CN203615665U - Antifreezing water chilling unit - Google Patents
Antifreezing water chilling unit Download PDFInfo
- Publication number
- CN203615665U CN203615665U CN201320802524.3U CN201320802524U CN203615665U CN 203615665 U CN203615665 U CN 203615665U CN 201320802524 U CN201320802524 U CN 201320802524U CN 203615665 U CN203615665 U CN 203615665U
- Authority
- CN
- China
- Prior art keywords
- evaporimeter
- freezing
- condenser
- refrigeration compressor
- evaporator
- 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.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000007710 freezing Methods 0.000 claims abstract description 24
- 238000005057 refrigeration Methods 0.000 claims abstract description 15
- 239000000498 cooling water Substances 0.000 claims description 10
- 239000002826 coolant Substances 0.000 claims description 3
- 230000008014 freezing Effects 0.000 abstract description 16
- 239000012809 cooling fluid Substances 0.000 abstract 1
- 238000005336 cracking Methods 0.000 abstract 1
- 230000009172 bursting Effects 0.000 description 9
- 238000001704 evaporation Methods 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The utility model discloses an antifreezing water chilling unit which comprises a refrigeration compressor, a condenser, a throttling valve and an evaporator. The refrigeration compressor, the condenser, the throttling valve and the evaporator are sequentially connected to form a cooling fluid loop, and a pipeline between the refrigeration compressor and the condenser is connected with a branch pipeline which is connected with the evaporator through an electromagnetic valve. The electromagnetic valve just needs to be opened to enable hot air to go into the evaporator, the inside of the evaporator can be prevented from freezing and cracking due to freezing, normal continuous operation of the water chilling unit can be guaranteed, and secondary loss of users is avoided.
Description
Technical field
The utility model relates to a kind of anti-freezing cold water unit, belongs to field of mechanical technique.
Background technology
In prior art, water chiller is generally that the refrigerant gas of the HTHP of discharging by compressor enters condenser by pipeline, by condensation of refrigerant being become to liquid with cooling water heat exchange, flowing to choke valve by pipeline again carries out entering evaporimeter after step-down cooling throttling, in evaporimeter, carry out heat exchange with the chilled water that enters evaporimeter, after the cold-producing medium draw heat evaporation of low temperature, get back to compressor by pipeline again, complete a kind of refrigeration cycle, and the water that enters evaporimeter siphons away because of cooled dose of heat, temperature is reduced to user's serviceability temperature, supply with user by delivery port again.
In use procedure, chilled water often can be subject to customer charge in using at the scene, and the factor impact such as discharge is unstable and cause water temperature too low, total institute is known, water can freeze in lower than 0 degree Celsius, when chilled water is too low or lower than the situation of 0 degree Celsius under can exert an influence to the evaporimeter of handpiece Water Chilling Units, the heat exchanger tube of meeting bursting by freezing evaporimeter, handpiece Water Chilling Units is damaged, seriously can make whole equipment scrapping, the antifreezing measures of common handpiece Water Chilling Units are only to detect the temperature of freezing water outlet by cooling-water temperature sensor, if water temperature is too low, the output module of PLC can provide signal, at once stop refrigeration compressor, although now stopped supply cold-producing medium, but a large amount of cold-producing mediums that have in evaporimeter continue evaporation and siphon away heat, cause freezing temperature more and more lower, still can freezing freezing unit.This kind of antifreezing measures still have very large risk.
Utility model content
Utility model object: the purpose of this utility model is in order to solve above the deficiencies in the prior art, and a kind of anti-freezing cold water unit is provided.
Technical scheme: anti-freezing cold water unit described in the utility model, its objective is such realization, a kind of anti-freezing cold water unit, comprise refrigeration compressor, condenser, choke valve, evaporimeter, described refrigeration compressor, condenser, choke valve, evaporimeter connect and compose coolant circuit successively, and described refrigeration compressor is connected with evaporimeter through magnetic valve to separating a pipeline on the pipeline of condenser.
The delivery port of described evaporimeter is provided with cooling-water temperature sensor, and cooling-water temperature sensor is connected with PLC controller, and described magnetic valve is also connected with PLC controller.
Operation principle: when chilled water temperature is lower than 3 degrees Celsius of (anti-frost protection value-at-risks, there is bursting by freezing risk lower than representative, higher than not having) time, handpiece Water Chilling Units judges that the cold-producing medium evaporating temperature in this evaporimeter is lower, chilled water has the risk of icing bursting by freezing evaporimeter, now magnetic valve is opened, the cold-producing medium gaseous state of high temperature enters into evaporimeter, refrigerant temperature in evaporimeter is promoted, thereby the temperature increase of chilled water, to temperature more than anti-frost protection value-at-risk, is produced to the risk of bursting by freezing thereby avoid chilled water to freeze to evaporimeter;
The PLC controller that whole process is carried by handpiece Water Chilling Units is controlled; the built-in sub-acquisition module of PLC carrys out collecting temperature by the cooling-water temperature sensor being placed on chilled water outlet conduit; analyze and judge whether to exist the risk of bursting by freezing evaporimeter through the internal arithmetic of PLC controller; if the chilled water temperature detecting is lower than anti-frost protection value-at-risk; by built-in sub-output module output signal; driving magnetic valve is opened, and makes high temperature refrigerant gas enter evaporimeter, thereby avoids bursting by freezing.
Beneficial effect: mill run is when freezing temperature is lower, normally stop refrigeration compressor and avoid evaporimeter by bursting by freezing, but there is very big risk and use inconvenience, first in this kind of way, conventionally shut down cold-producing medium in finisher still in evaporation, still can be very large may bursting by freezing evaporimeter; The second, cooling-water machine has stopped exporting chilled water to user after shutting down, and what can cause user uses and produce unexpected interruption, causes linksystem loss.
The utility model only needs opens solenoid valve, allows hot gas enter evaporimeter, and the bursting by freezing that can guarantee can not freeze in evaporimeter, can guarantee again the normal continual operation of handpiece Water Chilling Units simultaneously, can not cause quadratic loss to user.
Accompanying drawing explanation
Fig. 1 is the water chiller structural representation of prior art;
Fig. 2 is structural representation of the present utility model.
The specific embodiment
In order to deepen understanding of the present utility model, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, and this embodiment only, for explaining the utility model, does not form the restriction to the utility model protection domain.
Shown in Figure 2, a kind of anti-freezing cold water unit, comprise refrigeration compressor 1, condenser 2, choke valve 3, evaporimeter 4, described refrigeration compressor 1, condenser 2, choke valve 3, evaporimeter 4 connect and compose coolant circuit successively, and described refrigeration compressor 1 is connected with evaporimeter 4 through magnetic valve 5 to separating a pipeline on the pipeline of condenser 2.
The delivery port of described evaporimeter 4 is provided with cooling-water temperature sensor 6, and cooling-water temperature sensor 6 is connected with PLC controller 7, and described magnetic valve 5 is also connected with PLC controller 7.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (2)
1. an anti-freezing cold water unit, comprise refrigeration compressor, condenser, choke valve, evaporimeter, described refrigeration compressor, condenser, choke valve, evaporimeter connect and compose coolant circuit successively, it is characterized in that, described refrigeration compressor is connected with evaporimeter through magnetic valve to separating a pipeline on the pipeline of condenser.
2. anti-freezing cold water unit according to claim 1, is characterized in that, the delivery port of described evaporimeter is provided with cooling-water temperature sensor, and cooling-water temperature sensor is connected with PLC controller, and described magnetic valve is also connected with PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320802524.3U CN203615665U (en) | 2013-12-06 | 2013-12-06 | Antifreezing water chilling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320802524.3U CN203615665U (en) | 2013-12-06 | 2013-12-06 | Antifreezing water chilling unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203615665U true CN203615665U (en) | 2014-05-28 |
Family
ID=50768303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320802524.3U Expired - Lifetime CN203615665U (en) | 2013-12-06 | 2013-12-06 | Antifreezing water chilling unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203615665U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135772A (en) * | 2015-08-06 | 2015-12-09 | 佛山市顺德区美的饮水机制造有限公司 | Water cooling device and control method for preventing cold water from freezing |
| CN107131598A (en) * | 2017-06-14 | 2017-09-05 | 四川依米康环境科技股份有限公司 | A kind of cooling water air conditioner system |
| CN107401864A (en) * | 2017-09-08 | 2017-11-28 | 珠海格力电器股份有限公司 | Antifreeze cooling system and antifreeze cooling control method |
-
2013
- 2013-12-06 CN CN201320802524.3U patent/CN203615665U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135772A (en) * | 2015-08-06 | 2015-12-09 | 佛山市顺德区美的饮水机制造有限公司 | Water cooling device and control method for preventing cold water from freezing |
| CN105135772B (en) * | 2015-08-06 | 2017-10-27 | 佛山市顺德区美的饮水机制造有限公司 | Water refrigerating plant and its control method for preventing cold water from freezing |
| CN107131598A (en) * | 2017-06-14 | 2017-09-05 | 四川依米康环境科技股份有限公司 | A kind of cooling water air conditioner system |
| CN107401864A (en) * | 2017-09-08 | 2017-11-28 | 珠海格力电器股份有限公司 | Antifreeze cooling system and antifreeze cooling control method |
| CN107401864B (en) * | 2017-09-08 | 2023-09-19 | 珠海格力电器股份有限公司 | Anti-freezing cooling system and anti-freezing cooling 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: 20140528 |
|
| CX01 | Expiry of patent term |