Flow adjusting device and water purifier comprising same

Abstract

The utility model provides a flow adjusting device and a water purifier comprising the same. The flow adjusting device comprises a first water passing pipe, a refrigerator, a first flow guide cover and a first elastic assembly, a first through hole and a second through hole are formed in the first flow guide cover, the first flow guide cover is connected to the refrigerating face or the heat dissipation face of the refrigerator, one end of the first elastic assembly is arranged in the first flow guide cover and attached to the refrigerating face or the heat dissipation face through the first through hole, and at least part of the first elastic assembly is made of shape memory alloy. The other end of the first elastic assembly extends out of the first flow guide cover through the second through hole. The water purifier comprises the flow adjusting device. The shape memory alloy deforms under the action of the refrigerator to drive the part, extending out of the second through hole, of the first elastic assembly to move, the first flow guide cover can limit deformation of the shape memory alloy in the first elastic assembly, and deformation generated when the shape memory alloy is heated or cooled at the first through hole can be amplified through the second through hole. Therefore, the displacement of the shape memory alloy is improved.

Description

Technical Field

[0001] This utility model relates to the field of water purifiers, and in particular to a flow regulating device and a water purifier including the same. Background Technology

[0002] In the field of fluid temperature control, existing technologies include mechanical temperature control valves, electronic proportional valves, and traditional shape memory alloy valves. Among these, the method of using the phase change properties of shape memory alloys (SMA) to drive the valve to change the flow ratio of hot and cold water pipes, thereby controlling the temperature, is currently a more commonly used control method.

[0003] However, traditional shape memory alloy (SMI) valves suffer from low strain output rate, resulting in a limited flow regulation range. Linear SMI drive rods can only achieve a strain output of 4-6%, requiring increased SMI length to reach the preset stroke and change the flow rate. However, increasing the SMI length not only increases costs but also makes the overall control device more bulky. For example, achieving 1mm of SMI deformation displacement requires an SMI length of over 20mm. Alternatively, increasing the temperature load can increase the SMI deformation. However, increasing the temperature consumes more energy, and the relationship between SMI deformation and temperature is not simple linear; higher temperature rises may only result in a smaller deformation displacement, wasting energy and failing to effectively solve the problem of insufficient deformation displacement leading to a limited flow regulation range. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defect of low strain output rate of shape memory alloy valves in the prior art, which leads to a limited flow regulation range, and to provide a flow regulation device and a water purifier including the same.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] This utility model provides a flow regulating device, which includes a first water pipe, a cooler, a first flow guide, and a first elastic component. The first flow guide has a first through hole and a second through hole at its two ends, the first through hole being larger than the second through hole. One end of the first flow guide with the first through hole is connected to the cooling surface or heat dissipation surface of the cooler, and the second through hole faces the first water pipe. A first opening is formed on the first water pipe at a position corresponding to the second through hole. One end of the first elastic component is disposed inside the first flow guide and is attached to the cooling surface or heat dissipation surface through the first through hole. At least the portion of the first elastic component disposed inside the first flow guide is a shape memory alloy, and the shape memory alloy fills at least 70% of the inner cavity volume of the first flow guide. The other end of the first elastic component extends out of the first flow guide through the second through hole, and the end of the first elastic component extending out of the second through hole extends into the first opening at least radially along the first water pipe.

[0007] In this design, the deformation of the shape memory alloy under the action of the cooler causes the portion of the first elastic component extending out of the second through-hole to move. The added first flow guide can limit the deformation of the shape memory alloy in the first elastic component under thermal expansion and contraction. Since the first through-hole is larger than the second through-hole, the deformation of the shape memory alloy caused by heating or cooling at the first through-hole will be amplified through the second through-hole. This is because the deformation volume of the shape memory alloy is constant, and the smaller the diameter of the second through-hole, the longer its length in the axial direction of the second through-hole, thereby increasing the displacement of the shape memory alloy. Since the first elastic component extends at least radially into the first water pipe, the portion of the first elastic component extending into the first opening will block the water flow in the pipe. The amplified displacement of the shape memory alloy can change the depth of the first elastic component extending into the first opening, thereby expanding the range of flow regulation. Furthermore, the amplification effect of the first flow guide is used to achieve the conversion from micro-temperature change to large displacement, effectively solving the problem of insufficient deformation displacement of the shape memory alloy.

[0008] Preferably, the first flow deflector is sealed to the cooler so that an inner cavity is formed between the flow deflector and the cooler, with only a second through hole as the outlet.

[0009] In this solution, the deformation of the shape memory alloy can be guided to the second through hole to the maximum extent, avoiding the shape memory alloy from being exposed at the connection between the cooler and the first guide shroud, thus preventing a loss in the total deformation of the shape memory alloy.

[0010] Preferably, the cross-sectional area of ​​the first flow guide gradually decreases from the first through hole to the second through hole; and / or, the first through hole and the second through hole are on the same axis.

[0011] In this design, the gradually decreasing cross-section allows the first guide shield to take on a funnel shape. The funnel-shaped slope can better guide the deformation of the shape memory alloy to concentrate at the second through-hole. Furthermore, the coaxiality of the first and second through-holes can prevent the deformation of the shape memory alloy from dispersing, maintaining the shortest distance between the first and second through-holes, thereby helping to improve the response speed of the shape memory alloy.

[0012] Preferably, the first elastic component includes a deformable portion disposed within the first flow guide and a flow-blocking portion extending out of the second through hole, the deformable portion being connected to the flow-blocking portion and the deformable portion filling the inner cavity of the flow guide; and / or, the flow-blocking portion extending radially into the first opening along the first water pipe, the flow-blocking portion being used to block water flow.

[0013] In this design, filling the first flow guide with the deformation section ensures that deformation is immediately transmitted to the flow-blocking section extending from the second through-hole, further improving the response time of the shape memory alloy. Furthermore, extending the flow-blocking section radially into the first water pipe, perpendicular to the water flow direction, improves the utilization rate of the shape memory alloy's deformation. This is because inserting it perpendicular to the water flow direction avoids causing a component of the deformation displacement in the water flow direction.

[0014] Preferably, when the first elastic component is attached to the cooling surface, an elastic element is provided between the first water pipe and the first flow guide, one end of the elastic element abuts against the outer wall of the first water pipe, and the other end of the elastic element abuts against the outer wall of the first flow guide; and / or, a valve groove is provided at the first opening of the first water pipe, the valve groove extending along the direction in which the first elastic component extends into the first opening and connecting to the outer wall of the first water pipe.

[0015] In this design, the elastic element can push the first flow guide to assist displacement when the shape memory alloy contracts during cooling, thereby further improving the response speed of the shape memory alloy during cooling. Furthermore, the valve groove at the first opening can guide the portion of the first elastic component extending into the first opening, preventing the first elastic component from detaching from the first opening and thus reducing the risk of failure of the flow regulating device.

[0016] Preferably, the flow regulating device further includes a second water pipe, one of which is supplied with cold water and the other with hot water. The first and second water pipes are respectively disposed on both sides of the refrigerator, with the first water pipe facing the cooling surface and the second water pipe facing the heat dissipation surface. The flow regulating device further includes a second flow guide, the first flow guide connected to the cooling surface and the second flow guide connected to the heat dissipation surface. The second flow guide has a third through hole and a fourth through hole at each end, the third through hole being larger than the fourth through hole. One end of the second flow guide with the third through hole is connected to the heat dissipation surface, and the fourth through hole... The hole faces the second water pipe; a second opening is formed on the second water pipe at a position corresponding to the third through hole; the flow regulating device further includes a second elastic component, one end of which is disposed inside the second flow guide and is attached to the heat dissipation surface through the third through hole, at least the portion of the second elastic component disposed inside the second flow guide is a shape memory alloy, and the shape memory alloy fills at least 70% of the inner cavity volume of the second flow guide, the other end of the second elastic component extends out of the second flow guide through the fourth through hole, and the end of the second elastic component extending out of the fourth through hole extends into the second opening at least in the radial direction of the second water pipe.

