One-way valve and washing and protecting equipment

Abstract

The utility model provides a one-way valve and a washing and protecting device using the same, the one-way valve comprises a valve body provided with a flow channel for air to flow; and the valve element closes the flow channel when the target condition that the air pressure of outward air flowing out through the flow channel by the washing and protecting equipment reaches a preset value occurs, and opens the flow channel when the target condition does not occur. The one-way valve can be automatically closed in response to the air pressure change of the flow channel through the valve element in the flow channel, the structure is simple and easy to implement, additional operation control is not needed, normal opening of a ventilation channel in washing and protecting equipment is achieved, and the ventilation channel is closed when high-humidity and / or high-temperature gas exists in an inner cavity of equipment for executing drying and the like. The environment of the inner cavity of the cleaning and protecting equipment can be kept clean, and the harm that high-humidity and / or high-temperature gas leaks from the ventilation channel can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of one-way valve technology, specifically to a one-way valve and washing and care equipment. Background Technology

[0002] To avoid problems such as dampness and darkness, bacterial growth, and odors caused by a completely sealed interior, vents are usually installed in washing and care equipment to connect the interior with the outside.

[0003] However, due to the presence of the vent, the hot air or high concentration of water vapor generated during the operation of the washing and care equipment can escape outside the equipment through the vent, causing problems such as heat loss and damage to external objects. Utility Model Content

[0004] To prevent hot air or high-concentration water vapor generated during the operation of the washing and care equipment from escaping to the outside of the washing machine through the vent, this application provides a one-way valve and a washing and care equipment.

[0005] In a first aspect, this application provides a one-way valve for use in washing and care equipment, comprising:

[0006] A valve body having a flow channel for gas flow;

[0007] The valve core closes the flow channel when the air pressure of the washing and care equipment flowing out through the flow channel reaches a predetermined value, and opens the flow channel when the target condition does not occur.

[0008] Optionally, the valve core is a valve disc that is rotatably disposed relative to the valve body within the flow channel.

[0009] The valve disc closes the flow channel when the target condition occurs; when the target condition does not occur, the flow channel opens due to the weight of the valve disc.

[0010] Optionally, the one-way valve further includes a fixed seat, which is fixedly mounted on the valve body, and the valve disc is rotatably connected to the fixed seat.

[0011] Optionally, the valve disc and the fixed seat are integrally formed flexible material parts, and the valve disc and the fixed seat are connected by a thin wall.

[0012] Optionally, the one-way valve further includes:

[0013] The limiting part is used to limit the opening angle of the valve disc when it opens the flow channel.

[0014] Optionally, the limiting part includes a first limiting boss disposed on the valve disc.

[0015] Optionally, when the one-way valve includes the fixed seat, the limiting part further includes a second limiting boss disposed on the fixed seat and used to abut against the first limiting boss.

[0016] Optionally, the flow channel has a positioning portion that cooperates with the valve core when the flow channel is closed.

[0017] In a first aspect, this application provides a washing and care device having a first ventilation channel connecting the inner cavity of the washing and care device with the outside, and a one-way valve as described in any of the above-mentioned schemes is provided in the first ventilation channel. When the one-way valve closes the flow channel, it restricts the gas in the inner cavity of the washing and care device from flowing outward.

[0018] Optionally, the first ventilation duct connects to the top of the inner cavity of the washing and care equipment;

[0019] The washing and care equipment also includes a second ventilation duct that connects the bottom of the inner cavity of the washing and care equipment to the outside.

[0020] The one-way valve of this application can automatically close in response to changes in air pressure in the flow channel through the valve core in its flow channel. The structure is simple and easy to implement, and no additional operation control is required. It realizes the normal opening of the ventilation channel in the washing and care equipment, and closes the ventilation channel when there is high humidity and / or high temperature gas in the internal cavity of the equipment such as drying. It can maintain the cleanliness of the internal environment of the washing and care equipment and avoid the hazards of high humidity and / or high temperature gas leakage from the ventilation channel. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the one-way valve of this utility model;

[0022] Figure 2 This is a schematic diagram of the one-way valve of this application exploding;

[0023] Figure 3 This is a perspective view of the check valve of this application in the closed state;

[0024] Figure 4 This is a cross-sectional view of the check valve of this application in the open state.

[0025] Figure 5 This is a cross-sectional view of the check valve of this application in the closed state.

[0026] Figure 6 This is an exploded schematic diagram of the washing and care equipment equipped with a one-way valve according to this application.

[0027] In the picture:

[0028] 1: Valve core; 12: Thin wall; 1S: Valve disc; 2: Valve body; 21: Flow channel; 211: Rib; 212: Mesh flow structure; 22: Positioning part; 3: Fixing seat; 4: Limiting part; 41: First limiting boss; 42: Second limiting boss; 6: Second ventilation channel; 7: First ventilation channel; 8: Inner cavity; 81: Air inlet; 82: Air outlet; 9: One-way valve. Detailed Implementation

[0029] The present patent type will be described in detail below with reference to the accompanying drawings and specific embodiments. In this specification, the dimensions in the drawings do not represent actual size ratios. The drawings are only used to illustrate the relative positional and connection relationships between the components. Components with the same name or the same reference numerals represent similar or identical structures and are limited to illustrative purposes.

[0030] The one-way valve provided in this application is applied to laundry and care equipment, such as washing machines, dishwashers, and garment care machines. In such laundry and care equipment, high humidity and / or high temperature gases are present in the inner cavity of the equipment due to washing, heating, drying and other operations. The one-way valve is used to prevent high humidity and / or high temperature gases from overflowing into the inner cavity of the laundry and care equipment when it is working.

[0031] Figure 1 This is a schematic diagram of the one-way valve of this application. (Refer to...) Figure 1 The one-way valve 9 provided in this embodiment includes a valve core 1 and a valve body 2; the valve body 2 has a flow channel 21 for gas flow, and the valve core 1 closes the flow channel 21 when the air pressure of the washing and care equipment reaching the outside air through the flow channel 21 reaches a predetermined value, and opens the flow channel 21 when the target condition does not occur, that is, the flow channel 21 is always kept in the open state when the target condition does not occur.

[0032] In practical applications, in order to achieve the sealing function of valve core 1, valve core 1 is positioned in a fixed position when sealing flow channel 21. A positioning part 22 can be provided on flow channel 22. When valve core 1 seals flow channel 21, valve core 1 contacts positioning part 22 and together seals flow channel 21.

[0033] A washing and care device with a ventilation channel connecting the inner cavity 8 of the washing and care device to the outside ensures that the air pressure inside and outside the washing and care device is balanced. However, when the washing and care device performs certain operations that generate high humidity and / or high temperature gases, such as the drying operation of a washing machine, garment care machine, or dishwasher, as well as the high-speed spin-drying operation of a washing machine, the gas pressure inside the washing and care device is significantly higher than that outside the washing and care device. The high humidity and / or high temperature gases overflow through the aforementioned ventilation channel, and the air pressure of the washing and care device is relatively high when it exits through the ventilation duct.

[0034] It is understood that when the valve core 1 of this application is applied to a washing and care equipment, the valve core 1 is specifically installed in the ventilation duct, and the flow channel 21 constitutes part of the ventilation duct. Under normal circumstances, the flow channel 21 is in an open state to ensure air circulation between the inside and outside of the washing and care equipment. However, when the washing and care equipment performs certain operations that generate high humidity and / or high temperature gases, the high humidity and / or high temperature gases overflow through the ventilation channel. The air pressure of the washing and care equipment through the ventilation duct is high, and the air pressure of the washing and care equipment through the flow channel 21 reaches a predetermined value. At this time, the flow channel 21 is closed by the valve core 1, and the high humidity and / or high temperature gases cannot be discharged to the outside of the washing and care equipment.

[0035] The one-way valve 9 of this application can automatically close in response to changes in air pressure in its flow channel 21 through the valve core 1. The structure is simple and easy to implement, and no additional operation control is required. It realizes the normal opening of the ventilation channel in the washing and care equipment, and closes the ventilation channel when there is high humidity and / or high temperature gas in the internal cavity of the equipment such as drying. This can maintain the cleanliness of the internal environment of the washing and care equipment and avoid the hazards of high humidity and / or high temperature gas leakage from the ventilation channel.

[0036] In this embodiment of the application, the setting of the above-mentioned predetermined value needs to be determined according to the actual situation of the washing and care equipment. It is only necessary to ensure that the flow channel 21 is in the open state under normal circumstances, and that the flow channel 21 can be closed by the valve core 1 in time when the washing and care equipment performs certain operations that generate high humidity and / or high temperature gas.

[0037] The aforementioned predetermined functions can be implemented through an electronic control scheme, such as valve core 1 being controlled by a motor, and the air pressure of the washing and care equipment flowing out through the flow channel 21 being detected by a sensor. When the air pressure reaches a predetermined value, valve core 1 is closed by controlling the motor. Alternatively, a differential pressure check valve can be implemented using common mechanical methods.

[0038] As an optional solution, the valve core 1 can be a valve disc 1S rotatably disposed relative to the valve body 2 within the flow channel 21. This valve disc 1S can be a plate-like body, which closes the flow channel 21 when the aforementioned target condition occurs; and opens the flow channel 21 due to its own weight when the aforementioned target condition does not occur. (Reference) Figure 3 and 5 The valve disc (1S) can close the flow channel 21 when the air pressure in the flow channel 21 reaches a predetermined value, see reference. Figure 4 When the wind pressure does not reach the predetermined value, valve disc 1S is in the open state due to its own weight.

[0039] In this embodiment, the positioning part 22 can be a rib 212 protruding from the inner surface of the flow channel 21. Based on the consideration of ensuring the sealing of the valve disc 1S, the rib 212 can be continuously extended on the inner wall of the flow channel 21 so that the edge of the valve disc 1S fits onto the rib 212. At this time, the presence of the rib 212 makes the cross section of the valve disc 1S slightly smaller than the air passage cross section of the flow channel 21, so as to avoid the valve disc 1S being interfered with by the inner wall of the flow channel 21 when it pivots.

[0040] The aforementioned positioning part 22 can also be a mesh flow passage structure 211 disposed along the interface of the flow channel 21. The mesh flow passage structure 211 is used to position the valve disc, and when the valve disc is made of a flexible material, the mesh flow passage structure 211 can also support the valve disc 1S to prevent deformation. Simultaneously, the mesh openings on the mesh flow passage structure 211 are used to maintain smooth airflow in the flow channel 21. The specific form of the mesh flow passage structure 211 is not unique. Figure 1 One example scheme is given in the paper, in which the mesh flow structure 211 can be formed by a number of ribs that radiate from the center of the flow channel 211 to the inner wall of the flow channel 21.

[0041] Of course, as a preferred embodiment, such as Figure 1 and Figure 2 As shown, the positioning part 22 may include both the mesh flow structure 211 and the rib 212.

[0042] The valve core 1, which is rotatably arranged relative to the valve body 2, can be directly rotatably connected to the valve body 2 via the valve disc 1S. As an optional implementation, the check valve 9 can also be provided with a fixing seat 3, which is fixedly arranged on the valve body 2, and the valve disc 1S is rotatably connected to the fixing seat 3; wherein, the fixing seat 3 and the valve body 2 can be fixedly connected by means of snap-fit ​​or other methods.

