in the gallbladder body, and the detection component is located below the heating device.
[0010] In some embodiments, the opening and closing assembly includes an automatic switch.
[0011] In some embodiments, the detection component has a signal line, the heating circuit has a live line, and the signal line and the live line are electrically connected to the opening and closing component respectively.
[0012] In some embodiments, the opening and closing assembly is used to be arranged in the electrical room of the water heater.
[0013] In some embodiments, the switch comprises a push switch or a knob switch.
[0014] In some embodiments, the switch is configured to be disposed on a display panel of the water heater.
[0015] On the other hand, the present application provides a water heater, comprising a water heater body and a water heater anti-dry-burning structure arranged on the water heater body.
[0016] The present application provides a water heater anti-dry-burning structure and a water heater. The water heater anti-dry-burning structure provided by the present application can disconnect the heating circuit when the anti-dry-burning mechanism detects that the water level in the tank is lower than the preset water level. Even if the user touches the switch by mistake at this time, so that the switch is in the on state, the heating device cannot be started due to the disconnection of the heating circuit, so that the heating device cannot boil water. When the water in the tank is insufficient, the electric water heater can actively prevent the heating device from being turned on to prevent dry-burning. There is no need to wait for the electric water heater to dry-burn for a period of time before cutting off the heating device. The electric water heater can timely obtain and actively predict the dry-burning information in the tank, thereby realizing the electric water heater. Active dry-burn prevention prevents the electric water heater from dry-burning, thereby preventing the thermal insulation performance of the electric water heater insulation layer from being affected, indirectly improving the safety of the electric water heater, and eliminating the need to manually reset the over-temperature thermostat of the related technology after dry-burning, so that users do not need to contact after-sales service for repairs after dry-burning occurs, thereby reducing the repair cost and difficulty of the electric water heater; when the dry-burn prevention mechanism detects that the water level in the tank is equal to or greater than the preset water level, the heating circuit can be connected, so that the heating device can be started to boil water through the switch, so that the heating device can be turned on to boil water when there is sufficient water in the tank, thereby further preventing the water heater from dry-burning and improving the use effect of the electric water heater. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.
[0018] Figure 1 A circuit diagram of a water heater anti-dry-burning structure provided in an embodiment of the present application;
[0019] Figure 2 for Figure 1 Schematic diagram of the electrical connection structure of the detection component, the opening and closing component and the heating circuit;
[0020] Figure 3 A schematic diagram of the structure of a water heater provided in an embodiment of the present application;
[0021] Figure 4 for Figure 3 Schematic diagram of a partial cross-section structure.
[0022] Description of reference numerals:
[0023] 100, heating circuit; 110, live wire;
[0024] 200, anti-dry burning mechanism; 210, detection component; 211, signal line; 220, opening and closing component;
[0025] 300. Heating device;
[0026] 400, flange;
[0027] 500, electrical room;
[0028] 600, switch;
[0029] 700. Display panel;
[0030] 800, bile body; 810, inner bile; 820, outer bile.
[0031] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0033] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here, for example.
[0034] In the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.
[0035] The electric water heater of the related technology usually has an anti-dry-burning structure, which usually includes an over-temperature thermostat. The over-temperature thermostat is arranged in the tank body. When the water heater is dry-burned, the sensor of the over-temperature thermostat will detect a sharp rise in temperature. At this time, the over-temperature thermostat can display the temperature on the display panel of the electric water heater and can automatically trip and cut off the power.
[0036] However, there is a certain distance between the sensor and the heating device, which causes a delay in the electric water heater's acquisition of dry-burning information and makes it impossible to actively predict the occurrence of dry-burning. There is a time difference between the actual discovery of dry-burning and the detection and termination of dry-burning. When the power is cut off by the circuit breaker, the dry-burning has lasted for several minutes, causing irreversible damage to the insulation layer of the electric water heater, thereby affecting the insulation performance of the electric water heater during use; and the over-temperature thermostat is set. When dry-burning occurs, the over-temperature thermostat needs to be reset. The over-temperature thermostat is usually set inside the tank body, so the tank body needs to be disassembled to reset the over-temperature thermostat. These operations are dangerous to users and generally require after-sales personnel to come to the site for repairs.
[0037] In order to solve the above technical problems, the present application provides a water heater anti-dry-burning structure and a water heater. When the photoelectric liquid level sensor detects that the water level in the tank is lower than the preset water level, the signal line and the live line are electrically connected to the automatic switch respectively, so that the photoelectric liquid level sensor disconnects the heating circuit through the automatic switch. Even if the user accidentally touches the push switch to turn on the heating device, the heating device cannot work. When the water in the tank is insufficient, the electric water heater can actively prevent the heating device from turning on to prevent dry-burning. There is no need to wait for the electric water heater to dry-burn for a period of time before cutting off the heating device. The electric water heater can obtain the dry-burning information in time and actively predict it, thereby realizing the active dry-burning prevention of the electric water heater, thereby preventing The dry-burning of the electric water heater affects the thermal insulation performance of the thermal insulation layer of the electric water heater, which indirectly improves the safety of the use of the electric water heater, and there is no need to manually reset the over-temperature thermostat of the related technology after the dry-burning, so that the user does not need to contact after-sales for repair after the dry-burning occurs, thereby reducing the repair cost and difficulty of the electric water heater; when it is detected that the water level in the tank is equal to or greater than the preset water level, because the signal line and the live wire are respectively electrically connected to the automatic switch, the automatic switch can connect the heating circuit, so that the user can start the heating device to boil water through the push-type switch, so that when there is sufficient water in the tank, the heating device can be turned on to boil water, thereby further preventing the water heater from dry-burning and improving the use effect of the electric water heater.
[0038] Combination Figure 1 and Figure 2 On the one hand, the present application provides a water heater anti-dry burning structure, including a heating circuit 100, an anti-dry burning mechanism 200 and a switch 600, the heating circuit 100 is electrically connected to the anti-dry burning mechanism 200, and the heating circuit 100 is used to turn on or off the heating device 300 of the water heater when connected or disconnected.
[0039] The anti-dry-burn mechanism 200 is configured to detect the water level in the tank 800 of the water heater, and when the water level in the tank 800 is lower than a preset water level, control the heating circuit 100 to be disconnected; when the water level in the tank 800 is greater than or equal to the preset water level, control the heating circuit 100 to be connected.
[0040] The switch 600 is used to be electrically connected to the heating device 300 to turn on or off the heating device 300 . The switch 600 is configured to be electrically disconnected from the heating device 300 when the heating circuit 100 is disconnected.
[0041] In this embodiment, the two ends of the heating circuit 100 are respectively connected to the positive and negative poles of the power supply of the water heater, the heating device 300 is connected in series to the heating circuit 100, so as to realize power supply to the heating device 300, the switch 600 is connected in series to the heating circuit 100, and the preset water level is set to a position just submerging the heating device 300. In other embodiments, the heating device 300 can be turned on or off separately by the switch 600, the preset water level can also be set to a position slightly larger than the heating device 300, or the preset water level can be set to a position slightly smaller than the heating device 300, or the preset water level can be set to a position that submerges half of the heating device 300; the preset water level can be adaptively adjusted according to the position or shape of the heating device 300.
