Constant-temperature valve core capable of rapidly discharging cold water

Abstract

The utility model provides a quick discharge cold water constant temperature valve core, which comprises a valve body, a base, a constant temperature valve rod, a driving piece and a temperature adjusting assembly, the valve body is provided with a cold water inlet and a hot water inlet, the temperature adjusting assembly is arranged in the valve body, and the constant temperature valve rod is connected with the temperature adjusting assembly through the driving piece. The temperature adjusting assembly comprises a piston, a memory alloy spring, a memory alloy reset spring and a hot water inlet sealing piece, the piston moves between the cold water inlet and the hot water inlet, and the memory alloy spring is arranged between the piston and the hot water inlet sealing piece. The hot water inlet sealing piece is arranged in the piston and forms a temperature sensing water channel which is communicated with the hot water inlet and extends towards the memory alloy spring, a hot water inlet gap is formed between the hot water inlet sealing piece and the hot water inlet, and the memory alloy reset spring is arranged on the side, opposite to the memory alloy spring, of the hot water inlet sealing piece. The memory alloy spring can drive the hot water inlet sealing piece to axially move so as to adjust the width of the hot water inlet gap; the water heater can accelerate discharge of cold water entering from the hot water inlet, and the time for waiting for hot water by a user is shortened.

Description

Technical Field

[0001] The utility model relates to the field of thermostatic valves, in particular to a rapid-discharge cold water thermostatic valve. Background Art

[0002] The thermostatic valve core is a device that automatically adjusts the mixing ratio of hot and cold water so that the temperature of the mixed water can be automatically maintained at the set temperature. In actual use, before the hot water reaches the thermostatic valve core from the water heater, a certain amount of cold water is stored in the pipe between the water heater and the thermostatic valve core. After the water heater is started, the hot water pushes the cold water to the thermostatic valve core. During this process, the hot water inlet of the thermostatic valve core first enters the cold water, and the discharge speed of the cold water is slow. The user needs to wait for a while before getting hot water. Utility Model Content

[0003] The utility model aims to provide a fast-discharging cold water thermostatic valve core which can accelerate the discharge of cold water and shorten the waiting time for hot water.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a fast-discharge cold water thermostatic valve core, including a valve body, a base, a thermostatic valve stem, a driving member and a thermostatic assembly. The valve body is connected to the base, the valve body is provided with a cold water inlet and a hot water inlet, the base is provided with a mixed water outlet, the thermostatic valve stem is connected to the valve body, the thermostatic assembly is arranged in the valve body, the driving member is connected between the thermostatic valve stem and the thermostatic assembly, the thermostatic valve stem can rotate around its axis, and then drive the thermostatic assembly to perform a thermostatic action through the driving member, the thermostatic assembly includes a piston, a memory alloy spring, a memory alloy reset spring and a hot water inlet sealing member, and the active The plug can move back and forth between the cold water inlet and the hot water inlet, the hot water inlet sealing member is arranged in the piston, and a temperature-sensitive water channel connected with the hot water inlet is formed between the hot water inlet sealing member and the piston, a memory alloy spring is arranged between the piston and the hot water inlet sealing member, the temperature-sensitive water channel extends toward the memory alloy spring, the memory alloy reset spring is arranged on the side of the hot water inlet sealing member facing away from the memory alloy spring, a hot water inlet gap is also formed between the hot water inlet sealing member and the hot water inlet, and the elongation of the memory alloy spring is variable to drive the hot water inlet sealing member to move along its axial direction, thereby adjusting the width of the hot water inlet gap.

[0005] It can be seen from the above scheme that by setting a temperature-sensitive water channel connected to the hot water inlet, when the water heater is just turned on, the cold water stored in the pipe between the water heater and the thermostatic valve core will first enter the temperature-sensitive water channel and flow toward the memory alloy spring channel, so that the memory alloy spring shortens its elongation at the temperature of the water. Under the action of the memory alloy reset spring, the hot water inlet water seal moves upward to increase the hot water inlet gap, which is conducive to speeding up the cold water discharge speed in the pipe, reducing the waiting time for hot water, and improving the user experience. When the cold water in the pipe is discharged, part of the hot water will enter the temperature-sensitive water channel, causing the memory alloy spring to extend its elongation at the hot water temperature, so as to drive the hot water inlet water seal to move downward, so as to reduce the hot water inlet gap and restore it to its original width, so as to facilitate hot water to enter the thermostatic valve core at a normal speed.

