Electric heating humidifying device

Abstract

The invention belongs to the technical field of heating and humidifying equipment, and discloses an electric heating and humidifying device. The electric heating humidifying device comprises a first box body, a second box body, a double-floating-ball liquid level switch and a controller. A heating element is arranged in the first box body, a moisture outlet part is formed in the top of the first box body, the heating element can heat liquid in the first box body to form steam, and the steam can be discharged from the moisture outlet part. The second box body and the first box body are arranged side by side, and the bottoms of the second box body and the first box body are communicated; the top of the second box body is provided with a liquid inlet and a valve, and the valve is installed at the liquid inlet. The double-floating-ball liquid level switch is located in the second box body and can output a switching signal according to the liquid level of the second box body. The valve and the double-floating-ball liquid level switch are both electrically connected with a controller, and the controller controls opening and closing of the valve through switching signals. The electric heating humidifying device is high in heating efficiency and large in moisture generation amount; the liquid level control precision is high, and the failure rate is low; the structure is compact and space is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of heating and humidifying equipment, and particularly relates to an electric heating humidifying device. Background Art

[0002] A heating and humidifying device is a device that is driven by electric energy to convert water into water vapor or water mist to increase the environmental humidity. Among them, the heating and humidifying device in the form of electric heating is widely used, called an electric heating humidifier, also called a boiler humidifier. Specifically, according to the principle that electric current generates heat through resistance and electric energy is converted into heat energy, the electric heating tube is immersed in water, and the electric heating tube generates heat, thereby causing the water to boil into water vapor, thus creating a humid environment.

[0003] The existing electric heating humidifier includes a water tank, a heating tube is arranged in the water tank, the heating tube heats the water in the water tank, the water boils to generate steam, that is, moisture, to humidify the environment; when the water in the water tank decreases due to the discharge of moisture, the water level drops, and when the water level drops to the lowest water level set value, the water level control switch is triggered to replenish water to the water tank. When the water level rises to the highest water level set value after replenishing water, the control switch is triggered again to stop replenishing water to the water tank. However, when the existing electric heating humidifier replenishes water to the water tank, cold water continuously mixes into the boiling water in the water tank, reducing the output of moisture and having low humidifying efficiency; and due to the boiling of water, the water level control deviation is relatively large.

[0004] Therefore, there is an urgent need to propose an electric heating humidifying device to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an electric heating humidifying device, which has high heating efficiency, large amount of moisture generated; high precision in liquid level control and low failure rate; and is structurally compact, saving space.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] An electric heating humidifying device, comprising:

[0008] A first box body, a heating element is arranged in the first box body, a moisture outlet part is arranged at the top of the first box body, the heating element can heat the liquid in the first box body to form steam, and the steam can be discharged from the moisture outlet part;

[0009] A second box body, the second box body is arranged side by side with the first box body, and the bottom of the second box body is communicated with the first box body. An inlet and a valve are arranged at the top of the second box body, and the valve is installed at the inlet.

[0010] Double-float liquid level switch, the double-float liquid level switch is located in the second box body, and the double-float liquid level switch can output a switch signal according to the liquid level of the second box body;

[0011] Controller, both the valve and the double-float liquid level switch are electrically connected to the controller, and the controller controls the opening and closing of the valve through the switch signal.

[0012] As an optional technical solution of the electric heating humidification device, the electric heating humidification device further includes a base, and both the first box body and the second box body are fixed to the base.

[0013] As an optional technical solution of the electric heating humidification device, the heating element includes a heating tube and a protective cover. The heating tube is located at the bottom inside the first box body and is fixed to the inner side wall of the first box body. The electrical interface of the heating tube is located on the outer side wall of the first box body, and the protective cover can cover the electrical interface.

[0014] As an optional technical solution of the electric heating humidification device, when the liquid level of the second box body reaches the first liquid level, the valve opens, and the second box body is replenished with liquid. When the liquid level of the second box body reaches the second liquid level, the valve closes, and the second box body stops replenishing liquid. The first liquid level is higher than the height of the heating tube on the second box body, and the first liquid level is lower than the second liquid level.

[0015] As an optional technical solution of the electric heating humidification device, a liquid level column is provided on the second box body. The liquid level column is arranged along the height direction of the second box body, and both ends of the liquid level column are communicated with the second box body.

[0016] As an optional technical solution of the electric heating humidification device, a liquid level identification plate is provided on the liquid level column, and the liquid level identification plate is used to mark the liquid level of the liquid level column.

[0017] As an optional technical solution of the electric heating humidification device, an automatic pressure relief valve is provided on the first box body. When the pressure in the first box body reaches a predetermined value, the automatic pressure relief valve opens to release the pressure.

[0018] As an optional technical solution of the electric heating humidification device, a liquid discharge part is provided on the bottom wall of the first box body, and the liquid discharge part is used to discharge the liquid in the first box body.

[0019] As an optional technical solution of the electric heating humidification device, when the liquid level of the second box body reaches the second liquid level, the valve closes. An overflow port is provided on the second box body, and along the height direction of the second box body, the height of the overflow port is higher than the second liquid level, so that when the liquid level of the second box body is higher than the overflow port, the liquid in the second box body can flow out from the overflow port.

[0020] As an optional technical solution of the electric humidifying device, the moisture outlet portion includes an outlet pipe and an outlet cover, and the outlet cover is located at the outlet pipe to protect the outlet pipe.

[0021] Beneficial effects of the present invention:

[0022] The electric humidifying device provided by the present invention comprises a first box, a second box, a double float liquid level switch and a controller. A heating element is arranged in the first box, and a moisture outlet is arranged at the top. The heating element can heat the liquid in the first box to form steam, and the steam can be discharged from the moisture outlet to form moisture to humidify the environment. The second box and the first box are arranged side by side and connected at the bottom. A liquid inlet and a valve are arranged at the top of the second box. The valve is installed at the liquid inlet, and the liquid can be indirectly replenished to the first box by replenishing the liquid in the second box. Because the first box and the second box belong to different boxes, the heating element can only heat the liquid in the first box, and the amount of heated liquid is small, which can quickly heat the liquid and improve the heating efficiency; the first box and the second box are connected at the bottom. When the liquid in the first box is reduced due to steam discharge, new low-temperature liquid is replenished from the bottom of the first box, which can prevent the low-temperature liquid from directly entering the boiling zone and reduce the output of moisture; and the second box and the first box are arranged side by side, with a compact structure and space saving. The double-float liquid level switch is located in the second tank, and can output a switch signal according to the liquid level of the second tank. The valve and the double-float liquid level switch are electrically connected to the controller. The controller controls the opening and closing of the valve through the switch signal, thereby replenishing or stopping the replenishment of the second tank. The liquid level of the second tank is controlled by the double-float liquid level switch, and then the amount of liquid in the first tank is controlled. The double-float liquid level switch is located in the second tank. Since the temperature of the liquid in the second tank is low, there is no problem of drastic changes in the liquid level caused by boiling of the liquid in the first tank, thereby improving the accuracy of liquid level control; and the heating element and the double-float liquid level switch are respectively located in the first tank and the second tank, which can avoid the influence of the high-temperature liquid in the first tank on the double-float liquid level switch and reduce the failure rate of the double-float liquid level switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a first structural schematic diagram of an electric heating humidification device provided in an embodiment of the present invention;

[0024] Figure 2 is a second structural schematic diagram of the electric heating humidification device provided in an embodiment of the present invention;

[0025] Figure 3 It is a schematic diagram of the internal structure of the electric heating humidification device provided in an embodiment of the present invention.

[0026] In the figure:

[0027] 100, First box body; 110, Heating element; 111, Heating tube; 112, Protective cover; 120, Moisture outlet part; 121, Outlet pipe; 122, Outlet cover; 130, Automatic pressure relief valve; 140, Liquid discharge part; 200, Second box body; 210, Valve; 220, Liquid level column; 221, Liquid level identification plate; 230, Overflow water outlet; 300, Double-float liquid level switch; 400, Base. Detailed implementation manner

[0028] The present invention will be further described in detail below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the convenience of description, only the parts related to the present invention rather than all the structures are shown in the drawings.

[0029] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0031] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0032] The present invention provides an electrothermal humidification device, which has high heating efficiency, generates a large amount of moisture; has high precision in liquid level control and low failure rate; has a compact structure and saves space.