[0042] By adopting the above technical solution, when the anti-dry-burn mechanism 200 detects that the water level in the tank body 800 is lower than the preset water level, the heating circuit 100 can be disconnected. Even if the user touches the switch 600 by mistake at this time, so that the switch 600 is in the on state, the water heater cannot start the heating device 300 because the heating circuit 100 is disconnected, so that the heating device 300 cannot boil water. When the water in the tank body 800 is insufficient, the electric water heater can actively prevent the heating device 300 from being turned on to prevent dry-burning. There is no need to wait for the electric water heater to dry-burn for a period of time before cutting off the heating device 300. The electric water heater can timely obtain the dry-burning information in the tank body 300 and actively predict it, thereby realizing the active anti-dry-burning of the electric water heater. Dry burning, thereby preventing the electric water heater from dry burning and affecting the thermal insulation performance of the insulation layer of the electric water heater, indirectly improving the safety of the electric water heater, and there is no need to manually reset the over-temperature thermostat of the related technology after dry burning, so that the user does not need to contact after-sales for repair after dry burning occurs, thereby reducing the repair cost and difficulty of the electric water heater; when the anti-dry burning mechanism 200 detects that the water level in the tank body 800 is equal to or greater than the preset water level, it can connect the heating circuit 100, so that the heating device 300 can be started to boil water through the switch 600, so that the heating device 300 can be turned on to boil water when there is sufficient water in the tank body 800, thereby further preventing the water heater from dry burning and improving the use effect of the electric water heater.
[0043] The setting of the switch 600 enables the user to heat the water in the tank body 800 as needed. Compared with the electric water heater that automatically heats the water in the tank body 800, the setting of the switch 600 can further prevent the electric water heater from drying out, thereby further improving the thermal insulation performance of the electric water heater; and the switch 600 turns on and off the heating device 300 through the heating circuit 100, so that when the heating circuit 100 is disconnected, no matter whether the user starts the switch 600 or touches the switch 600 by mistake, the water in the tank body 800 cannot be heated, thereby further preventing the electric water heater from drying out.
[0044] In other embodiments, after the user presses the switch 600 to turn on the heating device 300 through the heating circuit 100, the water inside the bile body 800 can be intermittently heated, for example, once every half an hour, or the water inside the bile body 800 can be continuously heated, or a temperature sensor can be provided to detect the temperature of the water in the bile body 800 to achieve water temperature control.
[0045] Combination Figure 1 and Figure 2 The anti-dry burning mechanism 200 includes a detection component 210 and an opening and closing component 220 electrically connected to the detection component 210. The detection component 210 is used to detect the water level in the gallbladder body 800. The opening and closing component 220 is used to control the heating circuit 100 to be disconnected when the water level in the gallbladder body 800 is lower than the preset water level, and to control the heating circuit 100 to be connected when the water level in the gallbladder body 800 is greater than or equal to the preset water level.
[0046] In this embodiment, the anti-dry burning mechanism 200 also includes a controller, and the detection component 210, the opening and closing component 220 and the switch 600 are all electrically connected to the controller. The controller can receive the signal of the detection component 210, thereby controlling the opening and closing of the opening and closing component 220 and the switch 600.
[0047] By adopting the above technical solution, when the detection component 210 detects that the water level in the bile body 800 is lower than the preset water level, the opening and closing component 220 can disconnect the heating circuit 100; when the detection component 210 detects that the water level in the bile body 800 is greater than or equal to the preset water level, the opening and closing component 220 can connect the heating circuit. The arrangement of the detection component 210 and the opening and closing component 220 improves the detection and control effect of the heating circuit 100.
[0048] Combination Figure 1 and Figure 2 The detection component 210 is one of a photoelectric liquid level sensor, a pressure sensor, an ultrasonic liquid level sensor, a capacitive liquid level sensor and a float liquid level sensor.
[0049] In this embodiment, the detection component 210 is configured as a photoelectric liquid level sensor, which includes an infrared light emitting diode and a photosensitive receiver; the light emitted by the infrared light emitting diode toward the liquid surface is guided into the lens on the top of the photoelectric liquid level sensor, and when the liquid submerges the lens of the photoelectric liquid sensor, the light is refracted into the liquid, so that the photosensitive receiver cannot receive or can only receive a small amount of light; the photoelectric liquid level sensor senses this change in operating conditions, and the photosensitive receiver can drive the electrical switch inside the photoelectric liquid level sensor to control the opening and closing of the circuit; if there is no liquid, the light emitted by the infrared light emitting diode is directly reflected from the lens back to the photosensitive receiver; the photoelectric liquid level sensor, pressure sensor, ultrasonic liquid level sensor, capacitive liquid level sensor and float liquid level sensor are all existing technologies, and their specific structures are not described in detail.
[0050] By adopting the above technical scheme, the photoelectric liquid level sensor uses the principle of reflection and refraction of light at the interface of two different media, and is a new type of contact point liquid level measurement and control device; the photoelectric liquid level sensor has the advantages of simple structure, high positioning accuracy, no mechanical parts, no need for debugging, high sensitivity, corrosion resistance, low power consumption and small size. It also has the characteristics of high temperature resistance, high pressure resistance, strong corrosion resistance, stable chemical properties and little effect on the measured medium. The setting of the photoelectric liquid level sensor further improves the accuracy of liquid level detection in the gallbladder 800.
[0051] Combination Figures 1 to 4 The detection component 210 is disposed on a flange 400 for mounting the heating device 300 , the detection component 210 is located in the gallbladder body 800 , and the detection component 210 is located below the heating device 300 .
[0052] In this embodiment, the bile body 800 includes an inner liner 810 and an outer liner 820, the heating device 300 is arranged at one end of the inner liner 810, the heating device 300 includes a heating tube, the heating tube is installed on the flange 400, the flange 400 is installed at one end of the inner liner 810, so that the inner liner 810 installs the heating device 300 inside the inner liner 810; the photoelectric liquid level sensor is fixedly installed on the flange 400, when the flange 400 is installed to one end of the inner liner 810, the flange 400 can drive the photoelectric liquid level sensor to be synchronously installed inside the bile body 800.
[0053] In other embodiments, a separate hole can be opened on the gallbladder body 800, and the photoelectric liquid level sensor can be passed through and fixedly connected in the hole, so as to achieve the installation and fixation of the photoelectric liquid level sensor; in other embodiments, the position of the detection component 210 can also be adaptively adjusted according to the position and shape of the heating device 300.
[0054] By adopting the above technical scheme, the photoelectric liquid level sensor is integrated and installed on the flange 400, so that the photoelectric liquid level sensor can be installed when the flange 400 is installed, and when the photoelectric liquid level sensor is damaged, the photoelectric liquid level sensor can be removed for repair and replacement through the setting of the flange 400, thereby avoiding the manpower after-sales cost after over-temperature tripping; by determining the positions of the heating device 300 and the photoelectric liquid level sensor on the flange 400, the positions of the heating device 300 and the photoelectric liquid level sensor in the gallbladder body 800 can be determined, and the heating device 300 and the photoelectric liquid level sensor can be positioned after the flange 400 is installed; by arranging the detection component 210 below the heating device 300, it is convenient to turn on the heating device 300 for heating when the water in the gallbladder body 800 submerges the heating device 300.
[0055] Combination Figure 1 and Figure 2 The opening and closing component 220 includes an automatic switch; in this embodiment, the automatic switch is configured to connect the heating circuit 100 when the automatic switch is in a closed state, and disconnect the heating circuit 100 when the automatic switch is in an open state.
[0056] By adopting the above technical solution, the automatic switch is also called an automatic air switch. When a circuit has a serious overload, short circuit, pressure loss or other faults, it can automatically cut off the faulty circuit and effectively protect the electrical equipment connected in series behind them. Under normal circumstances, the automatic switch can also connect and disconnect the circuit and control the motor to start directly without frequent switching. Therefore, the automatic switch is a common disconnecting and switching device with a protection link in low-voltage circuits; in this embodiment, the heating circuit 100 is connected and disconnected by the automatic switch; the automatic switch is a prior art, and its specific structure will not be described in detail.
[0057] Combination Figure 1 and Figure 2 The detection component 210 has a signal line 211, which is arranged on the photoelectric liquid level sensor. The heating circuit 100 has a live wire 110. The signal line 211 and the live wire 110 are electrically connected to the opening and closing component 220 respectively, and the signal line 211 and the live wire 110 are electrically connected to the automatic switch respectively.
