Solenoid valve and water purifier

Abstract

The electromagnetic valve comprises a valve body, a filter element and an electromagnetic valve element assembly, a first passage and a second passage are arranged in the valve body, a water inlet, a first water outlet and a second water outlet are formed in the surface of the valve body, the water inlet is communicated with the first water outlet through the first passage, the filter element is installed in the first passage, and the second water outlet is communicated with the second passage. The length direction of the filter element is consistent with the water flow direction of the first channel, the second water outlet sequentially passes through the second channel, an inner cavity of the filter element and filter holes in the surface of the filter element to be communicated with the first channel, and the electromagnetic valve element assembly is used for opening and closing the second channel. The filter element is arranged in the first passage, so that when a user uses water at the first water outlet every time, water flowing into the first passage from the water inlet flushes the surface of the filter element, impurities are discharged from the first water outlet along with water flow, and the length direction of the filter element is consistent with the water flow direction of the first passage; the water flow direction is consistent with the length direction of the filter element, the resistance is reduced, and the flushing effect is improved.

Description

Technical Field

[0001] This utility model relates to an electromagnetic valve and a water purifier. Background Technology

[0002] Solenoid valves are used in many products, especially water purification products, where they control the flow of water. Water purification products typically have solenoid valves installed before the membrane filter or booster unit. These valves generally have an internal structure for controlling the flow, with a small orifice in the sealing element. Currently, many solenoid valve failures are due to blockage of this orifice. To address this issue, some solenoid valves incorporate a filter structure, placing the sealing element after the filter. This filter removes impurities from the water, preventing them from clogging the orifice and causing a poor seal. However, after prolonged use, these types of solenoid valves tend to accumulate impurities on the filter structure, resulting in a lower water flow rate downstream of the filter, which may not meet user needs. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a solenoid valve and a water purifier.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] An electromagnetic valve includes a valve body, a filter element, and an electromagnetic valve core assembly. The valve body has a first passage and a second passage inside, and an inlet, a first outlet, and a second outlet on its surface. The inlet is connected to the first outlet through the first passage. The filter element is installed in the first passage, and the length direction of the filter element is consistent with the water flow direction of the first passage. The second outlet is connected to the first passage in sequence through the second passage, the inner cavity of the filter element, and filter holes on the surface of the filter element. The electromagnetic valve core assembly is used to open and close the second passage.

[0006] In this design, the solenoid valve has an inlet, a first outlet, and a second outlet. A filter element is installed upstream of the second passage, allowing purified water to be obtained at the second outlet. The filter element removes impurities from the water entering the second passage, eliminating their impact on the downstream solenoid valve core assembly and preventing its failure. The filter element is positioned within the first passage so that each time the user uses water at the first outlet, the water flowing from the inlet washes the surface of the filter element, causing impurities to be discharged with the water flow from the first outlet. This prevents the filter element from becoming clogged due to prolonged impurity retention. Furthermore, the length of the filter element is aligned with the water flow direction in the first passage, ensuring that the water flow direction is consistent with the length of the filter element. This allows the water to wash the filter element from the side, reducing resistance and improving the rinsing effect.

[0007] Preferably, the inlet and the first outlet are respectively located at both ends of the valve body and are on the same axis.

[0008] In this solution, the above-mentioned structural arrangement is adopted so that the inlet and the first outlet are on the same straight line, which reduces water resistance, increases the impact force of water flow on impurities on the filter element set in the first passage, and facilitates the discharge of impurities from the first outlet.

[0009] Preferably, the valve body has a mounting portion, one end of the filter element is mounted to the valve body through the mounting portion, and the inner cavity of the filter element is connected to the second passage through the inner cavity of the mounting portion.

[0010] In this design, the mounting section is used both to install the filter element and to connect the inner cavity of the filter element with the first passage, thus simplifying the structural design.

[0011] Preferably, the mounting part has an L-shaped structure, one end of the L-shaped structure is connected to the inner wall of the valve body, and the end of the L-shaped structure used to connect the filter element extends along the direction of the axis.

