CN217155523U - Liquid level measuring device and electronic equipment - Google Patents

Abstract

The utility model relates to a liquid level measuring device and electronic equipment. The liquid level measuring device includes: the device comprises a shell, a pressure sensing device and a first air pipe; the first air pipe comprises a first end and a second end, the first end is located in the accommodating cavity, the second end and the pressure sensing device form a seal, and the pressure sensing device is used for measuring the pressure difference between the air pressure in the first air pipe and the air pressure in the external environment. Through utilizing pressure sensing device to record the pressure difference of casing inside atmospheric pressure and external environment atmospheric pressure, the liquid level of the inside liquid of casing has been reflected to the numerical value of this pressure difference, and then this liquid level measurement device can realize the accurate measurement to the liquid level, has avoided leading to the fact electronic equipment's damage because of the liquid level is low excessively.

Description

Liquid level measuring device and electronic equipment

Technical Field

The utility model relates to a liquid level measurement technical field, more specifically, the utility model relates to a liquid level measurement device and electronic equipment.

Background

Nowadays, an electric water heater has become a common household appliance in a user's home. The existing electric water heater cannot accurately measure the liquid level in the liquid tank, and when the liquid level is too low, the electric water heater cannot provide accurate liquid level information for users, so that the normal work of the electric water heater is influenced, and even great use risks are brought to the users.

Therefore, a new technical solution is needed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the present disclosure is to provide a new technical solution of a liquid level measuring device.

According to the utility model discloses an aspect provides a liquid level measuring device. The liquid level measuring device includes: the device comprises a shell, a pressure sensing device and a first air pipe; the first air pipe comprises a first end and a second end, the first end is located in the accommodating cavity, the second end and the pressure sensing device form a seal, and the pressure sensing device is used for measuring the pressure difference between the air pressure in the first air pipe and the air pressure in the external environment.

Optionally, the first air tube and the housing are integrally formed.

Optionally, the pressure sensing device is embedded in a side wall of the housing.

Optionally, a sealing ring is provided between the pressure sensing device and the second end.

Optionally, a communication part is formed on a side wall or a bottom of the housing, and the accommodating cavity and the first air pipe are communicated through the communication part.

Optionally, the measuring device further includes a flow restriction block, the flow restriction block is located in the communicating portion, the flow restriction block is connected with the side wall of the housing, and the flow restriction block divides the communicating portion into a first communicating portion and a second communicating portion.

Optionally, a second air pipe is configured in the side wall of the housing, and one end of the second air pipe is connected with the pressure sensing device, and the other end of the second air pipe is communicated with the external environment.

Optionally, the inner diameter of the first air tube increases from the middle to both ends.

Optionally, the pressure sensor further comprises a controller and an alarm device, the controller is respectively connected with the pressure sensing device and the alarm device, and the controller controls the alarm device to give an alarm under the condition that the pressure difference is zero.

According to a first aspect of the present invention, an electronic device is provided. The electronic equipment comprises the liquid level measuring device.

In the embodiment of the disclosure, the pressure difference between the air pressure inside the shell and the air pressure of the external environment is measured by using the pressure sensing device, the numerical value of the pressure difference reflects the liquid level of the liquid inside the shell, and then the liquid level measuring device can realize accurate measurement of the liquid level, thereby avoiding the damage to the electronic equipment caused by too low liquid level.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a first schematic view of a liquid level measurement device according to an embodiment of the present disclosure.

FIG. 2 is a second schematic view of a liquid level measurement device according to an embodiment of the present disclosure.

FIG. 3 is a schematic illustration of a liquid column blockage according to an embodiment of the present disclosure.

Description of reference numerals:

1. an accommodating cavity; 2. a first air pipe; 201. a first end; 202. a second end; 3. a gas column; 4. a second air pipe; 5. a pressure sensing device; 6. a flow limiting block; 601. a first communicating portion; 602. a second communicating portion; 7. and (5) sealing rings.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

According to one embodiment of the present disclosure, a liquid level measuring device is provided. As shown in fig. 1, the liquid level measuring apparatus includes: a housing, a pressure sensing device 5 and a first gas tube 2. The housing forms an accommodating cavity 1 inside. The first gas tube 2 comprises a first end 201 and a second end 202. The first end 201 is located in the accommodating cavity 1. The second end 202 forms a seal with the pressure sensing device 5. The pressure sensing device 5 is used for measuring the pressure difference between the air pressure inside the first air pipe 2 and the air pressure of the external environment.

The housing forms an accommodating cavity 1 inside. The containing cavity 1 is used for containing liquid. The first gas tube 2 comprises a first end 201 and a second end 202. The first end 201 is placed in the accommodation chamber 1. When liquid is injected into the accommodating cavity 1 and the liquid level reaches the first end 201, the first end 201 and the liquid in the accommodating cavity 1 form a seal. The second end 202 forms a seal with the pressure sensing device 5. The two ends of the first air pipe 2 are respectively sealed, and a sealed air column 3 is formed inside the first air pipe 2. The pressure of the closed gas column 3 is related to the liquid level of the liquid in the accommodating cavity 1.

In one example, the housing chamber 1 is filled with liquid through a liquid filling port. Under the condition that the liquid in the accommodating cavity 1 gradually increases, the liquid level in the accommodating cavity 1 gradually rises, and then the air pressure of the airtight air column 3 in the first air pipe 2 gradually increases. The air pressure in the first air tube 2 sensed by the pressure sensing means 5 is gradually increased.

The other side of the pressure sensing device 5 is in communication with the external environment. The external environment is an atmospheric environment or other environment where the liquid level measuring device is located, such as an enclosed space environment. The air pressure value of the external environment is usually a fixed value. In the case that the air pressure inside the first air pipe 2 gradually increases, the pressure difference between the air pressure inside the first air pipe 2 and the external environment air pressure also gradually increases.

At this time, the user can accurately judge the liquid level in the accommodating chamber 1 through the pressure difference value displayed by the pressure sensing device 5. And stopping injecting liquid under the condition that the pressure difference value reaches a full liquid preset value.

In another example, as shown in FIG. 2. The liquid is discharged from the accommodating cavity 1 through the liquid outlet. Under the condition that the liquid in the accommodating cavity 1 gradually decreases, the liquid level in the accommodating cavity 1 gradually decreases, and then the air pressure of the airtight air column 3 in the first air pipe 2 gradually decreases. The air pressure in the first air tube 2 sensed by the pressure sensing means 5 is gradually decreased.

In the case that the air pressure inside the first air pipe 2 is gradually reduced, the pressure difference between the air pressure inside the first air pipe 2 and the air pressure of the external environment is also gradually reduced.

Under the condition that the liquid level drops to the state that the liquid in the accommodating cavity 1 cannot form a seal with the first end 201 of the first air pipe 2, the first air pipe 2 is communicated with the external environment, and the pressure difference value displayed by the pressure sensing device 5 is 0. At this time, the user needs to inject liquid into the accommodating cavity 1.

The pressure difference between the air pressure inside the shell and the air pressure of the external environment can be accurately and timely measured by utilizing the pressure sensing device 5, and the numerical value of the pressure difference reflects the liquid level of the liquid inside the shell, so that the liquid level measuring device can accurately measure the liquid level. Under the condition that the numerical value of pressure difference is 0, can indicate the user in time annotate the liquid in holding chamber 1, avoided crossing the damage that causes electronic equipment because of the liquid level, simultaneously, also improved the security that the user used this electronic equipment.

For example, the pressure sensing device 5 may be a differential pressure sensor, but of course, other suitable devices for measuring a pressure difference are possible, and are not limited herein.

In one example, the first gas tube 2 and the housing are integrally formed.

For example, a first gas pipe 2 is formed on a side wall of the housing. The first air pipe 2 and the shell are integrally formed, so that the difficulty of the production process flow of the liquid level measuring device is reduced. Meanwhile, the first air pipe 2 is directly arranged on the side wall of the shell, so that the first air pipe 2 and the accommodating cavity 1 inside the shell can form good sealing, and the pressure difference value can be accurately measured through the pressure sensing device 5.

Of course, the first air tube 2 and the housing may be separately disposed, as long as the first end 201 of the first air tube 2 and the accommodating cavity 1 inside the housing form a seal, which is not limited herein.

In one example, the pressure sensing device 5 is embedded in a side wall of the housing.

The pressure sensing device 5 is embedded in the side wall of the housing, so that the pressure sensing device 5 can be accurately and firmly arranged at the second end 202 of the first air pipe 2, and the pressure sensing device 5 and the second end 202 of the first air pipe 2 form a good seal.

In addition, the pressure sensing device 5 is embedded in the side wall of the housing, so that the liquid can be prevented from contacting the pressure sensing device 5, and further the pressure sensing device 5 is damaged by short circuit and the like, and the normal work of the pressure sensing device 5 is influenced.

Of course, the pressure sensing device 5 may also be externally connected to the housing, as long as the pressure sensing device 5 can form a seal with the second end 202 of the first air tube 2, which is not limited herein.

In one example, a sealing ring 7 is disposed between the pressure sensing device 5 and the second end 202.

A sealing ring 7 is arranged between the pressure sensing means 5 and the second end 202. The sealing ring 7 can be sleeved on the pressure sensing device 5, the sealing ring 7 can completely isolate the external environment on two sides of the pressure sensing device 5 from the first air pipe 2, and then the pressure difference between the pressure of the first air pipe 2 and the pressure of the external environment can be accurately measured through the pressure sensing device 5.

The seal ring 7 is, for example, an O-ring seal, and may be a sealant. The sealant is injected around the pressure sensing device 5, and the sealant is not limited as long as the sealant can be satisfactorily provided around the pressure sensing device 5.

In one example, a side wall or bottom of the housing forms the communication portion. The accommodating cavity 1 and the first air pipe 2 are communicated through a communication part.

For example, a communicating portion is formed in a side wall or a bottom portion of the housing, so that the accommodating chamber 1 inside the housing and the first air tube 2 can communicate through the communicating portion. When liquid is injected into the accommodating cavity 1, the liquid can enter the first air pipe 2 through the communicating part along with the gradual rise of the liquid level in the accommodating cavity 1. Which in turn enables a seal to be formed at the first end 201 of the first gas tube 2.

In one example, the measuring device further comprises a flow restriction block 6. The flow restriction block 6 is located in the communicating portion. The flow restricting block 6 is connected with the side wall of the housing. The flow restriction block 6 partitions the communication portion into a first communication portion 601 and a second communication portion 602.

For example, the measuring device can also comprise a flow restriction block 6. The flow restricting block 6 is provided in the communicating portion. The two ends of the flow limiting block 6 are connected with the side wall of the shell. The restrictor block 6 divides the communicating portion into a first communicating portion 601 and a second communicating portion 602.

The upper surface of the first communicating portion 601 is the lowest liquid level. If the liquid level is lower than the upper surface of the first communicating portion 601, the inside of the first air pipe 2 cannot be sealed, so that the air pressure in the first air pipe 2 is the same as the air pressure in the external environment, the pressure difference sensed by the pressure sensing device 5 is 0, and at this time, a user needs to be prompted that the liquid level is lower than the lowest liquid level and liquid injection is needed.

Second communicating portion 602: when the user uses the basin, when article such as cask were annotated liquid to holding chamber 1 in, holding chamber 1 was shone into in a large amount of liquid is instantaneous, and the bubble of swashing up or big liquid drop can be pushed in first trachea 2 to because the water level rises fast and can't in time be discharged just sealed up and deposit in first trachea 2, lead to the liquid level in first trachea 2 to be high on the left, the pressure difference that pressure sensing device 5 surveyed is inaccurate. Therefore, the communicating part is provided with the flow limiting block 6, and the second communicating part 602 isolated by the flow limiting block 6 enables the liquid level at the lowest part in the first air pipe 2 to rise together with the liquid level in the accommodating cavity 1, discharges redundant gas, fuses large liquid drops, and enables the pressure difference value to be accurately sensed by the pressure sensing device 5.

In one example, a second air tube 4 is configured in the side wall of the housing. One end of the second air tube 4 is connected to a pressure sensing device 5. The other end is communicated with the external environment.

For example, a second gas line 4 is formed in the side wall of the housing. One end of the second air tube 4 is connected to a pressure sensing device 5. The other end is communicated with the external environment. A second air tube 4 is separately provided on the side wall of the housing to communicate the pressure sensing device 5 with the external environment. The pressure sensing device 5 embedded in the side wall of the shell is not directly exposed to the external environment, and the service life of the pressure sensing device 5 is prolonged. The pressure sensing device 5 is communicated with the external environment through the second air pipe 4, so that the pressure difference value which can be accurately sensed by the pressure sensing device 5 can be avoided, and the pressure value deviation measured by the pressure sensing device 5 cannot be too large due to the sudden change of the air pressure of the external environment.

In another example, the second air tube 4 may be constructed in a bent structure. For example, the second air tube may have an L-shaped or S-shaped structure, which is not limited herein. The pressure sensing device 5 is embedded in the side wall of the housing, and the pressure sensing device 5 is communicated with the external environment by the second air pipe 4. Under the condition that the impurities in the external environment enter the side wall of the shell, the second air pipe 4 is constructed into a bending structure, so that the impurities in the external environment can be blocked by the bending structure. The impurities of the external environment are prevented from directly contacting the surface of the pressure sensing device 5, and further the work of the pressure sensing device 5 is prevented from being influenced.

In one example, the inner diameter of the first gas tube 2 increases from the middle to both ends.

For example, the inner diameter of the first air tube 2 gradually increases from the middle portion to both ends. The first end 201 and the second end 202 of the first gas tube 2 are trumpet-shaped. When liquid in the accommodating cavity 1 is discharged through the liquid outlet, the liquid level in the accommodating cavity 1 gradually decreases, and the liquid level in the first air pipe 2 also gradually decreases.

As shown in fig. 3, if the inner diameter of the air tube is set to be the same from the middle to the two ends, when the liquid level in the air tube decreases, a discontinuous liquid column may be generated inside the air tube, and a part of the liquid column may be blocked inside the air tube, so that the pressure value measured by the pressure sensing device 5 is inaccurate.

In this embodiment, the inner diameter of the first gas pipe 2 is gradually increased from the middle to the two ends, so that the first end 201 and the second end 202 of the first gas pipe 2 are trumpet-shaped. In the process that the liquid level in first trachea 2 descends gradually, the liquid column of the inside loudspeaker form of first trachea 2 can produce the turbulent flow, disturbs liquid column stability, and then can prevent that the liquid column from being stained with the stifled first trachea 2 of stagnation.

In one example, a controller and an alarm device are also included. The controller is respectively connected with the pressure sensing device 5 and the alarm device. And under the condition that the pressure difference is zero, the controller controls the alarm device to give an alarm.

For example, a control and an alarm can also be provided on the level measuring device. The alarm and the pressure sensing device 5 are respectively connected with the controller. And under the condition that the pressure difference value displayed by the pressure sensing device 5 is 0, the controller controls the alarm device to give an alarm to prompt a user to inject liquid in time.

The controller and the alarm device which are arranged independently can monitor the liquid level in the accommodating cavity 1 in real time. When the liquid level is lower than the minimum liquid level, the liquid level alarm can be timely sent out to prompt a user to inject liquid, so that the damage of electronic equipment caused by too low liquid level is avoided, and the use safety of the user is greatly improved.

According to one embodiment of the present disclosure, an electronic device is provided. The electronic equipment comprises the liquid level measuring device.

For example, the electronic device can be a suitable electronic device such as an electric water heater, a coffee maker, a cooler, and a sweeping robot, without limitation.

Take an electric water heater as an example. The liquid level measuring device is arranged in the water tank of the electric water heater. When the user is filling water, the water filling condition in the water tank can be judged through the pressure difference displayed by the pressure sensing device 5. When the water level in the water tank is too low, the liquid level measuring device can give an alarm to prompt a user that the water level is too low and water needs to be injected in time.

The working principle of the coffee machine and the cold drink machine is the same as or similar to that of the electric water heater, and the liquid level measuring device can also be applied to the coffee machine and the cold drink machine, so the details are not repeated.

In addition, a floor sweeper is taken as an example. The existing sweeping robot is not only limited to sweeping functions. Meanwhile, the mop also has the function of mopping the floor. The liquid level measuring device can be arranged in a water tank inside the sweeping robot under the condition that the sweeping robot is in a mopping state. The water tank inside the sweeping robot is divided into a purified water tank and a sewage tank. Generally, when the sweeping robot mops the floor, the clean water tank is used for draining water for mopping the floor, and the generated sewage is recycled to the sewage tank in the mopping process. With the continuous discharge of clean water and the gradual recovery of sewage. The liquid level measuring device arranged inside the sweeping robot can monitor the liquid level changes of the purified water tank and the sewage tank in real time. When the liquid level of the water purification tank is too low and the liquid level of the sewage tank is too high, the user is prompted to inject purified water and discharge sewage for the floor sweeping robot, and then the normal work of the floor sweeping robot is ensured.

In the above embodiments, the differences between the embodiments are described in emphasis, and different optimization features between the embodiments can be combined to form a better embodiment as long as the differences are not contradictory, and further description is omitted here in consideration of brevity of the text.

Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for purposes of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (10)

1. A liquid level measuring device, comprising: the device comprises a shell, a pressure sensing device and a first air pipe; the first air pipe comprises a first end and a second end, the first end is located in the accommodating cavity, the second end and the pressure sensing device form a seal, and the pressure sensing device is used for measuring the pressure difference between the air pressure in the first air pipe and the air pressure in the external environment.

2. A measuring device according to claim 1, wherein the first air tube and the housing are integrally formed.

3. A measuring device according to claim 1, wherein the pressure sensing means is embedded in a side wall of the housing.

4. The fluid level measuring device of claim 1, wherein a seal is disposed between the pressure sensing device and the second end.

5. The measuring device according to claim 2, wherein a communication portion is formed at a side wall or a bottom of the housing, and the accommodating chamber and the first air pipe are communicated through the communication portion.

6. The measuring device of claim 5, further comprising a flow restriction block positioned within the communication portion, the flow restriction block connected to a side wall of the housing, the flow restriction block dividing the communication portion into a first communication portion and a second communication portion.

7. A liquid level measuring device according to claim 2, wherein a second air tube is constructed in the side wall of the housing, one end of the second air tube being connected to the pressure sensing device and the other end being in communication with the external environment.

8. The fluid level measuring device according to any one of claims 1 to 7, wherein the first gas pipe has an inner diameter that increases from a middle portion to both end portions.

9. The liquid level measuring device according to any one of claims 1-7, further comprising a controller and an alarm device, wherein the controller is connected to the pressure sensing device and the alarm device respectively, and the controller controls the alarm device to give an alarm under the condition that the pressure difference is zero.

10. An electronic device, characterized in that it comprises a level measuring device according to any one of claims 1-9.

Images