[0006] A further solution is that a first accommodating chamber and a second accommodating chamber are connected to each other inside the piston, a memory alloy spring is arranged in the first accommodating chamber, a hot water inlet sealing member is arranged in the second accommodating chamber and a temperature-sensitive water channel is formed between the hot water inlet sealing member and the cavity wall of the second accommodating chamber, and the temperature-sensitive water channel is connected to the first accommodating chamber; an annular flange is arranged on the outer side of one end of the hot water inlet sealing member, the annular flange extends toward the hot water inlet, a temperature-sensitive water inlet gap connected to the temperature-sensitive water channel is formed between the first side of the annular flange and the free end wall of the piston, and the hot water inlet gap is arranged on the second side of the annular flange.

[0007] It can be seen from the above scheme that by arranging the temperature-sensing water channel and the hot water inlet gap on the upper and lower sides of the annular flange respectively, the water entering from the hot water inlet is automatically divided into two streams, which does not affect the normal discharge of hot water, but can also sense the temperature of the hot water separately and automatically adjust the width of the hot water inlet gap according to the temperature.

[0008] A further solution is that the number of hot water inlets is set to multiple, the multiple hot water inlets are arranged along the circumference of the valve body, and the hot water inlets extend along the circumference of the valve body; the hot water inlet gap is set to be annular, and the hot water inlet gap is connected to the multiple hot water inlets respectively.

[0009] It can be seen from the above scheme that by setting the hot water inlet gap to be connected with multiple hot water inlets respectively, it is beneficial to increase the hot water inlet flow rate.

[0010] A further solution is that the temperature control component also includes a bracket and a temperature sensing element, the temperature sensing element is arranged in the piston, the bracket is arranged between the piston and the temperature sensing element, the hot water inlet sealing member is arranged between the bracket and the piston, the end of the piston close to the cold water inlet is connected to the first end of the bracket, and the second end of the bracket extends into the hot water inlet sealing member and is connected to the temperature sensing element; a first cold water channel is formed between the piston and the inner wall of the valve body, a second cold water channel is arranged inside the bracket, a through hole is opened in the lower part of the bracket, a third cold water channel is arranged inside the hot water inlet sealing member, and the cold water inlet is connected to the third cold water channel through the first cold water channel, the second cold water channel, and the through hole in sequence.

[0011] It can be seen from the above scheme that by setting a temperature sensing element, it is beneficial to achieve the constant temperature function of the mixed water; by setting the first cold water circuit, the second cold water circuit and the third cold water circuit, it is beneficial to prevent the cold water entering from the cold water inlet from entering the temperature sensing water channel, ensuring that the memory alloy spring is only affected by the temperature of the water entering from the hot water inlet.

[0012] A further solution is that a water mixing chamber is provided in the base, and the water mixing chamber is communicated with the hot water inlet gap and the third cold water channel respectively.

[0013] A further solution is that at least one first groove is formed on the outer peripheral wall of the piston, and a second groove is formed on the connecting end of the piston, and both the first groove and the second groove are connected to the first cold water circuit.

[0014] It can be seen from the above solution that the provision of the first groove and the second groove is helpful to increase the inlet flow rate of cold water.

[0015] A further solution is that the temperature control assembly also includes a regulating valve stem, a safety spring and a piston return spring, a driving member is connected between the thermostatic valve stem and the regulating valve stem, the safety spring elastically abuts between the regulating valve stem and the first end of the temperature sensing element, the second end of the temperature sensing element extends toward the mixed water outlet, and the piston return spring elastically abuts between the middle part and the base of the temperature sensing element; the thermostatic valve stem can rotate around its own axis, and then drive the regulating valve stem and the temperature sensing element to move axially through the driving member, so that the piston moves between the cold water inlet and the hot water inlet to adjust the cold water inlet and the hot water inlet.

[0016] It can be seen from the above scheme that by setting the piston return spring, when the outlet water temperature changes, the elongation of the temperature sensing element will change. Under the action of the piston return spring, the temperature sensing element can drive the piston to move, and then adjust the water intake of hot water and cold water to make the temperature of the mixed water basically remain unchanged, thereby realizing the constant temperature function; when the cold water supply fails, the temperature of the mixed water rises, the temperature sensing element elongates to drive the piston to move downward, and the piston closes the hot water inlet gap to ensure the safety of hot water; by setting a safety spring, when the temperature sensing element elongates to a certain value, the temperature sensing element moves upward and the safety spring is compressed, which is beneficial to prevent the temperature sensing element from excessive elongation, thereby increasing the service life of the sensing element.

[0017] A further solution is that a first stop is provided on the outer side of the regulating valve stem, and in the axial direction, there is a preset distance between the first stop and the piston, and when the regulating valve stem moves toward the mixed water outlet, the preset distance can be reduced to zero.

[0018] It can be seen from the above scheme that by setting the preset distance, it can be reduced to zero. When the preset distance is zero, the first stop portion abuts against the piston. After that, the regulating valve stem can directly drive the piston to move downward, which is beneficial to reduce the downward pressure applied to the temperature sensing element, thereby increasing the life of the temperature sensing element and reducing the maximum rotation angle of the thermostatic valve stem when cold water is discharged.

[0019] A further solution is that the driving member is a polygonal nut, the thermostatic valve stem is threadedly connected to the polygonal nut, and the polygonal nut abuts against the first stop portion; a polygonal structure is provided on the outside of the polygonal nut, a polygonal hole is provided in the valve body, and the polygonal structure is cooperatively connected to the polygonal hole.

[0020] A further solution is that the driving member is a polygonal threaded sleeve, which is provided with a threaded hole, a second stop portion and a mounting hole, the second stop portion is arranged at the bottom of the mounting hole, the thermostatic valve stem is threadedly connected to the threaded hole, the regulating valve stem is inserted into the mounting hole and abuts against the second stop portion; a polygonal structure is provided on the outside of the polygonal threaded sleeve, a polygonal hole is provided in the valve body, and the polygonal structure is cooperatively connected with the polygonal hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional view of the first embodiment of the utility model.

[0022] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0023] Figure 3 It is an exploded view of the first embodiment of the utility model.

[0024] Figure 4 It is an exploded view of the temperature adjustment component in the first embodiment of the utility model.

[0025] Figure 5 It is a cross-sectional view of the piston in the first embodiment of the utility model.

[0026] Figure 6 It is a cross-sectional view of the hot water inlet water sealing member in the first embodiment of the utility model.

[0027] Figure 7 It is a structural diagram of the bracket in the first embodiment of the utility model.

[0028] Figure 8 It is a structural diagram of the driving member in the first embodiment of the utility model.

[0029] Fig. 9 It is a cross-sectional view of the second embodiment of the utility model.

[0030] Fig.10 yes Fig. 9 Enlarged view of point B in the middle.

[0031] Fig.11 It is an exploded view of the second embodiment of the utility model.

[0032] Fig.12 It is an exploded view of the temperature adjustment component in the second embodiment of the utility model.

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0034] Rapid cold water thermostatic valve core embodiment:

[0035] See also Figures 1 to 4 The fast-discharge cold water thermostatic valve core provided in this embodiment includes a valve body 1, a base 2, a thermostatic valve stem 5, a driving member 4a and a thermostatic assembly 3. The valve body 1 is threadedly connected to the base 2, and the valve body 1 is provided with at least one cold water inlet 11 and at least one hot water inlet 12 arranged along its axial direction. Preferably, the cold water inlet 11 is arranged above the hot water inlet 12; a water mixing chamber 21 is provided in the base 2, and a water mixing outlet 22 communicating with the water mixing chamber 21 is provided on the bottom wall of the base 2.

[0036] The thermostatic valve stem 5 is connected to the upper part of the valve body 1, one end of the thermostatic valve stem 5 extends into the valve body 1, the temperature adjustment component 3 is arranged in the valve body 1, and the driving member 4a is connected between the thermostatic valve stem 5 and the temperature adjustment component 3. The thermostatic valve stem 5 can rotate around its axis, and then drive the temperature adjustment component 3 to perform the temperature adjustment action through the driving member 4a to realize the temperature adjustment function.

[0037] The temperature adjustment component 3 includes a piston 31 , a memory alloy spring 32 , a memory alloy return spring 33 , a hot water inlet sealing member 34 , a bracket 35 , a temperature sensing element 36 , a regulating valve stem 37 , a safety spring 38 and a piston return spring 39 .

[0038] The driving member 4a is connected between the thermostatic valve stem 5 and the regulating valve stem 37. A safety spring 38 and a top cap 50 are provided between the regulating valve stem 37 and the first end of the temperature sensing element 36. The temperature sensing element 36 can elastically move axially relative to the regulating valve stem 37. Specifically, a mounting cavity is provided in the regulating valve stem 37, and the safety spring 38 and the top cap 50 are both provided in the mounting cavity. The upper part of the temperature sensing element 36 extends into the mounting cavity, and the top cap 50 is connected between the safety spring 38 and the upper part of the temperature sensing element 36, so that the temperature sensing element 36 can elastically move up and down in the axial direction. A large diameter portion and an external threaded connection portion are provided in the middle part of the temperature sensing element 36. The lower part of the temperature sensing element 36 extends toward the mixed water outlet 22, and the piston return spring 39 elastically abuts between the large diameter portion of the temperature sensing element 36 and the base 2.

[0039] The bracket 35 is sleeved on the outer side of the upper part of the temperature sensing element 36 , and the lower part of the bracket 35 is threadedly connected to the external threaded connection part of the temperature sensing element 36 , so that when the elongation of the temperature sensing element 36 changes, the bracket 35 can be driven to move axially.

[0040] The piston 31 is sleeved on the outside of the bracket 35, and the piston 31 is arranged between the cold water inlet 11 and the hot water inlet 12 and can move back and forth between the cold water inlet 11 and the hot water inlet 12 to adjust the water intake of cold water and hot water and realize the temperature adjustment function. Specifically: the end of the piston 31 close to the cold water inlet 11 is threadedly connected to the first end of the bracket 35, so that the piston 31 can move synchronously with the bracket 35, and the lower part of the piston 31 extends downward toward the hot water inlet 12. The thermostatic valve stem 5 can rotate around its own axis, and then drive the regulating valve stem 37 and the temperature sensing element 36 to move axially through the driving member 4a, so that the piston 31 moves between the cold water inlet 11 and the hot water inlet 12.

[0041] The temperature sensing element 36 can automatically adjust its extension according to the mixed water temperature. When the extension of the temperature sensing element 36 changes, it can drive the piston 31 to move between the cold water inlet 11 and the hot water inlet 12 to adjust the water inlet amount of the cold water inlet 11 and the hot water inlet 12 to achieve a constant temperature function.

[0042] The hot water inlet sealing member 34 is arranged between the piston 31 and the bracket 35, and a temperature-sensitive water channel 30 is formed between the hot water inlet sealing member 34 and the piston 31, and the temperature-sensitive water channel 30 is connected to the hot water inlet 12. The memory alloy spring 32 is arranged between the piston 31 and the hot water inlet sealing member 34, and one end of the temperature-sensitive water channel 30 extends toward the memory alloy spring 32, so that the water in the temperature-sensitive water channel 30 can fully contact with the memory alloy spring 32. A hot water inlet gap 60 connected to the mixing water chamber 21 is formed between the hot water inlet sealing member 34 and the side wall of the hot water inlet 12 facing away from the piston 31, that is, between the hot water inlet sealing member 34 and the lower side wall of the hot water inlet 12. The memory alloy reset spring 33 is arranged on the side of the hot water inlet sealing member 34 facing away from the memory alloy spring 32. The elongation of the memory alloy spring 32 is variable and can drive the hot water inlet sealing member 34 to move along its axial direction to adjust the width of the hot water inlet gap 60. Specifically:

[0043] The memory alloy spring 32 is a temperature-sensing driving element wound with TiNi memory alloy wire, which utilizes the one-way memory effect of shape memory alloy and can automatically change its elongation as the temperature changes. When the temperature of water entering the temperature-sensing water channel 30 from the hot water inlet 12 is low, the elongation of the memory alloy spring 32 is shortened, and under the action of the memory alloy reset spring 33, the hot water inlet sealing member 34 moves upward, the hot water inlet gap 60 increases, and the water inlet amount also increases, which facilitates the accelerated discharge of cold water in the hot water pipe; when the temperature of water entering the temperature-sensing water channel 30 from the hot water inlet 12 is high, the elongation of the memory alloy spring 32 is extended to drive the hot water inlet sealing member 34 to move downward, so that the hot water inlet gap 60 returns to its original width, and the water inlet amount at the hot water inlet 12 also returns to normal.

[0044] Combination Figure 2 , Figure 5 and Figure 6 The piston 31 has a first accommodating chamber 311 and a second accommodating chamber 312 in an axially connected manner. The diameter of the second accommodating chamber 312 is larger than that of the first accommodating chamber 311. The memory alloy spring 32 is disposed in the first accommodating chamber 311, and the hot water inlet water sealing member 34 is disposed in the second accommodating chamber 312. The lower part of the memory alloy spring 32 abuts against the upper part of the hot water inlet water sealing member 34. A temperature-sensing water channel 30 is formed between the outer side of the hot water inlet water sealing member 34 and the cavity wall of the second accommodating chamber 312, and the temperature-sensing water channel 30 is connected to the first accommodating chamber 311.

[0045] The lower part of the hot water inlet sealing member 34 is provided with an annular flange 341 protruding outward, and the annular flange 341 passes through the lower part of the free end of the piston 31 and extends toward the hot water inlet 12. A temperature-sensing water inlet gap 343 is formed between the first side of the annular flange 341 and the end wall of the free end of the piston 31, and the temperature-sensing water inlet gap 343 is respectively connected to the hot water inlet 12 and the temperature-sensing water channel 30. The hot water inlet gap 60 is provided on the second side of the annular flange 341, so that the water entering from the hot water inlet 12 is divided into two streams, one stream flows to the temperature-sensing water channel 30, and the other stream flows to the water mixing chamber 21 of the base 2.

[0046] Combination Figure 2 , Figure 4 , Figure 5 and Figure 7 The second end of the bracket 35 extends into the hot water inlet sealing member 34 and is threadedly connected to the middle part of the temperature sensing element 36. A first cold water channel 313 is formed between the upper part of the piston 31 and the inner wall of the valve body 1, and the first cold water channel 313 extends from the outer peripheral wall of the piston 31 to its top wall; a second cold water channel 351 is arranged inside the bracket 35, and the second cold water channel 351 extends downward along its axial direction; a through hole 352 is opened at the lower part of the bracket 35, and the through hole 352 runs through the inner and outer sides of the bracket 35; a third cold water channel 342 is arranged inside the hot water inlet sealing member 34, and the third cold water channel 342 extends downward along the axial direction and communicates with the mixing water chamber 21; the cold water inlet 11 is communicated with the mixing water chamber 21 through the first cold water channel 313, the second cold water channel 351, the through hole 352 and the third cold water channel 342 in sequence, so that the cold water entering from the cold water inlet 11 enters the mixing water chamber 21 from the first cold water channel 313, the second cold water channel 351, the through hole 352 and the third cold water channel 342 in sequence. A sealing ring is provided between the hot water inlet sealing member 34 and the bracket 35 to prevent the third cold water channel 342 from being connected to the temperature sensing water channel 30 .

