CN113027731B - Micromotor adjusting device for air displacement of compressor - Google Patents
Micromotor adjusting device for air displacement of compressor Download PDFInfo
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- CN113027731B CN113027731B CN202110313500.0A CN202110313500A CN113027731B CN 113027731 B CN113027731 B CN 113027731B CN 202110313500 A CN202110313500 A CN 202110313500A CN 113027731 B CN113027731 B CN 113027731B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/08—Actuation of distribution members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
- F04B49/24—Bypassing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a micro-motor regulating device for the displacement of a compressor, which is arranged on an air cylinder, wherein an air cylinder hole is arranged on the air cylinder, the micro-motor regulating device for the displacement of the compressor also comprises a rotary switch and a micro-motor, the micro-motor is fixed on the air cylinder, the output end of the micro-motor is connected with the rotary switch, the air cylinder is also provided with a drainage hole, and the rotary switch is positioned on a communication air passage of the air cylinder hole and the drainage hole and can switch the communication state between the air cylinder hole and the drainage hole. The invention also discloses a working method of the micromotor adjusting device for the air displacement of the compressor. The invention realizes the communication and the blocking of the cylinder hole and the discharge hole by driving the rotary switch through the micromotor, realizes the regulation of the refrigerating capacity by controlling the output quantity of refrigerant gas, is different from the refrigerating capacity regulation mode of the variable-speed compressor, can not be limited by the low limit of the rotating speed of the compressor motor, and can output the refrigerating capacity lower than the refrigerating capacity of the variable-speed compressor at the lowest rotating speed, thereby having larger refrigerating capacity output regulation range.
Description
Technical Field
The invention relates to a refrigeration compressor, in particular to a micromotor adjusting device for the displacement of the compressor.
Background
With the development of national economy, the living standard of people is gradually improved. Consumers have increasingly high requirements on energy conservation, moisture preservation, fresh keeping and the like of refrigerators and freezers. The compressor is used as a core component of a refrigerator and a freezer and is the key for improving the quality of all items of refrigeration appliances. Inside the compressor, the cylinder is one of the main working parts. According to the technical characteristics of the refrigerating system, the refrigerating appliance has great difference on the refrigerating capacity of the compressor under different ambient temperatures. For example, the heat load of the refrigerator at the ring temperature of 16 ℃ is only about half of the heat load of the refrigerator at the ring temperature of 32 ℃, which is objectively required, and the compressor at the ring temperature of 16 ℃ provides smaller refrigerating output to ensure the efficient operation of the refrigerator system; meanwhile, the small refrigerating output of the compressor at the ring temperature of 16 ℃ can reduce the temperature fluctuation in the box caused by the overlarge refrigerating output of the compressor. Therefore, in order to meet the demand difference of the refrigerating capacity when the refrigerator operates at different ambient temperatures and ensure the efficient operation of the refrigerating system, the wide-refrigerating-capacity efficient compressor is an objective demand. At present, a variable-speed compressor in the industry can realize wide refrigerating output and meet the high-efficiency refrigerating requirements of refrigerating appliances at different environmental temperatures to a greater extent. However, in recent years, with the increasing demand for efficiency of the refrigeration system, higher demand is put on the width range of the refrigerating capacity of the compressor, and it is particularly desirable that the variable-speed compressor can provide smaller refrigerating capacity output to meet the requirement of the high-efficiency operation of the refrigeration system at low ring temperature, so as to further reduce the power consumption of the refrigeration system at the low ring temperature. The existing variable-speed compressor adjusts the refrigerating output through the change of the rotating speed, and is limited by characteristics of a lubricating system, a vibration reduction system and the like, the lowest rotating speed is designed to be about 1000rpm, and the difficulty of further reducing the rotating speed is high. The output of the air cylinder displacement of the constant-speed compressor is constant, and when the constant-speed compressor is used in a refrigerating system, the average refrigerating capacity output within a period of time is controlled by adjusting the running time and the on-time rate of the constant-speed compressor, so that the refrigerating capacity requirements of the refrigerating system under different environment temperatures are met. However, the refrigeration capacity adjusting mode has slightly poor efficiency compared with a variable-speed compressor; and the refrigerating output of the compressor at low ring temperature is far larger than the refrigerating output requirement of the system, the running efficiency of the system is low, and the control precision of the temperature in the box is slightly poor. Therefore, it is necessary to design a compressor displacement adjusting device that can be distinguished from a variable speed adjusting mode, and can realize that the refrigeration compressor generates different displacement and refrigeration capacities at the same speed, so that the constant speed compressor can realize variable refrigeration capacity output, and is also a better auxiliary refrigeration capacity adjusting structure for the variable speed compressor. The invention with the publication number of CN108317072A is specially used for 2018, 7 and 24, and discloses a linear compressor with an adjustable cylinder volume, which comprises a shell, a stator, a piston and a cylinder, wherein the stator, the piston and the cylinder are arranged in the shell, the head of the piston is slidably arranged in the cylinder, and the cylinder is adjustably mounted on the stator along the axial direction of the cylinder. However, the adjustment of the volume of the compressor cylinder can only be carried out when the compressor is delivered from a factory and cannot be carried out when the compressor is used by a user, so that the output of the refrigerating capacity cannot be adjusted according to the difference of the refrigerating capacity requirements when the compressor operates at different ambient temperatures, and the comprehensive power consumption of a refrigerating system is reduced.
