CN217696091U - Liquid storage device with liquid level detection function and liquid outlet device - Google Patents

Abstract

The application provides a take liquid level detection's stock solution device and play liquid device. The liquid storage device comprises a liquid storage tank, a liquid level detection pipe and a distance measurement assembly. The liquid level detection pipe is arranged outside the liquid storage tank and is communicated with the liquid storage tank; the range finding subassembly obtains the module including floating detection piece, range finding sensor and liquid level, and it is intraductal that the liquid level detection is located to float detection piece, and the range finding sensor is located the liquid level detection pipe to set up relatively with floating detection piece, in order to obtain a corresponding distance signal, the liquid level obtains the stock solution parameter that the module is used for confirming the liquid reserve tank according to the distance signal. Through setting up the liquid level detection pipe outside the liquid reserve tank, can need not occupy the capacity of liquid reserve tank like this, the installation between liquid level installation pipe and the liquid reserve tank of being convenient for moreover also is favorable to the installation of range finding subassembly simultaneously, range finding sensor can accurately and obtain the stock solution parameter rapidly according to its self and float the distance signal between the detection piece.

Description

Liquid storage device with liquid level detection function and liquid outlet device

Technical Field

The application relates to the technical field of liquid outlet equipment, in particular to a liquid storage device with a liquid level detection function and a liquid outlet device.

Background

At present, liquid outlet devices such as coffee machines, water dispensers, electric water bottles and the like are widely applied to the life of people. The liquid outlet device generally comprises a liquid storage device, and the liquid storage device has functions of liquid storage and liquid detection.

The liquid detection of most current stock solution devices detects or detects visually through detection piece such as tongue tube, and detection piece isotructure among the present stock solution device can occupy the capacity of liquid reserve tank usually, and the installation of being inconvenient for moreover, can only detect the state that has liquid in the liquid reserve tank through the tongue tube, can't detect concrete liquid volume in the liquid reserve tank, play liquid measure isoparametric. The volume scales are marked on the transparent pipeline communicated with the liquid storage tank by a small number of liquid storage devices, and the scales corresponding to the liquid level can be observed by visual observation under the condition of sufficient light, so that the liquid amount in the current liquid storage tank can be obtained, but the mode is greatly influenced by ambient light, and when the light is dark, the liquid amount cannot be observed by the user.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a liquid outlet device and a liquid storage device with liquid level detection, so as to improve at least one technical problem.

The embodiment of the application realizes the aim through the following technical scheme.

In a first aspect, an embodiment of the present application provides a liquid storage device with liquid level detection. The liquid storage device comprises a liquid storage tank, a liquid level detection pipe and a distance measurement assembly. The liquid level detection pipe is arranged outside the liquid storage tank and is communicated with the liquid storage tank; the range finding subassembly obtains the module including floating detection piece, range finding sensor and liquid level, and it is intraductal that the liquid level detection is located to float detection piece, and the range finding sensor is located the liquid level detection pipe to set up relatively with floating detection piece, in order to obtain a corresponding distance signal, the liquid level obtains the stock solution parameter that the module is used for confirming the liquid reserve tank according to the distance signal.

In a second aspect, an embodiment of the present application further provides a liquid outlet device, where the liquid outlet device includes a liquid outlet portion and the liquid storage device, and the liquid outlet portion is communicated with the liquid storage device.

The application provides a play liquid device and take stock solution device of liquid level detection, through setting up the liquid level detection pipe outside the liquid reserve tank, can not occupy the capacity of liquid reserve tank like this, and the installation between liquid level installation pipe and the liquid reserve tank of being convenient for, also be favorable to the installation of range finding subassembly simultaneously, and simultaneously, range finding sensor is according to its self and float the distance signal between the detection piece, can accurately and rapidly obtain the stock solution parameter, for example, can obtain the liquid volume in the liquid reserve tank through the distance signal, go out the liquid volume, go out liquid volume parameters such as liquid volume with in liquid flow rate and the statistics cycle.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a liquid outlet device provided in an embodiment of the present application.

Fig. 2 is a schematic structural view of a liquid storage device in the liquid outlet device shown in fig. 1 in a disassembled state.

