CN114078658A - Adsorption type thermoelectric switch - Google Patents
Adsorption type thermoelectric switch Download PDFInfo
- Publication number
- CN114078658A CN114078658A CN202010831008.8A CN202010831008A CN114078658A CN 114078658 A CN114078658 A CN 114078658A CN 202010831008 A CN202010831008 A CN 202010831008A CN 114078658 A CN114078658 A CN 114078658A
- Authority
- CN
- China
- Prior art keywords
- flexible element
- flexible
- thermoelectric switch
- temperature
- thermal load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 38
- 239000003463 adsorbent Substances 0.000 claims abstract description 23
- 239000002156 adsorbate Substances 0.000 claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910021536 Zeolite Inorganic materials 0.000 claims description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 239000010457 zeolite Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims 3
- 230000000274 adsorptive effect Effects 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 abstract description 21
- 238000013021 overheating Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 238000005338 heat storage Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/36—Thermally-sensitive members actuated due to expansion or contraction of a fluid with or without vaporisation
- H01H37/38—Thermally-sensitive members actuated due to expansion or contraction of a fluid with or without vaporisation with bellows
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention provides an adsorption type thermoelectric switch, comprising: a fixed element, a moving element, a thermal load and a flexible element; the flexible element is filled with adsorbent and adsorbate, two ends of the flexible element are respectively connected with the movable element and the fixed element, the fixed element and the heat load are arranged at intervals, the movable element sequentially penetrates through the flexible element and the fixed element, and the movable element is separated from or contacted with the heat load along with the temperature of the flexible element. The adsorption type thermoelectric switch provided by the invention adopts the flexible element as the connecting piece, is respectively connected with the movable element and the fixed element, is filled with the adsorbent and the adsorbate, utilizes the relation between physical adsorption and temperature to adjust the volume of gas in the flexible element, so that the flexible element can stretch and retract to drive the movable element to be close to or far away from a thermal load, realizes the on-off of a current path, can realize the automatic control of a heating process, does not need additional manual operation, effectively improves the safety of a heating device controlled by the adsorption type thermoelectric switch, and avoids overheating faults.
Description
Technical Field
The invention relates to the technical field of heat flow path control, in particular to an adsorption type thermoelectric switch.
Background
The current energy structure is mainly based on traditional fossil energy, but the high-grade electric energy generated by burning the fossil energy has a certain instability in time or space dimension with respect to the supply and demand of a user terminal.
Therefore, energy storage technology has become an important means to solve the problem of discontinuous energy consumption at the user end and maintain the balance between supply and demand. The heat storage technology is mainly used in the fields of power system peak regulation, solar power generation, heating and the like. One of the common heat storage technologies is to use an electric heating method to heat up the heat storage material, store the heat, and release and use the heat when a specific user needs the heat at a specific time. The resistance heating technology has the hidden troubles of short circuit, overheating caused by overlong heating time, equipment damage and the like. In order to ensure the safety of the system, a thermoelectric switch is usually used or an additional PID temperature control system is added to monitor the temperature, and when the temperature is higher than a designed value, the current path is cut off, and the heating is stopped. When the temperature is lower than the design value, the current is conducted and heating is started. These are all the keys to ensure safe operation of the electrical heating apparatus.
At present, thermoelectric switches for controlling temperature based on-off control of current mainly have two types, namely a bimetallic strip type structure and a ferrite magnet type structure. However, these two structures are complicated and difficult to process, and among them, the ferrite magnet type structure cannot be automatically controlled, and the heating cannot be automatically started by pressing a key when the user uses the ceramic magnet type structure. In addition, the existing system is additionally provided with additional devices such as a thermometer, a signal receiver and the like, and the PID technology is used for temperature control adjustment, but the complexity of the system is increased.
Disclosure of Invention
The embodiment of the invention provides an adsorption type thermoelectric switch, which is used for simplifying the structure of the thermoelectric switch, realizing the automatic on/off heating process and ensuring the safe operation of a heating device.
An embodiment of the present invention provides an adsorption thermoelectric switch, including:
a fixed element, a moving element, a thermal load and a flexible element;
the flexible element is filled with adsorbent and adsorbate, the both ends of flexible element respectively with the removal component with fixed component connects, fixed component with the heat load interval sets up, the removal component passes in proper order the flexible element with the fixed component, the removal component is along with the temperature of flexible element with heat load separation or contact.
According to the adsorption type thermoelectric switch of one embodiment of the present invention, the moving element is separated from the thermal load when the temperature of the flexible element is higher than a preset value.
According to the adsorption type thermoelectric switch of one embodiment of the present invention, the adsorption amount of the adsorbent is inversely related to the temperature within a set temperature range, the adsorbent (typically gas) is desorbed at a high temperature and the gas volume is increased, and when the flexible member is expanded to a predetermined length or more, the movable member is separated from the thermal load.
According to the adsorption type thermoelectric switch of one embodiment of the present invention, when the flexible member is shrunk to less than the preset length at a low temperature, the moving member is in contact with the thermal load.
According to the adsorption type thermoelectric switch of one embodiment of the invention, a channel for the moving element to pass through is arranged in the flexible element; the contact end of the moving element is movably disposed between the fixed element and the thermal load.
According to an embodiment of the adsorption type thermoelectric switch of the present invention, the moving element includes: a first transverse structure, a second transverse structure and a longitudinal structure;
the first transverse structure is connected with the flexible element; the longitudinal structure is movably arranged in the channel and the fixed element, a first end of the longitudinal structure is connected with the first transverse structure, a second end of the longitudinal structure is connected with the second transverse structure, and the second transverse structure is in contact with the heat load when the temperature of the flexible element is lower than a preset value.
The embodiment of the invention also provides an adsorption type thermoelectric switch, wherein the fixing element is provided with a through hole matched with the longitudinal structure, the longitudinal structure is movably arranged in the through hole, and the longitudinal structure is always contacted with the side wall of the through hole.
According to the adsorption type thermoelectric switch of one embodiment of the present invention, the moving element and the thermal load are made of a heat conductive metal, and the fixing element is made of an insulating material.
According to the adsorption type thermoelectric switch of one embodiment of the present invention, the moving element and the thermal load are made of any one of gold, silver, or copper.
According to the adsorption type thermoelectric switch, the flexible element is a corrugated pipe, and the adsorbent is one or more of activated carbon and zeolite.
The adsorption type thermoelectric switch provided by the invention adopts the flexible element as the connecting piece, is respectively connected with the movable element and the fixed element, is filled with the adsorbent and the adsorbate, utilizes the relation between physical adsorption and temperature to adjust the volume of gas in the flexible element, so that the flexible element can stretch and retract to drive the movable element to be close to or far away from a thermal load, realizes the on-off of a current path, can realize the automatic control of a heating process, does not need additional manual operation, effectively improves the safety of a heating device controlled by the adsorption type thermoelectric switch, and avoids overheating faults.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating a communication state of an adsorption type thermoelectric switch provided in an embodiment of the present invention;
FIG. 2 is a schematic diagram of an off state of a sorption thermoelectric switch according to an embodiment of the present invention;
1. a moving element; 2. an adsorbent and an adsorbate; 3. a flexible element; 4. a fixing element; 5. a heat load.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A sorption type thermoelectric switch provided by an embodiment of the present invention will be described below with reference to fig. 1 and 2, the sorption type thermoelectric switch including: a fixed element 4, a moving element 1, a thermal load 5 and a flexible element 3.
The flexible element 3 is filled with the adsorbent and the adsorbate 2, two ends of the flexible element 3 are respectively connected with the movable element 1 and the fixed element 4, the fixed element 4 is arranged at a distance from the heat load 5, the movable element 1 sequentially penetrates through the flexible element 3 and the fixed element 4, and the movable element 1 is separated from or contacts the heat load 5 along with the temperature of the flexible element 3.
In this embodiment, when the temperature of the flexible element 3 is lower than the preset value, the moving element 1 contacts the thermal load 5, and the thermoelectric switch is in a connected state as shown in fig. 1. The moving element 1 is detached from the thermal load 5 when the temperature of the flexible element 3 is higher than a preset value.
In the closed state of the adsorption thermoelectric switch provided in this embodiment, as shown in fig. 1, when the switch is in the on state, the moving element 1 is in contact with the thermal load 5, the circuit is turned on, and the heating device starts heating. As shown in fig. 2, when the temperature of the moving element 1 is higher than the designed value, heat is transferred to the flexible element 3 through the moving element 1, the temperature of the adsorbent and the adsorbate 2 filled inside the flexible element 3 increases, the adsorption amount of the adsorbate (adsorbate is generally gas) to the adsorbate decreases at high temperature, part of the adsorbate is desorbed, the gas heats up and expands, the length of the flexible element 3 increases, the moving element 1 is pushed away from the heat load 5, the current path is cut off, and heating stops. When the temperature of the movable element 1 is lower than a set value, the temperature of the flexible element 3 in thermal contact with the movable element is lower, the flexible element 3 begins to contract, the length is reduced, one end of the flexible element 3 is connected with the fixed element 4 and cannot move, the flexible element 3 pushes the movable element 1 to be in contact with the thermal load 5, the current path is conducted, the heating device is started, the thermal load 5 is heated again, heat is transferred to the movable element 1, the movable element 1 is heated to the set value, the heat is transferred to the flexible element 3 again through the movable element 1, the flexible element 3 is heated and expanded again, and therefore automatic opening and closing can be achieved according to the characteristics of the adsorbent and the adsorbate 2 in the flexible element 3 without external manual detection and operation.
The adsorption type thermoelectric switch provided by the invention adopts the flexible element as the connecting piece, is respectively connected with the movable element and the fixed element, is filled with the adsorbent and the adsorbate, utilizes the relation between physical adsorption and temperature to adjust the volume of gas in the flexible element, so that the flexible element can stretch and retract to drive the movable element to be close to or far away from a thermal load, realizes the on-off of a current path, can realize the automatic control of a heating process, does not need additional manual operation, effectively improves the safety of a heating device controlled by the adsorption type thermoelectric switch, and avoids overheating faults.
Based on the above embodiments, the present invention further provides an embodiment, as shown in fig. 1 and fig. 2, the flexible element 3 is a corrugated pipe made of a material with good thermal conductivity, the adsorbent inside can be selected from a combination of activated carbon, zeolite, etc., and the particle size and filling manner of the adsorbent are adjusted according to actual conditions. The adsorbate is selected from safe, non-explosive and non-toxic gas. The volume in the corrugated pipe is changed according to the specific volume change of the adsorbate at different temperatures and the different adsorption quantity of the adsorbent to gas at different temperatures.
Generally, the adsorption amount of the adsorbent is inversely related to the temperature in a set temperature range, and when the flexible element 3 expands to a predetermined length or more at a high temperature, the movable element 1 is separated from the heat load 5. When the flexible element 3 shrinks to less than the preset length at low temperature, the moving element 1 is in contact with the heat load 5.
In addition, metal powder can be added into the adsorbent inside the corrugated pipe, so that the heat transfer characteristic of the adsorbent is enhanced.
Correspondingly, the heat load 5 and the moving element 1 are made of metal materials with good thermal conductivity, such as gold, silver, copper (red copper) and other metal materials.
In this embodiment, the flexible element 3 is provided with a passage through which the moving element 1 passes. The flexible element 3 is movable in the passage and the contact end of the moving element 1 is movably arranged between the fixed element 4 and said heat load 5.
In order to ensure the reliability and sensitivity of the switch, the fixing element 4 is made of an insulating material with poor heat-conducting property. The flexible element 3 is located between the moving element 1 and the fixed element 4, so that the flexible element 3 is prevented from directly contacting with other external structures to transfer heat.
