CN205678963U - A kind of high-low pressure is than controlled refrigeration system - Google Patents
A kind of high-low pressure is than controlled refrigeration system Download PDFInfo
- Publication number
- CN205678963U CN205678963U CN201620540905.2U CN201620540905U CN205678963U CN 205678963 U CN205678963 U CN 205678963U CN 201620540905 U CN201620540905 U CN 201620540905U CN 205678963 U CN205678963 U CN 205678963U
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- pressure sensor
- low pressure
- refrigeration system
- compressor
- expansion valve
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- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The utility model discloses a kind of high-low pressure than controlled refrigeration system, including condenser, heat exchanger, cold-producing medium, compressor, expansion valve, the first pressure sensor and the second pressure sensor, wherein, described condenser, described expansion valve, described heat exchanger and described compressor are sequentially communicated composition loop for described refrigerant circulation circulation；Described first pressure sensor and described second pressure sensor are separately positioned on described compressor both sides.The utility model can effectively control high-low pressure ratio, and upper handpiece Water Chilling Units operates in safety zone.
Description
Technical field
The utility model relates to refrigeration system.
Background technology
Refrigeration system provides cold air, has been applied to life, the every aspect producing, there is various technical problem.Wherein, cold
Water unit high-low pressure is than the initial start stage usually occurring in unit, and freezing temperature is high, and coolant water temperature is low.And this problem is to institute
The handpiece Water Chilling Units having compressor types all can produce impact, affects the stable operation of unit.It is listed below:
1) helical-lobe compressor handpiece Water Chilling Units: it is strong that the internal lubrication of helical-lobe compressor needs certain height pressure reduction to carry out machinery
System circulation.When high-low pressure ratio, the internal lubricating system of helical-lobe compressor will appear from problem.
2) oil-free centrifugal compressor handpiece Water Chilling Units: such compressor, owing to being high-speed electric expreess locomotive, built-in DC frequency-changing
Device, therefore, to assure that cooling system is working properly.Working properly in order to ensure cooling system, refrigeration system needs to ensure certain height
Low-pressure ratio, otherwise cooling liquid measure is by deficiency, causes reporting to the police.
3) scroll compressor handpiece Water Chilling Units: when high-low pressure ratio is when on the low side, evaporating temperature is high, and capacity is big, a large amount of refrigeration oils
To discharge therewith, and will appear from throwing oil problem.Meanwhile, when evaporating temperature is high, when capacity is big, the operation noise of compressor will increase
Greatly.
So, how effectively controlling high-low pressure ratio is a problem needing to solve.
Content of the invention
The purpose of this utility model is to provide a kind of refrigeration system, can effectively control high-low pressure ratio, upper handpiece Water Chilling Units
Operate in safety zone.
The technical scheme realizing above-mentioned purpose is:
A kind of high-low pressure than controlled refrigeration system, including condenser, heat exchanger, cold-producing medium, compressor, expansion valve,
One pressure sensor and the second pressure sensor, wherein,
Described condenser, described expansion valve, described heat exchanger and described compressor are sequentially communicated composition loop for described system
Refrigerant cycle circulates；
Described first pressure sensor and described second pressure sensor are separately positioned on described compressor both sides.
At above-mentioned high-low pressure ratio in controlled refrigeration system, described expansion valve is hand expansion valve.
At above-mentioned high-low pressure ratio in controlled refrigeration system, described expansion valve is electric expansion valve.
, also include in controlled refrigeration system at above-mentioned high-low pressure ratio:
It is electrically connected described first pressure sensor and the analog-digital converter of described second pressure sensor；And
Electrically connect the display screen of described analog-digital converter.
The beneficial effects of the utility model are: the utility model effectively controls cooling-water machine by the aperture controlling expansion valve
The high-low pressure ratio of group so that unit operation is in safety zone.
Brief description
Fig. 1 is the structure chart than controlled refrigeration system for the high-low pressure of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Referring to Fig. 1, high-low pressure of the present utility model is than controlled refrigeration system, including the 2nd, condenser the 1st, heat exchanger freezes
Agent (not shown), compressor the 3rd, expansion valve the 4th, the first pressure sensor 5 and the second pressure sensor 6.
Condenser the 1st, expansion valve the 4th, heat exchanger 2 and compressor 3 are sequentially communicated composition loop and circulate for refrigerant circulation.
First pressure sensor 5 and the second pressure sensor 6 are separately positioned on compressor 3 both sides, are used for gathering high pressure letter
Number and low-voltage signal, be then transferred to analog-digital converter 7 and be converted to data signal, finally in display screen 8 show.
By the ratio of acquisition high pressure and low-pressure, and control opening/closing of expansion valve 4 on this basis, regulate height
Low-pressure ratio so that unit operation is in safety zone.In the present embodiment, expansion valve 4 is hand expansion valve or electric expansion valve.
Above example is only for illustration of the utility model, rather than to restriction of the present utility model, relevant technical field
Technical staff, without departing from of the present utility model spirit in the case of, can also make various conversion or modification, therefore own
Equivalent technical scheme also should belong to category of the present utility model, should be limited by each claim.
Claims (4)
1. a high-low pressure is than controlled refrigeration system, it is characterised in that include condenser, heat exchanger, cold-producing medium, compressor,
Expansion valve, the first pressure sensor and the second pressure sensor, wherein,
Described condenser, described expansion valve, described heat exchanger and described compressor are sequentially communicated composition loop for described cold-producing medium
Circulation；
Described first pressure sensor and described second pressure sensor are separately positioned on described compressor both sides.
2. high-low pressure according to claim 1 is than controlled refrigeration system, it is characterised in that described expansion valve is manually swollen
Swollen valve.
3. high-low pressure according to claim 1 is than controlled refrigeration system, it is characterised in that described expansion valve is that electronics is swollen
Swollen valve.
4. high-low pressure according to claim 1 is than controlled refrigeration system, it is characterised in that also include:
It is electrically connected described first pressure sensor and the analog-digital converter of described second pressure sensor；And
Electrically connect the display screen of described analog-digital converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620540905.2U CN205678963U (en) | 2016-06-06 | 2016-06-06 | A kind of high-low pressure is than controlled refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620540905.2U CN205678963U (en) | 2016-06-06 | 2016-06-06 | A kind of high-low pressure is than controlled refrigeration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205678963U true CN205678963U (en) | 2016-11-09 |
Family
ID=57434494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620540905.2U Active CN205678963U (en) | 2016-06-06 | 2016-06-06 | A kind of high-low pressure is than controlled refrigeration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205678963U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403334A (en) * | 2016-09-13 | 2017-02-15 | 克莱门特捷联制冷设备(上海)有限公司 | Refrigerating system capable of performing optimizing control on pressure ratio of water chilling unit |
| CN110332742A (en) * | 2019-07-08 | 2019-10-15 | 广东Tcl智能暖通设备有限公司 | Hot water apparatus and heat pump system control method, heat pump system control device |
-
2016
- 2016-06-06 CN CN201620540905.2U patent/CN205678963U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403334A (en) * | 2016-09-13 | 2017-02-15 | 克莱门特捷联制冷设备(上海)有限公司 | Refrigerating system capable of performing optimizing control on pressure ratio of water chilling unit |
| CN110332742A (en) * | 2019-07-08 | 2019-10-15 | 广东Tcl智能暖通设备有限公司 | Hot water apparatus and heat pump system control method, heat pump system control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |