CN213988735U - Three-phase liquid expansion type protector - Google Patents
Three-phase liquid expansion type protector Download PDFInfo
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- CN213988735U CN213988735U CN202023228115.6U CN202023228115U CN213988735U CN 213988735 U CN213988735 U CN 213988735U CN 202023228115 U CN202023228115 U CN 202023228115U CN 213988735 U CN213988735 U CN 213988735U
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Abstract
The utility model belongs to the technical field of the temperature controller, concretely relates to three-phase liquid inflation formula protector. This three-phase liquid inflation formula protector includes: the three groups of wiring end groups, each group of wiring end group comprises a movable contact terminal and a static contact terminal which are communicated; and a temperature sensing drive mechanism; the temperature sensing driving mechanism is suitable for disconnecting the movable contact terminals and the fixed contact terminals in the three groups of wiring terminals when the temperature reaches a preset value. The beneficial effects of the utility model are that, the utility model discloses a three-phase liquid inflation formula protector has three group's wiring end group, and every group wiring end group is including the movable contact terminal and the stationary contact terminal of intercommunication, and temperature sensing actuating mechanism can be when the temperature reaches the default with three group wiring end group's movable contact terminal and stationary contact terminal disconnection simultaneously, can insert three phase circuit simultaneously to realize the single-pole triple throw.
Description
Technical Field
The utility model belongs to the technical field of the temperature controller, concretely relates to three-phase liquid inflation formula protector.
Background
The liquid expansion type protector mainly works by utilizing the principle that liquid expands with heat and contracts with cold. When the temperature rises, the liquid in the temperature sensing assembly expands, and the switch is disconnected through a mechanical structure, so that the protection purpose is achieved. Liquid expansion type protectors are commonly used on water heaters, electric fryers, electric ovens, electric warmers, and the like.
The existing liquid expansion type protector is independently connected with a live wire to realize single-pole single-throw, or is simultaneously connected with a live wire and a zero wire to realize single-pole double-throw. However, as society develops, more and more electrical appliances using a three-phase power supply are required, and a three-phase liquid expansion type protector is required.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a three-phase liquid inflation formula protector inserts three-phase circuit simultaneously to realize the single-pole triple-throw.
In order to solve the technical problem, the utility model provides a three-phase liquid inflation formula protector, include: the three groups of wiring end groups, each group of wiring end group comprises a movable contact terminal and a static contact terminal which are communicated; and a temperature sensing drive mechanism; the temperature sensing driving mechanism is suitable for disconnecting the movable contact terminals and the fixed contact terminals in the three groups of wiring terminals when the temperature reaches a preset value.
Further, the temperature sensitive driving mechanism includes: the temperature sensing assembly is filled with a temperature sensing medium; the diaphragm capsule assembly is communicated with the temperature sensing assembly; and a push rod; the temperature sensing assembly is suitable for driving the push rod to act through the diaphragm capsule assembly when the temperature reaches a preset value, so that the movable contact terminals and the static contact terminals in the three groups of wiring terminal groups are disconnected simultaneously.
Further, the diaphragm capsule assembly includes: the end surface of the diaphragm capsule shell is provided with a through hole; the diaphragm is positioned in the diaphragm box shell and forms a liquid storage cavity for storing the temperature sensing medium together with the diaphragm box shell; the liquid storage cavity is communicated with the temperature sensing assembly through a through hole; wherein the liquid storage cavity is in a negative pressure state, and the diaphragm protrudes towards the inside of the liquid storage cavity under the negative pressure; when the pressure in the liquid storage cavity is increased to reach a preset value, the diaphragm suddenly jumps and turns over, and meanwhile, the push rod is driven to act.
Further, the temperature sensing assembly includes: a temperature sensing cylinder, in which a temperature sensing medium is arranged; and one end of the capillary tube is communicated with the inside of the temperature sensing cylinder, and the other end of the capillary tube is communicated with the through hole on the diaphragm capsule shell.
Further, the three groups of the wiring end groups are arranged side by side; the movable contact terminal is communicated with the static contact terminal through a reed arranged on the movable contact terminal; the push rod is in a cross shape and comprises a vertical rod and a cross rod; the upright stanchion is linked with the membrane box assembly, and the cross rod is used for pushing the reed.
Furthermore, the reed of the terminal group positioned in the middle is provided with a mounting hole for the vertical rod to pass through.
Further, the three-phase fluid expansion protector further comprises a base; one end face of the base is fixedly connected with the diaphragm capsule shell, and the other end face is provided with three wiring end group mounting positions side by side; and the wiring end group is riveted with the mounting position of the wiring end group.