[0033] Specifically, Figures 1 to 3 As shown, the electric heating humidification device includes a first box 100, a second box 200, a double float liquid level switch 300 and a controller. A heating element 110 is provided in the first box 100, and a moisture outlet 120 is provided at the top of the first box 100. The heating element 110 can heat the liquid in the first box 100 to enter the boiling zone to form steam, and the steam can be discharged from the moisture outlet 120 to form moisture. The second box 200 and the first box 100 are arranged side by side, and the height ends of the second box 200 and the first box 100 can be flush or not. In this embodiment, the height ends of the second box 200 and the first box 100 are flush; and the second box 200 and the first box 100 are connected at the bottom to form a communicating vessel; the top of the second box 200 is provided with a liquid inlet and a valve 210, and the valve 210 is installed at the liquid inlet. The double float liquid level switch 300 is located in the second box 200. In this embodiment, the double float liquid level switch 300 is connected to the top of the second box 200. The double float liquid level switch 300 can output a switch signal according to the liquid level of the second box 200. The valve 210 and the double float liquid level switch 300 are both electrically connected to the controller, and the controller controls the opening and closing of the valve 210 through the switch signal.

[0034] Based on the above design, a heating element 110 is provided in the first box body 100, and a moisture outlet 120 is provided on the top. The heating element 110 can heat the liquid in the first box body 100 and enter the boiling zone to form steam. The steam can be discharged from the moisture outlet 120 to form moisture to humidify the environment. The second box body 200 and the first box body 100 are arranged side by side and connected at the bottom. A liquid inlet and a valve 210 are provided on the top of the second box body 200. The valve 210 is installed at the liquid inlet, and can indirectly replenish the liquid to the first box body 100 by replenishing the liquid in the second box body 200. Because the first box body 100 and the second box body 200 belong to different boxes, the heating element 110 can only heat the liquid in the first box body 100, and the amount of heated liquid is small, which can quickly heat the liquid and improve the heating efficiency; the first box body 100 and the second box body 200 are connected at the bottom. When the liquid in the first box body 100 is reduced due to steam discharge, new low-temperature liquid is replenished from the bottom of the first box body 100, which can prevent the low-temperature liquid from directly entering the boiling zone and reduce the output of moisture; and the second box body 200 and the first box body 100 are arranged side by side, with a compact structure and space saving. The double-float liquid level switch 300 is located in the second tank 200, and can output a switch signal according to the liquid level of the second tank 200. The valve 210 and the double-float liquid level switch 300 are both electrically connected to the controller. The controller controls the opening and closing of the valve 210 through the switch signal, thereby replenishing or stopping the replenishment of the second tank 200. The liquid level of the second tank 200 is controlled by the double-float liquid level switch 300, and then the amount of liquid in the first tank 100 is controlled. The double-float liquid level switch 300 is located in the second tank 200. Since the temperature of the liquid in the second tank 200 is low, there is no problem of drastic changes in the liquid level caused by boiling of the liquid in the first tank 100, thereby improving the accuracy of liquid level control; and the heating element 110 and the double-float liquid level switch 300 are respectively located in the first tank 100 and the second tank 200, which can avoid the influence of the high-temperature liquid in the first tank 100 on the double-float liquid level switch 300 and reduce the failure rate of the double-float liquid level switch 300.

[0035] It should be noted that the low temperature of the low temperature liquid mentioned above means that the temperature of the liquid added to the second box 200 is lower than the temperature of the liquid in the first box 100, and the temperature of the liquid newly entering the bottom of the first box 100 is lower than the temperature of the liquid heated in the first box 100. Optionally, the electrothermal humidification device further includes a base 400, and the first box 100 and the second box 200 are both fixed to the base 400, and the base 400 supports and fixes the first box 100 and the second box 200 to improve the structural stability of the electrothermal humidification device.

[0036] It is also worth noting the actual working process of the double-float liquid level switch 300 in this embodiment. The float inside the double-float liquid level switch 300 contains a magnet. When the liquid level in the first box body 100 rises or falls, the float moves along with the liquid level. When the magnet approaches the magnetic reed switches corresponding to the high liquid level and the low liquid level, the magnetic field generated by the magnet causes the switch contacts to close or open, thereby outputting a switch signal. Specifically, when the liquid level in the second box body 200 reaches the upper limit (i.e., the high liquid level), the float rises to a preset position, and one of the magnetic reed switches is triggered. The signal is transmitted to the controller, and the controller controls the valve 210 to cut off the liquid injection. When the liquid level in the second box body 200 drops to the lower limit (i.e., the low liquid level), the float descends to trigger another magnetic reed switch, the signal is transmitted to the controller, and the controller controls the valve 210 to start liquid replenishment.