[0012] In this design, the L-shaped mounting section facilitates the processing and fabrication of the mounting section and the flow channels within it. One end of the L-shape extends axially, allowing for easy connection and installation between the inner cavity of the mounting section and the inner cavity of the filter element. This also ensures that after the filter element is fixed to the mounting section, the filter element and the mounting section connected to it remain in the same direction, reducing resistance to water flow and improving the flushing effect.

[0013] Preferably, the filter element includes a filter screen and a plug. The filter screen forms a cylindrical structure with openings at both ends. One end of the cylindrical structure is connected to the inner cavity of the mounting portion, and the plug is installed at the other end of the cylindrical structure.

[0014] In this solution, a cylindrical structure with open ends is formed by winding the filter screen. This allows for the use of the existing filter holes on the filter screen without the need for drilling. It also facilitates the connection between the openings of the cylindrical structure and the inner cavity of the mounting part, simplifying the manufacturing process.

[0015] In an alternative solution, the filter element can also be injection molded as a single piece, or the filter pores on the surface of the filter element and the inner cavity of the filter element can be machined.

[0016] Preferably, the solenoid valve further includes a fixing member, and the other end of the filter element is mounted to the valve body through the fixing member, or the other end of the filter element is mounted to the valve body through the plug and the fixing member, the plug being connected to the fixing member, and the fixing member being connected to the valve body.

[0017] In this solution, the above-mentioned structural configuration is adopted so that both ends of the filter element are fixed to the valve body, thereby improving the fixing effect of the filter element.

[0018] Preferably, the solenoid valve further includes an impeller, which is mounted on the valve body and located upstream of the filter element. The axial direction of the impeller is consistent with the length direction of the filter element, and the impeller is rotatable relative to the valve body.

[0019] In this design, a rotatable impeller is installed upstream of the filter element. When water flows, the water flow drives the impeller to rotate, and the impeller disturbs the water flow, thereby improving the cleaning effect of the filter element.

[0020] Preferably, the second passage includes a valve cavity, a protruding valve seat is provided in the middle of the valve cavity, a sealing port is provided on the valve seat, one end of the valve cavity is connected to the first passage through the inner cavity of the valve core and the filter hole, and the other end of the valve cavity is connected to the second outlet through the sealing port. The electromagnetic valve core assembly includes a magnetic valve stem, an elastic sealing element, an elastic element and a coil. The sealing element is connected to the inner wall of the valve body around its perimeter and abuts against the sealing port. The sealing element has a through hole corresponding to the sealing port. The valve stem slides on the valve body. The elastic element is disposed between the valve stem and the valve body. The coil is sleeved on the valve stem. The coil is configured to drive the valve stem to slide along its own axial direction when energized, so that the end of the valve stem seals or opens the through hole.

[0021] In this design, the coil generates a magnetic force when energized. This magnetic force interacts with the magnetic force of the valve stem, thereby pushing the valve stem to slide and opening or closing the solenoid valve.

[0022] When the elastic element is configured to close the through-hole, it applies a force that pulls the valve stem toward the valve seat. When the coil is energized, this generates a force that pulls the valve stem away from the valve seat. When the elastic element is configured to open the through-hole, it applies a force that pulls the valve stem away from the valve seat. When the coil is energized, this generates a force that pulls the valve stem closer to the valve seat.

[0023] Taking a normally closed solenoid valve as an example, when the coil is energized, the end of the valve stem disengages from the through hole on the seal. The pressure on one side of the seal is relieved, and the inlet water pressure can push up the elastic seal, opening the seal and allowing water to pass smoothly through. When the coil is de-energized, the valve stem, under the force of the elastic element, blocks the through hole.

[0024] Preferably, the sealing element divides the valve cavity into a sealed first cavity and a second cavity. The sealing element is provided with a pressure relief hole, which is offset from the valve seat. The first cavity is connected to the first passage. When the first cavity seals the through hole at the end of the valve stem, it is also connected to the second cavity through the pressure relief hole.

[0025] In this scheme, in order to reduce the force of driving the seal, a pressure relief hole is provided on the seal. When the valve stem blocks the through hole under the force of the elastic element, water enters the second cavity through the pressure relief hole on the seal. The pressure in the second cavity increases, so that the pressure on both sides of the seal is balanced. Under the action of the valve stem, the seal closes the second passage, thereby reducing the force exerted by the valve stem on the seal.

[0026] A water purifier includes a solenoid valve as described above, wherein the inlet of the water purifier is connected to the second outlet of the solenoid valve.

[0027] In this solution, the solenoid valve can filter tap water, protecting the valve's seal from blockage by impurities and preventing valve malfunction. Specifically, it ensures that the solenoid valve, under the control of the controller, can shut off the water supply at any time when the downstream filter assembly needs to cut off the water flow.

[0028] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0029] The positive and progressive effects of this utility model are as follows: The solenoid valve has an inlet, a first outlet, and a second outlet. A filter element is installed upstream of the second passage, allowing purified water to be obtained at the second outlet. The filter element removes impurities from the water entering the second passage, eliminating the impact of impurities on the downstream solenoid valve core assembly and preventing its failure. By placing the filter element within the first passage, each time the user uses water at the first outlet, the water flowing from the inlet into the first passage washes the surface of the filter element, causing impurities to be discharged with the water flow from the first outlet. This prevents the filter element from clogging due to prolonged impurity retention. Furthermore, the length direction of the filter element is aligned with the water flow direction in the first passage, ensuring that the water flow direction is consistent with the length direction of the filter element. This allows the water flow to wash the filter element from the side, reducing resistance and improving the rinsing effect. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a solenoid valve according to a preferred embodiment of the present invention. Figure 1 .

[0031] Figure 2 This is a schematic diagram of the structure of a solenoid valve according to a preferred embodiment of the present invention. Figure 2 .

[0032] Figure 3 for Figure 2 Cross-sectional view along line AA.

[0033] Figure 4 This is a schematic diagram of the internal partial structure of the valve body according to a preferred embodiment of the present invention. Figure 1 (The seal abuts against the valve seat).

[0034] Figure 5 This is a schematic diagram of the internal partial structure of the valve body according to a preferred embodiment of the present invention. Figure 2 .

[0035] Explanation of reference numerals in the attached figures:

[0036] Valve body 1

[0037] First Pathway 11

[0038] Second Pathway 12

[0039] Valve chamber 121

[0040] First cavity 1211

[0041] Second cavity 1212

[0042] Valve seat 122

[0043] Sealing port 1221

[0044] Installation Department 13

[0045] Inlet 101

[0046] First outlet 102

[0047] Second outlet 103

[0048] Filter 2

[0049] Filter 21

[0050] Plug 22

[0051] Solenoid valve core assembly 3

[0052] Valve stem 31

[0053] Seal 32

[0054] Through hole 321

[0055] Pressure relief hole 322

[0056] Elastic element 33

[0057] Coil 34

[0058] Fastener 4

[0059] Impeller 5

[0060] 100 in the length direction

[0061] Axis 200 Detailed Implementation

[0062] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0063] like Figures 1-5 As shown, this embodiment discloses a solenoid valve, which includes a valve body 1, a filter element 2, and a solenoid valve core assembly 3. The valve body 1 has a first passage 11 and a second passage 12 inside. The surface of the valve body 1 has an inlet 101, a first outlet 102, and a second outlet 103. The inlet 101 is connected to the first outlet 102 through the first passage 11. The filter element 2 is installed in the first passage 11, and the length direction 100 of the filter element 2 is consistent with the water flow direction of the first passage 11. The second outlet 103 is connected to the first passage 11 in sequence through the second passage 12, the inner cavity of the filter element 2, and the filter hole on the surface of the filter element 2. The solenoid valve core assembly 3 is used to open and close the second passage 12.

