Volume-variable air cylinder, pump body, compressor and air conditioner

Abstract

The utility model discloses a variable-capacity air cylinder, a pump body, a compressor and an air conditioner, and relates to the technical field of compressors, the variable-capacity air cylinder comprises an air cylinder body, a variable-capacity mechanism and a locking mechanism, and the air cylinder body is provided with a compression containing cavity; the variable volume mechanism is movably arranged in the compression containing cavity; the locking mechanism can adjust the volume changing mechanism in a tightness mode so as to control the motion state of the volume changing mechanism. According to the variable-capacity air cylinder, the variable-capacity structure of the compressor can be simplified, so that the system response time is shortened.

Description

Technical Field

[0001] The present application relates to the technical field of compressors, and in particular to a variable volume cylinder, a pump body, a compressor and an air conditioner. Background Art

[0002] Air conditioning compressors drive refrigerant in the air conditioning refrigerant circuit and are generally installed in outdoor units. Some air conditioning compressors on the market currently use rolling rotors, which are widely used in the refrigeration and heating industries due to their simple structure, low cost, and high reliability, such as air conditioners, water heaters, and refrigeration equipment.

[0003] The inventors found in practice that the existing compressor capacity-changing means are relatively complex and the system response time is relatively long. These limitations restrict the widespread application of variable frequency capacity-changing technology in the industry. Therefore, how to simplify the compressor capacity-changing structure to reduce the system response time is a technical problem that needs to be solved urgently in the industry. Utility Model Content

[0004] The purpose of the present application is to provide a variable capacity cylinder, a pump body, a compressor and an air conditioner, which can simplify the variable capacity structure of the compressor to reduce the system response time.

[0005] To achieve the above objectives, the present application provides a variable volume cylinder, comprising:

[0006] The cylinder body is provided with a compression chamber;

[0007] A variable volume mechanism, movably disposed in the compression chamber;

[0008] The locking mechanism can adjust the tightness of the variable capacity mechanism to control the movement state of the variable capacity mechanism.

[0009] In some embodiments, the cylinder body is provided with a motion channel for the variable volume mechanism to be movably assembled; the locking mechanism comprises:

[0010] Locking block;

[0011] A preset force component, the preset force component is connected to the locking block, and the preset force component is used to apply a preset force to the locking block so that the locking block is kept in a state of exiting the movement channel under the action of the preset force;

[0012] A working force assembly is connected to the locking block, and the working force assembly is used to apply a working force to the locking block, so that the locking block overcomes the effect of the preset force assembly on applying the preset force to the locking block under the action of the working force.

[0013] In some embodiments, the pre-set force assembly includes a fixing member and an elastic member, the fixing member is installed in the cylinder body, the first end of the elastic member is connected to the fixing member, and the second end of the elastic member is connected to the locking block.

[0014] In some embodiments, the actuating force assembly includes a driving member and a transmission member, wherein the driving member is installed in the cylinder body, and the transmission member is installed on the driving member, and the driving member applies force to the locking block through the transmission member.

[0015] In some embodiments, the cylinder body is also provided with a locking channel communicated with the motion channel, the locking block is movably assembled in the locking channel, and the locking channel is arranged at an angle to the motion channel; a passive inclined surface is arranged on the side of the locking block away from the motion channel, and the passive inclined surface is used to convert the force acting on the locking block into movement along the locking channel.

[0016] In some embodiments, each cylinder body is configured with multiple sets of the locking mechanisms, the multiple sets of the locking mechanisms are distributed along the axial direction of the cylinder body, and the multiple locking blocks of the multiple sets of the locking mechanisms are distributed on the same side of the variable capacity mechanism.

[0017] In some embodiments, the variable displacement cylinder includes two cylinder bodies, the two cylinder bodies are distributed along the axial direction of the variable displacement cylinder, each cylinder body is configured with two sets of the locking mechanisms, and four sets of the locking mechanisms are distributed along the axial direction of the variable displacement cylinder.

[0018] The present application also provides a pump body, which includes the above-mentioned variable capacity cylinder.

[0019] The present application also provides a compressor, which includes the above-mentioned pump body.

[0020] The present application also provides an air conditioner, which includes the above-mentioned compressor.