[0017] In this solution, by setting the same structure of a first flow guide shroud, a second flow guide shroud, a first water pipe, a second water pipe, a first elastic component, and a second elastic component on both sides of the cooler, it is possible to utilize both the cooling surface and the heat dissipation surface of the cooler simultaneously, thus avoiding the energy waste caused by using only one surface under normal circumstances.

[0018] Preferably, the flow regulating device further includes a housing, and a cooler is provided in the housing cavity. The cooler is connected to the housing cavity to divide the housing cavity into two independent chambers, with the cooling surface facing one chamber and the heat dissipation surface facing the other chamber.

[0019] In this design, dividing the containment cavity into two chambers by the refrigerator can increase the heat flux density within the chambers, thereby improving the heating or cooling efficiency of the refrigerator.

[0020] Preferably, the flow regulating device further includes a slot, which is disposed in the receiving cavity, and the latch of the slot faces the cooler, and the cooler is engaged with the latch.

[0021] In this solution, the above structure can be used to fix the refrigerator and improve the stability of the refrigerator installation.

[0022] Preferably, the slot has an open slot on the slot wall facing the cooling surface and / or the heat dissipation surface, and the first flow guide and / or the second flow guide are disposed on the open slot.

[0023] In this design, the open slot can prevent the first or second flow guide from interfering with the slot wall. At the same time, the clearance provided by the open slot can increase the contact area between the first or second elastic component inside the first or second flow guide and the cooler.

[0024] This utility model also provides a water purifier, which includes the flow regulating device described above.

[0025] In this design, the deformation of the shape memory alloy under the action of the cooler causes the portion of the first elastic component extending out of the second through-hole to move. The added first flow guide can limit the deformation of the shape memory alloy in the first elastic component under thermal expansion and contraction. Since the first through-hole is larger than the second through-hole, the deformation of the shape memory alloy caused by heating or cooling at the first through-hole will be amplified through the second through-hole, thereby increasing the displacement of the shape memory alloy. Since the first elastic component extends at least radially into the first water pipe, the portion of the first elastic component extending into the first opening will block the water flow in the pipe. The amplified displacement of the shape memory alloy can change the depth of the first elastic component extending into the first opening, thereby expanding the range of flow regulation. Furthermore, the amplification effect of the first flow guide is used to achieve the conversion from micro-temperature change to large displacement, effectively solving the problem of insufficient deformation displacement of the shape memory alloy.

[0026] The positive and progressive effects of this utility model are as follows:

[0027] This invention provides a flow regulating device and a water purifier including the same. The shape memory alloy deforms under the action of the cooler, causing the portion of the first elastic component extending out of the second through-hole to move. The added first flow guide can limit the deformation of the shape memory alloy in the first elastic component under thermal expansion and contraction. Since the first through-hole is larger than the second through-hole, the deformation of the shape memory alloy caused by heating or cooling at the first through-hole is amplified through the second through-hole, thereby increasing the displacement of the shape memory alloy. Because the first elastic component extends at least radially into the first water pipe, the portion of the first elastic component extending into the first opening will block the water flow in the pipe. The amplified displacement of the shape memory alloy can change the depth of the first elastic component extending into the first opening, thereby expanding the flow regulation range. Furthermore, the amplification effect of the first flow guide achieves the conversion from micro-temperature change to large displacement, effectively solving the problem of insufficient deformation displacement of the shape memory alloy. Attached Figure Description

[0028] Figure 1 This is a perspective view of the flow regulating device according to an embodiment of the present invention.

[0029] Figure 2 This is a schematic diagram of the structure of the first flow guide and the first elastic component in an embodiment of the present utility model.

