CN105739565A - Constant temperature box capable of refrigerating and heating - Google Patents
Constant temperature box capable of refrigerating and heating Download PDFInfo
- Publication number
- CN105739565A CN105739565A CN201610096833.1A CN201610096833A CN105739565A CN 105739565 A CN105739565 A CN 105739565A CN 201610096833 A CN201610096833 A CN 201610096833A CN 105739565 A CN105739565 A CN 105739565A
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- CN
- China
- Prior art keywords
- circuit
- heating
- refrigerating
- box
- refrigeration
- 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
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Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
A constant temperature box capable of refrigerating and heating selects a storage battery pack as a working power supply, is equipped with refrigerating and heating switching switches and the refrigerating and heating temperature setting values, and is characterized in that a box body is similar to a portable lunch box popular in the market, and a cover of the box body is equipped with a power supply switch, the refrigerating and heating switching switches, and the refrigerating and heating working state indicators. By operating the switching switches, a circuit can work under a refrigerating or heating working state, and by operating an adjustable resistor, the circuit can work within a temperature range at refrigeration or heating, namely, the circuit works at a constant temperature working state.
Description
Technical field
The present invention relates to the calorstat that a kind of refrigeration can heat again.
Background technology
Can not go home noon the people that has lunch in out operation, when need to be with ready-made lunch.In season in summer, it is desirable to it is cold for having the lunch that individual chiller makes to take, taste of turning sour not so can be there is；In season in winter, it is desirable to having the lunch that individual heat energy apparatus makes to take can be maintained at uniform temperature, not so meal is cold is not very good eating.
Summary of the invention
The calorstat that a kind of refrigeration of the present invention can heat again, a kind of calorstat that can heat again that can freeze is disclosed, this calorstat, outward appearance selects portable lunch box popular on market, but internal components increases semiconductor refrigerating control circuit equipment, utilize the function of semiconductor chilling plate, by the switching switch freezed and heat, make portable lunch box have refrigeration and heat-production functions, utilize again temperature sensor element, allow the cold and hot temperature automatic adjustment of portable lunch box, keep constant temperature by the temperature set.
The calorstat that a kind of refrigeration heats again, its circuit composition is made up of as indicator circuit accumulator battery E, thermometric bridge circuit, cold/hot temperature switching circuit, semiconductor chilling plate circuit and merit.
Accompanying drawing explanation
Accompanying drawing is the circuit theory diagrams of the calorstat that a kind of refrigeration can heat again.
Detailed description of the invention
As shown in drawings, E is set of cells, is arranged on the bottom of suitcase, and voltage is DC12V, controls switch K1 by one and is connected with next stage circuit, and K is arranged on the lid of suitcase.
R1, R2, R3 and W form thermometric bridge circuit, and wherein W is the critesistor of thermometric, is arranged on below case lid, in order to the accurately temperature in detection casing.R4 is adjustable resistance, is arranged on above chest by regulating handle, regulates the resistance of R4, can set required the temperature inside the box, control circuit is automatically adjusted and keeps constant the temperature inside the box.
As shown in drawings, switch K2 forms cold/hot temperature switching circuit.Setting " 2 " is refrigeration control control point；" 3 " are for heating control point.IC2, IC3 form amplifying circuit, and the signal exported by thermometric bridge output circuit amplifies, and gives next stage circuit.
Process of refrigerastion: when switching switch K2 be placed in refrigeration shelf " 2 " time, integrated transporting discharging IC2, IC3 "+" input all by R1, R2 composition potentiometer be biased in 1/2UCC(i.e. 6V) place, the "-" input termination critesistor W of IC2.When the temperature inside the box is higher than design temperature, W resistance diminishes, and the in-phase end current potential of IC2 is lower than end of oppisite phase current potential, the outfan of IC2 is low level, is that high level makes control pipe T turn on through IC3 paraphase, and circuit is operated in refrigerating state, diode D2 is shinny, and expression is the duty of refrigeration.
When the temperature inside the box drop to design temperature once time, the anti-phase input terminal potential "-" of IC2 less than in-phase input end "+", the outfan of IC2 is high level, it is that low level makes control pipe T end through IC3 paraphase, circuit stops refrigeration, and diode D1 is shinny, and expression is the duty heated.The value regulating W can change the design temperature of refrigeration.
