Immersion sleeve for temperature sensor in heating system
By designing an immersion sleeve containing a spade-type positioning end and sealing ring, the thermostat is easily faulty in high temperature environments, extending sensor life and reducing maintenance costs, achieving more accurate temperature monitoring and higher heat transfer efficiency.
Patent Information
- Application Number
- CN202421104606.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The infiltration sleeve of the thermostat in the existing heating system lacks effective structural protection, which leads to the problem of temperature sensors being prone to failure in high temperature environments, which leads to problems such as temperature monitoring deviation and high maintenance costs.
An immersion sleeve for temperature sensor in a heating system is designed, including an immersion sleeve body with a receptacle cavity, a sealing ring, a sealing ring and a spade-type positioning end, which is fixedly connected by welding agent, combined with an elastic rubber jacket and a protective cover. Provides effective protection and positioning connections to ensure sealing effect.
It extends the service life of the temperature sensor, reduces the failure rate and maintenance cost, improves the efficiency of heat introduction and the accuracy of temperature detection, while reducing welding difficulty and leakage risks.
Smart Images
Figure CN222279954U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an immersion sleeve for a temperature sensor in a heating system. Background Art
[0002] A heating system refers to a system used to provide indoor heating. Here is a brief introduction to common heating methods: Traditional radiators: Traditional radiators are a common heating terminal that radiates heat into the indoor space by passing hot water through the radiator. Floor heating: Floor heating is a heating method that conducts heat into the room by installing heating equipment under the floor. Skirting heating: Skirting heating is a heating method that combines heating and the decorative function of skirtings. Radiant heating is achieved through water channels and fins hidden behind the skirtings. Ultra-thin water wall heating: Ultra-thin water wall heating is similar to traditional radiators, but is only 3cm thick and is installed close to the wall. It has the advantages of no dust and no wall fumigation.
[0003] Among them, water heating is a common heating method, which mainly transmits circulating hot water to the floor radiation layer through the ground coil, and utilizes the heat storage of the ground itself and the law of heat radiation upward to evenly heat the entire ground to achieve the purpose of heating. Compared with other heating methods, water heating has some advantages, so it is widely chosen to be installed in home decoration. The control system is one of the important components of the water heating system, which includes thermostats, valves, etc., which are used to control the operation and temperature regulation of the water heating system.
[0004] An immersion sleeve for a temperature sensor refers to a sleeve used to install a thermostat. Its function is to install the thermostat in the controlled object so that the temperature can be monitored and controlled. The main function of the immersion sleeve is to fix and protect the thermostat and connect it to the temperature contact surface of the controlled object. It ensures that the thermostat can accurately sense the temperature of the controlled object and perform control operations according to the set temperature range. Immersion sleeves are usually installed in temperature-sensitive areas of the controlled object, such as the surface of pipes, containers or heating equipment. By installing the thermostat immersion sleeve in these locations, accurate monitoring and control of the temperature of the controlled object can be achieved. The type and specifications of the immersion sleeve can vary according to specific application requirements. Common materials for thermostat immersion sleeves include stainless steel, copper, and plastic. In addition, immersion sleeves with different lengths and diameters can also be selected according to the characteristics and temperature range of the controlled object. When installing the thermostat immersion sleeve, you first need to select the appropriate immersion sleeve size and material. Then, insert the thermostat into the immersion sleeve and fix it to the controlled object using threads or other fixings. Ensure that the temperature contact surface of the thermostat and the controlled object fits tightly to ensure accurate temperature measurement and control. In short, the thermostat immersion sleeve is a sleeve used to install the thermostat, which can ensure that the temperature contact surface of the thermostat and the controlled object fits tightly to achieve accurate temperature measurement and control.
