CN219370903U - Low-cost liquid expansion type temperature controller - Google Patents
Low-cost liquid expansion type temperature controller Download PDFInfo
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- CN219370903U CN219370903U CN202320450436.5U CN202320450436U CN219370903U CN 219370903 U CN219370903 U CN 219370903U CN 202320450436 U CN202320450436 U CN 202320450436U CN 219370903 U CN219370903 U CN 219370903U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model relates to a low-cost liquid expansion type temperature controller which comprises a BMC base, a liquid temperature sensing element, a diaphragm capsule, a push rod device, a first terminal, a second terminal, a reed seat, a movable contact piece, a static contact piece and a fine adjustment mechanism, wherein the reed seat is arranged in the BMC base; the liquid temperature sensing element is connected with the diaphragm capsule, the temperature sensing part of the liquid temperature sensing element extends out of the BMC base, when the temperature sensing part monitors that the temperature of a controlled object changes, the diaphragm capsule expands or contracts along with the temperature change, the diaphragm capsule pushes the push rod device to move downwards when expanding, the movable contact piece is separated from the static contact piece, and when contracting, the push rod device is pushed to return to an initial position, and the movable contact piece is contacted with the static contact piece.
Description
Technical Field
The utility model relates to a low-cost liquid expansion type temperature controller.
Background
The liquid expansion temperature controller (Liquid Expansion Thermostat) is a temperature controller based on the thermal expansion principle and is commonly used in industrial automation and heating ventilation air conditioning systems.
Liquid expanding temperature controller working principle: when the temperature of the controlled object changes, the working medium (liquid) in the temperature sensing part of the temperature controller generates a corresponding physical phenomenon (volume change) of thermal expansion and contraction, and the bellows communicated with the temperature sensing part generates expansion or contraction.
When the temperature reaches a set value, the bellows expands to drive the push rod device to move, the push rod device applies pressure until the movable contact piece and the static contact piece are separated, and the purpose of power failure is achieved, otherwise, when the temperature is reduced, the bellows contracts to drive the push rod device to withdraw, the movable contact piece loses pressure, and the movable contact piece and the static contact piece are combined again to be electrified.
The temperature control device has the advantages of simple structure, high reliability, high response speed and the like, and is widely applied to various temperature control systems.
However, the base of the existing liquid expansion temperature controller adopts ceramic, and the ceramic often has the problems of large size consistency difference, crushing, deformation and the like in the production process, so that the automatic production cannot be met, and the loss rate is high.
Disclosure of Invention
The utility model aims to provide a low-cost liquid expansion type temperature controller with low cost.
The purpose of the utility model is realized in the following way:
the low-cost liquid expansion type temperature controller comprises a BMC base, a liquid temperature sensing element, a diaphragm capsule, a push rod device, a first terminal, a second terminal, a reed seat, a movable contact piece, a static contact piece and a fine adjustment mechanism, wherein the reed seat is arranged in the BMC base;
the static contact is arranged in the BMC base, the second terminal is arranged in the BMC base, one end of the second terminal is connected with the static contact, and the other end of the second terminal extends out of the BMC base;
the push rod device is arranged in the BMC base and is positioned above the movable contact piece, the diaphragm capsule is arranged in the BMC base and is positioned above the push rod device, and the fine adjustment mechanism is arranged in the BMC base and is positioned on the diaphragm capsule;
the liquid temperature sensing element is connected with the diaphragm capsule, the temperature sensing part of the liquid temperature sensing element extends out of the BMC base, when the temperature sensing part monitors that the temperature of a controlled object changes, the diaphragm capsule expands or contracts along with the temperature change, the diaphragm capsule pushes the push rod device to move downwards when expanding, the movable contact piece is separated from the static contact piece, and when contracting, the push rod device is pushed to return to an initial position, and the movable contact piece is contacted with the static contact piece.
The BMC base manufactured by adopting the novel material BMC with the performance close to that of ceramic has the plasticity, rigidity and electrical performance comparable to those of ceramic, is a qualified substitute, and has the advantages of high manufacturing dimensional accuracy, fire resistance, high hardness, extremely small high-temperature deformation, low price and greatly reduced production cost of the low-cost liquid expansion type temperature controller.
The aim of the utility model can be also solved by adopting the following technical measures:
further, the first terminal and the spring mount are integrally formed to form a first assembly. The integrated forming reduces production parts, improves production efficiency, and can reduce resistance and heat productivity when being electrified due to the integration of the two parts, thereby improving product quality.
Further, the spring plate seat is provided with a convex point, the movable contact piece is provided with a jack, and the convex point of the spring plate seat is inserted into the jack of the movable contact piece, so that the movable contact piece is positioned and installed on the spring plate seat. The movable contact piece is positioned and installed on the reed seat by inserting the convex points into the insertion holes, so that the installation is simpler and the installation position is more accurate.
Further, the BMC base is provided with a first opening, the first assembly is locked in the BMC base through a bolt, one end of the first terminal penetrates through the first opening and stretches out of the BMC base, the side wall of the first terminal located outside the BMC base is provided with a fulcrum, and meanwhile the fulcrum is propped against the side wall of the BMC base. The first terminal is locked in the BMC base through the bolt, the installation is simple and reliable, the pivot is propped against the side wall of the BMC base, the installation, the positioning and the supporting effects can be achieved, and the problem of screw loosening caused by overlarge plugging force when the temperature controller is used is prevented.
Further, the second terminal and the stationary contact are integrally formed to form a second assembly. The integrated forming reduces production parts, improves production efficiency, and can reduce resistance and heat productivity when being electrified due to the integration of the two parts, thereby improving product quality.
Further, the BMC base is provided with a second opening, a positioning protrusion is arranged at the second opening, one side of the second terminal is bent to form a step, the step is connected with the static contact, the second assembly is locked in the BMC base through a bolt, one end of the second terminal penetrates through the second opening to extend out of the BMC base, and meanwhile the positioning protrusion is clung to the step. The second terminal is locked in the BMC base through the bolt, the installation is simple and reliable, the positioning protrusion clings to the step, the installation, positioning and supporting effects can be achieved, and the problem of screw loosening caused by overlarge plugging force when the temperature controller is used is prevented.
Further, the side wall of the BMC base is provided with a bending hook. The bending hooks clamp the capillary tube and the sheath tube of the liquid temperature sensing element, so that inaccurate temperature of a product caused by pulling of the capillary tube in the production or use process is prevented.
Further, the liquid temperature sensing element comprises a temperature sensing barrel, a capillary tube and a sheath tube, wherein the sheath tube is sleeved on the capillary tube, one end of the capillary tube is communicated with the temperature sensing barrel, the other end of the capillary tube is communicated with the diaphragm capsule, the temperature sensing barrel is positioned outside the BMC base, and the temperature sensing barrel forms a temperature sensing part of the liquid temperature sensing element.
The beneficial effects of the utility model are as follows:
the BMC base manufactured by adopting the novel material BMC with performance close to that of ceramic has plasticity, rigidity and electrical performance comparable to those of ceramic, is a qualified substitute, and has the advantages of high dimensional accuracy, fire resistance, high hardness, extremely small high-temperature deformation, low price and greatly reduced production cost of the low-cost liquid expansion type temperature controller.
According to the utility model, the first terminal and the reed seat are integrally formed, the second terminal and the static contact piece are integrally formed, the production parts are reduced, the production efficiency is improved, and the resistance value and the heating value during electrifying can be reduced due to the integration of the two parts, so that the product quality is improved.
According to the utility model, the first terminal is locked in the BMC base through the bolt, the installation is simple and reliable, meanwhile, the supporting point is abutted against the side wall of the BMC base, the installation, positioning and supporting functions can be realized, the problem of screw loosening caused by overlarge plugging force when the temperature controller is used is prevented, the second terminal is locked in the BMC base through the bolt, the installation is simple and reliable, meanwhile, the positioning protrusion clings to the step, the installation, positioning and supporting functions can be realized, and the problem of screw loosening caused by overlarge plugging force when the temperature controller is used is prevented.
According to the utility model, the bending hooks clamp the capillary tube and the sheath tube of the liquid temperature-sensing element, so that inaccurate product temperature caused by pulling of the capillary tube in the production or use process is prevented.
Drawings
FIG. 1 is a schematic diagram of a low cost liquid expansion thermostat.
FIG. 2 is another angular schematic view of a low cost liquid expansion thermostat.
FIG. 3 is a cross-sectional view of a low cost liquid expansion thermostat.
Fig. 4 is a schematic view of a low cost liquid expansion thermostat (with parts hidden).
Fig. 5 is a cross-sectional view of fig. 4.
Fig. 6 is a schematic view of a low cost liquid expansion thermostat (with parts hidden, with the first terminal, second terminal and BMC base separated).
Fig. 7 is another angular schematic view of the low cost liquid expansion thermostat (with parts hidden, with the first terminal, second terminal and BMC base separated).
Fig. 8 is an exploded view of a low cost liquid expansion thermostat.
Detailed Description
The utility model is further described below with reference to the accompanying drawings and examples:
the embodiment is shown in connection with fig. 1 to 8, and a low-cost liquid expansion type temperature controller comprises a BMC base 1, a liquid temperature sensing element 2, a diaphragm capsule 3, a push rod device 4, a first terminal 5, a second terminal 6, a reed seat 7, a movable contact piece 8, a static contact piece 9 and a fine adjustment mechanism 10, wherein the reed seat 7 is arranged in the BMC base 1, the movable contact piece 8 is connected with the reed seat 7 in the BMC base 1, the first terminal 5 is arranged in the BMC base 1, one end of the first terminal 5 is connected with the reed seat 7, and the other end of the first terminal 5 extends out of the BMC base 1;
the static contact 9 is arranged in the BMC base 1, the second terminal 6 is arranged in the BMC base 1, one end of the second terminal 6 is connected with the static contact 9, and the other end of the second terminal 6 extends out of the BMC base 1;
the push rod device 4 is arranged in the BMC base 1 and is positioned above the movable contact piece 8, the diaphragm capsule 3 is arranged in the BMC base 1 and is positioned above the push rod device 4, and the fine adjustment mechanism 10 is arranged in the BMC base 1 and is positioned on the diaphragm capsule 3;
the liquid temperature sensing element 2 is connected with the diaphragm capsule 3, the temperature sensing part of the liquid temperature sensing element 2 stretches out of the BMC base 1, when the temperature sensing part detects that the temperature of a controlled object changes, the diaphragm capsule 3 expands or contracts along with the temperature change, the diaphragm capsule 3 pushes the push rod device 4 to move downwards when expanding, the movable contact piece 8 is separated from the static contact piece 9, when the diaphragm capsule 3 contracts, the push rod device 4 is pushed to return to the initial position, and the movable contact piece 8 is contacted with the static contact piece 9.
Further, the first terminal 5 and the spring base 7 are integrally formed to form the first assembly 200.
Further, the spring plate seat 7 is provided with a protruding point 71, the movable contact plate 8 is provided with a jack 81, and the protruding point 71 of the spring plate seat 7 is inserted into the jack 81 of the movable contact plate 8, so that the movable contact plate 8 is positioned and mounted on the spring plate seat 7.
Further, the BMC base 1 is provided with a first opening 11, the first assembly 200 is locked in the BMC base 1 by a bolt 100, one end of the first terminal 5 extends out of the BMC base 1 through the first opening 11, a supporting point 51 is arranged on the side wall of the first terminal 5 located outside the BMC base 1, and meanwhile the supporting point 51 abuts against the side wall of the BMC base 1.
Further, the second terminal 6 and the stationary contact 9 are integrally formed to form a second assembly 300.
Further, the BMC base 1 is provided with a second opening 12, a positioning protrusion 13 is disposed at the second opening 12 of the BMC base 1, a step 61 is formed by bending one side of the second terminal 6, the step 61 is connected with the stationary contact 9, the second assembly 300 is locked in the BMC base 1 through a bolt 100, one end of the second terminal 6 extends out of the BMC base 1 through the second opening 12, and the positioning protrusion 13 is tightly attached to the step 61.
Further, the side wall of the BMC base 1 is provided with a bending hook 14.
Further, the liquid temperature sensing element 2 includes a temperature sensing tube 21, a capillary tube 22 and a sheath tube 23, the sheath tube 23 is sleeved on the capillary tube 22, one end of the capillary tube 22 is communicated with the temperature sensing tube 21, the other end of the capillary tube 22 is communicated with the bellows 3, the temperature sensing tube 21 is located outside the BMC base 1, and the temperature sensing tube 21 forms a temperature sensing part of the liquid temperature sensing element 2.
The bending hook 14 clamps the capillary tube 22 and the sheath tube 23 of the liquid temperature sensing element 2, so that the phenomenon that the temperature of a product is inaccurate due to the fact that the capillary tube 22 is pulled in the production or use process is prevented.
Working principle:
when the temperature of the controlled object rises to a set value, the working medium (liquid) in the temperature sensing cylinder 21 generates a corresponding physical phenomenon (volume change) of thermal expansion and cold contraction, so that the diaphragm capsule 3 communicated with the temperature sensing cylinder 21 expands, the diaphragm capsule 3 expands to drive the push rod device 4 to move, the push rod device 4 applies pressure until the movable contact piece 8 deforms, and the movable contact piece 8 and the static contact piece 9 are separated, thereby achieving the purpose of power failure.
When the temperature of the controlled object is reduced, the working medium (liquid) in the temperature sensing barrel 21 generates a corresponding physical phenomenon (volume change) of thermal expansion and contraction, so that the diaphragm capsule 3 communicated with the temperature sensing barrel 21 contracts, the diaphragm capsule 3 contracts to drive the push rod device 4 to withdraw, the movable contact 8 loses pressure, the movable contact 8 is restored to an initial state, and the movable contact 8 and the static contact 9 are combined again for electrifying.
Claims (8)
1. The utility model provides a low-cost liquid formula temperature controller that rises, includes BMC base, liquid temperature sensing element, bellows, push rod device, first terminal, second terminal, reed seat, movable contact piece, static contact piece and fine setting mechanism, its characterized in that:
the movable contact piece is arranged in the BMC base and connected with the reed base, the first terminal is arranged in the BMC base, one end of the first terminal is connected with the reed base, and the other end of the first terminal extends out of the BMC base;
the static contact is arranged in the BMC base, the second terminal is arranged in the BMC base, one end of the second terminal is connected with the static contact, and the other end of the second terminal extends out of the BMC base;
the push rod device is arranged in the BMC base and is positioned above the movable contact piece, the diaphragm capsule is arranged in the BMC base and is positioned above the push rod device, and the fine adjustment mechanism is arranged in the BMC base and is positioned on the diaphragm capsule;
the liquid temperature sensing element is connected with the diaphragm capsule, the temperature sensing part of the liquid temperature sensing element extends out of the BMC base, when the temperature sensing part monitors that the temperature of a controlled object changes, the diaphragm capsule expands or contracts along with the temperature change, the diaphragm capsule pushes the push rod device to move downwards when expanding, the movable contact piece is separated from the static contact piece, and when contracting, the push rod device is pushed to return to an initial position, and the movable contact piece is contacted with the static contact piece.
2. The low cost liquid expansion thermostat of claim 1, wherein: the first terminal and the spring mount are integrally formed to form a first assembly.
3. The low cost liquid expansion thermostat of claim 2, wherein: the spring plate seat is provided with protruding points, the movable contact piece is provided with inserting holes, and the protruding points of the spring plate seat are inserted into the inserting holes of the movable contact piece, so that the movable contact piece is positioned and installed on the spring plate seat.
4. The low cost liquid expansion thermostat of claim 2, wherein: the BMC base is provided with a first opening, the first assembly is locked in the BMC base through a bolt, one end of the first terminal penetrates through the first opening and stretches out of the BMC base, the side wall of the first terminal located outside the BMC base is provided with a fulcrum, and meanwhile the fulcrum is propped against the side wall of the BMC base.
5. The low cost liquid expansion thermostat of claim 1, wherein: the second terminal and the stationary contact are integrally formed to form a second assembly.
6. The low cost liquid expansion thermostat of claim 5, wherein: the BMC base is provided with a second opening, the BMC base is provided with a positioning bulge at the second opening, one side of the second terminal is bent to form a step, the step is connected with the static contact, the second assembly is locked in the BMC base through a bolt, one end of the second terminal penetrates through the second opening to extend out of the BMC base, and meanwhile the positioning bulge is clung to the step.
7. The low cost liquid expansion thermostat of claim 1, wherein: the BMC base lateral wall is provided with the hook of buckling.
8. The low cost liquid expansion thermostat of claim 1, wherein: the liquid temperature sensing element comprises a temperature sensing barrel, a capillary tube and a sheath tube, wherein the sheath tube is sleeved on the capillary tube, one end of the capillary tube is communicated with the temperature sensing barrel, the other end of the capillary tube is communicated with the diaphragm capsule, the temperature sensing barrel is positioned outside the BMC base, and the temperature sensing barrel forms a temperature sensing part of the liquid temperature sensing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320450436.5U CN219370903U (en) | 2023-03-09 | 2023-03-09 | Low-cost liquid expansion type temperature controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320450436.5U CN219370903U (en) | 2023-03-09 | 2023-03-09 | Low-cost liquid expansion type temperature controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219370903U true CN219370903U (en) | 2023-07-18 |
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ID=87141646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320450436.5U Active CN219370903U (en) | 2023-03-09 | 2023-03-09 | Low-cost liquid expansion type temperature controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219370903U (en) |
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2023
- 2023-03-09 CN CN202320450436.5U patent/CN219370903U/en active Active
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