Water tank

Abstract

The water tank comprises a tank body and a water level detection device installed in the tank body, the water level detection device is at least used for detecting the final target water level and the anti-overflow water level, the anti-overflow water level is higher than the final target water level, and a water inlet pipe is installed on the side portion of the tank body; the water inlet pipe is provided with a water inlet end located on the outer side of the box body and a water outlet end located on the inner side of the box body, the water inlet end is higher than the final target water level, and the water outlet end is lower than the final target water level. According to the water tank, the water outlet end is lower than the final target water level, the risk that in the water adding process, a detection element, used for detecting the final target water level, of the water level detection device makes contact with water in advance and is triggered by mistake is effectively reduced, it is ensured that water can be stably and normally added to the preset water level, and the use experience of the purification and heating all-in-one machine is improved.

Description

Technical Field

[0001] The present application relates to the technical field of water purification equipment, and in particular to a water tank. Background Art

[0002] With economic development and the improvement of living standards, consumers are paying more and more attention to healthy water use and drinking water, and their requirements for water use are getting higher and higher. As a water treatment device that can deeply filter and purify water according to water use requirements, water purifiers are recognized and favored by more and more consumers.

[0003] Currently, there is a kind of all-in-one water purifier and heat machine on the market, which allows consumers to get both purified water and hot water at room temperature at the same time, and gradually replaces the old-fashioned water purifiers with only water purification function. This type of all-in-one water purifier and heat machine usually includes filtering devices, heating devices and other functional units to achieve filtering and heating. Its working principle is that the filter element of the filtering unit heats the purified water after filtering the raw water through the instant heating body of the heating unit, so that it can achieve the function of hot water after connecting to the faucet. Some all-in-one water purifiers and heat machines are also integrated with a water tank with a heat preservation function. If the boiled water heated by the instant heating body is not completely used, it can be placed in the water tank for storage and heat preservation for the next water withdrawal. Usually, the water tank is provided with a high water level detection structure and a water inlet pipe connected to the water outlet of the instant heating body. The water inlet pipe is located near the top of the water tank. During the water intake process of the water inlet pipe, water is easily splashed to the high water level detection structure, causing the high water level detection structure to come into contact with water and be triggered before water is added to the high water level, thereby causing a misjudgment of the water level and abnormal cessation of water addition, affecting the water replenishment amount in the water tank and the water supply to the user, greatly reducing the user experience of the all-in-one heat and water machine. Utility Model Content

[0004] The present application provides a water tank to solve the above-mentioned technical problem that the water tank abnormally stops adding water due to the mis-triggering of the high water level detection structure caused by water splashing.

[0005] The technical solution adopted in this application is:

[0006] A water tank comprises a tank body and a water level detection device installed in the tank body, wherein the water level detection device is at least used to detect a final target water level and an anti-overflow water level, wherein the anti-overflow water level is higher than the final target water level, and a water inlet pipe is installed on the side of the tank body, wherein the water inlet pipe has a water inlet end located outside the tank body and a water outlet end located inside the tank body, wherein the water inlet end is higher than the final target water level, and the water outlet end is lower than the final target water level.

[0007] The water tank in this application also has the following additional technical features:

[0008] The water level detection device is also used to detect an intermediate target water level, which is lower than the final target water level, and the water outlet is flush with or lower than the intermediate target water level.

[0009] The water inlet end is lower than the anti-overflow water level, and the ratio of the height difference between the anti-overflow water level and the final target water level to the cross-sectional area of ​​the water tank is 1.25-5.5.

[0010] The numerical ratio of the difference between the height difference between the anti-overflow water level and the final target water level to the preset error value of the water level detection device is 4-13.

[0011] The water inlet end extends horizontally and the water outlet end extends vertically so that the water inlet pipe is in an L-shaped structure as a whole.

[0012] An exhaust pipe is installed on the side of the box body. The exhaust pipe has an air inlet end located inside the box body and an air outlet end located outside the box body. The air inlet end extends upward and is higher than the anti-overflow water level.

[0013] The air inlet end extends vertically and the air outlet end extends horizontally so that the exhaust pipe is in an L-shaped structure as a whole, and the air outlet end is not higher than the anti-overflow water level.

[0014] The water inlet pipe and the exhaust pipe are respectively integrally formed with the box body; or, the water inlet pipe and the exhaust pipe are respectively connected to the box body by welding.

