CN206158946U - Compressor - Google Patents

Abstract

The utility model discloses a compressor, it includes the compressor casing, driving motor and bent axle, be provided with piston unit on the bent axle, piston unit is including piston ring and the cylinder barrel of living, piston unit lives piston ring in when motion and is 0.1~0.3mm with the cylinder barrel clearance, piston after high temperature expands down sets up to oval structure, the cylinder head top is equipped with reinforces heat transfer device, it is the heat dissipation muscle to reinforce heat transfer device, the leg is equipped with the intensive heat transfer mechanism of air current that breathes in in the cylinder barrel, be equipped with the snifter valve in the compressor casing, the filter screen of breathing in is equipped with to the snifter valve inboard, bent axle one end is equipped with the fan, after the structure of the oil adding device is adopted, it reinforces heat transfer mechanism to be equipped with the air current of breathing in in the cylinder barrel around the leg, be favorable to reducing compressed gas's in the cylinder barrel temperature, air distribution is gaseous to inhale from the snifter valve, get into through driving motor and compress in the reentrant cylinder around the intensive heat transfer mechanism of air current that breathes in, make oil gentleness isolate, be favorable to reducing compressed gas's in the cylinder barrel temperature, reduction of resistance, reduce overheated influence to compressor.

Description

A kind of compressor

Technical field

The utility model is related to a kind of refrigeration system, more particularly to a kind of semi-hermetic piston-type compressor.

Background technology

At present, in this Semi-closed piston compressor, the problem for existing is, according to service condition, its oil it is gentle cannot Realize separating, temperature is very high during compressor operating, the too high performance and life-span to compressor of temperature is unfavorable；In addition, cylinder In piston movement when leave gap with cylinder wall, can cause seizure of piston again if its gap is too small in prior art, and Piston is aluminium, and aluminium expands at high temperature can be very serious, causes its wall unevenness even, reduction of service life, existing employing line Circle motor speed rate of change is 25% or 75%, and current drain is big in transient operation, and Energy Efficiency Ratio is reduced, exhaust cooling effect Difference.

Utility model content

The technical problems to be solved in the utility model is to provide one kind can be by the rapid exhaust cooling of equipment, oil and gas phase point From, the compressor that increases the service life, improve Energy Efficiency Ratio and good refrigeration effect.

In order to solve above-mentioned technical problem, the utility model provides a kind of compressor, and it includes compressor housing, installs In compression case body motor, be installed in compression case body by motor drive bent axle, on the bent axle arrange There is piston unit, the piston unit is used to move back and forth in the compression case body in oscillating fashion, the piston list Unit includes piston ring and cylinder wall, and the piston ring is adapted with cylinder wall, and the piston unit is sealing structure, the piston Piston ring is 0.1～0.3mm with cylinder wall gap during unit motion, and the piston unit is set to ellipsoidal structure, under high temperature Expansion coordinates with cylinder wall, and the compressor housing is provided with cylinder cover, and the cylinder cover top is provided with reinforced heat exchanger, institute It is radiating ribs to state reinforced heat exchanger, and leg is provided with inspiratory airflow enhanced heat exchange mechanism in the cylinder wall, for reducing cylinder The temperature of compressed gas in wall, is provided with inlet valve in the compression case body, the inlet valve inner side is equipped with air-breathing filter screen, described Air-breathing its interior is set to spiral helicine deflector, and gas is sucked from inlet valve, and through motor inspiratory airflow is entered Enter back into around enhanced heat exchange mechanism in cylinder and compress, for oily gentle phase separation, described bent axle one end is provided with fan, for increasing Plus crankcase disturbance, enhanced heat exchange.

Preferably, the motor coil motor rotational speed rate is set to two sections, and one section of relative speed variation is 25%～ 30%, two sections of relative speed variations are 75%～80%, two sections of difference alternate runs.

Preferably, the motor is with the operation of identical frequency.

Preferably, the cylinder cover top is provided with least four endways radiating ribs.

Preferably, the bent axle is through on compressor housing shell wall region, and the fan is posted by compressor housing.

Preferably, described bent axle one end is provided with disc and/or fan.

Preferably, the compressor housing cools down round-robin method using refrigerant gas, and main survey adopts refrigerant suction flow Meter method, auxiliary survey adopts refrigerant liquid flow meter method.

