CN200975800Y - Energy-saving type freezing machine set - Google Patents
Energy-saving type freezing machine set Download PDFInfo
- Publication number
- CN200975800Y CN200975800Y CN 200620165437 CN200620165437U CN200975800Y CN 200975800 Y CN200975800 Y CN 200975800Y CN 200620165437 CN200620165437 CN 200620165437 CN 200620165437 U CN200620165437 U CN 200620165437U CN 200975800 Y CN200975800 Y CN 200975800Y
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- China
- Prior art keywords
- cooling
- cold
- egr
- heat exchanger
- condenser
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- 238000007710 freezing Methods 0.000 title claims description 19
- 238000001816 cooling Methods 0.000 claims abstract description 73
- 230000000576 supplementary Effects 0.000 claims description 37
- 239000002826 coolant Substances 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000005057 refrigeration Methods 0.000 abstract description 9
- 235000019628 coolness Nutrition 0.000 description 62
- 101700082870 EGR1 Proteins 0.000 description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 101700083561 EGR2 Proteins 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 230000002035 prolonged Effects 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 230000002269 spontaneous Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 230000001351 cycling Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000001105 regulatory Effects 0.000 description 1
Abstract
The utility model discloses an energy-saving refrigeration unit, which comprises a cooling-machine refrigeration circulating device and a user load circulating device; a compressor and a condenser are connected with the refrigeration circulating device; the condenser is connected with a cooling device; a thermal load and an evaporator are connected with the user load circulating device; the cooling-machine refrigeration circulating device and the user load circulating device exchange heat through the evaporator; the user load circulating device is also connected with an auxiliary heat exchanger; the auxiliary exchanger and the condenser are parallel connected on the cooling device which makes the user load circulating device and the cooling device can also exchange heat through the auxiliary heat exchanger; the utility model can use the auxiliary heat exchanger to automatically transfer heat under a working condition with a low ambient temperature, or can coordinate with the cooling-machine refrigeration circulation to operate simultaneously which can save a large quantity of electric energy, prolong the period of usage of the device and coordinate with each other to improve the reliability of cooling.
Description
Technical field
The utility model relates to a kind of energy-saving freezing unit.
Background technology
Freezing unit is widely used in civilian or industrial and mining enterprises' air-conditioning system or industrial freezing equipment, these freezing units have generally comprised cold EGR of cold mechanism and user load EGR two large divisions, the cold EGR of cold mechanism comprises compressor and condenser two large divisions again, and condenser is connected with cooling devices such as cooling tower or cooling blower, after compressor compresses the cold-producing medium of coming from the user load EGR, deliver to and carry out condensation in the condenser, condenser by with after cooling device carries out heat exchange again throttling become low-temperature low-pressure refrigerant, it is sent in the evaporimeter of user load EGR then, and evaporimeter cools off with the control humiture user load and indoor environment.
The cold EGR of cold mechanism (freezing unit) generally is divided into water-cooled and air-cooled according to the type of condenser, type according to the evaporimeter in the load cycle device can be further divided into handpiece Water Chilling Units and cold wind unit again, therefore combine, have four types refrigeration system, wherein comparatively common is the water-cooled handpiece Water Chilling Units, air-cooled handpiece Water Chilling Units and water-cooled cold wind unit etc.
The operation principle of these units all is the cold circulation of cold mechanism in the market, the transfer of heat is to rely on the steam compression type refrigeration circulation to carry out singlely, and the carrying out of the cold circulation of these cold mechanism all needs to start compressor and blower fan thereby consumes a large amount of electric energy, and finally all be to realize that heat transfers to purpose in the surrounding environment (or natural environment) by subscriber equipment, even under the lower situation of environment temperature, the freezing unit of this class also is so to carry out kind of refrigeration cycle and realize transfer of heat.
In fact, be lower than in environment temperature under the situation of thermal source or setting value, can not start (or few start) compressor assembly and rely on the suitable auxiliary spontaneous transfer that realizes heat of media circulation.The summer condition time of the winter condition of low ambient temperature and high ambient temperature is almost suitable, uses compressor cooling singlely, and not only wasting electric energy also influences the unit working life.
The utility model content
The utility model purpose is: a kind of energy-saving freezing unit is provided, this unit has increased the supplementary heat exchanger that carries out heat exchange with the cooling device of condenser in the user load EGR, under the lower operating mode of environment temperature, can use supplementary heat exchanger and carry out the spontaneous transfer of heat, or cooperate that cold mechanism is cold to be used simultaneously, a large amount of electric energy have been saved, prolonged the service life of equipment, also adapted improves the reliability of cooling mutually.
