CN201463433U - Hot air defroster for multi-set parallel evaporator refrigeration system - Google Patents
Hot air defroster for multi-set parallel evaporator refrigeration system Download PDFInfo
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- CN201463433U CN201463433U CN2009201326934U CN200920132693U CN201463433U CN 201463433 U CN201463433 U CN 201463433U CN 2009201326934 U CN2009201326934 U CN 2009201326934U CN 200920132693 U CN200920132693 U CN 200920132693U CN 201463433 U CN201463433 U CN 201463433U
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- parallel
- evaporimeter
- defrosting
- compressor
- hot gas
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Abstract
The utility model discloses a hot air defroster for a multi-set parallel evaporator refrigeration system. On the outlet pipeline of a compressor (1), a hot air header (7) is arranged in parallel with a condenser (4), and is respectively communicated with the outlet of each set of evaporator; at the inlet of each set of evaporator, a one-way valve (19) for discharging liquid is arranged in parallel with an expansion valve (18), a defrosting recovery header (6) is arranged in parallel with the outlets of the one-way valves and a liquid supply header (5), and the recovered liquid returns to the compressor (1) via an expansion valve (11) and a heat exchanger (9); and electromagnetic valves (13, 14, 15, 16) for controlling the flow directions of the evaporators are arranged at the inlets and outlets of the evaporators. The utility model has the following advantages that: the defrosting speed is high, temperature fluctuation on other evaporators is small, the 'liquid slugging' of the compressor is prevented, and system power consumption is low.
Description
Technical field
The utility model relates to refrigeration system, relates in particular to a kind of hot gas defrosting device that is used for many groups evaporimeter refrigeration system in parallel.
Background technology
Refrigeration system needs regularly to remove the frost layer on the evaporimeter, and the hot gas defrost is wherein a kind of method, and the high-temperature exhaust air that is about to compressor imports the purpose that reaches quick defrost in the evaporimeter of intending defrost.
Existing hot gas defrost mainly contains following two kinds of methods:
Method one is that the high-temperature gas that produces during with compressor operating imports groups in many groups evaporimeter in parallel, and in to this group evaporimeter defrost, high-temperature steam is condensed into liquid, and this liquid is provided directly to another group evaporimeter and evaporates.The shortcoming of this method is that the refrigerant liquid of evaporimeter defrosting generation is mobile not smooth, and defrosting finishes the possible liquid storage of finisher, when this group evaporimeter recovery is freezed, might produce " liquid hammer " phenomenon to compressor.
Method two is to utilize pressure-regulating valve that the pressure of liquid reservoir in the system is reduced, and goes so that the liquid that produces in the defrost process can be back in the system.The shortcoming of this method is owing to liquid reservoir pressure in the system is artificially reduced, and the compressor power consumption is strengthened.In addition, in defrost process, the refrigerating evaporator of other group can produce bigger temperature fluctuation.
The utility model content
The purpose of this utility model is to overcome above-mentioned problems of the prior art, proposes the hot gas defrosting device in a kind of many groups evaporimeter refrigeration system in parallel, and this device is applicable to the supermarket refrigerator display case, has the freezer of many groups evaporimeter in parallel.
The technical solution adopted in the utility model is the hot gas defrosting device of a kind of evaporimeter refrigeration system of design, this device comprises: at the outlet conduit of compressor, be arranged in parallel the hot gas collector with condenser, this hot gas collector is communicated with the outlet of each group evaporimeter respectively, at the porch of each group evaporimeter and the check valve that expansion valve is arranged in parallel tapping, this check valve outlet has been arranged in parallel defrosting with the feed flow collector and has reclaimed collector, defrosting liquid is through expansion valve, heat exchanger returns compressor, and each group evaporator inlet and outlet are provided with the magnetic valve that the control evaporimeter flows to.
The heat exchange between back-steam and the condensed fluid that is used to defrost of described heat exchanger can be adopted plate type heat exchanger, finned heat exchanger, coil exchanger, or the heat exchanger of other form.
Compared with prior art, the utlity model has following advantage:
1, the high-temperature high-pressure refrigerant steam that utilizes compressor to discharge is given the evaporimeter defrosting that needs defrost, melts the frost on the evaporator fin rapidly, need not the electric heating tube that uses traditional defrost to use, saves electric energy.
2, adopt many groups evaporimeter grouping in parallel defrost form, part group evaporimeter refrigeration, the defrost of part group evaporimeter, temperature effect is very little each other, helps the preservation of food, and the refrigerating chamber cooling is fast when freezing once more, the compressor power consumption is little, and energy-saving effect is obvious.
3, the defrosting condensate liquid that produces after the defrost carried out cold to the liquid stream in the system by heat exchanger, cold is fully utilized, and system energy efficiency is improved.
Description of drawings
Below in conjunction with accompanying drawing and preferred embodiment the utility model is described in detail, wherein:
Fig. 1 is the flow chart of the utility model one preferred embodiment.
The specific embodiment
A kind of hot gas defrosting device with many groups evaporimeter refrigeration system in parallel of the utility model design is applied in the cooling cycle system of two groups with the evaporimeter of parallel way setting at least.As shown in Figure 1, this cooling cycle system comprises the compressor 1, oil eliminator 2, condenser 4, liquid reservoir 3, heat exchanger 9, feed flow collector 5, magnetic valve 17, the expansion valve 18 that are connected successively by pipeline, organizes evaporimeter 20,21,22 and return-air collector 8 more.
The hot gas defrosting device of the utility model design comprises: at the compressor outlet pipeline, be arranged in parallel hot gas collector 7, this hot gas collector with condenser 4 and be communicated with the outlet of each group evaporimeter respectively; At the check valve 19 that porch and magnetic valve 17 and the expansion valve 18 of each group evaporimeter is arranged in parallel tapping, these check valve 19 outlets and feed flow collector 5 are arranged in parallel recovery collector 6, recover 10, magnetic valve 12, expansion valve 11, withdrawal liquid and return compressor 1 through heat exchanger 9; Each group evaporator inlet and outlet are provided with the magnetic valve of independently being controlled by the PLC controller 13,14,15 and 16, and these solenoid control evaporimeters freeze, or the flow direction of liquid or gas in the defrosting process.Between recovery collector 6 and expansion valve 11, be provided with recover 10 and magnetic valve 12.Be provided with a heat exchanger 9 after the expansion valve 11, this heat exchanger is used for the heat exchange between defrosting back-steam and the condensed fluid.
The utility model is when normal process of refrigerastion, PLC controller control magnetic valve 13 and 16 is opened, defrosting magnetic valve 14,15 cuts out, compressor 1 is opened, the vapours of discharging HTHP enters condenser 4 through oil eliminator 2 and carries out condensation, the highly pressurised liquid that condenser is discharged enters liquid reservoir 3, heat exchanger 9, and feed flow collector 5 is to each group evaporimeter feed flow refrigeration.At this moment, refrigeration magnetic valve 17 is opened, highly pressurised liquid becomes the liquid of low temperature, low pressure to enter evaporimeter 20,21 and 22 heat absorption evaporations through expansion valve 18 throttlings, and the low-pressure gas after the evaporation is sucked back by compressor through magnetic valve 16, return-air collector 8, finishes a kind of refrigeration cycle.
When the utility model carries out the hot gas defrosting, evaporimeter 20 defrosts, the PLC controller closes valve with liquid supply electromagnetic valve 13 and 17, the return-air magnetic valve 16 of evaporimeter 20, opens and reclaims magnetic valve 14, hot gas solenoid valve 15, imports HTHP freon steam to evaporimeter 20 and carries out defrosting.The freon steam of HTHP is through behind the evaporimeter 20, return by the reverse flow of former feed flow pipeline by check valve 19 after being condensed into highly pressurised liquid, enter heat exchanger 9 through magnetic valve 14, recover 10, magnetic valve 12, expansion valve 11 and carry out heat exchange, system liquid flows to such an extent that be cold and the defrosting condensate liquid is vaporized, refrigerant vapour after the vaporization is sucked back by compressor, finishes a defrosting circulation. Other group evaporimeter 21 and 22 this moments are refrigeration normally, not influenced by the defrosting of evaporimeter 20.During actual the use, each evaporimeter can be defrosted respectively or defrosting simultaneously by the control of PLC controller as required.
It is fast to the utlity model has defrost speed, control flexibly, little to other evaporator temperature fluctuation, prevent the advantages such as compressor " liquid hammer " and system power dissipation are little.
Claims (3)
1. the hot gas defrosting device of the evaporimeter refrigeration system in parallel of group more than a kind is characterized in that comprising: on the outlet conduit of compressor (1), be arranged in parallel hot gas collector (7), this hot gas collector with condenser (4) and be communicated with the outlet of each group evaporimeter respectively; At the porch of each group evaporimeter and the check valve (19) that expansion valve (18) is arranged in parallel tapping, this check valve outlet has been arranged in parallel defrosting recovery collector (6) with feed flow collector (5), defrosting liquid returns compressor (1) through expansion valve (11); Be provided with the magnetic valve (13,14,15,16) of controlling the evaporimeter direction of flow with each group evaporator inlet and outlet.
2. hot gas defrosting device as claimed in claim 1 is characterized in that: be provided with recover (10) and magnetic valve (12) between recovery collector (6) and expansion valve (11).
3. hot gas defrosting device as claimed in claim 2 is characterized in that: described expansion valve (11) is provided with a heat exchanger (9) afterwards, and this heat exchanger is used for the heat exchange between defrosting back-steam and the condensed fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201326934U CN201463433U (en) | 2009-06-12 | 2009-06-12 | Hot air defroster for multi-set parallel evaporator refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201326934U CN201463433U (en) | 2009-06-12 | 2009-06-12 | Hot air defroster for multi-set parallel evaporator refrigeration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201463433U true CN201463433U (en) | 2010-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201326934U Expired - Lifetime CN201463433U (en) | 2009-06-12 | 2009-06-12 | Hot air defroster for multi-set parallel evaporator refrigeration system |
Country Status (1)
| Country | Link |
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| CN (1) | CN201463433U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162480A (en) * | 2013-01-23 | 2013-06-19 | 大连天禄机电设备制造有限公司 | Air cooler evaporator unit automatic defrosting method |
| CN104214986A (en) * | 2014-09-03 | 2014-12-17 | 美的集团武汉制冷设备有限公司 | Air-conditioning system and defrosting control method for air-conditioning system |
| CN107743571A (en) * | 2015-03-09 | 2018-02-27 | 约翰逊Ip控股有限公司 | Thermoelectrochemistry converter with integrated energy storage |
| CN110631320A (en) * | 2019-10-31 | 2019-12-31 | 江苏精英冷暖设备工程有限公司 | Hot gas defrosting system |
| WO2024036593A1 (en) * | 2022-08-19 | 2024-02-22 | 广东颐柏流体技术有限公司 | Air energy refrigeration and variable flow control system and method |
-
2009
- 2009-06-12 CN CN2009201326934U patent/CN201463433U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162480A (en) * | 2013-01-23 | 2013-06-19 | 大连天禄机电设备制造有限公司 | Air cooler evaporator unit automatic defrosting method |
| CN104214986A (en) * | 2014-09-03 | 2014-12-17 | 美的集团武汉制冷设备有限公司 | Air-conditioning system and defrosting control method for air-conditioning system |
| CN104214986B (en) * | 2014-09-03 | 2017-03-15 | 美的集团武汉制冷设备有限公司 | Air-conditioning system and the defrosting control method of air-conditioning system |
| CN107743571A (en) * | 2015-03-09 | 2018-02-27 | 约翰逊Ip控股有限公司 | Thermoelectrochemistry converter with integrated energy storage |
| CN107743571B (en) * | 2015-03-09 | 2020-09-11 | 约翰逊Ip控股有限公司 | Thermo-electrochemical converter with integrated energy storage |
| CN110631320A (en) * | 2019-10-31 | 2019-12-31 | 江苏精英冷暖设备工程有限公司 | Hot gas defrosting system |
| WO2024036593A1 (en) * | 2022-08-19 | 2024-02-22 | 广东颐柏流体技术有限公司 | Air energy refrigeration and variable flow control system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SHENZHEN KELEN COMMERCIAL EQUIPMENT CO., LTD. Assignor: Shenzhen Iceland Refrigerating Machinery Manufactory Co., Ltd. Contract record no.: 2012440020305 Denomination of utility model: Hot air defroster for multi-set parallel evaporator refrigeration system Granted publication date: 20100512 License type: Exclusive License Record date: 20121121 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SHENZHEN KELEN COMMERCIAL EQUIPMENT CO., LTD. Assignor: Shenzhen Iceland Refrigerating Machinery Manufactory Co., Ltd. Contract record no.: 2012440020305 Denomination of utility model: Hot air defroster for multi-set parallel evaporator refrigeration system Granted publication date: 20100512 License type: Exclusive License Record date: 20121121 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |