A thermostatic valve for a radiator

Abstract

This utility model provides a temperature control valve for radiators, belonging to the field of HVAC technology. It solves the problem of insufficient applicability. It includes a valve body with a water passage cavity and a first interface communicating with the water passage cavity, and a valve core disposed within the water passage cavity and having an axial insertion hole. A valve seat, which is cylindrical with open ends and its outer end extending out of the valve body, is threadedly connected within the water passage cavity. A connector is sleeved on the outer end of the valve seat, and an annular water passage groove is formed between the two. A second interface is provided on the side of the connector. A water passage hole is provided on the outer side of the valve seat, and the water passage hole communicates with the second interface through the annular water passage groove. A cover is threadedly connected to the outer end of the valve seat. The connector is fixed axially between the valve body and the cover. The valve core is threadedly connected inside the valve seat. Movement of the valve core can control the communication or isolation between the water passage hole and the interior of the valve seat. A clearance hole is provided on the outer end of the cover, allowing the valve core to move outward to abut against the inner side wall of the outer end of the cover. It has the advantages of wide applicability.

Description

Technical Field

[0001] This utility model belongs to the field of heating, ventilation and air conditioning technology, and relates to a temperature control valve for radiators. Background Technology

[0002] Radiators are an important and basic component of hot water heating systems. They are connected between the heating and return water pipes, both of which are connected to the boiler to create a water circulation system. As the water flows through the radiators, it releases heat into the room to provide heating. To regulate the radiant temperature, a thermostatic valve is typically connected between the radiator and the pipes to adjust the flow rate.

[0003] Thermostatic valves on the market come in single-port and double-port types. A single-port thermostatic valve has only one inlet and one outlet, used solely for hot water flow. The inlet connects to the heating pipe, and the outlet connects to the radiator inlet. It contains a valve core to control the flow rate. Of course, a separate valve for return water is required when using a single-port thermostatic valve. A double-port thermostatic valve has two inlets and two outlets, used for both hot and return water flow. It has two internal chambers; one inlet and outlet connect to one chamber to form a flow channel, and the other inlet and outlet connect to the other chamber to form a flow channel. These two flow channels are independent; when hot water is used in one channel, the other is used for return water. Both flow channels contain valve cores to control the flow rate, as exemplified by the multi-functional thermostatic valve disclosed in patent application number 201220721615.X. Radiators are typically installed in the corners of rooms. However, the inlet and outlet positions of both single and double thermostatic valves are currently fixed, which fails to meet the needs of different installation environments and results in insufficient applicability. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a temperature control valve for radiators, thus solving the problem of insufficient applicability.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A temperature control valve for a radiator includes a valve body having a water passage cavity and a first interface communicating with the water passage cavity, and a columnar valve core disposed within the water passage cavity. The valve core has an insertion hole along its axial direction. The valve body is characterized by having a valve seat with two open cylindrical sections threadedly connected to the water passage cavity. The outer end of the valve seat extends out of the valve body, and a connector is sleeved on the outer end of the valve seat, forming an annular water passage groove between them. A second interface is provided on the side of the connector. A water passage hole is provided on the side of the outer end of the valve seat, communicating with the second interface through the annular water passage groove. A cover is threadedly connected to the outer end of the valve seat. The connector is fixed between the valve body and the cover along the axial direction of the valve seat. The valve core is threadedly connected inside the valve seat. Movement of the valve core can control the communication or isolation between the water passage hole and the interior of the valve seat. A clearance hole is provided on the outer end of the cover, and the insertion hole falls into the inner side of the clearance hole along the axial direction of the valve core. The valve core can move outwards towards the valve body until it abuts against the inner wall of the outer end of the cover.

[0007] A valve seat is threaded into the water passage cavity. The outer end of the valve seat extends out of the valve body, and a connector and a cover are sequentially installed on the outer end of the valve seat. A water passage hole is provided on the side of the valve seat. An annular water passage groove is formed between the connector and the valve seat. A second interface is provided on the side of the connector. The second interface is connected to the water passage hole through the annular water passage groove. The valve core is threaded into the valve seat, and when it moves along the thread, it can control the connection or isolation between the water passage hole and the interior of the valve seat. The first interface, the water passage cavity, the interior of the valve seat, the water passage hole, the annular water passage groove, and the second interface constitute the water flow channel, ensuring the normal flow of water and the required water control function. The connector is sleeved on the valve seat, and the cover is threaded onto the valve seat, fixing the connector axially between the valve body and the cover along the valve seat. This allows the connector and the valve body to rotate relative to each other, meaning the connector is a swivel joint. As a result, this temperature control valve can be used in different installation environments by rotating the connector relative to the valve body after the valve body is connected, or by rotating the valve body relative to the connector after the connector is connected, thus greatly improving its applicability.