[0030] Figure 3 This is a partial structural schematic diagram of the flow regulating device according to an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] Casing 1

[0033] Reception cavity 101

[0034] Chamber 102

[0035] First water pipe 2

[0036] First opening 201

[0037] Valve slot 202

[0038] Refrigerator 3

[0039] Refrigeration surface 301

[0040] Heat dissipation surface 302

[0041] First deflector 4

[0042] First through hole 401

[0043] Second through hole 402

[0044] First elastic component 5

[0045] Deformation part 501

[0046] Flow-blocking section 502

[0047] Connecting rod 503

[0048] 504 clasp

[0049] Elastic element 6

[0050] Second water pipe 7

[0051] Second opening 701

[0052] Second deflector 8

[0053] Third through hole 801

[0054] Fourth through hole 802

[0055] Second elastic component 9

[0056] Card Slot 10

[0057] Open-mouth trough 1001 Detailed Implementation

[0058] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0059] like Figures 1-3 As shown, this embodiment provides a flow regulating device, which includes a housing 1, a first water pipe 2, a cooler 3, a first flow guide 4, and a first elastic component 5. The housing 1 has an internal receiving cavity 101, within which the first water pipe 2, cooler 3, first flow guide 4, and first elastic component 5 are all disposed. The housing 1 has a through hole for the first water pipe 2 to pass through and exit. The cooler 3 has a cooling surface 301 and a heat dissipation surface 302. The cooling surface 301 is the side of the cooler 3 that cools down, and the heat dissipation surface 302 is the side of the cooler 3 that transfers heat during cooling. The first flow guide 4 has a first through hole 401 and a second through hole 402 at both ends. The first through hole 401 and the second through hole 402 are preferably circular, with the first through hole 401 being larger than the second through hole 402. One end of the first flow guide shroud 4 with the first through hole 401 is connected to the cooling surface 301 or the heat dissipation surface 302 of the cooler 3. In this embodiment, one end of the first flow guide shroud 4 with the first through hole 401 is connected to the cooling surface 301 of the cooler 3. The second through hole 402 faces the first water pipe 2, and a first opening 201 is opened on the first water pipe 2 at a position corresponding to the second through hole 402.

[0060] like Figure 2 As shown, the first elastic component 5 includes a deformable portion 501 disposed within the first flow guide shroud 4 and a flow-blocking portion 502 extending out of the second through hole 402. The deformable portion 501 is connected to the flow-blocking portion 502 and is in contact with the cooling surface 301. The fact that at least the portion of the first elastic component 5 disposed within the first flow guide shroud 4 is made of shape memory alloy means that at least the deformable portion 501 is made of shape memory alloy material, while the flow-blocking portion 502 can be made of other materials deemed suitable by those skilled in the art. The deformable portion 501 fills at least 70% of the inner cavity volume of the first flow guide shroud 4, thus ensuring sufficient deformation displacement of the deformable portion 501. The flow-blocking portion 502 extends at least radially into the first opening 201 along the first water pipe 2.

[0061] The flow-blocking part 502 does not need to be made of shape memory alloy; it can be made of 304 / 316 stainless steel. In other embodiments, it can also be made of brass, ceramic, or engineering plastics. The flow-blocking part 502 is a circular plate, and its diameter is larger than that of the second through hole 402.

[0062] Thus, the deformation of the shape memory alloy under the action of the cooler 3 will cause the part of the first elastic component 5 that extends out of the second through hole 402 to move. The added first guide shroud 4 can limit the deformation of the shape memory alloy in the first elastic component 5 under thermal expansion and contraction. Since the first through hole 401 is larger than the second through hole 402, the deformation of the shape memory alloy caused by heating or cooling at the first through hole 401 will be amplified through the second through hole 402. This is because the deformation volume of the shape memory alloy is constant. The smaller the aperture of the second through hole 402, the longer the length in the axial direction of the second through hole 402, thereby increasing the displacement of the shape memory alloy. Since the first elastic component 5 extends at least radially into the first water pipe 2, the portion of the first elastic component 5 extending into the first opening 201 will block the water flow inside the pipe. The amplified displacement of the shape memory alloy can change the depth of the first elastic component 5 extending into the first opening 201, thereby expanding the range of flow regulation. Furthermore, the amplification effect of the first guide shroud 4 is used to achieve the conversion from micro-temperature change to large displacement, effectively solving the problem of insufficient deformation displacement of the shape memory alloy.

