CN102706021A - Refrigeration device, refrigeration system and defrosting control method for refrigeration device - Google Patents
Refrigeration device, refrigeration system and defrosting control method for refrigeration device Download PDFInfo
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- CN102706021A CN102706021A CN2012102017830A CN201210201783A CN102706021A CN 102706021 A CN102706021 A CN 102706021A CN 2012102017830 A CN2012102017830 A CN 2012102017830A CN 201210201783 A CN201210201783 A CN 201210201783A CN 102706021 A CN102706021 A CN 102706021A
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- condenser
- refrigeration
- evaporimeter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0403—Refrigeration circuit bypassing means for the condenser
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/06—Several compression cycles arranged in parallel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
- F25B6/02—Compression machines, plants or systems, with several condenser circuits arranged in parallel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
- F25B6/04—Compression machines, plants or systems, with several condenser circuits arranged in series
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses a refrigeration device, a refrigeration system and a defrosting control method for the refrigeration device. The refrigeration system comprises a first refrigeration branch, a second refrigeration branch, a third condenser and a switching unit, wherein the first refrigeration branch comprises a first compressor, a first condenser and a first evaporator which are in serial connection; the second refrigeration branch comprises a second compressor, a second condenser and a second evaporator which are in serial connection; the third condenser is connected with the second refrigeration branch; the switching unit is provided with a first interface, a second interface and a third interface; and the switching unit is connected with the second refrigeration branch and is used for selectively causing a refrigerant in the second refrigeration branch to pass by the third condenser, so as to heat the first evaporator through the third condenser. No independently arranged electric heating defrosting device is required by the refrigeration system according to the embedment of the invention, the energy consumption is reduced and the safety of a defrosting process is increased.
Description
Technical field
The present invention relates to art of refrigeration units, in particular to the defrosting control method of a kind of refrigeration plant and refrigeration system and this refrigeration plant.
Background technology
Existing refrigerator, particularly air cooling type refrigerator adopt the mode of heating that evaporimeter is carried out defrost usually and handle, and common way is to adopt Electric heating to carry out defrost; For example near evaporimeter, install steel pipe heater or aluminum pipe heater or quartz tube heater etc. additional, carry out defrost, when adopting this defrost mode; Defrost power is bigger, and energy consumes more, and when apparatus failure takes place; Cause fire easily, have certain potential safety hazard.
Summary of the invention
The present invention is intended to solve at least one of technical problem that exists in the prior art.
In view of this, the present invention need provide a kind of refrigeration system, and this refrigeration system can be through condenser to the evaporimeter defrost, to improve defrost efficient, security when guaranteeing defrost.Further, the present invention need provide a kind of refrigeration plant with above-mentioned refrigeration system, and when defrost, defrost power is little, safety coefficient is high at least for said refrigeration plant.In addition, the present invention also need provide a kind of defrosting control method of this refrigeration plant.
According to a first aspect of the invention, a kind of refrigeration system is provided, has comprised: the first refrigeration branch road, the said first refrigeration branch road comprises first compressor, first condenser and first evaporimeter of series connection; The second refrigeration branch road, the said second refrigeration branch road comprises second compressor, second condenser and second evaporimeter of series connection; The 3rd condenser, said the 3rd condenser are connected in the said second refrigeration branch road; Switch unit, said switch unit are connected in the said second refrigeration branch road, the cold-producing medium that is used for optionally making the said second refrigeration branch road through said the 3rd condenser so that heat said first evaporimeter through said the 3rd condenser.
Refrigeration system when needs carry out defrost to first evaporimeter, can be passed through the operation switch unit, so that cold-producing medium is through the 3rd condenser according to an embodiment of the invention.Thus, the heat energy that can utilize the 3rd condenser outwards to transmit is to the first evaporimeter defrost.Adopt this defrost mode, do not need the electrical heating defrosting device is set separately the security that has reduced energy resource consumption, improved defrost process.Simultaneously,, can also reduce the temperature of the cold-producing medium of the 3rd condenser of flowing through, improve the operating efficiency of the second refrigeration branch road owing to adopt the 3rd condenser to the first evaporimeter defrost.Therefore, refrigeration system has higher operating efficiency and defrost efficient according to an embodiment of the invention.
According to one embodiment of present invention; Said switch unit has first to the 3rd interface; Said the 3rd condenser is parallelly connected with said second condenser, and first interface of said switch unit links to each other with the outlet of said second compressor and second the linking to each other with the inlet of the 3rd condenser with said second respectively with the 3rd interface of said switch unit.
