CN204283792U - Compressor return air pipe liquid-jet device - Google Patents
Compressor return air pipe liquid-jet device Download PDFInfo
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- CN204283792U CN204283792U CN201420602769.6U CN201420602769U CN204283792U CN 204283792 U CN204283792 U CN 204283792U CN 201420602769 U CN201420602769 U CN 201420602769U CN 204283792 U CN204283792 U CN 204283792U
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- return air
- air pipe
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- pipe
- compressor
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Abstract
The utility model discloses a kind of compressor return air pipe liquid-jet device, include hydrojet coil pipe, compressor return air pipe, compressor, capillary tube, filter and solenoid valve, hydrojet coil pipe is spirally coiled in the outside of compressor return air pipe, and be close on the periphery of compressor return air pipe, it is upper that one end of hydrojet coil pipe cuts across on compressor return air pipe from top to down, lower flanging bore, and end part seal, the tube wall being positioned at the hydrojet coil pipe of compressor return air pipe is provided with one or more spray-hole, one or more spray-hole towards the return-air direction contrary with compressor, the other end of hydrojet coil pipe is connected with one end of capillary tube, and the other end of capillary tube is connected with solenoid valve with filter successively.The utility model is mainly used in Large Scale Cold liquid machine and large-size air conditioning, usually require spaces compact, reliability is high, simultaneously when running into the special circumstances such as high-temperature high-load, heat transfer and control section refrigeration agent can be utilized to carry out quick cooling compressor return-air, avoid generation overheated.
Description
Technical field
The utility model relates to refrigeration technology field, specifically a kind of compressor return air pipe liquid-jet device.
Background technique
Large Scale Cold liquid machine or air-conditioning obtain fast development in recent years, and its product function, performance index, control technique and safety protection etc. constantly promote thereupon.At present, Large Scale Cold liquid machine or air-conditioning are widely used in the industries such as power electronics, military affairs and aviation, power station, Laser Equipment, cabinet-type air conditioner cooling, semiconductor equipment and supercomputer.Special in vehicle-mounted, carrier-borne cold liquid machine or field of air conditioning, under usually requiring little in boundary dimension of lightweight prerequisite, very strong environmental suitability and very wide operating range be had.Such as, in the face of high-temperature high-load condition, compressor in cold liquid machine or air-conditioning is in hard service usually, the factor such as need to control delivery temperature, suction temperature, high-low pressure, oil pressure difference and motor overload is overheated, in the operating range allowing compressor be in bear, guarantee product reliably working.Wherein, the too high meeting of suction temperature causes compressor exhaust temperature too high, motor winding insulation declines, the even unfavorable factor such as lubricant oil carbonization, and suction temperature depends on evaporating temperature and the degree of superheat when system cloud gray model, suction temperature generally can not be caused too high at normal temperature environment, but often occur when hot environment, high load.For this reason, common way 1. increases bypass solenoid valve, hydrojet expansion valve and connecting tube to the direct Liquid injection cooling of muffler, and arrange larger gas-liquid separator etc. simultaneously, can take larger space, reliability also can decline; 2. increase return-air heat exchanger, the latus rectum being generally greater than the compressor return air pipe of 100kW is how comparatively large, can take larger space equally when realizing.
Summary of the invention
The purpose of this utility model to solve the deficiency that prior art exists, and provides a kind of compressor return air pipe liquid-jet device of small and exquisite, high reliability operation characteristic, cross heat control to realize compressor return air.
The technical solution of the utility model is as follows:
A kind of compressor return air pipe liquid-jet device, include hydrojet coil pipe, compressor return air pipe, compressor, capillary tube, filter and solenoid valve, it is characterized in that: described hydrojet coil pipe is spirally coiled in the outside of described compressor return air pipe, and be close on the periphery of described compressor return air pipe, it is upper that one end of hydrojet coil pipe cuts across on described compressor return air pipe from top to down, lower flanging bore, and end part seal, the tube wall being positioned at the hydrojet coil pipe of described compressor return air pipe is provided with one or more spray-hole, described one or more spray-hole towards the return-air direction contrary with described compressor, the other end of described hydrojet coil pipe is connected with one end of described capillary tube, and the other end of described capillary tube is connected with solenoid valve with described filter successively.
Described compressor return air pipe liquid-jet device, is characterized in that: the axial direction of described one or more spray-hole and described compressor return air pipe forms the angle of attack of 30 ° ~ 45 °.
Described compressor return air pipe liquid-jet device, it is characterized in that: the entry end of described solenoid valve connects from condensed liquid refrigerant, the outlet end of solenoid valve is connected with the entry end of described filter, the outlet end of filter is connected with the entry end of described capillary tube, the entry end of the outlet end hydrojet coil pipe of described capillary tube is connected, and each tie point passes through welded seal.