[0063] In this embodiment, the first flow guide 4 is sealed to the cooler 3 so that an inner cavity is formed between the flow guide 4 and the cooler 3, with only the second through hole 402 serving as the outlet. The sealing connection can be achieved using sealant, a sealing ring, or other sealing methods deemed suitable by those skilled in the art.

[0064] In this way, the deformation of the shape memory alloy can be guided to the second through hole 402 to the maximum extent, avoiding the shape memory alloy from being exposed at the connection between the cooler 3 and the first guide shroud 4, thus preventing a loss in the total deformation of the shape memory alloy.

[0065] In this embodiment, as Figure 2 As shown, the cross-sectional area of ​​the first flow guide shroud 4 gradually decreases from the first through hole 401 to the second through hole 402. The gradually decreasing cross-section allows the first flow guide shroud 4 to be funnel-shaped, and the funnel-shaped slope can better guide the deformation of the shape memory alloy to concentrate at the second through hole 402.

[0066] In this embodiment, the first through hole 401 and the second through hole 402 are on the same axis. The coaxiality of the first through hole 401 and the second through hole 402 can prevent the deformation of the shape memory alloy from being dispersed, and keep the distance between the first through hole 401 and the second through hole 402 at the shortest possible distance, thereby helping to improve the response speed of the shape memory alloy.

[0067] In this embodiment, the deformation portion 501 fills the inner cavity of the flow guide shroud. The deformation portion 501 filling the first flow guide shroud 4 ensures that as soon as deformation occurs, it can be immediately transmitted to the flow blocking portion 502 extending from the second through hole 402, further improving the response time of the shape memory alloy.

[0068] In this embodiment, as Figure 1 As shown, the flow-blocking part 502 extends radially into the first opening 201 along the first water pipe 2, and the flow-blocking part 502 is used to block the water flow. The flow-blocking part 502 extending radially into the first water pipe 2, that is, perpendicular to the water flow direction, can improve the utilization rate of the shape memory alloy's deformation. This is because inserting it perpendicular to the water flow direction can avoid causing the deformation displacement to have a component in the water flow direction.

[0069] In this embodiment, when the first elastic component 5 is attached to the cooling surface 301, an elastic element 6 is provided between the first water pipe 2 and the first flow guide shroud 4, that is, an elastic element 6 is provided at the connection between the flow blocking part 502 and the deformation part 501. One end of the elastic element 6 abuts against the outer wall of the first water pipe 2, and the other end of the elastic element 6 abuts against the outer wall of the first flow guide shroud 4. The elastic element 6 can push the first flow guide shroud 4 to assist displacement when the shape memory alloy shrinks, thereby further improving the response speed of the shape memory alloy during shrinkage.

[0070] Furthermore, the elastic element 6 can be a spring, rubber, or other elastic material; in this embodiment, the elastic element 6 is a spring. When the cooler 3 is not working, the spring can be in its initial state or in a pre-compressed state. The flow-blocking part 502 and the deformation part 501 are connected by a connecting rod 503. The spring is sleeved on the connecting rod 503, and a retaining ring 504 extends radially from the connecting rod 503. One end of the spring abuts against the outer wall of the first water pipe 2, and the other end abuts against the end face of the retaining ring 504.

[0071] In this embodiment, a valve groove 202 is provided at the first opening 201 of the first water pipe 2. The valve groove 202 extends along the direction in which the first elastic component 5 extends into the first opening 201 and is connected to the outer wall of the first water pipe 2. Providing the valve groove 202 at the first opening 201 can guide the portion of the first elastic component 5 extending into the first opening 201, preventing the first elastic component 5 from detaching from the first opening 201, thereby reducing the risk of failure of the flow regulating device.

[0072] Specifically, such as Figure 1 As shown, the flow regulating device also includes a second water pipe 7, and the outer casing 1 is provided with a through hole for the second water pipe 7 to pass through and exit. One of the first water pipe 2 and the second water pipe 7 is supplied with cold water, and the other with hot water. In this embodiment, the first water pipe 2 is supplied with cold water, and the second water pipe 7 is supplied with hot water. The first water pipe 2 and the second water pipe 7 are respectively located on both sides of the cooler 3, with the first water pipe 2 facing the cooling surface 301 and the second water pipe 7 facing the heat dissipation surface 302.

[0073] The flow regulating device also includes a second flow guide shroud 8. The first flow guide shroud 4 is connected to the cooling surface 301, and the second flow guide shroud 8 is connected to the heat dissipation surface 302. The second flow guide shroud 8 has a third through hole 801 and a fourth through hole 802 at its two ends, respectively. The third through hole 801 is larger than the fourth through hole 802. The end of the second flow guide shroud 8 with the third through hole 801 is connected to the heat dissipation surface 302, and the fourth through hole 802 faces the second water pipe 7. A second opening 701 is opened on the second water pipe 7 at a position corresponding to the third through hole 801.

[0074] The flow regulating device further includes a second elastic component 9. One end of the second elastic component 9 is disposed inside the second flow guide shroud 8 and is attached to the heat dissipation surface 302 through a third through hole 801. At least the portion of the second elastic component 9 disposed inside the second flow guide shroud 8 is a shape memory alloy, and the shape memory alloy fills at least 70% of the inner cavity volume of the second flow guide shroud 8. Preferably, the shape memory alloy completely fills the inner cavity of the second flow guide shroud 8. The other end of the second elastic component 9 extends out of the second flow guide shroud 8 through a fourth through hole 802, and the end of the second elastic component 9 extending out of the fourth through hole 802 extends into the second opening 701 at least along the radial direction of the second water pipe 7.

[0075] Thus, by setting the same structure of the first flow guide shroud 4, the second flow guide shroud 8, the first water pipe 2, the second water pipe 7, the first elastic component 5 and the second elastic component 9 on both sides of the cooler 3, the cooling surface 301 and the heat dissipation surface 302 of the cooler 3 can be used at the same time, avoiding the energy waste caused by using only one surface under normal circumstances.

[0076] In this embodiment, preferably, the two sets of structures on both sides of the cooler 3 are symmetrically arranged with respect to the cooler 3, that is, the first flow guide shroud 4, the second flow guide shroud 8, the first elastic component 5, the second elastic component 9, the first water pipe 2, and the second water pipe 7 are symmetrically arranged with respect to the cooler 3.

[0077] In this embodiment, the refrigerator 3 divides the housing 101 into two independent chambers 102, with the cooling surface 301 facing one of the chambers 102 and the heat dissipation surface 302 facing the other chamber 102. Dividing the housing 101 into two chambers 102 by the refrigerator 3 can increase the heat flux density within the chambers 102, thereby improving the heating or cooling efficiency of the refrigerator 3.

[0078] Furthermore, the cooler 3 divides the receiving cavity 101 into two independent chambers 102.

[0079] In this embodiment, as Figure 3As shown, the flow regulating device also includes a slot 10, which is located within the receiving cavity 101, with the latch of the slot 10 facing the cooler 3, and the cooler 3 engaging with the latch. This structure can secure the cooler 3, improving the stability of its installation.

[0080] Furthermore, the cooler 3 and the slot 10 are interference-fitted to improve the sealing and tightness of the connection.

