CN107196562B - Starter, three-phase asynchronous motor and compressor - Google Patents
Starter, three-phase asynchronous motor and compressor Download PDFInfo
- Publication number
- CN107196562B CN107196562B CN201710533347.6A CN201710533347A CN107196562B CN 107196562 B CN107196562 B CN 107196562B CN 201710533347 A CN201710533347 A CN 201710533347A CN 107196562 B CN107196562 B CN 107196562B
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- switch
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- starter
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
-
- 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
- H01H37/46—Thermally-sensitive members actuated due to expansion or contraction of a solid
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Motor And Converter Starters (AREA)
Abstract
The invention provides a starter, a three-phase asynchronous motor and a compressor. The starter includes: the positioning part is provided with an installation cavity; the temperature sensing deformation sheet is arranged in the mounting cavity; the first switch and the second switch are both installed on the locating part, when the temperature-sensing deformation sheet is in a cold state, the first switch is closed and the second switch is opened, and when the temperature-sensing deformation sheet is heated to deform, the temperature-sensing deformation sheet deforms to enable the second switch to be closed and the first switch to be opened. By the action of the starter, the compressor can realize single-phase starting and three-phase operation, the problem of overlarge stress strain of a pipeline in the starting process of the compressor is solved, the shaking of the compressor in starting is reduced, the cost is low, and the market competitiveness of the compressor is improved conveniently.
Description
Technical Field
The invention relates to the technical field of compression devices, in particular to a starter, a three-phase asynchronous motor and a compressor.
Background
The existing three-phase fixed-frequency compressor adopts a three-phase asynchronous motor, and a direct starting mode is generally adopted, and the starting in the mode can generate strong starting torque impact at the moment of starting due to the self structure of the three-phase asynchronous motor, so that the compressor generates strong shaking during starting, and pipeline vibration exceeds standard.
At present, some existing starting switching circuits are in a voltage type starting mode, the starting switching time is too fast, the buffering effect cannot be achieved, and meanwhile, the voltage detection element is arranged in the voltage type starting circuit, so that the cost is increased, and the product competitiveness is weakened.
Disclosure of Invention
The invention mainly aims to provide a starter, a three-phase asynchronous motor and a compressor, so as to solve the problem of severe shaking when the compressor in the prior art is started.
In order to achieve the above object, according to one aspect of the present invention, there is provided a starter comprising: the positioning part is provided with an installation cavity; the temperature sensing deformation sheet is arranged in the mounting cavity; the first switch and the second switch are both installed on the locating part, when the temperature-sensing deformation sheet is in a cold state, the first switch is closed and the second switch is opened, and when the temperature-sensing deformation sheet is heated to deform, the temperature-sensing deformation sheet deforms to enable the second switch to be closed and the first switch to be opened.
Further, the temperature-sensing deformation sheet is a metal sheet.
Further, the temperature-sensitive deformation sheet comprises a first metal layer and a second metal layer formed on the first metal layer in a pressing mode, and the expansion coefficient of the first metal layer is smaller than that of the second metal layer.
Further, the first switch comprises a first wiring end and a second wiring end, the first wiring end and the second wiring end are all arranged on the positioning part in a penetrating mode, first ends of the first wiring end and the second wiring end are all located in the mounting cavity, second ends of the first wiring end and the second wiring end are all extended out of the positioning part, and first ends of the first wiring end and the second wiring end are all located on the first side of the temperature sensing deformation sheet.
Further, the second switch comprises a third wiring terminal and a fourth wiring terminal, the third wiring terminal and the fourth wiring terminal are all arranged on the positioning part in a penetrating mode, first ends of the third wiring terminal and the fourth wiring terminal are all located in the mounting cavity, second ends of the third wiring terminal and the fourth wiring terminal are all extended out of the positioning part, and first ends of the third wiring terminal and the fourth wiring terminal are all located on a second side, opposite to the first side, of the temperature sensing deformation piece.
Further, the first side and the second side of the temperature sensing deformation sheet are respectively provided with two conductive contacts, the two conductive contacts are connected through wires, and the first wiring end, the second wiring end, the third wiring end and the fourth wiring end are respectively provided with a contact part corresponding to the conductive contacts.
Further, an insulating plate is arranged on the temperature sensing deformation sheet, and the conductive contact is arranged on the insulating plate.
