CN220963141U - Direct-pushing liquid-expansion temperature controller - Google Patents
Direct-pushing liquid-expansion temperature controller Download PDFInfo
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- CN220963141U CN220963141U CN202323048952.4U CN202323048952U CN220963141U CN 220963141 U CN220963141 U CN 220963141U CN 202323048952 U CN202323048952 U CN 202323048952U CN 220963141 U CN220963141 U CN 220963141U
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- temperature sensing
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- 239000007788 liquid Substances 0.000 claims abstract description 52
- 239000002775 capsule Substances 0.000 claims abstract description 31
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 210000000078 claw Anatomy 0.000 claims description 28
- 230000003068 static effect Effects 0.000 claims description 21
- 230000008859 change Effects 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 239000000919 ceramic Substances 0.000 description 7
- 239000000428 dust Substances 0.000 description 7
- 230000008602 contraction Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model relates to a direct-push type liquid expansion temperature controller which comprises a BMC base, a liquid temperature sensing element, a diaphragm capsule, a push rod device, a first end body, a second end body, a movable contact piece and a fine adjustment mechanism, wherein the first end body comprises a first terminal and a reed seat, and the first terminal and the reed seat are integrally formed; the first terminal and the reed seat integrated into one piece, second terminal and quiet contact integrated into one piece reduce part quantity, promote production efficiency, and two parts make up into a part and effectively reduce the resistance value moreover, reduce the calorific capacity when circular telegram to improve product quality, reduced the degree of automation degree of difficulty of former temperature controller simultaneously, can realize higher automated production degree, simple structure moreover, the cost is lower, stable performance is reliable.
Description
Technical Field
The utility model relates to a direct-push type liquid expansion 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.
The liquid expansion type temperature controller commonly used in the market mostly uses ceramics as a base, has larger size and higher cost, and the base adopts ceramics, so that the problems of large size consistency difference, crushing, deformation and the like of the ceramics often occur in the production process, thereby not meeting the requirement of automatic production and having high loss rate.
Disclosure of utility model
The utility model aims to provide a low-cost direct-pushing type liquid expansion temperature controller.
The purpose of the utility model is realized in the following way:
The direct-push type liquid expansion temperature controller comprises a BMC base, a liquid temperature sensing element, a diaphragm capsule, a push rod device, a first end body, a second end body, a movable contact piece and a fine adjustment mechanism, wherein the first end body comprises a first terminal and a reed seat, and the first terminal and the reed seat are integrally formed;
The second terminal body comprises a second terminal and a static contact piece, and the second terminal and the static contact piece are integrally formed;
the first terminal body is arranged in the BMC base, the movable contact piece is arranged in the BMC base and connected with the reed seat, the first terminal extends out of the BMC base, and the movable contact piece is provided with a movable contact;
The second terminal body is arranged in the BMC base, a static contact is arranged at the position corresponding to the movable contact of the static contact, and the second terminal extends out of the BMC base;
The push rod device is arranged outside the BMC base, the lower end of the push rod device extends into the BMC base and is positioned above the movable contact, the diaphragm capsule is arranged outside and inside the BMC base and is positioned above the push rod device, the fine adjustment mechanism is arranged outside and is positioned above the diaphragm capsule, and the fine adjustment mechanism, the diaphragm capsule and the push rod device are connected;
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 first terminal and the reed seat integrated into one piece, second terminal and quiet contact integrated into one piece reduce part quantity, promote production efficiency, and two parts make up into a part and effectively reduce the resistance value moreover, reduce the calorific capacity when circular telegram to improve product quality, reduced the degree of automation degree of difficulty of former temperature controller simultaneously, can realize higher automated production degree, simple structure moreover, the cost is lower, stable performance is reliable.
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 direct-push type liquid expansion temperature controller.
The aim of the utility model can be also solved by adopting the following technical measures:
Further, the device comprises a housing, wherein the housing is provided with a window, the housing is seated on the BMC base and is fastened with the BMC base, and the push rod device and the bellows are arranged in the inner cavity of the housing. The cover shell is fastened with the BMC base, the cover shell protects the push rod device and the diaphragm capsule device, and the safety of the temperature controller is improved.
Further, the side wall of the housing 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 side wall of the housing is provided with a mounting claw facing under the opening of the housing.
Further, the housing side walls are stamped inwardly to form the mounting fingers. The side wall of the housing is stamped inwards to form the mounting claw, and meanwhile, the mounting claw is enabled to be firmer and not easy to deform during stamping due to the effect of a reinforcing rib.
Further, the BMC base is provided with a clamping opening corresponding to the position of the mounting claw, the BMC base is provided with a collision platform corresponding to the position of the clamping opening, the mounting claw is provided with a contact, the mounting claw penetrates through the clamping opening, the contact abuts against the collision platform, and the housing and the BMC base are clamped.
After the mounting claw passes through the clamping opening, the mounting claw is opened by riveting, so that the abutting contact is abutted against the corresponding abutting platform, the clamping of the housing and the BMC base is realized, and the housing and the BMC base are simple and firm to assemble.
Further, the BMC base is a BMC base with an open top, the BMC base is clamped at the open port of the BMC base, a socket is formed in the position, corresponding to the mounting claw, of the BMC base, and the mounting claw penetrates through the socket and stretches into the clamping port. By the aid of the surface cover, the BMC base is sealed, loose or displacement of movable contact pieces in the BMC base is avoided, and reliability of the direct-pushing type liquid expansion temperature controller is greatly improved.
Further, the window protection device also comprises a dust cover, wherein the dust cover is arranged in the housing, and the dust cover shields the window. The dustproof cover is used for filling the windowing part of the housing, preventing the inner parts of the housing from ash entering and protecting the inner parts, and greatly prolonging the service life of the direct-push type liquid expansion temperature controller.
Further, the push rod device comprises a push rod and a spring, wherein a flanging is arranged at the position, close to the upper end, of the push rod, an inserting port is formed in the upper end of the push rod, the push rod is arranged in the housing, the lower end of the push rod penetrates through the face cover and is located above the movable contact piece, a bulge is arranged at the bottom of the bellows, the bulge is inserted into the inserting port and is filled with glue, the spring is sleeved on the push rod, the upper end of the spring abuts against the flanging, and the lower end of the spring abuts against the face cover.
The bulge of the diaphragm capsule is adhered to the push rod through glue, the diaphragm capsule is tightly connected with the push rod, and the spring applies pressure to the push rod when in compression, so that the diaphragm capsule is tightly pressed with the push rod.
Further, the first terminal body and the second terminal body are fixed on the BMC base through rivets, the liquid temperature sensing element comprises a temperature sensing barrel, a capillary tube and a sheath tube, 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:
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 number of parts is reduced, the production efficiency is improved, and the two parts are combined into one part, so that the resistance value is effectively reduced, the heating value during electrifying is reduced, the product quality is improved, the automation difficulty of the original temperature controller is reduced, the higher automatic production degree can be realized, the structure is simple, the cost is lower, and the performance is stable and reliable.
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 dimensional accuracy, fire resistance, high hardness, extremely small high-temperature deformation and low price, and the manufacturing cost of the direct-push type liquid expansion temperature controller is greatly reduced.
According to the utility model, after the mounting claw passes through the clamping opening, the mounting claw is opened by riveting, so that the abutting contact is abutted against the corresponding abutting platform, the clamping of the housing and the BMC base is realized, the assembly of the housing and the BMC base is simple and firm, the mounting claw is formed by inwards punching the side wall of the housing, and meanwhile, the effect of a reinforcing rib is formed, so that the mounting claw is firmer and less prone to deformation during punching.
The dustproof cover is used for filling the windowing part of the cover shell, preventing dust from entering the inner parts of the cover shell and protecting the inner parts, and greatly prolonging the service life of the direct-push type liquid expansion temperature controller.
According to the utility model, the protrusions of the diaphragm capsule are bonded with the push rod through glue, the diaphragm capsule is tightly connected with the push rod, and the spring applies pressure to the push rod during compression, so that the diaphragm capsule is tightly pressed with the push rod.
Drawings
Fig. 1 is a schematic view of a direct-push type liquid expansion thermostat.
Fig. 2 is another angular schematic view of the direct-push type liquid expansion thermostat.
FIG. 3 is another angular schematic view of a direct push hydraulic expansion thermostat.
Fig. 4 is a top view of the direct push type liquid expansion thermostat.
Fig. 5 is a cross-sectional view A-A of fig. 4.
Fig. 6 is a B-B cross-sectional view of fig. 4.
Fig. 7 is a C-C cross-sectional view of fig. 4.
Fig. 8 is a schematic view of a direct push type liquid expansion thermostat (excluding a housing).
Fig. 9 is an exploded view of the direct push type liquid expansion thermostat.
Fig. 10 is another angular exploded view of the direct push type liquid expansion thermostat.
FIG. 11 is an assembly view of a housing, a cover and a BMC base of a direct push type liquid expansion thermostat.