Wherein the moving element 1 comprises: a first transverse structure, a second transverse structure and a longitudinal structure. The first transverse structure is connected to the flexible element 3. A longitudinal structure is movably arranged in the passage and the fixed element 4, a first end of the longitudinal structure being connected to the first transverse structure, a second end of the longitudinal structure being connected to the second transverse structure, and the second transverse structure being in contact with the thermal load 5 when the temperature of the flexible element 3 is below a preset value.
Correspondingly, the fixing element 4 is provided with a through-hole adapted to the longitudinal structure, which is movably arranged in the through-hole. Throughout the contraction and expansion of the flexible element 3, the longitudinal structures are always in contact with the side walls of the through hole.
In summary, the adsorption-type thermoelectric switch provided in the embodiments of the present invention uses the flexible element as the connecting member, and is respectively connected to the moving element and the fixed element, the interior of the flexible element is filled with the adsorbent and the adsorbate, and the volume of the gas in the flexible element is adjusted by utilizing the relationship between physical adsorption and temperature, so that the flexible element stretches and retracts to drive the moving element to approach/move away from the thermal load, thereby realizing the on/off of the current path, realizing the automatic control of the heating process, avoiding additional manual operation, effectively improving the safety of the heating device controlled by the flexible element, and avoiding the overheating fault.
In addition, the adsorption type thermoelectric switch is different from the prior art, only comprises a fixed element, a moving element, a heat load, a flexible element and an adsorbent and adsorbate filled in the flexible element, and has a simple and reliable structure.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An adsorption-type thermoelectric switch, comprising:
a fixed element, a moving element, a thermal load and a flexible element;
the flexible element is filled with adsorbent and adsorbate, the both ends of flexible element respectively with the removal component with fixed component connects, fixed component with the heat load interval sets up, the removal component passes in proper order the flexible element with the fixed component, the removal component is along with the temperature of flexible element with heat load separation or contact.
2. The sorption thermoelectric switch of claim 1, wherein the moving element is decoupled from the thermal load when the temperature of the flexible element is above a preset value.
3. The absorption thermoelectric switch according to claim 1, wherein an absorption amount of the adsorbent is inversely related to a temperature in a predetermined temperature range, the adsorbate is desorbed at a high temperature and a gas volume is increased, and the moving member is separated from the thermal load when the flexible member is expanded to a predetermined length or more.
4. The absorbed thermoelectric switch of claim 3, wherein the moving element is in contact with the thermal load when the flexible element cryogenically contracts to less than a predetermined length.
5. The adsorptive thermoelectric switch according to any one of claims 1 to 4, wherein said flexible member has a passage therein through which said moving member passes; the contact end of the moving element is movably disposed between the fixed element and the thermal load.
6. The absorbed thermoelectric switch of claim 5, wherein the moving element comprises: a first transverse structure, a second transverse structure and a longitudinal structure;
the first transverse structure is connected with the flexible element; the longitudinal structure is movably arranged in the channel and the fixed element, a first end of the longitudinal structure is connected with the first transverse structure, a second end of the longitudinal structure is connected with the second transverse structure, and the second transverse structure is in contact with the heat load when the temperature of the flexible element is lower than a preset value.
7. The absorption thermoelectric switch according to claim 6, wherein said fixing member has a through hole adapted to said longitudinal structure, said longitudinal structure is movably disposed in said through hole, and said longitudinal structure is always in contact with a sidewall of said through hole.
8. The sorption thermoelectric switch of claim 1, wherein the moving element and the thermal load are made of a thermally conductive metal and the stationary element is made of an insulating material.
9. The sorption thermoelectric switch of claim 8, wherein the moving element and the thermal load are made of any of gold, silver, or copper.
