Temperature control valve core and temperature control valve

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a temperature control valve core and a temperature control valve. The temperature control valve comprises a valve body and a temperature control valve element, and the temperature control valve element comprises a valve element frame and is provided with at least one outer liquid inlet hole. The valve element is movably arranged on the inner wall of the valve element frame; the sealing piece is arranged on the valve element and used for sealing the outer liquid inlet hole; the temperature control device is installed on the valve element frame and connected with the valve element, the inner wall of the valve element frame is provided with a first inclined sealing face, and the outer liquid inlet hole is formed in the first inclined sealing face; the sealing piece is provided with a second inclined sealing face. The sealing of the outer liquid inlet hole is realized through the second inclined sealing surface of the sealing element and the first inclined sealing surface of the valve core frame, and when the temperature control device is heated, the sealing element can quickly open the outer liquid inlet hole; when the temperature control device is reset, the first inclined sealing face and the second inclined sealing face are attached more and more tightly, the sealing effect of the outer liquid inlet hole can be effectively improved, and the service life of the outer liquid inlet hole can be effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve technical field, and specifically relates to a temperature control valve core and temperature control valve. BACKGROUND

[0002] The pipe-in-pipe pipeline is composed of a pipe-in-pipe and a pipe-in-pipe joint, both of which are composed of a pipe-in-pipe inner pipe forming an inner flow channel and a pipe-in-pipe outer pipe forming an outer flow channel, and have the advantages of convenient installation and fast liquid outlet speed.

[0003] Patent No. CN202022293558.7 discloses a temperature control valve core installed at the end of a branch of a pipe-in-pipe pipeline for a hot water outlet system. The temperature control valve core comprises a valve core, a piston and a temperature control device, and the inner flow channel preferentially outlets hot water. When the inner flow channel outlets hot water, the temperature control device drives the piston to move by a corresponding distance to realize delayed outlet of the outer inlet hole. The outlet water temperature curve after the cold water of the outer flow channel and the hot water of the inner flow channel meet is relatively stable, the waste of cold water of the outer flow channel is saved, and the user can quickly obtain a comfortable water experience.

[0004] In the above scheme, two O-rings are arranged on the side wall of the piston, and the upper and lower ends of the outer inlet hole are sealed by the two O-rings respectively. During use, when the piston is moved, the O-rings will rub against the edges of the outer inlet hole, causing wear or deformation of the O-rings. Over a long period of time, the sealing performance of the piston and the service life of the temperature control valve core are affected. SUMMARY

[0005] The utility model discloses a kind of temperature control valve cores and temperature control valves with simple structure, good sealing performance, can quickly outlet hot water.

[0006] The utility model discloses a kind of temperature control valve cores and temperature control valves with simple structure, good sealing performance, can quickly outlet hot water.

[0007] A temperature control valve core is used to be installed on a valve body with an inner flow channel and an outer flow channel, comprising: a valve core frame for being installed in the valve body and separating the inner flow channel and the outer flow channel of the valve body, having at least one liquid outlet hole, at least one inner inlet hole communicating with the inner flow channel, and at least one outer inlet hole communicating with the outer flow channel on the side wall thereof; a valve core movably arranged on the inner wall of the valve core frame; a sealing member arranged on the valve core and used to seal the outer inlet hole; and a temperature control device installed on the valve core frame and connected to the valve core, which can drive the valve core and the sealing member to move by a corresponding distance and adjust the liquid inlet amount of the outer inlet hole when the temperature control device senses hot water; wherein the inner wall of the valve core frame has a first inclined sealing surface, and the outer inlet hole is opened on the first inclined sealing surface; the sealing member has a second inclined sealing surface matched with the shape of the first inclined sealing surface.

[0008] The utility model further provides that the valve core is a framework structure, and the side wall is provided with a sealing installation groove for installing the sealing member, and the sealing member is a trapezoidal sealing ring.

[0009] According to a temperature control valve core as claimed in claim 1, at least one guide protrusion extends from the side wall of the valve core, and a corresponding guide recess is provided on the inner wall of the valve core holder along the moving direction of the valve core.

[0010] The present invention further includes an external check diaphragm on the outer wall of the valve core frame, the external check diaphragm being disposed on the outer flow channel, and the back of the external check diaphragm having a plurality of reset protrusions for returning to its original state.

[0011] The present invention further includes an external check diaphragm mounting groove on the outer wall of the valve core frame for mounting an external check diaphragm, and a plurality of support protrusions for supporting the external check diaphragm below the external check diaphragm mounting groove.

[0012] The present invention further includes a valve core frame having an upper valve core frame and a lower valve core frame with threaded connection, forming a valve core cavity for mounting the valve core between the two. The upper valve core frame is provided with an external liquid inlet and a temperature control device is installed thereon; the lower valve core frame is provided with an internal liquid inlet and an external check diaphragm is installed thereon. The internal liquid inlet and the external liquid inlet are connected to the liquid outlet through the valve core cavity.

[0013] The present invention is further provided that the upper valve core frame is a skeleton structure and the outer side wall is provided with a valve core mounting part adapted to the valve body.

[0014] The present invention further includes a temperature control device comprising a temperature control seat mounted on a valve core frame, wherein a temperature sensing medium and a temperature control rod are disposed within the temperature control seat, and the temperature sensing medium drives the temperature control rod and the temperature control seat to move relative to each other through volume changes, thereby driving the valve core.

[0015] The present invention further includes a reset component for resetting the valve core between the valve core holder and the valve core.

[0016] A temperature control valve includes a valve body and a temperature control valve core mounted on the valve body, wherein the temperature control valve core is the aforementioned temperature control valve core.

[0017] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0018] The temperature control valve core of this invention achieves sealing of the external liquid inlet through the second inclined sealing surface of the sealing element and the first inclined sealing surface of the valve core frame. When the temperature control device is heated and drives the valve core and sealing element to move, the first and second inclined sealing surfaces can quickly separate, thereby opening the external liquid inlet. When the temperature control device is reset, the fit between the first and second inclined sealing surfaces will become tighter and tighter, which can effectively improve the sealing effect and service life of the external liquid inlet.

[0019] Because the valve core initially seals the external inlet hole, hot water is preferentially discharged from the inner flow channel during liquid outflow. The temperature control device delays the discharge from the outer flow channel, thus delaying the discharge of cold water from the outer flow channel. This allows users to quickly access hot water. Furthermore, due to the smaller diameter of the inner flow channel, the amount of cold water released is significantly reduced compared to ordinary pipe systems. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the temperature control valve of this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of the temperature control valve core of this utility model.

[0022] Figure 3 This is a cross-sectional view of the temperature control valve of this utility model.

[0023] Figure 4 This is a cross-sectional view of the temperature control valve core of this utility model.

[0024] Figure 5 This is an exploded view of the temperature control valve core of this utility model.

[0025] The meaning of the labels in the diagram:

[0026] 1-Valve body; 3-Temperature control valve core;

[0027] 11-Inner valve body; 12-Outer valve body; 13-Pipe-in-pipe mounting end; 14-Valve core mounting end; 15-Installer insert;

[0028] 31-Valve core holder; 31A-Upper valve core holder; 31B-Lower valve core holder; 311-External inlet port; 312-Valve core mounting part; 313-Internal inlet port; 314-Outlet port; 315-First inclined sealing surface; 316-Guide recess; 317-External check valve mounting groove; 318-Support protrusion; 32-Valve core; 321-Guide protrusion; 322-Flow hole; 33-Seal; 331-Second inclined sealing surface; 34-Temperature control device; 341-Temperature control seat; 342-Temperature sensing medium; 343-Temperature control rod; 35-External check valve diaphragm; 351-Reset protrusion. Detailed Implementation

[0029] The present invention will be further described below with reference to specific embodiments:

[0030] Example 1:

[0031] This embodiment provides a temperature control valve, which is mainly used at the end of a branch in a pipe-in-pipe pipeline to achieve delayed liquid discharge from the external flow channel.