[0021] Compared with the above-mentioned background technology, the variable volume cylinder provided in the present application mainly includes a cylinder body, a variable volume mechanism and a locking mechanism. The cylinder body is provided with a compression chamber; the variable volume mechanism can be movably arranged in the compression chamber; the locking mechanism can adjust the tightness of the variable volume mechanism to control the movement state of the variable volume mechanism.

[0022] The variable displacement cylinder can be applied to a pump body, and the pump body can be further applied to a compressor; during the working process of the variable displacement cylinder, the compressor is variable in volume according to the need to adapt to different refrigeration needs, optimize energy efficiency, start and stop smoothly, prevent mechanical failures, and adapt to environmental changes. The variable displacement cylinder has at least two working modes, including a non-variable displacement mode and a variable displacement mode, depending on whether the volume is variable or not. In the non-variable displacement mode, the locking mechanism does not work, and the variable displacement mechanism remains in a state of abutting against the piston. At this time, the compressor works normally, and the variable displacement cylinder of the compressor operates with a fixed volume. In the variable displacement mode, the locking mechanism works, and the locking mechanism locks the variable displacement mechanism and locks the position of the variable displacement mechanism, which is equivalent to releasing the state of abutting against the piston of the variable displacement mechanism. At this time, the cylinder body of the variable displacement cylinder is in an idling non-compressed state, so that the number of cylinder bodies that work and compress changes, and the volume of the variable displacement cylinder changes, thereby realizing the variable displacement function.

[0023] In combination with the above structure and process description, it can be seen that the variable capacity cylinder has at least the following beneficial effects: the variable capacity cylinder can simplify the compressor variable capacity structure to reduce the system response time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0025] Figure 1 A structural diagram of a compressor provided in an embodiment of the present application, with a plane parallel to the axis of the compressor as a cross-section;

[0026] Figure 2 A structural diagram of a compressor provided in an embodiment of the present application, with a plane perpendicular to the axis of the compressor as a cross-section;

[0027] Figure 3 for Figure 2 An enlarged structural diagram of the position of the middle variable capacity mechanism and the locking mechanism;

[0028] Figure 4 The cylinder body provided in the embodiment of the present application is Figure 1 Structural diagram from perspective;

[0029] Figure 5 The locking block and the variable capacity mechanism provided in the embodiment of the present application are Figure 2 Structural diagram from perspective;

[0030] Figure 6 The locking block and the variable capacity mechanism provided in the embodiment of the present application are Figure 1 Structural diagram from perspective.

[0031] in:

[0032] Shell 1,

[0033] Cylinder body 2, compression chamber 201, movement channel 202, locking channel 203, fixing groove 204, installation groove 205,

[0034] Piston 3,

[0035] Variable capacity mechanism 4.

[0036] The locking mechanism 5 , the locking block 51 , the driven inclined surface 5101 , the locking surface 5102 , the impact reduction fillet 5103 , the pre-set force component 52 , the fixing part 521 , the elastic part 522 , the working force component 53 , the driving part 531 , and the transmission part 532 . DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0039] First of all, it is necessary to explain the composition and function of the vane compressor. The main components of the vane compressor include the body (cylinder), rotor, vane, crank-connecting rod mechanism, drive device, etc., and each component has its specific function. The body (cylinder) is the main part of the compressor, usually made of cast iron or steel. It provides a closed space so that the gas can be compressed. The rotor is eccentrically arranged in the cylinder, and a number of longitudinal grooves are opened on it. These grooves are equipped with vanes that can slide freely in the radial direction. Due to the eccentric configuration of the rotor, a crescent-shaped space is formed between the inner wall of the cylinder and the outer surface of the rotor. The vane is the core component of the vane compressor, and its function is to reciprocate on the crankshaft to compress the gas. The vane is usually made of high-quality alloy materials with high hardness and wear resistance. The crank-connecting rod mechanism converts the rotational motion into reciprocating motion and drives the vane to compress the gas. The crankshaft connects the vane through a connecting rod to form a motion transmission chain. This mechanism is reasonably designed and can effectively convert rotational motion into reciprocating motion. The driving device includes an electric motor, which provides power to rotate the rotor in the cylinder, thereby driving the sliding vane to compress the gas.

[0040] During the working process of the vane compressor, as the rotor rotates continuously, the volume of the unit cell changes repeatedly according to a certain rule. When the volume of the unit cell gradually increases, gas begins to be sucked in; when the volume of the unit cell begins to decrease, the gas is compressed inside it; when the volume of the unit cell is connected to the exhaust port, the compression process ends and exhaust begins.

