CN202734095U - Central air conditioning refrigeration unit - Google Patents
Central air conditioning refrigeration unit Download PDFInfo
- Publication number
- CN202734095U CN202734095U CN 201220433392 CN201220433392U CN202734095U CN 202734095 U CN202734095 U CN 202734095U CN 201220433392 CN201220433392 CN 201220433392 CN 201220433392 U CN201220433392 U CN 201220433392U CN 202734095 U CN202734095 U CN 202734095U
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- China
- Prior art keywords
- compressor
- evaporimeter
- outlet
- refrigerant
- condenser
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Abstract
The utility model is applicable to the technical field of refrigeration equipment and provides a central air conditioning refrigeration unit. The central air conditioning refrigeration unit is provided with a compressor, wherein an outlet of the compressor is connected with a refrigerant inlet of a condenser; a refrigerant outlet of the condenser is connected with a refrigerant inlet of an evaporator; a refrigerant outlet of the evaporator is connected with an inlet of the compressor; the evaporator is provided with an opening; the opening is connected with a bypass pipeline for introducing high-pressure refrigerant in the condenser into the evaporator; the bypass pipeline is provided with an electromagnetic valve for controlling the switching on/off of the bypass pipeline; the evaporator is provided with a temperature sensor for detecting the temperature of outlet water; the temperature sensor and the electromagnetic valve are connected with a control system; one end of the bypass pipeline is connected on a pipeline between the outlet of the compressor and the refrigerant inlet of the condenser; and the other end of the bypass pipeline is connected on a pipeline between the inlet of the compressor and the refrigerant outlet of the evaporator. According to the utility model, the evaporator is effectively prevented from being frozen, and the service life of the refrigeration unit is prolonged.
Description
Technical field
The utility model belongs to technical field of refrigeration equipment, relates in particular to a kind of Central Air-condition Refrigerator group.
Background technology
At present, in many high-rises, the central air-conditioning unit is used more, and mostly be full-liquid type central air-conditioning unit, the problem that the application of this unit exists evaporimeter to freeze, evaporimeter is the parts that carry out heat exchange, be provided with heat exchanger tube in the evaporimeter, heat exchange between the cold-producing medium that passes through flowing water and flow of evaporimeter with the heat transferred cold-producing medium of water, makes the drop in temperature of water, cause evaporimeter to freeze, especially under the heating condition, the temperature of working environment own is lower in the winter time for full-liquid type ground-source heat pump central air-conditioning unit, and absorbs the heat of water in the evaporimeter during gasification of the cold-producing medium in the evaporimeter, make evaporimeter be easier to freeze, the consequence that evaporimeter freezes to cause is very serious, gently then shortens unit service life, and is heavy then cause unit to lose using function thoroughly to scrap.
The utility model content
The purpose of this utility model is to provide a kind of Central Air-condition Refrigerator group, is intended to solve because evaporimeter freezes to cause the problem of air-conditioning unit cisco unity malfunction.
The utility model is to realize like this, a kind of Central Air-condition Refrigerator group, described Central Air-condition Refrigerator group is provided with compressor, the outlet of described compressor connects the refrigerant inlet of condenser, the refrigerant outlet of described condenser connects the refrigerant inlet of evaporimeter, the refrigerant outlet of described evaporimeter connects the import of described compressor, described evaporimeter is provided with an opening, described opening connection one passes into the high-pressure refrigerant in the condenser bypass line of described evaporimeter, described bypass line is provided with the magnetic valve of control bypass line break-make, described evaporimeter is provided with the temperature sensor that detects coolant-temperature gage, described temperature sensor is connected a control system with magnetic valve, one end of described bypass line connects in the outlet and the pipeline between the condenser refrigerant inlet of described compressor, and the other end is connected in the import and the pipeline between the evaporator refrigerant outlet of described compressor.
In the utility model, at the leaving water temperature of evaporimeter during in setting value, close compressor and expansion valve, by opening this bypass line high-pressure refrigerant is passed into evaporimeter, improve the evaporating temperature of cold-producing medium, slow down underspeeding of water temperature, keep the water in the evaporimeter to continue to flow, until the water temperature in the evaporimeter when arriving uniform temperature, just restart compressor, thereby the device that avoids evaporating freezes.
Description of drawings
Fig. 1 is the structural representation of the Central Air-condition Refrigerator group that provides of the utility model.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the utility model.
Fig. 1 shows the structural representation of the Central Air-condition Refrigerator group that the utility model provides, and for convenience of explanation, has only provided the part relevant with the utility model among the figure.
The Central Air-condition Refrigerator group that the utility model provides is provided with compressor 1, the outlet of described compressor 1 connects the refrigerant inlet of condenser 2, the refrigerant outlet of described condenser 2 connects the refrigerant inlet of evaporimeter 3, the refrigerant outlet of described evaporimeter 3 connects the import of described compressor 1, described evaporimeter 3 is provided with an opening, described opening connection one passes into the high-pressure refrigerants in the condenser 2 bypass line 4 of described evaporimeter 3, described bypass line 4 is provided with the magnetic valve 5 of control bypass line 4 break-makes, described evaporimeter 3 is provided with the temperature sensor (not shown) that detects coolant-temperature gage, described temperature sensor is connected with magnetic valve and is connected a control system, one end of described bypass line 4 connects in the outlet and the pipeline between condenser 2 refrigerant inlet of described compressor 1, and the other end is connected in the import and the pipeline between evaporimeter 3 refrigerant outlets of described compressor 1.
Certainly, in this embodiment, can also comprise miscellaneous part, not repeat them here, but not in order to limit value the utility model.
In the utility model, magnetic valve was in closed condition when unit normally moved, the high-pressure refrigerant that compressor produces can not enter evaporimeter by bypass line, when the temperature of the water outlet of temperature sensor sensing evaporator is lower than certain setting value, control module control compressor shutdown, and magnetic valve opened, therefore the cold-producing medium of high pressure enters evaporimeter by bypass line, pressure rise in the evaporimeter, improved the boiling point of the cold-producing medium in the evaporimeter, slowed down the evaporation endothermic of cold-producing medium, slowed down the decrease speed of water temperature in the evaporimeter, and the water in the evaporimeter continues the mobile temperature that improves water in the evaporimeter, be higher than when setting value when temperature sensor detects temperature, compressor is worked again, thereby has prevented that effectively evaporimeter from freezing when operation, and when unit had a power failure, magnetic valve also can be opened the decrease speed of slowing down water temperature; And owing to enter the new boil down to high pressure of weight of compressor after the cold-producing medium gasification heat absorption in the evaporimeter; air pressure under the evaporimeter normal operating condition in the evaporimeter is very low; therefore the pressure reduction of the import of compressor and outlet is very large; and this bypass line is when compressor shutdown; the high-pressure refrigerant at compressor outlet place is imported in the evaporimeter; balance the gaseous pressure of compressor outlet and import; make the compressor start moment of torsion less; starting current is less; start the next time that is easy to unit, optimized the running status of unit.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (1)
1. Central Air-condition Refrigerator group, it is characterized in that, described Central Air-condition Refrigerator group is provided with compressor, the outlet of described compressor connects the refrigerant inlet of condenser, the refrigerant outlet of described condenser connects the refrigerant inlet of evaporimeter, the refrigerant outlet of described evaporimeter connects the import of described compressor, described evaporimeter is provided with an opening, described opening connection one passes into the high-pressure refrigerant in the condenser bypass line of described evaporimeter, described bypass line is provided with the magnetic valve of control bypass line break-make, described evaporimeter is provided with the temperature sensor that detects coolant-temperature gage, described temperature sensor is connected a control system with magnetic valve, one end of described bypass line connects in the outlet and the pipeline between the condenser refrigerant inlet of described compressor, and the other end is connected in the import and the pipeline between the evaporator refrigerant outlet of described compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220433392 CN202734095U (en) | 2012-08-29 | 2012-08-29 | Central air conditioning refrigeration unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220433392 CN202734095U (en) | 2012-08-29 | 2012-08-29 | Central air conditioning refrigeration unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202734095U true CN202734095U (en) | 2013-02-13 |
Family
ID=47659790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220433392 Expired - Fee Related CN202734095U (en) | 2012-08-29 | 2012-08-29 | Central air conditioning refrigeration unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202734095U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318460A (en) * | 2015-10-15 | 2016-02-10 | 珠海格力电器股份有限公司 | Control system, control method and water chilling unit using control system and control method |
-
2012
- 2012-08-29 CN CN 201220433392 patent/CN202734095U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318460A (en) * | 2015-10-15 | 2016-02-10 | 珠海格力电器股份有限公司 | Control system, control method and water chilling unit using control system and control method |
| CN105318460B (en) * | 2015-10-15 | 2018-01-23 | 珠海格力电器股份有限公司 | Control system, control method and apply its handpiece Water Chilling Units |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20130829 |