Heating operations: when switching switch K2 is placed in and heats shelves " 3 ", circuit makes state for heating merit.The level of IC2 outfan directly controls pipe T without IC3 paraphase.When the temperature inside the box is lower than design temperature, W resistance becomes big, and the end of oppisite phase current potential of IC2 is less than in-phase end current potential, and IC2 outfan is output as high level, controls pipe T conducting, and circuit is operated in the state of heating, and now diode D1 is bright.
When the temperature inside the box rises to more than design temperature, controlling pipe T cut-off, circuit stops heating, and D1 goes out.Regulate W to change equally and heat design temperature.
Claims (1)
1. freeze the calorstat that can heat again, and its circuit composition is made up of accumulator battery E, thermometric bridge circuit, cold/hot temperature switching circuit, adjustable potentiometer, semiconductor chilling plate and operation indicator；Described set of cells selects the aneroid battery of freedom from repairs, and voltage is DC12V；Described thermometric bridge circuit, is made up of resistance R1, R2, R3, R4 and critesistor W；Cold/hot temperature switching circuit is switched switch by 3 cuttves and forms, and switching switch is when different operating position, it is possible to make circuit be operated in refrigeration or the duty heated；Regulating adjustable potentiometer can make the temperature inside the box have a setting value, and namely circuit automatically operates in range of set value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610096833.1A CN105739565A (en) | 2016-02-22 | 2016-02-22 | Constant temperature box capable of refrigerating and heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610096833.1A CN105739565A (en) | 2016-02-22 | 2016-02-22 | Constant temperature box capable of refrigerating and heating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105739565A true CN105739565A (en) | 2016-07-06 |
Family
ID=56242005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610096833.1A Pending CN105739565A (en) | 2016-02-22 | 2016-02-22 | Constant temperature box capable of refrigerating and heating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105739565A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117308499A (en) * | 2023-09-25 | 2023-12-29 | 广东英得尔实业发展有限公司 | Refrigerating and heating mode switching method of vehicle-mounted refrigerator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2092722U (en) * | 1991-02-12 | 1992-01-08 | 蒲连金 | Cooling, heating and temp. preserving box |
| CN2331924Y (en) * | 1998-05-28 | 1999-08-04 | 汤国安 | Semiconductor refrigeration and heating box |
| CN2470763Y (en) * | 2001-03-09 | 2002-01-09 | 上海纽福克斯汽车配件有限公司 | Mini-size cooling-warming box |
| CN1680761A (en) * | 2004-04-06 | 2005-10-12 | 陆刚 | Multi-purpose heating and refrigerating thermal insulative bag |
| JP2007139328A (en) * | 2005-11-18 | 2007-06-07 | Seishi Takagi | Cooling/cold insulating vessel and peltier module thereof |
| CN201754251U (en) * | 2010-07-16 | 2011-03-02 | 陈永江 | Cooling and heating control circuit |
-
2016
- 2016-02-22 CN CN201610096833.1A patent/CN105739565A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2092722U (en) * | 1991-02-12 | 1992-01-08 | 蒲连金 | Cooling, heating and temp. preserving box |
| CN2331924Y (en) * | 1998-05-28 | 1999-08-04 | 汤国安 | Semiconductor refrigeration and heating box |
| CN2470763Y (en) * | 2001-03-09 | 2002-01-09 | 上海纽福克斯汽车配件有限公司 | Mini-size cooling-warming box |
| CN1680761A (en) * | 2004-04-06 | 2005-10-12 | 陆刚 | Multi-purpose heating and refrigerating thermal insulative bag |
| JP2007139328A (en) * | 2005-11-18 | 2007-06-07 | Seishi Takagi | Cooling/cold insulating vessel and peltier module thereof |
| CN201754251U (en) * | 2010-07-16 | 2011-03-02 | 陈永江 | Cooling and heating control circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117308499A (en) * | 2023-09-25 | 2023-12-29 | 广东英得尔实业发展有限公司 | Refrigerating and heating mode switching method of vehicle-mounted refrigerator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160706 |