Fig. 3 is a schematic structural diagram of another liquid storage device provided in an embodiment of the present application in a disassembled state.

Fig. 4 is a schematic longitudinal sectional view of the liquid storage device shown in fig. 2.

Fig. 5 is a schematic longitudinal sectional view of another liquid storage device provided in an embodiment of the present application.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, the embodiment of the present application provides a liquid outlet device 10, and the liquid outlet device 10 may be a coffee maker, a water dispenser, an electric water bottle, and the like. The following description will be made by taking the liquid outlet device 10 as an electric water bottle as an example:

the liquid outlet device 10 comprises a liquid outlet part 11 and a liquid storage device 12, wherein the liquid outlet part 11 is communicated with the liquid storage device 12. The liquid storage device 12 is used for storing liquid, and the liquid outlet portion 11 is used for allowing the liquid in the liquid storage device 12 to flow out, and may further have functions of heating and/or cooling.

In this embodiment, the liquid outlet device 10 further includes a control panel 13, the control panel 13 is electrically connected to the liquid storage device 12, the control panel 13 is configured to display liquid storage parameters of the liquid storage device 12, the liquid storage parameters may include parameters such as liquid amount, liquid outlet flow rate, and liquid consumption amount in a statistical period, for example, the liquid outlet flow rate is obtained according to the liquid outlet amount in unit time. The control panel 13 has control and display functions, and may be a touch display screen.

Referring to fig. 1, in the present embodiment, the liquid outlet portion 11 includes a pump 111 and a thermostat 112, and the pump 111 and the thermostat 112 are communicated with each other. The thermostat 112 serves to regulate the temperature of the liquid, and the thermostat 112 has a cooling and/or heating function, for example, it can cool or heat the liquid. The pump 111 and the thermostat 112 are electrically connected to the control panel 13, and a user can adjust the liquid feeding speed of the pump 111 and the heating temperature or the cooling temperature of the thermostat 112 through the control panel 13.

In this embodiment, the pump 111 may be a water pump, and the pump 111 is used to pump the liquid in the liquid storage device 12 into the thermostat 112 for temperature regulation. The pump feeder 111 is provided with a pumping channel 1111, the temperature regulator 112 is provided with a liquid outlet channel 1121, and the liquid outlet channel 1121 can be communicated with the liquid storage device 12 through the pumping channel 1111. In the liquid outlet process, when the pump 111 can pump the liquid in the liquid storage device 12 into the pumping channel 1111, the pumped liquid passes through the liquid outlet channel 1121 of the temperature regulator 112, and the temperature regulator 112 can instantly refrigerate or heat the liquid, and the heated or refrigerated liquid flows out from the outlet of the liquid outlet channel 1121.

Referring to fig. 1, in the present embodiment, the liquid storage device 12 includes a liquid storage tank 121, a liquid level detection tube 122 and a distance measurement assembly 123. The distance measuring assembly 123 is arranged on the liquid level detecting pipe 122, and the liquid level detecting pipe 122 is communicated with the liquid storage tank 121.

Referring to fig. 1 and 2, in the present embodiment, the liquid storage tank 121 has a height direction H, and when the amount of liquid in the liquid storage tank 121 increases, the liquid level in the liquid storage tank 121 rises along the height direction H. The liquid storage tank 121 is provided with a water outlet portion 1211, the water outlet portion 1211 can be arranged at the bottom of the liquid storage tank 121, the liquid storage tank 121 is communicated with the liquid level detection pipe 122 through the water outlet portion 1211, and the liquid in the liquid storage tank 121 can flow into the liquid level detection pipe 122 through the water outlet portion 1211.

In the present embodiment, the liquid level detection pipe 122 is provided outside the liquid storage tank 121, and the liquid level detection pipe 122 includes a liquid level pipe 1221 and a connection pipe 1222 and communicates with the liquid storage tank 121. Through setting up liquid level detection pipe 12 outside liquid reserve tank 121, liquid level detection pipe 12 can need not occupy the capacity of liquid reserve tank 121 like this, and the liquid level installation pipe 12 of being convenient for moreover carries out quick installation with liquid reserve tank 121, also is favorable to range finding subassembly 123 to install from the outside of liquid reserve tank 121 simultaneously.

In this embodiment, the liquid level tube 1221 and the liquid storage tank 121 are substantially arranged side by side, and the liquid level tube 1221 and the liquid storage tank 121 are located on the same side of the connecting tube 1222. The liquid level pipe 1221 and the liquid storage tank 121 are communicated through the connecting pipe 1222, so that the liquid level pipe 1221 and the liquid storage tank 121 jointly form a communicating vessel structure through the connecting pipe 1222, and the liquid level height of the liquid level pipe 1221 and the liquid storage tank 121 can be equal to the same height.

Specifically, in this embodiment, the connection tube 1222 may be substantially of a hollow plate structure, the connection tube 1222 is provided with a water inlet 1223, the water inlet 1223 is communicated with the liquid level tube 1221, and the water inlet 1223 may be disposed on a top plate of the connection tube 1222. When the tank 121 is attached to the connecting tube 1222, the water outlet 1211 communicates with the water inlet 1223. The water outlet 1211 and the water inlet 1223 may be connected by plugging, for example, the water outlet 1211 may be a water nozzle, and the water nozzle is directly plugged into the water inlet 1223 and is connected to the water inlet 1223 in a sealing manner. In addition, the connecting tube 1222 is further provided with a water outlet 1224, and the water outlet 1224 may be disposed on the bottom plate of the connecting tube 1222 or adjacent to the bottom plate of the connecting tube 1222, so as to facilitate substantially all of the liquid in the liquid storage tank 121 and the connecting tube 1222 to flow out. The water outlet 1224 communicates with the water inlet 1223, and the water outlet 1224 is used to communicate with the liquid outlet 11.

In this embodiment, the liquid level pipe 1221 may be substantially a straight pipe structure, the liquid level pipe 1221 includes a first end 1226 and a second end 1227 opposite to each other, the first end 1226 and the second end 1227 are respectively located at two ends of the liquid level pipe 1221 along the height direction H, the first end 1226 is communicated with the connecting pipe 1222, and the first end 1226 may be connected to one end of the connecting pipe 1222 in the length direction thereof. Exemplarily, liquid level body 1221 is angular connection with connecting body 1222, and the contained angle that forms between the two can be about 90, and liquid level body 1221 can roughly constitute "L" type structure with connecting body 1222, and like this when connecting body 1222 level was placed, when liquid level body 1221 and liquid reserve tank 121 all roughly followed vertical setting, guaranteed that liquid level body 1221 can be as high as the liquid level height of liquid reserve tank 121. The first end 1226 serves as a top end of the liquid level pipe body 1221, and the second end 1227 serves as a bottom end of the liquid level pipe body 1221.

In some embodiments, as shown in FIG. 3, the connection tube 1222 can be omitted, and the liquid level detection tube 122 includes only the liquid level tube 1221. Illustratively, the liquid level tube body 1221 is disposed alongside the liquid storage tank 121 and communicates with the liquid storage tank 121. Specifically, the water outlet 1211 is disposed on a sidewall of the reservoir 121 and is adjacent to a bottom of the reservoir 121. The liquid level pipe 1221 is provided with a water inlet 1223 and a water outlet 1224 at the same time, the water inlet 1223 and the water outlet 1224 are respectively arranged on two opposite sides of the liquid level pipe 1221, and the water inlet 1223 and the water outlet 1224 can be respectively arranged adjacent to the bottom of the liquid level pipe 1221. When the installation is performed, the water outlet 1211 and the water inlet 1223 of the liquid level pipe body 1221 can be directly connected in a quick manner by plugging.

Referring to fig. 2 and 4, in the present embodiment, the height of the liquid level detection tube 122 along the height direction H of the liquid storage tank 121 is greater than or equal to the height of the liquid storage tank 121. Therefore, when the liquid level in the liquid storage tank 121 is at the maximum height, the liquid level in the liquid level detection pipe 122 can also be at the same height as the maximum liquid level of the liquid in the liquid storage tank 121, so that the distance measurement assembly 123 can measure the maximum liquid level of the liquid storage tank 121.