[0005] As an example of the prior art, refer to patent document CN212363499U, which discloses a wall-mounted boiler water heating sensor, comprising a first shell, a second shell, a baffle sleeve, a spring, a baffle, a fixed shell, a water temperature sensor, a bottom shell, a bracket and a wire tube, wherein the open end of the second shell is provided with a bracket, and the middle part of the bracket is provided with a bottom shell, and the water temperature sensor is installed in the fixed shell and the water temperature sensor is connected to the fixed shell by a thread; the wall-mounted boiler water heating sensor wraps the entire water temperature sensor in hot water, which can prevent the body of the water temperature sensor from dissipating the heat of the water temperature sensor probe and prevent the temperature of the water temperature sensor probe from decreasing. At the same time, when hot water is introduced at the water inlet interface, the cold water at the water temperature sensor sleeve can be quickly squeezed away, so that the probe of the water temperature sensor can quickly and accurately detect the temperature of the hot water; the wall-mounted boiler water heating sensor can quickly and accurately detect the water temperature of the hot water supplied by the wall-mounted boiler.
[0006] Combining the technical examples with other existing technologies, there are certain defects, such as: lack of structural description of the thermostat immersion sleeve, but directly wrapping the water temperature sensor in hot water, which needs to work continuously in a high temperature environment. Therefore, the water temperature sensor is prone to failure in the absence of effective protection, which leads to deviations in temperature monitoring and makes the wall-mounted boiler unable to be used normally. In addition, the disassembly and assembly of the wall-mounted boiler is relatively cumbersome, and the cost of repairing and replacing the water temperature sensor is also high, which is bound to increase the user's cost of use. Summary of the invention
[0007] In order to overcome the above-mentioned deficiencies in the prior art, the utility model provides an immersion sleeve for a temperature sensor in a heating system.
[0008] The utility model solves the technical problem by providing an immersion sleeve for a temperature sensor in a heating system, comprising:
[0009] An immersion sleeve body, wherein the interior of the immersion sleeve body has a receiving cavity for placing the temperature sensor, wherein one end of the immersion sleeve body is a closed end, and the other end has an opening hole communicating with the receiving cavity;
[0010] A sealing ring body having a through insertion hole, the sealing ring body is fixedly connected to the immersion sleeve body, and the insertion hole is butted against and connected to the opening hole;
[0011] Also included are:
[0012] A sealing ring, wherein an annular groove is formed on the outer wall of the sealing ring body, the sealing ring is embedded in the annular groove, and at least part of the sealing ring protrudes outside the annular groove;
[0013] The closed end of the immersion sleeve body is extruded to form a spade-shaped positioning end.
[0014] Preferably, the cross section of the spade-shaped positioning end is in the shape of an I or a X.
[0015] In some embodiments of the present utility model, the insertion hole has a limiting step, and the limiting step divides the insertion hole into a first section and a second section;
[0016] The immersion sleeve body at least partially extends into the second section and abuts against the limiting step to form a limiting fit;
[0017] The immersion sleeve body and the insertion hole form a clearance fit, and the immersion sleeve body is fixedly connected with the sealing ring body through welding agent.
[0018] A more preferred embodiment further comprises an elastic rubber jacket, wherein the elastic rubber jacket is arranged in the second section, and the immersion sleeve body is inserted into the elastic rubber jacket, so that the elastic rubber jacket forms an interference fit with the sealing ring body and the immersion sleeve body respectively.
[0019] Furthermore, the elastic rubber jacket comprises a large diameter section and a small diameter section, the small diameter section is provided with a deformation notch, and the small diameter section is arranged in an inclined manner;
[0020] The large diameter section forms a clearance fit with the immersion sleeve body to form a passing gap;
[0021] The small diameter section forms an interference fit with the immersion sleeve body.
[0022] Furthermore, an abutment protrusion is formed on the outer wall of the large-diameter section and extends outward, and the abutment protrusion can abut against the inner wall of the second section.
[0023] In some preferred embodiments of the present invention, the sealing ring body is connected to a protective cover, and the protective cover can be covered on the sealing ring body to cover the insertion hole.
[0024] Furthermore, the protective cover is provided with a plurality of strip grooves, and the strip grooves are evenly arranged in a ring shape with the center point of the protective cover as the center.
[0025] In some preferred embodiments of the present utility model, the opening hole is circular, the insertion hole is a regular hexagonal insertion hole, and the diameter of the insertion hole is larger than the diameter of the opening hole.
[0026] In some preferred embodiments of the present invention, the bottom of the annular groove is provided with straight knurling.
[0027] The beneficial effects of the utility model are:
[0028] 1. In the water heating system, an immersion sleeve dedicated to the temperature sensor is provided to provide effective protection for the temperature sensor, which can greatly extend the service life of the temperature sensor, reduce the probability of failure, and reduce maintenance costs. In addition, the immersion sleeve is preferably made of a material with high thermal conductivity such as stainless steel and copper alloy, so that the heat in the water heating system can be more quickly introduced into the immersion sleeve and accurately detected by the temperature sensor.
[0029] 2. The spade-shaped positioning end can be inserted into the positioning groove in the work station to achieve the positioning connection function, and the sealing ring is used to abut against the inner wall of the work station to provide support and sealing isolation. At the same time, the temperature sensor is also communicated with the electrical control panel of the water-heating wall-mounted boiler (heating system).
[0030] 3. The sealing ring can be in a more stable and consistent shape in the annular groove, reducing the probability of its distortion and displacement due to force, thereby ensuring a good sealing effect in later use. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 It is a structural schematic diagram of the utility model.
[0032] Figure 2 It is an exploded view of the utility model.
[0033] Figure 3 It is a half-section diagram of the utility model (excluding the sealing ring) and an enlarged schematic diagram of the local structure.
[0034] Figure 4 It is a structural diagram of a "cross" shovel-shaped positioning end.
[0035] Figure 5 It is a structural diagram of embodiment 3.
[0036] Figure 6 It is a schematic diagram of the structure when the protective cover has a strip groove in the third embodiment.
[0037] Figure 7 It is a schematic diagram of the use of a protective cover with strip grooves and a temperature sensor.
[0038] Figure 8 It is a schematic diagram comparing the welding structure in the second embodiment and the welding structure in the prior art.
[0039] Fig. 9 It is a schematic diagram of an immersion sleeve in a water-heating wall-mounted boiler.
[0040] Fig.10 It is a structural schematic diagram of the elastic rubber jacket.
[0041] In the figure: 1. Immersion sleeve body; 11. Accommodating cavity; 12. Closed end; 13. Open hole; 14. Shovel-shaped positioning end; 2. Sealing ring body; 21. Insertion hole; 211. First section; 222. Second section; 22. Annular groove; 221. Straight knurling; 23. Limiting step; 3. Sealing ring; 4. Temperature sensor; 41. Sensing end; 42. Wiring terminal; 5. Water-heating wall-mounted boiler; 51. Positioning groove; 52. Water environment; 53. Inner wall at the work station; 6. Welding agent; 7. Elastic rubber jacket; 71. Large diameter section; 711. Abutment protrusion; 72. Small diameter section; 721. Deformation notch; 73. Through gap; 8. Protective cover; 81. Center point of protective cover; 82. Strip groove. DETAILED DESCRIPTION
[0042] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments are only specific descriptions of the present invention, and their purpose is to allow those skilled in the art to better understand the technical solution of the present invention, and should not be regarded as limiting the present invention.
[0043] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0045] Embodiment 1
[0046] Reference Figures 1 to 10 , an immersion sleeve for a temperature sensor in a heating system, comprising:
[0047] The immersion sleeve body 1 has a receiving cavity 11 for placing the temperature sensor 4 therein, one end of the immersion sleeve body 1 is a closed end 12, and the other end has an opening hole 13 communicating with the receiving cavity 11;
[0048] The sealing ring body 2 has a through insertion hole 21, the sealing ring body 2 is fixedly connected to the immersion sleeve body 1, and the insertion hole 21 is connected to the opening hole 13 and is in conduction;
[0049] It is worth mentioning that the immersion sleeve provided by the utility model also includes:
[0050] The sealing ring 3 is provided with an annular groove 22 on the outer wall of the sealing ring body 2, the sealing ring 3 is embedded in the annular groove 22, and the sealing ring 3 at least partially protrudes outside the annular groove 22;
[0051] The closed end 12 of the immersion sleeve body 1 is formed into a spade-shaped positioning end 14 after being extruded.