[0043] The rotatable connection between the fixed seat 3 and the valve disc 1S can be achieved by using an independent rotating shaft. For example, shaft holes can be provided on the fixed seat 3 and the valve disc 1S, and then an independent rotating shaft can be installed in the shaft holes to ensure the rotation of the valve disc 1S. Alternatively, a flexible component can be used to connect the fixed seat 3 and the valve disc 1S, replacing the rotating shaft. This flexible component can be integrally injection molded with the fixed seat and the valve disc. Furthermore, as... Figure 2 As shown, the valve disc and the fixed seat 3 are integrally formed flexible material parts. The valve disc and the fixed seat 3 are connected by a thin wall 12. In the actual product, the valve disc and the fixed seat 3 are both made of rubber and are integrally formed. The valve disc and the fixed seat are connected by a rubber thin wall 12, which supports the mutual rotation between the valve disc and the fixed seat 3.

[0044] Reference Figure 4When the angle of valve disc 1S is too large, or even when the free end of valve disc 1S is close to the ventilation channel where the one-way valve 9 is located, the air generated in the flow channel 21 cannot enter the gap between the side of the valve disc away from the positioning part and the ventilation channel, and therefore cannot generate the pressure to push the valve disc from the open state to the closed state. Therefore, in order to limit the opening angle of the valve disc when opening the flow channel, the embodiments of this application may also include a limiting part 4.

[0045] The location of the limiting part 4 can be determined according to actual needs. It can be on at least one of the valve disc 1S and the valve core 1. If the aforementioned fixing seat 3 is present, the limiting part 4 can also be provided on the fixing seat 3. The structure of the limiting part 4 is usually a bracket, a boss, or the like. This application does not limit the specific implementation structure of the limiting part.

[0046] Reference Figure 2-5 As an optional first implementation, the limiting part 4 can be a first limiting protrusion 41 provided on the valve disc 1S. When the valve disc 1S rotates from the closed state to the open state, the first limiting protrusion 41 will first abut against the ventilation channel installed on the fixed seat 3, valve body 2, or one-way valve 9 to limit the opening angle of the valve disc. As an optional second implementation, if the one-way valve 9 also includes the fixed seat 3, the limiting part 4 can also include a second limiting protrusion 42 provided on the fixed seat 3 and used to abut against the first limiting protrusion 41, in addition to the first limiting protrusion 41. When the valve disc 1S rotates from the closed state to the open state, the first limiting protrusion 41 will first abut against the second limiting protrusion 42 on the fixed seat to limit the opening angle of the valve disc 1S.

[0047] In this embodiment, the limiting part 4 can be mounted on other components, such as the valve body 2, the fixing seat 3, or the valve disc 1S by means of a snap fastener or screw. The limiting part 4 can also be integrally formed with other components, see reference... Figure 2-5 The first limiting boss 41 and the second limiting boss 42 are integrally formed with the valve disc 1S and the fixed seat 3, respectively.

[0048] On the other hand, refer to Figure 6 This application provides a washing and care device, which has a first ventilation channel 7 connecting the inner cavity of the washing and care device with the outside. A one-way valve 9 as described in any of the above embodiments is provided in the first ventilation channel 7. When the one-way valve 9 closes the flow channel 21, it restricts the gas in the inner cavity of the washing and care device from flowing outward.

[0049] It is understood that the valve core in the one-way valve flow channel can automatically close the one-way valve in response to changes in the flow channel air pressure. The structure is simple and easy to implement, and no additional operation control is required. It realizes the normal opening of the first ventilation channel and closes the first ventilation channel when there is high humidity and / or high temperature gas in the internal cavity of the equipment such as drying. This can maintain the cleanliness of the internal environment of the washing and care equipment and avoid the hazards of high humidity and / or high temperature gas leaking from the ventilation channel.

[0050] Among the optional solutions, such as Figure 6 As shown, the first ventilation channel 7 of the washing and care equipment is connected to the top of the inner cavity 8 of the washing and care equipment; and the washing and care equipment also includes a second ventilation channel 6, which connects the bottom of the inner cavity 8 of the washing and care equipment to the outside. Thus, with an air inlet 81 and an air outlet 82 respectively provided at the bottom and top of the inner cavity 8 of the washing and care equipment, when the door of the washing and care equipment is closed, the inner cavity of the washing and care equipment can have sufficient gas circulation and exchange with the external environment, that is, the air intake and exhaust functions are performed simultaneously; especially when a pet or child is accidentally trapped in the inner cavity of the washing and care equipment, because the air inlet 81 and the air outlet 82 are provided at the bottom and top of the inner cavity of the washing and care equipment respectively, and the pet or child will cause the temperature of the inner cavity of the washing and care equipment to rise, creating a chimney effect, the thermal pressure difference will cause the air to be discharged from the upper air outlet, and the external airflow will enter the inner cavity of the washing and care equipment from the bottom air inlet, forming natural ventilation, ensuring the exchange of internal air, ensuring oxygen content, and preventing the pet or child from suffocating.

[0051] The above description is merely a preferred embodiment of this patent type and is not intended to limit the scope of this patent type. Without departing from the design spirit of this patent type, all modifications and improvements made by those skilled in the art to the technical solutions of this patent type should fall within the protection scope defined by the claims of this patent type.

Claims

1. A one-way valve, used in washing and care equipment, characterized in that, include: Valve body (2), the valve body (2) having a flow channel (21) for gas flow; The valve core (1) closes the flow channel (21) when the air pressure of the washing and care equipment flowing out through the flow channel (21) reaches a predetermined value, and opens the flow channel (21) when the target condition does not occur.

2. The one-way valve as described in claim 1, characterized in that, The valve core (1) is a valve disc (1S) that is rotatably disposed relative to the valve body (2) in the flow channel (21). The valve disc (1S) closes the flow channel (21) when the target condition occurs; when the target condition does not occur, the flow channel (21) is opened by the weight of the valve core (1).

3. The one-way valve as described in claim 2, characterized in that, It also includes a fixing seat (3), which is fixedly mounted on the valve body (2) and is rotatably connected to the valve disc (1S).

4. The one-way valve as described in claim 3, characterized in that, The valve disc (1S) and the fixed seat (3) are integrally formed flexible material parts, and the valve disc (1S) and the fixed seat (3) are connected by a thin wall.

5. The one-way valve as described in any one of claims 2-4, characterized in that, Also includes: The limiting part (4) is used to limit the opening angle of the valve disc (1S) when it opens the flow channel (21).

6. The one-way valve as described in claim 5, characterized in that, The limiting part (4) includes a first limiting boss (41) disposed on the valve disc (1S).

7. The one-way valve as described in claim 3, characterized in that, Also includes: The limiting part (4) is used to limit the opening angle of the valve disc (1S) when it opens the flow channel (21); The limiting part (4) includes a first limiting boss (41) disposed on the valve disc (1S); When the one-way valve includes the fixed seat (3), the limiting part (4) also includes a second limiting boss (42) disposed on the fixed seat (3) and used to abut against the first limiting boss (41).

8. The one-way valve as described in claim 1, characterized in that, The flow channel (21) has a positioning part (22) that cooperates with the valve core (1) when closing the flow channel (21).

9. A washing and care device, characterized in that, The device has a first ventilation channel (7) connecting the inner cavity (8) of the washing and care equipment to the outside. A one-way valve (9) according to any one of claims 1-8 is provided in the first ventilation channel (7). When the one-way valve (9) closes the first ventilation channel (7), it restricts the gas in the inner cavity (8) of the washing and care equipment from flowing outward.

10. The washing and care equipment as described in claim 9, characterized in that, The first ventilation channel (7) is connected to the top of the inner cavity (8) of the washing and care equipment; The washing and care equipment also includes a second ventilation channel (6) that connects the bottom of the inner cavity (8) of the washing and care equipment to the outside.

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