In this embodiment, the liquid level detection tube 122 is further provided with an air hole 1225, the air hole 1225 can make the pressure in the liquid level detection tube 122 consistent with the external pressure, so that the liquid in the liquid storage tank 121 and the liquid in the liquid level detection tube 122 normally circulate, and meanwhile, the liquid level height in the liquid storage tank 121 and the liquid level height in the liquid level detection tube 122 are guaranteed to be equal to each other, and the liquid level height in the liquid level detection tube 122 measured by the measuring component 123 is also the liquid level height in the liquid storage tank 121.

In the present embodiment, the height of the airing hole 1225 in the height direction H of the reservoir 121 is greater than the maximum liquid level height of the reservoir 121. Specifically, the air hole 1225 is disposed at the top end (the second end 1227) of the liquid level detecting tube 122, and the height of the air hole 1225 along the height direction H of the liquid storage tank 121 is greater than the maximum liquid level height of the liquid storage tank 121. Therefore, when the liquid storage tank 121 is at the maximum liquid level height, the liquid level detection tube 122 is also at the maximum liquid level height, and therefore the maximum liquid level height of the liquid level detection tube 122 is not higher than the height of the air holes 1225, so that the liquid is prevented from flowing out of the air holes 1225. In addition, the air hole 1225 may further be provided with a waterproof air-permeable film, and the air hole 1225 is sealed by the waterproof air-permeable film, so that the liquid level detection tube 122 can be ensured to be communicated with the outside, and the liquid in the liquid level detection tube 122 can not flow out of the air hole 1225.

Referring to fig. 1 and 4, in the present embodiment, the distance measuring assembly 123 includes a floating detecting element 1231, a distance measuring sensor 1232 and a liquid level obtaining module 1237, wherein the floating detecting element 1231 is floatably disposed in the liquid level detecting tube 122, and the distance measuring sensor 1232 is disposed in the liquid level detecting tube 122 and is opposite to the floating detecting element 1231. The distance measuring sensor 1232 is configured to obtain a corresponding distance signal, where the "distance signal" refers to a distance between the floating detecting element 1231 and the distance measuring sensor 1232, and the liquid level obtaining module 1237 is configured to determine a liquid storage parameter of the liquid storage tank 121 according to the distance signal. It should be noted that the liquid level acquisition module 1237 may be a separate device or it may be integrated directly into the control panel 13.

In this embodiment, the ranging sensor 1232 may be an optical ranging sensor such as an infrared sensor, a laser sensor, or other optical sensor, and the ranging sensor 1232 includes an optical emitter 1233 and an optical receiver 1234. The optical transmitter 1233 is configured to emit a probe light for ranging, the optical receiver 1234 is configured to receive the probe light reflected from the floating detection member 1231, and the ranging sensor 1232 can obtain a distance signal by a time difference between the emission of the probe light and the reception of the probe light. The floating detection member 1231 includes a reflection sheet 1235 and a floating body 1236, and the reflection sheet 1235 is provided on the floating body 1236 and is disposed opposite to the distance measuring sensor 1232.

When liquid is in the liquid storage tank 121, the liquid in the liquid storage tank 121 flows into the liquid level pipe 1221 through the connection pipe 1222, and since the liquid storage tank 121 and the liquid level pipe 1221 form a communicating vessel structure, the liquid level height in the liquid storage tank 121 is equal to the liquid level height in the liquid level pipe 1221, and the floating detection piece 1231 floats on the liquid level of the liquid level pipe 1221. The distance measuring sensor 1232 can reflect the detection light back to the light receiver 1234 through the reflection sheet 1235, the distance measuring sensor 1232 can obtain a distance signal through a time difference between the detection light and the detection light, the liquid level obtaining module 1237 is used for obtaining a liquid storage parameter in the liquid storage tank 121 according to the distance signal, and the control panel 13 can display the liquid storage parameter.

In some embodiments, the optical receiver 1234 may also be disposed on the floating detection member 1231, and at this time, the optical emitter 1233 of the ranging sensor 1232 emits the detection light, and the detection light is transmitted to the optical receiver 1234 of the floating detection member 1231, so that the ranging sensor 1232 can obtain the distance signal according to the time from the detection light emitted by the optical emitter 1233 to the optical receiver 1234.

Referring to fig. 2 and 4, in the present embodiment, the distance measuring sensor 1232 is disposed on the second end 1227. Specifically, the liquid level pipe 1221 is provided with a liquid level channel 1228 and a light transmission portion 1229, the light transmission portion 1229 allows detection light emitted by the distance measuring sensor 1232 to pass through, the liquid level channel 1228 is communicated with the liquid storage tank 121, and the height of the liquid level channel 1228 in the height direction H is greater than or equal to the maximum liquid level height of the liquid storage tank 121. The floating detection piece 1231 is disposed in the liquid level channel 1228, the floating detection piece 1231 floats in the liquid level channel 1228 along with the height of the liquid in the liquid level pipe 1221, the light transmission portion 1229 is located between the second end 1227 and the liquid level channel 1228, and the light emitting side of the distance measurement sensor 1232 faces the light transmission portion 1229. The light-transmitting portion 1229 may be a solid light-transmitting structure or a light-transmitting through hole. When the liquid in the liquid level body 1221 reduces, float and detect piece 1231 and also descend along with the liquid level height, consequently, distance between measuring that the distance measuring sensor 1232 measures and float and detect piece 1231 and distance measuring sensor 1232 can increase, distance measuring sensor 1232 obtains distance signal, consequently, liquid level acquisition module 1237 can acquire the stock solution parameter in the liquid reserve tank 121 according to distance signal, for example can correspond different liquid level height according to the different distances between float and detect piece 1231 and the distance measuring sensor 1232, can obtain the liquid volume through the liquid level height, can obtain liquid volume and play liquid velocity of flow etc. in the unit interval through the change of liquid level height.

Referring to fig. 4, in the present embodiment, the second end 1227 is provided with a receiving portion 1230, and the distance measuring sensor 1232 is located in the receiving portion 1230. The accommodating portion 1230 may be disposed on the top surface of the second end 1227, the accommodating portion 1230 has an opening 1238, and the distance measuring sensor 1232 may be directly accommodated in the accommodating portion 1230 through the opening 1238, which is convenient for disassembly and replacement. The receptacle 1230 is a groove structure that may be recessed from a top surface of the second end 1227.

In the present embodiment, the accommodating portion 1230 and the liquid surface passage 1228 are separated by the light-transmitting portion 1229, the light-transmitting portion 1229 may be provided in the accommodating portion 1230, and may be a bottom structure of the accommodating portion 1230, and the light-transmitting portion 1229 may be a structure of light-transmitting glass, light-transmitting plastic, or the like. The containing part 1230 and the liquid level channel 1228 are separated from each other through the light-transmitting part 1229, so that liquid in the liquid level channel 1228 can be prevented from entering the containing part 1230, the ranging sensor 1232 can be completely separated from the liquid, the liquid is prevented from entering the ranging sensor 1232, the ranging sensor 1232 is prevented from being damaged due to water entering, and the service life of the ranging sensor 1232 is effectively prolonged.

In another embodiment, as shown in fig. 5, a ranging sensor 1232 is disposed at the connection tube 1222 in communication with the first end 1226. Exemplarily, the liquid storage device 12 further includes an installation portion 124, the installation portion 124 surrounds the cavity, the distance measuring sensor 1232 is disposed in the cavity of the installation portion 124, the installation portion 124 can be enclosed to form a closed cavity, the installation portion 124 can be a transparent structure, so that the installation portion 124 can separate the distance measuring sensor 1232 from the liquid, and the distance measuring sensor 1232 is prevented from being damaged by the liquid of the liquid level detection tube 122. The detection light emitted from the distance measuring sensor 1232 is transmitted to the floating detection member 1231 through the mounting portion 124, and the reflection sheet 1235 is provided on the surface of the floating body 1236 facing the distance measuring sensor 1232. Float and detect piece 1231 and float in the liquid level, when the liquid level height in the liquid level body 1221 reduces, float and detect piece 1231 and also descend thereupon, consequently, range sensor 1232 measures the distance that floats between detection piece 1231 and the range sensor 1232 and can reduce, and liquid level acquisition module 1237 can acquire the stock solution parameter in the liquid reserve tank 121 according to distance signal.