[0041] In general, the vane compressor has the characteristics of simple structure, high reliability and easy maintenance. Its reasonable structural design and the selection of high-quality materials ensure the working efficiency and service life of the compressor. This compressor is widely used in air conditioning, refrigeration equipment, automobile manufacturing and other fields, providing the necessary gas compression and circulation for our life and industrial production.

[0042] Please refer to Figure 1 and Figure 2 , Figure 1 This is a structural diagram of a compressor provided in an embodiment of the present application, with a plane parallel to the axis of the compressor as a cross-section. Figure 2 This is a structural diagram of a compressor provided in an embodiment of the present application, with a plane perpendicular to the axis of the compressor as a cross-section.

[0043] In a first specific embodiment, Figure 1 and Figure 2 As shown, the variable volume cylinder provided by the embodiment of the present application mainly includes a cylinder body 2, a variable volume mechanism 4 and a locking mechanism 5. The cylinder body 2 is provided with a compression chamber 201; the variable volume mechanism 4 can be movably arranged in the compression chamber 201; the locking mechanism 5 can adjust the tightness of the variable volume mechanism 4 to control the movement state of the variable volume mechanism 4.

[0044] In addition, a piston 3 is rotatably mounted in the compression chamber 201, and the variable capacity mechanism 4 is used to abut against the piston 3 when the variable capacity cylinder is working.

[0045] The variable displacement cylinder can be applied to a pump body, and the pump body can be further applied to a compressor; during the working process of the variable displacement cylinder, the compressor is variable in volume according to the need to adapt to different refrigeration needs, optimize energy efficiency, start and stop smoothly, prevent mechanical failures, and adapt to environmental changes. The variable displacement cylinder has at least two working modes, including a non-variable displacement mode and a variable displacement mode, depending on whether the volume is variable or not. In the non-variable displacement mode, the locking mechanism 5 does not work, and the variable displacement mechanism 4 remains in a state of abutting against the piston 3. At this time, the compressor works normally, and the variable displacement cylinder of the compressor operates with a fixed volume. In the variable displacement mode, the locking mechanism 5 works, and the locking mechanism 5 locks the variable displacement mechanism 4 and locks the position of the variable displacement mechanism 4, which is equivalent to releasing the state of abutting against the piston 3. At this time, the cylinder body 2 of the variable displacement cylinder is in an idling non-compressed state, so that the number of cylinder bodies 2 that work and compress changes, and the volume of the variable displacement cylinder changes, thereby realizing the variable displacement function.

[0046] In order to improve the variable capacity of the variable capacity cylinder, the variable capacity cylinder can be provided with multiple cylinder bodies 2, and the multiple cylinder bodies 2 are equipped with variable capacity mechanisms 4 and locking mechanisms 5. In this way, when the variable capacity cylinder is needed to provide a variable capacity function, according to the required degree of variable capacity, a certain number of cylinder bodies 2 can be controlled to idle and a certain number of cylinder bodies 2 can be kept compressed, so as to control the working number of cylinder bodies 2 and achieve the expected variable capacity effect.

[0047] In combination with the above structure and process description, it can be seen that the variable capacity cylinder has at least the following beneficial effects: the variable capacity cylinder can simplify the compressor variable capacity structure to reduce the system response time.

[0048] Furthermore, the cylinder body 2 is also provided with a motion channel 202 for movable assembly of the variable volume mechanism 4. The motion channel 202 can be regarded as a part of the compression chamber 201. The motion channel 202 is in communication with the space of the compression chamber 201 accommodating the piston 3.

[0049] In this embodiment, the locking mechanism 5 includes a locking block 51, which is controlled to enter the motion channel 202 and lock the position of the variable capacity mechanism 4, thereby changing the state relationship between the slide and the compression chamber 201 to achieve the variable capacity function.