[0064] like Figures 1-5 As shown, in this embodiment, the solenoid valve has an inlet 101, a first outlet 102, and a second outlet 103. A filter element 2 is installed upstream of the second passage 12, and purified water can be obtained at the second outlet 103. The filter element 2 can filter out impurities in the water entering the second passage 12, eliminating the impact of impurities on the downstream solenoid valve core assembly 3 and preventing the solenoid valve core assembly 3 from failing. The filter element 2 is placed in the first passage 11 so that every time the user uses water at the first outlet 102, the water flowing into the first passage 11 from the inlet 101 will wash the surface of the filter element 2, causing impurities to be discharged from the first outlet 102 with the water flow, preventing the filter element 2 from trapping impurities for a long time and causing blockage. Furthermore, the length direction 100 of the filter element 2 is aligned with the water flow direction of the first passage 11 to ensure that the water flow direction is consistent with the length direction 100 of the filter element 2, so that the water flow washes the filter element 2 from the side, reducing resistance and improving the rinsing effect.

[0065] like Figures 1-3 As shown, the inlet 101 and the first outlet 102 are respectively located at both ends of the valve body 1 and on the same axis 200, so that the inlet 101 and the first outlet 102 are on the same straight line, reducing water resistance and increasing the impact force of water flow on impurities on the filter element 2 set in the first passage 11, so that impurities can be discharged from the first outlet 102.

[0066] like Figure 3As shown, the valve body 1 has a mounting part 13. One end of the filter element 2 is mounted to the valve body 1 through the mounting part 13, and the inner cavity of the filter element 2 is connected to the second passage 12 through the inner cavity of the mounting part 13. The mounting part 13 is used both to mount the filter element 2 and to connect the inner cavity of the filter element 2 to the first passage 11, simplifying the structural design.

[0067] like Figure 3 As shown, the mounting part 13 has an L-shaped structure. One end of the L-shaped structure is connected to the inner wall of the valve body 1, and the end of the L-shaped structure used to connect the filter element 2 extends along the axis 200. The L-shaped mounting part 13 facilitates the processing and fabrication of the mounting part 13 and the flow channel within it. The axial extension of one end of the L-shaped structure facilitates the mating and installation of the inner cavity of the mounting part 13 with the inner cavity of the filter element 2. This also ensures that after the filter element 2 is fixed to the mounting part 13, the filter element 2 and the mounting part 13 connected to it are aligned in the same direction, reducing resistance to water flow and improving the flushing effect.

[0068] like Figure 3 As shown, in this embodiment, the filter element 2 includes a filter screen 21 and a plug 22. The filter screen 21 forms a cylindrical structure with openings at both ends. One end of the cylindrical structure communicates with the inner cavity of the mounting part 13, and the plug 22 is installed at the other end of the cylindrical structure. By winding the filter screen 21 to form a cylindrical structure with openings at both ends, it is convenient to utilize the existing filter holes on the filter screen 21 without drilling. It also facilitates the connection between the openings of the cylindrical structure and the inner cavity of the mounting part 13, simplifying the manufacturing process.

[0069] In an alternative embodiment, the filter element may also be injection molded as a single piece.

[0070] In another alternative embodiment, the filter element can be manufactured by machining the inner cavity and filter holes on the surface of a cylinder.

[0071] In this embodiment, the solenoid valve also includes a fixing member 4. The other end of the filter element 2 is installed on the valve body 1 via a plug 22 and the fixing member 4. The plug 22 is connected to the fixing member 4, and the fixing member 4 is connected to the valve body 1, thereby fixing both ends of the filter element 2 to the valve body 1 and improving the fixing effect of the filter element 2.

[0072] In an optional embodiment, the other end of the filter element is directly mounted to the valve body via a fastener, so that both ends of the filter element are fixed to the valve body, thereby improving the fixing effect of the filter element.

[0073] In this embodiment, the solenoid valve also includes an impeller 5, which is fitted onto the extension of the plug 22, such that the impeller 5 is positioned close to the filter element 2. When water flows, the water flow drives the impeller 5 to rotate, and the impeller 5 agitates the water flow, improving the cleaning effect of the filter element 2.

[0074] In an optional embodiment, the impeller is mounted on the valve body and located upstream of the filter element, with the impeller's axial direction aligned with the length direction of the filter element, and the impeller is capable of rotating relative to the valve body. The impeller agitates the water flow, improving the cleaning effect of the filter element.

[0075] like Figures 3-5 As shown, the second passage 12 includes a valve chamber 121, with a protruding valve seat 122 in the middle of the valve chamber 121. A sealing port 1221 is provided on the valve seat 122. One end of the valve chamber 121 communicates with the first passage 11 through the inner cavity of the valve core and the filter hole. The other end of the valve chamber 121 communicates with the second outlet 103 through the sealing port 1221. The electromagnetic valve core assembly 3 includes a magnetic valve stem 31, an elastic sealing element 32, an elastic element 33, and a coil 34. The sealing element 32 is connected to the inner wall of the valve body 1 on all four sides, and abuts against the sealing port 1221. The sealing element 32 has a through hole 321 corresponding to the sealing port 1221. The valve stem 31 slides on the valve body 1. An elastic element 33 is disposed between the valve stem 31 and the valve body 1. A coil 34 is sleeved on the valve stem 31. The coil 34 is configured to drive the valve stem 31 to slide along its own axial direction when energized, so that the end of the valve stem 31 seals or opens the through hole 321. When the coil 34 is energized, it generates a magnetic force, which interacts with the magnetic force of the valve stem 31, thereby pushing the valve stem 31 to slide, realizing the opening or closing of the solenoid valve. When the elastic element 33 is configured to make the valve stem 31 in the position of closing the through hole 321, the elastic element 33 applies a force that makes the valve stem 31 move towards the valve seat 122. When the coil 34 is energized, it generates a force that makes the valve stem 31 move away from the valve seat 122. When the elastic element 33 is configured to position the valve stem 31 in the open through hole 321, the elastic element 33 applies a force that moves the valve stem 31 away from the valve seat 122, and the coil 34 generates a force that moves the valve stem 31 closer to the valve seat 122 after being energized.

[0076] like Figure 3 As shown, taking a normally closed solenoid valve as an example, when the coil 34 is energized, the end of the valve stem 31 disengages from the through hole 321 on the seal 32. The pressure on one side of the seal 32 is relieved, and the inlet water pressure can push up the elastic seal 32, opening the sealing port 1221, allowing water to pass smoothly through the sealing port 1221. When the coil 34 is de-energized, the valve stem 31 pushes against the seal 32 under the force of the elastic element 33, and the seal 32 abuts against the valve seat 122. The lower end of the valve stem 31 blocks the through hole 321, thereby closing the sealing port 1221.

[0077] like Figure 3As shown, the sealing element 32 divides the valve chamber 121 into a sealed first chamber 1211 and a second chamber 1212. The sealing element 32 has a pressure relief hole 322, which is offset from the valve seat 122. The first chamber 1211 is connected to the first passage 11. When the valve stem 31 seals the through hole 321 at its end, the first chamber 1211 is also connected to the second chamber 1212 through the pressure relief hole 322. With the pressure relief hole 322 on the sealing element 32, when the valve stem 31 blocks the through hole 321 under the force of the elastic element 33, water enters the second chamber 1212 through the pressure relief hole 322. The pressure inside the second chamber 1212 increases, balancing the pressure on both sides of the sealing element 32. Under the action of the valve stem 31, the sealing element 32 closes the second passage 12, thereby reducing the force exerted by the valve stem 31 on the sealing element 32.