The utility model provides a go out liquid device 10 and take liquid storage device 12 of liquid level detection, through setting up liquid level detection pipe 122 outside liquid reserve tank 121, like this can need not occupy the capacity of liquid reserve tank 121, and be convenient for installation between liquid level detection pipe 122 and the liquid reserve tank 121, also be favorable to ranging subassembly 123's installation simultaneously, and simultaneously, ranging sensor 1232 is according to the distance signal between its self and the showy detection piece 1231, can accurately and rapidly obtain stock solution parameter, for example, can obtain the liquid volume in the liquid reserve tank 121 through the distance signal, go out the liquid volume, go out liquid flow rate and statistics cycle in stock solution parameter such as liquid volume, consequently, the liquid reserve tank 121 of whole liquid storage device 12 not only has great capacity, it can provide corresponding stock solution parameter to the user automation through control panel 13 to go out liquid device 10.

In this application, the terms "mounted," "connected," and the like are to be construed broadly unless otherwise explicitly stated or limited. For example, the connection can be fixed, detachable or integrated; may be a mechanical connection; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected through the inside of two elements, or they may be connected only by surface contact or through surface contact of an intermediate medium. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "first," "second," and the like are used merely for distinguishing between descriptions and not intended to imply or imply a particular structure. The description of the term "some embodiments" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this application, the schematic representations of the terms used above are not necessarily intended to be the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples and features of the various embodiments or examples described in this application can be combined and combined by those skilled in the art without being mutually inconsistent.

The above embodiments are only for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims (10)

1. The utility model provides a take liquid level detection's stock solution device which characterized in that, stock solution device includes:

a liquid storage tank;

the liquid level detection pipe is arranged outside the liquid storage tank and is communicated with the liquid storage tank;

the range finding subassembly, the range finding subassembly acquires the module including floating detection piece, range finding sensor and liquid level, it can locate floatably to float the detection piece in the liquid level detection pipe, range finding sensor locates the liquid level detection pipe, and with it sets up relatively to float the detection piece to acquire a corresponding distance signal, the liquid level acquires the module and is used for the basis distance signal confirms the stock solution parameter of liquid reserve tank.

2. A liquid storage device as claimed in claim 1, wherein the liquid level detection tube comprises a liquid level tube and a connection tube, the liquid level tube and the liquid storage tank are arranged side by side, the liquid level tube and the liquid storage tank are located on the same side of the connection tube, and the liquid level tube and the liquid storage tank are communicated through the connection tube.

3. The liquid storage device as claimed in claim 2, wherein the liquid level tube includes a first end and a second end opposite to each other, the first end is communicated with the connection tube, and the distance measuring sensor is disposed at the second end.

4. The liquid storage device as claimed in claim 3, wherein the liquid level tube body is provided with a liquid level channel and a light-transmitting portion, the floating detection member is disposed in the liquid level channel, the light-transmitting portion is located between the second end and the liquid level channel, and a light emitting side of the distance measuring sensor faces the light-transmitting portion.

5. The liquid storage device as claimed in claim 4, wherein the second end is provided with a receiving portion, the receiving portion has an opening, the receiving portion is separated from the liquid level channel by the light-transmitting portion, and the distance measuring sensor is located in the receiving portion.

6. A liquid storage device according to claim 3 wherein the distance measuring sensor is disposed at a location where the connection tube communicates with the first end.

7. The liquid storage device according to claim 1, wherein the liquid tank has a height direction, and a height of the liquid level detection pipe in the height direction is greater than or equal to a height of the liquid tank.

8. A liquid storage device as claimed in claim 7, wherein the liquid level detection tube is provided with a vent hole, and the height of the vent hole in the height direction is greater than the maximum liquid level height of the liquid storage tank.

9. A liquid outlet device, characterized by comprising a liquid outlet part and the liquid storage device as claimed in any one of claims 1 to 8, wherein the liquid outlet part is communicated with the liquid storage device.

10. The tapping device according to claim 9, characterized in that the tapping part comprises a pump feeder and a thermostat, the pump feeder is provided with a pumping channel, the thermostat is provided with a tapping channel, and the tapping channel is communicated with the liquid storage device through the pumping channel.

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