[0032] like Figures 1-3As shown, the temperature control valve includes a valve body 1 and a temperature control valve core 2. It has an inner valve body 11, an outer valve body 12, and a valve body connecting portion connecting the two. An inner flow channel is formed within the inner valve body 11, and an outer flow channel is formed between the inner valve body 11 and the outer valve body 12. The valve body 1 has at least one pipe-in-pipe mounting end 13 for connecting a pipe-in-pipe system and a valve core mounting end 14 for mounting the temperature control valve core 2. In this embodiment, the valve body 1 is equivalent to a two-way pipe-in-pipe connector. An insert 15 with internal threads is embedded in the outer valve body 12 where the valve core mounting end 14 is located. The temperature control valve core 2 is threadedly connected to the valve core mounting end 14 and controls the delayed liquid discharge from the outer flow channel of the valve body 1.

[0033] like Figure 4 As shown, the temperature control valve core includes a valve core holder 31, a valve core 32, a seal 33, and a temperature control device 34.

[0034] The valve core frame 31 has an upper valve core frame 31A and a lower valve core frame 31B connected by threads, forming a valve core cavity for mounting the valve core 32. The upper end of the upper valve core frame 31A is a skeleton structure, on which at least one liquid outlet hole 314 and a threaded hole for mounting the temperature control device 34 are formed. The side wall of the upper valve core frame 31A is an annular structure and is sequentially provided with a valve core mounting part 312 adapted to the valve body 1, at least one external liquid inlet hole 311 communicating with the external flow channel, and an external threaded mounting part for connecting the lower valve core frame 31B. In this embodiment, the valve core mounting part 312 is preferably externally threaded and can be threadedly connected to the insert 15 of the valve body 1. The upper end of the lower valve core frame 31B is provided with an internal threaded mounting part for connecting the upper valve core frame 31A, and is threadedly connected with the upper valve core frame 31A to form a complete valve core frame 31; the lower end of the lower valve core frame 31B is provided with an inner liquid inlet hole 313. In this embodiment, there is one inner liquid inlet hole 313, and four outer liquid inlet holes 311 and liquid outlet holes 314 are arranged circumferentially. The inner liquid inlet hole 313 and the outer liquid inlet hole 311 are both connected to the liquid outlet hole 314 through the inner cavity of the valve core.

[0035] The valve core 32 is a skeleton structure and is movably mounted on the inner wall of the valve core frame 31. Several flow holes 322 are formed between the skeleton structures to allow for unobstructed liquid flow. The valve core 32 is provided with a sealing element 33 for sealing the external liquid inlet 311. The inner wall of the valve core frame 31 has a first inclined sealing surface 315, on which the external liquid inlet 311 is opened. The sealing element 33 has a second inclined sealing surface 331 that matches the shape of the first inclined sealing surface 315.

[0036] In this embodiment, the valve core 32 and the seal 33 are separately arranged. The valve core 32 has a sealing installation groove on its side wall, and the sealing installation groove is provided with the seal 33. The seal 33 is preferably a trapezoidal sealing ring with a right-angled trapezoidal cross section.

[0037] The temperature control device 34 preferably uses a temperature-sensitive wax pack, which is mounted on the valve core frame 31 communicating with the inner flow channel and drives the valve core 32 to move. Specifically, the temperature control device 34 includes a temperature control seat 341 disposed in a threaded hole in the upper valve core frame 31A. The temperature control seat 341 contains a temperature-sensitive medium 342 and a temperature control rod 343. The temperature-sensitive medium 342 drives the temperature control rod 343 and the temperature control seat 341 to move relative to each other through volume changes, thereby driving the valve core 32. In this embodiment, the temperature control rod 343 is movably mounted on the temperature control seat 341, and the temperature control seat 341 is installed in the threaded hole in the middle of the upper valve core frame 31A through a threaded structure. When the temperature control device 34 senses hot water, it can drive the valve core 32 and the sealing element 33 to move a corresponding distance and adjust the liquid inlet volume of the external liquid inlet 311.

[0038] To prevent the valve core 32 from rotating, at least one guide protrusion 321 extends from the side wall of the valve core 32. A corresponding guide recess 316 is provided on the inner wall of the valve core frame 31 (upper valve core frame 31A) along the moving direction of the valve core 32. The guide recess 316 is a guide groove. The valve core 32 is movably mounted on the guide recess 316 through the guide protrusion 321 to achieve the guiding function and the anti-rotation function.