Detailed Description
The utility model is further described below with reference to the accompanying drawings and examples:
The embodiment, as shown in fig. 1 to 11, is a direct push type liquid expansion temperature controller, which comprises a BMC base 1, a liquid temperature sensing element 2, a bellows 3, a push rod device 4, a first terminal body 5, a second terminal body 6, a movable contact piece 7 and a fine adjustment mechanism 8, wherein the first terminal body 5 comprises a first terminal 51 and a reed seat 52, and the first terminal 51 and the reed seat 52 are integrally formed;
The second terminal body 6 comprises a second terminal 61 and a static contact piece 62, and the second terminal 61 and the static contact piece 62 are integrally formed;
The first terminal body 5 is arranged in the BMC base 1, the movable contact piece 7 is arranged in the BMC base 1 and connected with the reed seat 52, the first terminal 51 extends out of the BMC base 1, and the movable contact piece 7 is provided with a movable contact 71;
The second terminal body 6 is arranged in the BMC base 1, the static contact 621 is arranged at the position of the static contact 62 corresponding to the movable contact 71, and the second terminal 61 extends out of the BMC base 1;
The push rod device 4 is arranged outside the BMC base 1, the lower end of the push rod device 4 stretches into the BMC base 1 and is positioned above the movable contact piece 7, the membrane box 3 is arranged outside the BMC base 1 and is positioned above the push rod device 4, the fine adjustment mechanism 8 is arranged outside the BMC base 1 and is positioned above the membrane box 3, and the fine adjustment mechanism 8, the membrane box 3 and the push rod device 4 are connected;
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 7 is separated from the static contact piece 62, and when the diaphragm capsule 3 contracts, the push rod device 4 is pushed to return to the initial position, and the movable contact piece 7 is contacted with the static contact piece 62.
Further, the device also comprises a housing 9, wherein the housing 9 is provided with a window 91, the housing 9 is seated on the BMC base 1 and is fastened to the BMC base 1, and the push rod device 4 and the bellows 3 are arranged in the inner cavity of the housing 9.
Further, the side wall of the housing 9 is provided with a bent hook 92.
Further, the side wall of the housing 9 is provided with a mounting claw 93 facing under the opening of the housing 9.
Further, the housing 9 side wall is punched inwardly to form the mounting claws 93.
Further, a clamping opening 11 is formed in the position, corresponding to the mounting claw 93, of the BMC base 1, a supporting platform 12 is arranged in the position, corresponding to the clamping opening 11, of the BMC base 1, a supporting contact 931 is arranged on the mounting claw 93, the mounting claw 93 penetrates through the clamping opening 11, the supporting contact 931 abuts against the supporting platform 12, and the cover shell 9 and the BMC base 1 are clamped tightly.
Further, the BMC base 1 is a BMC base 1 with an open top, the BMC base 1 is provided with a face cover 10, the face cover 10 is clamped in the open top of the BMC base 1, the face cover 10 is provided with an insertion opening 412 corresponding to the position of the mounting claw 93, and the mounting claw 93 penetrates through the insertion opening 412 and stretches into the clamping opening 11.
Further, a dust cover 20 is further included, the dust cover 20 is disposed in the housing 9, and the dust cover 20 shields the window 91.
Further, the push rod device 4 includes a push rod 41 and a spring 42, the push rod 41 is provided with an outward flange 411 near the upper end position thereof, the upper end of the push rod 41 is provided with an insertion port 412, the push rod 41 is arranged in the housing 9, the lower end of the push rod 41 passes through the panel cover 10 and is positioned above the movable contact 7, the bottom of the bellows 3 is provided with a protrusion 31, the protrusion 31 is inserted into the insertion port 101 and is filled with glue, the spring 42 is sleeved on the push rod 41, the upper end of the spring 42 is abutted against the outward flange 411, the lower end of the spring 42 is abutted against the panel cover 10, and the elastic force of the spring 42 pushes the push rod 41 upwards.
Further, the first terminal body 5 and the second terminal body 6 are fixed on the BMC base 1 through rivets 30, the liquid temperature sensing element 2 comprises a temperature sensing barrel 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 barrel 21, the other end of the capillary tube 22 is communicated with the diaphragm capsule 3, the temperature sensing barrel 21 is located outside the BMC base 1, and the temperature sensing barrel 21 forms a temperature sensing part of the liquid temperature sensing element 2.
The bending hooks 92 clamp 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 41 device 4 to move, the push rod 41 applies pressure until the movable contact 7 deforms, and the movable contact 71 and the stationary contact 621 are separated, thereby achieving the purpose of power failure.
