CN215865604U - Negative pressure sensor, automatic treating agent feeding system and washing equipment - Google Patents
Negative pressure sensor, automatic treating agent feeding system and washing equipment Download PDFInfo
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- CN215865604U CN215865604U CN202122014434.5U CN202122014434U CN215865604U CN 215865604 U CN215865604 U CN 215865604U CN 202122014434 U CN202122014434 U CN 202122014434U CN 215865604 U CN215865604 U CN 215865604U
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Abstract
The utility model relates to the technical field of sensors, and discloses a negative pressure sensor, an automatic treating agent feeding system and washing equipment, wherein the negative pressure sensor comprises: a positive pressure chamber cover; the negative pressure cavity cover is hermetically buckled with the positive pressure cavity cover, and a cavity is formed between the negative pressure cavity cover and the positive pressure cavity cover; the Hall element is connected to the positive pressure cavity cover or the negative pressure cavity cover; the elastic diaphragm is hermetically clamped between the negative pressure cavity cover and the positive pressure cavity cover, the cavity is divided into a positive pressure cavity and a negative pressure cavity by the elastic diaphragm, the positive pressure cavity is communicated with the external atmosphere, the negative pressure cavity is communicated with the automatic treating agent feeding system, and the elastic diaphragm bulges towards the negative pressure cavity under the action of the pressure difference between the positive pressure cavity and the negative pressure cavity along with the reduction of the treating agent in the automatic treating agent feeding system; the magnetic sheet is connected to the elastic membrane. The negative pressure sensor can realize electrical safety isolation, and has high safety, long service life and high reliability.
Description
Technical Field
The utility model relates to the technical field of sensors, in particular to a negative pressure sensor, an automatic treating agent feeding system and washing equipment.
Background
With the continuous development of household appliance intellectualization, many manufacturers add a function of automatically adding a treating agent to an automatic washing machine or a dish washing machine. Usually, the remaining amount of treating agent is fed back by means of a level sensor, i.e. by means of a float cooperating with a corresponding contactless switch or sensor.
At present, although some household appliances begin to use a negative pressure sensor to feed back the residual condition of the treating agent, the places where the household appliances such as washing machines or dish washing machines are used are wet, and the humidity resistance and the corrosion resistance of mechanical contacts used by the conventional negative pressure sensor cannot meet the requirements, so that the reliability requirements of safe isolation and long service life are not met.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to provide a negative pressure sensor, which can realize electrical safety isolation, has high safety, and has an improved service life and reliability.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a negative pressure sensor, comprising: a positive pressure chamber cover; the negative pressure cavity cover is hermetically buckled with the positive pressure cavity cover, and a cavity is formed between the negative pressure cavity cover and the positive pressure cavity cover; the Hall element is connected to the positive pressure cavity cover or the negative pressure cavity cover; the elastic diaphragm is hermetically clamped between the negative pressure cavity cover and the positive pressure cavity cover, the cavity is divided into a positive pressure cavity and a negative pressure cavity by the elastic diaphragm, the positive pressure cavity is communicated with the external atmosphere, the negative pressure cavity is communicated with the automatic treating agent feeding system, and the elastic diaphragm bulges towards the negative pressure cavity under the action of the pressure difference between the positive pressure cavity and the negative pressure cavity along with the reduction of the treating agent in the automatic treating agent feeding system; the magnetic sheet is connected to the elastic membrane.
As a preferable scheme of the negative pressure sensor, the negative pressure sensor further comprises a spring, one end of the spring is connected to the elastic diaphragm, and the other end of the spring is connected to the negative pressure cavity cover.
As a preferred scheme of the negative pressure sensor, the negative pressure sensor further comprises an adjusting screw, an adjusting screw hole is formed in the negative pressure cavity cover in a penetrating mode, the adjusting screw is screwed in the adjusting screw hole in a sealing mode, and one end, far away from the elastic membrane, of the spring is connected to the adjusting screw.
As a preferred scheme of the negative pressure sensor, a positioning column is arranged on the elastic diaphragm, a positioning hole is formed in the magnetic sheet, and the magnetic sheet is sleeved on the positioning column through the positioning hole.
As a preferable scheme of the negative pressure sensor, one end of the spring, which is close to the elastic diaphragm, is sleeved on the positioning column.
As a preferred scheme of the negative pressure sensor, an installation groove is arranged on the positive pressure cavity cover, and the hall element is installed in the installation groove.
As a preferable scheme of the negative pressure sensor, a sealing layer is filled in the mounting groove, and the sealing layer seals the hall element.
As a preferred scheme of negative pressure sensor, open in the malleation chamber lid and be equipped with the blow vent, the one end of blow vent communicate in malleation chamber, the other end and the external atmosphere intercommunication of blow vent.
As a preferred scheme of the negative pressure sensor, a negative pressure interface communicated with the negative pressure chamber is arranged on the negative pressure cavity cover, and the negative pressure interface is used for being communicated with the automatic treating agent feeding system.
As a preferred scheme of the negative pressure sensor, the negative pressure sensor further comprises a diaphragm sealing structure, the diaphragm sealing structure is arranged at the edge of the elastic diaphragm in a matching mode, and the elastic diaphragm is clamped between the negative pressure cavity cover and the positive pressure cavity cover in a sealing mode through the diaphragm sealing structure.
It is another object of the present invention to provide an automatic treating agent dispensing system which has high safety.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an automatic treating agent dosing system comprises the negative pressure sensor provided by any technical scheme.
It is still another object of the present invention to provide a washing apparatus having high safety and reliability and a long life span.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a washing device comprises the washing device provided by the technical scheme.
The utility model has the beneficial effects that:
the utility model provides a negative pressure sensor, which comprises a positive pressure cavity cover, a Hall element, a negative pressure cavity cover, an elastic diaphragm and a magnetic sheet, wherein the Hall element is connected to the positive pressure cavity cover or the negative pressure cavity cover, the magnetic sheet is connected to the elastic diaphragm, the elastic diaphragm is hermetically clamped between the negative pressure cavity cover and the positive pressure cavity cover, so that a positive pressure cavity and a negative pressure cavity are separated between the negative pressure cavity cover and the positive pressure cavity cover, the positive pressure cavity is communicated with the external atmosphere, the negative pressure cavity is communicated with an automatic treating agent feeding system, the automatic treating agent feeding system is of a sealing structure, and along with the consumption of an internal treating agent, the internal air pressure of the elastic diaphragm is reduced to form negative pressure, so that negative pressure also appears in the negative pressure chamber, the elastic diaphragm can protrude towards the negative pressure chamber under the action of the pressure difference between the positive pressure chamber and the negative pressure chamber, and meanwhile, the magnetic sheet is driven to be far away from the Hall element, so that the Hall element is triggered to output an alarm signal. Through the structure, the negative pressure sensor can realize electrical safety isolation and has higher safety, longer service life and higher reliability.
The utility model also provides an automatic treating agent feeding system, which realizes better electrical safety isolation and has higher safety due to the negative pressure sensor provided by the technical scheme.
The utility model also provides a washing device, and the washing device comprises the automatic treating agent feeding system provided by the technical scheme, so that the washing device has higher safety and reliability and is beneficial to prolonging the service life.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a cross-sectional view of a negative pressure sensor provided by an embodiment of the present invention;
FIG. 2 is an exploded view of a negative pressure sensor provided by an embodiment of the present invention;
fig. 3 is a schematic perspective view of a negative pressure sensor according to an embodiment of the present invention.
In the figure:
1. a positive pressure chamber cover; 11. a vent; 2. a Hall element; 3. a negative pressure chamber cover; 31. a negative pressure interface; 4. an elastic diaphragm; 41. a positioning column; 42. a diaphragm sealing structure; 5. a magnetic sheet; 61. a positive pressure chamber; 62. a negative pressure chamber; 7. a spring; 8. an adjusting screw; 9. mounting grooves; 10. and (7) sealing the layer.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first feature is directly connected to the second feature, or that the first feature is not directly connected to the second feature but is connected to the second feature via another feature. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical solution of the negative pressure sensor provided by the present invention is further described by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1-3, the present embodiment provides a negative pressure sensor for measuring the amount of a treating agent in an automatic treating agent dispensing system having a sealed structure, as shown in fig. 1-2, the negative pressure sensor includes a positive pressure chamber cover 1, a hall element 2, a negative pressure chamber cover 3, an elastic diaphragm 4, and a magnetic sheet 5, the hall element 2 is connected to the positive pressure chamber cover 1, the magnetic sheet 5 is connected to the elastic diaphragm 4, as shown in fig. 1, the negative pressure chamber cover 3 and the positive pressure chamber cover 1 are hermetically engaged, so that a cavity is formed between the negative pressure chamber cover 3 and the positive pressure chamber cover 1, the elastic diaphragm 4 is hermetically clamped between the negative pressure chamber cover 3 and the positive pressure chamber cover 1, the elastic diaphragm 4 divides the cavity into a positive pressure chamber 61 and a negative pressure chamber 62, the positive pressure chamber 61 is communicated with the outside atmosphere, the negative pressure chamber 62 is communicated with the automatic treating agent dispensing system, and the treating agent in the automatic treating agent dispensing system is reduced due to use, negative pressure is formed in the automatic treating agent feeding system, so that negative pressure occurs in the negative pressure chamber 62, the elastic membrane 4 protrudes towards the negative pressure chamber 62 under the action of the pressure difference between the positive pressure chamber 61 and the negative pressure chamber 62, the magnetic sheet 5 is driven to move towards the direction far away from the Hall element 2, and the Hall element 2 is triggered to output an alarm signal. Through the structure, the negative pressure sensor can realize electrical safety isolation and has higher safety, longer service life and higher reliability.
It should be noted that, in another embodiment, the hall element 2 may also be connected to the negative pressure chamber cover 3, and when the elastic diaphragm 4 protrudes toward the negative pressure chamber 62, the magnetic sheet 5 is driven to move toward the hall element 2, so as to trigger the hall element 2 to output an alarm signal. It will be appreciated that the specific connection position of the hall element 2 can be selected by a person skilled in the art according to the actual situation.
In this embodiment, as shown in fig. 1, an installation groove 9 is provided on the positive pressure chamber cover 1, and the hall element 2 is installed in the installation groove 9, so that the hall element 2 can be conveniently connected to the positive pressure chamber cover 1. Preferably, the mounting groove 9 is filled with a sealing layer 10, and the sealing layer 10 can seal the hall element 2, so that moisture and dirt in the external environment are prevented from contacting the hall element 2, the hall element 2 is electrically isolated, and the humidity resistance and the corrosion resistance of the hall element 2 are improved. Specifically, the sealing layer 10 is formed by filling epoxy resin in the mounting groove 9 to wrap the hall element 2, and the epoxy resin has good bonding strength and chemical resistance. It will be appreciated that the lead-out wires of the hall element 2 extend from the sealing layer 10 and are connected to the printed circuit board, enabling the output of the output signal of the hall element 2 to the printed circuit board.
Specifically, a vent 11 is opened in the positive pressure chamber cover 1, one end of the vent 11 is communicated with the positive pressure chamber 61, and the other end of the vent 11 is communicated with the outside atmosphere, so that the positive pressure chamber 61 is always kept at atmospheric pressure.
Preferably, as shown in fig. 1-2, the negative pressure sensor further includes a diaphragm sealing structure 42, the diaphragm sealing structure 42 is disposed at an edge of the elastic diaphragm 4 in a fitting manner, and the elastic diaphragm 4 is sealed and clamped between the negative pressure chamber cover 3 and the positive pressure chamber cover 1 by the diaphragm sealing structure 42. In other embodiments, the diaphragm sealing structure 42 may also be a sealing gasket integrally formed with the elastic diaphragm 4, and the diaphragm sealing structure 42 not only can seal and clamp the elastic diaphragm 4 between the negative pressure chamber cover 3 and the positive pressure chamber cover 1 to seal and isolate the negative pressure chamber 62 and the positive pressure chamber 61, but also can ensure that the negative pressure chamber cover 3 and the positive pressure chamber cover 1 are sealed and fastened. Preferably, the negative pressure chamber cover 3 is provided with an installation groove 9, the diaphragm sealing structure 42 is installed in the installation groove 9, and the installation groove 9 facilitates the positioning and installation of the diaphragm sealing structure 42.
In this embodiment, the negative pressure sensor further includes a spring 7, the spring 7 is disposed in the negative pressure chamber 62, one end of the spring 7 is connected to the elastic diaphragm 4, the other end of the spring 7 is connected to the negative pressure chamber cover 3, the spring 7 is a compression spring, the compression spring can provide an elastic restoring force for the elastic diaphragm 4, the elastic restoring force of the spring 7 and the elastic restoring force of the elastic diaphragm 4 jointly resist an acting force caused by a pressure difference between the negative pressure chamber 62 and the positive pressure chamber 61, and it is ensured that the elastic diaphragm 4 protrudes toward the negative pressure chamber 62 under a preset pressure difference.
Preferably, the negative pressure sensor further comprises an adjusting screw 8, an adjusting screw hole is formed through the negative pressure chamber cover 3, that is, the adjusting screw hole is communicated with the negative pressure chamber 62 and the external environment, the adjusting screw 8 is hermetically screwed in the adjusting screw hole, and one end of the spring 7, which is far away from the elastic diaphragm 4, is connected to the adjusting screw 8. Adjusting screw 8 revolves through twisting in adjusting the screw and moves towards elastic diaphragm 4 or keep away from elastic diaphragm 4 to adjust the elastic restoring force of spring 7, and then adjust reaching elastic diaphragm 4 and acting bellied pressure differential, thereby realize this negative pressure sensor's the regulation of triggering threshold value.
In this embodiment, be equipped with reference column 41 on the elastic diaphragm 4, seted up the locating hole on the magnetic sheet 5, the magnetic sheet 5 passes through locating hole cover and locates on reference column 41 for the location between magnetic sheet 5 and the elastic diaphragm 4 is convenient, the installation of the magnetic sheet 5 of being convenient for. Preferably, one end of the spring 7 close to the elastic diaphragm 4 is sleeved on the positioning column 41, so that the spring 7 is conveniently positioned in the installation process, and meanwhile, the spring 7 is prevented from shaking in the use process of the negative pressure sensor.
Preferably, the negative pressure cavity cover 3 is provided with a negative pressure interface 31 communicated with the negative pressure chamber 62, and the negative pressure interface 31 is used for being communicated with the automatic treating agent feeding system, so that the air pressure in the negative pressure chamber 62 can be always kept equal to the air pressure in the automatic treating agent feeding system.
The operation of the negative pressure sensor will be described below.
With the consumption of the treating agent in the automatic treating agent feeding system, the internal air pressure is reduced to form negative pressure, the negative pressure is introduced into the negative pressure chamber 62 through the negative pressure interface 31, the negative pressure also appears in the negative pressure chamber 62, the positive pressure chamber 61 is communicated with the external atmosphere through the vent 11, pressure difference is formed on two sides of the elastic membrane 4, namely the pressure of the positive pressure chamber 61 is greater than that of the negative pressure chamber 62, with the increase of the pressure difference, the thrust generated on the positive pressure chamber 61 side of the elastic membrane 4 is increased, the acting force of the spring 7 is overcome, the magnetic sheet 5 is driven to move in the direction far away from the Hall element 2, and then the Hall element 2 is triggered to output an alarm signal to remind an operator to supplement the treating agent in the automatic treating agent feeding system.
It should be noted that the automatic treating agent dispensing system includes a pumping device, a connecting conduit, and a variable volume container forming a sealed environment, and the negative pressure chamber 62 is in communication with the sealed environment of the automatic treating agent dispensing system. When sufficient treating agent is still in the container with the variable volume, a negative pressure value cannot be detected or only a very small negative pressure value can be detected in a sealed environment formed by the container with the variable volume, the connecting conduit and the extracting device, and the negative pressure sensor cannot send out an alarm signal; when only a small part of treating agent remains in the container with the variable volume along with the use of the treating agent, the extracting device is difficult to extract the treating agent, the sealed environment cannot be supplemented with air, the volume of the container with the variable volume for storing the treating agent cannot be further reduced, a large negative pressure value can be detected in the sealed environment, and at the moment, the negative pressure sensor sends out an alarm signal to remind a user of adding the treating agent in time.
The utility model also provides an automatic treating agent feeding system which comprises the negative pressure sensor provided by the technical scheme. Because the automatic treating agent feeding system comprises the negative pressure sensor provided by the technical scheme, the automatic treating agent feeding system realizes better electrical safety isolation and has higher safety.
The utility model also provides washing equipment which comprises the automatic treating agent feeding system provided by the technical scheme. Because the washing equipment comprises the automatic treating agent feeding system provided by the technical scheme, the washing equipment has higher safety and reliability and is beneficial to prolonging the service life.
It is understood that the washing device provided by the embodiment can be a washing machine, and can also be a washing device such as a dishwasher, and the washing device can add the treating agent by using an automatic treating agent feeding system comprising a negative pressure sensor.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (12)
1. A negative pressure sensor, comprising:
a positive pressure chamber cover (1);
the negative pressure cavity cover (3) is hermetically buckled with the positive pressure cavity cover (1), and a cavity is formed between the negative pressure cavity cover (3) and the positive pressure cavity cover (1);
the Hall element (2) is connected to the positive pressure cavity cover (1) or the negative pressure cavity cover (3);
the elastic diaphragm (4) is hermetically clamped between the negative pressure cavity cover (3) and the positive pressure cavity cover (1), the cavity is divided into a positive pressure cavity (61) and a negative pressure cavity (62) by the elastic diaphragm (4), the positive pressure cavity (61) is communicated with the outside atmosphere, the negative pressure cavity (62) is communicated with an automatic treating agent feeding system, and along with the reduction of treating agents in the automatic treating agent feeding system, the elastic diaphragm (4) protrudes towards the negative pressure cavity (62) under the action of the pressure difference between the positive pressure cavity (61) and the negative pressure cavity (62);
the magnetic sheet (5), the magnetic sheet (5) is connected to the elastic diaphragm (4).
2. The negative pressure sensor according to claim 1, further comprising a spring (7), wherein one end of the spring (7) is connected to the elastic diaphragm (4), and the other end of the spring (7) is connected to the negative pressure chamber cover (3).
3. The negative pressure sensor according to claim 2, further comprising an adjusting screw (8), wherein an adjusting screw hole is formed in the negative pressure chamber cover (3) in a penetrating manner, the adjusting screw (8) is screwed into the adjusting screw hole in a sealing manner, and one end of the spring (7) far away from the elastic diaphragm (4) is connected to the adjusting screw (8).
4. The negative pressure sensor according to claim 2, wherein the elastic diaphragm (4) is provided with a positioning column (41), the magnetic sheet (5) is provided with a positioning hole, and the magnetic sheet (5) is sleeved on the positioning column (41) through the positioning hole.
5. The negative pressure sensor according to claim 4, wherein an end of the spring (7) close to the elastic diaphragm (4) is sleeved on the positioning column (41).
6. The negative pressure sensor according to claim 1, wherein the positive pressure chamber cover (1) is provided with a mounting groove (9), and the hall element (2) is mounted in the mounting groove (9).
7. The negative pressure sensor according to claim 6, wherein the mounting groove (9) is filled with a sealing layer (10), and the sealing layer (10) seals the Hall element (2).
8. The negative pressure sensor according to claim 1, wherein a vent (11) is opened in the positive pressure chamber cover (1), one end of the vent (11) is communicated with the positive pressure chamber (61), and the other end of the vent (11) is communicated with the outside atmosphere.
9. The negative pressure sensor according to claim 1, wherein the negative pressure chamber cover (3) is provided with a negative pressure port (31) communicated with the negative pressure chamber (62), and the negative pressure port (31) is used for communicating with the automatic treating agent dispensing system.
10. The negative pressure sensor according to claim 1, further comprising a diaphragm sealing structure (42), wherein the diaphragm sealing structure (42) is disposed at an edge of the elastic diaphragm (4), and the elastic diaphragm (4) is hermetically clamped between the negative pressure chamber cover (3) and the positive pressure chamber cover (1) through the diaphragm sealing structure (42).
11. An automatic treatment agent delivery system, comprising a negative pressure sensor according to any one of claims 1 to 10.
12. A washing apparatus comprising an automatic dosing system of a treatment agent according to claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122014434.5U CN215865604U (en) | 2021-08-25 | 2021-08-25 | Negative pressure sensor, automatic treating agent feeding system and washing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122014434.5U CN215865604U (en) | 2021-08-25 | 2021-08-25 | Negative pressure sensor, automatic treating agent feeding system and washing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215865604U true CN215865604U (en) | 2022-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122014434.5U Active CN215865604U (en) | 2021-08-25 | 2021-08-25 | Negative pressure sensor, automatic treating agent feeding system and washing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215865604U (en) |
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2021
- 2021-08-25 CN CN202122014434.5U patent/CN215865604U/en active Active
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