Further, the starter also comprises a heating wiring part, and the heating wiring part is connected with the temperature sensing deformation sheet.
Further, the heating wiring portion comprises a first conductive end and a second conductive end, the first conductive end and the second conductive end are fixedly connected with the temperature sensing deformation sheet, and the second ends of the first conductive end and the second conductive end extend out of the positioning portion.
Further, the positioning portion is an insulating portion.
According to another aspect of the invention, a three-phase asynchronous motor is provided, comprising a starter, which is the starter described above.
Further, a first switch of the starter is connected between any two-phase power supplies of the three-phase asynchronous motor through a wire, a second switch of the starter is connected between a first wiring terminal of the first switch and a first power supply of the three-phase asynchronous motor through a wire, and a heating wiring part of the starter is connected between a second wiring terminal of the first switch and a second power supply of the three-phase asynchronous motor through a wire.
According to still another aspect of the present invention, there is provided a compressor including a three-phase asynchronous motor, which is the above-mentioned three-phase asynchronous motor.
By applying the technical scheme of the invention, the starter is connected between any two-phase power supplies for starting the three-phase asynchronous motor by the compressor. When the total power supply of the compressor is started, the temperature sensing deformation sheet is in a cold state, the first switch is closed, the second switch is opened, at the moment, the three-phase asynchronous motor is started in a single phase, after the temperature sensing deformation sheet is heated to deform, the first switch is disconnected, the second switch is closed, and at the moment, the three-phase asynchronous motor is switched to a three-phase working state. Therefore, by the action of the starter, the single-phase starting and three-phase running of the compressor can be realized, the problem of overlarge stress strain of a pipeline in the starting process of the compressor is solved, the shaking of the compressor in starting is reduced, the cost is low, and the market competitiveness of the compressor is conveniently improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
Fig. 1 schematically shows a perspective view of the starter of the present invention with the positioning portion removed; and
Fig. 2 shows schematically a circuit diagram of the starter according to the invention when connected to a three-phase asynchronous motor.
Wherein the above figures include the following reference numerals:
10. A temperature-sensing deformation sheet; 20. a first switch; 21. a first terminal; 22. a second terminal; 30. a second switch; 31. a third terminal; 32. a fourth terminal; 50. heating the wiring part; 51. a first conductive terminal; 52. a second conductive terminal; 60. a conductive contact; 70. a contact portion; 40. an insulating plate.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be capable of being practiced otherwise than as specifically illustrated and described. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Referring to fig. 1, according to an embodiment of the present invention, there is provided a starter including a positioning portion (not shown in the drawings), a temperature-sensitive deformation sheet 10, a first switch 20, and a second switch 30.
Wherein, the positioning part is provided with an installation cavity; the temperature sensing deformation sheet 10 is arranged in the mounting cavity; the first switch 20 and the second switch 30 are both mounted on the positioning portion. When the temperature-sensing deformation sheet 10 is in a cold state, the first switch 20 is closed and the second switch 30 is opened, and when the temperature-sensing deformation sheet 10 is deformed by heating, the temperature-sensing deformation sheet 10 is deformed so that the second switch 30 is closed and the first switch 20 is opened.
In the process of using the starter, the starter is connected between any two-phase power sources for starting the three-phase asynchronous motor by the compressor, as shown in fig. 2. When the total power supply of the compressor is started, the temperature sensing deformation sheet 10 is in a cold state, the first switch 20 is closed, the second switch 30 is opened, at the moment, the three-phase asynchronous motor is started in a single phase, after the temperature sensing deformation sheet 10 is heated and deformed, the first switch 20 is opened, the second switch 30 is closed, and at the moment, the three-phase asynchronous motor is switched to a three-phase working state. Therefore, through the action of the starter in the embodiment, the single-phase starting and three-phase running of the compressor can be realized, the problem that the stress strain of a pipeline is overlarge in the starting process of the compressor is solved, the shaking of the compressor in starting is reduced, the cost is low, and the market competitiveness of the compressor is convenient to improve.
The temperature-sensing deformable sheet 10 in the present embodiment is a metal sheet, however, in other embodiments of the present invention, the temperature-sensing deformable sheet 10 may be configured in other deformable structures, and any other deformation modes within the scope of the present invention are within the scope of the present invention.
In the process of producing the temperature-sensing deformable sheet 10 of this embodiment, the first metal layer and the second metal layer are pressed together, and the temperature-sensing deformable sheet 10 is in a state of being bent upwards in a natural state, that is, in the above-mentioned cold state, when the first switch 20 is closed and the second switch 30 is opened, so that unidirectional starting of the three-phase asynchronous motor is facilitated. When the temperature of the temperature-sensing deformation sheet 10 rises, the expansion coefficient of the first metal layer is smaller than that of the second metal layer, at this time, the expansion of the second metal layer positioned on the upper layer is larger than that of the first metal layer positioned on the lower layer, the temperature-sensing deformation sheet 10 generates downward stress, and when the expansion stress of the temperature-sensing deformation sheet 10 is larger than that of the temperature-sensing deformation sheet 10, the shape of the temperature-sensing deformation sheet 10 is suddenly changed into downward bending, so that the first switch 20 is turned off, the second switch 30 is turned off, and the unidirectional starting and the three-phase operation of the three-phase asynchronous motor are realized.
Specifically, the first switch 20 in this embodiment includes a first terminal 21 and a second terminal 22, the first terminal 21 and the second terminal 22 are all disposed on the positioning portion in a penetrating manner, first ends of the first terminal 21 and the second terminal 22 are all located in the mounting cavity, second ends of the first terminal 21 and the second terminal 22 are all extended out of the positioning portion so as to be connected to an external circuit, and first ends of the first terminal 21 and the second terminal 22 are all located on the first side of the temperature-sensing deformation sheet 10.
The second switch 30 includes a third terminal 31 and a fourth terminal 32, the third terminal 31 and the fourth terminal 32 are all arranged on the positioning portion in a penetrating manner, first ends of the third terminal 31 and the fourth terminal 32 are all located in the mounting cavity, second ends of the third terminal 31 and the fourth terminal 32 are all extended out of the positioning portion and are convenient to be connected with an external circuit, and first ends of the third terminal 31 and the fourth terminal 32 are all located on a second side, opposite to the first side, of the temperature-sensing deformation sheet 10.
The first switch 20 and the second switch 30 in this embodiment are respectively disposed on opposite sides of the temperature-sensitive deformable pad 10, and in a cold state, the temperature-sensitive deformable pad 10 is bent upward such that the first switch 20 is turned off, the second switch 30 is turned on, and when the temperature of the temperature-sensitive deformable pad 10 increases, the deformation of the temperature-sensitive deformable pad 10 is bent downward, the second switch 30 is turned off, and the first switch 20 is turned on.
The first side and the second side of the temperature sensing deformation sheet 10 in this embodiment are respectively provided with two conductive contacts 60, the two conductive contacts 60 are connected by wires, and the first terminal 21, the second terminal 22, the third terminal 31 and the fourth terminal 32 are respectively provided with a contact portion 70 corresponding to the conductive contacts 60, and the contact portions 70 may be through holes, blind holes or the like.
In order to ensure the stability of the starter in this embodiment, the temperature-sensitive deformation sheet 10 in this embodiment is provided with an insulating plate 40, and the conductive contact 60 is provided on the insulating plate 40.
The starter further includes a heating wire connection part 50, and the heating wire connection part 50 is connected to the temperature-sensing deformation sheet 10, so that when the heating wire connection part 50 is connected to a circuit, the temperature-sensing deformation sheet 10 is heated, and the temperature-sensing deformation sheet 10 is deformed to open or close the first switch 20 and the second switch 30.
Specifically, the heating connection portion 50 includes a first conductive end 51 and a second conductive end 52, the first conductive end 51 and the second conductive end 52 are fixedly connected with the temperature sensing deformation sheet 10, and the second ends of the first conductive end 51 and the second conductive end 52 extend out of the positioning portion. Because the temperature-sensing deformation sheet 10 has a resistor, the ohmic effect of current causes the temperature-sensing deformation sheet 10 to generate heat, at the moment, because the expansion coefficient of the second metal layer in the temperature-sensing deformation sheet 10 is higher than that of the first metal layer, a downward pressure is formed in the temperature-sensing deformation sheet 10, when the downward pressure is higher than the internal stress, the temperature-sensing deformation sheet 10 which is bent upwards originally is suddenly bent downwards, the first switch 20 is opened, the second switch 30 is closed, and the compressor is switched to a three-phase asynchronous motor mode for operation.