According to one embodiment of present invention; Said switch unit first interface link to each other with the outlet of said second condenser; Second interface of said switch unit links to each other with the inlet of said the 3rd condenser, and the 3rd interface of said switch unit links to each other with the outlet of said the 3rd condenser and the inlet of said second evaporimeter.
According to one embodiment of present invention; First interface of said switch unit links to each other with the outlet of said second compressor; Second interface of said switch unit links to each other with the inlet of said the 3rd condenser, and the 3rd interface of said switch unit links to each other with the inlet of the outlet of said the 3rd condenser and said second condenser.
According to one embodiment of present invention, said switch unit is a transfer valve.
According to one embodiment of present invention, said transfer valve is a magnetic valve.
According to one embodiment of present invention; Refrigeration system also comprises the temperature sensor of the temperature that is used to detect said first evaporimeter; Wherein when the detected temperature of said temperature sensor is lower than first predetermined temperature said switch unit make the cold-producing medium of said second refrigeration in the branch road through said the 3rd condenser heating said first evaporimeter, and said switch unit makes said second refrigerant bypass of freezing in the branch road cross said the 3rd condenser to stop to heat said first evaporimeter when the detected temperature of said temperature sensor is higher than second predetermined temperature.
According to one embodiment of present invention; Refrigeration system also comprises the white quantity sensor that is used to detect the frost amount on said first evaporimeter; Wherein when the detected frost amount of said white quantity sensor during greater than the first predetermined frost amount said switch unit make cold-producing medium in the said second refrigeration branch road through said the 3rd condenser heating said first evaporimeter, and said switch unit makes said second refrigerant bypass of freezing in the branch road cross said the 3rd condenser to stop to heat said first evaporimeter when the detected frost amount of said white quantity sensor is less than the second predetermined frost amount.
According to one embodiment of present invention, the contiguous said first evaporimeter setting of said the 3rd condenser.
According to one embodiment of present invention, said the 3rd condenser is a coiled tube condenser, and the coil pipe of said the 3rd condenser is wrapped on said first evaporimeter.
According to one embodiment of present invention, said the 3rd condenser is close to the said first evaporimeter setting.
According to a second aspect of the invention, a kind of refrigeration plant is provided, has comprised: casing, said casing have chamber between first and second refrigeration; Chamber door, said chamber door are connected with said casing to open and close chamber between said refrigeration; And refrigeration system, said refrigeration system is located in the said casing and is according to the described refrigeration system of the above embodiment of the present invention, and the first and second refrigeration branch roads of said refrigeration system are respectively applied for chamber refrigeration between said first and second refrigeration.
Refrigeration plant according to the embodiment of the invention; Through being set, the first refrigeration branch road and the second refrigeration branch road can utilize the 3rd condenser that is connected in the second refrigeration branch road that first evaporimeter in the first refrigeration branch road is carried out the defrost processing; Adopt this defrost mode; Do not need the electrical heating defrosting device is set separately the security that has reduced energy resource consumption, improved defrost process.Simultaneously,, can also reduce the temperature of the cold-producing medium of the 3rd condenser of flowing through, improve the operating efficiency of the second refrigeration branch road owing to adopt the 3rd condenser to the first evaporimeter defrost.Therefore, refrigeration system has higher operating efficiency and defrost efficient according to an embodiment of the invention.
According to one embodiment of present invention, the chamber is a refrigerating chamber between said first refrigeration, and the chamber is a refrigerating chamber between said second refrigeration.
According to a third aspect of the invention we, a kind of defrosting control method of refrigeration plant is provided, has may further comprise the steps:
A) judge whether said first evaporimeter needs defrost; B) when said first evaporimeter needs defrost, thereby said switch unit makes the cold-producing medium in the said second refrigeration branch road carry out defrost to heat said first evaporimeter to first evaporimeter through said the 3rd condenser; C) when said first evaporimeter does not need defrost, said switch unit makes the refrigerant bypass in the said second refrigeration branch road cross said first evaporimeter to stop the said first evaporimeter defrost.
Defrosting control method according to the refrigeration plant of the embodiment of the invention can utilize the 3rd condenser to extraradial heat energy, to the first evaporimeter defrost.Adopt this defrost mode, do not need the electrical heating defrosting device is set separately the security that has reduced energy resource consumption, improved defrost process.Simultaneously,, can also reduce the temperature of the cold-producing medium of the 3rd condenser of flowing through, improve the operating efficiency of the second refrigeration branch road owing to adopt the 3rd condenser to the first evaporimeter defrost.Therefore, refrigeration system has higher operating efficiency and defrost efficient according to an embodiment of the invention.
According to one embodiment of present invention, in step a), judge through temperature that detects said first evaporimeter and/or the frost amount that detects on said first evaporimeter whether said first evaporimeter needs defrost.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage obviously with are easily understood becoming the description of embodiment from combining figs, wherein:
Fig. 1 has shown the structural representation of refrigeration system according to an embodiment of the invention;
Fig. 2 has shown the structural representation of refrigeration system in accordance with another embodiment of the present invention;
Fig. 3 has shown the structural representation of refrigeration system according to still a further embodiment;
Fig. 4 has shown the structural representation of refrigeration system according to an embodiment of the invention; With
Fig. 5 has shown the flow chart of the defrosting control method of refrigeration plant according to an embodiment of the invention.
The specific embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention; It will be appreciated that; The orientation of indications such as term " " center ", " vertically ", " laterally ", " on ", D score, " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward " or position relation are for based on orientation shown in the drawings or position relation; only be to describe with simplifying for the ease of describing the present invention; rather than the device or the element of indication or hint indication must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " only are used to describe purpose, and can not be interpreted as indication or hint relative importance.
In description of the invention, need to prove that only if clear and definite regulation and qualification are arranged in addition, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be to be fixedly connected, also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can link to each other indirectly through intermediary, can be the connection of two element internals.For those of ordinary skill in the art, can concrete condition understand above-mentioned term concrete implication in the present invention.
Below, at first the refrigeration system according to the embodiment of the invention is described with reference to figure 1-3.
Shown in Fig. 1-3, refrigeration system according to an embodiment of the invention comprises: the first refrigeration branch road 10, second refrigeration branch road 20, the 3rd condenser 30 and the switch unit 40.
Particularly, the first refrigeration branch road 10 comprises first compressor 11, first condenser 12 and first evaporimeter 13 of series connection.
The second refrigeration branch road 20 comprises second compressor 21, second condenser 22 and second evaporimeter 23 of series connection.
Need to prove that the first refrigeration branch road 10 and second branch road 20 that freezes can be separate refrigerating circuit, thereby can freeze to chamber between different refrigeration respectively.
The 3rd condenser 30 can be connected in the second refrigeration branch road 20.In other words, in the second refrigeration branch road 20, also be connected with the 3rd condenser 30.
Refrigeration system when needs carry out defrost to first evaporimeter 13, can be passed through operation switch unit 40, so that cold-producing medium is through the 3rd condenser 30 according to an embodiment of the invention.Thus, can utilize the 3rd condenser 30, to 13 defrosts of first evaporimeter to extraradial heat energy.Adopt this defrost mode, do not need the electrical heating defrosting device is set separately the security that has reduced energy resource consumption, improved defrost process.Simultaneously,, can also reduce the temperature of the cold-producing medium of the 3rd condenser 30 of flowing through, improve the operating efficiency of the second refrigeration branch road owing to adopt 30 pairs first evaporimeter 13 defrosts of the 3rd condenser.Therefore, refrigeration system has higher operating efficiency and defrost efficient according to an embodiment of the invention.
As shown in Figure 1; According to one embodiment of present invention; Switch unit 40 has first interface 41, second interface 42 and the 3rd interface 43; The 3rd condenser 30 is parallelly connected with second condenser 22, and first interface 41 of switch unit 40 links to each other with the outlet 211 of second compressor 21 and second interface 42 of switch unit 40 links to each other with the inlet of second condenser 22 and the 3rd condenser 30 respectively with the 3rd interface 43.Thus, can realize control to second condenser 22 and the 3rd condenser 30 duties.
Need to prove, can select second condenser 22 and the 3rd condenser 30 are connected in the second refrigeration branch road through second interface 42 and 43 switchings of the 3rd interface of control switch unit 40 (be transfer valve for example, be preferably battery valve).For example, open first interface 41 and second interface 42, close the 3rd interface 43, second condenser 22 is connected in the second refrigeration branch road 20.Open first interface 41 and the 3rd interface 43, close second interface 42, the 3rd condenser 30 is connected in the second refrigeration branch road 20, the heat that this moment the 3rd, condenser 30 produced can be to 13 defrosts of first evaporimeter.
As shown in Figure 2; According to another embodiment of the invention; First interface 41 of switch unit 40 links to each other with the outlet of second condenser 22; Second interface 42 of switch unit 40 links to each other with the inlet of the 3rd condenser 30, and the 3rd interface 43 of switch unit 40 links to each other with the outlet of the 3rd condenser 30 and the inlet of second evaporimeter 23.Thus, can select second condenser 22 and the 3rd condenser 30 are connected in the second refrigeration branch road 20 through second interface 42 and 43 switchings of the 3rd interface of control switch unit 40.When second condenser 22 is connected in the second refrigeration branch road 20; The second refrigeration branch road 20 normally freezes; When the 3rd condenser 30 was connected in the second refrigeration branch road 20, the second refrigeration branch road 20 can freeze normally, and can also utilize first evaporimeter 13 in 30 pairs first refrigeration of the 3rd condenser branch road 10 to carry out defrost; Thus, improved the refrigerating efficiency of refrigeration system.
Need to prove; As shown in Figure 4; Can be connected with first capillary 91 at the first refrigeration branch road 10; In the second refrigeration branch road 20, can be connected with second capillary, 92, the first capillaries 91 and can be connected between first condenser 12 and first evaporimeter 13, second capillary 92 can be connected between second condenser 22 and the 3rd condenser 30 and second evaporimeter 23.And first capillary 91 and second capillary 92 also can be connected in series the drying tube (not shown) respectively.Thus, can improve the refrigerating efficiency of refrigerator.In second refrigeration 20, can be provided with first check valve 101 and second check valve 102; First check valve 101 can be connected between second cold your device 22 and second capillary 92, and second check valve 102 can be connected between the 3rd condenser 30 and second capillary 92.Thus, can, one of second condenser 22 and the 3rd condenser 30 make the 20 unidirectional conductings of the second refrigeration branch road when being connected in the second refrigeration branch road 20.
As shown in Figure 3; According to still a further embodiment; First interface 41 of switch unit 40 links to each other with the outlet of second compressor 21; Second interface 42 of switch unit 40 links to each other with the inlet of the 3rd condenser 30, and the 3rd interface 43 of switch unit 40 links to each other with the outlet of the 3rd condenser 30 and the inlet of second condenser 22.Thus, can select second condenser 22 and the 3rd condenser 30 are connected in the second refrigeration branch road 20 through second interface 42 and 43 switchings of the 3rd interface of control switch unit 40.When second condenser 22 is connected in the second refrigeration branch road 20; The second refrigeration branch road 20 normally freezes; When the 3rd condenser 30 was connected in the second refrigeration branch road 20, the second refrigeration branch road 20 can freeze normally, and can also utilize first evaporimeter 13 in 30 pairs first refrigeration of the 3rd condenser branch road 10 to carry out defrost; Thus, improved the refrigerating efficiency of refrigeration system.
According to one embodiment of present invention; Refrigeration system can also comprise the temperature sensor (not shown) of the temperature that is used to detect first evaporimeter 13; Wherein when the detected temperature of temperature sensor is lower than first predetermined temperature switch unit 40 make the cold-producing medium of second refrigeration in the branch road 20 through the 3rd condenser 30 heating first evaporimeter 13, and switch unit 40 makes second refrigerant bypass of freezing in the branch road 20 cross the 3rd condenser 30 to stop to heat first evaporimeter 13 when the detected temperature of temperature sensor is higher than second predetermined temperature.Thus, can control defrost through judging temperature to first evaporimeter 13, can be to the 13 timely defrosts of first evaporimeter, to improve the operating efficiency of first evaporimeter 13.
According to one embodiment of present invention; Refrigeration system can also comprise the white quantity sensor (not shown) that is used to detect the frost amount on first evaporimeter 13; Wherein when the detected frost amount of white quantity sensor during greater than the first predetermined frost amount switch unit 40 make cold-producing medium in the second refrigeration branch road 20 through the 3rd condenser 30 heating said first evaporimeter 13, and switch unit 40 makes second refrigerant bypass of freezing in the branch road 20 cross the 3rd condenser 30 to stop to heat first evaporimeter 13 when the detected frost amount of white quantity sensor is less than the second predetermined frost and measures.Thus,, optionally carry out the defrost operation, can improve the operating efficiency of refrigeration system, and can promote the defrost effect through detection to the frost amount of first evaporimeter 13.
According to one embodiment of present invention, the 3rd condenser 30 can be close to 13 settings of first evaporimeter.Thus, can be better with heat transferred first evaporimeter of the 3rd condenser 30, during to 13 defrosts of first evaporimeter, to realize defrost to first evaporimeter 13 at needs.
Preferably, the 3rd condenser 30 can be coiled tube condenser, and the coil pipe of the 3rd condenser 30 is wrapped on first evaporimeter 13.Thus, the coil pipe that can make full use of the 3rd condenser 30 heats up to first evaporimeter 13, with to 13 defrosts of first evaporimeter.Alternatively, the 3rd condenser 30 also can be close to first evaporimeter 13 and be provided with, more efficiently first evaporimeter 13 is carried out defrost.
With reference to Fig. 1-3 course of work according to the refrigeration system of the embodiment of the invention is described below.
Under refrigeration system was in normal operating conditions, second condenser 22 was connected in the second refrigeration branch road 20, and the 3rd condenser 30 and the second refrigeration branch road 20 break off.At this moment, the first refrigeration branch road 10 and the second refrigeration branch road 20 normally freeze.
In the time of need be to 13 defrosts of first evaporimeter, the 3rd condenser 30 be connected in the second refrigeration branch road 20, second condenser 22 and 20 disconnections of the second refrigeration branch road, the 3rd condenser 30 utilize self to extraradial heat to 13 defrosts of first evaporimeter.In the defrost process, the first refrigeration branch road 10 can quit work, and the second refrigeration branch road 20 can be in normal operating conditions.
Below, the refrigeration plant according to the embodiment of the invention is described.
The refrigeration plant (not shown) comprises: casing, chamber door and refrigeration system according to an embodiment of the invention.
Particularly, casing can have chamber between first and second refrigeration.For example, the chamber can be refrigerating chamber between first refrigeration, and the chamber can be refrigerating chamber between second refrigeration.
Chamber door is connected with casing to open and close chamber between refrigeration.
Refrigeration system is located in the casing and is according to the described refrigeration system of the above embodiment of the present invention, and the first refrigeration branch road 10 of refrigeration system and the second refrigeration branch road 20 are respectively applied for and are freezed in chamber between the chamber between first refrigeration and second refrigeration.
Refrigeration plant according to the embodiment of the invention; Through being set, the first refrigeration branch road 10 and the second refrigeration branch road 20 can utilize first evaporimeter 13 in 30 pairs first refrigeration of the 3rd condenser branch road 10 that is connected in the second refrigeration branch road 20 to carry out the defrost processing; Adopt this defrost mode; Do not need the electrical heating defrosting device is set separately the security that has reduced energy resource consumption, improved defrost process.Simultaneously,, can also reduce the temperature of the cold-producing medium of the 3rd condenser 30 of flowing through, improve the operating efficiency of the second refrigeration branch road owing to adopt 30 pairs first evaporimeter 13 defrosts of the 3rd condenser.Therefore, refrigeration system has higher operating efficiency and defrost efficient according to an embodiment of the invention.
Below, in conjunction with Fig. 5 the defrosting control method according to the described refrigeration plant of embodiment is described.
As shown in Figure 5, the defrosting control method according to the described refrigeration plant of embodiments of the invention may further comprise the steps:
A) judge whether first evaporimeter needs defrost (S10).
For example, can carry out indirect detection or directly detection to the frost amount of first evaporimeter through temperature sensor or defrosting sensor.
In one embodiment of the invention, for example, judge through temperature that detects said first evaporimeter and/or the frost amount that detects on said first evaporimeter whether said first evaporimeter needs defrost.Thus, can improve defrost efficient.
B) when said first evaporimeter needs defrost, thereby said switch unit makes the cold-producing medium in the said second refrigeration branch road carry out defrost (S20) to heat said first evaporimeter to first evaporimeter through said the 3rd condenser.
C) when said first evaporimeter does not need defrost; For example; Judge through temperature sensor or defrosting sensor, when not needing defrost, said switch unit makes the refrigerant bypass in the said second refrigeration branch road cross said first evaporimeter to stop the said first evaporimeter defrost (S30).
Defrosting control method according to the refrigeration plant of the embodiment of the invention can utilize the 3rd condenser 30 to extraradial heat energy, to 13 defrosts of first evaporimeter.Adopt this defrost mode, do not need the electrical heating defrosting device is set separately the security that has reduced energy resource consumption, improved defrost process.Simultaneously,, can also reduce the temperature of the cold-producing medium of the 3rd condenser 30 of flowing through, improve the operating efficiency of the second refrigeration branch road owing to adopt 30 pairs first evaporimeter 13 defrosts of the 3rd condenser.Therefore, refrigeration system has higher operating efficiency and defrost efficient according to an embodiment of the invention.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described embodiments of the invention; Those having ordinary skill in the art will appreciate that; Under the situation that does not break away from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited claim and equivalent thereof.
Claims (15)
1. a refrigeration system is characterized in that, comprising:
The first refrigeration branch road, the said first refrigeration branch road comprises first compressor, first condenser and first evaporimeter of series connection;
The second refrigeration branch road, the said second refrigeration branch road comprises second compressor, second condenser and second evaporimeter of series connection;
The 3rd condenser, said the 3rd condenser are connected in the said second refrigeration branch road; With
Switch unit, said switch unit are connected in the said second refrigeration branch road, the cold-producing medium that is used for optionally making the said second refrigeration branch road through said the 3rd condenser so that heat said first evaporimeter through said the 3rd condenser.
2. refrigeration system according to claim 1; It is characterized in that; Said switch unit has first to the 3rd interface; Said the 3rd condenser is parallelly connected with said second condenser, and first interface of said switch unit links to each other with the outlet of said second compressor and second the linking to each other with the inlet of the 3rd condenser with said second respectively with the 3rd interface of said switch unit.
3. refrigeration system according to claim 1; It is characterized in that; Said switch unit first interface link to each other with the outlet of said second condenser; Second interface of said switch unit links to each other with the inlet of said the 3rd condenser, and the 3rd interface of said switch unit links to each other with the outlet of said the 3rd condenser and the inlet of said second evaporimeter.
4. refrigeration system according to claim 1; It is characterized in that; First interface of said switch unit links to each other with the outlet of said second compressor; Second interface of said switch unit links to each other with the inlet of said the 3rd condenser, and the 3rd interface of said switch unit links to each other with the inlet of the outlet of said the 3rd condenser and said second condenser.
5. refrigeration system according to claim 1 is characterized in that, said switch unit is a transfer valve.
6. refrigeration system according to claim 5 is characterized in that, said transfer valve is a magnetic valve.
7. refrigeration system according to claim 1; It is characterized in that; The temperature sensor that also comprises the temperature that is used to detect said first evaporimeter; Wherein when the detected temperature of said temperature sensor is lower than first predetermined temperature said switch unit make the cold-producing medium of said second refrigeration in the branch road through said the 3rd condenser heating said first evaporimeter, and said switch unit makes said second refrigerant bypass of freezing in the branch road cross said the 3rd condenser to stop to heat said first evaporimeter when the detected temperature of said temperature sensor is higher than second predetermined temperature.
8. refrigeration system according to claim 1; It is characterized in that; Also comprise the white quantity sensor that is used to detect the frost amount on said first evaporimeter; Wherein when the detected frost amount of said white quantity sensor during greater than the first predetermined frost amount said switch unit make cold-producing medium in the said second refrigeration branch road through said the 3rd condenser heating said first evaporimeter, and said switch unit makes said second refrigerant bypass of freezing in the branch road cross said the 3rd condenser to stop to heat said first evaporimeter when the detected frost amount of said white quantity sensor is less than the second predetermined frost amount.
9. according to each described refrigeration system among the claim 1-8, it is characterized in that the contiguous said first evaporimeter setting of said the 3rd condenser.
10. refrigeration system according to claim 9 is characterized in that, said the 3rd condenser is a coiled tube condenser, and the coil pipe of said the 3rd condenser is wrapped on said first evaporimeter.
11. refrigeration system according to claim 9 is characterized in that, said the 3rd condenser is close to the said first evaporimeter setting.
12. a refrigeration plant is characterized in that, comprising:
Casing, said casing have chamber between first and second refrigeration;
Chamber door, said chamber door are connected with said casing to open and close chamber between said refrigeration; With
Refrigeration system, said refrigeration system are located in the said casing and are according to each described refrigeration system among the claim 1-11, and the first and second refrigeration branch roads of said refrigeration system are respectively applied for chamber refrigeration between said first and second refrigeration.
13. refrigeration plant according to claim 12 is characterized in that, the chamber is a refrigerating chamber between said first refrigeration, and the chamber is a refrigerating chamber between said second refrigeration.
14. the defrosting control method according to claim 12 or 13 described refrigeration plants, its characteristic is being, is may further comprise the steps:
A) judge whether said first evaporimeter needs defrost;
B) when said first evaporimeter needs defrost, thereby said switch unit makes the cold-producing medium in the said second refrigeration branch road carry out defrost to heat said first evaporimeter to first evaporimeter through said the 3rd condenser;
C) when said first evaporimeter does not need defrost, said switch unit makes the refrigerant bypass in the said second refrigeration branch road cross said first evaporimeter to stop the said first evaporimeter defrost.
15. defrosting control method according to claim 14 is characterized in that, in step a), judges through temperature that detects said first evaporimeter and/or the frost amount that detects on said first evaporimeter whether said first evaporimeter needs defrost.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102017830A CN102706021A (en) | 2012-06-18 | 2012-06-18 | Refrigeration device, refrigeration system and defrosting control method for refrigeration device |
| PCT/CN2012/077343 WO2013189076A1 (en) | 2012-06-18 | 2012-06-21 | Refrigeration device, refrigeration system and defrosting control method for refrigeration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102017830A CN102706021A (en) | 2012-06-18 | 2012-06-18 | Refrigeration device, refrigeration system and defrosting control method for refrigeration device |
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| CN102706021A true CN102706021A (en) | 2012-10-03 |
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| CN2012102017830A Pending CN102706021A (en) | 2012-06-18 | 2012-06-18 | Refrigeration device, refrigeration system and defrosting control method for refrigeration device |
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| Country | Link |
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| CN (1) | CN102706021A (en) |
| WO (1) | WO2013189076A1 (en) |
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| CN102980351A (en) * | 2012-12-28 | 2013-03-20 | 合肥美的荣事达电冰箱有限公司 | Refrigerator and refrigeration system component thereof |
| CN102997477A (en) * | 2012-12-28 | 2013-03-27 | 合肥美的荣事达电冰箱有限公司 | Refrigerator and refrigeration system of refrigerator |
| CN103017427A (en) * | 2013-01-10 | 2013-04-03 | 合肥美的荣事达电冰箱有限公司 | Refrigerator and refrigerating system thereof |
| CN103267392A (en) * | 2013-06-07 | 2013-08-28 | 合肥美的电冰箱有限公司 | Refrigerating system and refrigerator with refrigerating system |
| CN103335439A (en) * | 2013-07-18 | 2013-10-02 | 合肥美的电冰箱有限公司 | Refrigeration system |
| CN105605839A (en) * | 2015-12-30 | 2016-05-25 | 青岛海尔股份有限公司 | Refrigerator and defrosting system thereof |
| CN107965955A (en) * | 2017-11-22 | 2018-04-27 | 合肥华凌股份有限公司 | Frost-removal structure and its operating method and refrigeration plant |
| CN110307683A (en) * | 2018-03-20 | 2019-10-08 | 东芝生活电器株式会社 | Refrigerator |
| WO2021057137A1 (en) * | 2019-09-23 | 2021-04-01 | 珠海格力电器股份有限公司 | Refrigeration system and refrigerated storage |
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| KR102480701B1 (en) * | 2015-07-28 | 2022-12-23 | 엘지전자 주식회사 | Refrigerator |
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| CN102997477A (en) * | 2012-12-28 | 2013-03-27 | 合肥美的荣事达电冰箱有限公司 | Refrigerator and refrigeration system of refrigerator |
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| CN105605839A (en) * | 2015-12-30 | 2016-05-25 | 青岛海尔股份有限公司 | Refrigerator and defrosting system thereof |
| CN107965955A (en) * | 2017-11-22 | 2018-04-27 | 合肥华凌股份有限公司 | Frost-removal structure and its operating method and refrigeration plant |
| CN110307683A (en) * | 2018-03-20 | 2019-10-08 | 东芝生活电器株式会社 | Refrigerator |
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| WO2021057137A1 (en) * | 2019-09-23 | 2021-04-01 | 珠海格力电器股份有限公司 | Refrigeration system and refrigerated storage |
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| Publication number | Publication date |
|---|---|
| WO2013189076A1 (en) | 2013-12-27 |
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