One-way circulation mechanism, oil blocking device with one-way circulation mechanism and compressor with one-way circulation mechanism

Abstract

The invention discloses a one-way circulation mechanism, an oil blocking device with the one-way circulation mechanism and a compressor with the one-way circulation mechanism. The one-way circulation mechanism comprises a component body provided with a cavity, an upper side face vent hole formed in the upper side face of the component body and a lower side face vent hole formed in the lower side face of the component body, and a valve element assembly capable of closing the lower side face vent hole of the component body in a downward and one-way mode is arranged in the cavity of the component body. The one-way circulation mechanism is arranged on the upper end face of the motor rotor, oil-gas mixed fluid in the motor rotor can be controlled to flow in the single direction of the oil blocking structure, so that the oil-gas separation effect is enhanced, the amount of refrigerant oil discharged by the compressor is reduced, and the influence of reduction of the refrigerant oil on the heat exchange efficiency of the air conditioning system is reduced. The refrigeration energy efficiency of the air-conditioning system can be improved, and the operation reliability of the compressor is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and in particular to a rolling rotor compressor of a household air-conditioning system. Background Art

[0002] In order to promote the system to obtain better performance matching effect, the rolling rotor compressor used in the household air conditioning system often needs to be optimized in design to reduce the negative impact of the amount of refrigerant oil discharged by the compressor on the heat exchange efficiency of the system. Therefore, the field needs to carry out a special optimization design for the oil discharge rate of the rolling rotor compressor to reduce the refrigerant oil discharged together with the refrigerant oil mixed with the refrigerant during operation.

[0003] like Figure 1 , Figure 3 As shown, a rolling rotor compressor of a conventional air conditioning system comprises a liquid distributor 1, a pump body assembly 2, a motor stator 3, a motor rotor 4 and a housing 5. The pump body assembly 2 is composed of a lower cover 2.1, a pump body 2.2, an upper cover 2.3 and a muffler 2.4 connected in sequence. The muffler 2.4 is used to eliminate the exhaust pulsation noise of the pump body assembly. The roller shaft 2.5 in the pump body 2.2 extends upward and serves as the shaft of the motor, that is, the roller shaft 2.5 and the motor shaft are the same shaft. The motor rotor 4 and the motor stator 3 fixed to the inner wall of the housing 5 are arranged outside the motor shaft. The motor rotor 4 is composed of a rotor main balance block 4.1, a rotor core 4.2, an oil retaining seat 4.3, an oil retaining member 4.4 and a rotor auxiliary balance block 4.5. The bottom of the liquid distributor 1 arranged on the outside of the compressor is connected to the inner cavity of the pump body 2.2 of the compressor.

[0004] When the compressor is running, the liquid distributor 1 supplies refrigerant to the pump body assembly. The gaseous refrigerant compressed by the compressor pump body assembly 2 carries tiny mist-like refrigerant oil out of the upper cover 2.3 of the pump body assembly 2, and is discharged after being silenced and reduced in noise by the muffler 2.4. It then flows axially through the motor stator and rotor 4 and is finally discharged from the exhaust port 7 at the top of the compressor, completing the working process of the compressor.

[0005] During this process, part of the atomized refrigeration oil carried in the gaseous refrigerant is discharged from the compressor along with the refrigerant, while the other part of the tiny mist-like refrigeration oil will gather on the inner wall of the outer shell 5 to form larger oil droplets, and flow down to the oil pool 8 below the outer shell for continued use. If various forms of oil-gas separation structures are not set inside the compressor, more and more refrigeration oil will be discharged from the compressor during operation, and the matching performance of the system is often poor at this time. The discharge of refrigeration oil will also cause the refrigeration oil level in the compressor oil pool 8 to decrease, resulting in insufficient refrigeration oil supply to mechanical parts such as the immersed pump body assembly 2, reducing the lubrication and cooling efficiency, causing greater wear of relatively moving mechanical parts, and thus reducing the reliability and life of the compressor.

[0006] In order to reduce the refrigeration oil discharged from the compressor along with the refrigerant and its adverse effect on the heat exchange of the air conditioning system, an oil retaining device for oil-gas separation is usually provided at the upper end of the motor rotor 4 in the art. Figure 2-Figure 5 As shown, the oil baffle device includes an oil baffle seat 4.3 with a through hole on the upper end surface of the motor rotor 4, and an oil baffle member 4.4 connected to the motor shaft end. The oil baffle member 4.4 is axially spaced a certain distance from the oil baffle seat 4.3. When the motor rotor 4 and the oil baffle device are axially connected to form a whole, the oil and gas channel 4.6 axially arranged in the motor rotor 4 is correspondingly communicated with the through hole of the oil baffle seat 4.3.

[0007] like Figure 2 As shown, during operation, the mixed fluid of gaseous refrigerant and misty refrigeration oil compressed by the compressor pump body assembly 2 is discharged from the muffler 2.4, then flows axially through the oil and gas channel 4.6 of the motor stator and rotor 4, and contacts and collides with the oil baffle member 4.4 above through the through hole of the oil baffle seat 4.3. Then, the oil baffle member 4.4 rotating with the motor shaft 2.5 can make the rising misty refrigeration oil condense into oil droplets on its wall, and under the centrifugal force of the rotation of the oil baffle member 4.4, splash and gather on the inner wall surface of the compressor outer body 5, further condense into large oil droplets, and flow back down along the inner wall of the shell to the oil pool 8 at the bottom of the compressor. Through the cooperation of the oil baffle seat 4.3 and the oil baffle member 4.4 arranged at the upper end of the motor rotor 4, the refrigeration oil in the mixed fluid of gaseous refrigerant and misty refrigeration oil can be separated and returned to the oil pool 8 for continued use. That is, the required refrigeration oil liquid level is maintained for the lubrication and cooling of the mechanical friction pair of the pump body assembly 2, while reducing the amount of refrigeration oil spitted out by the compressor, reducing the adverse effects on the heat exchanger of the air conditioning system. Thereby improving the refrigeration efficiency of the air-conditioning system and ensuring the reliability of compressor operation.

[0008] However, in order to balance the rotation of the pump body assembly 2 and the motor rotor 4, a rotor main balance block 4.1 is provided on the lower end surface of the motor rotor 4, and a rotor auxiliary balance block 4.5 is provided on the upper end surface of the motor rotor 4. During the rotation of the pump body assembly 2 and the motor rotor 4, the rotor main balance block 4.1 and the rotor auxiliary balance block 4.5 will generate pressure pulsation on the upper and lower chambers of the motor rotor 4, so that the flow direction and flow speed of the refrigerant entering and exiting the motor rotor 4 are in a pulsating state. Then, when the pressure pulsation of the upper chamber of the motor rotor 4 is small and the pressure pulsation of the lower chamber is large, it will promote the gaseous refrigerant and the atomized refrigeration oil to flow in the direction of the oil retaining member 4.4, that is, flow upward; and when the pressure pulsation of the upper chamber of the motor rotor 4 is large and the pressure pulsation of the lower chamber is small, the gaseous refrigerant and the atomized refrigeration oil will flow in the opposite direction of the oil retaining member 4.4, that is, flow downward. When the gaseous refrigerant and the atomized refrigeration oil flow in the opposite direction, they will interfere with and prevent the forward flow of the gaseous refrigerant and the atomized refrigeration oil, and further reduce the speed and flow rate of the gaseous refrigerant and the atomized refrigeration oil toward the oil baffle component 4.4, reduce the oil-gas separation effect of the oil baffle component 4.4, and have an adverse effect on the operation of the air-conditioning system.

[0009] Therefore, how to overcome the defect that the compressed refrigerant fluid cannot flow in a single direction toward the oil retaining member is a problem that needs to be solved in the art. Summary of the invention

[0010] In order to solve the technical problem that the refrigerant fluid after being compressed by the compressor cannot flow completely in a single direction toward the oil retaining member, the present invention provides a one-way flow mechanism, an oil retaining device having the one-way flow mechanism, and a compressor having the oil retaining device. The one-way flow mechanism can effectively prevent the refrigerant fluid from moving in the opposite direction of the oil retaining device, maximize the oil and gas diversion effect of the oil retaining device, reduce the discharge of the compressor refrigeration oil, and improve the refrigeration energy efficiency of the compressor.

[0011] The present invention provides a one-way flow mechanism, characterized in that it comprises a component body provided with a cavity, and air vents are respectively provided on the upper and lower sides of the component body, wherein a valve core assembly is provided in the cavity of the component body, which can one-way close the air vents on the lower side of the component body downward.

[0012] Preferably, the valve core assembly includes a valve chip that can cover the vent hole on the lower side of the component body, and a spring disposed between the valve chip and the upper side of the cavity of the component body.

[0013] Preferably, the component body is manufactured in parts, including a base provided with the lower side vents and a base cover provided with the upper side vents; when the base cover is closed with the base, the cavity is provided between the base cover and the base.

[0014] Preferably, the one-way flow mechanism is provided with a connection structure, which includes a connection hole column provided on the side surface of the base cover and a connection hole provided on the base, and the through hole in the connection hole column corresponds to the connection hole.

[0015] The oil blocking device provided by the present invention is characterized by comprising the one-way circulation mechanism and an oil blocking component connected above the one-way circulation mechanism.

[0016] Preferably, a support platform is provided on the lower surface of the oil retaining member, which is axially spaced from the one-way circulation mechanism, and the axial height of the support platform is equal to the axial height of the connecting hole column of the one-way circulation mechanism.

[0017] Preferably, the oil baffle member is a rotary oil baffle plate, the upwardly bent outer circumferential edge of which is provided with an oil through hole, and the bottom surface of the oil baffle plate is provided with a mounting hole corresponding to the connecting hole column of the one-way flow mechanism.

[0018] Preferably, the radial position of the vent hole on the upper side of the one-way flow mechanism is set corresponding to the outer diameter of the oil baffle plate.

[0019] The present invention also provides a compressor, characterized in that it comprises the oil retaining device integrally connected to the upper end of the motor rotor; the lower side vent holes of the one-way flow mechanism correspond to the oil and gas channels of the motor rotor.

[0020] Preferably, the oil retaining device is axially connected to the motor rotor as a whole through the through hole of the connecting hole column of the one-way circulation mechanism and the corresponding connecting hole on the oil retaining component.

[0021] The present invention sets a one-way flow mechanism at the upper end of the motor rotor. When the refrigerant fluid passing through the oil and gas pores of the electronic rotor flows toward the oil retaining device, the fluid opens the valve chip in the internal cavity through the lower side vent hole of the one-way flow mechanism and compresses the spring to open the flow channel, so that the fluid is discharged through the upper side vent hole, and finally the misty refrigerant oil is separated from the gaseous refrigerant by the oil retaining member rotating above and condensed and gathered. The centrifugal force generated by the oil retaining member then throws the refrigerant oil droplets toward the inner wall of the compressor housing, and then flows downward back to the oil pool at the bottom of the compressor. On the contrary, when the pressure in the upper cavity of the motor rotor is relatively large and the pressure in the lower cavity is relatively small, the fluid moves in the opposite direction of the oil retaining member, that is, moves downward. The valve chip of the one-way flow mechanism cavity closes the lower side vent hole of the one-way flow mechanism under the action of the spring, that is, the fluid cannot move in the downward direction. The one-way flow mechanism plays the role of opening when the fluid flows in the direction of the oil retaining member and closing when the fluid flows in the opposite direction. That is, when the compressor is running at high speed and with large pressure pulsation, it can still ensure that more mixed fluid of gaseous refrigerant and mist refrigeration oil in the oil and gas pores of the motor rotor moves in a single direction toward the desired oil baffle component, thereby promoting the improvement of the oil baffle effect of the oil baffle component, thereby achieving the purpose of reducing the oil discharge rate of the compressor, making the air-conditioning system using this compressor more energy-efficient, the liquid level of the oil pool at the bottom of the compressor guaranteed, and the reliability better. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a cross-sectional view of a rolling rotor compressor;

[0023] Figure 2 It is a schematic diagram of the oil-gas flow and oil-gas separation flow direction when the rolling rotor compressor is running;

[0024] Figure 3 It is a schematic diagram of the components of the inner core of a rolling rotor compressor;

[0025] Figure 4 A top view of a motor rotor of a compressor;

[0026] Figure 5 A top view of an oil retaining seat in an existing compressor;

[0027] Figure 6 It is a schematic diagram of the components of the inner core of a rolling rotor type compressor having the one-way flow mechanism provided by the present invention;

[0028] Figure 7 A cross-sectional view of an embodiment of a one-way flow mechanism provided by the present invention;

[0029] Figure 8 for Figure 7 Top view of the .

[0030] In the figure:

[0031] 1- Dispenser;

[0032] 2-Pump body assembly;

[0033] 2.1-lower cover; 2.2-pump body; 2.3-upper cover; 2.4-muffler; 2.5-roller shaft;

[0034] 3- Motor stator;

[0035] 4-motor rotor;

[0036] 4.1- rotor main balance block; 4.2- rotor core; 4.3- oil baffle seat; 4.4- oil baffle member;

[0037] 4.5-rotor counterweight; 4.6-oil and gas passage; 4.7-rotating shaft hole; 4.8-through hole;

[0038] 5- housing;

[0039] 6-One-way circulation mechanism;

[0040] 6.1-base; 6.2-valve chip; 6.3-spring; 6.4-base cover; 6.5-upper side vent;

[0041] 6.6-lower side vent; 6.7-connection hole column; 6.8-connection hole;

[0042] 7- Exhaust port;

[0043] 8-Oil pool. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain the present invention and do not constitute a limitation to the present invention.

[0045] Please refer to Figure 7 , Figure 8 As shown, an embodiment of a one-way flow mechanism 6 provided by the present invention comprises a component body provided with a cavity, an upper side vent hole 6.5 provided on the upper end surface of the component body, and a lower side vent hole 6.6 provided on the lower end surface of the component body. Both the upper and lower side vent holes are connected to the cavity of the component body. A valve core assembly capable of downwardly one-way closing the lower side vent hole 6.6 of the component body is provided in the cavity of the component body.

[0046] like Figure 7 , Figure 8As shown, in this embodiment, the valve core assembly includes a valve core 6.2 that can cover the vent holes 6.6 on the lower side of the component body, and a spring 6.3 disposed between the valve core 6.2 and the upper side of the component body cavity. That is, when the valve core 6.2 is subjected to downward pressure, the valve core 6.2 moves downward and can close all the vent holes 6.6 on the lower side of the one-way flow mechanism 6. When the valve core 6.2 is subjected to upward pressure, the valve core 6.2 moves upward and opens all the vent holes 6.6 on the lower side, and at the same time, all the vent holes 6.5 on the upper side of the component body are also opened. That is, the one-way flow mechanism 6 can implement upward one-way opening control.

[0047] like Figure 7 , Figure 8 As shown, the component body of this embodiment is manufactured in parts, and includes a base 6.1 provided with the lower side vent 6.6 and a base cover 6.4 provided with the upper side vent 6.5. When the base cover 6.4 is closed with the base 6.1, there is the cavity between the base cover and the base. The component body of this embodiment can also be manufactured in one piece as needed, such as precision casting. As long as the component body has a cavity of a certain size and can be installed with the valve core assembly. A connecting structure is provided on one side of the one-way flow mechanism 6, and the connecting structure includes a connecting hole column 6.7 provided on the upper side of the base cover 6.4 and a connecting hole 6.8 provided on the base 6.1. The connecting hole 6.8 and the through hole of the connecting hole column 6.7 are correspondingly connected, and are used to connect with the motor rotor 4 and the oil retaining structure 4.4. Therefore, the through holes of the connecting hole 6.8 and the connecting hole column 6.7 are not connected with the cavity of the one-way flow mechanism 6.

[0048] like Figure 7As shown, the one-way flow mechanism 6 provided by the present invention has a cavity provided therein that is used as a fluid channel, and a valve core assembly can also be provided in the cavity, so as to effectively control the one-way flow mechanism 6 to be opened in a single direction. The valve core assembly can be flexibly selected as needed, that is, components of different shapes can be selected as valve cores, for example, spherical, cylindrical, etc., as long as a one-way sealing effect can be produced. The valve core assembly of this embodiment is composed of a valve chip 6.2 and a spring 6.3. The valve chip is a sheet structure, which is easy to cooperate with the lower side surface in the cavity of the one-way flow mechanism 6 to seal, and it is also easy to close the multiple vents arranged in an annular manner on the lower side surface in the cavity. A spring is used as a movable reset component of the valve chip, and the seal reset is reliable and easy to install. When the component body of the one-way flow mechanism 6 adopts a split structure, the base cover 6.4 and the base 6.1 can be stamped and formed, which is easy to prepare and install, and can adapt to the processing of components of different sizes. A connecting hole column 6.7 with a certain axial height is arranged on the upper side of the base cover 6.4 of the one-way circulation mechanism 6. In addition to being used for connection, it can also play an isolation role, that is, the upper side of the one-way circulation mechanism 6 maintains a certain distance from the upper oil retaining member 4.4 to facilitate oil and gas separation.

[0049] like Figure 6 , Figure 7 , Figure 8 As shown, an embodiment of an oil-blocking device provided by the present invention includes the one-way circulation mechanism 6 provided by the present invention and an oil-blocking component 4.4 connected to the top of the one-way circulation mechanism 6. In this embodiment, the lower surface of the oil-blocking component 4.4 is provided with a support platform that maintains an axial distance from the one-way circulation mechanism 6, and the axial height of the support platform is equal to the axial height of the connecting hole column 6.7 on the upper side of the one-way circulation mechanism. The oil-blocking component 4.4 is a rotary oil-blocking plate, the outer circular edge of which is bent upward, and oil holes are provided around the outer circular edge, and the bottom surface of the oil-blocking plate is provided with mounting holes corresponding to the connecting hole column 6.7 of the one-way circulation mechanism 6. The radial position of the vent hole 6.5 on the upper side of the one-way circulation mechanism 6 corresponds to the outer diameter of the oil-blocking plate.

[0050] The oil-blocking device provided by the present invention adopts a one-way flow mechanism 6 to replace the existing oil-blocking seat 4.3, so that the oil-gas fluid passing through the one-way flow mechanism 6 can only flow in one direction, so as to separate the oil and gas with maximum efficiency. A support platform with the same axial height as the connecting hole column 6.7 on the upper side of the one-way flow mechanism 6 is provided on the lower surface of the oil-blocking component 4.4. During installation and connection, the support platform can not only maintain a certain axial distance between the oil-blocking component 4.4 and the one-way flow mechanism 6, but also form a supporting cooperation with the connecting hole column 6.7, so that the connection between the oil-blocking component 4.4 and the one-way flow mechanism 6 is stable and reliable. The oil-blocking component 4.4 is made into a rotary oil-blocking plate, and the outer circular edge of the oil-blocking plate is bent upward, and oil holes are provided around the outer circular edge. When the oil-blocking component 4.4 rotates, a large area of ​​accumulated mist-like refrigeration oil can be obtained, so as to improve the oil-gas separation efficiency. In addition, it is also convenient to set a counterweight in the oil-blocking plate to achieve the dynamic balance of the motor rotor 4. In particular, the upper side vent hole 6.5 arranged in an annular manner on the upper side of the one-way flow mechanism 6 is arranged as close to the outer diameter of the oil baffle plate as possible along the radial direction of the one-way flow mechanism 6. During operation, the oil and gas fluid can be distributed on the outer circle of the oil baffle member 4.4 with a faster rotational speed, which is more conducive to promoting the oil and gas separation effect of the oil baffle member 4.4. The vent hole can also be directly arranged radially.

[0051] Please refer to Figure 1 , a conventional rolling rotor compressor of an air conditioning system, comprising a liquid distributor 1, a pump body assembly 2, a motor stator 3, a motor rotor 4 and a housing 5. The pump body assembly 2 is composed of a lower cover 2.1, a pump body 2.2, an upper cover 2.3 and a muffler 2.4 connected in sequence. The muffler 2.4 is used for a pump body assembly to eliminate exhaust pulsation noise. The roller shaft 2.5 in the pump body 2.2 passes upward through the rotating shaft hole 4.7 of the motor rotor 4 and serves as the shaft of the motor, that is, the roller shaft 2.5 and the motor shaft are the same shaft. The motor rotor 4 and the corresponding motor stator 3 fixed to the inner wall of the housing 5 are arranged outside the motor shaft. The motor rotor 4 is composed of a rotor main balance block 4.1, a rotor core 4.2, an oil baffle seat 4.3, an oil baffle member 4.4, and a rotor auxiliary balance block 4.5. The bottom of the liquid distributor 1 arranged on the outside of the compressor is connected to the inner cavity of the pump body 2.2 of the compressor.

[0052] like Figure 2-Figure 5As shown, in order to reduce the refrigeration oil discharged along with the refrigerant in the compressor and its adverse effect on the heat exchange of the air conditioning system, an oil baffle device for oil-gas separation is provided at the upper end of the motor rotor 4. The oil baffle device includes an oil baffle seat 4.3 with a through hole 4.8 provided on the upper end face of the motor rotor 4, and an oil baffle member 4.4 provided above the oil baffle seat and connected to the end face of the motor shaft. During operation, the mixed fluid of the gaseous refrigerant and the mist-like refrigeration oil flowing through the oil-gas channel 4.6 of the motor rotor 4 passes through the through hole 4.8 of the oil baffle seat 4.3 and collides with the oil baffle member 4.4 above, thereby separating the refrigeration oil in the mixed fluid and returning it to the oil pool 8.

[0053] However, in order to balance the rotation of the pump assembly 2 and the motor rotor 4, a rotor auxiliary balance block 4.5 and a rotor main balance block 4.1 are respectively provided on the upper and lower end surfaces of the motor rotor 4. During the movement, the upper and lower balance blocks will generate pressure pulsation on the upper and lower chambers of the motor rotor 4, which will cause the mixed fluid of the gaseous refrigerant and the atomized refrigeration oil to flow in a non-unidirectional direction, thereby reducing the speed and flow rate of the mixed fluid flowing in a single direction toward the oil retaining member 4.4, thereby reducing the oil-gas separation effect of the oil retaining member 4.4.

[0054] In order to overcome the technical problem that the existing oil blocking device cannot make the fluid flow in a single direction toward the oil blocking component, resulting in a low oil-gas separation effect, a new oil blocking device is provided, in which the one-way flow mechanism 6 provided by the present invention is used to replace the existing oil blocking seat 4.3. Figure 6 , Figure 7 and Figure 8 As shown, the oil retaining device is connected to the upper end face of the motor rotor 4 as a whole, and the vent hole 6.6 on the lower side of the one-way flow mechanism 6 is correspondingly connected to the oil and gas channel 4.6 of the motor rotor 4. Moreover, the oil retaining device is axially connected to the motor rotor 4 as a whole through the through hole of the connecting hole column 6.7 of the one-way flow mechanism 6, the connecting hole 6.8 of the base and the corresponding connecting hole on the oil retaining member 4.4. At the same time, the rotor auxiliary balance block 4 is arranged on the right side of the oil retaining plate, and the rotor main balance block 4.1 is arranged on the left side of the lower end face of the motor rotor 4.

[0055] like Figure 6 , Figure 7In the embodiment shown, the roller shaft 2.5 rotates, the mixed fluid is compressed by the pump body assembly 2 and discharged after passing through the muffler 2.4 to reduce noise. The discharged mixed fluid flows through the motor rotor 4 and impacts the one-way flow mechanism 6 above. The built-in valve chip 6.2 originally fits with the inner surface of the base 6.1 under the pressure of the back spring 6.3 and seals the lower side vent 6.6 on the base 6.1. However, under the upward impact of the mixed fluid, the valve chip 6.2 overcomes the force of the spring 6.3 and moves upward, opening and sealing the vent 6.6 of the base 6.1, so that the flow channel is in an open state. That is, after the mixed fluid enters the cavity of the one-way flow mechanism 6, it is discharged through the upper side vent hole 6.5 set on the base cover 6.4, and then hits the rotating oil baffle member 4.4 above. The atomized refrigeration oil in the mixed fluid slowly condenses into large oil droplets on the inner and outer wall surfaces of the oil baffle member 4.4, and then under the action of the rotating centrifugal force of the oil baffle member 4.4, the oil droplets are thrown on the inner wall of the compressor shell 5 and then condense into large oil droplets and flow back along the shell 5 to the oil pool 8 at the bottom of the compressor. When the upper and lower chambers of the motor rotor 4 generate pressure pulsations, the mixed fluid flows in the opposite direction of the oil baffle member 4.4, that is, flows downward. At this time, the valve chip 6.2 in the one-way flow mechanism 6 moves downward and is close to the inner surface of the base 6.1 under the combined action of the mixed fluid pressure and the spring 6.3, and closes the lower side vent hole 6.6 on the base 6.1, thereby preventing the mixed fluid from flowing downward and eliminating the obstruction of the reverse fluid to the forward fluid flow. The one-way flow mechanism 6 provided by the present invention controls the flow direction of the refrigerant gas and the atomized refrigeration oil mixed fluid in the motor rotor, increases the flow rate of the ideal flow direction, enhances the oil-gas separation effect of the oil retaining member 4.4, reduces the amount of refrigeration oil spitted out by the compressor, and reduces the impact of the reduction of refrigeration oil on the heat exchange efficiency of the air conditioning system. It can improve the refrigeration energy efficiency of the air conditioning system and ensure the reliability of the compressor operation.

[0056] It should be noted that the terms used in this specification are only for describing specific embodiments and are not intended to limit the present invention. Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the technical features and steps described in these embodiments do not limit the scope of protection of the present invention. For the technology, methods and equipment known to ordinary technicians in the relevant field, this specification is not discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of this specification. Any specific value in this specification should be interpreted as being merely exemplary and not constituting a limitation of the present invention.

[0057] For the convenience of description, the terms describing the position used in the specification, such as "above...", "to the left of...", "in front of...", etc., are only used to describe the spatial position relationship between a certain component and other components of the embodiment shown in the figure. When the position of the component is different, the relative position will change. Therefore, the position relationship of the embodiment of the drawing should not constitute a limitation to the present invention.

[0058] In addition, it should be noted that the terms "first", "second" and the like used in the specification are only used to distinguish similar components, and there is no order of precedence, so they cannot be understood as limiting the scope of protection of the present invention. The above description is only a specific embodiment of the present invention. It should be pointed out that

[0059] Any modifications, equivalent substitutions and changes made within the spirit and framework of the present invention should be included in the protection scope of the present invention.

Claims

1. A one-way flow mechanism, characterized in that: The invention comprises a component body with a cavity, an upper side vent hole arranged on the upper side of the component body, and a lower side vent hole arranged on the lower side. A valve core component capable of downwardly closing the lower side vent hole of the component body is arranged in the cavity of the component body.

2. The one-way flow mechanism according to claim 1, characterized in that: The valve core assembly includes a valve core that can cover the vent hole on the lower side of the component body, and a spring arranged between the valve core and the upper side of the cavity of the component body.

3. The one-way flow mechanism according to claim 1, characterized in that: The component body is manufactured in parts, including a base provided with the lower side vent holes and a base cover provided with the upper side vent holes; when the base cover is closed with the base, the cavity is provided between the base cover and the base.

4. The one-way flow mechanism according to claim 1, characterized in that: The one-way flow mechanism is provided with a connection structure, which includes a connection hole column arranged on the upper side of the component body and a connection hole arranged on the lower side of the component body, and the through hole in the connection hole column corresponds to the connection hole.

5. An oil retaining device, characterized in that: It comprises the one-way circulation mechanism as described in any one of claims 1 to 4, and an oil blocking component connected above the one-way circulation mechanism.

6. The oil retaining device according to claim 5, characterized in that: A support platform which keeps an axial distance from the one-way circulation mechanism is provided on the lower surface of the oil blocking member, and the axial height of the support platform is equal to the axial height of the connecting hole column of the one-way circulation mechanism.

7. The oil retaining device according to claim 5, characterized in that: The oil baffle member is a rotary oil baffle plate, whose upwardly bent outer circumferential edge is provided with an oil through hole, and the bottom surface of the oil baffle plate is provided with a mounting hole corresponding to the connecting hole column of the one-way flow member.

8. The oil retaining device according to claim 5, characterized in that: The radial position of the air vent hole on the upper side of the one-way circulation mechanism is set corresponding to the outer diameter of the oil blocking component.

9. A compressor, characterized in that: It comprises an oil retaining device as described in any one of claims 5 to 8, which is connected to the upper end of the motor rotor as a whole; the lower side vent hole of the one-way flow mechanism corresponds to the oil and gas channel of the motor rotor.

10. The compressor according to claim 9, characterized in that The oil retaining device is axially connected to the motor rotor as a whole through the through hole of the connecting hole column of the one-way circulation mechanism and the corresponding connecting hole on the oil retaining component.

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