[0037] Optionally, the heating element 110 includes a heating tube 111. The heating tube 111 is located at the bottom inside the first box body 100 and fixed to the inner side wall of the first box body 100. The electrical interface of the heating tube 111 is located on the outer side wall of the first box body 100. The heating tube 111 has a large contact area with the liquid, high heating efficiency, and simple layout.

[0038] Optionally, the heating element 110 further includes a protective cover 112. The protective cover 112 can cover the electrical interface. By setting the protective cover 112 at the electrical interface, it protects the electrical interface and the external wiring of the heating tube 111, and also prevents people from getting an electric shock.

[0039] Preferably, the protective cover 112 is provided with a hand-held part and a wire inlet. The hand-held part facilitates the installation and subsequent maintenance and disassembly of the protective cover 112; the wire inlet is for the entry of the external wiring. And the protective cover 112 has heat dissipation holes for the heat dissipation of the external wiring.

[0040] Preferably, the electric heating tube 111 extends along a direction perpendicular to the direction in which the first box body 100 and the second box body 200 are arranged side by side, and is arranged close to the bottom of the first box body 100, which is convenient for heating the new low-temperature liquid entering the bottom of the first box body 100.

[0041] Further, when the liquid level in the second box body 200 reaches the first liquid level (i.e., the low liquid level), the valve 210 opens, and the second box body 200 is replenished with liquid. When the liquid level in the second box body 200 reaches the second liquid level (i.e., the high liquid level), the valve 210 closes, and the second box body 200 stops replenishing liquid. The first liquid level is higher than the height of the heating tube 111 on the second box body 200, and the first liquid level is lower than the second liquid level. That is to say, the liquid volume or the liquid level in the first box body 100 should be able to ensure that the heating tube 111 is completely immersed in the liquid to avoid dry burning of the heating tube 111.

[0042] In this embodiment, multiple groups of heating tubes 111 are arranged along the height of the first box body 100. Exemplarily, it can be two groups, three groups, four groups, etc.

[0043] Optionally, a liquid level column 220 is provided on the second box body 200. The liquid level column 220 is arranged along the height direction of the second box body 200, and both ends of the liquid level column 220 communicate with the second box body 200, facilitating the staff to observe the liquid level in the second water tank from the outside; when the double-float liquid level switch 300 fails, it is convenient for the staff to manage the electrothermal humidifying device.

[0044] It should be noted that along the height direction of the second box body 200, the upper end of the liquid level column 220 should be higher than the high liquid level (the second liquid level) corresponding to the double-float liquid level switch 300, and the lower end of the liquid level column 220 should be lower than the low liquid level (the first liquid level) corresponding to the double-float liquid level switch 300.

[0045] Furthermore, in order to more intuitively observe the liquid level of the second water tank, a liquid level identification plate 221 is provided on the liquid level column 220. The liquid level identification plate 221 is used to mark the liquid level of the liquid level column 220. Specifically, the highest liquid level, the middle liquid level and the lowest liquid level can be marked on the liquid level column 220. The middle liquid level is located in the middle of the highest liquid level and the lowest liquid level. The highest liquid level corresponds to the second liquid level corresponding to the double-float liquid level switch 300, and the lowest liquid level corresponds to the first liquid level corresponding to the double-float liquid level switch 300.

[0046] Optionally, an automatic pressure relief valve 130 is provided on the first box body 100. When the pressure in the first box body 100 reaches a predetermined value, the automatic pressure relief valve 130 opens to release the pressure, thereby preventing the box body or other components inside the box from being damaged due to excessive pressure in the first box body 100.

[0047] Optionally, a liquid discharge part 140 is provided on the bottom wall of the first box body 100. The liquid discharge part 140 is used to discharge the liquid in the first box body 100. When the electrothermal humidifying device is not used for a long time, in order to prevent the liquid existing in the first box body 100 from corroding the first box body 100, the second box body 200 and their corresponding internal components for a long time, the liquid in the first box body 100 and the second box body 200 is discharged through the liquid discharge part 140, thereby extending the service life of the electrothermal humidifying device.

[0048] Specifically, the liquid discharge part 140 includes a liquid discharge port and a liquid discharge pipe. The liquid discharge port is opened at the bottom of the first box body 100, and then the liquid discharge port is externally connected to the liquid discharge pipe. The liquid discharge pipe is finally connected to a waste liquid outlet with a manual valve. When no liquid discharge is required, the manual valve is closed. When liquid discharge is required, the manual valve is opened for liquid discharge.

[0049] Optionally, an overflow port 230 is provided on the second box body 200. When the liquid level in the second box body 200 is higher than the overflow port 230, the liquid in the second box body 200 can flow out from the overflow port 230. Thus, when the liquid replenishment amount is excessive, the excess liquid overflows from the overflow port 230.

[0050] Specifically, along the height direction of the second box body 200, the height of the overflow port 230 is higher than the high liquid level (the second liquid level) of the double-float liquid level switch 300 and lower than the top surface of the second box body 200. The overflow port 230 is externally connected to a pipeline, and the externally connected pipeline is communicated to the redundant water collection pool.

[0051] Optionally, the moisture outlet part 120 includes an outlet pipe 121 and an outlet cover 122. The outlet cover 122 is located at the outlet pipe 121 to protect the outlet pipe 121.

[0052] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Electrothermal humidifying device, characterized in that, Comprising: A first box body (100), a heating element (110) is arranged inside the first box body (100), a moisture outlet part (120) is arranged at the top of the first box body (100), the heating element (110) can heat the liquid inside the first box body (100) to form steam, and the steam can be discharged from the moisture outlet part (120); A second box body (200), the second box body (200) is arranged side by side with the first box body (100), and the bottoms of the second box body (200) and the first box body (100) are communicated. A liquid inlet and a valve (210) are arranged at the top of the second box body (200), and the valve (210) is installed at the liquid inlet; A double-float liquid level switch (300), the double-float liquid level switch (300) is located in the second box body (200), and the double-float liquid level switch (300) can output a switch signal according to the liquid level of the second box body (200); A controller, both the valve (210) and the double-float liquid level switch (300) are electrically connected to the controller, and the controller controls the opening and closing of the valve (210) through the switch signal.

2. The electrothermal humidifying device according to claim 1, characterized in that The electrothermal humidification device further includes a base (400), and both the first box body (100) and the second box body (200) are fixed on the base (400).

3. The electrothermal humidifying device according to claim 1 or 2, characterized in that The heating element (110) includes a heating tube (111) and a protective cover (112), the heating tube (111) is located at the bottom inside the first box body (100) and is fixed to the inner side wall of the first box body (100), the electrical interface of the heating tube (111) is located on the outer side wall of the first box body (100), and the protective cover (112) can cover the electrical interface.

4. The electrothermal humidifying device according to claim 3, wherein When the liquid level of the second box body (200) reaches the first liquid level, the valve (210) opens, and the second box body (200) is replenished with liquid. When the liquid level of the second box body (200) reaches the second liquid level, the valve (210) closes, and the second box body (200) stops replenishing liquid. The first liquid level is higher than the height of the heating tube (111) on the second box body (200), and the first liquid level is lower than the second liquid level.

5. The electrothermal humidifying device according to claim 1 or 2, characterized in that, A liquid level column (220) is arranged on the second box body (200), the liquid level column (220) is arranged along the height direction of the second box body (200), and both ends of the liquid level column (220) are communicated with the second box body (200).

6. The electrothermal humidifying device according to claim 5, wherein, A liquid level identification plate (221) is arranged on the liquid level column (220), and the liquid level identification plate (221) is used to mark the liquid level of the liquid level column (220).

7. The electrothermal humidifying device according to claim 1 or 2, characterized in that, An automatic pressure relief valve (130) is arranged on the first box body (100). When the pressure inside the first box body (100) reaches a predetermined value, the automatic pressure relief valve (130) opens to release pressure.

8. The electrothermal humidifying device according to claim 1 or 2, characterized in that, A liquid discharge part (140) is arranged on the bottom wall of the first box body (100), and the liquid discharge part (140) is used to discharge the liquid inside the first box body (100).

9. The electrothermal humidifying device according to claim 1, characterized in that, When the liquid level of the second box body (200) reaches the second liquid level, the valve (210) closes. An overflow port (230) is provided on the second box body (200), and along the height direction of the second box body (200), the height of the overflow port (230) is higher than the second liquid level, so that when the liquid level of the second box body (200) is higher than the overflow port (230), the liquid in the second box body (200) can flow out from the overflow port (230).

10. The electrothermal humidifying device according to claim 1 or 2, characterized in that The moisture outlet part (120) includes an outlet pipe (121) and an outlet cover (122). The outlet cover (122) is located at the outlet pipe (121) to protect the outlet pipe (121).

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