Water inlet valve with pressure reduction function and coffee machine using the same

Abstract

This utility model specifically relates to a water inlet valve with pressure reducing function and a coffee machine using the water inlet valve. The water inlet valve includes a valve body and a pressure reducing assembly. The pressure reducing assembly includes a pressure reducing valve core, a pressure reducing diaphragm, and a pressure reducing spring. The valve body is provided with a pressure reducing channel and a pressure reducing chamber connected sequentially between the water inlet channel and the water outlet channel. A first sealing element is provided at a position in the axial direction of the pressure reducing valve core. When the water pressure in the water inlet channel is too high, the pressure reducing valve core moves, so that the first sealing element is located at the first position and forms a seal with the pressure reducing channel, ensuring the pressure reducing effect. At the same time, the water outlet is in a closed state, and the static water pressure is stable, thereby reducing the risk of water leakage in the downstream pipeline and ensuring the safety of the downstream equipment.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, specifically to a water inlet valve with pressure reducing function and a coffee machine using the water inlet valve. Background Technology

[0002] Unstable inlet water pressure is a common problem in existing water systems. Excessive inlet water pressure can damage downstream equipment, such as damaging pipelines and affecting the normal operating life of equipment.

[0003] The utility model patent with patent number CN216590014U discloses a constant pressure and constant flow water inlet solenoid valve. It plays a role in reducing pressure and stabilizing flow by changing the water passage area of ​​the central circular hole of the outlet connector through the adjusting rod. However, when there is a problem of downstream device failure or back-end water circuit blockage, the water flow cannot leave the pressure reducing chamber through the outlet channel because the outlet channel is in a closed state. Furthermore, since the pressure reducing structure of the water inlet valve does not have the function of static pressure stabilization, the water pressure in the pressure reducing chamber and the inlet channel will continue to rise, causing the risk of pipeline disconnection and leakage, and failing to effectively protect downstream devices. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a water inlet valve with pressure reduction function and a coffee machine using the water inlet valve.

[0005] The technical solution adopted by this utility model is as follows:

[0006] The first aspect of this utility model provides a water inlet valve with a pressure-reducing function, including a valve body having an inlet end and an outlet end. An inlet channel and an outlet passage are connected between the inlet end and the outlet end. A pressure-reducing component is provided between the inlet channel and the outlet passage to limit the outlet water pressure. The pressure-reducing component includes a pressure-reducing valve core, a pressure-reducing diaphragm, and a pressure-reducing spring. A pressure-reducing passage and a pressure-reducing chamber are sequentially connected between the inlet channel and the outlet passage in the valve body. The pressure-reducing diaphragm is located within the pressure-reducing chamber and divides the chamber into a first part and a second part. The first part is connected to the inlet channel, and the pressure-reducing spring is located within the second part and deforms the pressure-reducing diaphragm towards the first part.

[0007] A first sealing element is provided at a position in the axial direction of the pressure reducing valve core. The pressure reducing valve core is fixed to the middle of the pressure reducing diaphragm and moves axially in the pressure reducing channel. It has a first position where the first sealing element forms a sealing fit with the pressure reducing channel, and a second position where the first sealing element is disengaged from the pressure reducing channel.

[0008] When the water pressure in the inlet channel is too high, the pressure-reducing diaphragm deforms towards the second part and drives the pressure-reducing valve core to move, causing the first seal to move from the second position to the first position, blocking the connection between the inlet channel and the outlet channel.

[0009] Preferably, a first sealing groove is provided at a position in the axial direction of the pressure reducing valve core, the first sealing element is connected in the first sealing groove and the first sealing groove restricts the axial movement of the first sealing element.

[0010] Preferably, a limiting protrusion is provided at a position in the axial direction of the pressure reducing valve core. The limiting protrusion is located on the side of the first seal away from the pressure reducing channel and restricts the first seal from moving into the pressure reducing chamber.

[0011] Preferably, the water inlet end is connected to a water inlet connector assembly, the water inlet connector assembly includes a connector seat communicating with the water inlet end and a water inlet connector connected to the end of the connector seat away from the water inlet end, the water inlet connector having a water inlet.

[0012] Preferably, a filter element is connected inside the connector seat.

[0013] Preferably, the inner cavity of the connector seat includes a first cavity, a second cavity, a third cavity, and a fourth cavity that are sequentially connected from the end furthest from the water inlet to the end closest to the water inlet. The connector seat is inserted into the first cavity, and the fourth cavity is inserted into the water inlet of the valve body.

[0014] The second cavity is smaller than the third cavity and forms a second limiting step with it. The filter element is connected to the third cavity and is axially limited between the second limiting step and the water inlet.

[0015] Preferably, the filter element includes a support frame and a filter screen connected to the support frame. The support frame includes a first ring portion adapted to the shape of the third cavity and a connecting plate portion connected to the inner circumference of the first ring portion and abutting against the filter screen and the water inlet end at both ends, respectively.

[0016] Preferably, the second cavity is smaller than the first cavity and forms a first limiting step therewith, and a second sealing element that abuts against the first limiting step is connected inside the first cavity.

[0017] Preferably, the size of the fourth cavity is larger than that of the third cavity and forms a third limiting step with it. The end of the water inlet near the fourth cavity is provided with a fourth limiting step around its outer periphery. The water inlet is fitted with a third sealing element that is axially limited between the third limiting step and the fourth limiting step and forms a seal between the water inlet and the fourth cavity.

[0018] The second aspect of this utility model provides a coffee machine, which includes a housing and a water inlet valve with a pressure reducing function as described above. The water inlet valve is integrated into the housing, and the housing has a water inlet pipe connected to the water inlet end and a water outlet pipe connected to the water outlet end.

[0019] The beneficial effects of this utility model are as follows: When the water pressure in the inlet channel is too high, the pressure reducing valve core moves, so that the first sealing element is located at the first position and forms a seal with the pressure reducing channel, thus ensuring the pressure reducing effect; at the same time, when there is a problem of downstream device failure or back-end water circuit blockage, since the first sealing element and the pressure reducing channel are in a sealed state, the static water pressure is stable, the water flow in the inlet channel cannot enter the pressure reducing chamber, and the lower water pressure will not continue to rise, thereby reducing the risk of downstream pipeline leakage and ensuring the safety of downstream equipment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0021] Figure 1 This is a perspective structural diagram of Embodiment 1 of the present utility model;

[0022] Figure 2 This is a planar view of Embodiment 1 of the present utility model. Figure 1 ;

[0023] Figure 3 for Figure 2 Sectional view at point AA;

[0024] Figure 4 This is a planar view of Embodiment 1 of the present utility model. Figure 2 ;

[0025] Figure 5 for Figure 4 Cross-sectional view at point BB;

[0026] Figure 6 for Figure 3 Enlarged view of the structure at point C;

[0027] Figure 7 for Figure 5 Enlarged view of the structure at point D;

[0028] Figure 8 This is a three-dimensional structural diagram of the support frame;

[0029] In the diagram, 1 is the valve body; 11 is the inlet channel; 12 is the sealing channel; 13 is the outlet channel; 14 is the pressure reducing channel; 15 is the pressure reducing chamber; 21 is the pressure reducing valve core; 22 is the pressure reducing diaphragm; 23 is the pressure reducing spring; 31 is the connector seat; 32 is the inlet connector; 33 is the filter element; 101 is the inlet end; and 102 is the outlet end. 151. First part; 152. Second part; 211. First seal; 212. First sealing groove; 213. Limiting protrusion; 311. First cavity; 312. Second cavity; 313. Third cavity; 314. Fourth cavity; 315. First limiting step; 316. Second limiting step; 317. Third limiting step; 318. Fourth limiting step; 319. Third seal; 320. Second seal; 321. Inlet; 331. Support frame; 332. Filter screen; 3311. First ring; 3312. Connecting plate. Detailed Implementation

