CN102353228B - Refrigerating system and refrigeration equipment with same - Google Patents
Refrigerating system and refrigeration equipment with same Download PDFInfo
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- CN102353228B CN102353228B CN 201110271085 CN201110271085A CN102353228B CN 102353228 B CN102353228 B CN 102353228B CN 201110271085 CN201110271085 CN 201110271085 CN 201110271085 A CN201110271085 A CN 201110271085A CN 102353228 B CN102353228 B CN 102353228B
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- heater
- compressor
- switching unit
- refrigeration system
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Abstract
The invention provides a refrigerating system and refrigeration equipment with the same. The refrigerating system comprises a compressor, a heater, a first switching unit, a second switching unit and a controller, wherein a first terminal of the compressor is connected with the N-pole of a power supply, and a second terminal of the compressor is connected with the N-pole of the power supply through a resistor and an inductor which are connected in parallel; one end of the heater is connected with the first switching unit, and the other end of the heater is respectively connected with a third terminal of the compressor and the second switching unit; one end of the first switching unit is connected with the heater, and the other end of the first switching unit is connected with the L-pole of the power supply; one end of the second switching unit is respectively connected with the heater and the third terminal of the compressor, and the other end of the second switching unit is connected with the L-pole of the power supply; and the controller is respectively connected with the first switching unit and the second switching unit, and is used for controlling the closing and opening of the first switching unit and the second switching unit. The refrigerating system provided by the invention has the advantages of preventing the heater from working all the time even when the compressor and the heater do not work simultaneously, and effectively avoiding the potential safety hazard generated by the operation of the heater all the time.
Description
Technical field
The present invention relates to electrical equipment manufacturing technology field, particularly a kind of refrigeration system and refrigeration plant that have it.
Background technology
At present, the refrigeration system of refrigerator often use electric heater to carry out temperature-compensating or remove on evaporimeter, doorframe limit, frost, dew that glass door body etc. is located to condense, with the assurance properties of product, and control the work such as compressor, heater by the singlechip chip on circuit board.
Fig. 1 is the control circuit schematic diagram of the refrigeration system of prior art.As shown in Figure 1, adopt compressor 100 ' and the separate control mode of heater 200 ', compressor 100 ' is connected with switch unit 400 ', and heater 200 ' is connected with switch unit 300 '.Switch unit 400 ' is controlled compressor, switch unit 300 ' control heater, and both separately control, and are unrelated.
The problem that prior art exists is, on the one hand, if equipment because certain reason (as inefficacy of external interference, design defect or device itself etc.) makes switch unit 300 ' be in all the time conducting state, causes the heater work of switching on continuously, because the insulation material of equipment is that polyurethane material is foamed into, it is a kind of combustible material, in case the heater continuous operation, might Yin Wendu gather, raise, foaming layer is burnt, cause fire, therefore, have great potential safety hazard.On the other hand, refrigeration plant, for example refrigerator is all controlled by software mode, and uncontrollable factor is many, all might cause the continuous firing of heater as factors such as selecting of the antijamming capability of the structure of software programming personnel's level, software, electric-controlled plate and device.
Summary of the invention
Purpose of the present invention is intended to solve at least one of above-mentioned technological deficiency.
For this reason, one object of the present invention is to propose a kind of refrigeration system.
Another object of the present invention is to propose a kind of refrigeration plant with above-mentioned refrigeration system.
For achieving the above object, the embodiment of first aspect present invention proposes a kind of refrigeration system, comprise: compressor, the first terminals of described compressor are connected with the N utmost point of power supply, and the second terminals of described compressor are connected with the N utmost point of described power supply with inductance by resistance in parallel; Heater, an end of described heater is connected with described the first switch unit, the other end of described heater respectively with the 3rd terminals of described compressor be connected switch unit and be connected, and the resistance of described heater is greater than the resistance of described compressor main winding; The first switch unit, an end of described the first switch unit is connected with described heater, and the other end of described the first switch unit is connected with the L utmost point of power supply; The second switch unit, an end of described the second switch unit respectively with described heater be connected the 3rd terminals of compressor and be connected, the other end of described the second switch unit is connected with the L utmost point of described power supply; And controller, described controller is connected with described the second switch unit with described the first switch unit respectively, is used for controlling the closed and disconnected of described the first switch unit and described the second switch unit.
In one embodiment of the invention, described the first switch unit and described the second switch unit comprise relay and switch.
In one embodiment of the invention, when described the first switch unit closure, when described the second switch unit disconnects, described heater work, described compressor is not worked; When described the second switch unit closure, when described the first switch unit disconnects, described compressor operating, described heater is not worked; When closed and described the second switch unit was also closed when described the first switch unit, described heater was not worked, described compressor operating.