[0081] In this embodiment, as Figure 3 As shown, the slot 10 has an open slot 1001 on the slot wall facing the cooling surface 301, and the first flow guide 4 is disposed on the open slot 1001; or, the slot 10 has an open slot 1001 on the slot wall facing the heat dissipation surface 302, and the second flow guide 8 is disposed on the open slot 1001; or, the slot 10 has an open slot 1001 on both the slot wall facing the heat dissipation surface 302 and the slot wall facing the heat dissipation surface 302, and the first flow guide 4 and the second flow guide 8 are respectively disposed on the two open slots 1001.

[0082] Thus, the open slot 1001 can prevent interference between the first guide shield 4 or the second guide shield 8 and the slot wall of the slot 10. At the same time, the clearance of the open slot 1001 can also increase the contact area between the first elastic component 5 or the second elastic component 9 inside the first guide shield 4 or the second guide shield 8 and the cooler 3.

[0083] Furthermore, the shape of the opening slot 1001 matches the outer contour of the first fairing 4 and the second fairing 8.

[0084] Thus, the open slot 1001 can support the first shroud 4 or the second shroud 8 placed thereon, reducing the risk of the first shroud 4 or the second shroud 8 detaching from the cooling surface 301 or the heat dissipation surface 302 of the cooler 3.

[0085] Operating Procedure: After the cooler 3 starts, the heat dissipation surface 302 and the cooling surface 301 work simultaneously. By adjusting the output temperature of the cooler 3, the temperatures of the heating and cooling surfaces 301 are increased or decreased. When the power of the cooler 3 is increased, the shape memory material of the second elastic component 9, which is in contact with the heating surface, expands and overflows along the fourth outlet of the second guide shroud 8, pushing the flow-blocking part 502 towards the hot water channel of the second water pipe 7, thereby reducing the flow rate of the hot water channel. The shape memory material of the first elastic component 5, which is in contact with the cooling surface 301, contracts and retracts out of the second outlet of the first guide shroud 4, pulling the flow-blocking part 502 away from the cold water channel of the first water pipe 2, thereby increasing the flow rate of the cold water channel. When the power of the cooler 3 is decreased, the flow-blocking part 502 moves in the opposite direction, increasing the flow rate of the hot water channel in the second water pipe 7 and decreasing the flow rate of the cold water channel in the first water pipe 2. Therefore, when it is necessary to adjust the mixing temperature of the first water pipe 2 and the second water pipe 7, if hot water is needed, the power of the chiller 3 can be reduced, the area of ​​the first elastic component 5 blocking cold water in the first water pipe 2 can be increased, and the area of ​​the second elastic component 9 blocking hot water in the second water pipe 7 can be reduced. The opposite is true when cold water is needed.

[0086] This embodiment also provides a water purifier, which includes the flow regulating device as described above.

[0087] Thus, the deformation of the shape memory alloy under the action of the cooler 3 will cause the part of the first elastic component 5 extending out of the second through hole 402 to move. The added first flow guide 4 can limit the deformation of the shape memory alloy in the first elastic component 5 under thermal expansion and contraction. Since the first through hole 401 is larger than the second through hole 402, the deformation of the shape memory alloy caused by heating or cooling at the first through hole 401 will be amplified through the second through hole 402, thereby increasing the displacement of the shape memory alloy. Since the first elastic component 5 extends at least radially along the first water pipe 2, the part of the first elastic component 5 extending into the first opening 201 will block the water flow in the pipe. The amplified displacement of the shape memory alloy can change the depth of the first elastic component 5 extending into the first opening 201, thereby expanding the range of flow regulation. Furthermore, the amplification effect of the first flow guide 4 can realize the conversion from micro temperature change to large displacement, effectively solving the problem of insufficient deformation displacement of the shape memory alloy.