[0030] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0031] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0032] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0033] Example 1

[0034] like Figures 1 to 8As shown in the figure, in an embodiment of this utility model, a water inlet valve with pressure reducing function includes a valve body 1, an electromagnetic component, and a baffle plate component. The valve body 1 has an inlet end 101 and an outlet end 102. An inlet flow channel (including an inlet channel 11 and a sealing channel 12) and an outlet channel 13 are connected between the inlet end 101 and the outlet end 102. The electromagnetic component controls the baffle plate component to cut off or connect the inlet channel 11 and the sealing channel 12. A pressure reducing component is provided between the sealing channel 12 and the outlet channel 13 to limit the outlet water pressure. The pressure reducing component includes a pressure reducing valve core 21, a pressure reducing diaphragm 22, and a pressure reducing spring 23. The valve body 1 is located between the inlet flow channel and the outlet channel 13. A pressure-reducing channel 14 and a pressure-reducing chamber 15 are sequentially connected. The pressure-reducing diaphragm 22 is located within the pressure-reducing chamber 15, dividing the chamber into a first part 151 and a second part 152. The first part 151 is connected to the water inlet channel. The pressure-reducing spring 23 is located within the second part 152 and deforms the pressure-reducing diaphragm 22 toward the first part 151. A first sealing element 211 is provided at a position in the axial direction of the pressure-reducing valve core 21. The pressure-reducing valve core 21 is fixed to the middle of the pressure-reducing diaphragm 22 and moves axially within the pressure-reducing channel 14. It has a first position where the first sealing element 211 forms a sealing fit with the pressure-reducing channel 14, and a second position where the first sealing element 211 is disengaged from the pressure-reducing channel 14.

[0035] When the water pressure in the inlet channel is too high, the pressure-reducing diaphragm 22 deforms towards the second part 152 and drives the pressure-reducing valve core 21 to move the first sealing element 211 from the second position to the first position, blocking the connection between the sealing water channel 12 and the outlet water channel 13.

[0036] When the water pressure in the inlet channel is too high, the pressure-reducing valve core moves, causing the first sealing element to be positioned at the first position and forming a seal with the pressure-reducing channel, ensuring the pressure-reducing effect. Simultaneously, in the event of downstream device failure or blockage of the downstream water circuit, because the first sealing element and the pressure-reducing channel are in a sealed state, the static water pressure is stable, preventing water flow in the inlet channel from entering the pressure-reducing chamber, and the lower water pressure will not continue to rise, thereby reducing the risk of downstream pipeline leakage and ensuring the safety of downstream equipment. A first sealing groove 212 is provided around the pressure-reducing valve core 21 at a position in the axial direction. The first sealing element 211 is connected within the first sealing groove 212, and the first sealing groove 212 restricts the axial movement of the first sealing element 211.

[0037] This design improves the stability of the engagement between the first seal and the pressure-reducing valve core, as well as the stability of the engagement between the first seal and the pressure-reducing channel when the first seal is in the first position. Specifically, the first seal is a sealing ring.

[0038] A limiting protrusion 213 is provided at a position in the axial direction of the pressure reducing valve core 21. The limiting protrusion 213 is located on the side of the first seal 211 away from the pressure reducing channel 14 and restricts the first seal 211 from moving into the pressure reducing chamber 15.

[0039] This design further improves the stability of the seal between the first seal and the pressure relief channel when the first seal is in the first position, making it less prone to excessive movement. In this embodiment, the limiting protrusion is specifically a convex ring.

[0040] The water inlet 101 is connected to a water inlet connector assembly, which includes a connector seat 31 communicating with the water inlet 101 and a water inlet connector 32 connected to the end of the connector seat 31 away from the water inlet 101. The water inlet connector 32 has a water inlet 321.

