CN202057151U - Centralized control system for a plurality of cold storages - Google Patents
Centralized control system for a plurality of cold storages Download PDFInfo
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- CN202057151U CN202057151U CN2011201565595U CN201120156559U CN202057151U CN 202057151 U CN202057151 U CN 202057151U CN 2011201565595 U CN2011201565595 U CN 2011201565595U CN 201120156559 U CN201120156559 U CN 201120156559U CN 202057151 U CN202057151 U CN 202057151U
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- control system
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- controller
- freezer
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Abstract
The utility model relates to a centralized control system for a plurality of cold storages. The centralized control system comprises a controller and a compressor (1), wherein the air exhaust end of the compressor (1) is connected with a condenser (6) through an air exhaust pipe. The centralized control system also comprises at least three evaporators (3); the three evaporators (3) are connected with the condenser (6) through a refrigerant expansion throttle valve (4) and a refrigerant liquid feed solenoid valve (5) which are connected in series; and the evaporators (3) are also connected with the return air end of the compressor (1) through a return air pipeline (2). The centralized control system also comprises a temperature sensor installed on a return air pipeline orifice of each evaporator (3) and connected with the controller. A temperature signal of each cold storage is collected by the temperature sensor and sent to the controller; after the temperature signal is processed by the controller, a control signal is outputted; and the temperatures of the cold storages and the running state of equipment are displayed. The centralized control system improves the energy efficiency ratio of the compressor and avoids frequent startup of the compressor, thereby reducing the energy consumption and prolonging the service life of the compressor.
Description
Technical field
The utility model relates to a kind of many freezers centralized control system.
Background technology
Under the compressor underrun state, Energy Efficiency Ratio descends, and causes energy consumption to increase.In many freezers, the multipotency social estate system cooling system, the situation that a certain freezer separate refrigeration operation must occur is under this situation, when temperature of ice house reaches the temperature upper and lower limit of setting, to the phenomenon that single freezer refrigerating is frequently opened, closed occur, cause high frequent to start, close.The freezer quantity that refrigeration system is controlled is many more, and the phenomenon that high frequent starts, closes is serious more thereupon.High frequent starts, closes, and can influence its service life, increases energy consumption.
Under the situation of many freezers unequal loading, wherein when the isolated operation of minimum load freezer, the refrigerating capacity of compressor can cause evaporating pressure low excessively greater than the load of this freezer, causes the compressor Energy Efficiency Ratio to descend.
The utility model content
Technical problem to be solved in the utility model is, a kind of many freezers centralized control system is provided, first, improve the load factor of compressor, to improve the compressor Energy Efficiency Ratio; The second, avoid frequent starting, cutting down the consumption of energy, improve compressor service life; Three, by the stable evaporating temperature that improves, reach the target that improves the compressor Energy Efficiency Ratio.
The technical solution of the utility model is as follows:
A kind of many freezers centralized control system comprises controller and compressor, and the exhaust end of compressor is connected with condenser by discharge duct, it is characterized in that: also comprise at least three evaporimeters; Evaporimeter is connected with described condenser by refrigerant feed liquid magnetic valve, the cold-producing medium expansion throttling valve of mutual series connection, and evaporimeter also is connected with the air return end of described compressor by return-air duct; Also comprise temperature sensor on the return-air mouth of pipe that is installed in every evaporimeter and that be connected with described controller.
Described controller also is connected with alarm and display respectively.
Described controller is PLC, microcomputer controller, a kind of in industrial computer and the computer.
Good effect of the present utility model is: adopt system of the present utility model, in many freezers, have only a freezer not reach the design temperature upper limit, when being in running status, the load of this freezer is not more than energy grade minimum in the compressor of whole system, at this moment, compressor can be in than the low energy level running status, and the Energy Efficiency Ratio of compressor is lower.At this moment, seek the highest freezer of another temperature and open refrigeration, move simultaneously with described first freezer, thereby the load of freezer is improved, reach the compressor higher energy levels, the operation of compressor higher load has improved Energy Efficiency Ratio.And avoided the frequent starting of compressor, and reduced energy consumption, improved compressor service life.The utility model makes the evaporating pressure of compressor and sets value coupling better by increasing the freezer quantity of operation simultaneously, has avoided the low excessively phenomenon of evaporating pressure to take place, and has reached the target that improves the compressor Energy Efficiency Ratio.
The utility model also has characteristics simple in structure, reliable.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Further specify the utility model below in conjunction with drawings and Examples.
As Fig. 1, the utility model comprises controller and compressor 1, and the exhaust end of compressor 1 is connected with condenser 6 by blast pipe.Also comprise at least four evaporimeters 3; Every evaporimeter 3 is connected with described condenser 6 by refrigerant feed liquid magnetic valve 5, the cold-producing medium expansion throttling valve 4 of mutual series connection, and every evaporimeter 3 also is connected by the air return end of return-air duct 2 with described compressor 1; On the return-air mouth of pipe of every evaporimeter the temperature sensor that is connected with described controller is installed all.
Described controller also is connected with alarm and display respectively.Described controller is PLC, microcomputer controller, a kind of in industrial computer and the computer.
Control step of the present utility model is:
One, temperature acquisition method:
Gather the temperature signal of each freezer by temperature sensor, be transferred to controller;
Two, control method:
Whole temperature of ice house of being controlled are transferred to controller; Controller compares the temperature data and the range of set temperature of each freezer, as has only a freezer, be called first freezer and be in running status, controller carries out analysis and judgement by the temperature to other freezer, output order makes the wherein the highest freezer of temperature, is called the second freezer running refrigerating; When second freezer reach setting stop temperature and when out of service, controller carries out analysis and judgement once more by the temperature to other freezer, output order makes the freezer running refrigerating that wherein temperature is the highest; Carry out successively, reach the temperature that stops of setting up to described first freezer, this first freezer controlled by controller and other follows the freezer of first freezer operation simultaneously out of service.