[0088] 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. A flow regulating device, characterized in that, It includes a first water pipe, a cooler, a first flow guide, and a first elastic component; The first guide shroud has a first through hole and a second through hole at both ends, the first through hole being larger than the second through hole. The end of the first guide shroud with the first through hole is connected to the cooling surface or heat dissipation surface of the cooler, and the second through hole faces the first water pipe. A first opening is made on the first water pipe at a position corresponding to the second through hole; One end of the first elastic component is disposed inside the first flow guide and is attached to the cooling surface or the heat dissipation surface through the first through hole. At least the portion of the first elastic component disposed inside the first flow guide is a shape memory alloy, and the shape memory alloy fills at least 70% of the inner cavity volume of the first flow guide. The other end of the first elastic component extends out of the first flow guide through the second through hole, and the end of the first elastic component extending out of the second through hole extends into the first opening at least along the radial direction of the first water pipe.

2. The flow regulating device as described in claim 1, characterized in that, The first flow guide is sealed to the cooler so that an inner cavity is formed between the flow guide and the cooler, with only a second through hole as the outlet.

3. The flow regulating device as described in claim 1, characterized in that, The cross-sectional area of ​​the first flow guide gradually decreases from the first through hole to the second through hole; And / or, the first through hole and the second through hole are on the same axis.

4. The flow regulating device as described in claim 1, characterized in that, The first elastic component includes a deformable part disposed within the first flow guide and a flow-blocking part extending out of the second through hole, the deformable part being connected to the flow-blocking part, and the deformable part filling the inner cavity of the flow guide; And / or, the flow-blocking part extends radially into the first opening along the first water pipe, and the flow-blocking part is used to block the water flow.

5. The flow regulating device as described in claim 1, characterized in that, When the first elastic component is attached to the cooling surface, an elastic element is provided between the first water pipe and the first flow guide cover. One end of the elastic element abuts against the outer wall of the first water pipe, and the other end of the elastic element abuts against the outer wall of the first flow guide cover. And / or, a valve groove is provided at the first opening of the first water pipe, the valve groove extending along the direction in which the first elastic component extends into the first opening and connected to the outer wall of the first water pipe.

6. The flow regulating device as described in claim 1, characterized in that, The flow regulating device further includes a second water pipe, one of which is connected to cold water and the other to hot water. The first water pipe and the second water pipe are respectively arranged on both sides of the cooler, with the first water pipe facing the cooling surface and the second water pipe facing the heat dissipation surface. The flow regulating device further includes a second flow guide shroud. The first flow guide shroud is connected to the cooling surface, and the second flow guide shroud is connected to the heat dissipation surface. The second flow guide shroud has a third through hole and a fourth through hole at both ends, the third through hole being larger than the fourth through hole. One end of the second flow guide shroud with the third through hole is connected to the heat dissipation surface, and the fourth through hole faces the second water pipe. A second opening is made on the second water pipe at a position corresponding to the third through hole; The flow regulating device further includes a second elastic component. One end of the second elastic component is disposed inside the second flow guide and is attached to the heat dissipation surface through the third through hole. At least the portion of the second elastic component disposed inside the second flow guide is a shape memory alloy, and the shape memory alloy fills at least 70% of the inner cavity volume of the second flow guide. The other end of the second elastic component extends out of the second flow guide through the fourth through hole, and the end of the second elastic component extending out of the fourth through hole extends into the second opening at least along the radial direction of the second water pipe.

7. The flow regulating device as described in claim 6, characterized in that, The flow regulating device also includes a housing, and a cooler is provided in the housing cavity. The cooler is connected to the housing cavity to divide the housing cavity into two independent chambers, with the cooling surface facing one chamber and the heat dissipation surface facing the other chamber.

8. The flow regulating device as described in claim 7, characterized in that, The flow regulating device further includes a slot, which is located in the receiving cavity, with the latch of the slot facing the cooler, and the cooler engaging with the latch.

9. The flow regulating device as described in claim 8, characterized in that, The slot has an open groove on the groove wall facing the cooling surface and / or the heat dissipation surface, and the first flow guide and / or the second flow guide are disposed on the open groove.

10. A water purifier, characterized in that, It includes the flow regulating device as described in any one of claims 1-9.

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