CN204063665U - A kind of freezer group energy conserving system - Google Patents
A kind of freezer group energy conserving system Download PDFInfo
- Publication number
- CN204063665U CN204063665U CN201420182499.8U CN201420182499U CN204063665U CN 204063665 U CN204063665 U CN 204063665U CN 201420182499 U CN201420182499 U CN 201420182499U CN 204063665 U CN204063665 U CN 204063665U
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- Prior art keywords
- freezer
- magnetic valve
- refrigeration unit
- plc
- evaporimeter
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- 238000005057 refrigeration Methods 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003434 inspiratory effect Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The technical problems to be solved in the utility model is existing freezer group unit frequent starting, cause the loss of a large amount of reactive power, for solving the problem, a kind of freezer group energy conserving system is provided, comprise refrigeration unit and temperature controller, refrigeration unit is connected with condenser, magnetic valve, choke valve, evaporimeter successively, evaporimeter is connected with refrigeration unit by suction line, suction line arranges pressure sensor, refrigeration unit is all connected with PLC with pressure sensor, PLC is connected with touch-screen, and described magnetic valve is all connected with PLC with temperature controller.Temperature controller in each freezer is all connected with PLC with magnetic valve by the utility model, can detect the temperature changing trend of each freezer at any time, and judges whether to need to open and stop compressor according to the trend of temperature of ice house change.
Description
Technical field
It is energy-conservation that the utility model relates to freezer group, is specifically related to a kind of freezer group energy conserving system.
Background technology
Refrigeration enterprise power consumption appraisal standards regulation: freezer sorage unit product power consumption is 0.3Kwh/t; Chilled storage unit product power consumption is 0.9Kwh/t; Frozen product process unit product power consumption is 120Kwh/t.But the enterprise's freezer sorage refrigeration unit product power consumption had in actual moving process reaches 1.4Kwh/t; Chilled storage unit product power consumption is nearly 1.0Kwh/t; Frozen product process unit product power consumption reaches 180Kwh/t.This shows that an operating power consumption difference of enterprise practical is comparatively large, also illustrate and there is sizable energy-saving potential.
For the vicissitudinous refrigeration system of load, the freezer group of rising especially at present, existing way is the feature according to load variations, selects multiple compressors to carry out parallel connection, ensures that compressor is in the high full load of efficiency or full load regional work; When different load, by changing the unlatching number of units of compressor, make the efficiency of compressor high as far as possible.
As shown in Figure 1, the configuration of its refrigerating part is following describes:
Refrigeration unit 101 is connected with condenser 102 by pipeline, condenser 102 is connected with magnetic valve 103 by pipeline, magnetic valve 103 is connected with choke valve 104 by pipeline, choke valve 104 is connected with the evaporimeter 106 inside freezer by pipeline, and evaporimeter 106 is connected with refrigeration unit 101 by pipeline.Wherein magnetic valve 103, choke valve 104 and evaporimeter 106, be divided into 3 tunnels, wherein the first via is, by magnetic valve 103.1, is connected through magnetic valve 104.1 by pipeline with evaporimeter 106.1; Second tunnel is, by magnetic valve 103.2, is connected through magnetic valve 104.2 by pipeline with evaporimeter 106.2; 3rd tunnel is, by magnetic valve 103.3, is connected through magnetic valve 104.3 by pipeline with evaporimeter 106.3.After compressor compresses in the cooled unit 101 of cold-producing medium, become the superheated steam of HTHP, to enter in condenser 102 after condensation, become the liquid of cryogenic high pressure, after entering choke valve 104 by magnetic valve 103, become the liquid-vapor mixture of low-temp low-pressure, flash to overheated gas in evaporimeter 106 after, compressor in cooled unit 101 sucks, and completes whole kind of refrigeration cycle.
As in Fig. 1, the configuration of its control section is following to be described:
Temperature controller 105 is connected with magnetic valve 103 by cable, and PLC107 is connected with touch-screen 109 by cable, and the inspiratory pressure sensor 108 above suction line is connected with PLC107 by cable.The opening and closing of liquid supply electromagnetic valve 103, are controlled by temperature controller 105.The quantity of opening compressor operating in refrigeration unit 301 has PLC307 to control.
Its control logic as shown in Figure 2.
Step S201, selects the freezer needed to open.Temperature according to freezer temperature controller 105 sets, if temperature of ice house is higher than design temperature, opens freezer liquid supply electromagnetic valve 103, realizes freezer feed flow.
Step S203, detects pressure of inspiration(Pi).According to inspiratory pressure sensor 108, the analog data of pressure of inspiration(Pi) is sent in PLC107 by cable and processes, become pressure of inspiration(Pi) force value.
Step S205, pressure of inspiration(Pi) is greater than the upper limit.If condition is set up, just perform step S206; If condition is false, then perform step S207.
Step S209, pressure of inspiration(Pi) is less than lower limit.If condition is set up, just perform step S210; If condition is false, then perform step S211.
The design of current freezer group refrigeration system adopts Parallel sets as the low-temperature receiver (refrigeration unit in Fig. 1, can be that two or multiple compressors are connected in parallel on above whole frame, composition Parallel sets), each freezer adopts independent feed flow, when the temperature of wherein certain freezer reach design temperature upper in limited time, open liquid supply electromagnetic valve, to this freezer feed flow, refrigeration; Close liquid supply electromagnetic valve in limited time when the temperature of wherein certain freezer reaches the lower of design temperature, feed flow is stopped to this freezer, refrigeration.Parallel sets then according to the change of pressure of inspiration(Pi), regulate the number of units of compressor operating adapt to load change (namely end freezer unlatching quantity number and load variations number)
But select the number of units of compressor parallel howsoever, and the change by regulating the number of units starting compressor to adapt to load, all can cause the frequent starting of compressor.High frequent starts the loss that will cause a large amount of reactive power, and the life-span of the frequent starting of compressor to compressor is influential.
Summary of the invention
The technical problems to be solved in the utility model is existing freezer group unit frequent starting, causes the loss of a large amount of reactive power, for solving the problem, provides a kind of freezer group energy conserving system.
The purpose of this utility model realizes in the following manner:
A kind of freezer group energy conserving system, comprise refrigeration unit and temperature controller, refrigeration unit is connected with condenser, magnetic valve, choke valve, evaporimeter successively, evaporimeter is connected with refrigeration unit by suction line, suction line arranges pressure sensor, refrigeration unit is all connected with PLC with pressure sensor, and PLC is connected with touch-screen, and described magnetic valve is all connected with PLC with temperature controller.
Described condenser is connected with the multichannel freezer be connected in parallel respectively, all arranges temperature controller and evaporimeter in the freezer of every road, and every road freezer is all connected with magnetic valve, choke valve.
Relative to prior art, the temperature controller in each freezer is all connected with PLC with magnetic valve by the utility model, can detect the temperature changing trend of each freezer at any time, and judges whether to need to open and stop compressor according to the trend of temperature of ice house change.Do the startup and stopping that can avoiding high frequent like this, cause the loss of electricity consumption reactive power, the service life of compressor can be improved simultaneously, reach the object improving energy saving of system and reliability.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that existing freezer group realizes freezing and controlling.
Fig. 2 is the programed logic block diagram of prior art.
Fig. 3 is the schematic diagram that the present invention realizes freezing and controlling.
Fig. 4 is programed logic block diagram of the present invention.
Detailed description of the invention
As shown in Figure 3, refrigerating part is configured to: refrigeration unit 301 is connected with condenser 302 by pipeline, condenser 302 is connected with magnetic valve 303 by pipeline, magnetic valve 303 is connected with choke valve 304 by pipeline, choke valve 304 is connected with the evaporimeter 306 inside freezer by pipeline, and evaporimeter 306 is connected with refrigeration unit 301 by pipeline.Wherein magnetic valve 303, choke valve 304 and evaporimeter 306, be divided into 3 tunnels, wherein the first via is, by magnetic valve 303.1, is connected through choke valve 304.1 by pipeline with evaporimeter 306.1; Second tunnel is, by magnetic valve 303.2, is connected through choke valve 304.2 by pipeline with evaporimeter 306.2; 3rd tunnel is, by magnetic valve 303.3, is connected through choke valve 304.3 by pipeline with evaporimeter 306.3.After compressor compresses in the cooled unit 301 of cold-producing medium, become the superheated steam of HTHP, to enter in condenser 302 after condensation, become the liquid of cryogenic high pressure, after entering choke valve 304 by magnetic valve 303, become the liquid-vapor mixture of low-temp low-pressure, flash to overheated gas in evaporimeter 306 after, compressor in cooled unit 301 sucks, and completes whole kind of refrigeration cycle.The configuration of above-mentioned refrigerating part is the explanation that the three road freezers that are connected in parallel are made for example, and according to actual needs, refrigerating part configuration can also arrange the multichannel freezer be connected in parallel, and can arrange four road freezers, five road freezers.
As shown in Figure 3, control section is configured to:
Temperature controller 305 is connected with PLC307 by cable, and magnetic valve 303 is connected with PLC307 by cable, and PLC307 is connected with touch-screen 309 by cable, and the inspiratory pressure sensor 308 above suction line is connected with PLC307 by cable.The opening and closing of liquid supply electromagnetic valve 303, are controlled by PLC307.The quantity of opening compressor operating in refrigeration unit 301 has PLC307 to control.
Its control logic as shown in Figure 4.
Step S401, selects the freezer needed to open.Temperature according to freezer temperature controller 305 sets, if temperature of ice house is higher than design temperature, opens freezer liquid supply electromagnetic valve 303, realizes freezer feed flow.
Step S403, detects pressure of inspiration(Pi).According to inspiratory pressure sensor 308, the analog data of pressure of inspiration(Pi) is sent in PLC307 by cable and processes, become pressure of inspiration(Pi) force value.
Step S405, pressure of inspiration(Pi) is greater than the upper limit.If condition is set up, just perform step S406.1; If condition is false, then perform step S407.
Step S406.1, detects each temperature of ice house.By temperature controller 305, temperature of ice house data are sent to PLC307.
Whether step 406.2, have lower than the desired temperature upper limit, and have the freezer of downward trend.The data that the temperature data of temperature controller 305 is sent in PLC307 are processed, judges whether this freezer has downward trend.If condition is set up, perform step S406.3, if condition is false, then perform step S406.4.
Step S409, pressure of inspiration(Pi) is less than lower limit.If condition is set up, just perform step S410.1; If condition is false, then perform step S411.
Step S410.1, detects each temperature of ice house.By temperature controller 305, temperature of ice house data are sent to PLC307.
Whether step 410.2, have lower than the desired temperature upper limit, and freezer on the rise.The data that the temperature data of temperature controller 305 is sent in PLC307 are processed, judges that whether this freezer is on the rise.If condition is set up, perform step S410.3, if condition is false, then perform step S410.4.
Claims (1)
1. a freezer group energy conserving system, comprise refrigeration unit and temperature controller, refrigeration unit successively with condenser, magnetic valve, choke valve, evaporimeter is connected, evaporimeter is connected with refrigeration unit by suction line, suction line arranges pressure sensor, refrigeration unit is all connected with PLC with pressure sensor, PLC is connected with touch-screen, it is characterized in that: described magnetic valve is all connected with PLC with temperature controller, described condenser is connected with the multichannel freezer be connected in parallel respectively, in the freezer of every road, temperature controller and evaporimeter are all set, every road freezer all and magnetic valve, choke valve is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420182499.8U CN204063665U (en) | 2014-04-16 | 2014-04-16 | A kind of freezer group energy conserving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420182499.8U CN204063665U (en) | 2014-04-16 | 2014-04-16 | A kind of freezer group energy conserving system |
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| CN204063665U true CN204063665U (en) | 2014-12-31 |
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| CN201420182499.8U Expired - Lifetime CN204063665U (en) | 2014-04-16 | 2014-04-16 | A kind of freezer group energy conserving system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020922A (en) * | 2014-04-16 | 2015-11-04 | 河南千年冷冻设备有限公司 | Refrigeration house group energy saving system and control method thereof |
| CN105258375A (en) * | 2015-11-06 | 2016-01-20 | 西安回天血液制品有限责任公司 | Blood product production energy saving refrigerating system and method |
| CN106403484A (en) * | 2015-12-04 | 2017-02-15 | 苏州新亚科技有限公司 | Intelligent modular control system and control method thereof |
| CN106440632A (en) * | 2016-10-28 | 2017-02-22 | 珠海格力电器股份有限公司 | Control method and device of cold storage room refrigeration equipment |
| CN108195106A (en) * | 2017-11-22 | 2018-06-22 | 珠海格力电器股份有限公司 | The control method and device of hot fluorine defrosting refrigerating system, freezer |
-
2014
- 2014-04-16 CN CN201420182499.8U patent/CN204063665U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020922A (en) * | 2014-04-16 | 2015-11-04 | 河南千年冷冻设备有限公司 | Refrigeration house group energy saving system and control method thereof |
| CN105020922B (en) * | 2014-04-16 | 2017-11-28 | 河南千年冷冻设备有限公司 | A kind of freezer group energy conserving system and its control method |
| CN105258375A (en) * | 2015-11-06 | 2016-01-20 | 西安回天血液制品有限责任公司 | Blood product production energy saving refrigerating system and method |
| CN106403484A (en) * | 2015-12-04 | 2017-02-15 | 苏州新亚科技有限公司 | Intelligent modular control system and control method thereof |
| CN106440632A (en) * | 2016-10-28 | 2017-02-22 | 珠海格力电器股份有限公司 | Control method and device of cold storage room refrigeration equipment |
| CN106440632B (en) * | 2016-10-28 | 2019-04-23 | 珠海格力电器股份有限公司 | A kind of control method and device of freezer refrigerating equipment |
| CN108195106A (en) * | 2017-11-22 | 2018-06-22 | 珠海格力电器股份有限公司 | The control method and device of hot fluorine defrosting refrigerating system, freezer |
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