[0052] The above content is the basic structural scheme of the utility model, and its installation method is: the user first inserts the temperature sensor 4 into the accommodating cavity 11 of the immersion sleeve body 1 through the insertion hole 21 and the opening hole 13, and then puts the entire immersion sleeve into the corresponding station of the water-heating wall-mounted boiler 5 (heating system), wherein the spade-shaped positioning end 14 can be inserted into the positioning groove 51 in the station to achieve the positioning connection function, and the sealing ring 3 is against the inner wall 53 of the station to provide support, sealing and isolation. At the same time, the temperature sensor 4 is also connected to the electric control board of the water-heating wall-mounted boiler 5 (heating system) for communication.
[0053] The working principle is as follows: the immersion sleeve is in the water environment 52 at the work station, and the temperature in the water environment 52 is transmitted to the temperature sensor 4 in the accommodating cavity 11 through the immersion sleeve body 1, so that the temperature sensor 4 feeds back the temperature monitoring result to the electric control board.
[0054] Preferably, the cross section of the spade-shaped positioning end 14 is in the shape of a "I" or a "X". Figure 1 When the "I" shape is used, its advantage is that it is easy to form and the processing difficulty is relatively low, but the disadvantage is that the effect of positioning connection is average; refer to Figure 4 The "cross" shaped spade-shaped positioning end 14 is adopted, which has the advantages of more balanced force and more stable and reliable positioning connection, but has the disadvantages of more complex structure and greater processing difficulty.
[0055] Preferably, the opening hole 13 is circular, matching the shape of the sensing end 41 of the conventional temperature sensor 4; Figure 1 The insertion hole 21 is a regular hexagonal insertion hole 21, which matches the shape of the hexagonal column of the terminal 42 of the conventional temperature sensor 4; and the aperture of the insertion hole 21 is larger than the aperture of the opening hole 13 to prevent the insertion hole 21 from blocking the opening hole 13, so that the temperature sensor 4 can smoothly enter the accommodating cavity 11.
[0056] Preferably, refer to Figure 3 A straight knurling 221 is provided at the bottom of the annular groove 22 to increase the contact area between the annular groove 22 and the sealing ring 3 and provide a larger contact friction force, so that when the temperature sensor 4 is installed in the heating system with an immersion sleeve, the sealing ring 3 can be in the annular groove 22 in a more stable and consistent form, reducing the probability of distortion and displacement under force, thereby ensuring a good sealing effect during later use.
[0057] Embodiment 2
[0058] Reference Figure 8 There are various ways to connect the immersion sleeve body 1 and the sealing ring body 2, such as snap connection, threaded connection, etc. Since the use environment is a water environment 52, it is necessary to have a sealing and leak-proof function, and the two are preferably fixedly connected by welding. Generally, the immersion sleeve body 1 will not extend into the insertion hole 21, but the end of the immersion sleeve body 1 is directly welded to the end of the sealing ring body 2, but this welding method will increase the difficulty of welding, and it is easy to desolder, the welding firmness is relatively low, and it is more likely to leak during use.
[0059] Based on the structure of the first embodiment, the preferred structure adopted in this embodiment is as follows: Figure 2-Figure 3 The insertion hole 21 has a limiting step 23, and the limiting step 23 divides the insertion hole 21 into a first section 211 and a second section 222; the immersion sleeve body 1 at least partially extends into the second section 222 and abuts against the limiting step 23 to form a limiting fit; the immersion sleeve body 1 forms a clearance fit with the insertion hole 21, and the immersion sleeve body 1 is fixedly connected to the sealing ring body 2 through the welding agent 6.