10. The adsorptive thermoelectric switch according to claim 1, wherein said flexible member is a bellows and said adsorbent is a combination of one or more of activated carbon and zeolite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010831008.8A CN114078658A (en) | 2020-08-18 | 2020-08-18 | Adsorption type thermoelectric switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010831008.8A CN114078658A (en) | 2020-08-18 | 2020-08-18 | Adsorption type thermoelectric switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114078658A true CN114078658A (en) | 2022-02-22 |
Family
ID=80281359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010831008.8A Pending CN114078658A (en) | 2020-08-18 | 2020-08-18 | Adsorption type thermoelectric switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114078658A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100065263A1 (en) * | 2006-03-30 | 2010-03-18 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Thermal Switch |
| CN102288065A (en) * | 2010-06-17 | 2011-12-21 | 中国科学院理化技术研究所 | Thermal switch and measuring device using the same |
| US20120234526A1 (en) * | 2011-03-17 | 2012-09-20 | The Aerospace Corporation | Methods and systems for solid state heat transfer |
| CN106183382A (en) * | 2016-07-10 | 2016-12-07 | 复旦大学 | A kind of based on can the film transfer equipment of thermal degradation flexibility seal and method |
| CN212907552U (en) * | 2020-08-18 | 2021-04-06 | 中国科学院理化技术研究所 | Adsorption type thermoelectric switch |
-
2020
- 2020-08-18 CN CN202010831008.8A patent/CN114078658A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100065263A1 (en) * | 2006-03-30 | 2010-03-18 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Thermal Switch |
| CN102288065A (en) * | 2010-06-17 | 2011-12-21 | 中国科学院理化技术研究所 | Thermal switch and measuring device using the same |
| US20120234526A1 (en) * | 2011-03-17 | 2012-09-20 | The Aerospace Corporation | Methods and systems for solid state heat transfer |
| CN106183382A (en) * | 2016-07-10 | 2016-12-07 | 复旦大学 | A kind of based on can the film transfer equipment of thermal degradation flexibility seal and method |
| CN212907552U (en) * | 2020-08-18 | 2021-04-06 | 中国科学院理化技术研究所 | Adsorption type thermoelectric switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016192052A1 (en) | Battery assembly, temperature control method for battery assembly and vehicle thereof | |
| CN109994347B (en) | Short-circuit-proof recoverable fuse | |
| CN113593863B (en) | Intelligent dry-type distribution transformer | |
| CN212907552U (en) | Adsorption type thermoelectric switch | |
| CN212659488U (en) | Thermoelectric switch based on negative thermal expansion | |
| CN114078658A (en) | Adsorption type thermoelectric switch | |
| CN110071020A (en) | A kind of current overload auto-cutout protector | |
| CN103985598A (en) | Two-path output manual outage reset temperature controlled switch | |
| CN111854213A (en) | Air gap type thermal switch | |
| US3356808A (en) | Circuit-interrupting devices having pressure-operated contacts | |
| US3243554A (en) | Combination motor protector and start relay | |
| CN212695078U (en) | Thermal expansion type thermoelectric switch | |
| CN203536316U (en) | Thermal relay | |
| CN201011649Y (en) | Three-phase compressor built-in protector | |
| CN214704442U (en) | Temperature control device based on semiconductor | |
| CN114078659A (en) | Thermal expansion type thermoelectric switch | |
| CN203839282U (en) | Two output type manual power interruption reset temperature controlled switch | |
| CN112947622A (en) | Temperature control device based on semiconductor | |
| CN212657903U (en) | Air gap type thermal switch | |
| CN203522588U (en) | Positive temperature coefficient thermistor starter | |
| CN2038284U (en) | Auto-jump type plug of power supply when overheated | |
| CN100573774C (en) | Selective protection switch | |
| RU2137260C1 (en) | Fast-heater thermoelectric refrigerator for chromatograph | |
| CN114078660A (en) | Negative thermal expansion type thermoelectric switch | |
| CN110112714A (en) | A kind of current overload auto-cutout guard method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |