CN205048778U - Refrigerating circulating system - Google Patents
Refrigerating circulating system Download PDFInfo
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- CN205048778U CN205048778U CN201520752551.3U CN201520752551U CN205048778U CN 205048778 U CN205048778 U CN 205048778U CN 201520752551 U CN201520752551 U CN 201520752551U CN 205048778 U CN205048778 U CN 205048778U
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- evaporation element
- defrosting
- magnetic valve
- evaporimeter
- evaporation
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Abstract
The utility model belongs to the technical field of the evaporimeter defrosting, a refrigerating circulating system is disclosed, include: connect in same closed -loop through the pipeline order: compressor, condenser and evaporation assembly, evaporation assembly includes first evaporation unit and second evaporation unit, first evaporation unit can be realized with second evaporation unit: normal operating, perhaps evaporation unit work, another switching of evaporating three kinds of operating modes of unit defrosting. The utility model discloses an adopt two sets of evaporation units, can realize the switching of three kinds of operating modes, utilize self structure to realize not shutting down the function of defrosting. This system is two evaporimeters to original evaporimeter average mark, and evaporator area does not increase, just increases partial pipeline and control flap, realizes not shutting down the defrosting, can realize continuous refrigeration during the defrosting, it can realize that the function of defrosting is realized to not extra consumed energy to the defrosting operation of evaporimeter to need not additionally to provide auxiliary assembly.
Description
Technical field
The utility model relates to evaporator defrost technical field, particularly a kind of cooling cycle system.
Background technology
Conventional compression formula refrigeration system is widely used in the showcase etc. in refrigerator car, miniature cold storage and shop and supermarket, in conventional compression formula refrigeration system running, when humid air stream is through evaporimeter, when fin temperature is lower than air dew point temperature, water vapour in air will be separated out, and on fin surface condensation, when fin temperature is lower than 0 DEG C, condensate water will form frost layer at fin surface.Frost is the porous type bulk materials be made up of ice crystal, and its thermal resistance apparent thickness difference is about 90 ~ 450 times of steel pipe.Along with the carrying out of process of refrigerastion, frost thickness and thermal conduction resistance increase gradually, thus reduce the heat transfer coefficient of evaporimeter, increase the resistance of air by finned-tube evaporator, reduce air mass flow, have a strong impact on the heat transfer effect of evaporimeter.And evaporimeter frosting can make the aisle spare between fin reduce, the air mass flow flowing through evaporimeter declines, and makes the heat transfer property of evaporimeter and degrading, may be formed further " frost is stifled ".Conventional compression formula cooling cycle system evaporator defrost mode mainly contains cuts off the defrosting of kind of refrigeration cycle formula, electrical heating type defrosting and the defrosting of hot gas formula.Wherein, cutting off the main shortcoming existed of kind of refrigeration cycle formula defrosting is that when defrosting, refrigeration system shuts down molten frost, and defrosting time is long.Although the main shortcoming existed of electrical heating type defrosting shortens defrosting time, adds additional the defrosting electricity charge.The main shortcoming existed of hot gas formula defrosting needs to install auxiliary equipment to prepare hot gas and extra consumed energy.
Utility model content
(1) technical problem that will solve
The technical problems to be solved in the utility model is: during for solving existing cooling cycle system evaporator defrost, needs the problem of shutting down defrosting or installation auxiliary device.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of cooling cycle system, comprise: be linked in sequence in same closed-loop path by pipeline: compressor, condenser and evaporative component, described evaporative component comprises the first evaporation element and the second evaporation element, described first evaporation element and the second evaporation element can realize: normally run, or evaporation element work, another evaporation element defrost the switching of three kinds of operating modes.
Wherein, described first evaporation element comprises sequential communication: the first capillary and the first evaporimeter, and the entrance of described first capillary is the incoming end of described first evaporation element; Described first capillary paralleling has the first magnetic valve; Described second evaporation element comprises sequential communication: the second capillary and the second evaporimeter, and the entrance of described second capillary is the incoming end of described second evaporation element; Described second capillary paralleling has the 4th magnetic valve.
Wherein, the output of described first evaporation element is communicated with the input of described second evaporation element by the second magnetic valve, and the output of described second evaporation element is communicated with the input of described first evaporation element by the 5th magnetic valve.
Wherein, on the branch road at described first evaporation element place and be positioned at the input of described first evaporation element, output correspondence is provided with the 7th magnetic valve and the 3rd magnetic valve; On the branch road at described second evaporation element place and be positioned at the input of described second evaporation element, output correspondence is provided with the 8th magnetic valve and the 6th magnetic valve.
Wherein, device for drying and filtering is communicated with between described condenser and described evaporative component.
Wherein, described first evaporimeter and the second evaporimeter place are equipped with fan.
(3) beneficial effect
Technique scheme tool has the following advantages: a kind of cooling cycle system of the utility model, by adopting two cover evaporation elements, can realize the switching of three kinds of operating modes, utilizes self structure to realize not shutting down the function of defrosting.This system is that original evaporimeter is equally divided into two evaporimeters, and evaporator area does not increase, and just increases part pipeline and by-pass valve control, realizes not shutting down defrosting, can realize continuous cooling during defrosting; The defrost operation that can realize evaporimeter without the need to additionally providing auxiliary equipment, extra consumed energy realizes the function of defrosting; For evaporimeter internal refrigeration storage agent heating defrosting, evenly, the impact of heat exchanger is less in defrosting; Avoid in defrost process and occur that heating and cooling effect makes the gap between evaporation tube and fin increase, the problem of the degradation of heat exchange performance of heat exchanger; There is the effect of certain recovery cold: owing to originally treating that defrosting evaporator surface coverage had certain thickness frost layer, and temperature is lower, in the middle of the cold-producing medium of temperature enter when the defrosting evaporator from condenser, with treat that the frost layer on defrosting evaporator surface carries out heat exchange, frost is melted gradually, and the cold-producing medium in corresponding evaporimeter is cooled, therefore, treat that defrosting evaporator carries out to a certain degree to cold-producing medium again excessively cold, can recovery section cold.
Accompanying drawing explanation
Fig. 1 is the structural representation of cooling cycle system described in the utility model;
Fig. 2 is the switch conditions of cooling cycle system described in the utility model each magnetic valve under three kinds of operating modes.
Wherein, the 1, first magnetic valve; 2, the second magnetic valve; 3, the 3rd magnetic valve; 4, the 4th magnetic valve; 5, the 5th magnetic valve; 6, the 6th magnetic valve; 7, the 7th magnetic valve; 8, the 8th magnetic valve; 9, the first evaporimeter; 10, the second evaporimeter; 11, compressor; 12, condenser; 13, device for drying and filtering; 14, the first capillary; 15, the second capillary.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described in further detail.Following examples for illustration of the utility model, but are not used for limiting scope of the present utility model.
In description of the present utility model, it should be noted that, except as otherwise noted, the implication of " multiple " is two or more; Term " on ", D score, "left", "right", " interior ", " outward ", " front end ", " rear end ", " head ", the orientation of the instruction such as " afterbody " or position relationship be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second ", " the 3rd " etc. only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, also it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, visual concrete condition understands the concrete meaning of above-mentioned term in the utility model.
As shown in Figure 1, the utility model discloses a kind of cooling cycle system, does not shut down online defrost function for realizing in refrigerative circle system; This cooling cycle system comprises: be linked in sequence in same closed-loop path by pipeline: compressor 11, condenser 12 and evaporative component, described evaporative component comprises the first evaporation element and the second evaporation element, described first evaporation element and the second evaporation element can realize: normally run, or evaporation element work, another evaporation element defrost the switching of three kinds of operating modes.
Because this cooling cycle system have employed two evaporation elements, first evaporation element and the second evaporation element parallel with one another, by switching the switching that can realize three kinds of operating modes: normally run, namely the first evaporation element and the second evaporation element all participate in the circulation of whole system with normal duty; First evaporation element defrosting, cold-producing medium now in loop is in heat release state through the first evaporation element, realize the defrost operation to the first evaporation element, but cold-producing medium is then in normal heat absorption state in the second evaporation element, ensure the normal circulation refrigeration of whole system, realize the function of not shutting down online defrosting; Second evaporation element defrosting, principle is similar to the first evaporation element defrosting operating condition, and just the operating mode of two evaporation elements is exchanged.
Concrete, described first evaporation element comprises sequential communication: the first capillary 14 and the first evaporimeter 9, and the entrance of described first capillary 14 is the incoming end of described first evaporation element; Described first capillary 14 is parallel with the first magnetic valve 1; Described second evaporation element comprises sequential communication: the second capillary 15 and the second evaporimeter 10, and the entrance of described second capillary 15 is the incoming end of described second evaporation element; Described second capillary 15 is parallel with the 4th magnetic valve 4.
For the first refrigeration unit, when normally working, cold-producing medium first by after the first capillary 14 step-down, then enters in the first evaporimeter 9 and absorbs heat, and finally gets back in compressor 11 and participates in circulation next time; When first evaporimeter 9 defrosts, condenser 12 high-pressure refrigerant out directly enters the first evaporimeter 9 through the first magnetic valve 1 and carries out heat release, realize the defrost operation to the first evaporimeter 9, meanwhile the second evaporation element still normally works, and the circulation of whole cooling cycle system can't be influenced; The structure of the second evaporimeter 10 is identical with the first evaporimeter 9, and operation principle repeats no more.
Further, the output of described first evaporation element is communicated with the input of described second evaporation element by the second magnetic valve 2, and the output of described second evaporation element is communicated with the input of described first evaporation element by the 5th magnetic valve 5.On the branch road at described first evaporation element place and be positioned at the input of described first evaporation element, output correspondence is provided with the 7th magnetic valve 7 and the 3rd magnetic valve 3; On the branch road at described second evaporation element place and be positioned at the input of described second evaporation element, output correspondence is provided with the 8th magnetic valve 8 and the 6th magnetic valve 6.Device for drying and filtering 13 is communicated with between described condenser 12 and described evaporative component.Described first evaporimeter 9 and the second evaporimeter 10 place are equipped with fan.
Below according to kind of the operating mode of three such as listed by Fig. 2, the operation principle of this cooling cycle system is described in detail:
1, accidental conditions: the 3rd magnetic valve 3, the 6th magnetic valve 6, the 7th magnetic valve 7, the 8th magnetic valve 8 are opened, remaining first magnetic valve 1, second magnetic valve 2, the 4th magnetic valve 4, the 5th magnetic valve 5 are closed; First evaporation element and the second evaporation element parallel running, simultaneously as the evaporative component of cooling cycle system.Cold-producing medium is in high-temperature high-pressure state after compressor 11 compresses, and enter condenser 12 condensation heat release, discharge a part of heat, the middle temperature high-pressure refrigerant drying filter 13 after heat release enters the first evaporation element and the second evaporation element respectively; For the first evaporation element, middle temperature high-pressure refrigerant enters the rear pressure drop of the first capillary 14, and temperature also declines thereupon, becomes the cold-producing medium of low-temp low-pressure; Low-temperature low-pressure refrigerant enters the first evaporimeter 9 and starts heat absorption, after heat absorption becomes the cold-producing medium of middle temperature low pressure, enters compressor 11 and participates in circulation next time; The operation principle of the second evaporation element is identical with the principle of the first evaporation element, repeats no more herein.
2, the first evaporimeter 9 is in defrosting operating condition: the first magnetic valve 1, second magnetic valve 2, the 6th magnetic valve 6, the 7th magnetic valve 7 are opened, and remaining 3rd magnetic valve 3, the 4th magnetic valve 4, the 5th magnetic valve 5, the 8th magnetic valve 8 are closed; Second evaporation element normally works.Cold-producing medium is in high-temperature high-pressure state after compressor 11 compresses, enter the rear condensation heat release of condenser 12, discharge a part of heat, middle temperature high-pressure refrigerant after heat release is after device for drying and filtering 13, successively through the 7th magnetic valve 7, first magnetic valve 1, first evaporimeter 9, second magnetic valve 2, second capillary 15, second evaporimeter 10, 6th magnetic valve 6 is got back in compressor 11, cold-producing medium is walked around the first capillary 14 and is directly entered the first evaporimeter 9 in the first evaporation element, the cold-producing medium of middle temperature high pressure is without step-down, by the temperature of cold-producing medium during the first evaporimeter 9 far above 0 degree Celsius, first evaporimeter 9 surface temperature raises, its surperficial frost layer is made to be heated by tube wall and melt rapidly, realize defrost function, after cold-producing medium flows out the first evaporimeter 9, pipeline through the second magnetic valve 2 place gets back to the input of the second evaporation element, then, after the second capillary 15 reducing pressure by regulating flow, enter the second evaporimeter 10 and absorb heat, become saturated gas enter compressor 11 participate in next time circulation.
After the first evaporimeter 9 defrosting mode terminates, by the connected state of switching solenoid valve, enter the second evaporimeter 10 defrosting operating condition.
3, the second evaporimeter 10 is in defrosting operating condition: the principle that this operation principle and the first evaporimeter 9 are in defrosting operating condition is similar, only the state of all magnetic valves need be carried out switching, that is: the 3rd magnetic valve 3, the 4th magnetic valve 4, the 5th magnetic valve 5, the 8th magnetic valve 8 switch to opening, and remaining first magnetic valve 1, second magnetic valve 2, the 6th magnetic valve 6, the 7th magnetic valve 7 switch to closed condition; Because the first evaporation element and the second evaporation element are set up in parallel, both structures are identical, so no longer repeat its operation principle herein.
After the first evaporimeter 9 and the second evaporimeter 10 all complete defrosting operating condition, switch above-mentioned magnetic valve, system comes back to accidental conditions.
As can be seen from the above embodiments, the utility model is by adopting double evaporators, eight magnetic valve connecting lines are set, by the combination of each electromagnetic valve switch state, this cooling cycle system can realize three kinds of operating modes: accidental conditions, the first evaporimeter 9 defrosting operating condition, the second evaporimeter 10 defrosting operating condition.This system is that original evaporimeter is equally divided into two evaporimeters, and evaporator area does not increase, and just increases part pipeline and by-pass valve control, realizes not shutting down defrosting, can realize continuous cooling during defrosting; The defrost operation that can realize evaporimeter without the need to additionally providing auxiliary equipment, extra consumed energy realizes the function of defrosting; For evaporimeter internal refrigeration storage agent heating defrosting, evenly, the impact of heat exchanger is less in defrosting; Avoid in defrost process and occur that heating and cooling effect makes the gap between evaporation tube and fin increase, the problem of the degradation of heat exchange performance of heat exchanger; There is the effect of certain recovery cold: owing to originally treating that defrosting evaporator surface coverage had certain thickness frost layer, and temperature is lower, in the middle of the cold-producing medium of temperature enter when the defrosting evaporator from condenser 12, with treat that the frost layer on defrosting evaporator surface carries out heat exchange, frost is melted gradually, and the cold-producing medium in corresponding evaporimeter is cooled, therefore, treat that defrosting evaporator carries out to a certain degree to cold-producing medium again excessively cold, can recovery section cold.
The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and replacement, these improve and replace and also should be considered as protection domain of the present utility model.
Claims (6)
1. a cooling cycle system, it is characterized in that, comprise: be linked in sequence in same closed-loop path by pipeline: compressor (11), condenser (12) and evaporative component, described evaporative component comprises the first evaporation element and the second evaporation element, described first evaporation element and the second evaporation element can realize: normally run, or evaporation element work, another evaporation element defrost the switching of three kinds of operating modes.
2. cooling cycle system as claimed in claim 1, it is characterized in that, described first evaporation element comprises sequential communication: the first capillary (14) and the first evaporimeter (9), and the entrance of described first capillary (14) is the incoming end of described first evaporation element; Described first capillary (14) is parallel with the first magnetic valve (1);
Described second evaporation element comprises sequential communication: the second capillary (15) and the second evaporimeter (10), and the entrance of described second capillary (15) is the incoming end of described second evaporation element; Described second capillary (15) is parallel with the 4th magnetic valve (4).
3. cooling cycle system as claimed in claim 2, it is characterized in that, the output of described first evaporation element is communicated with the input of described second evaporation element by the second magnetic valve (2), and the output of described second evaporation element is communicated with the input of described first evaporation element by the 5th magnetic valve (5).
4. cooling cycle system as claimed in claim 3, it is characterized in that, on the branch road at described first evaporation element place and be positioned at the input of described first evaporation element, output correspondence is provided with the 7th magnetic valve (7) and the 3rd magnetic valve (3); On the branch road at described second evaporation element place and be positioned at the input of described second evaporation element, output correspondence is provided with the 8th magnetic valve (8) and the 6th magnetic valve (6).
5. cooling cycle system as claimed in claim 1, is characterized in that, be communicated with device for drying and filtering (13) between described condenser (12) and described evaporative component.
6. cooling cycle system as claimed in claim 2, is characterized in that, described first evaporimeter (9) and the second evaporimeter (10) place are equipped with fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520752551.3U CN205048778U (en) | 2015-09-25 | 2015-09-25 | Refrigerating circulating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520752551.3U CN205048778U (en) | 2015-09-25 | 2015-09-25 | Refrigerating circulating system |
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| CN205048778U true CN205048778U (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520752551.3U Expired - Fee Related CN205048778U (en) | 2015-09-25 | 2015-09-25 | Refrigerating circulating system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135730A (en) * | 2015-09-25 | 2015-12-09 | 北京建筑大学 | Refrigerating circulatory system |
| CN105865130A (en) * | 2016-04-27 | 2016-08-17 | 青岛海尔股份有限公司 | Constant-temperature refrigerator and control method thereof |
| CN109073282A (en) * | 2016-04-18 | 2018-12-21 | 江森自控科技公司 | Condenser-reboiler system for refrigeration system |
-
2015
- 2015-09-25 CN CN201520752551.3U patent/CN205048778U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135730A (en) * | 2015-09-25 | 2015-12-09 | 北京建筑大学 | Refrigerating circulatory system |
| CN109073282A (en) * | 2016-04-18 | 2018-12-21 | 江森自控科技公司 | Condenser-reboiler system for refrigeration system |
| US10739041B2 (en) | 2016-04-18 | 2020-08-11 | Johnson Controls Technology Company | Selectively controllable condenser and evaporator system |
| US10767907B2 (en) | 2016-04-18 | 2020-09-08 | Johnson Controls Technology Company | Condenser evaporator system with a subcooler for refrigeration systems |
| CN109073282B (en) * | 2016-04-18 | 2021-06-01 | 江森自控科技公司 | Condenser-evaporator system for refrigeration system |
| CN105865130A (en) * | 2016-04-27 | 2016-08-17 | 青岛海尔股份有限公司 | Constant-temperature refrigerator and control method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 Termination date: 20160925 |