CN109163493A - A kind of on-ground weigher uses the hydronic high/low temperature freezer of propylene glycol - Google Patents
A kind of on-ground weigher uses the hydronic high/low temperature freezer of propylene glycol Download PDFInfo
- Publication number
- CN109163493A CN109163493A CN201811184695.8A CN201811184695A CN109163493A CN 109163493 A CN109163493 A CN 109163493A CN 201811184695 A CN201811184695 A CN 201811184695A CN 109163493 A CN109163493 A CN 109163493A
- Authority
- CN
- China
- Prior art keywords
- connect
- propylene glycol
- sensor
- temperature
- condenser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 title claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- QMYDVDBERNLWKB-UHFFFAOYSA-N propane-1,2-diol;hydrate Chemical compound O.CC(O)CO QMYDVDBERNLWKB-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 238000005057 refrigeration Methods 0.000 claims description 4
- 230000002528 anti-freeze Effects 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- QQONPFPTGQHPMA-UHFFFAOYSA-N Propene Chemical group CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000010725 compressor oil Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000021022 fresh fruits Nutrition 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D13/00—Stationary devices, e.g. cold-rooms
- F25D13/02—Stationary devices, e.g. cold-rooms with several cooling compartments, e.g. refrigerated locker systems
- F25D13/04—Stationary devices, e.g. cold-rooms with several cooling compartments, e.g. refrigerated locker systems the compartments being at different temperatures
-
- 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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/04—Preventing the formation of frost or condensate
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/02—Refrigerators including a heater
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses a kind of on-ground weighers to use the hydronic high/low temperature freezer of propylene glycol, including propylene glycol water tank and the water pump being connected with propylene glycol water tank, the water pump is connect with air-cooler, the air-cooler is connect with compressor, the compressor is connect with condenser, the condenser is connect through heating power expansion valve with High Temperature Refrigeratory and low-temperature cold store respectively, the High Temperature Refrigeratory and low-temperature cold store are connect through pressure-regulating valve with propylene glycol water tank respectively, first sensor and second sensor are further respectively had at the inlet and outlet of condenser, the first sensor and second sensor are connect through A/D converter with controller respectively, the controller is connect with frequency converter, the frequency converter is connect with water pump, the controller is also connect with air-cooler, make-up valve is additionally provided on propylene glycol water tank.The present invention is antifreeze come the on-ground weigher progress to High Temperature Refrigeratory and low temperature by the flow and flow rate of frequency converter adjusting water pump water outlet, improves the utilization rate of thermal energy, realizes energy conservation.
Description
Technical field
The present invention relates to freezer technical field, in particular to a kind of terrace is using the hydronic high/low temperature refrigeration of propylene glycol
Library.
Background technique
Freezer is widely applied in modern agricultural and sideline product and food production, is divided at present according to the difference of repertory
High temperature cold storage and low-temperature cold-storage, wherein high temperature cold storage is mainly used for storing fresh fruit, egg product and Chinese medicine etc., low temperature
Freezer is for storing frozen good food.Although currently, it is antifreeze for freezer on-ground weigher have using propylene glycol heating system into
Row terrace is antifreeze, be freezer on-ground weigher is heated using compressor oil cooling waste heat, but such mode provided by hot recycle pump third
The flow and flow rate of glycol solution be it is certain, it is molten when the temperature of freezer on-ground weigher is not very low to will appear propylene glycol
The temperature of liquid is higher than the temperature of compressor, certainly will need the equipment using supplement heat rejecter, complex in structure composition, and
The propylene glycol solution of constant flow and flow velocity recycles in pipeline will also result in the waste of waste heat, while also increase thermal cycle
The power consumption of pump.
Summary of the invention
To overcome defect present in background technique, the present invention provides a kind of terrace using the hydronic height of propylene glycol
Warm freezer.
To achieve the goals above, the technical solution adopted by the present invention are as follows: a kind of terrace is hydronic using propylene glycol
High/low temperature freezer, including propylene glycol water tank, water pump, air-cooler, compressor, condenser, High Temperature Refrigeratory and low-temperature cold store, it is described
The water outlet of propylene glycol water tank is connect with the water inlet of the water pump, and the water outlet of the water pump is connect with the air-cooler, institute
It states air-cooler to connect with the compressor, the compressor is connect with the condenser, and the condenser is respectively through thermal expansion
Valve is connect with High Temperature Refrigeratory and low-temperature cold store, and the High Temperature Refrigeratory and low-temperature cold store are respectively through pressure-regulating valve and propylene glycol water tank
Connection, further respectively has first sensor and second sensor at the inlet and outlet of the condenser, and described first
Sensor and second sensor are connect through A/D converter with controller respectively, and the controller is connect with frequency converter, the frequency conversion
Device is connect with the water pump, and the controller is also connect with air-cooler, is additionally provided with make-up valve on the propylene glycol water tank.
In the above scheme, the controller is PLC controller.
In the above scheme, first temperature sensor and second temperature sensor are DS1820 digital temperature sensing
Device.
In the above scheme, the condenser is horizontal condenser.
Compared with prior art, the beneficial effects of the present invention are: detecting condenser water-in and water-out temperature using temperature sensor
And read in controller, and calculating temperature difference value, the frequency of frequency converter is controlled by the temperature difference to control the revolving speed of water pump, adjusted
The flow and flow rate of water outlet is saved, thus in real time according to the flow and flow rate of propylene glycol solution in the status adjustment pipeline of on-ground weigher, with
The heat for making full use of propylene glycol solution reaches energy-efficient purpose.
Detailed description of the invention
Fig. 1 is the principle of the present invention block diagram.
In figure: 1- propylene glycol water tank；2- water pump；3- air-cooler；4- compressor；5- condenser；6- High Temperature Refrigeratory；7- heating power
Expansion valve；8- pressure-regulating valve；9- low-temperature cold store；101- first sensor；102- second sensor；11-A/D converter；12-
Controller；13- frequency converter；14- make-up valve.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, a kind of terrace provided by the invention uses the hydronic high/low temperature freezer of propylene glycol, including third
Glycol water tank 1, water pump 2, air-cooler 3, compressor 4, condenser 5, High Temperature Refrigeratory 6 and low-temperature cold store 9, propylene glycol water tank 1 go out
The mouth of a river is connect with the water inlet of water pump 2, and the water outlet of water pump 2 is connect with air-cooler 3, and air-cooler 3 is connect with compressor 4, compression
Machine 4 is connect with condenser 5, and condenser 5 is connect through heating power expansion valve 7 with High Temperature Refrigeratory 6 and low-temperature cold store 7 respectively, High Temperature Refrigeratory 6
It connect through pressure-regulating valve 8 with propylene glycol water tank 1 with low-temperature cold store 7, also divides at the inlet and outlet of condenser 5 respectively
Not She You first sensor 101 and second sensor 102, first sensor 101 and second sensor 102 are converted through A/D respectively
Device 11 is connect with controller 12, and controller 12 is connect with frequency converter 13, and frequency converter 13 is connect with water pump 2, controller 12 also with it is cold
Blower 3 connects, and make-up valve 14 is additionally provided on propylene glycol water tank 1.
Wherein, controller 12 is PLC controller.
Wherein, the first temperature sensor 101 and second temperature sensor 102 are DS1820 digital temperature sensor.
Wherein, condenser 5 is horizontal condenser.
The variable frequency adjustment mode of water pump 2 is: controller 12 passes through the first temperature sensor 101 and second temperature sensor
102 read in the water-in and water-out temperature of condenser 5 in controller 12, and calculate temperature difference, are then controlled according to the temperature difference
The frequency of frequency converter 13 adjusts the flow and flow rate of water outlet, controls the speed of heat exchange to control the revolving speed of water pump 2, thus real
The antifreeze energy conservation of existing freezer.
The temperature of propylene glycol liquid is believed the simulation of induction by the first temperature sensor 101 and second temperature sensor 102
Number it is sent to A/D converter 11, the digital signal after the conversion of A/D converter 11 feeds back to PLC controller, through PLC controller
Opening or closing for air-cooler 3 is determined after calculating the temperature value at two, when propylene glycol fluid temperature rises to certain value
Shi Kaiqi air-cooler 3 closes air-cooler 3 when propylene glycol fluid temperature drops to certain value.
The above is only embodiments of the present invention, are not intended to limit the scope of the invention, all to utilize the present invention
Equivalent structure or equivalent flow shift made by specification and accompanying drawing content is applied directly or indirectly in other the relevant technologies
Field is included within the scope of the present invention.