[0047] At least one first groove 314 is provided on the outer peripheral wall of the upper part of the piston 31. In this embodiment, four first grooves 314 are preferably provided. The first grooves 314 are recessed in the outer peripheral wall of the piston 31. The first groove 314 can be arranged corresponding to the cold water inlet 11, or the two ends of the first groove 314 in the extension direction can be arranged corresponding to two adjacent cold water inlets 11 at the same time. An annular second groove 315 is provided on the connecting end of the piston 31. The second groove 315 is recessed in the end wall of the connecting end of the piston 31; the first groove 314 and the second groove 315 are both connected to the first cold water circuit 313, which is conducive to increasing the flow of the first cold water circuit 313.

[0048] Combination Figure 2 and Figure 3The number of hot water inlets 12 is set to be multiple, and in this embodiment, preferably four, and the four hot water inlets 12 are arranged along the circumference of the valve body 1, and the hot water inlets 12 extend along the circumference of the valve body 1 to increase the length of each hot water inlet 12. The hot water inlet gap 60 is set to be annular, so that the hot water inlet gap 60 is connected to the four hot water inlets 12 at the same time to increase the hot water flow. Filters are set on the outside of the hot water inlet 12 and the cold water inlet 11.

[0049] Combination Figure 1 , Figure 2 and Figure 4 A first annular stopper 371 is disposed on the outer side of the middle portion of the regulating valve stem 37, and the first stopper 371 extends along the circumference of the regulating valve stem 37. The first stopper 371 is disposed correspondingly to the connecting end of the piston 31 in the axial direction, and / or the first stopper 371 is disposed correspondingly to the upper portion of the bracket 35 in the axial direction. In the axial direction, there is a preset distance L between the first stopper 371 and the upper portion of the piston 31 or the bracket 35, and when the regulating valve stem 37 moves toward the mixed water outlet 22, the preset distance L may gradually decrease. When the preset distance decreases to zero, the first stopper 371 may abut against the upper portion of the piston 31 or the bracket 35 to directly push the piston 31 or the bracket 35 downward, so as to reduce the downward pressure of the temperature sensing element 36, which is beneficial to prolonging the service life of the temperature sensing element 36.

[0050] Combination Figure 1 and Figure 8 In this embodiment, the driving member 4a is a polygonal threaded sleeve, a threaded hole 41 is provided inside the first end of the polygonal threaded sleeve, a mounting hole 42 is provided inside the second end of the polygonal threaded sleeve, and a second stopper 43 is provided at the bottom of the mounting hole 42, that is, the second stopper 43 is provided between the threaded hole 41 and the mounting hole 42. The thermostatic valve stem 5 is threadedly connected with the threaded hole 41, and the upper part of the regulating valve stem 37 is inserted into the mounting hole 42 and abuts against the second stopper 43.

[0051] The outer side of the polygonal threaded sleeve is provided with a polygonal structure 44, preferably a hexagonal structure. The valve body 1 is provided with a polygonal hole 13a, and the polygonal structure 44 is connected with the polygonal hole 13a to limit the rotation of the polygonal threaded sleeve in the valve body 1, so that the polygonal threaded sleeve can only move along its axial straight line.

[0052] Combination Figure 1 and Figure 4 The temperature control assembly 3 also includes an annular spring support 40, which is arranged in the base 2, the lower part of the piston return spring 39 is arranged on the spring support 40, and the lower part of the temperature sensing element 36 passes through the piston return spring 39 and the spring support 40.

[0053] Second embodiment of the rapid cold water thermostatic valve core:

[0054] See also Figures 9 to 12 On the basis of the first embodiment of the rapid cold water thermostatic valve core, the thermostatic valve core of this embodiment includes a valve body 1, a base 2, a thermostatic valve stem 5, a driving member 4b and a thermostatic assembly 3. The valve body 1 is threadedly connected to the base 2, and the valve body 1 is provided with at least one cold water inlet 11 and at least one hot water inlet 12 arranged along its axial direction. Preferably, the cold water inlet 11 is arranged above the hot water inlet 12; a water mixing chamber 21 is arranged in the base 2, and a water mixing outlet 22 communicating with the water mixing chamber 21 is opened on the bottom wall of the base 2. The thermostatic valve stem 5 is connected to the upper part of the valve body 1, and the thermostatic assembly 3 is arranged in the valve body 1. The driving member 4b is connected between the thermostatic valve stem 5 and the thermostatic assembly 3, and the thermostatic valve stem 5 can rotate around its axis, and then drive the thermostatic assembly 3 to perform the thermostatic action through the driving member 4b.

[0055] The temperature control component 3 includes a piston 31, a memory alloy spring 32, a memory alloy return spring 33, a hot water inlet sealing member 34, a bracket 35, a temperature sensing element 36, a regulating valve stem 37, a safety spring 38, a piston return spring 39 and a spring support 40. The structural principle of the temperature control component 3 is the same as that of the temperature control component 3 in the previous embodiment, and will not be repeated here.

[0056] The driving member 4b of this embodiment is a polygonal nut, preferably a hexagonal nut, and the thermostatic valve stem 5 is threadedly connected to the polygonal nut, and in the axial direction, the polygonal nut abuts against the first stopper 371. A polygonal structure 44 is provided on the outer side of the polygonal nut.

[0057] A polygonal hole 13b is provided in the valve body 1 of this embodiment, and the polygonal structure 44 is connected with the polygonal hole 13b to restrict the polygonal nut from rotating in the valve body 1, so that the polygonal nut can only move along its axial straight line.

[0058] In summary, the utility model provides a temperature-sensitive water channel connected to the hot water inlet. When the water heater is just turned on, the cold water stored in the pipe between the water heater and the thermostatic valve core will first enter the temperature-sensitive water channel and flow toward the memory alloy spring channel, so that the memory alloy spring shortens its elongation at the temperature of the water. Under the action of the memory alloy reset spring, the hot water inlet sealing member moves upward to increase the hot water inlet gap, which is conducive to speeding up the cold water discharge speed in the pipe, reducing the waiting time for hot water, and improving the user experience. When the cold water in the pipe is discharged, part of the hot water will enter the temperature-sensitive water channel, so that the memory alloy spring extends its elongation at the hot water temperature, so as to drive the hot water inlet sealing member to move downward, so as to reduce the hot water inlet gap and restore it to its original width, so as to facilitate the hot water to enter the thermostatic valve core at a normal speed.

[0059] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A quick-discharge cold water thermostatic valve core, comprising a valve body, a base, a thermostatic valve stem, a driving member and a thermostatic assembly, wherein the valve body is connected to the base, the valve body is provided with a cold water inlet and a hot water inlet, the base is provided with a mixed water outlet, the thermostatic valve stem is connected to the valve body, the thermostatic assembly is arranged in the valve body, the driving member is connected between the thermostatic valve stem and the thermostatic assembly, the thermostatic valve stem can rotate around its axis, and then the thermostatic assembly is driven by the driving member to perform a thermostatic action, characterized in that: The temperature control component includes a piston, a memory alloy spring, a memory alloy return spring and a hot water inlet sealing member. The piston can move back and forth between the cold water inlet and the hot water inlet. The hot water inlet sealing member is arranged in the piston. A temperature-sensitive water channel connected to the hot water inlet is formed between the hot water inlet sealing member and the piston. The memory alloy spring is arranged between the piston and the hot water inlet sealing member. The temperature-sensitive water channel extends toward the memory alloy spring. The memory alloy return spring is arranged on the side of the hot water inlet sealing member facing away from the memory alloy spring. A hot water inlet gap is also formed between the hot water inlet sealing member and the hot water inlet. The elongation of the memory alloy spring is variable to drive the hot water inlet sealing member to move along its axial direction, thereby adjusting the width of the hot water inlet gap.

2. The rapid cold water thermostatic valve core according to claim 1, characterized in that: The piston is provided with a first accommodating chamber and a second accommodating chamber in communication with each other, the memory alloy spring is arranged in the first accommodating chamber, the hot water inlet water sealing member is arranged in the second accommodating chamber and forms the temperature-sensitive water channel with the cavity wall of the second accommodating chamber, and the temperature-sensitive water channel is communicated with the first accommodating chamber; An annular flange is arranged on the outer side of one end of the hot water inlet water sealing member, and the annular flange extends toward the hot water inlet. A temperature-sensitive water inlet gap connected to the temperature-sensitive water channel is formed between the first side of the annular flange and the free end wall of the piston, and the hot water inlet gap is arranged on the second side of the annular flange.

3. The rapid cold water thermostatic valve core according to claim 1, characterized in that: The number of the hot water inlets is set to be multiple, the multiple hot water inlets are arranged along the circumference of the valve body, and the hot water inlets extend along the circumference of the valve body; The hot water inlet gap is designed to be annular, and the hot water inlet gap is communicated with the plurality of hot water inlets respectively.

4. The rapid cold water thermostatic valve core according to claim 1, characterized in that: The temperature regulating assembly further comprises a bracket and a temperature sensing element, wherein the temperature sensing element is arranged in the piston, the bracket is arranged between the piston and the temperature sensing element, the hot water inlet sealing member is arranged between the bracket and the piston, an end of the piston close to the cold water inlet is connected to a first end of the bracket, and a second end of the bracket extends into the hot water inlet sealing member and is connected to the temperature sensing element; A first cold water channel is formed between the piston and the inner wall of the valve body, a second cold water channel is arranged inside the bracket, a through hole is opened in the lower part of the bracket, a third cold water channel is arranged inside the hot water inlet sealing member, and the cold water inlet is connected to the third cold water channel through the first cold water channel, the second cold water channel and the through hole in sequence.

5. The rapid cold water thermostatic valve core according to claim 4, characterized in that: A water mixing chamber is provided in the base, and the water mixing chamber is communicated with the hot water inlet gap and the third cold water channel respectively.

6. The rapid cold water thermostatic valve core according to claim 4, characterized in that: At least one first groove is formed on the outer peripheral wall of the piston, and a second groove is formed on the connecting end of the piston. Both the first groove and the second groove are connected to the first cold water channel.

7. The rapid-discharge cold water thermostatic valve core according to any one of claims 4 to 6, characterized in that: The temperature adjustment assembly further includes a regulating valve stem, a safety spring and a piston return spring, the driving member is connected between the thermostatic valve stem and the regulating valve stem, the safety spring elastically abuts between the regulating valve stem and the first end of the temperature sensing element, the second end of the temperature sensing element extends toward the mixed water outlet, and the piston return spring elastically abuts between the middle of the temperature sensing element and the base; The thermostatic valve stem can rotate around its own axis, and then drive the regulating valve stem and the temperature sensing element to move axially through the driving member, so that the piston moves between the cold water inlet and the hot water inlet to adjust the cold water inlet and the hot water inlet.

8. The rapid cold water thermostatic valve core according to claim 7, characterized in that: A first stopper is disposed on the outer side of the regulating valve stem. In the axial direction, a preset distance is provided between the first stopper and the piston. When the regulating valve stem moves toward the mixed water outlet, the preset distance can be reduced to zero.

9. The rapid cold water thermostatic valve core according to claim 8, characterized in that: The driving member is a polygonal nut, the thermostatic valve stem is threadedly connected to the polygonal nut, and the polygonal nut abuts against the first stopper; A polygonal structure is arranged on the outer side of the polygonal nut, a polygonal hole is arranged in the valve body, and the polygonal structure is connected with the polygonal hole in a matching manner.

10. The rapid cold water thermostatic valve core according to claim 7, characterized in that: The driving member is a polygonal threaded sleeve, in which a threaded hole, a second stopper and a mounting hole are arranged, the second stopper is arranged at the bottom of the mounting hole, the thermostatic valve stem is threadedly connected with the threaded hole, and the regulating valve stem is inserted into the mounting hole and abuts against the second stopper; A polygonal structure is arranged on the outer side of the polygonal threaded sleeve, a polygonal hole is arranged in the valve body, and the polygonal structure is cooperatively connected with the polygonal hole.

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