Further, an insulating baffle is arranged at the position adjacent to the wiring end group; and a sliding groove for the push rod to pass through is arranged between the insulating baffles.
Further, the three-phase liquid expansion protector further comprises a protective cover; the protective cover is suitable for covering the end face of the base provided with the wiring terminal group installation position.
Further, the protective cover is provided with a mounting seat; and a channel for the reset end of the push rod to penetrate out is arranged on the mounting seat.
The beneficial effects of the utility model are that, the utility model discloses a three-phase liquid inflation formula protector has three group's wiring end group, and every group wiring end group is including the movable contact terminal and the stationary contact terminal of intercommunication, and temperature sensing actuating mechanism can be when the temperature reaches the default with three group wiring end group's movable contact terminal and stationary contact terminal disconnection simultaneously, can insert three phase circuit simultaneously to realize the single-pole triple throw.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
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 embodiments or the technical solutions in 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a perspective view of a three-phase liquid expansion type protector of the present invention;
fig. 2 is an exploded view of the three-phase liquid expansion protector of the present invention;
fig. 3 is a schematic view of the capsule assembly when the terminal sets of the three-phase fluid expansion type protector of the present invention are connected;
fig. 4 is a schematic view of the bellows assembly with the terminal block of the three-phase fluid expansion protector of the present invention broken;
fig. 5 is a schematic view of a temperature sensing assembly of the three-phase liquid expansion type protector of the present invention;
fig. 6 is a schematic view of a terminal block of a three-phase liquid expansion protector of the present invention;
fig. 7 is a schematic view of the base of the three-phase liquid expansion protector of the present invention;
fig. 8 is a schematic view of a protective cover of a three-phase liquid expansion protector of the present invention.
In the figure:
the terminal group 100, the movable contact terminal 110, the fixed contact terminal 120, the spring plate 130 and the mounting hole 131;
the temperature sensing driving mechanism 200, the temperature sensing component 210, the temperature sensing cylinder 211, the capillary 212, the diaphragm capsule component 220, the diaphragm capsule shell 221, the through hole 222, the diaphragm 223, the liquid storage cavity 224, the push rod 230, the vertical rod 231 and the cross rod 232;
the connector comprises a base 300, a terminal group mounting position 310, an insulating baffle 320 and a sliding groove 321;
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
As shown in fig. 1 and 2, the present embodiment provides a three-phase liquid expansion type protector including: three groups of terminal groups 100, each group of terminal group 100 comprises a movable contact terminal 110 and a fixed contact terminal 120 which are communicated; and a temperature-sensitive driving mechanism 200; wherein the temperature sensitive driving mechanism 200 is adapted to simultaneously disconnect the movable contact terminal 110 and the stationary contact terminal 120 in the three terminal sets 100 when the temperature reaches a preset value.
In this embodiment, the three-phase liquid expansion type protector has three groups of terminal groups 100, each group of terminal group 100 includes a movable contact terminal 110 and a stationary contact terminal 120 that are communicated, and the temperature sensing driving mechanism 200 can disconnect the movable contact terminal 110 and the stationary contact terminal 120 in the three groups of terminal groups 100 when the temperature reaches a preset value, and can simultaneously access a three-phase circuit to implement single-pole triple-throw.
As shown in fig. 2, in the present embodiment, as a preferred embodiment, the temperature sensing driving mechanism 200 includes: a temperature sensing assembly 210 filled with a temperature sensing medium; a diaphragm capsule assembly 220 in communication with the temperature sensing assembly 210; and a push rod 230; the temperature sensing assembly 210 is adapted to drive the push rod 230 to act through the diaphragm capsule assembly 220 when the temperature reaches a preset value, so as to simultaneously disconnect the movable contact terminal 110 and the fixed contact terminal 120 in the three terminal sets 100.
As shown in fig. 3 and 4, the membrane cartridge assembly 220 includes: a bellows case 221 having a through hole 222 formed in an end surface thereof; a diaphragm 223 located in the diaphragm casing 221, and forming a liquid storage cavity 224 with the diaphragm casing 221 for storing a temperature sensing medium; the liquid storage cavity 224 is communicated with the temperature sensing assembly 210 through a through hole 222; wherein the inside of the liquid storage cavity 224 is in a negative pressure state, and the diaphragm 223 protrudes towards the inside of the liquid storage cavity 224 under the negative pressure; when the pressure in the liquid storage cavity 224 increases to reach a preset value, the diaphragm 223 jumps and turns over, and the push rod 230 is driven to act.
In the present embodiment, the diaphragm 223 is initially protruded to the outside of the bellows housing 221, but during the production process, the liquid storage cavity 224 is set to a negative pressure state, so that the diaphragm 223 is protruded to the inside of the liquid storage cavity 224 under the negative pressure; thus, when the temperature sensing element 210 leaks, the negative pressure in the liquid storage cavity 224 disappears, the diaphragm 223 jumps and turns over towards the outer side of the bellows shell 221, the push rod 230 is driven to operate and cut off the circuit, and the leakage protection of the temperature sensing element 210 can be realized.
In normal operation, the diaphragm cartridge assembly 220 is in the state shown in fig. 3, and when the pressure in the liquid storage cavity 224 increases to a preset value, the diaphragm 223 jumps and turns over to the state shown in fig. 4, and drives the push rod 230 to act, and simultaneously disconnects the movable contact terminal 110 and the stationary contact terminal 120 in the three terminal sets 100.
As shown in fig. 5, optionally, the temperature sensing assembly 210 includes: a temperature sensing cylinder 211 in which a temperature sensing medium is disposed; and a capillary tube 212 having one end communicating with the inside of the temperature sensing cylinder 211 and the other end communicating with a through hole 222 of the bellows case 221.
In this embodiment, the temperature sensing cylinder 211, the capillary 212 and the liquid storage cavity 224 are communicated, and after the internal temperature sensing medium is heated and expanded, the pressure in the liquid storage cavity 224 is increased, and when the preset value is reached, the diaphragm 223 suddenly jumps and turns over, and simultaneously drives the push rod 230 to act, and simultaneously disconnects the movable contact terminal 110 and the stationary contact terminal 120 in the three sets of terminal sets 100.
As shown in fig. 6, optionally, three sets of the terminal sets 100 are arranged side by side; the movable contact terminal 110 is communicated with the fixed contact terminal 120 through a spring piece 130 arranged on the movable contact terminal 110; the push rod 230 is cross-shaped and comprises a vertical rod 231 and a cross rod 232; the upright 231 is linked with the diaphragm capsule assembly 220, and the cross bar 232 is used for pushing the spring plate 130.
In this embodiment, optionally, the spring plate 130 of the terminal group 100 located in the middle is provided with a mounting hole 131 for the vertical rod 231 to pass through.
In the present embodiment, the initial state of the spring 130 is a state of communicating with the stationary contact terminal 120, and can be achieved by prestressing; the vertical rod 231 is linked with the diaphragm cartridge assembly 220, and the cross rod 232 is used for simultaneously pushing the spring leaves 130 on the three movable contact terminals 110 to simultaneously cut off the circuit.
To facilitate the installation of the three sets of terminal sets 100, as shown in fig. 7, the three-phase fluid expansion protector further comprises a base 300; one end face of the base 300 is fixedly connected with the bellows shell 221, and the other end face is provided with three terminal group mounting positions 310 side by side; the terminal block 100 is riveted to the terminal block mounting location 310 to enhance integrity and facilitate machining.
In this embodiment, it is preferable that an insulating barrier 320 is disposed adjacent to the terminal group mounting locations 310, so as to insulate the adjacent terminal groups 100; a sliding groove 321 for the push rod 230 to pass through is arranged between the insulating baffles 320.
As shown in fig. 8, in the present embodiment, the three-phase liquid expansion type protector further includes a protective cover 400; the protective cover 400 is adapted to cover the end surface of the base 300 where the terminal group mounting locations 310 are disposed, for protecting the circuit devices inside the base 300.
In this embodiment, it is preferable that the protective cover 400 is provided with a mounting seat 410; the mounting seat 410 is provided with a channel 411 for the reset end of the push rod 230 to pass through.
In this embodiment, the mounting seat 410 may be used to nest a button or other component.
In summary, the three-phase liquid expansion type protector has three groups of terminal groups 100, each group of terminal group 100 includes a movable contact terminal 110 and a stationary contact terminal 120 which are communicated, and the temperature sensing driving mechanism 200 can disconnect the movable contact terminal 110 and the stationary contact terminal 120 in the three groups of terminal groups 100 when the temperature reaches a preset value, and can simultaneously access a three-phase circuit to realize single-pole triple-throw; the liquid storage cavity 224 is in a negative pressure state, so that leakage protection can be realized; one end face of the base 300 is fixedly connected with the bellows shell 221, and the other end face is provided with three terminal group mounting positions 310 side by side; the terminal group 100 is riveted with the terminal group mounting position 310 to enhance integrity and facilitate processing; the protective cover 400 is adapted to cover the end surface of the base 300 where the terminal group mounting sites 310 are located, for protecting the circuit devices inside the base 300.
The components selected for use in the present application (components not illustrated for specific structures) are all common standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experimentation.
In the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A three-phase fluid expansion protector, comprising:
the three groups of terminal groups (100), each group of terminal group (100) comprises a movable contact terminal (110) and a fixed contact terminal (120) which are communicated; and
a temperature sensing drive mechanism (200); wherein
The temperature sensing driving mechanism (200) is suitable for simultaneously disconnecting the movable contact terminal (110) and the fixed contact terminal (120) in the three groups of terminal groups (100) when the temperature reaches a preset value.
2. The three-phase liquid expansion protector of claim 1,
the temperature-sensitive drive mechanism (200) includes:
a temperature sensing assembly (210) filled with a temperature sensing medium;
a diaphragm capsule assembly (220) in communication with the temperature sensing assembly (210); and
a push rod (230); wherein
The temperature sensing assembly (210) is suitable for driving the push rod (230) to act through the diaphragm capsule assembly (220) when the temperature reaches a preset value, so as to simultaneously disconnect the movable contact terminal (110) and the fixed contact terminal (120) in the three groups of terminal groups (100).
3. The three-phase liquid expansion protector according to claim 2,
the membrane cassette assembly (220) comprises:
a bellows housing (221) having a through hole (222) formed in an end surface thereof;
the diaphragm (223) is positioned in the diaphragm casing (221) and forms a liquid storage cavity (224) for storing the temperature sensing medium with the diaphragm casing (221);
the liquid storage cavity (224) is communicated with the temperature sensing assembly (210) through a through hole (222); wherein
The liquid storage cavity (224) is in a negative pressure state, and the diaphragm (223) protrudes towards the inside of the liquid storage cavity (224) under the negative pressure;
when the pressure in the liquid storage cavity (224) is increased to reach a preset value, the diaphragm (223) jumps and turns over, and the push rod (230) is driven to act.
4. Three-phase liquid expansion protector according to claim 3,
the temperature sensing assembly (210) includes:
a temperature sensing cylinder (211) in which a temperature sensing medium is provided; and
and one end of the capillary tube (212) is communicated with the inside of the temperature sensing cylinder (211), and the other end is communicated with a through hole (222) on the bellows shell (221).
5. The three-phase liquid expansion protector according to claim 2,
the three groups of the wiring end groups (100) are arranged side by side;
the movable contact terminal (110) is communicated with the fixed contact terminal (120) through a reed (130) arranged on the movable contact terminal (110);
the push rod (230) is in a cross shape and comprises a vertical rod (231) and a cross rod (232);
the upright rod (231) is linked with the diaphragm capsule assembly (220), and the cross rod (232) is used for pushing the reed (130).
6. Three-phase liquid expansion protector according to claim 5,
and the reed (130) of the terminal group (100) positioned in the middle is provided with a mounting hole (131) for the vertical rod (231) to pass through.
7. Three-phase liquid expansion protector according to claim 3,
the three-phase liquid expansion protector further comprises a base (300);
one end face of the base (300) is fixedly connected with the diaphragm capsule shell (221), and the other end face is provided with three wiring end group mounting positions (310) side by side;
the terminal group (100) is riveted with the terminal group mounting position (310).
8. The three-phase liquid expansion protector according to claim 7,
an insulating baffle (320) is arranged adjacent to the wiring terminal group mounting position (310);
and a sliding groove (321) for the push rod (230) to pass through is arranged between the insulating baffles (320).
9. The three-phase liquid expansion protector according to claim 8,
the three-phase liquid expansion protector further comprises a protective cover (400);
the protective cover (400) is suitable for covering the end face of the base (300) provided with the terminal group mounting position (310).
10. The three-phase liquid expansion protector of claim 9,
the protective cover (400) is provided with a mounting seat (410);
the mounting seat (410) is provided with a channel (411) for the reset end of the push rod (230) to penetrate out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023228115.6U CN213988735U (en) | 2020-12-28 | 2020-12-28 | Three-phase liquid expansion type protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023228115.6U CN213988735U (en) | 2020-12-28 | 2020-12-28 | Three-phase liquid expansion type protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213988735U true CN213988735U (en) | 2021-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023228115.6U Active CN213988735U (en) | 2020-12-28 | 2020-12-28 | Three-phase liquid expansion type protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213988735U (en) |
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2020
- 2020-12-28 CN CN202023228115.6U patent/CN213988735U/en active Active
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