[0015] The water level detection device includes a vertical rod vertically inserted into the water tank and a first float and a second float floated on the vertical rod from bottom to top in sequence. A first detection element and a second detection element are provided in the vertical rod. The first detection element is used to identify the magnetic part in the first float to detect the final target water level, and the second detection element is used to identify the magnetic part in the second float to detect the anti-overflow water level.

[0016] The vertical rod is fixed with a first positioning baffle, a second positioning baffle and a third positioning baffle in sequence from bottom to top, the first positioning baffle and the second positioning baffle are respectively located on the upper and lower sides of the first float, the third positioning baffle is located above the second positioning baffle and below the second float, and the first positioning baffle, the second positioning baffle and the third positioning baffle are all set to be metal baffles with a thickness of 0.5-1mm.

[0017] Due to the adoption of the above technical solution, the technical effects achieved by this application are:

[0018] 1. In the water tank provided in the present application, a water level detection device is arranged inside the tank body, and the water level detection device is used to detect at least the final target water level and the anti-overflow water level. The final target water level can be set as a high water level for cutting off water addition. A water inlet pipe is installed on the side of the tank body, and the water inlet pipe can be connected to the instant heating body of the air conditioner and heat all-in-one machine so that the instant heating body can transport hot water into the water tank through the water inlet pipe, wherein the water inlet end of the water inlet pipe is higher than the final target water level to prevent the water from flowing back through the water inlet pipe when water is added to the final target water level. In addition, the water inlet pipe The water outlet is lower than the final target water level, so that the water outlet is as far away from the final target water level as possible, which helps to reduce the risk of water discharged from the water outlet splashing onto the detection element of the water level detection device used to detect the final target water level. Moreover, when the water is about to reach the final target water level, the liquid surface will submerge the water outlet in advance, and the water outlet will discharge water below the liquid surface, which can prevent the water discharged from the water outlet from colliding with the liquid surface and causing water splashing, thereby further reducing the risk of water splashing onto the detection element of the water level detection device used to detect the final target water level. Therefore, by making the water outlet lower than the final target water level, the risk of the detection element of the water level detection device used to detect the final target water level coming into contact with water in advance and being triggered by mistake during the water addition process is effectively reduced, ensuring that the water tank can be stably and normally filled with water to the preset water level, thereby improving the user experience of the all-in-one heat and water purifier.

[0019] 2. As a preferred embodiment of the present application, the water level detection device is also used to detect the intermediate target water level. The intermediate target water level can be set to the middle water level. The water outlet is flush with or lower than the intermediate target water level, thereby effectively increasing the distance between the water outlet and the final target water level and reducing the risk of splashing onto the detection element of the water level detection device used to detect the final target water level during drainage at the water outlet.

[0020] 3. As a preferred embodiment of the present application, since the water inlet end is higher than the final target water level and lower than the anti-overflow water level, the connection position between the water inlet pipe and the box body is as far away from the top edge of the box body as possible, so as to provide sufficient avoidance space for the welding of the top and side surfaces of the box body; the numerical ratio of the difference in height between the anti-overflow water level and the final target water level to the cross-sectional area of ​​the water tank is 1.25-5.5, so that this part of the space between the anti-overflow water level and the final target water level has a short and fat structure as a whole, avoiding the path of the water inlet pipe in this part of the space becoming longer due to the space being too large, which helps to reduce heat loss when water flows through the water inlet pipe. At the same time, the reduction of this part of the space also helps to slow down the speed at which heat diffuses outward through this part of the space, thereby improving the overall thermal insulation effect of the water tank.

[0021] 4. As a preferred embodiment of the present application, the water inlet end extends horizontally and the water outlet end extends vertically, so that the water inlet pipe is L-shaped as a whole, which makes the overall structure of the water inlet pipe simple and easy to form into a water tank. The water inlet end extends horizontally to facilitate connection with upstream water channel components and ensure the sealing of the connection position. The water outlet end extends vertically to achieve vertical downward water discharge, reducing the risk of water splashing toward the water level detection device on one side during the water discharge process.

[0022] 5. As a preferred embodiment of the present application, an exhaust pipe is installed on the side of the tank body so that the steam generated by the hot water in the water tank can be discharged through the exhaust pipe. The anti-overflow level of the water level detection device plays the first level of overflow protection. In the process of adding water to the water tank, when the anti-overflow level detection fails, the exhaust pipe plays a drainage role. Because the air inlet end of the exhaust pipe is higher than the anti-overflow level, when the water in the water tank exceeds the anti-overflow level and continues to rise, it will be discharged from the exhaust pipe to avoid the water tank from cracking due to excessive water addition. Therefore, the exhaust pipe plays the second level of overflow protection function, that is, the water tank has multiple overflow protections, including program protection based on the water level detection device and physical structure protection based on the exhaust pipe.

[0023] 6. As a preferred embodiment of the present application, the air inlet end extends vertically and the air outlet end extends horizontally, so that the exhaust pipe is L-shaped as a whole, which makes the overall structure of the exhaust pipe simple and easy to form the water tank. The air outlet end extends horizontally to facilitate connection with downstream components and ensure the sealing of the connection position; the air outlet end is not higher than the anti-overflow level, so that the connection position of the exhaust pipe and the box body is as far away from the top edge of the box body as possible, and sufficient avoidance space is provided for welding of the top and side surfaces of the box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 A cross-sectional view of a water tank provided in an embodiment of the present application.

[0026] List of parts and reference numerals:

[0027] 1 cabinet;

[0028] 2 water level detection device, 21 vertical rod, 221 first float, 222 second float, 223 third float, 224 fourth float, 231 first positioning baffle, 232 second positioning baffle, 233 third positioning baffle, 234 fourth positioning baffle, 235 fifth positioning baffle, 236 sixth positioning baffle;

[0029] 3 water inlet pipe, 31 water inlet end, 32 water outlet end;

[0030] 4 exhaust pipe, 41 air inlet end, 42 air outlet end. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0033] In addition, in the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "lateral", "longitudinal", etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0034] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0036] In the embodiment of the present application, a water tank is provided. For the convenience of explanation and understanding, the following contents provided in the present application are all described based on the illustrated product structure. Of course, those skilled in the art can understand that the above structure is only used as a specific example and schematic description, and cannot constitute a specific limitation on the technical solution provided in the present application.

[0037] Reference Figure 1 As shown, a water tank provided in the present application includes a tank body 1 and a water level detection device 2 installed in the tank body 1, wherein the water level detection device 2 is at least used to detect a final target water level and an anti-overflow water level, wherein the anti-overflow water level is higher than the final target water level, and a water inlet pipe 3 is installed on the side of the tank body 1, wherein the water inlet pipe 3 has a water inlet end 31 located on the outside of the tank body 1 and a water outlet end 32 located on the inside of the tank body 1, wherein the water inlet end 31 is higher than the final target water level, and the water outlet end 32 is lower than the final target water level.

[0038] The water tank provided in this application can be applied to a water-purifying and heat-integrated machine as a hot water insulation storage device connected to the downstream of the instant heating body of the water-purifying and heat-integrated machine. A water level detection device 2 is arranged in the box body 1. The water level detection device 2 is used to detect at least the final target water level and the anti-overflow water level. The final target water level can be set as the high water level for cutting off the water addition. Figure 1 In the figure, the dotted line Z is schematically used to represent the anti-overflow water level, and the dotted line H is used to represent the final target water level. When water is added to the box body 1 to the final target water level, the high water level detection element of the water level detection device 2 sends a signal to stop adding water. The anti-overflow water level is used to protect when the liquid level is higher than the final target water level. A water inlet pipe 3 is installed on the side of the box body 1. The water inlet pipe 3 can be connected to the instant heating body of the air conditioner and heat all-in-one machine so that the instant heating body can transport hot water into the water tank through the water inlet pipe 3. Among them, the water inlet end 31 of the water inlet pipe 3 is higher than the final target water level, so as to prevent the water from flowing back through the water inlet pipe 3 when water is added to the final target water level. In addition, the water outlet end 32 of the water inlet pipe 3 is lower than the final target water level, so that the water outlet end 32 is as far away from the final target water level as possible, which helps to reduce the risk of water discharged from the water outlet end 32 splashing onto the detection element of the water level detection device 2 for detecting the final target water level. Moreover, when the water is about to reach the final target water level, the liquid surface will submerge the water outlet end 32 in advance, and the water outlet end 32 will discharge water below the liquid surface, which can prevent the water discharged from the water outlet end 32 from colliding with the liquid surface and causing water splashing, thereby further reducing the risk of water splashing onto the detection element of the water level detection device 2 for detecting the final target water level. Therefore, by making the water outlet end 32 lower than the final target water level, the risk of the detection element of the water level detection device 2 for detecting the final target water level coming into contact with water in advance and being triggered by mistake during the water addition process is effectively reduced, ensuring that the water tank can be stably and normally filled with water to the preset water level, thereby improving the user experience of the all-in-one heat and water purifier.

[0039] As a preferred implementation of the present application, Figure 1 As shown, the water level detection device 2 is also used to detect an intermediate target water level, which is lower than the final target water level, and the water outlet 32 ​​is flush with or lower than the intermediate target water level. Figure 1 In the embodiment in which the dotted line M schematically represents the intermediate target water level and the water outlet 32 ​​is lower than the intermediate target water level, it can be understood by those skilled in the art that the intermediate target water level can be set to the middle water level, and the water outlet 32 ​​is flush with or lower than the intermediate target water level, which effectively increases the distance between the water outlet 32 ​​and the final target water level, and reduces the risk of splashing the detection element of the water level detection device 2 used to detect the final target water level during the drainage process of the water outlet 32. In particular, for the heat and water purifier, in order to prevent the water level from being too low and the water output of the whole machine from being too large, which may cause the water in the water tank to be drained, water is generally added when the water level in the water tank is pumped to the middle water level, so the liquid level in the water tank will not be lower than the middle water level in most cases. Therefore, the water outlet 32 ​​of the water inlet pipe 3 is flush with or lower than the final target water level, so that the water outlet 32 ​​is basically always below the liquid level, and splashing of water is prevented when adding water.

[0040] In a preferred embodiment, Figure 1 As shown, the water inlet end 31 is lower than the anti-overflow water level, and the ratio of the height difference between the anti-overflow water level and the final target water level to the cross-sectional area of ​​the water tank is 1.25-5.5. Usually, the box body 1 is a structure welded by a plate body, and by making the water inlet end 31 lower than the anti-overflow water level, the connection position of the water inlet pipe 3 and the box body 1 is as far away from the top edge of the box body 1 as possible, thereby providing sufficient avoidance space for welding the top and side surfaces of the box body 1. By making the height difference between the anti-overflow water level and the final target water level ( Figure 1 The numerical ratio of the difference between Z and H (in meters) to the cross-sectional area of ​​the water tank (in square meters) is 1.25-5.5, preferably 2, 3, 4, 5, etc., so that this part of the space between the anti-overflow level and the final target water level has a short and fat structure as a whole, avoiding the space being too large and making the path of the water inlet pipe in this part of the space longer, which helps to reduce the heat loss when the water flows through the water inlet pipe. At the same time, the reduction of this part of the space also helps to slow down the speed at which heat diffuses outward through this part of the space, thereby improving the overall thermal insulation effect of the water tank.

[0041] In a preferred embodiment, the numerical ratio of the difference in height between the anti-overflow water level and the final target water level to the preset error value of the water level detection device is 4-13, preferably 4, 5, 6, 7, 8, 9, 10, 11, 12, 13. It can be understood by those skilled in the art that, in the design process of the water level detection device, a preset error value is usually set for each detected target water level, and this error value is usually 1-2mm. For example, taking the standard high water level as 50mm as an example, the water level when actually triggered may be between 49-51mm. By making the difference in height between the anti-overflow water level and the final target water level ( Figure 1 The difference between Z and H in the figure) is 4-13 to the preset error value of the water level detection device, which prevents the distance between the anti-overflow level and the final target water level from being too small, provides sufficient space for the setting of the water inlet end, and makes the water inlet end significantly higher than the final target water level and significantly lower than the anti-overflow level.

[0042] In a preferred embodiment, in order to better detect the water level, the water level detection device 2 can also be used to detect the initial target water level. Figure 1 In the figure, the dotted line L schematically represents the initial target water level, and the initial target water level can be set to a low water level so that the lowest liquid level in the water tank cannot be lower than the initial target water level.

[0043] As a preferred embodiment, Figure 1 As shown, the water inlet end 31 extends horizontally and the water outlet end 32 extends vertically, so that the water inlet pipe 3 is in an L-shaped structure as a whole. It can be understood by those skilled in the art that by making the water inlet pipe 3 in an L-shaped structure, the overall structure of the water inlet pipe 3 is simple, and it is easy to form a water tank. The water inlet end 31 extends horizontally to facilitate connection with upstream waterway components and ensure the sealing of the connection position. The water outlet end 32 extends vertically to achieve vertical downward water discharge, reducing the risk of water splashing toward the water level detection device 2 on one side during the water discharge process.