Compared with prior art, the utility model has following advantages：

Be provided with piston unit on the bent axle, the piston unit includes piston ring and cylinder wall, the piston ring with Cylinder wall is adapted, and the piston unit is sealing structure, and piston ring is with cylinder wall gap when the piston unit is moved 0.1～0.3mm, the piston after expanding under the high temperature is set to ellipsoidal structure sealing, with vapour during piston movement in cylinder Casing wall has gap, and its gap is the smaller the better, and piston is aluminum, and the wall unevenness of its cylinder wall is even, and aluminium at high temperature can be fast Speed expansion, so the piston after expanding under high temperature is not positive round, in order to reach more preferable gap, its measurement high temperature lower piston is swollen Swollen later shape, then makes elliptical shape so that piston is swollen in high temperature in Piston Machining according to this data piston Become positive round after swollen, so as to be conducive to that the gap between piston and cylinder is arranged little, improve performance.

The compressor housing is provided with cylinder cover, and the cylinder cover top is provided with reinforced heat exchanger, and the reinforcing is changed Hot charging is set to radiating ribs, by increasing capacitance it is possible to increase the radiating of cylinder cover, and cooling can be exhausted to compressor operating, and prolongation uses the longevity Life, improves refrigeration, and cylinder cover is temperature highest region in compressor, and the too high performance and life-span to compressor of temperature is all It is unfavorable, inspiratory airflow enhanced heat exchange mechanism is provided with the cylinder wall around leg, advantageously reduce compressed gas in cylinder wall Temperature, reduce resistance, reduce the overheated impact to compressor.

Inlet valve is provided with the compression case body, the inlet valve inner side is equipped with air-breathing filter screen, in the air-breathing filter screen Portion is set to spiral helicine deflector, and air current composition gas is sucked from inlet valve, enters inspiratory airflow through motor strong Change to enter back into around heat exchange mechanisms in cylinder and compress, make that oil is gentle to be separated, effectively prevent liquid hammer, increase separating effect, and Pressure drop is reduced, described bent axle one end is provided with fan and/or disc, the double effectses for getting rid of oil and fan for cooling can be reached.

The motor coil motor rotational speed rate is set to two sections, and one section of relative speed variation is 25%～30%, two sections Relative speed variation be 75%～80%, two sections of difference alternate runs, one section operation or one section break, reduce current drain.

Description of the drawings

Fig. 1 is the structural representation of the utility model compressor.

Fig. 2 is the structural representation of cylinder cover in the utility model compressor.

Wherein：1- compressor housings, 2- motors, 3- bent axles, 4- piston units, 401- piston rings, 402- cylinder walls, 5- cylinder covers, 6- reinforced heat exchangers, 601- radiating ribs, 7- inspiratory airflow enhanced heat exchanges mechanism, 8- inlet valves, the filter of 9- air-breathings Net, 10- deflectors, 11- fans.

Specific embodiment

As shown in figure 1, a kind of compressor, it include compressor housing 1, be installed on motor 2 in compressor housing 1, The bent axle 3 driven by motor 2 in compressor housing 1 is installed on, piston unit 4, the piston are provided with the bent axle 3 Unit 4 is used to move back and forth in the compressor housing 1 in oscillating fashion, and the piston unit 4 includes the He of piston ring 401 Cylinder wall 402, the piston ring 401 is adapted with cylinder wall 402, the piston unit 4 be sealing structure, the piston unit Piston ring 401 is 0.1～0.3mm with the gap of cylinder wall 402 during 4 motion, and the piston after expanding under the high temperature is set to ellipse Shape structure, as shown in Fig. 2 the compressor housing 1 is provided with cylinder cover 5, the top of the cylinder cover 5 is provided with reinforced heat exchanger 6, the reinforced heat exchanger 6 is radiating ribs 601, and leg is provided with inspiratory airflow enhanced heat exchange mechanism 7 in the cylinder wall 402, Inlet valve 8, the inner side of the inlet valve 8 dress are provided with the temperature of compressed gas in for reducing cylinder wall, the compressor housing 1 There is air-breathing filter screen 9, spiral helicine deflector 10 is set to inside the air-breathing filter screen 9, gas is sucked from inlet valve 8, pass through Motor 2 is entered back in cylinder into around inspiratory airflow enhanced heat exchange mechanism 7 and compressed, described for oily gentle phase separation The one end of bent axle 3 is provided with fan 11, for increasing crankcase disturbance, enhanced heat exchange.

The coil motor rotational speed rate of the motor 2 is set to two sections, and one section of relative speed variation is 25%～30%, two sections Relative speed variation is 75%～80%, two sections of difference alternate runs.

The motor 2 is with the operation of identical frequency.

The top of the cylinder cover 5 is provided with least four endways radiating ribs 601.

The bent axle 3 is through on the shell wall region of compressor housing 1, and the fan 11 is posted by compressor housing 1.

The one end of the bent axle 3 is provided with disc and/or fan.

The compressor housing 1 cools down round-robin method using refrigerant gas, and main survey adopts refrigerant suction flowmeter method, auxiliary Survey adopts refrigerant liquid flow meter method.

The cold-producing medium Jing compressors inlet valve 8 of low-temp low-pressure and air-breathing filter screen 9 enter compressor, the favorable current after motor Passage enters cylinder wall 402, and the suction superheat of cold-producing medium is improved while cooling down cylinder wall, and then Jing inlet channels enter gas Cylinder is compressed into the gas of HTHP and discharges compressor, goes refrigeration system to carry out kind of refrigeration cycle.

First, corresponding parameter, the flow q of cold-producing medium are measured by corresponding measuring point in schematic diagram_mfCan be straight by flowmeter Reading is connect, then refrigerating capacity is：

Main survey：

Auxiliary survey：

In above formula, ν_gaFor compressor air-breathing specific volume under standard condition.

The control method of operating condition of test main control parameters：

It is the cooling water that exhaust regulating valve, Two-stage control subcooler and condenser are controlled by one-level that pressure at expulsion is adjusted Temperature, flow are achieved；

It is cold into gas by one-level control suction modulation, the restriction of Two-stage control hot gas regulating valve that pressure of inspiration(Pi) is adjusted But the flow rate of refrigerant gas of device is achieved；

It is then to enter gas cooling by the electronic expansion valve regulation control in refrigerant liquid line that suction temperature is adjusted The refrigerant liquid flow of device is realizing.

Claims (6)

1. a kind of compressor, it is characterised in that：It includes compressor housing（1）, be installed on compressor housing（1）Interior motor （2）, be installed on compressor housing（1）It is interior by motor（2）The bent axle of driving（3）, the bent axle（3）On be provided with piston list Unit（4）, the piston unit（4）For in oscillating fashion in the compressor housing（1）Interior reciprocating motion, the piston list Unit（4）Including piston ring（401）And cylinder wall（402）, the piston ring（401）With cylinder wall（402）It is adapted, the piston Unit（4）For sealing structure, the piston unit（4）Piston ring during motion（401）With cylinder wall（402）Gap be 0.1 ~ 0.3mm, the piston unit（4）Ellipsoidal structure is set to, expansion and cylinder wall under high temperature（402）It is engaged, the compression Casing body（1）It is provided with cylinder cover（5）, the cylinder cover（5）Top is provided with reinforced heat exchanger（6）, the enhanced heat exchange dress Put（6）For radiating ribs（601）, the cylinder wall（402）Interior leg is provided with inspiratory airflow enhanced heat exchange mechanism（7）, for reducing The temperature of compressed gas in cylinder wall, the compressor housing（1）Inside it is provided with inlet valve（8）, the inlet valve（8）Inner side is equipped with Air-breathing filter screen（9）, the air-breathing filter screen（9）Inside is set to spiral helicine deflector（10）, gas is from inlet valve（8）Middle suction Enter, through motor（2）Into inspiratory airflow enhanced heat exchange mechanism（7）Surrounding is entered back in cylinder to be compressed, gentle for oil It is separated, the bent axle（3）One end is provided with fan（11）, for increasing crankcase disturbance, enhanced heat exchange.

2. compressor according to claim 1, it is characterised in that：The motor（2）Coil motor rotational speed rate is arranged For two sections, one section of relative speed variation is 25% ~ 30%, and two sections of relative speed variations are 75% ~ 80%, two sections of difference alternate runs.

3. compressor according to claim 1, it is characterised in that：The motor（2）With the operation of identical frequency.

4. compressor according to claim 1, it is characterised in that：The cylinder cover（5）Top be provided with least four it is endways Radiating ribs（601）.

5. compressor according to claim 1, it is characterised in that：The bent axle（3）It is through to compressor housing（1）Shell wall On region, the fan（11）It is posted by compressor housing（1）.

6. compressor according to claim 1, it is characterised in that：The bent axle（3）One end is provided with disc and/or wind Fan.