[0041] This feature allows for quick connection to external pipes via the inlet connector, thereby improving the flexibility and convenience of connecting the inlet channel when using this inlet valve.

[0042] The connector 31 is internally connected to a filter element 33.

[0043] This setup allows the filter to filter impurities from the external water source, preventing impurities from flowing into the valve body and causing valve core seal failure or pressure reduction failure of the downstream pressure reducing component.

[0044] The inner cavity of the connector seat 31, from the end furthest from the water inlet end 101 to the end closest to the water inlet end 101, includes a first cavity 311, a second cavity 312, a third cavity 313, and a fourth cavity 314 connected in sequence. The connector seat 31 is inserted into the first cavity 311, and the fourth cavity 314 is inserted into the water inlet end 101 of the valve body 1.

[0045] The second cavity 312 is smaller than the third cavity 313 and forms a second limiting step 316 with it. The filter element 33 is connected to the third cavity 313 and is axially limited between the second limiting step 316 and the water inlet 101.

[0046] This design improves the ease of assembly and disassembly of the inlet connector assembly and filter element, and facilitates the cleaning of impurities adhering to the inlet connector assembly and filter element.

[0047] The filter element 33 includes a support frame 331 and a filter screen 332 connected to the support frame 331. The support frame 331 includes a first ring portion 3311 adapted to the shape of the third cavity portion 313 and a connecting plate portion 3312 connected to the inner circumference of the first ring portion 3311 and abutting against the filter screen 332 and the water inlet end 101 at both ends respectively.

[0048] This design improves the stability of the filter element connected to the connector seat, while the support frame ensures the flow rate of the filtered liquid to the valve body inlet.

[0049] The second cavity 312 is smaller than the first cavity 311 and forms a first limiting step 315 therewith. The first cavity 311 is connected to a second sealing member 320 that abuts against the first limiting step 315.

[0050] This design improves the sealing effect between the external pipe and the connector, reducing the likelihood of leakage. Simultaneously, this structure enhances the connection stability between the second seal and the connector. The second seal is specifically a sealing ring.

[0051] The fourth cavity 314 is larger than the third cavity 313 and forms a third limiting step 317 with it. The water inlet 101 is provided with a fourth limiting step 318 around the outer periphery of the end near the fourth cavity 314. The water inlet 101 is fitted with a third sealing member 319 that is axially limited between the third limiting step 317 and the fourth limiting step 318 and forms a seal between the water inlet 101 and the fourth cavity 314.

[0052] This design improves the sealing effect between the water inlet and the connector seat, further enhancing the overall sealing performance of the device. The third seal is specifically a sealing ring.

[0053] Example 2

[0054] This embodiment provides a coffee machine, which includes a housing and a water inlet valve with pressure reduction function as described in Embodiment 1. The water inlet valve is integrated into the housing, and the housing has a water inlet pipe connected to the water inlet end 101 and a water outlet pipe connected to the water outlet end 102.

[0055] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A pressure-reducing inlet valve, comprising a valve body (1), the valve body (1) having an inlet end (101) and an outlet end (102), an inlet flow channel and an outlet channel (13) being connected between the inlet end (101) and the outlet end (102), a pressure-reducing component for limiting the outlet water pressure being provided between the inlet flow channel and the outlet channel (13), the pressure-reducing component comprising a pressure-reducing valve core (21), a pressure-reducing diaphragm (22) and a pressure-reducing spring (23), the valve body (1) A pressure-reducing channel (14) and a pressure-reducing chamber (15) are sequentially connected between the inlet channel and the outlet channel (13). The pressure-reducing diaphragm (22) is located inside the pressure-reducing chamber (15) and divides the pressure-reducing chamber (15) into a first part (151) and a second part (152). The first part (151) is connected to the inlet channel. The pressure-reducing spring (23) is located inside the second part (152) and deforms the pressure-reducing diaphragm (22) toward the first part (151). The feature is that: A first sealing element (211) is provided at a position in the axial direction of the pressure reducing valve core (21). The pressure reducing valve core (21) is fixed to the middle of the pressure reducing diaphragm (22) and moves axially in the pressure reducing channel (14). It has a first position in which the first sealing element (211) and the pressure reducing channel (14) form a sealing fit, and a second position in which the first sealing element (211) and the pressure reducing channel (14) are disengaged. When the water pressure in the inlet channel is too high, the pressure-reducing diaphragm (22) deforms towards the second part (152) and drives the pressure-reducing valve core (21) to move, causing the first seal (211) to move from the second position to the first position, blocking the connection between the inlet channel and the outlet channel (13).

2. The water inlet valve with pressure reducing function according to claim 1, characterized in that: The pressure reducing valve core (21) is provided with a first sealing groove (212) at a position in the axial direction. The first sealing element (211) is connected in the first sealing groove (212) and the first sealing groove (212) restricts the axial movement of the first sealing element (211).

3. The water inlet valve with pressure reducing function according to claim 1, characterized in that: A limiting protrusion (213) is provided at a position in the axial direction of the pressure reducing valve core (21). The limiting protrusion (213) is located on the side of the first seal (211) away from the pressure reducing channel (14) and restricts the first seal (211) from moving into the pressure reducing chamber (15).

4. A water inlet valve with pressure reducing function according to any one of claims 1-3, characterized in that: The water inlet end (101) is connected to a water inlet connector assembly, which includes a connector seat (31) communicating with the water inlet end (101) and a water inlet connector (32) connected to the end of the connector seat (31) away from the water inlet end (101). The water inlet connector (32) has a water inlet (321).

5. A water inlet valve with pressure reducing function according to claim 4, characterized in that: The connector (31) is internally connected to a filter element (33).

6. A water inlet valve with pressure reducing function according to claim 5, characterized in that: The inner cavity of the connector seat (31) from the end furthest from the water inlet end (101) to the end closest to the water inlet end (101) includes a first cavity (311), a second cavity (312), a third cavity (313), and a fourth cavity (314) connected in sequence. The connector seat (31) is inserted into the first cavity (311), and the fourth cavity (314) is inserted into the water inlet end (101) of the valve body (1). The second cavity (312) is smaller than the third cavity (313) and forms a second limiting step (316) with it. The filter element (33) is connected to the third cavity (313) and is axially limited between the second limiting step (316) and the water inlet (101).

7. A water inlet valve with pressure reducing function according to claim 6, characterized in that: The filter element (33) includes a support frame (331) and a filter screen (332) connected to the support frame (331). The support frame (331) includes a first ring portion (3311) adapted to the shape of the third cavity (313) and a connecting plate portion (3312) connected to the inner circumference of the first ring portion (3311) and abutting the filter screen (332) and the water inlet end (101) at both ends respectively.

8. A water inlet valve with pressure reducing function according to claim 6, characterized in that: The second cavity (312) is smaller than the first cavity (311) and forms a first limiting step (315) with it. The first cavity (311) is connected to a second sealing element (320) that abuts against the first limiting step (315).

9. A water inlet valve with pressure reducing function according to claim 6, characterized in that: The fourth cavity (314) is larger than the third cavity (313) and forms a third limiting step (317) with it. The water inlet (101) is provided with a fourth limiting step (318) around the outer periphery of the end near the fourth cavity (314). The water inlet (101) is fitted with a third sealing element (319) that is axially limited between the third limiting step (317) and the fourth limiting step (318) and forms a seal between the water inlet (101) and the fourth cavity (314).

10. A coffee machine, characterized in that: It includes a housing and a water inlet valve with pressure reducing function as described in any one of claims 1-9, the water inlet valve being integrated into the housing, the housing having a water inlet pipe connected to the water inlet end (101) and a water outlet pipe connected to the water outlet end (102).

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