[0050] It should be noted that the variable volume cylinder of this embodiment has obvious advantages of simplified structure and reduced cost compared with the existing variable volume cylinder that relies on pressure difference control. This embodiment directly controls the position of the variable volume mechanism 4 through the locking mechanism 5, rather than relying on the pressure difference generated by the complex piping system, thereby reducing the complexity of the system, improving the response speed, and enhancing the reliability. In addition, the variable volume cylinder of this embodiment can adapt to different working conditions and refrigeration requirements more flexibly, providing a wider range of applications, and at the same time, by accurately controlling the variable volume mechanism 4, higher energy efficiency and stronger environmental adaptability are achieved. The simplified design makes the maintenance and repair process faster and more convenient, effectively reducing the maintenance cost and time required.

[0051] In some cases, the locking block 51 contacts the variable volume mechanism 4 by surface compression, generating sufficient friction to achieve locking. In order to ensure the effectiveness of this locking method, the material selection of the locking block 51 and the variable volume mechanism 4 is crucial. The locking block 51 is usually made of a material with high hardness and wear resistance, such as high-speed steel or nitrided stainless steel, to ensure its durability and reliability during repeated locking and releasing. At the same time, the material of the variable volume mechanism 4 also needs to have good wear resistance and deformation resistance to maintain its structural stability and extend its service life. Such material selection not only ensures the effectiveness of the locking mechanism, but also helps to reduce overall costs, because these materials usually have a longer service life, reducing the frequency of maintenance and replacement.

[0052] In some cases, the variable displacement mechanism 4 includes a slide and a spring, and the slide is kept in a state of resistance with the piston 3 under the continuous action of the spring, thereby participating in the compression process. It should be noted that the motion state of the slide referred to here corresponds to the motion state of the variable displacement mechanism 4, so the tightness adjustment of the variable displacement mechanism 4 by the locking mechanism 5 corresponds to the tightness adjustment of the slide by the locking mechanism 5.

[0053] When the locking mechanism 5 is activated to lock the slide, it generates enough force to overcome the reaction force of the spring, resulting in the release of the contact state between the slide and the piston 3. This mechanism allows the variable volume cylinder to adjust its internal volume by changing the interaction between the slide and the piston 3, realizing the variable volume function to adapt to different working conditions and refrigeration requirements. Among them, when the locking mechanism 5 is activated to lock the slide, the slide is stored in the motion channel 202.

[0054] Please continue to refer to Figure 1 In some embodiments, the locking mechanism 5 includes a presetting force component 52 and an actuating force component 53 .

[0055] The preset force assembly 52 is connected to the locking block 51 , and is used to apply a preset force to the locking block 51 , so that the locking block 51 is kept in a state of exiting the movement channel 202 under the action of the preset force.

[0056] The actuating force assembly 53 is connected to the locking block 51 , and is used to apply an actuating force to the locking block 51 , so that the locking block 51 overcomes the effect of the preset force assembly 52 on applying the preset force to the locking block 51 under the action of the actuating force.

[0057] In this embodiment, the presetting force assembly 52 and the actuating force assembly 53 are divided into two design schemes according to the effect of the action.

[0058] In the first design scheme, the preset force component 52 is designed to apply a preset force to the locking block 51 and keep the locking block 51 in a state of exiting the movement channel 202, and the actuating force component 53 is designed to apply an actuating force to the locking block 51 and enable the locking block 51 to overcome the action of the preset force component 52 and enable the locking block 51 to enter the state of the movement channel 202.

[0059] The role of the preset force is to ensure that the locking block 51 is in a state of exiting the motion channel 202 by default. This design ensures that in the normal operation of the variable displacement cylinder, the locking block 51 will not interfere with the normal operation of the variable displacement mechanism 4. The actuating force component 53 is designed to apply an actuating force to the locking block 51 when necessary. This force is large enough to overcome the preset force applied by the preset force component 52 and cause the locking block 51 to enter the motion channel 202. At this time, the locking block 51 locks the variable displacement mechanism 4 in a specific position, changes the working volume of the variable displacement cylinder, and realizes the variable displacement function.

[0060] In the second design scheme, the preset force component 52 is designed to apply a preset force to the locking block 51 and keep the locking block 51 in a state of entering the movement channel 202, and the actuating force component 53 is designed to apply an actuating force to the locking block 51 and enable the locking block 51 to overcome the action of the preset force component 52 and enable the locking block 51 to exit the movement channel 202.