[0058] In this embodiment, by electrically connecting the signal line 211 of the photoelectric liquid level sensor and the live line 110 of the heating circuit 100 to the automatic switch respectively, the photoelectric liquid level sensor can bring about changes in the photoelectric effect according to changes in the water level in the gallbladder body 800, so that the signal line 211 can give different signals so that the automatic switch can open and close the heating circuit 100 through the live line 110, thereby improving the electrical connection effect between the photoelectric liquid level sensor, the heating circuit 100 and the automatic switch.
[0059] Combination Figures 1 to 4The opening and closing component 220 is used to be set in the electrical room 500 of the water heater, and the automatic switch is set in the electrical room 500; the signal line 211 and the live line 110 of the detection component 210 are both used to be partially set in the electrical room 500 of the tank body 800, and the signal line 211 of the photoelectric liquid level sensor is partially set on the photoelectric liquid level sensor, and partially passes through the flange 400 and extends into the electrical room 500.
[0060] In this embodiment, the space formed between one end of the inner tank 810 and one end of the outer tank 820 is the electrical room 500 of the tank body 800; in other embodiments, the signal line 211, the automatic switch and the live wire 110 can also be installed outside the tank body 800, or the signal line 211, the automatic switch and the live wire 110 can be installed in a separate box outside the tank body 800.
[0061] By adopting the above technical solution, the signal line 211, the automatic switch and the live wire 110 are arranged in the electrical room 500, thereby preventing the water inside the tank 800 from affecting the signal line 211, the automatic switch and the live wire 110, and when the user uses the electric water heater in the bathroom, it can prevent the water vapor in the bathroom from affecting the signal line 211, the automatic switch and the live wire 110, thereby improving the safety of the signal line 211, the automatic switch and the live wire 110.
[0062] Combination Figures 1 to 4 The switch 600 includes a push switch or a knob switch; in the present embodiment, the switch 600 is configured as a push switch, when the push switch is in a pressed state, the heating device 300 is turned on, and when the push switch is in a lifted state, the heating device 300 is turned off.
[0063] By adopting the above technical solution, by setting the switch 600 as a push switch, the user can turn the heating device 300 on and off by pressing, which has a simple structure and improves the convenience of the user when using it; the use of a mechanical push switch can prevent the user from accidentally touching the heating device 300 and turning on the heating device 300, thereby improving the safety of the user when using it.
[0064] In other embodiments, the switch 600 may be a knob-type switch, and the knob for adjusting the heating temperature in the gallbladder body 800 may be used by the knob-type switch, or the switch 600 may be replaced by a touch-type switch, and the heating device 300 may be turned on and off through the heating circuit 100 by using either the knob-type switch or the touch-type switch.
[0065] Combination Figures 1 to 4 , the switch 600 is used to be arranged on the display panel 700 of the water heater.
[0066] By adopting the above technical solution and arranging the switch 600 on the display panel 700 , it is convenient for the user to use the switch 600 .
[0067] In this embodiment, the display panel 700 is a panel on the outer wall of the outer tank 820 for user operation. The display panel 700 has a display screen for displaying temperature, time or other data, and also has some buttons for controlling the electric water heater, such as a button for turning on or off the electric water heater, etc.; in other embodiments, the switch 600 can be set at other positions of the electric water heater, such as one end of the outer tank 820, or the switch 600 can be set on a panel for wireless control of the electric water heater, both of which can enable the switch 600 to realize the opening and closing of the heating device 300 through the heating circuit 100.
[0068] Combination Figure 3 and Figure 4 On the other hand, the present application provides a water heater, comprising a water heater body and a water heater anti-dry-burning structure of any of the above-mentioned embodiments arranged on the water heater body.
[0069] Among them, the specific structure of the water heater anti-dry burning structure has been described in detail in the above embodiments, and will not be repeated here.
[0070] When the photoelectric liquid level sensor detects that the water level in the tank body 800 is lower than the preset water level, because the signal line 211 and the live line 110 are electrically connected to the automatic switch respectively, the photoelectric liquid level sensor disconnects the heating circuit 100 through the automatic switch. Even if the user touches the push switch by mistake to start the heating device 300, the heating device 300 cannot work, so that the electric water heater can actively prevent the heating device 300 from being turned on to prevent dry burning when the water in the tank body 800 is insufficient. There is no need to wait for the electric water heater to dry burn for a period of time before cutting off the heating device 300, so that the electric water heater can obtain the dry burning information in the tank body 800 in time and actively predict it, so as to realize the active dry burning prevention of the electric water heater, thereby preventing the electric water heater from burning dry and causing adverse effects. The thermal insulation performance of the thermal insulation layer of the electric water heater is affected, which indirectly improves the safety of the use of the electric water heater, and there is no need to manually reset the over-temperature thermostat of the related technology after dry burning, so that the user does not need to contact after-sales for maintenance after dry burning occurs, thereby reducing the maintenance cost and difficulty of the electric water heater; when it is detected that the water level in the tank 800 is equal to or greater than the preset water level, because the signal line 211 and the live wire 110 are respectively electrically connected to the automatic switch, the automatic switch can be connected to the heating circuit 100, so that the user can start the heating device 300 to boil water through the push switch, so that when there is sufficient water in the tank 800, the heating device 300 can be turned on to boil water, further preventing the water heater from dry burning, and improving the use effect of the electric water heater.
[0071] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments, and the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A water heater anti-dry burning structure, characterized in that: It comprises a heating circuit (100), an anti-dry-burning mechanism (200) and a switch (600), wherein the heating circuit (100) is electrically connected to the anti-dry-burning mechanism (200), and the heating circuit (100) is used to turn on or off a heating device (300) of a water heater when connected or disconnected; The anti-dry-burning mechanism (200) is configured to detect the water level in the tank (800) of the water heater, and when the water level in the tank (800) is lower than a preset water level, control the heating circuit (100) to be disconnected; and when the water level in the tank (800) is greater than or equal to the preset water level, control the heating circuit (100) to be connected; The switch (600) is used to be electrically connected to the heating device (300) so as to turn on or off the heating device (300), and the switch (600) is configured to disconnect the electrical connection with the heating device (300) when the heating circuit (100) is disconnected.
2. The water heater anti-dry burning structure according to claim 1, characterized in that: The anti-dry-burning mechanism (200) comprises a detection component (210) and an opening and closing component (220) electrically connected to the detection component (210); the detection component (210) is used to detect the water level in the gallbladder body (800); the opening and closing component (220) is used to control the heating circuit (100) to be disconnected when the water level in the gallbladder body (800) is less than a preset water level; and to control the heating circuit (100) to be connected when the water level in the gallbladder body (800) is greater than or equal to the preset water level.
3. The water heater anti-dry burning structure according to claim 2, characterized in that: The detection component (210) is one of a photoelectric liquid level sensor, a pressure sensor, an ultrasonic liquid level sensor, a capacitive liquid level sensor and a float type liquid level sensor.
4. The water heater anti-dry burning structure according to claim 2, characterized in that: The detection component (210) is arranged on a flange (400) for mounting the heating device (300), the detection component (210) is located in the gallbladder body (800), and the detection component (210) is located below the heating device (300).
5. The water heater anti-dry burning structure according to claim 2, characterized in that: The opening and closing component (220) includes an automatic switch.
6. The water heater anti-dry burning structure according to claim 2, characterized in that: The detection component (210) has a signal line (211), the heating circuit (100) has a live line (110), and the signal line (211) and the live line (110) are electrically connected to the opening and closing component (220) respectively.
7. The water heater anti-dry burning structure according to any one of claims 2 to 6, characterized in that: The opening and closing assembly (220) is used to be arranged in the electrical room (500) of the water heater.
8. The water heater anti-dry burning structure according to any one of claims 2 to 6, characterized in that: The switch (600) comprises a push switch or a knob switch.
9. The water heater anti-dry burning structure according to any one of claims 2 to 6, characterized in that: The switch (600) is used to be arranged on the display panel (700) of the water heater.
10. A water heater, characterized in that: It comprises a water heater body and a water heater anti-dry burning structure as claimed in any one of claims 1 to 9 arranged on the water heater body.