Refrigeration system according to the embodiment of the present invention, by compressor and heater are jointly controlled, can guarantee that compressor and heater can not work simultaneously, also the situation that heater is worked all the time can not occur, the potential safety hazard of effectively avoiding heater to work all the time and produce.Simultaneously, make simply, production cost is low.
The embodiment of second aspect present invention proposes a kind of refrigeration plant, comprising: casing is limited with at least one chamber in described casing; And refrigeration system, described refrigeration system is refrigeration system described according to first aspect present invention embodiment, described refrigeration system is used for described at least one chamber refrigeration.
According to the refrigeration plant of the embodiment of the present invention, by using above-mentioned refrigeration system, can effectively avoid potential safety hazard, improve security performance and the service life of refrigeration plant, simultaneously, production cost is lower.
The aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or the additional aspect of the present invention and advantage will become from the following description of the accompanying drawings of embodiments and obviously and easily understand, wherein:
Fig. 1 is the control circuit schematic diagram of the refrigeration system of prior art; And
Fig. 2 is the schematic diagram of the refrigeration system of one embodiment of the invention.
The specific embodiment
The below describes embodiments of the invention in detail, and the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " only are used for describing purpose, and can not be interpreted as indication or hint relative importance.
In description of the invention, need to prove, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be done broad understanding, for example, can be mechanical connection or electrical connection, can be also the connection of two element internals, can be directly to be connected, and also can indirectly be connected by intermediary, for the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
Describe the refrigeration system of the embodiment of the present invention in detail below with reference to Fig. 2.
Fig. 2 is the schematic diagram of the refrigeration system of one embodiment of the invention.As shown in Figure 2, the refrigeration system according to the embodiment of the present invention comprises compressor 100, heater 200, the first switch unit 300, the second switch unit 400 and controller 500.
Wherein, the first terminals of compressor 100 (being the M lead-in wire) are connected with the N utmost point of power supply, and the second terminals of compressor 100 (being the S lead-in wire) are connected with the N utmost point of power supply with inductance by resistance in parallel.One end of heater 200 is connected with the first switch unit 300, the other end of heater 200 respectively with the 3rd terminals (being C line) of compressor 100 be connected switch unit 400 and be connected, and the resistance of heater 200 is greater than the resistance of compressor 100 main windings.One end of the first switch unit 300 is connected with heater 200, and the other end of the first switch unit 300 is connected with the L utmost point of power supply.One end of the second switch unit 400 is connected with the 3rd terminals (being C line) that heater 200 is connected with compressor respectively, and the other end of the second switch unit 400 is connected with the L utmost point of power supply.Controller 500 is connected with the second switch unit 400 with the first switch unit 300 respectively, is used for controlling the closed and disconnected of the first switch unit 300 and the second switch unit 400.
Should be understood that the described power supply of the embodiment of the present invention can be the alternating-current voltage source of 220V, also can be other can be for the power supply of compressor operating.
In one embodiment of the invention, the first switch unit 300 and the second switch unit 400 can comprise relay and switch etc.
Describe the operation principle of the refrigeration system of the embodiment of the present invention in detail below in conjunction with Fig. 2.
When the first switch unit 300 closures, when the second switch unit 400 disconnected, as shown in Figure 2, heater 200 consisted of a series loop with the main winding of compressor 100, and the voltage at heater two ends is U
R=(R/ (R+R
CM)) * 220, wherein, R is the resistance value of heater 200, R
CMBe the resistance of the main winding of compressor 100, due to the resistance R of the main winding of the long-range compressor 100 of resistance value R of heater 200
CM, the pressure drop of heater 200 will be much larger than the pressure drop of compressor 100, and therefore, heater 200 is worked, and compressor 100 can't be worked because pressure drop is too low.
When the second switch unit 400 closures, when the first switch unit 300 disconnected, as shown in Figure 2, compressor 100 and the second switch unit 400 consisted of the closed-loop path, therefore, compressor 100 work, heater 200 is not worked.
When closed and the second switch unit 400 was also closed when the first switch unit 300, as shown in Figure 2, compressor 100 consisted of the closed-loop path with the second switch unit 400, so compressor 100 is worked.But due to the electric power polarity identical (being all the L utmost point) at heater 200 two ends, so heater 200 can't be worked.
Refrigeration system according to the embodiment of the present invention, by compressor and heater are jointly controlled, can guarantee that compressor and heater can not work simultaneously, also the situation that heater is worked all the time can not occur, the potential safety hazard of effectively avoiding heater to work all the time and produce.Simultaneously, make simply, production cost is low.
The refrigeration plant with above-mentioned refrigeration system of the embodiment of the present invention is below described.
The refrigeration system that comprises casing and above-described embodiment according to the refrigeration plant of the embodiment of the present invention.Wherein, be limited with at least one chamber in casing.Refrigeration system is used at least one the chamber refrigeration in casing.
Should be understood that the refrigeration plant in the embodiment of the present invention can be refrigerator, also can be other refrigeration plants such as refrigerator-freezer.