[0060] The immersion sleeve body 1 and the insertion hole 21 are clearance-matched to facilitate smooth insertion of the immersion sleeve body 1. Before welding, the utility model extends the immersion sleeve body 1 at least partially into the second section 222, and limits the insertion depth of the immersion sleeve body 1 through the limiting step 23 to improve the matching accuracy, and then the immersion sleeve body 1 and the sealing ring body 2 are welded and fixed. Compared with conventional welding structures, the immersion sleeve body 1 and the sealing ring body 2 of this embodiment have a larger contact and welding area, which can effectively improve the welding firmness and sealing performance. At the same time, the limiting step 23 provides a positioning function, reduces the processing difficulty during welding, and improves the consistency of the product after welding.
[0061] A more noteworthy structure is that, with reference to Figure 3 , Fig.10, and also includes an elastic rubber jacket 7, which is arranged in the second section 222. When the immersion sleeve body 1 is not inserted, the elastic rubber jacket 7 is in an initial state (i.e., a contracted state). When the immersion sleeve body 1 extends into the second section 222, the immersion sleeve body 1 penetrates into the elastic rubber jacket 7 to open the elastic rubber jacket 7 (i.e., an expanded state), so that the elastic rubber jacket 7 in the expanded state forms an interference fit with the sealing ring body 2 and the immersion sleeve body 1 respectively, so as to eliminate the gap between the immersion sleeve body 1 and the insertion hole 21, so that the immersion sleeve body 1 can be more stably in the insertion hole 21, so as to maintain the stability of the relative position of the two, so as to facilitate subsequent welding work. At this time, if it is necessary to separate the immersion sleeve body 1 from the sealing ring body 2, it is necessary to apply a sufficiently large insertion and extraction force to overcome the contact friction between the elastic rubber jacket 7 and the sealing ring body 2 and the immersion sleeve body 1.
[0062] Furthermore, the elastic rubber jacket 7 includes a large diameter section 71 and a small diameter section 72, the small diameter section 72 is provided with a deformation notch 721, and the small diameter section 72 is inclined; the large diameter section 71 forms a clearance fit with the immersion sleeve body 1 to form a through gap 73, which is convenient for the immersion sleeve body 1 to be inserted; the small diameter section 72 forms an interference fit with the immersion sleeve body 1. The small diameter section 72 as a whole presents a physical structure similar to a clamping claw to better clamp the immersion sleeve body 1.
[0063] On the other hand, the outer wall of the large diameter section 71 is further extended outward to form a contact protrusion 711, which can contact the inner wall of the second section 222. When the immersion sleeve body 1 is not inserted into the elastic rubber jacket 7 body, the contact protrusion 711 (large diameter section 71) is restricted by the inner wall of the second section 222 and shrinks and deforms inward; when the immersion sleeve body 1 is inserted into the elastic rubber jacket 7 body, the immersion sleeve body 1 opens the second section 222, and then the contact protrusion 711 expands outward and contacts between the immersion sleeve body 1 and the inner wall of the second section 222 to eliminate the gap 73, so that the immersion sleeve body 1 and the second section 222 form a close fitting relationship.
[0064] Embodiment 3
[0065] Reference Figure 5 In some preferred embodiments of the utility model, the sealing ring body 2 is connected with a protective cover 8, and the protective cover 8 can be covered on the sealing ring body 2 to cover the insertion hole 21. When the immersion sleeve is not used, for example, during production packaging or transportation and storage, the protective cover 8 can cover the insertion hole 21, so that the accommodating cavity 11 forms a relatively closed space to prevent impurities from entering, thereby improving effective dustproof, waterproof and other protective effects.
[0066] Further, refer to Figure 6 , Figure 7 , the protective cover 8 is provided with a plurality of strip grooves 82, and the strip grooves 82 are evenly arranged in a ring shape with the center point of the protective cover 8 as the center. Preferably, the strip grooves 82 are combined to form a "M"-shaped combination. The protective cover 8 with the strip grooves 82, firstly, can play the role of the aforementioned middle cover and sealing ring body 2, and play a protective role such as dustproof and waterproof; secondly, during use, the temperature sensor 4 can partially open the protective cover 8 and connect to the accommodating cavity 11 through the "M"-shaped strip groove 82, so that the protective cover 8 does not need to be disassembled under actual working conditions, and can be close to the temperature sensor 4, continuously playing a protective role such as dustproof and waterproof.
[0067] It is worth noting that other technical solutions of the present invention belong to the prior art and will not be described in detail.
[0068] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the concept of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. An immersion sleeve for a temperature sensor in a heating system, comprising: An immersion sleeve body (1) has a receiving cavity (11) inside thereof for accommodating a temperature sensor (4); one end of the immersion sleeve body (1) is a closed end (12), and the other end has an opening hole (13) communicating with the receiving cavity (11); A sealing ring body (2) having a through insertion hole (21), wherein the sealing ring body (2) is fixedly connected to the immersion sleeve body (1), and the insertion hole (21) is butted against and connected to the opening hole (13); It is characterized in that Also included are: A sealing ring (3), wherein an annular groove (22) is formed on the outer wall of the sealing ring body (2), the sealing ring (3) is embedded in the annular groove (22), and the sealing ring (3) at least partially protrudes outside the annular groove (22); The closed end (12) of the immersion sleeve body (1) is extruded to form a spade-shaped positioning end (14).
2. The immersion sleeve for a temperature sensor in a heating system according to claim 1, characterized in that: The cross section of the shovel-shaped positioning end (14) is in the shape of a straight line or a cross.
3. The immersion sleeve for a temperature sensor in a heating system according to claim 1, characterized in that: The insertion hole (21) has a limiting step (23), and the limiting step (23) divides the insertion hole (21) into a first section (211) and a second section (222); The immersion sleeve body (1) at least partially extends into the second section (222) and abuts against the limiting step (23) to form a limiting fit; The immersion sleeve body (1) and the insertion hole (21) form a clearance fit, and the immersion sleeve body (1) is fixedly connected to the sealing ring body (2) via a welding agent (6).
4. The immersion sleeve for a temperature sensor in a heating system according to claim 3, characterized in that: It also includes an elastic rubber jacket (7), which is arranged in the second section (222), and the immersion sleeve body (1) is inserted into the elastic rubber jacket (7), so that the elastic rubber jacket (7) forms an interference fit with the sealing ring body (2) and the immersion sleeve body (1), respectively.
5. The immersion sleeve for a temperature sensor in a heating system according to claim 4, characterized in that: The elastic rubber jacket (7) comprises a large diameter section (71) and a small diameter section (72); a deformation notch (721) is provided on the small diameter section (72), and the small diameter section (72) is arranged in an inclined manner; The large diameter section (71) forms a clearance fit with the immersion sleeve body (1) to form a passing gap (73); The small diameter section (72) forms an interference fit with the immersion sleeve body (1).
6. The immersion sleeve for a temperature sensor in a heating system according to claim 5, characterized in that: An abutment protrusion (711) is also formed on the outer wall of the large-diameter section (71) and extends outwards. The abutment protrusion (711) can abut against the inner wall of the second section (222).
7. The immersion sleeve for a temperature sensor in a heating system according to claim 1, characterized in that: The sealing ring body (2) is connected to a protective cover (8), and the protective cover (8) can be covered on the sealing ring body (2) to cover the insertion hole (21).
8. The immersion sleeve for a temperature sensor in a heating system according to claim 7, characterized in that: The protective cover (8) is provided with a plurality of strip-shaped grooves (82), and the strip-shaped grooves (82) are evenly arranged in a ring shape with the center point of the protective cover (8) as the center.
9. The immersion sleeve for a temperature sensor in a heating system according to claim 1, characterized in that: The opening hole (13) is circular, the insertion hole (21) is a regular hexagonal insertion hole (21), and the diameter of the insertion hole (21) is larger than the diameter of the opening hole (13).
10. The immersion sleeve for a temperature sensor in a heating system according to claim 1, characterized in that: The bottom of the annular groove (22) is provided with straight knurling (221).