[0008] The valve core is threaded, and water control requires its rotation. Although the cover covers the outer end of the valve seat, the outer end of the cover has a clearance hole, and the insertion hole falls into the inner side of the clearance hole along the axial direction of the valve core. This means the clearance hole is larger than the insertion hole, allowing the user to insert a tool through the clearance hole into the valve core's insertion hole to operate it. Furthermore, the valve core can move outwards to abut against the inner wall of the outer end of the cover. This means that the cover, in addition to axially fixing the joint, also limits the distance the valve core can move outwards to prevent excessive rotation and dislodging it from the valve seat; thus, the valve seat serves a dual purpose.

[0009] In the aforementioned temperature control valve for radiators, the connector includes an annular sleeve portion and a protrusion disposed on the outer periphery of the sleeve portion. A second interface is disposed on the protrusion portion. Two anti-leakage sealing rings are sleeved on the valve seat. One anti-leakage sealing ring is disposed between the side wall of the valve body and the side wall of the sleeve portion, and the other anti-leakage sealing ring is disposed between the inner end of the cover and the other side wall of the sleeve portion. An annular water passage groove is located between the two anti-leakage sealing rings.

[0010] The annular sleeve allows the connector to fit onto the valve seat and rotate relative to it, improving the applicability of the temperature control valve originally intended for radiators. Two leak-proof sealing rings are fitted over the valve seat. One leak-proof sealing ring abuts against the side wall of the valve body and the side wall of the sleeve, while the other leak-proof sealing ring abuts against the inner end of the cover and the other side wall of the sleeve. An annular water passage groove is located between the two leak-proof sealing rings, ensuring no leakage between the valve body, valve seat, and connector, and between the valve seat, connector, and cover.

[0011] In the aforementioned temperature control valve for radiators, the second interface is internally threaded with a pressure ring, and a union cap is sleeved on the protrusion. The outer end of the pressure ring extends out of the protrusion, and the outer end of the pressure ring has an annular shoulder to prevent the union cap from coming off the protrusion.

[0012] The above settings also create a flexible connection at the second interface, further improving its applicability.

[0013] In the aforementioned temperature control valve for radiators, there are several water passage holes, and each water passage hole is distributed circumferentially.

[0014] The multiple water passages ensure that the water flow is not affected by the connection of the valve seat.

[0015] In the aforementioned temperature control valve for radiators, an annular mounting groove is provided on the outer side of the inner end of the valve core, and a water control sealing ring is provided in the annular mounting groove. The water control sealing ring abuts against the inner wall of the valve seat, and the water control sealing ring can move with the valve core to the front or rear of the water passage.

[0016] The water control seal ring is installed in an annular mounting groove. As the valve core rotates and moves along the threads, the position of the water control seal ring changes accordingly, either connecting or disconnecting the water passage from the valve seat. Specifically, when the water control seal ring moves with the valve core to a position in front of the water passage, the side of the valve core is positioned at the water passage. The presence of the water control seal ring prevents water flowing into the valve seat from entering the water passage through the gap between the side of the valve core and the inner wall of the valve seat. When the water control seal ring moves with the valve core to a position behind the water passage, the valve core completely relinquishes the water passage, allowing water flowing into the valve seat to flow directly out through the water passage.

[0017] In the aforementioned temperature control valve for radiators, there are two first interfaces and two water passage chambers. The two water passage chambers are symmetrically arranged on the valve body, and the two first interfaces are symmetrically arranged on the valve body. The valve seats are threaded into both water passage chambers, and the connectors and covers are connected to the outside of both valve seats.

[0018] The valve body has two independent water passage chambers, each with a corresponding first interface. A valve seat is threaded into each of the two water passage chambers, and a connector and cover are attached to the outside of each valve seat. This means there are also two second interfaces, both of which are rotatable. In practical use, one of the first interfaces is connected to the heating pipe, and the second interface on the corresponding connector is connected to the radiator inlet. The other first interface is connected to the return water pipe, and the second interface on the corresponding connector is connected to the radiator outlet.

[0019] Compared with existing technologies, the temperature control valve for radiators has a valve seat threadedly connected inside the water passage chamber. The outer end of the valve seat extends out of the valve body, and a connector and a cover are sequentially installed on the outer end of the valve seat. The connector is sleeved on the valve seat, and the cover is threadedly connected to the valve seat, fixing the connector between the valve body and the cover along the axial direction of the valve seat. This allows the connector and the valve body to rotate relative to each other, that is, the connector is a swivel joint. As a result, this temperature control valve can meet the needs of different installation environments by rotating the connector relative to the valve body after the valve body is connected, or by rotating the valve body relative to the connector after the connector is connected, which greatly improves its applicability. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of a temperature control valve used in radiators.

[0021] Figure 2 yes Figure 1 A magnified view of the right half of the middle section.

[0022] Figure 3 This is a partially exploded diagram of a temperature control valve used in radiators.

[0023] In the diagram, 1. Valve body; 1a. Water passage cavity; 1b. First interface; 1c. Second groove; 1d. Connecting hole; 2. Valve core; 2a. Insertion hole; 3. Valve seat; 3a. Water passage hole; 4. Connector; 4a. Second interface; 4b. Sleeve part; 4b1. First groove; 4c. Protrusion; 5. Cover; 5a. Clearance through hole; 5b. Third groove; 6. Annular water passage groove; 7. Water control sealing ring; 8. Leakage prevention sealing ring; 9. Pressure ring; 9a. Annular shoulder; 10. Union cap; 11. Control rod; 11a. Connecting hole; 12. Guide hole; 13. Water blocking sealing ring. Detailed Implementation

[0024] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, a temperature control valve for a radiator includes a valve body 1. The valve body 1 has a water passage chamber 1a and a first interface 1b communicating with the water passage chamber 1a. A columnar valve core 2 is disposed in the water passage chamber 1a, and the valve core 2 has an insertion hole 2a along its axial direction. A valve seat 3 with a cylindrical shape and open at both ends is threadedly connected to the water passage chamber 1a. The outer end of the valve seat 3 extends out of the valve body 1, and a connector 4 and a cover 5 are sequentially disposed on the outer end of the valve seat 3. The connector 4 is fitted onto the valve seat 3. An annular water passage groove 6 is formed between the inner wall of the connector 4 and the outer wall of the valve seat 3. A second interface 4a is provided on the side of the connector 4. The second connector 4 and the first interface 1b are flush along the axial direction of the valve core 2. A second interface 4a is provided on the side of the valve seat 3. A water passage hole 3a is provided on the outer end side of the valve seat 3. The water passage hole 3a is connected to the second interface 4a through the annular water passage groove 6. There are several water passage holes 3a, which are distributed circumferentially. The valve core 2 is threaded into the valve seat 3. The movement of the valve core 2 can control the connection or disconnection between the water passage hole 3a and the interior of the valve seat 3. Specifically, an annular mounting groove is provided on the outer side of the inner end of the valve core 2. A water control sealing ring 7 is provided in the annular mounting groove. The water control sealing ring 7 abuts against the inner wall of the valve seat 3. The water control sealing ring 7 can move with the valve core 2 to the front or rear of the water passage hole 3a. The cover 5 is threaded onto the valve seat 3. The connector 4 is fixed between the valve body 1 and the cover 5 along the axial direction of the valve seat 3. The outer end of the cover 5 is provided with a clearance through hole 5a. The insertion hole 2a falls into the inner side of the clearance through hole 5a along the axial direction of the valve core 2. The valve core 2 can move outward toward the valve body 1 until it abuts against the inner side wall of the outer end of the cover 5.

[0026] A valve seat 3 is threaded into the water passage cavity 1a. The outer end of the valve seat 3 extends out of the valve body 1, and a connector 4 and a cover 5 are sequentially installed on the outer end of the valve seat 3. A water passage hole 3a is provided on the side of the valve seat 3. An annular water passage groove 6 is formed between the connector 4 and the valve seat 3. A second interface 4a is provided on the side of the connector 4. The second interface 4a is connected to the water passage hole 3a through the annular water passage groove 6. The valve core 2 is threaded into the valve seat 3, and when it moves along the thread, it can control the connection or disconnection between the water passage hole 3a and the interior of the valve seat 3. The water passage is formed by the first interface 1b, the interior of the water passage cavity 1a, the interior of the valve seat 3, the water passage hole 3a, the annular water passage groove 6, and the second interface 4a, ensuring the normal flow of water and the required water control function. The connector 4 is sleeved on the valve seat 3, and the cover 5 is threaded onto the valve seat 3, fixing the connector 4 axially between the valve body 1 and the cover 5. This allows the connector 4 and the valve body 1 to rotate relative to each other, meaning the connector 4 is a swivel joint. This allows the thermostatic valve to be used in different installation environments by rotating the connector 4 relative to the valve body 1 after the valve body 1 is connected, or by rotating the valve body 1 relative to the connector 4 after the connector 4 is connected, thus greatly improving its applicability. The valve core 2 is threaded. To control water flow through the valve core 2, it needs to be rotated. Although the cover 5 covers the outer end of the valve seat 3, the outer end of the cover 5 has a clearance hole 5a, and the insertion hole 2a falls into the inner side of the clearance hole 5a along the axial direction of the valve core 2. This means the clearance hole 5a is larger than the insertion hole 2a. The user can pass a tool through the clearance hole 5a and insert it into the insertion hole 2a of the valve core 2 to operate the valve core 2. Moreover, the valve core 2 can move outward toward the valve body 1 to abut against the inner side wall of the outer end of the cover 5. This means that in addition to serving as an axial fixing joint 4, the cover 5 also has the function of limiting the distance the valve core 2 moves outward toward the valve body 1 to prevent the valve core 2 from rotating excessively and coming out directly from the valve seat 3. In other words, the valve seat 3 serves two purposes.

[0027] Among them, such as Figure 2 and Figure 3As shown, the connector 4 includes an annular sleeve portion 4b and a protrusion 4c disposed on the outer periphery of the sleeve portion 4b. The second interface 4a is disposed on the protrusion 4c. The valve seat 3 is fitted with two anti-leakage sealing rings 8. One anti-leakage sealing ring 8 is disposed between the side wall of the valve body 1 and the side wall of the sleeve portion 4b, and the other anti-leakage sealing ring 8 is disposed between the inner end of the cover 5 and the other side wall of the sleeve portion 4b. The annular water passage groove 6 is located between the two anti-leakage sealing rings 8. The sleeve portion 4b has a first groove 4b1 on both sides, and the side wall of the valve body 1 has a second groove 1c. One anti-leakage sealing ring 8 is located in both the second groove 1c and the corresponding first groove 4b1. The inner end of the cover 5 has a third groove 5b, and the other anti-leakage sealing ring 8 is located in both the third groove 5b and the corresponding first groove 4b1. The second interface 4a is internally threaded with a pressure ring 9, and the protrusion 4c is sleeved with a union cap 10. The outer end of the pressure ring 9 extends out of the protrusion 4c, and the outer end of the pressure ring 9 has an annular shoulder 9a to prevent the union cap 10 from coming off the protrusion 4c.

[0028] like Figure 1As shown, in this embodiment, there are two first interfaces 1b and two water passage chambers 1a. The two water passage chambers 1a are symmetrically arranged on the valve body 1, and the two first interfaces 1b are symmetrically arranged on the valve body 1. The valve seats 3 are threadedly connected to the two water passage chambers 1a, and the connectors 4 and covers 5 are connected to the outside of the two valve seats 3. Furthermore, the valve body 1 has a connecting hole 1d that connects the two water passage chambers 1a. A control rod 11 is provided in one of the water passage chambers 1a. An insertion hole 2a on the valve core 2 located within the water passage chamber 1a passes through both ends of the valve core 2, and the outer end of the control rod 11 is inserted into the insertion hole 2a via the inner end of the valve seat 3. The middle part of the control rod 11 is threadedly connected to the inner end of the valve seat 3, and at least one guide hole 12 is formed circumferentially between them. The outer end of the control rod 11 has a non-circular connecting hole 9a. A water-blocking sealing ring 13 is provided on the outer periphery of the outer end of the control rod 11, and the water-blocking sealing ring 13 abuts against the inner wall of the insertion hole 2a. Movement of the control rod 11 can open or close the connecting hole 1d at its inner end. Specifically, a mating part is provided in the middle of the control rod 11, which is threadedly connected to the valve seat 3. The mating part includes several protrusions circumferentially, and the guide hole 12 is formed by the inner wall of the valve seat 3 and between two protrusions. In practical use, one of the first ports 1b is connected to the heating pipe, and the second port 4a on the corresponding connector 4 is connected to the radiator inlet. The other first port 1b is connected to the return water pipe, and the second port 4a on the corresponding connector 4 is connected to the radiator outlet. Through the control lever 11 and the connecting hole 1d, the user can control whether the two water passage chambers 1a are connected according to their needs. Specifically, when the radiator is in normal working condition, operating the control lever 11 closes the connecting hole 1d, making the two water passage chambers 1a independent and preventing cross-flow. Of course, at this time, it must be ensured that both valve cores 2 are in the state of opening the water passage holes 3a on the corresponding valve seats 3. This way, after hot water flows into the corresponding water passage chamber 1a, it can only enter the radiator first, and then the return water flowing out of the radiator can only flow into the return water pipe. When the radiator needs maintenance, the operating control lever 11 opens the connecting hole 1d to directly connect the two water passage chambers 1a. Of course, at this time, it must be ensured that both valve cores 2 are in the state of closing the water passage holes 3a on the corresponding valve seats 3. In this way, after the hot water flows into the corresponding water passage chamber 1a, it can only enter the other water passage chamber 1a through the connecting hole 1d and flow directly into the return water pipe. This setting can ensure that the boiler can not be shut down when the radiator is under maintenance.

[0029] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A temperature control valve for a radiator, comprising a valve body (1) having a water passage cavity (1a) and a first interface (1b) communicating with the water passage cavity (1a), and a columnar valve core (2) disposed within the water passage cavity (1a), the valve core (2) having an insertion hole (2a) along its axial direction, characterized in that, The water passage cavity (1a) is internally threaded with a valve seat (3) that is cylindrical with open ends. The outer end of the valve seat (3) extends out of the valve body (1). A connector (4) is sleeved on the outer end of the valve seat (3), and an annular water passage groove (6) is formed between the two. A second interface (4a) is provided on the side of the connector (4). A water passage hole (3a) is provided on the side of the outer end of the valve seat (3). The water passage hole (3a) and the second interface (4a) are connected through the annular water passage groove (6). A cover is threaded on the outer end of the valve seat (3). (5), the connector (4) is fixed between the valve body (1) and the cover (5) along the axial direction of the valve seat (3). The valve core (2) is threadedly connected inside the valve seat (3). The movement of the valve core (2) can control the internal connection or isolation between the water passage (3a) and the valve seat (3). The outer end of the cover (5) is provided with a clearance through hole (5a). The insertion hole (2a) falls into the inner side of the clearance through hole (5a) along the axial direction of the valve core (2). The valve core (2) can move outward toward the valve body (1) to abut against the inner side wall of the outer end of the cover (5).

2. A thermostatic valve for a radiator as claimed in claim 1, characterised in that, The connector (4) includes an annular sleeve (4b) and a protrusion (4c) disposed on the outer periphery of the sleeve (4b). The second interface (4a) is disposed on the protrusion (4c). The valve seat (3) is fitted with two anti-leakage sealing rings (8). One anti-leakage sealing ring (8) is abutted between the side wall of the valve body (1) and the side wall of the sleeve (4b). The other anti-leakage sealing ring (8) is abutted between the inner end of the cover (5) and the other side wall of the sleeve (4b). The annular water passage groove (6) is located between the two anti-leakage sealing rings (8).

3. A thermostatic valve for a radiator as claimed in claim 2, characterised in that, The second interface (4a) is internally threaded with a pressure ring (9), and a swivel cap (10) is sleeved on the protrusion (4c). The outer end of the pressure ring (9) extends out of the protrusion (4c), and the outer end of the pressure ring (9) has an annular shoulder (9a) to prevent the swivel cap (10) from coming off the protrusion (4c).

4. A thermostatic valve for a radiator according to claim 1 or 2 or 3, characterised in that, The number of water passage holes (3a) is several, and each water passage hole (3a) is distributed circumferentially.

5. A thermostatic valve for a radiator as claimed in claim 4, wherein, The valve core (2) has an annular mounting groove on the outer side of its inner end. A water control sealing ring (7) is provided in the annular mounting groove. The water control sealing ring (7) abuts against the inner wall of the valve seat (3). The water control sealing ring (7) can move with the valve core (2) to the front or rear of the water passage hole (3a).

6. A thermostatic valve for a radiator according to claim 1 or 2 or 3, characterised in that, The number of the first interface (1b) and the water passage cavity (1a) are both two. The two water passage cavities (1a) are symmetrically arranged on the valve body (1), and the two first interfaces (1b) are symmetrically arranged on the valve body (1). The valve seat (3) is threadedly connected to both water passage cavities (1a), and the connector (4) and cover (5) are connected to both valve seats (3).

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