[0061] The role of the preset force is to ensure that the locking block 51 is in the state of entering the motion channel 202 by default, so that the variable volume mechanism 4 is locked in a specific position at the beginning. The actuating force component 53 is designed to apply an actuating force to the locking block 51 when necessary, and this force is large enough to overcome the preset force applied by the preset force component 52, so that the locking block 51 exits the motion channel 202 and releases the lock on the variable volume mechanism 4. This design allows the variable volume cylinder to quickly switch from the variable volume state to the non-variable volume state when necessary to adapt to different working conditions and refrigeration needs.

[0062] In a specific embodiment, the variable displacement cylinder adopts the first design scheme, that is, the preset force component 52 is designed to apply a preset force to the locking block 51 and keep the locking block 51 in a state of exiting the motion channel 202, and the actuating force component 53 is designed to apply an actuating force to the locking block 51 and enable the locking block 51 to overcome the action of the preset force component 52 and enable the locking block 51 to enter the state of the motion channel 202. The subsequent description will mainly be described in this way.

[0063] Please refer to Figure 3 , Figure 3 for Figure 2 An enlarged structural diagram showing the locations of the variable capacity mechanism and the locking mechanism.

[0064] In some embodiments, the pre-force assembly 52 includes a fixing member 521 and an elastic member 522 .

[0065] In this embodiment, the cylinder body 2 is provided with a fixing groove 204, and the fixing member 521 is installed in the fixing groove 204. One end of the elastic member 522 is connected to the fixing member 521, and the other end is connected to the locking block 51. Such a design enables the elastic member 522 to transmit the preset force to the locking block 51.

[0066] In some cases, through the stable support of the fixing member 521 and the elastic action of the elastic member 522, the preset force component 52 can effectively keep the locking block 51 in the initial state of exiting the movement channel 202 until the operating force component 53 applies sufficient force to overcome the preset force, thereby realizing the action of the locking block 51 entering the movement channel 202.

[0067] Optionally, the fixing member 521 is a bolt, and the elastic member 522 is a tension spring.

[0068] In some embodiments, the actuating force assembly 53 includes a driving member 531 and a transmission member 532 .

[0069] In this embodiment, the driving member 531 is installed on the shell 1 and is responsible for generating the required driving force; and the transmission member 532 is installed in the mounting groove 205 of the cylinder body 2 and is responsible for transmitting the force generated by the driving member 531 to the locking block 51, thereby realizing the control of the locking block 51. This design structure ensures the effective transmission and precise control of force, and improves the reliability and efficiency of the entire locking system.

[0070] In some cases, through the reliable drive of the driving member 531 and the precise transmission of the transmission member 532, the operating force assembly 53 can accurately switch the locking block 51 to a state of entering the motion channel 202 and maintain a stable state, thereby achieving locking of the variable capacity mechanism 4 by the locking block 51.

[0071] It should be noted that the driving member 531 serves as an actuator for controlling the action of the locking block 51 , and has a variety of working principles and structural options, including but not limited to electric, pneumatic and hydraulic, such as a motor, etc., which should all fall within the scope of the description of this embodiment.

[0072] Please continue to refer to Figure 3 In some embodiments, the cylinder body 2 is further provided with a locking channel 203 communicating with the motion channel 202, the locking block 51 is movably assembled in the locking channel 203, and the locking channel 203 is arranged at an angle to the motion channel 202. Preferably, the locking channel 203 is arranged perpendicular to the motion channel 202.

[0073] In this embodiment, the cylinder body 2 is specially provided with a locking channel 203, which is communicated with the motion channel 202, so that the locking block 51 can move in the locking channel 203. The locking channel 203 is designed to be perpendicular to the motion channel 202. Such a layout allows the locking block 51 to move in the vertical direction and interact with the variable volume mechanism 4. When the variable volume mechanism 4 needs to be locked or released, the locking block 51 can move in the locking channel 203 in a direction perpendicular to the motion channel 202 to achieve precise control of the variable volume mechanism 4, thereby adjusting the working volume of the variable volume cylinder.

[0074] In some embodiments, a driven inclined surface 5101 is provided on the side of the locking block 51 facing away from the movement channel 202 , and the driven inclined surface 5101 is used to convert the force acting on the locking block 51 into movement along the locking channel 203 .

[0075] In this embodiment, the function of the passive inclined surface 5101 is to convert the force acting on the locking block 51 into a linear motion along the locking channel 203. With this design, when the driving member 531 applies force to the locking block 51 through the transmission member 532, the passive inclined surface 5101 can effectively convert this force into the power for the locking block 51 to move along the locking channel 203, thereby achieving the locking or release of the variable volume mechanism 4. This conversion mechanism not only improves the efficiency of force transmission, but also ensures the accuracy and stability of the movement of the locking block 51.

[0076] The angle of the driven inclined surface 5101 is preferably greater than or equal to 45°.

[0077] Please refer to Figure 4 , Figure 4 The cylinder body provided in the embodiment of the present application is Figure 1 Structural diagram from perspective.

[0078] like Figure 4 As shown, taking a cylinder body 2 as an example, it can be seen that in the structural diagram of the cylinder body 2 with the plane where the slide of the variable volume mechanism 4 is located as a cross-section, the locking channel 203 is located on one side of the compression chamber 201, because the slide is vertically cut into the compression chamber 201, which is equivalent to Figure 4 The locking channel 203 is designed to be perpendicular to the moving channel 202, so the locking block 51 moves parallel to the compression chamber 201, which is equivalent to Figure 4 The front-to-back direction.

[0079] Please refer to Figure 5 and Figure 6 , Figure 5 The locking block and the variable capacity mechanism provided in the embodiment of the present application are Figure 2 Structural diagram from perspective, Figure 6 The locking block and the variable capacity mechanism provided in the embodiment of the present application are Figure 1 Structural diagram from perspective.

[0080] Optionally, the locking block 51 is a wedge-shaped block having an actuated inclined surface 5101 .

[0081] In some embodiments, a locking surface 5102 is provided on the side of the locking block 51 facing the movement channel 202, and a shock-reducing fillet 5103 is provided on the edge of the locking surface 5102, and the shock-reducing fillet 5103 is bent from the side of the locking block 51 facing the movement channel 202 to the side of the locking block 51 away from the movement channel 202.

[0082] In this embodiment, the locking surface 5102 is used to contact and lock the variable volume mechanism 4. In order to improve the smoothness and reduce the impact when the locking block 51 contacts the variable volume mechanism 4, the edge of the locking surface 5102 is specially designed with a shock-reducing fillet 5103. This shock-reducing fillet 5103 starts from the side of the locking block 51 facing the motion channel 202 and bends toward the side away from the motion channel 202 to form a smooth transition area. Such a design not only helps to reduce the impact and wear that may occur during the locking process, but also ensures that the variable volume mechanism 4 can be stably locked in the set position when the variable volume cylinder is working.

[0083] In a specific embodiment, the driving member 531 is specially designed to output rotational power. The transmission member 532 connected thereto is composed of a series of precisely matched parts: it includes a lead screw directly connected to the output end of the driving member 531, a slidable sliding member is sleeved along the lead screw, and the sliding member is then connected to a push rod. The function of the sliding member is to convert the rotational power transmitted by the lead screw into linear motion, thereby driving the push rod to apply the required actuating force to the locking block 51.

[0084] As an option, the sliding member is a nut.

[0085] The design of converting rotary power into linear motion, combined with the use of a lead screw, brings many benefits to the variable volume cylinder. First, this conversion mechanism allows for precise control of the position of the locking block 51, which is essential for accurately locking and releasing the variable volume mechanism 4. Secondly, the use of the lead screw provides an efficient way of force transmission, which can directly and efficiently convert the rotary power generated by the drive member 531 into the linear motion of the push rod, ensuring the efficiency of force transmission and the accuracy of the movement of the locking block 51. In addition, the lead screw transmission system itself has a self-locking characteristic, and when there is no external power, it can maintain the stability of the locking block 51 in the current position, which not only enhances the safety of the system, but also avoids accidental unlocking due to loss of power in the system, ensuring the reliability of the variable volume cylinder under various working conditions.

[0086] In some embodiments, a conical surface is set at the end of the push rod facing the locking block 51, and the driving member 531 is rotated to drive the screw to rotate. The nut on the screw drives the push rod to have a small axial displacement. The conical surface of the push rod pushes the locking block 51 to overcome the force of the preset force component 52 so that the locking block 51 enters the motion channel 202 and clamps the variable volume mechanism 4. The cylinder body 2 idles without compression, thereby realizing variable volume.

[0087] As an option, the locking block 51 and the push rod are made of materials with high wear resistance and hardness, such as high-speed steel, nitrided stainless steel, etc. The push rod head is provided with rounded corners to increase strength.

[0088] Optionally, the driving member 531 is an electromagnetic expansion valve.

[0089] It should be noted that the main function of the electromagnetic expansion valve in a conventional refrigeration system is to control the flow rate and adjust the pressure of the refrigerant, and to match the needs between the evaporator and the condenser by automatically adjusting the valve opening; in this solution, the electromagnetic expansion valve serves as a driving member 531, and its function is converted into output rotational power. By connecting with the transmission member 532, the rotational motion is converted into linear motion, and then force is applied to the locking block 51.

[0090] In this embodiment, an electromagnetic expansion valve is used as a driving member 531, which provides the advantages of fast response and efficient control in the variable volume cylinder. The electromagnetic expansion valve can quickly respond to electronic signals to achieve precise adjustment of the position of the locking block 51, thereby quickly locking or releasing the variable volume mechanism 4. This design not only makes the control of the variable volume cylinder easier, but also the energy-saving characteristics of the electromagnetic expansion valve help to reduce energy consumption and improve overall energy efficiency. At the same time, the compact size of the electromagnetic expansion valve is conducive to the compact design of the variable volume cylinder, and its high reliability ensures long-term stable operation. In addition, the electromagnetic expansion valve can maintain the current state after power failure, providing a function similar to self-locking and enhancing the safety of the system. This design choice has significantly improved the automation, energy saving, maintenance cost and adaptability of the variable volume cylinder.

[0091] Optionally, an electromagnetic expansion valve interface is provided on the housing 1 , and the electromagnetic expansion valve is assembled on the electromagnetic expansion valve interface outside the housing 1 , so that the push rod passes through the mounting groove 205 to reach the locking block 51 , and the electromagnetic expansion valve is welded and fixed.

[0092] Please continue to refer to Figure 1 In some embodiments, each cylinder body 2 is configured with multiple sets of locking mechanisms 5, the multiple sets of locking mechanisms 5 are distributed along the axial direction of the cylinder body 2, and the multiple locking blocks 51 of the multiple sets of locking mechanisms 5 are distributed on the same side of the variable volume mechanism 4.

[0093] In this embodiment, in order to enhance the variable capacity and control accuracy of the variable volume cylinder, each cylinder body 2 is equipped with multiple sets of locking mechanisms 5. These locking mechanisms 5 are arranged along the axial direction of the variable volume cylinder, ensuring that the variable volume cylinder can achieve uniform and effective volume control at different positions. Multiple locking blocks 51 are distributed on the same side of the variable volume mechanism 4. Such a design allows multi-point locking of the variable volume mechanism 4, thereby improving the stability and reliability of the variable volume process of the variable volume cylinder. In this way, the variable volume cylinder can flexibly adjust the working volume of the variable volume cylinder according to changes in refrigeration demand, thereby optimizing overall performance and energy efficiency. In addition, the multi-point locking design also helps to reduce the pressure on a single locking block 51, prolong the service life of the locking mechanism 5, and enhance the durability and convenience of maintenance of the variable volume cylinder.

[0094] Please continue to refer to Figure 1 In some embodiments, the variable displacement cylinder includes two cylinder bodies 2, which are arranged along the axis of the variable displacement cylinder. Each cylinder body 2 is equipped with two sets of locking mechanisms 5, so that there are four sets of locking mechanisms 5 in the entire variable displacement cylinder.

[0095] Specifically, the present application provides a dual-cylinder variable-capacity cylinder.

[0096] In this embodiment, the double-cylinder variable-volume cylinder allows variable-volume control in the axial direction. Each locking mechanism 5 is composed of a preset force component 52 and a working force component 53. Through precise control, the variable-volume mechanism 4 in each cylinder body 2 can be locked or released respectively. Such a design not only improves the adaptability of the variable-volume cylinder to different refrigeration needs, but also enhances the stability and reliability of the system through multi-point locking. At the same time, the locking mechanism 5 distributed along the axial direction helps to evenly distribute the workload, reduce the stress of a single cylinder body 2, and extend the service life of the variable-volume cylinder; optimize the use of external space, achieve a more compact mechanical design, and save floor space; enhance overall stability, reduce vibration and noise during operation; each structure is compact, which is convenient for maintenance personnel to inspect and maintain the locking mechanism 5.

[0097] In a specific embodiment, the present application further provides a pump body, which includes a variable displacement cylinder. In addition, the pump body may also include a crankshaft for driving the piston 3 and a bearing supporting the crankshaft. When the pump body is working, the variable displacement function of the pump body can also be realized through the variable displacement function of the variable displacement cylinder, which will not be described in detail in this embodiment.

[0098] In a specific embodiment, the present application further provides a compressor, the compressor comprising a pump body. In addition, the compressor further comprises a housing 1, and a motor installed in the housing 1 and used to drive a crankshaft. When the compressor is working, the variable capacity function of the variable capacity cylinder can also be realized, and this embodiment will not be repeated.

[0099] Among them, the locking mechanism 5 of the variable volume cylinder is installed on the shell 1, and the actuating force component 53 in the locking mechanism 5 is fixed to the outside of the shell 1, which has the advantage of easy maintenance; the preset force component 52 and the locking block 51 in the locking mechanism 5 are installed in the cylinder body 2 inside the shell 1.

[0100] In a specific embodiment, the present application further provides an air conditioner, the air conditioner includes a compressor. In addition, the air conditioner also includes a condenser and / or an evaporator. When the air conditioner is working, the variable capacity function of the compressor can also be realized through the variable capacity function of the variable capacity cylinder, and this embodiment will not be repeated.

[0101] It should be noted that many of the components mentioned in this application are universal standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or through conventional experimental methods.

[0102] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0103] The above is a detailed introduction to the variable displacement cylinder, pump body, compressor and air conditioner provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A variable volume cylinder, characterized in that: include: The cylinder body is provided with a compression chamber; A variable volume mechanism, movably disposed in the compression chamber; The locking mechanism can adjust the tightness of the variable capacity mechanism to control the movement state of the variable capacity mechanism.

2. The variable displacement cylinder according to claim 1, characterized in that: The cylinder body is provided with a movement channel for the variable volume mechanism to be movably assembled; the locking mechanism comprises: Locking block; A preset force component, the preset force component is connected to the locking block, and the preset force component is used to apply a preset force to the locking block so that the locking block is kept in a state of exiting the movement channel under the action of the preset force; A working force assembly is connected to the locking block, and the working force assembly is used to apply a working force to the locking block, so that the locking block overcomes the effect of the preset force assembly on applying the preset force to the locking block under the action of the working force.

3. The variable displacement cylinder according to claim 2, characterized in that: The presetting force assembly comprises a fixing member and an elastic member, wherein the fixing member is installed in the cylinder body, a first end of the elastic member is connected to the fixing member, and a second end of the elastic member is connected to the locking block.

4. The variable displacement cylinder according to claim 2, characterized in that: The actuating force assembly comprises a driving member and a transmission member, wherein the driving member is installed in the cylinder body, and the transmission member is installed on the driving member, and the driving member applies force to the locking block through the transmission member.

5. The variable displacement cylinder according to claim 2, characterized in that: The cylinder body is also provided with a locking channel communicated with the movement channel, the locking block is movably assembled in the locking channel, and the locking channel is arranged at an angle to the movement channel; a passive inclined surface is arranged on the side of the locking block away from the movement channel, and the passive inclined surface is used to convert the force acting on the locking block into movement along the locking channel.

6. The variable displacement cylinder according to any one of claims 2 to 5, characterized in that: Each cylinder body is configured with a plurality of sets of the locking mechanisms, the plurality of sets of the locking mechanisms are distributed along the axial direction of the cylinder body, and the plurality of locking blocks of the plurality of sets of the locking mechanisms are distributed on the same side of the variable capacity mechanism.

7. The variable displacement cylinder according to any one of claims 1 to 5, characterized in that: The variable displacement cylinder comprises two cylinder bodies, which are distributed along the axis direction of the variable displacement cylinder. Each cylinder body is equipped with two sets of locking mechanisms, and four sets of locking mechanisms are distributed along the axis direction of the variable displacement cylinder.

8. A pump body, characterized in that: The pump body comprises a variable displacement cylinder as claimed in any one of claims 1 to 7.

9. A compressor, characterized in that: The compressor comprises the pump body as claimed in claim 8.

10. An air conditioner, characterized in that: The air conditioner includes the compressor as claimed in claim 9.

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