Described compressor return air pipe liquid-jet device, it is characterized in that: described hydrojet coil pipe is the circle of pipe with small pipe diameter or oblate copper tube, the periphery of described compressor return air pipe is close to by welding or other compression mode, multiple spray-holes on it are generally 2 ~ 4, and uniform by the angle of attack conical surface formed, aperture is Ф 1.5mm ~ Ф 2.5mm.
Described compressor return air pipe liquid-jet device, is characterized in that: the inside of described compressor return air pipe is divided into mixing section, phase transformation section and stable section by function, and wherein phase transformation section inwall can be fin structure in screw type height, its slenderness ratio 3 ~ 10.
From workflow, when compressor return air occurs overheated, solenoid valve is opened, liquid refrigerant after autocondensation in the future, after capillary-compensated step-down, obtains the refrigeration agent of low-temp low-pressure, part heat absorption in hydrojet coil pipe, and by tube wall heat exchange cooling compressor muffler, the gas-liquid mixed refrigerant of generation, finally from spray-hole ejection, mixes with the superheated vapor mixing section in managing carrying out from evaporator drier.Refrigeration agent is through part heat exchange in hydrojet coil pipe, and forming section gasifies, and decreases the phase variable in muffler.With there is no hydrojet coil pipe, be directly injected into compressor return air pipe and compare, Len req shortens relatively.For strengthening Local Heat Transfer and injection mixed effect, adopt contrary trend and contrary oblique angle jet tools.
The inside of compressor return air pipe is divided into mixing section, phase transformation section and stable section by function, and wherein mixing section and stable section should be straight tube form, and phase transformation section adopts wing strengthening in screw type height; The heat transfer requirements of the length of phase transformation section and interior wing form foundation tube wall carries out, and wherein slenderness ratio (ratio of L/D) is usually 3 ~ 10; The tube wall of compressor return air pipe is provided with two coaxial upper and lower flanging bores, at mixing section and phase transformation section intersection, and can through hydrojet coil pipe and can welded seal.
During normal temperature, this device is inoperative, the same with traditional design, and refrigeration system is run and needed certain degree of superheat design, guarantees compressor not liquid hammer; When high temperature return-air occurs overheated, this device is opened.For meeting Large Scale Cold liquid machine or air-conditioning miniature requirement, time in the design, can liquid/gas separator of cooling down be removed, at this moment needing higher heat control excessively.As designed by wing in phase transformation section is strengthened, improve tube wall heat exchange cooling, but be not to have interior wing to strengthen.
The beneficial effects of the utility model:
1, the utility model is when compressor return air is overheated, has dual-cooled effect, strengthening cooling effect.
2, after cancellation gas-liquid separator, the utility model is adopted can to play overheated effective control, and without negative effect.
3, the utility model compact structure, except a solenoid valve needs exterior fixing, takes up space hardly.
4, the capillary tube in the utility model replaces hydrojet expansion valve, and reliability is higher.
5, the utility model has lightweight, that realization is easy, cost is low feature.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the structural front view of hydrojet coil pipe and compressor return air pipe in the utility model.
Fig. 3 is the structure side view of hydrojet coil pipe and compressor return air pipe in the utility model.
Fig. 4 is that the A-A of Fig. 2 is to structure sectional view.
Embodiment
See accompanying drawing, a kind of compressor return air pipe liquid-jet device, include hydrojet coil pipe 1, compressor return air pipe 2, compressor 3, capillary tube 4, filter 5 and solenoid valve 6, hydrojet coil pipe 1 is spirally coiled in the outside of compressor return air pipe 2, and be close on the periphery of compressor return air pipe 2, the Hand of spiral of hydrojet coil pipe 1 and the return-air direction contrary of compressor 3, it is upper that one end of hydrojet coil pipe 1 cuts across on compressor return air pipe 2 from top to down, lower flanging bore, and end part seal, the tube wall being positioned at the hydrojet coil pipe 1 of compressor return air pipe 2 is provided with one or more spray-hole 7, one or more spray-hole 7 towards the return-air direction contrary with compressor 3, the other end of hydrojet coil pipe 1 is connected with one end of capillary tube 4, and the other end of capillary tube 4 is connected with solenoid valve 6 with filter 5 successively.
In the utility model, one or more spray-hole 7 and the axial direction of compressor return air pipe 2 form the angle of attack α of 30 ° ~ 45 °.
The entry end of solenoid valve 6 connects from condensed liquid refrigerant, the outlet end of solenoid valve 6 is connected with the entry end of filter 5, the outlet end of filter 5 is connected with the entry end of capillary tube 4, the entry end of the outlet end hydrojet coil pipe 1 of capillary tube 4 is connected, and each tie point passes through welded seal.
Hydrojet coil pipe 1 is the circle of pipe with small pipe diameter (d ≈ Ф 5mm ~ Ф 9mm) or oblate copper tube, the periphery of compressor return air pipe 2 is close to by welding or other compression mode, multiple spray-holes on it are generally 2 ~ 4, and uniform by the angle of attack conical surface formed, aperture is Ф 1.5mm ~ Ф 2.5mm.
The inside of compressor return air pipe 2 is divided into mixing section, phase transformation section and stable section by function, and wherein mixing section and stable section should be straight tube form, and phase transformation section adopts wing strengthening in screw type height; The heat transfer requirements of the length of phase transformation section and interior wing form foundation tube wall carries out, and wherein slenderness ratio (ratio of L/D) is usually 3 ~ 10; The tube wall of compressor return air pipe 2 is provided with two coaxial upper and lower flanging bores, at mixing section and phase transformation section intersection, and can through hydrojet coil pipe 1 and can welded seal.
For meeting Large Scale Cold liquid machine or air-conditioning miniature requirement, if remove liquid/gas separator of cooling down, tube wall heat exchange cooling and the gas-liquid injected cool double action but of this device should be strengthened.As strengthened wing design in phase transformation section, adjustment spray-hole quantity etc.
The internal diameter of capillary tube 4 is Ф 1.2mm ~ Ф 2.0mm, and concrete size requires with satisfied cooling and determines.
Filter 5 should be provided with rational order number, and to meet capillary tube 4 not by dirty stifled, its order number is generally 100 ~ 150 orders.
Solenoid valve 6 should be normally off, and when needing, energising is opened.
Each pipeline in device connects for gas welding, but can be not limited thereto.
Claims (5)
1. a compressor return air pipe liquid-jet device, include hydrojet coil pipe, compressor return air pipe, compressor, capillary tube, filter and solenoid valve, it is characterized in that: described hydrojet coil pipe is spirally coiled in the outside of described compressor return air pipe, and be close on the periphery of described compressor return air pipe, it is upper that one end of hydrojet coil pipe cuts across on described compressor return air pipe from top to down, lower flanging bore, and end part seal, the tube wall being positioned at the hydrojet coil pipe of described compressor return air pipe is provided with one or more spray-hole, described one or more spray-hole towards the return-air direction contrary with described compressor, the other end of described hydrojet coil pipe is connected with one end of described capillary tube, and the other end of described capillary tube is connected with solenoid valve with described filter successively.
2. compressor return air pipe liquid-jet device according to claim 1, is characterized in that: the axial direction of described one or more spray-hole and described compressor return air pipe forms the angle of attack of 30 ° ~ 45 °.
3. compressor return air pipe liquid-jet device according to claim 1, it is characterized in that: the entry end of described solenoid valve connects from condensed liquid refrigerant, the outlet end of solenoid valve is connected with the entry end of described filter, the outlet end of filter is connected with the entry end of described capillary tube, the entry end of the outlet end hydrojet coil pipe of described capillary tube is connected, and each tie point passes through welded seal.
4. compressor return air pipe liquid-jet device according to claim 1, it is characterized in that: described hydrojet coil pipe is the circle of pipe with small pipe diameter or oblate copper tube, the periphery of described compressor return air pipe is close to by welding or other compression mode, multiple spray-holes on it are generally 2 ~ 4, and uniform by the angle of attack conical surface formed, aperture is Ф 1.5mm ~ Ф 2.5mm.
5. compressor return air pipe liquid-jet device according to claim 1, is characterized in that: the inside of described compressor return air pipe is divided into mixing section, phase transformation section and stable section by function, and wherein phase transformation section inwall can be fin structure in screw type height, its slenderness ratio 3 ~ 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420602769.6U CN204283792U (en) | 2014-10-17 | 2014-10-17 | Compressor return air pipe liquid-jet device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420602769.6U CN204283792U (en) | 2014-10-17 | 2014-10-17 | Compressor return air pipe liquid-jet device |
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| Publication Number | Publication Date |
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| CN204283792U true CN204283792U (en) | 2015-04-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314790A (en) * | 2014-10-17 | 2015-01-28 | 合肥天鹅制冷科技有限公司 | Liquid spray device for air return pipe of compressor |
-
2014
- 2014-10-17 CN CN201420602769.6U patent/CN204283792U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314790A (en) * | 2014-10-17 | 2015-01-28 | 合肥天鹅制冷科技有限公司 | Liquid spray device for air return pipe of compressor |
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