Pressure sensing device and washing machine

Abstract

The application discloses a pressure sensing device and a washing machine, and relates to the technical field of water pressure sensing, wherein the pressure sensing device comprises a base and a sensing assembly; the sensing assembly comprises a sensor, a shell and an elastic element; the sensor is arranged on the base; a cavity is formed in the shell; the elastic element is sealed and covers one side of the cavity; the side of the cavity, which is far away from the elastic element, is in fluid communication with the sensor; and the side of the elastic element, which is far away from the cavity, is used for being connected with a measured water flow; when the elastic element is used for measuring the water pressure of the measured water flow, the measured water flow drives the elastic element to elastically deform towards the direction close to the cavity, so as to compress the gas in the cavity, and the sensor senses the change of the gas pressure in the cavity; the application extrudes the elastic element by the change of the water pressure of the measured water flow, so as to change the gas pressure in the cavity, and then the water pressure of the measured water flow is indirectly obtained by the sensor sensing the gas pressure, so that the sensor is avoided from directly contacting the measured water flow, and the maintenance cost is reduced.

Description

Technical Field

[0001] This application relates to the field of water pressure sensing technology, and in particular to a pressure sensing device and a washing machine. Background Technology

[0002] In existing technologies, traditional sensors used to measure water pressure require the sensor to be in direct contact with the water flow being measured in order to determine whether the water pressure has reached a preset value. However, the water flow being measured may be turbid or contain impurities. Over time, the sensor itself is easily corroded by sewage, or the water flow containing impurity particles may cause certain damage to the sensor, thereby increasing maintenance costs. Utility Model Content

[0003] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a pressure sensing device that enables the sensor to indirectly sense the water pressure of the water flow being measured without the sensor being in contact with the water flow being measured.

[0004] A pressure sensing device according to a first aspect of this application includes: a base; a sensing component, the sensing component including a sensor, a housing, and an elastic element, the sensor being disposed on the base, a chamber being formed within the housing, the elastic element being sealed and covered on one side of the chamber, the side of the chamber away from the elastic element being in fluid communication with the sensor, and the side of the elastic element away from the chamber being used to contact the water flow to be measured. When the elastic element is used to measure the water pressure of the water flow to be measured, the water flow to be measured causes the elastic element to elastically deform in a direction closer to the chamber, thereby compressing the gas in the chamber, so that the sensor senses the change in gas pressure in the chamber.

[0005] The pressure sensing device according to the embodiments of this application has at least the following beneficial effects: by setting a base, the sensor can be fixedly installed on the base and kept at a certain distance from the water level of the measured water flow, avoiding direct contact between the sensor and the measured water flow; the elastic element covers one side of the housing, and the cavity formed inside the housing facilitates the containment of air. When the water pressure of the measured water flow is measured, the water pressure increases, and the measured water flow squeezes the side of the elastic element away from the cavity, causing the elastic element to undergo elastic deformation towards the cavity, thereby compressing the gas in the cavity and causing a change in the gas pressure in the cavity. Since the cavity is in flow communication with the sensor, the change in gas pressure will be sensed by the sensor, thereby indirectly sensing the change in water pressure of the measured water flow. Thus, the water pressure can be sensed without the sensor being in direct contact with the measured water flow, thereby reducing the risk of the sensor being corroded or damaged by sewage and reducing maintenance costs.

[0006] According to some embodiments of this application, it also includes a housing, in which the base and the sensing component are both disposed, the housing has a through-hole, the elastic element covers the through-hole, and the water flow to be measured is connected to the side of the elastic element away from the chamber through the through-hole.

[0007] According to some embodiments of this application, a protrusion is provided at one end of the outer casing near the elastic element, the protrusion being used for engaging with a washing machine.

[0008] According to some embodiments of this application, the protrusions are provided in multiple ways, and the multiple protrusions are sleeved on the end of the outer shell near the elastic element in a vertical direction.

[0009] According to some embodiments of this application, a connecting tube is also included. A first connecting portion is provided on the side of the chamber away from the elastic element, and a second connecting portion is provided on the sensor. One end of the connecting tube is detachably sleeved on the end of the first connecting portion away from the chamber, and the other end of the connecting tube is detachably sleeved on the end of the second connecting portion away from the sensor. The chamber is in fluid communication with the sensor through the first connecting portion, the second connecting portion, and the connecting tube.