[0044] As a preferred implementation of the present application, Figure 1As shown, an exhaust pipe 4 is installed on the side of the box body 1, and the exhaust pipe 4 has an air inlet end 41 located on the inner side of the box body 1 and an air outlet end 42 located on the outer side of the box body 1, and the air inlet end 41 extends upward and is higher than the anti-overflow water level. It can be understood by those skilled in the art that the exhaust pipe 4 is installed on the side of the box body 1 so that the steam generated by the hot water in the water tank can be discharged through the exhaust pipe 4. The anti-overflow water level of the water level detection device 2 plays the first level of overflow protection. In the process of adding water to the water tank, when the anti-overflow water level detection fails, the exhaust pipe 4 plays a drainage role. Because the air inlet end 41 of the exhaust pipe 4 is higher than the anti-overflow water level, when the water in the water tank exceeds the anti-overflow water level and continues to rise, it is discharged from the exhaust pipe 4 to prevent the water tank from being cracked due to excessive water addition. Therefore, the exhaust pipe 4 plays the second level of overflow protection function, that is, the water tank has multiple overflow protections, including program protection based on the water level detection device 2 and physical structure protection based on the exhaust pipe 4.

[0045] As a preferred embodiment, Figure 1 As shown, the air inlet end 41 extends vertically and the air outlet end 42 extends horizontally, so that the exhaust pipe 4 is in an L-shaped structure as a whole, and the air outlet end 42 is not higher than the anti-overflow level. By making the exhaust pipe 4 in an L-shaped structure as a whole, the exhaust pipe 4 has a simple overall structure and is easy to form the water tank. The air outlet end 42 extends horizontally to facilitate connection with downstream components and ensure the sealing of the connection position; the air outlet end 42 is not higher than the anti-overflow level, so that the connection position between the exhaust pipe 4 and the box body 1 is as far away from the top edge of the box body 1 as possible, and sufficient avoidance space is provided for welding the top surface and side surfaces of the box body 1.

[0046] The present application does not specifically limit the connection method between the water inlet pipe 3, the exhaust pipe 4 and the housing 1. As a preferred embodiment, the water inlet pipe 3 and the exhaust pipe 4 can be integrally formed on the housing 1. For example, the housing 1, the water inlet pipe 3 and the exhaust pipe 4 can be integrally formed by a mold; for another example, the housing 1, the water inlet pipe 3 and the exhaust pipe 4 can be integrally formed by stretching. Of course, the water inlet pipe 3, the exhaust pipe 4 and the housing 1 can also be integrally formed by other suitable methods. As another preferred embodiment, the water inlet pipe 3 and the exhaust pipe 4 can be welded and connected to the housing 1 respectively, so that the housing 1 can obtain better sealing performance, reduce the risk of water leakage at the welding positions of the water inlet pipe 3 and the exhaust pipe 4 and the housing 1, and also help to improve the structural strength of the housing 1, reduce the number of parts, and make the water tank as a whole lighter and simpler.

[0047] As a preferred implementation of the present application, Figure 1As shown, the water level detection device 2 includes a vertical rod 21 vertically inserted into the water tank, and a first float 221 and a second float 222 which are floatably arranged on the vertical rod 21 from bottom to top. A first detection element and a second detection element are arranged in the vertical rod 21. The first detection element is used to identify the magnetic part in the first float 221 to detect the final target water level, and the second detection element is used to identify the magnetic part in the second float 222 to detect the anti-overflow water level. In this embodiment, the water level detection device 2 detects the corresponding target water level by identifying and cooperating with the detection element and the magnetic part in the float, and has a simple structure and low cost.

[0048] Furthermore, the vertical rod 21 is fixedly provided with a first positioning baffle 231, a second positioning baffle 232 and a third positioning baffle 233 in sequence from bottom to top. The first positioning baffle 231 and the second positioning baffle 232 are respectively located on the upper and lower sides of the first floating ball 221, and the third positioning baffle 233 is located above the second positioning baffle 232 and below the second floating ball 222. The first positioning baffle 231, the second positioning baffle 232 and the third positioning baffle 233 are all set to be metal baffles with a thickness of 0.5-1mm. The first floating ball 221 is limited by the first positioning baffle 231 and the second positioning baffle 232 to float up and down along the vertical rod 21, and the third positioning baffle 233 is used to limit the distance that the second floating ball 222 can float up and down along the vertical rod 21. The baffle is a metal baffle of 0.5-1mm, which is relatively small in thickness. It is thin in thickness and has a large contact area while ensuring strength, so that the floating balls are not adhered, and the distance between the floating balls can be minimized.

[0049] For the embodiment in which the aforementioned water level detection device 2 is also used to detect the intermediate target water level and the initial target water level, a floating third float 223 and a fourth float 224 can also be mounted on the vertical rod 21, the third float 223 is located below the first float 221, and the fourth float 224 is located below the third float 223. A third detection element and a fourth detection element are also provided in the vertical rod 21. The third detection element is used to identify the magnetic part in the third float 223 to detect the intermediate target water level, and the fourth detection element is used to identify the magnetic part in the fourth float 224 to detect the initial target water level. In addition, the vertical rod 21 is fixed with a fourth positioning block 234, a fifth positioning block 235 and a sixth positioning block 236 in sequence from bottom to top. The fourth positioning block 234 is located above the fourth float 224 to limit the distance that the fourth float 224 floats up and down along the vertical rod 21. The fifth positioning block 235 and the sixth positioning block 236 are respectively located on both sides of the third float 223 to limit the distance that the third float 223 floats up and down along the vertical rod 21.

[0050] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0051] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0052] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A water tank, It is characterized in that It includes a box body and a water level detection device installed in the box body, the water level detection device is at least used to detect the final target water level and the anti-overflow water level, the anti-overflow water level is higher than the final target water level, a water inlet pipe is installed on the side of the box body, the water inlet pipe has a water inlet end located on the outside of the box body and a water outlet end located on the inside of the box body, the water inlet end is higher than the final target water level, and the water outlet end is lower than the final target water level.

2. The water tank according to claim 1, It is characterized in that The water level detection device is also used to detect an intermediate target water level, which is lower than the final target water level, and the water outlet is flush with or lower than the intermediate target water level.

3. The water tank according to claim 1, It is characterized in that The water inlet end is lower than the anti-overflow water level, and the ratio of the height difference between the anti-overflow water level and the final target water level to the cross-sectional area of ​​the water tank is 1.25-5.

5.

4. The water tank according to claim 3, It is characterized in that The numerical ratio of the difference between the height difference between the anti-overflow water level and the final target water level to the preset error value of the water level detection device is 4-13.

5. The water tank according to any one of claims 1 to 4, It is characterized in that The water inlet end extends horizontally and the water outlet end extends vertically so that the water inlet pipe is in an L-shaped structure as a whole.

6. The water tank according to claim 1, It is characterized in that An exhaust pipe is installed on the side of the box body. The exhaust pipe has an air inlet end located inside the box body and an air outlet end located outside the box body. The air inlet end extends upward and is higher than the anti-overflow water level.

7. The water tank according to claim 6, It is characterized in that The air inlet end extends vertically and the air outlet end extends horizontally so that the exhaust pipe is in an L-shaped structure as a whole, and the air outlet end is not higher than the anti-overflow water level.

8. The water tank according to claim 6, It is characterized in that The water inlet pipe and the exhaust pipe are respectively integrally formed with the box body; Alternatively, the water inlet pipe and the exhaust pipe are respectively connected to the box body by welding.

9. The water tank according to claim 1, It is characterized in that The water level detection device includes a vertical rod vertically inserted into the water tank and a first float and a second float floated on the vertical rod from bottom to top in sequence. A first detection element and a second detection element are provided in the vertical rod. The first detection element is used to identify the magnetic part in the first float to detect the final target water level, and the second detection element is used to identify the magnetic part in the second float to detect the anti-overflow water level.

10. The water tank according to claim 9, It is characterized in that The vertical rod is fixed with a first positioning baffle, a second positioning baffle and a third positioning baffle in sequence from bottom to top, the first positioning baffle and the second positioning baffle are respectively located on the upper and lower sides of the first float, the third positioning baffle is located above the second positioning baffle and below the second float, and the first positioning baffle, the second positioning baffle and the third positioning baffle are all set to be metal baffles with a thickness of 0.5-1mm.

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