Disclosure of Invention
In the prior art, under the condition of low ring temperature, the output of the refrigerating output of a fixed-speed compressor is excessive, and the output of the refrigerating output of a variable-speed compressor is still large due to the limit of the lowest rotating speed, so that the defect is overcome.
The technical scheme of the invention is as follows: the utility model provides a little motor adjusting device of compressor displacement, locate on the cylinder, be equipped with the cylinder hole on the cylinder, this little motor adjusting device of compressor displacement still includes rotary switch and micromotor, little motor is fixed on the cylinder, little motor output is connected with rotary switch, still is equipped with the discharge orifice on the cylinder, through the inside air flue intercommunication of cylinder between cylinder hole and discharge orifice, rotary switch is located the intercommunication air flue of cylinder hole and discharge orifice and can change the connected state between cylinder hole and discharge orifice. The rotary switch can connect the cylinder hole and the drain hole or block the communication between the cylinder hole and the drain hole, so that the compressor has two working modes of full-power working and non-full-power working. In a normal state, the cylinder hole and the discharge hole are not communicated with each other, the compressor is in a full-power working mode, and refrigerant gas entering the cylinder hole is compressed by a piston in the cylinder hole, then is completely output and enters a refrigeration pipeline; if the ambient temperature is lower, the micro motor is started to drive the rotary switch to move, and the rotary switch is connected with the cylinder hole and the drain hole, so that the compressor is in a non-full-power working mode. The compressor in the full power working mode is not different from the common compressor. When the compressor enters the non-full-power working mode, a part of refrigerant gas entering the cylinder hole enters the drain hole to be discharged in the process of being compressed by the piston, the refrigerant gas finally participating in compression and output is less than the refrigerant input amount initially entering the cylinder hole due to the midway leakage loss of the refrigerant, and the refrigerating capacity of the refrigerating system mainly depends on the refrigerant output amount of the compressor, namely the air discharge amount, so that after the compressor in the non-full-power working mode passes through one working cycle, the refrigerating capacity is less than that of the compressor adopting the full-power working mode in a normal state. Compared with a variable-speed compressor, the micro-motor regulating device for the air displacement of the compressor can generate and output refrigerating capacity lower than the minimum refrigerating capacity at the lowest speed; for a compressor with a fixed rotating speed, the micromotor adjusting device for the air displacement of the compressor can realize the conversion of two working modes, obtain the air displacement and the refrigerating capacity of the compressor with different grades, better meet the refrigerating capacity requirements under different working conditions and produce better energy-saving and consumption-reducing effects.
Preferably, the rotary switch is rotatably connected to the cylinder, an axial hole is formed in the rotary switch, a radial hole is formed in the circumferential surface of the rotary switch, and the radial hole is communicated with the axial hole. The rotary switch with the structure has a communication function, when the air cylinder is designed and processed, the air cylinder hole and the drain hole are connected through the air path, the rotary switch is arranged on a communication air path node between the air cylinder hole and the drain hole, and when the rotary switch is driven by a micro motor to rotate, the axial hole and the radial hole are respectively aligned with the air cylinder hole and the drain hole, so that the communication between the air cylinder hole and the drain hole can be realized; on the contrary, when the radial hole and the discharge hole are staggered, the communication between the cylinder hole and the discharge hole is blocked. Therefore, when the rotary switch rotates to different positions, different compressor working modes can be selected to obtain different air displacement.
Preferably, the cylinder is provided with a circular groove with an opening on the side surface of the cylinder, the circular groove is communicated with a cylinder hole, the rotary switch is embedded into the circular groove in a matching manner, the drainage hole is intersected with the axis of the circular groove, the axial hole is communicated with the cylinder hole, the inlet of the drainage hole is positioned on the inner wall of the circular groove, and the rotary switch is driven by the micromotor to switch between an overlapped state and a staggered state between a radial hole and the inlet of the drainage hole. The circular groove is used for placing the rotary switch to realize the rotary connection of the rotary switch on the cylinder, meanwhile, a cavity of the circular groove forms a connecting air passage between the discharge hole and the cylinder hole, the rotary switch rotates in the circular groove under the driving of a micro motor, when the radial hole is overlapped with the inlet of the discharge hole, the discharge hole is communicated with the cylinder hole through the radial hole and the axial hole, at the moment, the compressor enters a non-full power working mode, when a piston of the cylinder compresses refrigerant gas, part of the refrigerant gas is extruded into the rotary switch before the piston crosses the position corresponding to the circular groove, then enters the discharge hole through the radial hole, and finally is discharged, so that the amount of the refrigerant gas participating in compression and output in the closed end of the piston and the cylinder hole is less than the amount of the refrigerant gas sucked into the cylinder hole initially, and the refrigerant gas between the piston and the closed end of the cylinder hole is not reduced after the piston crosses the position corresponding to the circular groove; when the inlets of the radial hole and the discharge hole are staggered, the air path between the discharge hole and the cylinder hole is blocked by the rotary switch, and at the moment, the compressor enters a full-power working mode, refrigerant gas sucked into the cylinder hole is not lost, and the refrigerant gas completely participates in compression and output.
Preferably, the depth of the circular groove is smaller than the distance from the side surface of the cylinder to the cylinder hole, the inner end of the circular groove is provided with a vent hole with the diameter smaller than that of the circular groove, and the vent hole is communicated with the circular groove and the cylinder hole. The diameter difference exists between the circular groove and the vent hole, so that the circular groove is not directly communicated with the cylinder hole, the inner end of the circular groove can still form axial positioning for the rotary switch, and the reliable connection between the rotary switch and the micromotor is ensured.
Preferably, the rotary switch is connected with the output end of the micromotor in a key mode. The key connection mode has simple structure and high transmission efficiency.
Alternatively, the rotary switch is riveted to the micromotor output. The riveting mode has simple structure and reliable connection.
The working method of the micro-motor adjusting device for the exhaust volume of the compressor comprises the following steps:
step one, setting a mode conversion trigger temperature;
when the compressor works at the mode conversion trigger temperature and the lower annular temperature, the rotary switch rotates under the control of the micromotor until the radial hole is overlapped with the inlet of the drainage hole; when the compressor works at the ring temperature above the mode conversion trigger temperature, the rotary switch rotates to stagger the radial hole and the inlet of the drain hole under the control of the micro motor.
The micromotor adjusting device for the air displacement of the compressor can realize the conversion between a full-power working mode and a non-full-power working mode by the method, obtain the air displacement and the refrigerating capacity of the compressor with different grades, better meet the refrigerating capacity requirements under different working conditions and produce better energy-saving and consumption-reducing effects.
The invention has the beneficial effects that:
the refrigerating output adjusting range is wider. The invention realizes the communication and the blocking of the cylinder hole and the discharge hole by driving the rotary switch through the micromotor, realizes the regulation of the refrigerating capacity by controlling the output quantity of refrigerant gas, is different from the refrigerating capacity regulation mode of the variable-speed compressor, can not be limited by the low limit of the rotating speed of the compressor motor, and can output the refrigerating capacity lower than the refrigerating capacity of the variable-speed compressor at the lowest rotating speed, thereby having larger refrigerating capacity output regulation range.
Better adapt to different working conditions and have better energy-saving and consumption-reducing effects. The invention can realize the conversion of two working modes by controlling the rotary switch by the micromotor, obtain the air displacement and the refrigerating capacity of the compressor with different grades, better meet the refrigerating capacity requirements under different working conditions and generate better energy-saving and consumption-reducing effects.
Drawings
FIG. 1 is a schematic view of a disassembled structure of the present invention;
FIG. 2 is a schematic structural diagram of a rotary switch according to the present invention;
FIG. 3 is a side view of the present invention;
FIG. 4 is a top view of the present invention;
FIG. 5 is a schematic view of a portion of the vent hole in communication with the cylinder bore of the present invention;
fig. 6 is a partial structural view illustrating a state in which a drain hole is blocked from a cylinder bore according to the present invention.
In the figure, 1-cylinder, 1 a-vent hole, 1 b-circular groove, 1 c-discharge hole, 1 d-cylinder hole, 2-rotary switch, 2 a-axial hole, 2 b-radial hole, 3-micromotor and 4-crankcase.
Detailed Description
The invention is further described with reference to the following specific embodiments in conjunction with the accompanying drawings.
Example 1:
as shown in fig. 1 to 6, a micro-motor adjusting device for the displacement of a compressor is arranged on a cylinder 1, the cylinder 1 is installed on a crankcase 4, the cylinder 1 and the crankcase 4 are integrally arranged in a closed shell, a cylinder hole 1d is arranged on the cylinder 1, and a crankshaft on the crankcase 4 drives a piston to reciprocate in the cylinder hole 1d through a connecting rod to compress refrigerant gas. The micromotor adjusting device for the air displacement of the compressor further comprises a rotary switch 2 and a micromotor 3, wherein the micromotor 3 is fixed on the cylinder 1, and a rotating shaft at the output end of the micromotor 3 is connected with the rotary switch 2 through a key. The cylinder 1 is provided with a circular groove 1b opened on the side surface of the cylinder 1, the depth of the circular groove 1b is smaller than the distance from the side surface of the cylinder 1 to a cylinder hole 1d, the inner end of the circular groove 1b is provided with a vent hole 1a which is coaxial with the circular groove 1b and the axial hole 2a and has a diameter smaller than that of the circular groove 1b, the vent hole 1a is communicated with the circular groove 1b and the cylinder hole 1d, and the vent hole 1a is a straight hole. Rotary switch 2 is cylindricly and the adaptation is embedded into circular slot 1b in, is equipped with the open axial hole of one end 2a in the rotary switch 2, and axial hole 2a links all the time cylinder hole 1d, still is equipped with a radial hole 2b on rotary switch 2 global, radial hole 2b and axial hole 2a intercommunication. The cylinder 1 is also provided with a discharge hole 1c, the discharge hole 1c is vertically intersected with the circular groove 1b, the axis of the discharge hole 1c is parallel to the axis of the cylinder hole 1d, the inlet of the discharge hole 1c is positioned on the inner wall of the circular groove 1b, the outlet of the discharge hole 1c and the inlet of the cylinder hole 1d are positioned at the same end of the cylinder 1, and the outlet and the inlet of the cylinder hole 1d are positioned on one surface facing the piston driving shaft. The micromotor 3 is electrically connected with a controller, and the input end of the controller is connected with a ring temperature sensor for monitoring the external environment temperature of the refrigeration equipment. The rotary switch 2 is driven by the micromotor 3, and the inlets of the radial holes 2b and the drain holes 1c can be switched between an overlapped state and a staggered state.
The micromotor adjusting device for the air displacement of the compressor is applied to a refrigerator, and the rotary switch 2 is in a closed state under a normal state, namely, the communication between the cylinder hole 1d and the drain hole 1c is blocked, namely, the default working mode of the compressor is a full-power working mode.
The working method of the micromotor adjusting device for the air displacement of the compressor comprises the following steps:
setting a mode conversion trigger temperature, wherein the mode conversion trigger temperature is 16 ℃, and the step can be set by a refrigeration equipment designer according to needs through a main control program on a refrigerator;
when the compressor works at the ambient temperature of 16 ℃ or below, the controller outputs a working signal, the micro-motor 3 is started, the rotary switch 2 is driven to rotate until the radial hole 2b is overlapped with the inlet of the drain hole 1c, the compressor enters a non-full-power working mode, when the piston of the cylinder 1 compresses refrigerant gas, part of the refrigerant gas is extruded into the axial hole 2a of the rotary switch 2 before the piston crosses the position corresponding to the circular groove 1b, specifically crosses the vent hole 1a, then enters the drain hole 1c through the radial hole 2b, and finally is discharged into the shell, so that the amount of the refrigerant gas compressed and output in the cylinder hole at the closed end of the piston and the cylinder hole 1d is less than the amount of the refrigerant gas sucked into the cylinder hole 1d at first, and the gas between the piston and the closed end of the cylinder hole 1d is not reduced again only when the piston crosses the position corresponding to the circular groove 1b, specifically crosses the vent hole 1 a; when the compressor works at the temperature of above 16 ℃, the micro motor 3 does not act, the state that the radial hole 2b of the rotary switch 2 is staggered with the inlet of the discharge hole 1c is maintained, at the moment, the air path between the discharge hole 1c and the cylinder hole 1d is blocked by the rotary switch, the compressor is in a full power working mode, and refrigerant gas sucked into the cylinder hole 1d is not lost and completely participates in compression and output.
Example 2:
the rotary switch 2 is riveted with the output end of the micro motor 3. The mode transition trigger temperature was 18 ℃. The rest is the same as example 1.
Claims (5)
1. The micro-motor adjusting device for the air displacement of the compressor is arranged on an air cylinder (1), an air cylinder hole (1 d) is formed in the air cylinder (1), the micro-motor adjusting device is characterized by further comprising a rotary switch (2) and a micro-motor (3), the micro-motor (3) is fixed on the air cylinder (1), the output end of the micro-motor (3) is connected with the rotary switch (2), a drainage hole (1 c) is further formed in the air cylinder (1), the air cylinder hole (1 d) is communicated with the drainage hole (1 c) through an air passage inside the air cylinder (1), the rotary switch (2) is located on a communication air passage between the air cylinder hole (1 d) and the drainage hole (1 c) and can switch the communication state between the air cylinder hole (1 d) and the drainage hole (1 c), the rotary switch (2) is rotatably connected to the air cylinder (1), an axial hole (2 a) is formed in the rotary switch (2), a radial hole (2 b) is formed in the peripheral surface of the rotary switch (2), the radial hole (2 b) is communicated with the axial hole (2 a), an opening is formed in the side surface of the air cylinder hole (1 b), the side surface of the circular groove (1) is embedded in the circular groove (1 b), the inner wall (1 b), the axial hole (1 b) is matched with the circular groove (1 a circular groove (1 b), the axial hole (1 b) of the rotary switch (1 b), the rotary switch (2) is driven by the micro motor (3), and the inlets of the radial hole (2 b) and the drain hole (1 c) are switched between an overlapping state and a dislocation state.
2. The micro-motor regulation device of the displacement of the compressor according to claim 1, wherein the depth of the circular groove (1 b) is smaller than the distance from the side surface of the cylinder (1) to the cylinder hole (1 d), the inner end of the circular groove (1 b) is provided with a vent hole (1 a) having a diameter smaller than that of the circular groove (1 b), and the vent hole (1 a) is communicated with the circular groove (1 b) and the cylinder hole (1 d).
3. The micromotor regulation of the displacement of the compressor according to claim 1, characterized in that the rotary switch (2) is connected to the output terminal of the micromotor (3).
4. The micro-motor regulation device of the exhaust gas quantity of the compressor according to any one of claims 1 to 3, characterized in that the rotary switch (2) is riveted with the output end of the micro-motor (3).
5. The operation method of the micro-motor regulator for discharge capacity of compressor according to claim 1, comprising the steps of:
step one, setting a mode conversion trigger temperature;
when the compressor works at the mode conversion trigger temperature or below, the rotary switch (2) rotates to overlap the inlets of the radial hole (2 b) and the drain hole (1 c) under the control of the micromotor (3); when the compressor works at the ring temperature above the mode conversion trigger temperature, the rotary switch (2) rotates to stagger the radial hole (2 b) and the inlet of the drain hole (1 c) under the control of the micromotor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110313500.0A CN113027731B (en) | 2021-03-24 | 2021-03-24 | Micromotor adjusting device for air displacement of compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110313500.0A CN113027731B (en) | 2021-03-24 | 2021-03-24 | Micromotor adjusting device for air displacement of compressor |
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| Publication Number | Publication Date |
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| CN113027731A CN113027731A (en) | 2021-06-25 |
| CN113027731B true CN113027731B (en) | 2022-12-13 |
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| CN202110313500.0A Active CN113027731B (en) | 2021-03-24 | 2021-03-24 | Micromotor adjusting device for air displacement of compressor |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678930A (en) * | 2018-07-11 | 2018-10-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Cylinder block and compressor with it |
| CN108980014A (en) * | 2018-09-13 | 2018-12-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Cylinder holder assembly, piston compressor and the refrigeration system of piston compressor |
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2021
- 2021-03-24 CN CN202110313500.0A patent/CN113027731B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678930A (en) * | 2018-07-11 | 2018-10-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Cylinder block and compressor with it |
| CN108980014A (en) * | 2018-09-13 | 2018-12-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Cylinder holder assembly, piston compressor and the refrigeration system of piston compressor |
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| CN113027731A (en) | 2021-06-25 |
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