[0078] This embodiment also discloses a water purifier, which includes the solenoid valve as described above. The inlet of the water purifier is connected to the second outlet 103 of the solenoid valve. This solenoid valve can filter tap water, protecting the sealing port 1221 of the solenoid valve from blockage by impurities and preventing valve malfunction. In particular, it ensures that when the downstream filter assembly needs to cut off the water flow, the solenoid valve, under the action of the controller, can cut off the water flow at any time.

[0079] In the description herein, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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 utility model.

[0080] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. An electromagnetic valve characterized by comprising: The electromagnetic valve comprises a valve body, a filter element and an electromagnetic valve core assembly, the valve body has a first passage and a second passage in the interior, the surface of the valve body has a water inlet, a first water outlet and a second water outlet, the water inlet is communicated with the first water outlet through the first passage, the filter element is installed in the first passage, the length direction of the filter element is consistent with the water flow direction of the first passage, the second water outlet is communicated with the first passage through the second passage, the inner cavity of the filter element, and the filter hole on the surface of the filter element in sequence, and the electromagnetic valve core assembly is used for opening and closing the second passage.

2. The electromagnetic valve according to claim 1, wherein The water inlet and the first water outlet are respectively arranged at two ends of the valve body and located on the same axis.

3. The electromagnetic valve according to claim 2, wherein The valve body has a mounting portion in the interior, one end of the filter element is mounted on the valve body through the mounting portion, and the inner cavity of the filter element is communicated with the second passage through the inner cavity of the mounting portion.

4. The electromagnetic valve according to claim 3, wherein The mounting portion is in L-shaped structure, one end of the L-shaped structure is connected to the inner wall of the valve body, and the L-shaped structure is used for connecting one end of the filter element to extend along the direction of the axis.

5. The electromagnetic valve according to claim 4, wherein The filter element comprises a filter screen and a plug, the filter screen surrounds a cylindrical structure with two open ends, one open end of the cylindrical structure is communicated with the inner cavity of the mounting portion, and the plug is installed on the other open end of the cylindrical structure.

6. The electromagnetic valve according to claim 5, wherein The electromagnetic valve further comprises a fixing member, the other end of the filter element is installed on the valve body through the fixing member, or the other end of the filter element is installed on the valve body through the plug and the fixing member, the plug is connected to the fixing member, and the fixing member is connected to the valve body.

7. The electromagnetic valve according to claim 1, wherein The electromagnetic valve further comprises an impeller, the impeller is installed on the valve body and located upstream of the filter element, the axial direction of the impeller is consistent with the length direction of the filter element, and the impeller can rotate relative to the valve body.

8. The electromagnetic valve according to claim 1, wherein The second passage comprises a valve cavity, a convex valve seat is arranged in the middle of the valve cavity, a sealing opening is arranged on the valve seat, one end of the valve cavity is communicated with the first passage through the inner cavity of the valve core and the filter hole, the other end of the valve cavity is communicated with the second water outlet through the sealing opening, the electromagnetic valve core assembly comprises a magnetic valve rod, an elastic sealing member, an elastic element and a coil, the sealing member is connected to the inner wall of the valve body around, the sealing member abuts against the sealing opening, the sealing member has a through hole corresponding to the sealing opening, the valve rod is slidably arranged in the valve body, the elastic element is arranged between the valve rod and the valve body, the coil is sleeved on the valve rod, and the coil is configured to drive the valve rod to slide along the axial direction of the valve rod when powered on, so that the end of the valve rod seals or opens the through hole.

9. The electromagnetic valve according to claim 8, wherein The sealing member divides the valve cavity into airtight first and second cavities, a pressure relief hole is arranged on the sealing member, the pressure relief hole is arranged in a staggered manner with the valve seat, the first cavity is communicated with the first passage, and the first cavity is further communicated with the second cavity through the pressure relief hole when the end of the valve rod seals the through hole.

10. A water purifier characterized by comprising: The water purifier comprises the electromagnetic valve as claimed in any one of claims 1-9, and the inlet of the water purifier is connected to the second water outlet of the electromagnetic valve.

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