When the temperature of the controlled object drops, 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 bellows 3 communicated with the temperature sensing barrel 21 contracts, the bellows 3 contracts to drive the push rod 41 to withdraw, the movable contact 7 loses pressure, the movable contact 7 is restored to an initial state, and the movable contact 71 and the stationary contact 621 are combined again for electrifying.
Claims (10)
1. The utility model provides a formula temperature controller that rises of direct push type liquid, includes BMC base, liquid temperature sensing element, diaphragm capsule, push rod device, first terminal body, second terminal body, movable contact piece and fine setting mechanism, its characterized in that:
The first terminal body comprises a first terminal and a reed seat, and the first terminal and the reed seat are integrally formed;
The second terminal body comprises a second terminal and a static contact piece, and the second terminal and the static contact piece are integrally formed;
the first terminal body is arranged in the BMC base, the movable contact piece is arranged in the BMC base and connected with the reed seat, the first terminal extends out of the BMC base, and the movable contact piece is provided with a movable contact;
The second terminal body is arranged in the BMC base, a static contact is arranged at the position corresponding to the movable contact of the static contact, and the second terminal extends out of the BMC base;
The push rod device is arranged outside the BMC base, the lower end of the push rod device extends into the BMC base and is positioned above the movable contact, the diaphragm capsule is arranged outside and inside the BMC base and is positioned above the push rod device, the fine adjustment mechanism is arranged outside and is positioned above the diaphragm capsule, and the fine adjustment mechanism, the diaphragm capsule and the push rod device are connected;
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 direct push type liquid expansion temperature controller according to claim 1, wherein: the BMC box also comprises a cover shell, wherein the cover shell is provided with a window, the cover shell is seated on the BMC base and is fastened with the BMC base, and the push rod device and the diaphragm capsule are arranged in the inner cavity of the cover shell.
3. The direct push type liquid expansion temperature controller according to claim 2, wherein: the side wall of the housing is provided with a bending hook.
4. The direct push type liquid expansion temperature controller according to claim 2, wherein: the side wall of the housing is provided with a mounting claw facing towards the lower part of the opening of the housing.
5. The direct push type liquid expansion temperature controller according to claim 4, wherein: the side wall of the housing is stamped inwards to form the mounting claw.
6. The direct push type liquid expansion temperature controller according to claim 4, wherein: the BMC base is provided with a clamping opening corresponding to the position of the mounting claw, the BMC base is provided with a supporting platform corresponding to the position of the clamping opening, the mounting claw is provided with a supporting contact, the mounting claw penetrates through the clamping opening, the supporting contact supports against the supporting platform, and the housing and the BMC base are clamped tightly.
7. The direct push type liquid expansion temperature controller according to claim 6, wherein: the BMC base is an BMC base with an open top, the BMC base is clamped at an open port of the BMC base, a socket is formed in the position, corresponding to the mounting claw, of the BMC base, and the mounting claw penetrates through the socket and stretches into the clamping port.
8. The direct push type liquid expansion temperature controller according to claim 2, wherein: the dustproof window further comprises a dustproof cover, the dustproof cover is arranged in the housing, and the dustproof cover shields the window.
9. The direct push type liquid expansion temperature controller according to claim 7, wherein: the push rod device comprises a push rod and a spring, wherein an outward flanging is arranged at the position, close to the upper end, of the push rod, an insertion port is formed in the upper end of the push rod, the push rod is arranged in the housing, the lower end of the push rod penetrates through the face cover and is located above the movable contact piece, a bulge is arranged at the bottom of the membrane box, the bulge is inserted into the insertion port and is filled with glue, the spring is sleeved on the push rod, the upper end of the spring abuts against the outward flanging, and the lower end of the spring abuts against the face cover.
10. The direct push type liquid expansion temperature controller according to 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 membrane box, 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 |
|---|---|---|---|
| CN202323048952.4U CN220963141U (en) | 2023-11-11 | 2023-11-11 | Direct-pushing liquid-expansion temperature controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323048952.4U CN220963141U (en) | 2023-11-11 | 2023-11-11 | Direct-pushing liquid-expansion temperature controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220963141U true CN220963141U (en) | 2024-05-14 |
Family
ID=91004923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323048952.4U Active CN220963141U (en) | 2023-11-11 | 2023-11-11 | Direct-pushing liquid-expansion temperature controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220963141U (en) |
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2023
- 2023-11-11 CN CN202323048952.4U patent/CN220963141U/en active Active
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