According to the refrigeration plant of the embodiment of the present invention, jointly control by heater and evaporimeter to refrigeration system, the potential safety hazard of effectively avoiding heater to work all the time and produce, security performance and the service life of improving refrigeration plant, simultaneously, low cost of manufacture.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is by claims and be equal to and limit.
Claims (4)
1. a refrigeration system, is characterized in that, comprising:
Compressor, the first terminals of described compressor are connected with the N utmost point of power supply, and the second terminals of described compressor are connected with the N utmost point of described power supply with inductance by resistance in parallel;
Heater, an end of described heater is connected with described the first switch unit, the other end of described heater respectively with the 3rd terminals of described compressor be connected switch unit and be connected, and the resistance of described heater is greater than the resistance of described compressor main winding;
The first switch unit, an end of described the first switch unit is connected with described heater, and the other end of described the first switch unit is connected with the L utmost point of power supply;
The second switch unit, an end of described the second switch unit respectively with described heater be connected the 3rd terminals of compressor and be connected, the other end of described the second switch unit is connected with the L utmost point of described power supply; With
Controller, described controller are connected with described the second switch unit with described the first switch unit respectively, are used for controlling the closed and disconnected of described the first switch unit and described the second switch unit.
2. refrigeration system according to claim 1, is characterized in that, described the first switch unit and described the second switch unit comprise relay and switch.
3. refrigeration system according to claim 1, is characterized in that, wherein,
When described the first switch unit closure, when described the second switch unit disconnects, described heater work, described compressor is not worked;
When described the second switch unit closure, when described the first switch unit disconnects, described compressor operating, described heater is not worked;
When closed and described the second switch unit was also closed when described the first switch unit, described heater was not worked, described compressor operating.
4. a refrigeration plant, is characterized in that, comprising:
Casing is limited with at least one chamber in described casing; With
Refrigeration system, described refrigeration system are the described refrigeration system of any one in claim 1-3, and described refrigeration system is used for described at least one chamber refrigeration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110271085 CN102353228B (en) | 2011-08-31 | 2011-08-31 | Refrigerating system and refrigeration equipment with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110271085 CN102353228B (en) | 2011-08-31 | 2011-08-31 | Refrigerating system and refrigeration equipment with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102353228A CN102353228A (en) | 2012-02-15 |
| CN102353228B true CN102353228B (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110271085 Active CN102353228B (en) | 2011-08-31 | 2011-08-31 | Refrigerating system and refrigeration equipment with same |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11199351B2 (en) * | 2017-05-10 | 2021-12-14 | Mitsubishi Electric Corporation | Air conditioner and method for controlling operation of air conditioner |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4332142A (en) * | 1980-10-14 | 1982-06-01 | General Electric Company | Household refrigerator including anti-sweat heater control circuit |
| US5421399A (en) * | 1992-03-17 | 1995-06-06 | Whirlpool Corporation | Cool/heat pump control circuit for a room air conditioner |
| JPH08261160A (en) * | 1995-03-27 | 1996-10-08 | Hitachi Ltd | Air conditioner |
| US6851270B2 (en) * | 2003-06-09 | 2005-02-08 | Texas Instruments Incorporated | Integrated refrigeration control |
| CN101217272A (en) * | 2007-01-05 | 2008-07-09 | 谭琦 | A defrosting timer |
| CN201311149Y (en) * | 2008-10-13 | 2009-09-16 | 合肥美菱股份有限公司 | Anti-condensation device for freezer |
| CN201476438U (en) * | 2009-06-10 | 2010-05-19 | 海信（北京）电器有限公司 | Refrigerator with electric heater with multi-level protection |
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2011
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| CN102353228A (en) | 2012-02-15 |
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| C56 | Change in the name or address of the patentee |
Owner name: HEFEI MIDEA REFRIGERATOR CO., LTD. Free format text: FORMER NAME: HEFEI MEDIA RONGSHIDA REFRIGERATOR CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 230601 Hefei Changjiang Road, Anhui, No. 669 Patentee after: Hefei Midea Refrigerator Co., Ltd. Patentee after: Hefei Hualing Co., Ltd. Address before: 230601 Hefei Changjiang Road, Anhui, No. 669 Patentee before: Hefei Media Rongshida Refrigerator Co., Ltd. Patentee before: Hefei Hualing Co., Ltd. |
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Effective date of registration: 20180207 Address after: 230601 Building No. 198, building No. 198, Mingzhu Avenue, Anhui high tech Zone, Anhui Patentee after: Hefei Midea Intelligent Technology Co., Ltd. Address before: 230601 Hefei Changjiang Road, Anhui, No. 669 Co-patentee before: Hefei Hualing Co., Ltd. Patentee before: Hefei Midea Refrigerator Co., Ltd. |
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| TR01 | Transfer of patent right |