Preferably, the positioning portion in this embodiment is an insulating portion, and has a simple structure, safety and reliability, and in the actual design process, the insulating portion may be set to a cuboid, a cube, a cylinder, or the like.
According to another aspect of the present invention, there is provided a three-phase asynchronous motor, which in this embodiment includes a starter, which is the starter described above.
When the three-phase asynchronous motor is connected, the first switch 20 of the starter is connected between any two-phase power supplies of the three-phase asynchronous motor through a wire, the second switch 30 of the starter is connected between the first wiring end 21 of the first switch 20 and the first power supply of the three-phase asynchronous motor through a wire, the heating wiring part 50 of the starter is connected between the second wiring end 22 of the first switch 20 and the second power supply of the three-phase asynchronous motor through a wire, as shown in fig. 2, when the total power supply of the compressor is started, the temperature sensing deformation sheet 10 is in a cold state, the first switch 20 is closed, the second switch 30 is opened, at the moment, the three-phase asynchronous motor is started in a single phase mode, after the temperature sensing deformation sheet 10 is heated and deformed, the first switch 20 is opened, the second switch 30 is closed, and at the moment, the three-phase asynchronous motor is switched to a three-phase working state. Therefore, through the action of the starter in the embodiment, the single-phase starting and three-phase running of the compressor can be realized, the problem that the stress strain of a pipeline is overlarge in the starting process of the compressor is solved, the shaking of the compressor in starting is reduced, the cost is low, and the market competitiveness of the compressor is convenient to improve.
According to still another aspect of the present invention, there is provided a compressor including a three-phase asynchronous motor, which is the three-phase asynchronous motor in the above-described embodiment.
From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: the starter, the three-phase asynchronous motor and the compressor realize single-phase starting three-phase operation of the three-phase compressor, and solve the problem of overlarge pipeline stress strain in the starting process of the three-phase compressor. Meanwhile, the invention utilizes the shape change of the temperature sensing deformation sheet after the current of the electrified phase heats, realizes two steps of cutting off the capacitor and switching on the third phase power supply, solves the problem of overlarge direct starting torque impact by using the least components, and reduces the system cost. The starter and the three-phase asynchronous motor can be applied to compressors with severe exceeding of starting stress strain of the three-phase compressors, and can prevent fatigue fracture of air conditioner pipelines.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A starter, comprising:
the positioning part is provided with an installation cavity;
A temperature-sensing deformation sheet (10), wherein the temperature-sensing deformation sheet (10) is arranged in the mounting cavity;
The temperature-sensing deformation device comprises a first switch (20) and a second switch (30), wherein the first switch (20) and the second switch (30) are both installed on the positioning part, when the temperature-sensing deformation sheet (10) is in a cold state, the first switch (20) is closed and the second switch (30) is opened, and when the temperature-sensing deformation sheet (10) is heated and deformed, the temperature-sensing deformation sheet (10) is deformed so that the second switch (30) is closed and the first switch (20) is opened;
The positioning part is an insulating part;
The first side and the second side of the temperature sensing deformation sheet (10) are respectively provided with two conductive contacts (60), and the two conductive contacts (60) are connected through a wire; an insulating plate (40) is arranged on the temperature sensing deformation sheet (10), and the conductive contact (60) is arranged on the insulating plate (40);
The first switch (20) comprises a first wiring terminal (21) and a second wiring terminal (22), the first wiring terminal (21) and the second wiring terminal (22) are all arranged on the positioning part in a penetrating mode, first ends of the first wiring terminal (21) and the second wiring terminal (22) are all located in the mounting cavity, second ends of the first wiring terminal (21) and the second wiring terminal (22) are all extended out of the positioning part, and first ends of the first wiring terminal (21) and the second wiring terminal (22) are all located on the first side of the temperature-sensing deformation sheet (10);
The second switch (30) comprises a third wiring terminal (31) and a fourth wiring terminal (32), the third wiring terminal (31) and the fourth wiring terminal (32) are all arranged on the positioning part in a penetrating mode, first ends of the third wiring terminal (31) and the fourth wiring terminal (32) are all located in the mounting cavity, second ends of the third wiring terminal (31) and the fourth wiring terminal (32) are all extended out of the positioning part, and first ends of the third wiring terminal (31) and the fourth wiring terminal (32) are all located on a second side, opposite to the first side, of the temperature sensing deformation sheet (10);
The first terminal (21), the second terminal (22), the third terminal (31) and the fourth terminal (32) are respectively provided with a contact part (70) corresponding to the conductive contact (60).
2. Starter according to claim 1, characterized in that the temperature-sensitive deformable sheet (10) is a metal sheet.
3. Starter according to claim 1, characterized in that the temperature-sensitive deformable sheet (10) comprises a first metal layer and a second metal layer pressed onto the first metal layer, the expansion coefficient of the first metal layer being smaller than the expansion coefficient of the second metal layer.
4. The starter according to claim 1, further comprising a heating connection (50), the heating connection (50) being connected to the temperature-sensitive deformable sheet (10).
5. The starter according to claim 4, wherein the heating wire connection portion (50) includes a first conductive end (51) and a second conductive end (52), the first conductive end (51) and the second conductive end (52) are fixedly connected with the temperature sensing deformation sheet (10), and the second ends of the first conductive end (51) and the second conductive end (52) are protruded outside the positioning portion.
6. A three-phase asynchronous motor comprising a starter as claimed in any one of claims 1 to 5.
7. The three-phase asynchronous motor according to claim 6, characterized in that the first switch (20) of the starter is connected between any two-phase power supply of the three-phase asynchronous motor by means of a wire, the second switch (30) of the starter is connected between the first terminal (21) of the first switch (20) and the first energizing power supply of the three-phase asynchronous motor by means of a wire, and the heating connection (50) of the starter is connected between the second terminal (22) of the first switch (20) and the second energizing power supply of the three-phase asynchronous motor by means of a wire.
8. A compressor comprising a three-phase asynchronous motor, characterized in that it is a three-phase asynchronous motor according to any one of claims 6 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710533347.6A CN107196562B (en) | 2017-07-03 | 2017-07-03 | Starter, three-phase asynchronous motor and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710533347.6A CN107196562B (en) | 2017-07-03 | 2017-07-03 | Starter, three-phase asynchronous motor and compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107196562A CN107196562A (en) | 2017-09-22 |
| CN107196562B true CN107196562B (en) | 2024-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710533347.6A Active CN107196562B (en) | 2017-07-03 | 2017-07-03 | Starter, three-phase asynchronous motor and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107196562B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4481494A (en) * | 1983-01-31 | 1984-11-06 | Therm-O-Disc, Incorporated | Bi-metal snap disc operated relay |
| CN204886750U (en) * | 2015-07-24 | 2015-12-16 | 珠海凌达压缩机有限公司 | Three-phase motor starting circuit and compressor |
| CN206908534U (en) * | 2017-07-03 | 2018-01-19 | 珠海凌达压缩机有限公司 | starter, three-phase asynchronous motor and compressor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1131445A (en) * | 1997-07-10 | 1999-02-02 | Texas Instr Japan Ltd | Switch device |
| US7071650B2 (en) * | 2003-07-09 | 2006-07-04 | Matsushita Electric Industrial Co., Ltd. | Synchronous induction motor and electric hermetic compressor using the same |
| CN203721630U (en) * | 2014-01-03 | 2014-07-16 | 广东美的厨房电器制造有限公司 | Temperature controller and electric oven |
| CN105679603B (en) * | 2016-03-18 | 2018-03-13 | 厦门赛尔特电子有限公司 | A kind of temperature sensitive type change-over switch |
-
2017
- 2017-07-03 CN CN201710533347.6A patent/CN107196562B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4481494A (en) * | 1983-01-31 | 1984-11-06 | Therm-O-Disc, Incorporated | Bi-metal snap disc operated relay |
| CN204886750U (en) * | 2015-07-24 | 2015-12-16 | 珠海凌达压缩机有限公司 | Three-phase motor starting circuit and compressor |
| CN206908534U (en) * | 2017-07-03 | 2018-01-19 | 珠海凌达压缩机有限公司 | starter, three-phase asynchronous motor and compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107196562A (en) | 2017-09-22 |
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