CN203500010U - Start volume control device of refrigeration screw compressor - Google Patents
Start volume control device of refrigeration screw compressor Download PDFInfo
- Publication number
- CN203500010U CN203500010U CN201320590472.8U CN201320590472U CN203500010U CN 203500010 U CN203500010 U CN 203500010U CN 201320590472 U CN201320590472 U CN 201320590472U CN 203500010 U CN203500010 U CN 203500010U
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- CN
- China
- Prior art keywords
- pass line
- solenoid valve
- control device
- volume control
- lobe compressor
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- 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
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Abstract
The utility model relates to a start volume control device of a refrigeration screw compressor. The start volume control device of the refrigeration screw compressor comprises a shell and a screw rotor arranged in the shell, wherein a suction cavity is arranged at the front end of the screw rotor; an exhaust cavity is arranged at the rear end of the screw rotor. The start volume control device is characterized in that the exhaust cavity is respectively provided with a first bypass line and a second bypass line in parallel; the other ends of the first bypass line and the second bypass line are connected with the suction cavity through a pipe joint; the first bypass line is provided with a first electromagnetic valve; the second bypass line is provided with a second electromagnetic valve. The start volume control device has the advantages of being high in operation reliability and long in service life.
Description
Technical field
The utility model relates to a kind of refrigeration helical-lobe compressor technical field, especially relates to a kind of starting capacity controlling device of the helical-lobe compressor that freezes.
Background technique
In order to realize the clean boot of refrigeration helical-lobe compressor low-load, air displacement when the starting capacity controlling device of existing screw bolt refrigerant helical-lobe compressor adopts guiding valve to regulate refrigeration helical-lobe compressor to start mostly, because guiding valve is moving element, in work, can produce wearing and tearing, often break down, functional reliability is poor, and working life is shorter.
Model utility content
Technical problem to be solved in the utility model is the situation for prior art, provides a kind of simple in structure, the starting capacity controlling device of the refrigeration helical-lobe compressor that operational reliability is higher and working life is longer.
The utility model solves the problems of the technologies described above adopted technological scheme: a kind of starting capacity controlling device of the helical-lobe compressor that freezes, comprise housing and be arranged on the screw rotor in housing, this screw rotor front end arranges air aspiration cavity, rear end arranges exhaust cavity, it is characterized in that: described exhaust cavity is set up in parallel respectively the first by-pass line and the second bypass tube way, the other end of described the first by-pass line and described the second by-pass line is connected with air aspiration cavity by pipe joint, described the first by-pass line is provided with the first solenoid valve, described the second by-pass line is provided with the second solenoid valve.
Described the first solenoid valve and described the second solenoid valve all can be controlled separately and opened or close by control gear respectively.
The utility model compared with prior art, the setting that the exhaust cavity of refrigeration helical-lobe compressor has adopted two-way bypass line to communicate with air aspiration cavity, the capacity regulating when switch by solenoid valve reaches refrigeration helical-lobe compressor and starts, realizes refrigeration helical-lobe compressor Low loading start up.Have simple in structure, the advantage of the high and long service life of operational reliability.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
Fig. 1 illustrates a mode of execution of the present utility model, and it comprises housing 1 and is arranged on the screw rotor 3 in housing 1.These screw rotor 3 front ends arrange air aspiration cavity 8, and rear end arranges exhaust cavity 9; This exhaust cavity 9 arranges a relief opening 10; Gas enters from air aspiration cavity, after screw rotor compression, by the relief opening of exhaust cavity, discharges.
Described exhaust cavity 9 is set up in parallel respectively the first by-pass line 4 and the second by-pass line 6, and the other end of this first by-pass line 4 and the second by-pass line 6 is connected with air aspiration cavity 8 by pipe joint.Described the first by-pass line 4 is provided with the first solenoid valve 5, and described the second by-pass line 6 is provided with the second solenoid valve 7.
Described the first solenoid valve 5 and described the second solenoid valve 7 all can be controlled separately and opened or close by control gear respectively.
The utility model adopts two-way by-pass line to substitute the capacity regulating device that guiding valve is realized Low loading start up.By the switch of solenoid valve, control the gas flow that flows to air aspiration cavity from exhaust cavity, thereby regulate starting power size.
The refrigeration helical-lobe compressor start-up course that two-way by-pass line is set is as follows: first, before refrigeration helical-lobe compressor starts, the first solenoid valve and the energising of the second solenoid valve, the pressurized gas of exhaust cavity flow into air aspiration cavity by the first by-pass line and the second by-pass line, the gas of now discharging from relief opening is 33% of screw rotor suction gas, thereby realizes refrigeration helical-lobe compressor at 33% Low loading start up; The second, at refrigeration helical-lobe compressor, start a period of time, close the first solenoid valve, now, refrigeration helical-lobe compressor is 66% load operation; Finally, the first solenoid valve and the second solenoid valve are all closed, and realize oepration at full load.The utility model, in refrigeration helical-lobe compressor start-up course, can be realized refrigeration helical-lobe compressor Low loading start up, and the helical-lobe compressor start-up course that guarantees to freeze is steady and safety, starts good reliability.
Claims (2)
1. the starting capacity controlling device of the helical-lobe compressor that freezes, comprise housing and be arranged on the screw rotor in housing, this screw rotor front end arranges air aspiration cavity, rear end arranges exhaust cavity, it is characterized in that: described exhaust cavity (9) is set up in parallel respectively the first by-pass line (4) and the second by-pass line (6), the other end of described the first by-pass line (4) and described the second by-pass line (6) is connected with air aspiration cavity (8) by pipe joint, described the first by-pass line (4) is provided with the first solenoid valve (5), and described the second by-pass line (6) is provided with the second solenoid valve (7).
2. freeze the according to claim 1 starting capacity controlling device of helical-lobe compressor, is characterized in that: described the first solenoid valve (5) and described the second solenoid valve (7) all can be controlled separately and opened or close by control gear respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320590472.8U CN203500010U (en) | 2013-09-16 | 2013-09-16 | Start volume control device of refrigeration screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320590472.8U CN203500010U (en) | 2013-09-16 | 2013-09-16 | Start volume control device of refrigeration screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500010U true CN203500010U (en) | 2014-03-26 |
Family
ID=50330994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320590472.8U Expired - Lifetime CN203500010U (en) | 2013-09-16 | 2013-09-16 | Start volume control device of refrigeration screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500010U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593874A (en) * | 2016-12-28 | 2017-04-26 | 珠海格力电器股份有限公司 | Transition mounting component cooperating with valve, and compressor with component |
| CN107514363A (en) * | 2017-08-28 | 2017-12-26 | 珠海格力电器股份有限公司 | Helical-lobe compressor and its capacity regulating device and capacity regulation method, air-conditioning system |
-
2013
- 2013-09-16 CN CN201320590472.8U patent/CN203500010U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593874A (en) * | 2016-12-28 | 2017-04-26 | 珠海格力电器股份有限公司 | Transition mounting component cooperating with valve, and compressor with component |
| CN106593874B (en) * | 2016-12-28 | 2019-01-04 | 珠海格力电器股份有限公司 | With the transition installation component of valve cooperation and with the compressor of the component |
| CN107514363A (en) * | 2017-08-28 | 2017-12-26 | 珠海格力电器股份有限公司 | Helical-lobe compressor and its capacity regulating device and capacity regulation method, air-conditioning system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 315505 Zhejiang Province, Ningbo city Fenghua District streets Xiwu Shang Qiao Road No. 18 Patentee after: NINGBO BAOSI ENERGY EQUIPMENT Co.,Ltd. Address before: 315505 Zhejiang province Fenghua city streets Xiwu Shang Qiao Road No. 18 Patentee before: NINGBO BAOSI ENERGY EQUIPMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140326 |