[0010] According to some embodiments of this application, a frustoconical guide is fitted at the end of the first connecting portion away from the chamber, and the smaller diameter end of the frustoconical guide extends away from the first connecting portion.

[0011] According to some embodiments of this application, the elastic element is an elastic film.

[0012] According to some embodiments of this application, the housing is detachably disposed within the outer casing.

[0013] According to some embodiments of this application, a sealing ring is also provided, and the elastic element is sealed and covered to the opening by the sealing ring.

[0014] The washing machine according to a second aspect embodiment of this application includes:

[0015] The pressure sensing device according to the first aspect of this application.

[0016] The washing machine according to the embodiments of this application has at least the following beneficial effects: By setting a base, the sensor can be fixedly installed on the base and kept at a certain distance from the water level of the water flow being measured, avoiding direct contact between the sensor and the water flow being measured; the elastic element covers one side of the shell, and the cavity formed inside the shell facilitates the containment of air. When the water pressure of the water flow being measured is measured, the water pressure increases, and the water flow being measured squeezes the side of the elastic element away from the cavity, causing the elastic element to undergo elastic deformation towards the cavity, thereby compressing the gas in the cavity and causing a change in the gas pressure in the cavity. Since the cavity is in communication with the sensor, the change in gas pressure will be sensed by the sensor, thereby indirectly sensing the change in water pressure of the water flow being measured. Thus, the water pressure can be sensed without the sensor being in direct contact with the water flow being measured, thereby reducing the risk of the sensor being corroded or damaged by sewage and reducing maintenance costs; by introducing the pressure sensing device of this application, the water pressure of the water flow being measured is indirectly measured, reducing the risk of damage to the washing machine sensor of this application, thereby reducing maintenance costs.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of a pressure sensing device according to an embodiment of this application;

[0020] Figure 2 for Figure 1 The diagram shown illustrates a pressure sensing device with a housing.

[0021] Figure label:

[0022] Base 100; sensor 110; second connecting part 111; housing 120; first connecting part 121; frustoconical guide 122; first connecting hole 123; elastic element 130; sealing ring 140; outer shell 150; protrusion 151; mounting hole 152; through port 153. Detailed Implementation

[0023] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0024] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0026] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0027] Currently, in washing machines, traditional sensors used to measure water pressure need to be in direct contact with the water flow being measured. However, the water flow being measured inside the washing machine is often turbid, or even contains a lot of impurities. As a result, during the long-term measurement of water pressure, the water flow may corrode the sensor, and large particles of impurities may even damage the sensor, thus increasing maintenance costs.

[0028] Based on this, this application proposes a pressure sensing device that can indirectly measure the water pressure of the water flow without direct contact with the water flow being measured by measuring the pressure of the gas.

[0029] It is understood that the pressure sensing device in this application embodiment includes a base 100 and a sensing component. The sensing component includes a sensor 110, a housing 120, and an elastic element 130. The sensor 110 is disposed on the base 100. A chamber is formed inside the housing 120. The elastic element 130 is sealed and covered on one side of the chamber. The side of the chamber away from the elastic element 130 is in fluid communication with the sensor 110. The side of the elastic element 130 away from the chamber is used to contact the water flow to be measured. When the elastic element 130 is used to measure the water pressure of the water flow to be measured, the water flow to be measured causes the elastic element 130 to elastically deform towards the direction of the chamber, so as to compress the gas in the chamber and make the sensor 110 sense the change in gas pressure in the chamber.

[0030] The beneficial effects of the pressure sensing device in this application embodiment are as follows: By setting the base 100, the sensor 110 can be fixedly installed on the base 100 and kept at a certain distance from the water level of the measured water flow, avoiding direct contact between the sensor 110 and the measured water flow; the elastic element 130 covers one side of the housing 120, and the cavity formed inside the housing 120 is convenient for containing air. When the water pressure of the measured water flow is measured, the water pressure increases, and the measured water flow squeezes the side of the elastic element 130 away from the cavity, causing the elastic element 130 to undergo elastic deformation towards the cavity, thereby compressing the gas in the cavity and causing a change in the gas pressure in the cavity. Since the cavity is in flow communication with the sensor 110, the change in gas pressure will be sensed by the sensor 110, thereby indirectly sensing the water pressure change of the measured water flow. Thus, the water pressure can be sensed without the sensor 110 directly contacting the measured water flow, thereby reducing the risk of the sensor 110 being corroded or damaged by sewage and reducing maintenance costs.

[0031] For example, in some embodiments, reference is made to Figure 1 In this embodiment, one side of the elastic element 130 is in contact with the water flow being measured, and the other side of the elastic element 130 is sealed to one side of the cavity formed by the housing 120. When the water level of the water flow being measured rises, increasing the water pressure, the water flow compresses the elastic element 130, causing it to elastically deform towards the cavity, thereby compressing the gas inside the cavity and increasing the gas pressure. Conversely, when the water level of the water flow being measured drops, decreasing the water pressure, the pressure of the water flow on the elastic element 130 decreases, causing the elastic element 130 to return to its original position away from the cavity, thereby reducing the gas pressure inside the cavity. The degree of compression of the gas reduces the gas pressure. Since the side of the chamber away from the elastic element 130 is in fluid communication with the sensor 110, the changing gas pressure is sensed and acquired by the pressure-sensitive element on the sensor 110, which then generates an electrical signal that is transmitted to the main control board connected to the sensor 110. The water pressure of the measured water flow is then indirectly calculated based on the preset relationship between the gas pressure and the measured water flow pressure. Thus, the sensor 110 can measure the water pressure of the measured water flow without directly contacting it, reducing the risk of corrosion or damage to the sensor 110 and lowering the maintenance costs.

[0032] It should be noted that, under normal circumstances, the measured gas pressure can be approximately equal to the water pressure of the water flow being measured.

[0033] It is understood that the pressure sensing device of this application also includes a housing 150, a base 100 and a sensing component, all of which are disposed inside the housing 150. The housing 150 is provided with a port 153, and an elastic element 130 is covered on the port 153. The water flow to be measured is connected to the side of the elastic element 130 away from the chamber through the port 153.

[0034] For example, in some embodiments, reference is made to Figure 2 In this embodiment, the housing 150 is designed so that the base 100 and the sensing component can be placed inside the housing 150 to protect the base 100 and the sensing component and prevent the measured water flow from directly contacting the sensor 110 during use. The housing 150 is provided with a through hole, and the side of the elastic element 130 away from the chamber is sealed and covered on the through hole, so that the measured water flow can contact the side of the elastic element 130 away from the chamber. This allows the pressure of the gas in the chamber to be changed by the elastic element 130, while the measured water flow will not contact other devices inside the housing 150, thus providing a certain degree of protection.

[0035] It should be noted that: reference Figure 2 The outer wall of the outer casing 150 is also provided with mounting holes 152. The mounting holes 152 are fixedly connected to the bottom of the washing machine drum casing 150 by bolt structure, which further stabilizes the connection between the pressure sensing device of this application and the washing machine, and prevents the pressure sensing device of this application from being separated from the washing machine during use, thereby affecting the monitoring effect.

[0036] It is understandable that a protrusion 151 is fitted onto one end of the outer casing 150 near the elastic element 130, and the protrusion 151 is used to engage with the washing machine.

[0037] For example, in some embodiments, reference is made to Figure 2 In this embodiment, the outer casing 150 is provided with a protrusion 151 at one end near the elastic element 130, and the bottom of the washing machine drum casing 150 is provided with a recess that matches the protrusion 151, so that the outer casing 150 can be engaged with the washing machine through the protrusion 151 and the recess, thereby preventing the pressure sensing device of this application from detaching from the washing machine during use, which would affect the effect of water pressure monitoring.

[0038] It is understandable that: multiple protrusions 151 are provided, and multiple protrusions 151 are sleeved on the end of the outer shell 150 near the elastic element 130 in the vertical direction.

[0039] For example, in some embodiments, reference is made to Figure 2 In this embodiment, multiple protrusions 151 are parallel to the horizontal plane of the water flow being measured and are distributed vertically at one end of the outer casing 150 near the elastic element 130, so that the concave part of the washing machine can engage with one of the multiple protrusions 151 to adjust the installation position of the pressure sensing device of this application to adapt to washing machines of different specifications, thereby expanding the application scenarios and scope of the pressure sensing device of this application.

[0040] It should be noted that some washing machines also have multiple recesses, which are connected to multiple protrusions 151 in a one-to-one manner, making the connection between the washing machine and the pressure sensing device of this application tighter and further preventing the pressure sensing device of this application from detaching from the drum housing 150 of the washing machine during use.

[0041] It is understood that the pressure sensing device of this application also includes a connecting pipe. A first connecting part 121 is provided on the side of the chamber away from the elastic element 130, and a second connecting part 111 is provided on the sensor 110. One end of the connecting pipe is detachably sleeved on the end of the first connecting part 121 away from the chamber, and the other end of the connecting pipe is detachably sleeved on the end of the second connecting part 111 away from the sensor 110. The chamber is in fluid communication with the sensor 110 through the first connecting part 121, the second connecting part 111 and the connecting pipe.

[0042] For example, in some embodiments, reference is made to Figure 1 In this embodiment, the first connecting part 121 connects the chamber and the connecting pipe (not shown in the figures), and the second connecting part 111 connects the sensor 110 and the connecting pipe, thereby achieving fluid communication between the chamber and the sensor 110. This allows the sensor 110 to sense changes in the gas pressure within the chamber, and thus indirectly calculate the water pressure of the measured water flow. The detachable connection of one end of the connecting pipe to the first connecting part 121 and the other end to the second connecting part 111 facilitates quick replacement of the connecting pipe without replacing the entire sensing assembly, further reducing maintenance costs.

[0043] It is understood that a frustoconical guide 122 is fitted onto the end of the first connecting part 121 away from the chamber, and the smaller diameter end of the frustoconical guide 122 extends away from the first connecting part 121.

[0044] For example, in some embodiments, reference is made to Figure 1 In this embodiment, the first connecting part 121 is connected to the connecting tube via a frustoconical guide 122, so that when the connecting tube is replaced, the connecting tube can be guided to connect to the first connecting part 121 more quickly, improving the replacement efficiency of the connecting tube. At the same time, the smaller diameter end of the first frustoconical guide 122 is set to extend away from the first connecting part 121, so that the connecting tube can be detachably sleeved on the smaller diameter end of the frustoconical guide 122, making the connection between the connecting tube and the frustoconical guide 122 tighter and reducing the risk of the connecting tube detaching from the first connecting part 121 during use.

[0045] It is understandable that the elastic element 130 is an elastic film.

[0046] For example, in some embodiments, reference is made to Figure 1 and Figure 2In this embodiment, the elastic element 130 is an elastic film, which reduces the cost of product manufacturing. Moreover, the elastic film is more sensitive. When the water level of the measured water flow rises, resulting in increased water pressure, the elastic film can generate elastic deformation in time to compress the gas in the chamber, thereby improving the efficiency of water pressure detection.

[0047] It is understandable that the housing 120 is detachably located within the outer casing 150.

[0048] For example, in some embodiments, reference is made to Figure 1 In this embodiment, the outer side wall of the housing 120 is provided with a first connection hole 123. The first connection hole 123 is detachably connected to the outer shell 150 by a bolt structure. That is, the screw passes through the first connection hole 123 and is detachably connected to the second connection hole in the outer shell 150 that is compatible with the screw. This allows the housing 120 to be replaced in time when it is damaged. Compared with the integrated design of the housing 120 and the outer shell 150, when the housing 120 is damaged, only the housing 120 needs to be replaced, without having to replace the outer shell 150 together, thereby reducing the maintenance cost.

[0049] It is understood that the pressure sensing device of this application is also provided with a sealing ring 140, and the elastic element 130 is sealed and covered by the sealing ring 140 to the port 153.

[0050] For example, in some embodiments, reference is made to Figure 1 In this embodiment, the elastic element 130 is sealed to the opening 153 by the sealing ring 140, thereby improving the airtightness and preventing the water being tested from entering the housing 150 through the gap between the elastic element 130 and the opening 153, which would then corrode and damage the devices inside the housing 150 and increase maintenance costs.

[0051] The washing machine according to the second aspect of the application includes the pressure sensing device of the first aspect of the application described above.

[0052] According to the washing machine of this application embodiment, by setting a base 100, the sensor 110 can be fixedly installed on the base 100 and maintain a certain distance from the water level of the measured water flow to avoid direct contact between the sensor 110 and the measured water flow; the elastic element 130 covers one side of the housing 120, and the cavity formed inside the housing 120 facilitates the containment of air. When the water pressure of the measured water flow is measured, the water pressure increases, and the measured water flow squeezes the side of the elastic element 130 away from the cavity, causing the elastic element 130 to undergo elastic deformation toward the cavity, thereby compressing the gas in the cavity, so that the cavity... The pressure of the gas inside the chamber changes, and since the chamber is connected to the sensor 110, the change in gas pressure is sensed by the sensor 110, which in turn indirectly senses the change in water pressure of the water flow being measured. This allows the water pressure to be sensed without the sensor 110 being in direct contact with the water flow being measured, thereby reducing the risk of the sensor 110 being corroded or damaged by sewage and reducing maintenance costs. By introducing the pressure sensing device of this application, the water pressure of the water flow being measured is indirectly measured, reducing the risk of damage to the washing machine sensor 110 of this application, and thus reducing maintenance costs.

[0053] Since the washing machine includes the pressure sensing device of the first aspect embodiment, the corresponding contents of the pressure sensing device of the first aspect embodiment can be applied to the washing machine of the second aspect, and have the same implementation principle and technical effect. To avoid redundancy, it will not be described in detail here.

[0054] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A pressure sensing device, characterized in that, include: Base; The sensing component includes a sensor, a housing, and an elastic element. The sensor is mounted on the base, and a chamber is formed inside the housing. The elastic element seals one side of the chamber, and the side of the chamber away from the elastic element is in fluid communication with the sensor. The side of the elastic element away from the chamber is used to contact the water flow being measured. When the elastic element is used to measure the water pressure of the water flow being measured, the water flow causes the elastic element to elastically deform towards the chamber, thereby compressing the gas inside the chamber and causing the sensor to sense the change in gas pressure inside the chamber.

2. The pressure sensing device according to claim 1, characterized in that, It also includes a housing, in which the base and the sensing component are both disposed. The housing has a through-hole, and the elastic element covers the through-hole. The water flow to be measured is connected to the side of the elastic element away from the chamber through the through-hole.

3. The pressure sensing device according to claim 2, characterized in that, The outer casing is fitted with a protrusion at one end near the elastic element, and the protrusion is used to engage with the washing machine.

4. The pressure sensing device according to claim 3, characterized in that, The protrusions are provided in multiple ways, and the multiple protrusions are sleeved on the end of the outer shell near the elastic element in a vertical direction.

5. The pressure sensing device according to claim 1, characterized in that, It also includes a connecting tube. The chamber is provided with a first connecting part on the side away from the elastic element, and the sensor is provided with a second connecting part. One end of the connecting tube is detachably sleeved on the end of the first connecting part away from the chamber, and the other end of the connecting tube is detachably sleeved on the end of the second connecting part away from the sensor. The chamber is in fluid communication with the sensor through the first connecting part, the second connecting part and the connecting tube.

6. The pressure sensing device according to claim 5, characterized in that, A frustoconical guide is fitted at the end of the first connecting portion away from the chamber, and the smaller diameter end of the frustoconical guide extends away from the first connecting portion.

7. The pressure sensing device according to claim 1, characterized in that, The elastic element is an elastic film.

8. The pressure sensing device according to claim 2, characterized in that, The housing is detachably disposed within the outer shell.

9. The pressure sensing device according to claim 2, characterized in that, A sealing ring is also provided, and the elastic element is sealed and covered to the opening by the sealing ring.

10. A washing machine, characterized in that, include: The pressure sensing device according to any one of claims 1 to 9.

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