[0039] The valve core 32 and / or valve core holder 31 are made of ceramic, plastic or metal. In this embodiment, both the valve core 32 and valve core holder 31 are made of plastic.

[0040] In another embodiment, a filter screen is provided on the valve core frame 31 outside the external liquid inlet 311 or in the external flow channel therein to prevent impurities from entering the temperature control valve core 3.

[0041] like Figure 2 As shown, the temperature control valve core 3 is installed after the valve core mounting end 14 of the valve body 1. The inner liquid inlet hole 313 of the valve core frame 31 is installed on the inner valve body 11 and connects to the inner flow channel. The valve core mounting part 312 of the valve core frame 31 is threaded to the outer valve body 12. Since only the outer liquid inlet hole 311 that can connect to the outer flow channel is opened on the side wall of the valve core frame 31, the valve core frame 31 can separate the inner flow channel and the outer flow channel of the valve core mounting end 14.

[0042] The outer wall of the lower valve core frame 31B of the valve core frame 31 is provided with an external check diaphragm 35 to prevent the liquid in the inner flow channel from flowing back to the outer flow channel. The external check diaphragm 35 is disposed on the outer flow channel. The back of the external check diaphragm 35 is provided with a number of reset protrusions 351 for returning to its original state. After long-term use, the reset protrusions 351 can effectively ensure the reset capability of the external check diaphragm 35 and increase its service life.

[0043] In this embodiment, an external check valve mounting groove 317 is provided on the outer wall of the valve core frame 31. Both the external check valve mounting groove 317 and the external check valve diaphragm 35 are annular. The inner edge of the external check valve diaphragm 35 is fitted onto the external check valve mounting groove 317, and the outer edge of the external check valve diaphragm 35 abuts against the protruding ring of the outer valve body 12 or the insert 15 to achieve a check valve seal in the external flow channel. When liquid flows out of the external flow channel, the external check valve diaphragm 35 deforms and opens. Several support protrusions 318 are provided below the external check valve mounting groove 317 to support the external check valve diaphragm 35. When the liquid in the internal flow channel flows back, the support protrusions 318 can ensure that the external check valve diaphragm 35 does not deform, thereby improving the check valve effect.

[0044] In this embodiment, the system is applied to a hot water outlet system. Since the initial position of the valve core 32 is to seal the external inlet hole 311, when water outlet devices such as faucets and shower heads are opened, water flows out of the inner channel first, while the outer channel is closed. Because there is relatively little cold water in the inner channel, the priority of water flow from the inner channel allows users to quickly obtain hot water and reduces the waiting time. When the temperature control device 34 senses hot water, the valve core 32 and the seal 33 move and open the outer channel, achieving delayed water flow from the outer channel. Initially, the water temperature curve after the cold water in the outer channel and the hot water in the inner channel meet is relatively stable, thus utilizing the cold water in the outer channel and saving water resources. When hot water also flows from the outer channel, it can meet the user's normal water needs, thereby providing the user with a fast and comfortable water experience.

[0045] In addition, when the temperature control device 34 senses hot water, it drives the valve core 32 to move a corresponding distance according to the temperature of the hot water, thereby adjusting the liquid inlet flow rate of the external liquid inlet 311. When the temperature control device 34 senses a lower hot water temperature, the valve core 32 moves a shorter distance, and the liquid outlet flow rate of the external liquid inlet 311 is less; when the temperature control device 34 senses a higher hot water temperature, the valve core 32 moves a longer distance, and the liquid outlet flow rate of the external liquid inlet 311 is greater. After merging with the hot water in the inner flow channel, the liquid flows out together, greatly reducing the impact of the cold water temporarily stored in the outer flow channel on the outlet water temperature.

[0046] Example 2:

[0047] This embodiment is basically the same as Embodiment 1, except that the temperature control valve core 2 also includes a reset component. The valve core 32 is movably mounted on the inner wall of the valve core frame 31 through the reset component. The reset component is preferably a spring. When there is no external force, the reset component pushes the valve core 32 against the external liquid inlet hole 311, making the seal of the external liquid inlet hole 311 tighter and more reliable.

[0048] Example 3:

[0049] In another embodiment, the valve core 32, the seal, and the upper valve core frame 31A of the valve core frame 31 are all made of ceramic. In this case, the seal and the valve core frame 31 can be integrally formed, and the first inclined sealing surface 315 and the second inclined sealing surface 331 made of ceramic material can also effectively seal.

[0050] Example 4:

[0051] This embodiment is basically the same as Embodiment 1, except that the temperature control rod 343 is fixed on the upper valve core frame 31A, and the temperature control seat 341 is movably set on the temperature control rod 343, so as to achieve the purpose of driving the valve core to move.

[0052] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A temperature control valve core for mounting on a valve body (1) having an inner flow channel and an outer flow channel, characterized in that, include: The valve core frame (31) is used to install in the valve body and separate the inner flow channel and the outer flow channel of the valve body, and has at least one liquid outlet (314), at least one inner liquid inlet (313) communicating with the inner flow channel, and at least one outer liquid inlet (311) communicating with the outer flow channel located on its side wall; The valve core (32) is movably disposed on the inner wall of the valve core holder (31); A seal (33) is disposed on the valve core (32) and used to seal the external inlet port (311); and The temperature control device (34) is installed on the valve core frame (31) and connected to the valve core (32). When the temperature control device (34) senses hot water, it can drive the valve core (32) and the seal (33) to move a corresponding distance and adjust the liquid inlet of the external liquid inlet (311). The valve core frame (31) has a first inclined sealing surface (315) on its inner wall, and the external liquid inlet (311) is opened on the first inclined sealing surface (315); the sealing element (33) has a second inclined sealing surface (331) that is adapted to the shape of the first inclined sealing surface (315).

2. A temperature control valve core according to claim 1, characterized in that: The valve core (32) has a skeleton structure and a sealing mounting groove for installing the sealing element (33) is provided on the side wall. The sealing element (33) is a trapezoidal sealing ring.

3. A temperature control valve core according to claim 1 or 2, characterized in that: At least one guide protrusion (321) extends from the side wall of the valve core (32), and a corresponding guide recess (316) is provided on the inner wall of the valve core frame (31) along the moving direction of the valve core (32).

4. A temperature control valve core according to claim 1, characterized in that: The outer wall of the valve core frame (31) is provided with an external check diaphragm (35), which is disposed on the outer flow channel. The back of the external check diaphragm (35) is provided with a plurality of reset protrusions (351) for returning to its original state.

5. A temperature control valve core according to claim 4, characterized in that: The outer wall of the valve core frame (31) is provided with an external check diaphragm mounting groove (317) for mounting the external check diaphragm (35), and a plurality of support protrusions (318) for supporting the external check diaphragm (35) are provided below the external check diaphragm mounting groove (317).

6. A temperature control valve core according to claim 4 or 5, characterized in that: The valve core frame (31) has an upper valve core frame (31A) and a lower valve core frame (31B) connected by threads, forming a valve core cavity for mounting the valve core (32) between them. The upper valve core frame (31A) is provided with the external liquid inlet (311) and a temperature control device (34) is installed thereon. The lower valve core frame (31B) is provided with the internal liquid inlet (313) and an external check diaphragm (35) is installed thereon. The internal liquid inlet (313) and the external liquid inlet (311) are connected to the liquid outlet (314) through the valve core cavity.

7. A temperature control valve core according to claim 6, characterized in that: The upper valve core frame (31A) is a skeleton structure and the outer side wall is provided with a valve core mounting part (312) that is adapted to the valve body.

8. A temperature control valve core according to claim 1, characterized in that: The temperature control device (34) includes a temperature control seat (341) mounted on a valve core frame (31). The temperature control seat (341) contains a temperature sensing medium (342) and a temperature control rod (343). The temperature sensing medium (342) drives the temperature control rod (343) and the temperature control seat (341) to move relative to each other through volume change, thereby driving the valve core (32).

9. A temperature control valve core according to claim 1, characterized in that: A reset component for resetting the valve core (32) is also provided between the valve core frame (31) and the valve core (32).

10. A temperature control valve, characterized in that: It includes a valve body (1) and a temperature control valve core (3) mounted on the valve body, wherein the temperature control valve core is the temperature control valve core according to any one of claims 1-9.

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