Controller shows the temperature value of each freezer, the running status of evaporimeter, refrigerant feed liquid magnetic valve in each freezer, and each freezer evaporimeter warning running status by display.
As Fig. 1, compressor bank comprises 1: the first compressor Y1 of two in parallel above compressors and the second compressor Y2, and wherein the first compressor Y1 and the second compressor Y2 possess three energy grades respectively: 50%, 75%, 100%.Under a certain operating mode, their full load refrigerating capacity is 40KW.
This unit is many freezers, and this example provides refrigeration for four freezers.Under same operating mode, the heat exchange amount of the evaporimeter 3 of each freezer is 20KW.
When having only the first evaporimeter LF1 of first freezer to be in refrigerating state, Y1 moves under 50% energy grade state, and at this moment, the Energy Efficiency Ratio of the first compressor Y1 descends.
At this moment, the temperature that sensor detects second freezer is the highest, and controller instructs the second refrigerant feed liquid magnetic valve DF2 to open, second evaporimeter LF2 operation, and first, second freezer freezes simultaneously, the first compressor Y1 oepration at full load, Energy Efficiency Ratio improves.
Set down in limited time when the temperature of second freezer reaches that the second refrigerant feed liquid magnetic valve DF2 closes, controller judges by detecting, and selects that the highest freezer and first freezer of temperature freezes simultaneously in the whole freezers after the 3rd freezer.And the like, reach the lowest temperature of setting until first freezer, all freezers stop refrigerating operaton.
Claims (3)
1. freezer centralized control system more than a kind comprises controller and compressor (1), and the exhaust end of compressor (1) is connected with condenser (6) by blast pipe, it is characterized in that: also comprise at least three evaporimeters (3); Evaporimeter (3) is connected with described condenser (6) by refrigerant feed liquid magnetic valve (5), the cold-producing medium expansion throttling valve (4) of series connection mutually, and evaporimeter (3) also is connected by the air return end of return-air duct (2) with described compressor (1); Also comprise temperature sensor on the return-air mouth of pipe that is installed in every evaporimeter (3) and that be connected with described controller.
2. many freezers centralized control system as claimed in claim 1 is characterized in that: described controller also is connected with alarm and display respectively.
3. many freezers centralized control system as claimed in claim 1 or 2 is characterized in that: described controller is PLC, microcomputer controller, a kind of in industrial computer and the computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201565595U CN202057151U (en) | 2011-05-17 | 2011-05-17 | Centralized control system for a plurality of cold storages |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201565595U CN202057151U (en) | 2011-05-17 | 2011-05-17 | Centralized control system for a plurality of cold storages |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202057151U true CN202057151U (en) | 2011-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201565595U Expired - Lifetime CN202057151U (en) | 2011-05-17 | 2011-05-17 | Centralized control system for a plurality of cold storages |
Country Status (1)
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| CN (1) | CN202057151U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716351A (en) * | 2016-03-24 | 2016-06-29 | 海宁海通机电有限公司 | Commercial refrigerator |
| CN106440632A (en) * | 2016-10-28 | 2017-02-22 | 珠海格力电器股份有限公司 | Control method and device for refrigeration equipment of refrigeration house |
| CN107763919A (en) * | 2016-08-19 | 2018-03-06 | 广州鲜之源生态冷链技术有限公司 | A kind of more storehouse group managing and control systems of intelligence |
| CN108800717A (en) * | 2018-06-07 | 2018-11-13 | 青岛冰岩制冷设备有限公司 | A kind of energy-saving control system and power saving refrigerator |
| CN110657627A (en) * | 2019-10-31 | 2020-01-07 | 江苏精英冷暖设备工程有限公司 | Freezer variable flow economizer system |
| CN114151987A (en) * | 2021-11-12 | 2022-03-08 | 青岛澳柯玛生物医疗有限公司 | Parallel control method for compressor units |
| CN114576876A (en) * | 2022-03-03 | 2022-06-03 | 上海理工大学 | Multi-load variable-frequency refrigeration system and control method |
-
2011
- 2011-05-17 CN CN2011201565595U patent/CN202057151U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716351A (en) * | 2016-03-24 | 2016-06-29 | 海宁海通机电有限公司 | Commercial refrigerator |
| CN107763919A (en) * | 2016-08-19 | 2018-03-06 | 广州鲜之源生态冷链技术有限公司 | A kind of more storehouse group managing and control systems of intelligence |
| CN106440632A (en) * | 2016-10-28 | 2017-02-22 | 珠海格力电器股份有限公司 | Control method and device for refrigeration equipment of refrigeration house |
| CN106440632B (en) * | 2016-10-28 | 2019-04-23 | 珠海格力电器股份有限公司 | Control method and device for refrigeration equipment of refrigeration house |
| CN108800717A (en) * | 2018-06-07 | 2018-11-13 | 青岛冰岩制冷设备有限公司 | A kind of energy-saving control system and power saving refrigerator |
| CN110657627A (en) * | 2019-10-31 | 2020-01-07 | 江苏精英冷暖设备工程有限公司 | Freezer variable flow economizer system |
| CN114151987A (en) * | 2021-11-12 | 2022-03-08 | 青岛澳柯玛生物医疗有限公司 | Parallel control method for compressor units |
| CN114576876A (en) * | 2022-03-03 | 2022-06-03 | 上海理工大学 | Multi-load variable-frequency refrigeration system and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111130 |
|
| CX01 | Expiry of patent term |