The technical solution of the utility model is: a kind of energy-saving freezing unit, comprise cold EGR of cold mechanism and user load EGR, be connected with compressor and condenser in the cold EGR of cold mechanism, condenser is connected with cooling device, be connected with heat load and evaporimeter in the user load EGR, cold EGR of cold mechanism and user load EGR carry out heat exchange by evaporimeter, described user load EGR flows on the upstream position that is in evaporimeter at refrigerating medium and is connected with supplementary heat exchanger, supplementary heat exchanger and condenser are connected in parallel on the cooling device, make user's load cycle device and cooling device carry out heat exchange by supplementary heat exchanger.
The further technical scheme of the utility model is: a kind of energy-saving freezing unit, comprise cold EGR of cold mechanism and user load EGR, be connected with compressor and condenser in the cold EGR of cold mechanism, condenser is connected with cooling device, be connected with heat load and evaporimeter in the user load EGR, cold EGR of cold mechanism and user load EGR carry out heat exchange by evaporimeter, described user load EGR flows on the upstream position that is in evaporimeter at refrigerating medium and is connected with supplementary heat exchanger, supplementary heat exchanger and condenser are connected in parallel on the cooling device, make user's load cycle device and cooling device carry out heat exchange by supplementary heat exchanger; The refrigerating medium exit of the porch of described cooling device cooling medium, evaporimeter is respectively equipped with temperature sensor.
In the technique scheme:
The condenser of the cold EGR of described cold mechanism and the supplementary heat exchanger of user load EGR can a shared cooling tower or cooling blowers, and cooling tower is connected with electric T-shaped valve or cooling blower is equipped with adjustable damper, can be installed in the same housing.
The evaporimeter of the cold EGR of described cold mechanism and supplementary heat exchanger can shared air-blast devices, be installed in the same housing.
The utility model advantage is:
1. the utility model has increased supplementary heat exchanger in the user load EGR, supplementary heat exchanger and cooling device carry out heat exchange, the environment low-temperature receiver that can use cooling device under the lower operating mode of environment temperature carries out the spontaneous transfer of heat, or cooperate that cold mechanism is cold to be used simultaneously, a large amount of electric energy have been saved, prolonged the service life of equipment, also adapted improves the reliability of cooling mutually.
2. the utility model is on the basis of the cold circulation of cold mechanism, setting up the mode of nature cool cycles carries out with the auxiliary heat exchange, cooling device in the cold EGR of cold mechanism is furnished with cooling tower or blower fan etc., according to environment temperature, evaporator outlet refrigerant temperature being detected and judging, select the cold circulation pattern of cold mechanism nature cool cycles pattern or pattern that both carry out simultaneously.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is the structural representation of embodiment one;
Fig. 2 is the structural representation of embodiment two;
Fig. 3 is the structural representation of embodiment three;
Fig. 4 is a control flow schematic diagram of the present utility model.
Wherein: the cold EGR of 1 cold mechanism; 2 user load EGRs; 3 compressors; 4 condensers; 5 cooling devices; 6 heat loads; 7 evaporimeters; 8 supplementary heat exchangers; 9,10 temperature sensors; 12 cooling towers; 13 electric T-shaped valves; 14 cooling blowers; 15 air-blast devices.
The specific embodiment
Embodiment: as Fig. 1, Fig. 2, shown in Figure 3, a kind of energy-saving freezing unit, comprise cold EGR 1 of cold mechanism and user load EGR 2, be connected with compressor 3 and condenser 4 in the cold EGR 1 of cold mechanism, condenser 4 is connected with cooling device 5, be connected with heat load 6 in the user load EGR 2, evaporimeter 7 and supplementary heat exchanger 8, supplementary heat exchanger 8 is in the upstream position of evaporimeter 7 on refrigerating medium flows to, supplementary heat exchanger 8 and condenser 4 are connected in parallel on the cooling device 5, cold EGR 1 of cold mechanism and user load EGR 2 carry out heat exchange by evaporimeter 7, and user load EGR 2 and cooling device 5 carry out heat exchange by supplementary heat exchanger 8; The cooling medium porch of cooling device 5 and evaporimeter 7 refrigerating medium exits are respectively equipped with temperature sensor 9 and 10.
As shown in Figure 1, for the utility model is applied to the water-cooled handpiece Water Chilling Units, the cooling medium of condenser 4 is selected the recirculated water of cooling tower 12 for use, the medium that flows into supplementary heat exchanger 8 also adopts the recirculated water of cooling tower 12, article two, the shared cooling tower 12 of water supply loop is regulated and control the flow of two water route cycling use of waters in proportion by electric T-shaped valve 13.Discharge can realize unified logic control easily according to operational mode.
As shown in Figure 2, for the utility model is applied to air-cooled handpiece Water Chilling Units, the refrigerating medium of the cooling medium of condenser 4 and supplementary heat exchanger 8 is air, utilizes cooling blower 14 and air channel structure to produce air-flow, and the realization Forced Air Convection is carried out heat exchange.Cooling device 5 and supplementary heat exchanger 8 can structurally shared cooling blowers 14, also can constitute air circulating system separately respectively.Air quantity can be realized unified logic control easily according to operational mode.
As shown in Figure 3, for the utility model is applied to water-cooled cold wind unit: condenser 4 adopts cooling tower 12 coolings, evaporimeter 7 adopts the form of fan coil, the also available fan coil form of supplementary heat exchanger 8 its structures of increase (circulatory mediator in the pipe is the recirculated water of cooling tower).The recirculated water that the water of the cooling water of condenser 4 and supplementary heat exchanger 8 can shared cooling tower 12 provides; Set up the flow of two water route cycling use of waters in proportion by electric T-shaped valve 13.Discharge can realize unified logic control easily according to operational mode.Evaporimeter 7 and supplementary heat exchanger 8 all are the cooling ends, and can be integral on the structure also can shared air-blast device 15.
User load EGR 2 of the present utility model is carrying out on the basis of heat exchange with the cold EGR 1 of cold mechanism, having set up the supplementary heat exchanger 8 that carries out heat exchange with cooling device 5 exchanges with in good time auxiliary heat, the medium of cooling device 5 is two kinds of forms of free G﹠W, be furnished with cooling tower 12 or cooling blower 14, according to after the detection of environment temperature T1, evaporimeter 7 outlet refrigerant temperature T2 and judging, select cold circulation pattern of cold mechanism or natural cool cycles pattern or pattern cooling that both carry out simultaneously.
For the freezing unit of water-cooled: the water-flow circuit of cooling tower 12 is by the cooling water inflow of valve member control condenser 4 and the flow proportional of supplementary heat exchanger 8 (auxiliary cooling heat exchanger).The selection of system's cooling pattern and switching are to carry out according to the detection of evaporimeter refrigerating medium outlet temperature T2 and environment temperature T1 and judgement.
For the air cooled chiller group, air-cooler 14 simultaneously can be air-cooled to the condenser in the freeze cycle loop 4, also can carry out air-cooledly to supplementary heat exchanger 8, and the both sides air quantity can be controlled separately or unified control.Can be according to the outlet temperature T2 of evaporimeter 7, environment temperature T1 etc. select to start or switch the cooling pattern.
As shown in Figure 4, after the cold EGR 1 of cold mechanism started, control system at first detected and judges the environment temperature sensor T1 that is located in the cooling device 5 flow pipe roads, when T1≤T0 (user's request temperature)-Δ T1 (temperature deviation value, can set), then select auxiliary cool cycles pattern cooling.As T0-Δ T1＜T1＜T0, then select to start the cold circulation of cold mechanism and two kinds of cooling patterns of natural cool cycles cooling; As T1 〉=T0, only select the cold circulation of cold mechanism.After the Δ T time of setting, detect each TEMP actuator temperature and judge preference pattern, after this, the T2 value replaces the T0 value and carries out condition judgment, and so circulation is carried out.The condenser 4 of the cold EGR 1 of cold mechanism and the supplementary heat exchanger 8 of user load EGR 2 are with environment and carry out heat exchange, can be made of one formula on the structure and adopt same medium (water or air).
For the water-cooled unit, can adopt electric T-shaped valve 13 to regulate the ratio of the output in 12 pairs of two cooling loops of cooling tower automatically; For air-cooled unit, can realize the control of air quantity by controlling the start-stop or the volume damper of blower fan separately.The selection of three kinds of patterns will be set control logic according to needs, enable in good time or switch the cooling pattern.
With respect to the freezing unit of other plain edition, the utility model has only increased pipeline portions and temperature sensor and the valve member between supplementary heat exchanger 8 and supplementary heat exchanger 8 and the cooling device 5, has revised logic control program etc.
The utility model has increased supplementary heat exchanger 8, pipeline etc. on common freezing unit basis, the environment division of increase is less, thereby the consumption (only electricity charge annual reduces about 35%) of greatly having saved the energy and equipment has prolonged service life of equipment.The present invention compares single common refrigerator system, and structure does not have big change, and implements easily to jointly control co-ordination.Complete equipment can be finished in disposable manufacturing assembling, need not site operation, and does not rely on the purpose that other low-temperature receiver can realize that heat is shifted to external environment by client, and is energy-conservation and reliable.The present invention is widely used in water-cooled and air cooling refrigeration device.
The utility model structurally can be made into one with supplementary heat exchanger and condenser or supplementary heat exchanger and evaporimeter, and is simple, practicable shared to cooling tower and cooling blower.
Two kinds of heat exchange modes of the present utility model can be combined into three kinds of cooling patterns, select according to the detection and the judgement of associated temperature point, are easy to realize logic control.
The utility model is energy-conservation and reliable, and it is few to increase element, and complete machine can once be finished, no dependence, reliability height.
Claims (4)
1. energy-saving freezing unit, comprise cold EGR of cold mechanism (1) and user load EGR (2), be connected with compressor (3) and condenser (4) in the cold EGR of cold mechanism (1), condenser (4) is connected with cooling device (5), be connected with heat load (6) and evaporimeter (7) in the user load EGR (2), cold EGR of cold mechanism (1) and user load EGR (2) carry out heat exchange by evaporimeter (7), it is characterized in that: described user load EGR (2) flows on the upstream position that is in evaporimeter (7) at refrigerating medium and is connected with supplementary heat exchanger (8), supplementary heat exchanger (8) and condenser (4) are connected in parallel on the cooling device (5), make user's load cycle device (2) and cooling device (5) carry out heat exchange by supplementary heat exchanger (8).
2. energy-saving freezing unit according to claim 1 is characterized in that: the porch of described cooling device (5) cooling medium, the refrigerating medium exit of evaporimeter (7) are respectively equipped with temperature sensor (9,10).
3. energy-saving freezing unit according to claim 1, it is characterized in that: the condenser (4) of the cold EGR of described cold mechanism (1) and the supplementary heat exchanger (8) of user load EGR (2) can a shared cooling tower (12) or cooling blowers (14), and cooling tower (12) is connected with electric T-shaped valve (13) or cooling blower (14) connects air door, can be installed in the same housing.
4. energy-saving freezing unit according to claim 1 is characterized in that: the evaporimeter (7) of the cold EGR of described cold mechanism (1) and supplementary heat exchanger (8) can shared blower fans, be installed in the same housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620165437 CN200975800Y (en) | 2006-12-07 | 2006-12-07 | Energy-saving type freezing machine set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620165437 CN200975800Y (en) | 2006-12-07 | 2006-12-07 | Energy-saving type freezing machine set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200975800Y true CN200975800Y (en) | 2007-11-14 |
Family
ID=38902084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620165437 Expired - Fee Related CN200975800Y (en) | 2006-12-07 | 2006-12-07 | Energy-saving type freezing machine set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200975800Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103960356A (en) * | 2014-05-16 | 2014-08-06 | 湖北巨鹏厨房设备科技有限公司 | Energy-saving reserve material cooler |
| CN106225126A (en) * | 2016-08-29 | 2016-12-14 | 珠海格力电器股份有限公司 | A kind of refrigeration air-cooled unit and control method thereof |
-
2006
- 2006-12-07 CN CN 200620165437 patent/CN200975800Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103960356A (en) * | 2014-05-16 | 2014-08-06 | 湖北巨鹏厨房设备科技有限公司 | Energy-saving reserve material cooler |
| CN103960356B (en) * | 2014-05-16 | 2015-09-16 | 湖北巨鹏厨房设备科技有限公司 | Energy-conservation reserve cooler |
| CN106225126A (en) * | 2016-08-29 | 2016-12-14 | 珠海格力电器股份有限公司 | A kind of refrigeration air-cooled unit and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SUZHOU QUTU THERMAL CONTROL SYSTEM CO., LTD. Free format text: FORMER NAME: SUZHOU QUTU REFRIGERATOR CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Suzhou City, Jiangsu province 215126 Industrial Park Sheng Pu Zhen Min Sheng Road No. 61 Patentee after: Suzhou Qutu Thermal Control System Co., Ltd. Address before: Suzhou City, Jiangsu province 215126 Industrial Park Sheng Pu Zhen Min Sheng Road No. 61 Patentee before: Suzhou Qutu Refrigerator Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071114 Termination date: 20121207 |