CN213235408U - Piston type refrigeration compressor variable volume structure - Google Patents
Piston type refrigeration compressor variable volume structure Download PDFInfo
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- CN213235408U CN213235408U CN202021610055.1U CN202021610055U CN213235408U CN 213235408 U CN213235408 U CN 213235408U CN 202021610055 U CN202021610055 U CN 202021610055U CN 213235408 U CN213235408 U CN 213235408U
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Abstract
The utility model discloses a piston compressor varactor structure, including valves, crankcase, piston and varactor, varactor installs on the valves, and varactor includes adapter sleeve, regulating spindle and actuating mechanism, is equipped with on the adapter sleeve and holds the chamber, and the regulating spindle setting is holding the intracavity and closely laminating with the lateral wall that holds the chamber, and actuating mechanism drives the regulating spindle along adapter sleeve axial displacement, holds the cylinder hole intercommunication on the one end in chamber and the crankcase. The utility model provides a piston compressor varactor structure reaches regulation clearance volume size according to the volume size of the adjustable cavity of the actual refrigerating output demand control of refrigerator, freezer to adjust the cold volume output of compressor, realize infinitely variable control compressor's air delivery volume and be the refrigerating output.
Description
Technical Field
The utility model belongs to the technical field of the compressor and specifically relates to a piston compressor variable volume structure is related to.
Background
With the development of national economy, the living standard of people is gradually improved. The requirements of common people on energy conservation, moisture preservation, fresh keeping and the like of refrigerators and freezers are higher and higher. The compressor is used as a core component of a refrigerator and a freezer and is the key for improving various qualities of the refrigerator. According to the matching characteristics of the refrigerator and the compressor, the output requirements of the refrigerator on the refrigerating capacity of the compressor at each stage of operation are different. In the temperature raising process, the refrigerator needs a compressor to provide large refrigerating capacity, so that the temperature of the refrigerator compartment can be quickly reduced to a characteristic temperature. In the stable operation process, the refrigerator only needs the compressor to provide smaller cooling capacity, so that the energy-saving effect can be achieved; on the other hand, the compartment of the refrigerator needs to accurately control the temperature and improve the freshness and moisture preservation of food, so that the cold quantity matching of the refrigerator and a compressor needs to be accurate and cannot have large fluctuation. Therefore, the compressor capable of outputting the variable-cold quantity, particularly the compressor capable of outputting the ultra-low cold quantity is the most important guarantee for the energy conservation and high-quality development of the future refrigerator and the freezer.
At present, the dynamic matching of the refrigerating capacity of a refrigerator-compressor is generally controlled by two ways in the industry; one way is to control the start and stop of the compressor, and the other way is to use an inverter compressor. The common practice of the high-efficiency energy-saving refrigerator is to combine two modes. The compressor of the frequency conversion refrigerator is characterized in that the rotating speed of the motor is variable, generally ranges from 900 rpm to 4500 rpm, and the lower the rotating speed is, the lower the power of the compressor is, so that the compressor is more beneficial to energy conservation of the refrigerator under an energy-saving working condition and temperature control of a compartment of the refrigerator. However, the rotating speed of the inverter compressor cannot be infinitely small, the compressor cannot be lubricated by oil pumping when the rotating speed is lower than a certain rotating speed, and the vibration of the whole machine is large when the rotating speed is too low. The minimum rotating speed of the compressor of the existing frequency conversion refrigerator has strict requirements on the premise of ensuring the lubrication reliability, and the minimum refrigerating capacity output by the compressor and the actual refrigerating capacity requirement of the refrigerator always have large difference. Therefore, a variable volume structure of the piston type refrigeration compressor needs to be designed, and the gas transmission quantity, namely the refrigerating capacity of the refrigeration compressor can be adjusted in a stepless mode.
Disclosure of Invention
The utility model discloses an overcome prior art intermediate frequency conversion refrigerator compressor under the prerequisite of guaranteeing lubricated reliability, minimum rotational speed all has strict requirements, just also cause the minimum cold volume of compressor output and the actual cold volume demand of refrigerator to have the problem of great gap all the time, a piston compressor varactor structure is provided, reach regulation clearance volume size according to the refrigerator, the volume size of the adjustable cavity of the actual refrigerating output demand control of freezer, thereby adjust the cold volume output of compressor, realize stepless regulation compressor's air output and be the refrigerating output.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a piston compressor varactor structure, includes valves, crankcase, piston and varactor device, and varactor device installs on the valves, and varactor device includes adapter sleeve, regulating spindle and actuating mechanism, is equipped with on the adapter sleeve and holds the chamber, and the regulating spindle setting is holding the intracavity and closely laminating with the lateral wall that holds the chamber, and actuating mechanism drives the regulating spindle and follows adapter sleeve axial displacement, holds the cylinder hole intercommunication on the one end in chamber and the crankcase.
In the technical scheme, the variable volume device and the crankcase enclose an adjustable cavity with variable volume, and the adjustable cavity becomes a part of the clearance volume of the compressor; the adjusting shaft can move towards the direction close to the cylinder hole or away from the cylinder hole under the action of the driving mechanism, so that the volume of the adjustable cavity is changed, and the clearance volume of the compressor is changed. The utility model discloses an advantage and beneficial effect do: 1. the piston type refrigeration compressor variable volume structure changes the clearance volume of the compressor through the variable volume device, so as to adjust the effective stroke volume of the compressor, achieve the purpose of adjusting the gas transmission quantity of the compressor, namely the refrigerating capacity, and theoretically realize the stepless adjustment of the refrigerating capacity of the compressor from 0W to the rated refrigerating capacity; 2. the fixed-frequency compressor with the variable-capacity structure can realize variable-cooling-quantity output; the structure is simple and the control is convenient; 3. the variable-frequency compressor with the variable-capacity structure can further widen the cold range, particularly can realize ultralow cold output, and is favorable for further energy conservation and accurate temperature control of refrigeration systems of refrigerators and freezers.
Preferably, the adjusting shaft is provided with an external thread, the connecting sleeve is provided with an internal thread, the external thread is matched with the internal thread, the driving mechanism is a rotating motor, and an output shaft of the rotating motor is connected with the adjusting shaft. The structure can realize the movement of the adjusting shaft, and the volume of the adjustable cavity is changed, so that the clearance volume of the compressor is changed.
Preferably, the driving mechanism is a linear motor, an expansion link of the linear motor is connected with the adjusting shaft, and the adjusting shaft is connected with the connecting sleeve in a sliding manner. The structure can realize the movement of the adjusting shaft, and the volume of the adjustable cavity is changed, so that the clearance volume of the compressor is changed.
Preferably, a sealing groove is formed in the side wall of the adjusting shaft, and a sealing ring is arranged in the sealing groove. The structure can ensure the tightness of the accommodating cavity.
The utility model provides a piston compressor varactor structure, includes valves, crankcase, piston and varactor device, and varactor device installs on the crankcase, and varactor device includes adapter sleeve, regulating spindle and actuating mechanism, is equipped with on the adapter sleeve and holds the chamber, and the regulating spindle setting is holding the intracavity and closely laminating with the lateral wall that holds the chamber, and actuating mechanism drives the regulating spindle and follows adapter sleeve axial displacement, holds the cylinder hole intercommunication on the one end in chamber and the crankcase.
In the technical scheme, the variable volume device and the crankcase enclose an adjustable cavity with variable volume, and the adjustable cavity becomes a part of the clearance volume of the compressor; the adjusting shaft can move towards the direction close to the cylinder hole or away from the cylinder hole under the action of the driving mechanism, so that the volume of the adjustable cavity is changed, and the clearance volume of the compressor is changed. The utility model discloses an advantage and beneficial effect do: 1. the piston type refrigeration compressor variable volume structure changes the clearance volume of the compressor through the variable volume device, so that the effective stroke volume of the compressor is adjusted, the purpose of adjusting the gas transmission quantity of the compressor, namely the refrigerating capacity is achieved, and the stepless adjustment of the refrigerating capacity of the compressor from 0W to the rated refrigerating capacity can be realized theoretically; 2. the fixed-frequency compressor with the variable-capacity structure can realize variable-cooling-quantity output, and is simple in structure and convenient to control; 3. the variable-frequency compressor with the variable-capacity structure can further widen the cold range, particularly can realize ultralow cold output, and is favorable for further energy conservation and accurate temperature control of refrigeration systems of refrigerators and freezers.
As preferred, hold the chamber and pass through drainage groove and cylinder hole intercommunication, the one end that drainage groove and cylinder hole communicate is close to the valves. The one end of drainage groove and cylinder hole intercommunication is close to the valves and can guarantees that the piston can communicate with the cylinder hole when being close to the valves.
Preferably, the adjusting shaft is provided with an external thread, the connecting sleeve is provided with an internal thread, the external thread is matched with the internal thread, the driving mechanism is a rotating motor, and an output shaft of the rotating motor is connected with the adjusting shaft. The structure can realize the movement of the adjusting shaft, and the volume of the adjustable cavity is changed, so that the clearance volume of the compressor is changed.
Preferably, the driving mechanism is a linear motor, an expansion link of the linear motor is connected with the adjusting shaft, and the adjusting shaft is connected with the connecting sleeve in a sliding manner. The structure can realize the movement of the adjusting shaft, and the volume of the adjustable cavity is changed, so that the clearance volume of the compressor is changed.
Preferably, a sealing groove is formed in the side wall of the adjusting shaft, and a sealing ring is arranged in the sealing groove. The structure can ensure the tightness of the accommodating cavity.
The utility model has the advantages that: (1) the piston type refrigeration compressor variable-capacity structure changes the clearance volume of the compressor through the variable-capacity driving device, so that the effective stroke volume of the compressor is adjusted, the purpose of adjusting the gas transmission quantity of the compressor, namely the refrigerating capacity is achieved, and the stepless adjustment of the refrigerating capacity of the compressor from 0W to the rated refrigerating capacity can be realized theoretically; (2) the fixed-frequency compressor with the variable-capacity structure can realize variable-cooling-quantity output; the structure is simple and the control is convenient; (3) the variable-frequency compressor with the variable-capacity structure can further widen the cold range, particularly can realize ultralow cold output, and is favorable for further energy conservation and accurate temperature control of refrigeration systems of refrigerators and freezers.
Drawings
FIG. 1 is a schematic structural view of example 1;
FIG. 2 is a schematic structural view of example 2.
In the figure: valve bank 1, crankcase 2, cylinder bore 2.1, piston 3, varactor 4, adapter sleeve 4.1, adjusting shaft 4.2, actuating mechanism 4.3, hold chamber 4.4, drainage groove 4.5.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments.
Example 1:
as shown in fig. 1, a piston type refrigeration compressor variable volume structure, including valves 1, crankcase 2, piston 3 and variable volume device 4, variable volume device 4 is installed on valves 1, variable volume device 4 includes adapter sleeve 4.1, regulating spindle 4.2 and actuating mechanism 4.3, be equipped with on the adapter sleeve 4.1 and hold chamber 4.4, regulating spindle 4.2 sets up and holds in chamber 4.4 and closely laminate with the lateral wall that holds chamber 4.4, actuating mechanism 4.3 drives regulating spindle 4.2 along adapter sleeve 4.1 axial displacement, the one end that holds chamber 4.4 communicates with cylinder hole 2.1 on the crankcase 2. And a sealing groove is arranged on the side wall of the adjusting shaft 4.2, and a sealing ring is arranged in the sealing groove.
In the technical scheme, the variable volume device 4 and the crankcase 2 enclose an adjustable cavity with variable volume, and the adjustable cavity becomes a part of the clearance volume of the compressor; the adjusting shaft 4.2 can move towards the direction close to the cylinder hole 2.1 or move towards the direction far away from the cylinder hole 2.1 under the action of the driving mechanism 4.3, so that the volume of the adjustable cavity is changed, and the clearance volume of the compressor is changed. The utility model discloses an advantage and beneficial effect do: 1. the variable volume structure of the piston 3 type refrigeration compressor changes the clearance volume of the compressor through the variable volume device 4, so that the effective stroke volume of the compressor is adjusted, the purpose of adjusting the gas transmission quantity of the compressor, namely the refrigerating capacity is achieved, and the stepless adjustment of the refrigerating capacity of the compressor from 0W to the rated refrigerating capacity can be realized theoretically; 2. the fixed-frequency compressor with the variable-capacity structure can realize variable-cooling-quantity output; the structure is simple and the control is convenient; 3. the variable-frequency compressor with the variable-capacity structure can further widen the cold range, particularly can realize ultralow cold output, and is favorable for further energy conservation and accurate temperature control of refrigeration systems of refrigerators and freezers.
Example 2:
as shown in fig. 2, a piston type refrigeration compressor variable volume structure, including valves 1, crankcase 2, piston 3 and variable volume device 4, variable volume device 4 is installed on crankcase 2, variable volume device 4 includes adapter sleeve 4.1, regulating spindle 4.2 and actuating mechanism 4.3, be equipped with on the adapter sleeve 4.1 and hold chamber 4.4, regulating spindle 4.2 sets up and holds in chamber 4.4 and closely laminate with the lateral wall that holds chamber 4.4, actuating mechanism 4.3 drives regulating spindle 4.2 along adapter sleeve 4.1 axial displacement, the one end that holds chamber 4.4 communicates with cylinder hole 2.1 on the crankcase 2. Hold chamber 4.4 and communicate with cylinder hole 2.1 through drainage groove 4.5, the one end that drainage groove 4.5 and cylinder hole 2.1 communicate is close to valves 1.
And a sealing groove is arranged on the side wall of the adjusting shaft 4.2, and a sealing ring is arranged in the sealing groove.
In the technical scheme, the variable volume device 4 and the crankcase 2 enclose an adjustable cavity with variable volume, and the adjustable cavity becomes a part of the clearance volume of the compressor; the adjusting shaft 4.2 can move towards the direction close to the cylinder hole 2.1 or move towards the direction far away from the cylinder hole 2.1 under the action of the driving mechanism 4.3, so that the volume of the adjustable cavity is changed, and the clearance volume of the compressor is changed. The utility model discloses an advantage and beneficial effect do: 1. the variable volume structure of the piston 3 type refrigeration compressor changes the clearance volume of the compressor through the variable volume device 4, so that the effective stroke volume of the compressor is adjusted, the purpose of adjusting the gas transmission quantity of the compressor, namely the refrigerating capacity is achieved, and the stepless adjustment of the refrigerating capacity of the compressor from 0W to the rated refrigerating capacity can be realized theoretically; 2. the fixed-frequency compressor with the variable-capacity structure can realize variable-cooling-quantity output, and is simple in structure and convenient to control; 3. the variable-frequency compressor with the variable-capacity structure can further widen the cold range, particularly can realize ultralow cold output, and is favorable for further energy conservation and accurate temperature control of refrigeration systems of refrigerators and freezers.
Example 3:
as shown in fig. 1, on the basis of embodiment 1 or embodiment 2, an external thread is provided on the adjusting shaft 4.2, an internal thread is provided on the connecting sleeve 4.1, the external thread is adapted to the internal thread, the driving mechanism 4.3 is a rotating motor, and an output shaft of the rotating motor is connected to the adjusting shaft 4.2. The structure can realize the movement of the adjusting shaft 4.2, and the volume of the adjustable cavity is changed, so that the clearance volume of the compressor is changed.
Example 4:
as shown in fig. 2, on the basis of embodiment 1 or embodiment 2, the driving mechanism 4.3 is a linear motor, an expansion link of the linear motor is connected with the adjusting shaft 4.2, and the adjusting shaft 4.2 is slidably connected with the connecting sleeve 4.1. The structure can realize the movement of the adjusting shaft 4.2, and the volume of the adjustable cavity is changed, so that the clearance volume of the compressor is changed.
The utility model has the advantages that: the piston type refrigeration compressor variable volume structure changes the clearance volume of the compressor through the variable volume device, so as to adjust the effective stroke volume of the compressor, achieve the purpose of adjusting the gas transmission quantity of the compressor, namely the refrigerating capacity, and theoretically realize the stepless adjustment of the refrigerating capacity of the compressor from 0W to the rated refrigerating capacity; the fixed-frequency compressor with the variable-capacity structure can realize variable-cooling-quantity output; the structure is simple and the control is convenient; the variable-frequency compressor with the variable-capacity structure can further widen the cold range, particularly can realize ultralow cold output, and is favorable for further energy conservation and accurate temperature control of refrigeration systems of refrigerators and freezers.
Claims (7)
1. The utility model provides a piston compressor varactor structure, characterized by, includes valves, crankcase, piston and varactor device, and varactor device installs on the valves, and varactor device includes adapter sleeve, regulating spindle and actuating mechanism, is equipped with on the adapter sleeve and holds the chamber, and the regulating spindle setting is holding the intracavity and closely laminating with the lateral wall that holds the chamber, and actuating mechanism drives the regulating spindle and follows adapter sleeve axial displacement, holds the cylinder hole intercommunication on the one end in chamber and the crankcase.
2. The piston type refrigeration compressor capacity-changing structure as claimed in claim 1, wherein the adjusting shaft is provided with an external thread, the connecting sleeve is provided with an internal thread, the external thread is matched with the internal thread, the driving mechanism is a rotating motor, and an output shaft of the rotating motor is connected with the adjusting shaft.
3. The piston type refrigeration compressor capacity-changing structure as claimed in claim 1, wherein the driving mechanism is a linear motor, a telescopic rod of the linear motor is connected with the adjusting shaft, and the adjusting shaft is slidably connected with the connecting sleeve.
4. The utility model provides a piston compressor varactor structure, characterized by, includes valves, crankcase, piston and varactor device, and varactor device installs on the crankcase, and varactor device includes adapter sleeve, regulating spindle and actuating mechanism, is equipped with on the adapter sleeve and holds the chamber, and the regulating spindle setting is holding the intracavity and closely laminating with the lateral wall that holds the chamber, and actuating mechanism drives the regulating spindle and follows adapter sleeve axial displacement, holds the cylinder hole intercommunication on the one end in chamber and the crankcase.
5. The piston type refrigeration compressor capacity-changing structure as claimed in claim 4, wherein the accommodating cavity is communicated with the cylinder hole through a drainage groove, and one end of the drainage groove communicated with the cylinder hole is close to the valve group.
6. The piston type refrigeration compressor capacity-changing structure as claimed in claim 4, wherein the adjusting shaft is provided with an external thread, the connecting sleeve is provided with an internal thread, the external thread is matched with the internal thread, the driving mechanism is a rotating motor, and an output shaft of the rotating motor is connected with the adjusting shaft.
7. The piston type refrigeration compressor capacity-changing structure as claimed in claim 4, wherein the driving mechanism is a linear motor, a telescopic rod of the linear motor is connected with the adjusting shaft, and the adjusting shaft is slidably connected with the connecting sleeve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021610055.1U CN213235408U (en) | 2020-08-05 | 2020-08-05 | Piston type refrigeration compressor variable volume structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021610055.1U CN213235408U (en) | 2020-08-05 | 2020-08-05 | Piston type refrigeration compressor variable volume structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012918A (en) * | 2020-08-05 | 2020-12-01 | 加西贝拉压缩机有限公司 | Piston type refrigeration compressor variable volume structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012918A (en) * | 2020-08-05 | 2020-12-01 | 加西贝拉压缩机有限公司 | Piston type refrigeration compressor variable volume structure |
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