Claims (4)
1. a kind of on-ground weigher uses the hydronic high/low temperature freezer of propylene glycol, it is characterised in that: including propylene glycol water tank (1), water
Pump (2), air-cooler (3), compressor (4), condenser (5), High Temperature Refrigeratory (6) and low-temperature cold store (9), the propylene glycol water tank
(1) water outlet is connect with the water inlet of the water pump (2), and the water outlet of the water pump (2) is connect with the air-cooler (3),
The air-cooler (3) connect with the compressor (4), and the compressor (4) connect with the condenser (5), the condenser
(5) it is connect respectively through heating power expansion valve (7) with High Temperature Refrigeratory (6) and low-temperature cold store (7), the High Temperature Refrigeratory (6) and low temperature cold
Library (7) is connect through pressure-regulating valve (8) with propylene glycol water tank (1) respectively, at the inlet and outlet of the condenser (5)
Further respectively have first sensor (101) and second sensor (102), the first sensor (101) and second sensor
(102) it is connect respectively through A/D converter (11) with controller (12), the controller (12) connect with frequency converter (13), described
Frequency converter (13) is connect with the water pump (2), and the controller (12) also connect with air-cooler (3), in the propylene glycol water tank
(1) make-up valve (14) are additionally provided on.
2. a kind of freezer circulatory system with high and low temperature refrigeration handoff functionality according to claim 1, feature exist
In: the controller (12) is PLC controller.
3. a kind of freezer circulatory system with high and low temperature refrigeration handoff functionality according to claim 1, feature exist
In: first temperature sensor (101) and second temperature sensor (102) be DS1820 digital temperature sensor.
4. thoroughly doing away with a kind of freezer circulatory system with high and low temperature refrigeration handoff functionality described in claim 1, feature exists
In: the condenser (5) is horizontal condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811184695.8A CN109163493A (en) | 2018-10-11 | 2018-10-11 | A kind of on-ground weigher uses the hydronic high/low temperature freezer of propylene glycol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811184695.8A CN109163493A (en) | 2018-10-11 | 2018-10-11 | A kind of on-ground weigher uses the hydronic high/low temperature freezer of propylene glycol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109163493A true CN109163493A (en) | 2019-01-08 |
Family
ID=64877828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811184695.8A Pending CN109163493A (en) | 2018-10-11 | 2018-10-11 | A kind of on-ground weigher uses the hydronic high/low temperature freezer of propylene glycol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109163493A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270940A (en) * | 2008-01-30 | 2008-09-24 | 刘克里 | Integral cooling and grading condensation heat pump type waste heat recovery shower-bath device |
| JP2009293839A (en) * | 2008-06-04 | 2009-12-17 | Hitachi Appliances Inc | Exhaust heat utilizing system of refrigerating device |
| CN201850545U (en) * | 2010-11-15 | 2011-06-01 | 大连三洋压缩机有限公司 | Cold storage floor anti-freezing system adopting compressor exhaust as heat source to heat anti-frost liquid |
| CN202899172U (en) * | 2012-10-12 | 2013-04-24 | 天津港国际物流发展有限公司 | Propylene glycol heating system of refrigeration storage floor |
| CN103835919A (en) * | 2013-12-26 | 2014-06-04 | 江苏金通灵流体机械科技股份有限公司 | Waste heat recovery system |
| CN204202279U (en) * | 2014-11-12 | 2015-03-11 | 江苏苏净集团有限公司 | Freezer |
| CN208920687U (en) * | 2018-10-11 | 2019-05-31 | 武汉巨力鼎兴冷链股份有限公司 | On-ground weigher uses the hydronic high/low temperature freezer of propylene glycol |
-
2018
- 2018-10-11 CN CN201811184695.8A patent/CN109163493A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270940A (en) * | 2008-01-30 | 2008-09-24 | 刘克里 | Integral cooling and grading condensation heat pump type waste heat recovery shower-bath device |
| JP2009293839A (en) * | 2008-06-04 | 2009-12-17 | Hitachi Appliances Inc | Exhaust heat utilizing system of refrigerating device |
| CN201850545U (en) * | 2010-11-15 | 2011-06-01 | 大连三洋压缩机有限公司 | Cold storage floor anti-freezing system adopting compressor exhaust as heat source to heat anti-frost liquid |
| CN202899172U (en) * | 2012-10-12 | 2013-04-24 | 天津港国际物流发展有限公司 | Propylene glycol heating system of refrigeration storage floor |
| CN103835919A (en) * | 2013-12-26 | 2014-06-04 | 江苏金通灵流体机械科技股份有限公司 | Waste heat recovery system |
| CN204202279U (en) * | 2014-11-12 | 2015-03-11 | 江苏苏净集团有限公司 | Freezer |
| CN208920687U (en) * | 2018-10-11 | 2019-05-31 | 武汉巨力鼎兴冷链股份有限公司 | On-ground weigher uses the hydronic high/low temperature freezer of propylene glycol |
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