CN2754025Y - Refrigerating assembly heating-refrigerating conversion controller - Google Patents
Refrigerating assembly heating-refrigerating conversion controller Download PDFInfo
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- CN2754025Y CN2754025Y CN 200420095364 CN200420095364U CN2754025Y CN 2754025 Y CN2754025 Y CN 2754025Y CN 200420095364 CN200420095364 CN 200420095364 CN 200420095364 U CN200420095364 U CN 200420095364U CN 2754025 Y CN2754025 Y CN 2754025Y
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Abstract
The utility model relates to a heating and refrigerating conversion controller of a refrigerating assembly, which belongs to the control technical field of an electronic refrigerating device. The utility model solves the technical problem that a contact switch of a function conversion circuit in the heating and refrigerating conversion controller of the original refrigerating assembly is changed into a contactless switch. A protective circuit is easy to increase to cause the circuit to have the advantages of simple structure, low cost, good reliability and long service life. A contactless switch device is connected between the heating and refrigerating conversion switch and a negative electrode. The control electrode of the contactless switch device is connected with an output end of at least one circuit of an overheat protection circuit, an undervoltage protective circuit, a reversal protective circuit of a power supply electrode and a temperature control circuit. The contactless switch device can be an insulated gate field-effect transistor, or a power transistor or an insulated gate bipolar transistor. The utility model is mainly applied to electronic cooling and heating boxes.
Description
Technical field
The utility model relates to electronic cooling device control technology field, particularly a kind of cooling assembly heating and cooling switching controller.
Background technology
Existing heating and cooling change-over circuit comprises heating and cooling change-over switch SW and cooling assembly P, as shown in Figure 1.
Heating and cooling change-over switch SW has the upper, middle and lower third gear.When pushing when performing the position, movable contact spring C is connected electric contact S1 with S2, and movable contact spring D is connected electric contact S7 with S8.At this moment, the A of cooling assembly P very+, B very-, enter refrigerating state.When heating and cooling change-over switch SW pushed the lower gear position, movable contact spring C was connected electric contact S3 with S4, and movable contact spring D is connected electric contact S5 with S6, the A of cooling assembly P very-, B very+, enter heated condition.The middle-grade position of heating and cooling change-over switch SW is the aircraft gate.
This shows, existing heating and cooling change-over circuit, the function that only has heating, refrigeration, three kinds of states of shutdown is switched, and does not have circuit protection function, also can not carry out temperature control, therefore can not satisfy the demand that modern society improves constantly properties of product.
Summary of the invention
The technical problems to be solved in the utility model is can easily add temperature-control circuit and various holding circuit in heating and cooling change-over switch and cooling assembly loop, and then reaches the purpose of enhancing product performance, simplifying circuit design, prolong working life.
The technical solution that the utility model proposed is such: a kind of cooling assembly heating and cooling switching controller; comprise cooling assembly, heating and cooling change-over switch SW; and overheating protection circuit, low-voltage protection circuit, power electrode reverse protection circuit and temperature-control circuit; be connected to noncontacting switch device Q1 between described heating and cooling change-over switch SW and power cathode, its control utmost point is connected with overheating protection circuit, low-voltage protection circuit, power electrode reverse protection circuit and at least one circuit output end in the temperature-control circuit.Described noncontacting switch device Q1 can be FET VMOS, and its grid G is connected with the output of at least one circuit in the temperature-control circuit with described holding circuit, and its drain D is connected with described change-over switch SW.Described noncontacting switch device Q1 also can be power transistor GTR, and its colelctor electrode C is connected with described change-over switch SW, and its base stage B is connected with the output of at least one circuit in the temperature-control circuit with described holding circuit.Described noncontacting switch device Q1 also can adopt insulated gate bipolar transistor IGBT, and its colelctor electrode C is connected with described change-over switch SW, and its grid G is connected with the output of at least one circuit in the temperature-control circuit with described holding circuit.
Compared with prior art, the utlity model has following beneficial effect:
Owing between the change-over switch SW of cooling assembly heating and cooling switching controller and power cathode, be connected to noncontacting switch device Q1; its control utmost point is connected with the output of at least one circuit in the temperature-control circuit with overheating protection circuit, low-voltage protection circuit, power electrode reverse protection circuit, thereby makes this controller have high reliability, low cost, long-life beneficial effect.Simultaneously, adopted the noncontacting switch device after, circuit is succinct, performance is also more preceding good.
The utility model is mainly used in the electronics cool and hot box.
Description of drawings
Fig. 1 is the circuit theory diagrams of existing cooling assembly heating and cooling switching controller.
Fig. 2 is the circuit theory diagrams of the 1st embodiment of the utility model, and its function change-over switch device Q1 adopts isolated gate FET (VMOS pipe).
Fig. 3 is the circuit theory diagrams of the 2nd embodiment of the utility model, and its function change-over switch device Q1 adopts power transistor (GTR pipe).
Fig. 4 is the circuit theory diagrams of the 3rd embodiment of the utility model, and its function switching device Q1 adopts igbt (IGBT pipe).
The specific embodiment
By following embodiment the utility model is further elaborated.
Embodiment 1
Referring to shown in Figure 2; present embodiment is the cooling assembly heating and cooling switching controller that has the electronics cool and hot box of overtemperature protection to use; SW is a change-over switch among the figure; cooling assembly P can heat, freezing and shut down optional one in three kinds of control modes; but its duty also will be subjected to the control of noncontacting switch device Q1 simultaneously, and when promptly switching device Q1 opened, heating or refrigerating mode thereof could normally carry out; otherwise power cathode is for cut-offfing state, and cooling assembly P can not obtain electric energy.
What noncontacting switch device Q1 adopted in this example is the VMOS FET, and its grid G is connected with the output of overheating protection circuit, and drain D is connected with change-over switch SW, and its source S is connected with power cathode.
When protected part does not have superheating phenomenon, overheating protection circuit output high level, thereby between the grid source electrode of VMOS FET Q1, add a high voltage, FET is in opening state, and power cathode and change-over switch SW are connected.At this moment, if change-over switch SW is in refrigeration or heated condition, then cooling assembly P will be coupled with operating voltage, run in refrigeration (or heating) state.
But when the generation superheating phenomenon was divided in the protected portion, the overheating protection circuit output low level was closed FET Q1, and the path between power cathode and the change-over switch SW is cut off, thereby forced refrigeration (or heating) state to stop.
Embodiment 2
Referring to shown in Figure 3, present embodiment is for there being temperature controlled electronic cooling assembly heating and cooling switching controller.Noncontacting switch device Q1 adopts power transistor GTR, and its colelctor electrode C is connected with change-over switch SW, and its base stage B is connected with the output of temperature-control circuit, and emitter E is connected with power cathode.
The base stage B of power transistor GTR is subjected to the control of temperature-control circuit, thereby makes power transistor GTR conducting or disconnection.Concrete control situation is identical with example 1.
Embodiment 3
Referring to shown in Figure 4, this example is for there being the electronic cooling assembly heating and cooling switching controller of overtemperature protection, low-voltage protection and power electrode reverse protection simultaneously.Noncontacting switch device Q1 adopts insulated gate bipolar transistor IGBT, and its colelctor electrode C is connected with change-over switch SW, and its grid G is connected with the output of above-mentioned three kinds of holding circuits, and emitter E is connected with power cathode.
When in above-mentioned three kinds of holding circuits any was output as low level (promptly being in abnormal state), insulated gate bipolar transistor IGBT promptly can be closed, and the path between power cathode and the change-over switch SW is cut off, and stopped refrigeration (or heating).
Only when above-mentioned three kinds of holding circuits all were output as high level (promptly all normal), refrigeration (or heating) could normally be carried out.
Claims (4)
1, a kind of cooling assembly heating and cooling switching controller; comprise cooling assembly, heating and cooling change-over switch (SW); and overheating protection circuit, low-voltage protection circuit, power electrode reverse protection circuit and temperature-control circuit; it is characterized in that: be connected to noncontacting switch device (Q1) between described heating and cooling change-over switch (SW) and power cathode, its control utmost point is connected with overheating protection circuit, low-voltage protection circuit, power electrode reverse protection circuit and at least one circuit output end in the temperature-control circuit.
2, cooling assembly heating and cooling switching controller according to claim 1; it is characterized in that: described noncontacting switch device (Q1) is a FET (VMOS); its grid (G) is connected with the output of at least one circuit in the temperature-control circuit with described holding circuit, and its drain electrode (D) is connected with described change-over switch (SW).
3, cooling assembly heating and cooling switching controller according to claim 1; it is characterized in that: described noncontacting switch device (Q1) is a power transistor (GTR); its colelctor electrode (C) is connected with described change-over switch (SW), and its base stage (B) is connected with the output of at least one circuit in the temperature-control circuit with described holding circuit.
4, cooling assembly heating and cooling switching controller according to claim 1; it is characterized in that: described noncontacting switch device (Q1) is an igbt (IGBT); its colelctor electrode (C) is connected with described change-over switch (SW), and its grid (G) is connected with the output of at least one circuit in the temperature-control circuit with described holding circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420095364 CN2754025Y (en) | 2004-11-11 | 2004-11-11 | Refrigerating assembly heating-refrigerating conversion controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420095364 CN2754025Y (en) | 2004-11-11 | 2004-11-11 | Refrigerating assembly heating-refrigerating conversion controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2754025Y true CN2754025Y (en) | 2006-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420095364 Expired - Fee Related CN2754025Y (en) | 2004-11-11 | 2004-11-11 | Refrigerating assembly heating-refrigerating conversion controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2754025Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296462A (en) * | 2014-10-13 | 2015-01-21 | 合肥美的电冰箱有限公司 | Control circuit of turnover beam heater and refrigerator |
| CN105841831A (en) * | 2015-02-03 | 2016-08-10 | 精工半导体有限公司 | Overheat detection circuit and power supply apparatus |
-
2004
- 2004-11-11 CN CN 200420095364 patent/CN2754025Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296462A (en) * | 2014-10-13 | 2015-01-21 | 合肥美的电冰箱有限公司 | Control circuit of turnover beam heater and refrigerator |
| CN105841831A (en) * | 2015-02-03 | 2016-08-10 | 精工半导体有限公司 | Overheat detection circuit and power supply apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Foshan Shunde Junda Electronic Co., Ltd. Assignor: Yang Yigen Contract fulfillment period: 2009.11.1 to 2014.11.10 Contract record no.: 2009440001789 Denomination of utility model: Refrigerating assembly heating-refrigerating conversion controller Granted publication date: 20060125 License type: Exclusive license Record date: 20091112 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.11.1 TO 2014.11.10; CHANGE OF CONTRACT Name of requester: JUNDA ELECTRONICS CO., LTD., SHUNDE DISTRICT, FOSH Effective date: 20091112 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060125 Termination date: 20101111 |