Compressor and heat exchange system having the same

Abstract

The present application provides a compressor and a heat exchange system having the same, including a compression structure and a piezoelectric drive structure. The compression structure includes a compression chamber and a movable structure. The movable structure is movably disposed in the compression chamber, and the volume of the compression chamber can be changed during the movement of the movable structure to compress the gas in the compression chamber. The piezoelectric drive structure includes a piezoelectric vibrator, and the piezoelectric vibrator can deform, thereby driving the movable structure to move in a linear direction while rotating. According to the compressor of the present application, there are different driving forms.

Description

Technical Field

[0001] This application belongs to the technical field of compressors, and particularly relates to a compressor and a heat exchange system having the same. Background Art

[0002] At present, some compressors use the eccentric installation of a rotating structure inside a stator, so that the volume in a sealed chamber changes during the rotation of the rotating structure. An electric motor is often used for driving and is connected to components such as bearings to form a circulating circular motion. Inevitably, multiple mechanical connections are used, resulting in high energy consumption, an overly complex structure, and troublesome later maintenance; there are also some compressors in the prior art that use piezoelectric drive.

[0003] However, existing volumetric compressors with piezoelectric drive mostly have problems such as small drive displacement and insufficient driving force, resulting in low pressure in the chamber and thus low refrigeration efficiency. In related technologies, a piezoelectric stack is used to bond multiple piezoelectric ceramics as a drive source, and at the same time, the volume difference between a driving part and a driven part is used to amplify the deformation of the piezoelectric ceramics, but the motion form of the drive source is single.

[0004] Therefore, how to provide a compressor with different drive forms and a heat exchange system having the same has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] Therefore, the technical problem to be solved by this application is to provide a compressor and a heat exchange system having the same, which have different drive forms.

[0006] To solve the above problems, this application provides a compressor, including:

[0007] A compression structure, which includes a compression chamber movable structure. The movable structure is movably arranged in the compression chamber, and during the movement, the movable structure can change the volume of the compression chamber to compress the gas in the compression chamber;

[0008] And a piezoelectric drive structure, which includes a piezoelectric vibrator. The piezoelectric vibrator can deform, and thereby drive the movable structure to move linearly while rotating.

[0009] Further, the compressor includes a housing; the piezoelectric drive structure further includes a turntable. The piezoelectric vibrator is connected between the inner wall of the housing and the turntable, and the turntable is connected to the movable structure; the linear direction includes the axial direction of the turntable; when the piezoelectric vibrator deforms, it can drive the turntable to rotate and move axially while driving the movable structure to rotate and move axially.

[0010] Furthermore, the piezoelectric oscillator includes a main body which is in a strip structure. The first end of the strip structure is connected to the inner surface of the housing, and the second end of the strip structure is connected to the turntable. Moreover, there is an included angle between the extending direction of the strip structure and the cross-section of the turntable.

[0011] Furthermore, the number of piezoelectric oscillators is set to at least one. When the number of piezoelectric oscillators is set to more than two, the more than two piezoelectric oscillators are arranged in sequence circumferentially around the central axis of the turntable. And each piezoelectric oscillator includes a main body, and the extending directions of the respective main bodies are the same in the circumferential direction of the turntable.

[0012] Furthermore, the piezoelectric oscillator further includes a first connecting plate and a second connecting plate. The first connecting plate, the main body, and the second connecting plate are connected in sequence. The first connecting plate is attached to and connected with the inner surface of the housing, and the second connecting plate is attached to and connected with the surface of the turntable.

[0013] Furthermore, the main body includes a substrate on which piezoelectric ceramics are provided. The piezoelectric drive structure includes a frequency modulation controller. The piezoelectric ceramics are electrically connected to the live wire end of the frequency modulation controller, and the substrate is electrically connected to the neutral wire end of the frequency modulation controller.

[0014] Furthermore, the compressor includes a rotating shaft which is connected to the turntable, and the movable structure is arranged on the rotating shaft. When the turntable rotates and moves axially, it drives the rotating shaft to rotate and move axially, and further drives the movable structure to rotate and move axially.

[0015] Furthermore, the compression chamber further includes a first compression chamber which has an opening, and a first partition part is arranged in the first compression chamber. The movable structure includes a rotating structure which covers the opening, and the rotating structure is rotationally and sealingly connected to the first compression chamber. A second partition part is arranged on the rotating structure and is located in the first compression chamber. The first partition part and the second partition part divide the first compression chamber into at least two chambers. When the rotating structure rotates, it can drive the second partition part to move, thereby changing the volume sizes of the two chambers.

[0016] And / or, the compression chamber further includes a second compression chamber. The movable structure includes a piston structure which is arranged in the second compression chamber, and the piston structure is movably and sealingly connected to the second compression chamber. When the piezoelectric oscillator deforms, it can drive the piston structure to move in the second compression chamber to change the volume size of the second compression chamber.

[0017] Further, when the compression chamber further includes a first compression chamber, a first partition portion is disposed in the first compression chamber, and a second partition portion is disposed on the rotating structure, the first compression chamber is a cylindrical cavity; the first partition portion includes a first partition plate and a second partition plate; the second partition portion includes a third partition plate and a fourth partition plate; the first partition plate, the third partition plate, the second partition plate, and the fourth partition plate are sequentially arranged in the circumferential direction around the central axis of the first compression chamber; the first partition plate, the third partition plate, the second partition plate, and the fourth partition plate divide the compression chamber into a first chamber, a second chamber, a third chamber, and a fourth chamber; the first chamber, the second chamber, the third chamber, and the fourth chamber are sequentially arranged in the circumferential direction around the central axis of the first compression chamber; and the first chamber communicates with the third chamber, and the second chamber communicates with the fourth chamber.

[0018] Further, when the compression chamber further includes a first compression chamber, the compressor further includes a housing, the first compression chamber is formed inside the housing, and the compressor further includes an elastic structure, and the housing is disposed on the elastic structure.

[0019] According to another aspect of the present application, a heat exchange system is provided, including a compressor, and the compressor is the compressor described above.

[0020] The compressor provided by the present application and the heat exchange system having the same have different driving forms and can drive compressors with different moving forms, such as piston compressors, rotary compressors, or a combined compressor formed by combining the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the compressor according to the embodiment of the present application;

[0022] Figure 2 It is a schematic external structure diagram of the compressor according to the embodiment of the present application;

[0023] Figure 3 It is a schematic installation structure diagram of the compressor according to the embodiment of the present application;

[0024] Figure 4 It is a schematic structural diagram of the compressor according to the embodiment of the present application;

[0025] Figure 5 It is a schematic working principle diagram inside the first compression chamber according to the embodiment of the present application;

[0026] Figure 6 It is a schematic working principle diagram inside the second compression chamber according to the embodiment of the present application;

[0027] Figure 7 It is a schematic structural diagram of the compressor according to the embodiment of the present application;

[0028] Figure 8 It is a schematic structural diagram inside the first compression chamber according to the embodiment of the present application;

[0029] Figure 9 The structural schematic diagram of the rotating structure according to the embodiment of the present application;

[0030] Figure 10 The structural schematic diagram of the rotating structure according to the embodiment of the present application.

[0031] The reference signs are shown as:

[0032] 1, piezoelectric vibrator; 11, main body; 12, first connecting plate; 13, second connecting plate; 14, piezoelectric ceramic; 2, movable structure; 21, rotating structure; 211, first partition; 212, second partition; 22, piston structure; 221, piston block; 222, piston sleeve; 31, first compression chamber; 311, first chamber; 312, second chamber; 313, third chamber; 314, fourth chamber; 32, second compression chamber; 4, turntable; 5, housing; 6, elastic structure; 71, one-way exhaust valve; 711, exhaust pipe; 72, one-way intake valve; 721, intake pipe; 73, air hole; 74, wire hole; 8, nut. Detailed implementation manners

[0033] Referring to Figure 1-10 As shown, a compressor includes a compression structure and a piezoelectric driving structure. The compression structure includes a compression chamber and a movable structure 2. The movable structure 2 is movably disposed in the compression chamber, and the volume of the compression chamber can be changed during the movement of the movable structure 2 to compress the gas in the compression chamber. The piezoelectric driving structure includes a piezoelectric vibrator 1. The piezoelectric vibrator 1 can deform, and then drive the movable structure 2 to move linearly while rotating. In the working state, the piezoelectric driving structure adopted in the present application can simultaneously include torsional motions in the vertical direction and the torsional direction. Taking the two different motion forms as the driving sources, the present application has different driving forms, so the present application can simultaneously drive a piston compressor and / or a rotary vane compressor and / or a scroll compressor, etc. That is, the rotational motion of the movable structure 2 can drive the rotating and movable compression structure, such as a rotor compressor or a scroll compressor, etc.; the movable structure 2 moves linearly, which can drive the compression structure that moves linearly, such as a piston compression mechanism. That is, the present application can form a compound piezoelectric compressor, a compound compressor with multiple compressors, such as the characteristics of a piston type and a rotary vane compressor; such as a piston compressor and a scroll compressor, etc. And in the present application, directly using piezoelectric drive can directly convert electrical energy into mechanical energy, improving the energy conversion rate. The above-mentioned vertical direction refers to the axial direction of the rotation direction; the torsional direction refers to the rotation direction.

[0034] Referring to Figure 1As shown, the present application also discloses some embodiments. The compressor includes a housing 5; the piezoelectric drive structure further includes a turntable 4. The piezoelectric vibrator 1 is connected between the inner wall of the housing 5 and the turntable 4, and the turntable 4 is connected to the movable structure 2; the linear direction includes the axial direction of the turntable 4. When the piezoelectric vibrator 1 deforms, it can drive the turntable 4 to rotate and move axially of the turntable 4, thereby driving the movable structure 2 to rotate and move axially of the turntable 4. In the present application, the bending deformation of the piezoelectric vibrator 1 drives the turntable 4 to generate motions in two directions, vertical and torsional. When the piezoelectric vibrator 1 bends and deforms, due to the bending, the distance between the turntable 4 and the inner wall of the housing 5 changes, so it can drive the turntable 4 to generate a motion in the vertical direction (linear direction). At the same time, due to the bending of the piezoelectric vibrator 1, the turntable 4 is driven to rotate circumferentially. The present application can have two movable structures 2 at the same time. One is a compressor with a rotating vane structure, and the other is a piston compressor with a linear movement; among them, the torsional motion serves as the driving source of the rotating vane structure, and the vertical motion serves as the driving source of the piston structure 22. The two working areas can work simultaneously, greatly increasing the compression efficiency.

[0035] Refer to in combination Figure 1 As shown, structures such as the turntable 4, the piezoelectric vibrator 1, and the movable structure 2 are all arranged inside the housing 5. When the present application forms at least one of a compressor with a rotating vane structure and a piston compressor, each component is located inside the housing 5. Refer to in combination Figure 2 As shown, the present application also has a one-way exhaust valve 71, an exhaust pipe 711, a one-way intake valve 72, an intake pipe 721, a gas hole 73, and a wire hole 74.

[0036] The present application also discloses some embodiments. The piezoelectric vibrator 1 includes a main body 11. The main body 11 is a strip-shaped structure. The first end of the strip-shaped structure is connected to the inner surface of the housing 5, and the second end of the strip-shaped structure is connected to the turntable 4; and there is an included angle between the extending direction of the strip-shaped structure and the cross-section of the turntable 4. And because there is an included angle between the extending direction of the strip-shaped structure and the cross-section of the turntable 4, the deformation of the piezoelectric ceramic 14 can be amplified using the lever principle to make the piezoelectric vibrator 1 with a large driving force. Refer to in combination Figure 3As shown, when the present application simultaneously has a piston-type and a rotary vane-type compression structure, on the left side of this drawing is an exploded view of a first compression chamber 31 and a second compression chamber 32; a rotating structure 21 covers the opening of the first compression chamber 31 to form a sealed chamber; a piston block 221 is movably and sealingly arranged within a piston sleeve 222 to form a sealed chamber as the second compression chamber 32; in the middle of this drawing is a linkage mechanism, namely a piezoelectric vibrator 1, which includes a main body 11, a first connecting plate 12, and a second connecting plate 13; and a piezoelectric ceramic 14 attached to the main body; a turntable 4, an exhaust pipe 711, an intake pipe 721; a spring 6, a one-way exhaust valve 71, and a one-way intake valve 72, as well as a fixing structure nut 8; on the right side of this drawing is a housing 5, which includes a top plate, a main board, and a bottom plate connected in sequence.

[0037] The present application further includes a Z-type piezoelectric vibrator 1, a rotating disk 4, bolts, a nut 8, wires, and a piezoelectric frequency modulation controller.

[0038] The present application also discloses some embodiments. The number of piezoelectric vibrators 1 is set to at least one; when the number of piezoelectric vibrators 1 is set to more than two, more than two piezoelectric vibrators 1 are arranged in sequence circumferentially around the central axis of the turntable 4; and each piezoelectric vibrator 1 includes a main body 11, and the extending directions of the respective main bodies 11 in the circumferential direction of the turntable 4 are the same. The fact that the extending directions of the respective main bodies 11 in the circumferential direction of the turntable 4 are the same means that the included angle between the respective main bodies 11, which are strip-shaped structures, and the cross-section of the turntable 4 is the same. That is, the bending directions of each piezoelectric vibrator 1 are the same, and can drive the turntable 4 to perform a circumferential rotational movement in a specific direction, such as counterclockwise or clockwise. In the present application, the main body 11, which is a strip-shaped structure, has an angle with the central axis of the turntable 4 in the vertical direction, and the main body 11 extends in the circumferential direction, and the extending direction in the circumferential direction corresponds to the position. Referring to the combination Figure 4 As shown, in the present application, the first end of the piezoelectric vibrator 1 is connected to the inner surface of the housing 5, and the second end is connected to the turntable 4; a rotating shaft is connected to the turntable 4, and when the turntable 4 rotates, it can drive the rotating shaft to rotate; when the rotating shaft rotates, it can drive the rotating structure 21 to rotate, thereby compressing the gas in the first compression chamber 31, that is, the first compression chamber 31 and the rotating structure 21 together form a rotary compression structure; at the same time, a piston block 221 is connected below the entire first compression chamber; the piston block 221 extends into the piston sleeve 222 to move linearly, forming a piston compression structure.

[0039] The present application also discloses some embodiments. The piezoelectric vibrator 1 further includes a first connecting plate 12 and a second connecting plate 13; the first connecting plate 12, the main body 11, and the second connecting plate 13 are connected in sequence; the first connecting plate 12 is attached to and connected to the inner surface of the housing 5, and the second connecting plate 13 is attached to and connected to the surface of the turntable 4. The first connecting plate 12, the main body 11, and the second connecting plate 13 are connected in sequence to form a Z-shaped metal substrate; referring to the combination Figure 7As shown, the piezoelectric vibrator 1 of the present application uses a Z-shaped metal substrate. Selecting the Z-shaped metal substrate as the substrate of the piezoelectric vibrator 1 simplifies the overall structure. At the same time, using the Z-shaped metal substrate facilitates adjusting the tilt angle of the piezoelectric vibrator 1, thereby adjusting the rotation direction of the driving turntable 4. Each Z-shaped piezoelectric vibrator 1 is evenly distributed along one direction, and two different motion forms, vertical and torsional, can be achieved simultaneously. In addition, the shape of the piezoelectric vibrator 1 is not limited to the Z shape, and it can also be designed as a quadrilateral or a rhombus. When using other shapes, the assembly between the piezoelectric vibrator 1 and the turntable should be adjusted adaptively, and at the same time, the driving capabilities of piezoelectric vibrators 1 with different shapes should also be considered. The number of piezoelectric vibrators 1 is not limited to 4 groups. The more the number, the stronger the driving ability. The piezoelectric vibrator 1 is a piezoelectric bimorph. The present application uses the Z-shaped piezoelectric vibrator 1 as the driving source. The piezoelectric ceramic 14 deforms under the action of an alternating current to drive the turntable 4 to move, so as to drive the movable structure 2 to move, and thus play a compression role.

[0040] The present application also discloses some embodiments. The main body 11 includes a substrate, and a piezoelectric ceramic 14 is arranged on the substrate; the piezoelectric drive structure includes a frequency modulation controller. The piezoelectric ceramic 14 is electrically connected to the live wire end of the frequency modulation controller, and the substrate is electrically connected to the neutral wire end of the frequency modulation controller. Using the piezoelectric ceramic 14 for driving can directly convert electrical energy into mechanical energy, simplify the intermediate energy conversion process, and improve the energy utilization rate. Traditional compressors driven by motors and electromagnetic drives have high energy consumption, high noise, complex structures, and troublesome equipment maintenance. The present application uses the piezoelectric ceramic 14 for driving, which reduces energy consumption and noise while having a simple structure and being easy to maintain.

[0041] The present application also discloses some embodiments. The compressor includes a rotating shaft, the rotating shaft is connected to the turntable 4, and the movable structure 2 is arranged on the rotating shaft; when the turntable 4 rotates and moves axially on the turntable 4, it drives the rotating shaft to move axially on the turntable 4 while rotating, and further drives the movable structure 2 to move axially on the turntable 4 while rotating. Then the movable structure 2 can be used for a piston compressor or a rotary compressor.

[0042] Combined with reference to Figure 7 As shown, the present application further includes a Z-shaped piezoelectric vibrator 1, a rotating disk 4, bolts, nuts 8, wires, and a piezoelectric frequency modulation controller. Each Z-shaped piezoelectric vibrator 1 is bonded by a substrate and 2 piezoelectric ceramics 14. Wires are welded on the outer surface of each piezoelectric ceramic 14, and wires are also welded on the Z-shaped substrate. The wires led out from the piezoelectric ceramic 14 are connected to the live wire end of the frequency modulation controller, and the wires led out from the Z-shaped substrate are connected to the neutral wire end of the digital frequency modulation controller. The Z-shaped piezoelectric vibrator 1 is connected to the turntable and the rotating disk 4 in a fastening form such as bolts or screws to achieve the transmission of driving force and driving displacement.

[0043] Combined with reference to Figure 10As shown, the present application also discloses some embodiments. The compression chamber further includes a first compression chamber 31. The first compression chamber 31 has an opening, and a first partition portion 211 is disposed inside the first compression chamber 31; the movable structure 2 includes a rotating structure 21. The rotating structure 21 covers the opening, and the rotating structure 21 is rotationally and sealingly connected to the first compression chamber 31; a second partition portion 212 is disposed on the rotating structure 21, and the second partition portion 212 is located inside the first compression chamber 31; the first partition portion 211 and the second partition portion 212 divide the inside of the first compression chamber 31 into at least two chambers; when the rotating structure 21 rotates, it can drive the second partition portion 212 to move, thereby changing the volume sizes of the two chambers.

[0044] Referring to Figure 4 As shown, the present application also discloses some embodiments. The compression chamber further includes a second compression chamber 32; the movable structure 2 includes a piston structure 22. The piston structure 22 is disposed inside the second compression chamber 32, and the piston structure 22 is movably and sealingly connected to the second compression chamber 32; when the piezoelectric vibrator 1 deforms, it can drive the piston structure 22 to move inside the second compression chamber 32 to change the volume size of the second compression chamber 32. The turntable 4 makes a reciprocating motion in the vertical direction, causing the first compression chamber 31 to make a synchronous reciprocating motion. A piston structure 22 is disposed at the bottom of the first compression chamber 31. Referring to Figure 6 As shown, when the first compression chamber 31 moves downward, in the first quarter cycle, the piston structure 22 moves downward from the initial position to the first position inside the second compression chamber 32, causing the pressure inside the second compression chamber 32 to increase, and the refrigerant flows out from the exhaust valve. In the next half cycle, the piston structure 22 moves upward to the second position, the pressure inside the chamber decreases, and the refrigerant flows in from the suction valve. In the last quarter cycle, the piston structure 22 moves downward to reach the initial position, the pressure inside the chamber increases, and the refrigerant flows out from the exhaust valve. The piston structure 22 is a piston block 221. A piston sleeve 222 is disposed at the bottom of the housing 5, and the inside of the piston sleeve 222 forms the second compression chamber 32.

[0045] The upper end of the Z-shaped piezoelectric vibrator 1 is connected to the inner wall of the housing, and the lower end is connected to the turntable 4. The Z-shaped piezoelectric vibrator 1 is inclined at an angle with respect to the turntable 4. The Z-shaped piezoelectric vibrator 1 generates periodic deformation under the excitation of an alternating voltage. Four (more than three are also possible) Z-shaped piezoelectric vibrators 1 bend simultaneously in one direction, causing the turntable 4 to simultaneously generate reciprocating motions in the vertical and circumferential directions. In the first half cycle of the alternating voltage, the turntable moves downward and simultaneously generates a counterclockwise torsional motion. In the second half cycle, the turntable moves upward and simultaneously generates a clockwise torsional motion.

[0046] Referring to Figure 8As shown, the present application also discloses some embodiments. When the compression chamber further includes a first compression chamber 31, a first partition portion 211 is provided in the first compression chamber 31, and a second partition portion 212 is provided on the rotating structure 21, the first compression chamber 31 is a cylindrical cavity; the first partition portion 211 includes a first partition plate and a second partition plate; the second partition portion 212 includes a third partition plate and a fourth partition plate; the first partition plate, the third partition plate, the second partition plate, and the fourth partition plate are arranged in sequence in the circumferential direction around the central axis of the first compression chamber 31; the first partition plate, the third partition plate, the second partition plate, and the fourth partition plate divide the compression chamber into a first chamber 311, a second chamber 312, a third chamber 313, and a fourth chamber 314; the first chamber 311, the second chamber 312, the third chamber 313, and the fourth chamber 314 are arranged in sequence in the circumferential direction around the central axis of the first compression chamber 31; and the first chamber 311 communicates with the third chamber 313, and the second chamber 312 communicates with the fourth chamber 314. Referring to Figure 8 As shown, the first partition plate and the second partition plate are on the same straight line (for example, in the radial direction of a compression chamber with a circular cross-section). Referring to Figure 9 As shown, the third partition plate and the fourth partition plate are arranged on the rotating structure 21 on the same straight line (for example, in the radial direction of a compression chamber with a circular cross-section). Referring to Figure 10 As shown, the second partition portion 212 is provided on the inner surface of the rotating structure 21 facing the first compression chamber 31. The rotating structure 21 is a circular plate.

[0047] In the first compression chamber 31 of the present application, the first partition portion 211 and the second partition portion 212 can also be removed, that is, the first compression chamber 31 cannot perform compression. Here, the first compression chamber 31 and the rotating structure 21 as a whole move axially, only for power transmission, and no longer compress gas or refrigerant. Then, the piezoelectric compressor of the present application is a piston-type piezoelectric compressor. The entire first compression chamber 31 can also be removed.

[0048] The piston structure 22 and the second compression chamber 32 in the compound piezoelectric compressor of the present application can also be removed, and the first compression chamber 31, the rotating structure 21, and the spring structure are retained. Then, the piezoelectric compressor of the present application becomes a new type of rotary vane piezoelectric compressor.

[0049] In the present application, the movable structure 2 of the rotary vane type is matched with the stator through the rotating structure 21. The rotating structure 21 forms the rotating structure 21, and the stator is formed by a housing with an opening. The first compression chamber 31 is formed inside the housing. Referring to Figure 5As shown in the figure, the first compression chamber 31 is divided into four independent sealed cavities by two first partition parts 211 and two second partition parts 212. There are two through holes provided at the center of the rotating structure 21, so that the first chamber 311 and the third chamber 313 are connected, and the pressures inside them are the same; the second chamber 312 and the fourth chamber 314 are connected, and the pressures inside them are the same. A spring is provided at the bottom of the first compression chamber 31, that is, the bottom outside the housing, and the spring is in a compressed state. When an alternating voltage is applied to the piezoelectric vibrator 1, within the first quarter cycle, the rotating structure 21 rotates clockwise to reach position 1. At this time, the pressures in the first chamber 311 and the third chamber 313 increase, and the refrigerant flows out from the one-way exhaust valve. And the pressures in the second chamber 312 and the fourth chamber 314 decrease, and the refrigerant flows in from the one-way intake valve 72. The downward movement of the turntable causes the rotating structure 21 and the first compression chamber 31 to move downward simultaneously, and the compression amount of the spring increases; within the second quarter cycle, the rotating structure 21 returns to the initial position. At this time, the pressures in the second chamber 312 and the fourth chamber 314 increase, and the refrigerant flows out from the one-way exhaust valve. And the pressures in the first chamber 311 and the third chamber 313 decrease, and the refrigerant flows in from the one-way intake valve 72; within the third quarter cycle, the rotating structure 21 reaches position 2. At this time, the pressures in the second chamber 312 and the fourth chamber 314 increase, and the refrigerant flows out from the one-way exhaust valve. And the pressures in the first chamber 311 and the third chamber 313 decrease, and the refrigerant flows in from the one-way intake valve 72. The compression amount of the spring decreases, so that the stator and the rotating structure 21 can still be closely matched to ensure the sealing performance; within the fourth quarter cycle, the rotating structure 21 returns to the initial position. At this time, the pressures in the first chamber 311 and the third chamber 313 increase, and the refrigerant flows out from the one-way exhaust valve. And the pressures in the second chamber 312 and the fourth chamber 314 decrease, and the refrigerant flows in from the one-way intake valve 72; the spring at the bottom of the stator is in a compressed state throughout the entire cycle, which is used to achieve the close fit between the rotating structure 21 and the first compression chamber 31.

[0050] This application designs two types of compressors, namely rotary vane type and piston type. Fourteen piezoelectric ceramics are bonded to the Z-shaped metal substrate as the driving source. The deformation of the piezoelectric ceramics 14 is amplified by using the lever principle to make a piezoelectric vibrator 1 with a large driving force. At the same time, the deformation of the piezoelectric ceramics 14 is amplified again by using the resonance method to generate two motion modes, vertical and torsional. The vertical motion is used as the driving source of the piston type compressor, and the torsional motion is used as the driving source of the rotary vane type compressor, thus designing a compound piezoelectric compressor.

[0051] The present application also discloses some embodiments. When the compression chamber further includes a first compression chamber 31, the compressor further includes a housing. The first compression chamber 31 is formed inside the housing. The compressor further includes an elastic structure 6, and the housing is disposed on the elastic structure 6. The elastic structure 6 connects the inner wall of the housing 5 and the movable structure 2; the elastic structure 6 generates an elastic force in the axial direction of the turntable 4. The elastic structure 6 can be a spring, and the number of springs can be at least one group, and each group includes at least one spring. Using multiple groups of springs as the elastic structure, the multiple groups of springs jointly support the housing, which not only ensures that the piston can perform reciprocating motion, but also ensures the sealing between the housing and the rotating structure 21, that is, ensures the sealing of the first compression chamber 31. The housing generates an elastic force under the action of the elastic structure 6, so that the housing is sealed with the rotating structure 21. The multiple groups of springs 6 are arranged in sequence around the circumference of the turntable 4. At the same time, the resonance of the elastic system composed of the piezoelectric vibrator 1 structure and the elastic structure 6 amplifies the displacement, and the deformation of the piezoelectric vibrator 1 is amplified by resonance, solving the problem of insufficient driving displacement of the piezoelectric ceramic 14. The elastic structure 6 can also be an annular elastic member, such as a rubber ring, and the housing is placed on the rubber ring, and the rubber ring supports the entire housing.

[0052] The rotating structure 21 and the rotating shaft are integrated or are welded together. There is only contact between the rotating structure 21 and the first compression chamber 31, without connection. The frictional force generated between metals is very small, and the frictional force generated by the axial rotation of the rotating structure 21 is very small. The anti-torsion force of the elastic structure below the housing and the frictional force of the piston make the stator basically not twist. The elastic structure 6 not only plays a role in damping and supporting in the axial direction, but also plays an anti-torsion role in the circumferential direction. At the same time, the piston structure 22 also restricts the circumferential torsion of the stator. That is, the elastic structure 6 can limit the circumferential movement of the housing, so the housing can only move axially and cannot move circumferentially; and the piston structure 22 is arranged below the housing, and its movement is consistent with that of the housing, so it can also only move axially and cannot move circumferentially.

[0053] When the compression chamber further includes a first compression chamber 31 and a second compression chamber 32, the rotating structure 21 is disposed on the rotating shaft, and then the turntable 4 drives the rotating shaft to move, thereby driving the rotating structure 21 to move axially while rotating. And the housing, that is, the entire first compression chamber 31, moves downward under the action of the rotating structure 21 (because the elastic structure 6 restricts its circumferential movement, that is, the entire first compression chamber 31). At this time, the piston structure 22 is disposed below the housing, and the piston structure 22 can be fixedly connected to the housing. In this way, under the combined action of the piston structure 22 and the elastic structure 6, it can be ensured that the housing does not move circumferentially at all and only moves axially; and the housing can simultaneously play an axial guiding role for the piston structure 22.

[0054] According to an embodiment of the present application, a heat exchange system is provided, including a compressor, and the compressor is the above-mentioned compressor. The heat exchange system of the present application can be used in heat exchange products such as air conditioners or refrigerators, or other refrigeration products, but is not limited to these products.

[0055] It is easily understood by those skilled in the art that, on the premise of no conflict, the above-mentioned advantageous ways can be freely combined and superimposed.

[0056] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included within the protection scope of the present application. The above is only the preferred implementation manner of the present application. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present application, several improvements and variations can still be made, and these improvements and variations should also be regarded as within the protection scope of the present application.

Claims

1. A compressor, characterized in that, Comprising: A compression structure, the compression structure including a compression chamber and a movable structure, the movable structure being movably disposed in the compression chamber, and the movable structure being capable of changing the volume of the compression chamber during movement to compress the gas in the compression chamber; And a piezoelectric drive structure, the piezoelectric drive structure including a piezoelectric vibrator (1), the piezoelectric vibrator (1) being capable of deforming, and thereby driving the movable structure to move in a linear direction while rotating.

2. The compressor according to claim 1, characterized in that, The compressor includes a housing (5); the piezoelectric drive structure further includes a turntable (4), the piezoelectric vibrator (1) being connected between the inner wall of the housing (5) and the turntable (4), the turntable (4) being connected to the movable structure; the linear direction includes the axial direction of the turntable (4); when the piezoelectric vibrator (1) deforms, it can drive the turntable (4) to rotate while moving in the axial direction of the turntable (4), and thereby drive the movable structure to rotate while moving in the axial direction of the turntable (4).

3. The compressor according to claim 2, wherein, The piezoelectric vibrator (1) includes a main body (11), the main body (11) being a strip structure, a first end of the strip structure being connected to the inner surface of the housing (5), and a second end of the strip structure being connected to the turntable (4); and there is an included angle between the extending direction of the strip structure and the cross-section of the turntable (4).

4. The compressor according to claim 3, characterized in that, The number of the piezoelectric vibrators (1) is set to at least one; when the number of the piezoelectric vibrators (1) is set to more than two, two or more of the piezoelectric vibrators (1) are arranged in sequence in the circumferential direction around the central axis of the turntable (4); and each of the piezoelectric vibrators (1) includes one main body (11), and the extending directions of the respective main bodies in the circumferential direction of the turntable (4) are the same.

5. The compressor according to claim 3, characterized in that, The piezoelectric vibrator (1) further includes a first connecting plate (12) and a second connecting plate (13); the first connecting plate (12), the main body (11), and the second connecting plate (13) are connected in sequence; the first connecting plate (12) is attached to and connected to the inner surface of the housing (5), and the second connecting plate (13) is attached to and connected to the surface of the turntable (4).

6. The compressor according to claim 3, characterized in that, The main body (11) includes a substrate, and a piezoelectric ceramic (14) is provided on the substrate; the piezoelectric drive structure includes a frequency modulation controller, the piezoelectric ceramic (14) is electrically connected to the live wire end of the frequency modulation controller, and the substrate is electrically connected to the neutral wire end of the frequency modulation controller.

7. The compressor according to claim 2, wherein, The compressor includes a rotating shaft, the rotating shaft being connected to the turntable (4), and the movable structure being disposed on the rotating shaft; when the turntable (4) rotates while moving in the axial direction of the turntable (4), it drives the rotating shaft to rotate while moving in the axial direction of the turntable (4), and thereby drives the movable structure to rotate while moving in the axial direction of the turntable (4).

8. The compressor according to claim 1, characterized in that, The compression chamber further includes a first compression chamber (31), the first compression chamber (31) has an opening, and a first partition portion (211) is disposed in the first compression chamber (31); the movable structure includes a rotating structure (21), the rotating structure (21) covers the opening, and the rotating structure (21) is rotatably and sealingly connected to the first compression chamber (31); a second partition portion (212) is disposed on the rotating structure (21), and the second partition portion (212) is located in the first compression chamber (31); the first partition portion (211) and the second partition portion (212) divide the inside of the first compression chamber (31) into at least two chambers; when the rotating structure (21) rotates, it can drive the second partition portion (212) to move, thereby changing the volume sizes of the two chambers; And / or, the compression chamber further includes a second compression chamber (32); the movable structure includes a piston structure (22), the piston structure (22) is disposed in the second compression chamber (32), and the piston structure (22) is movably and sealingly connected to the second compression chamber (32); when the piezoelectric vibrator (1) deforms, it can drive the piston structure (22) to move in the second compression chamber (32) to change the volume size of the second compression chamber (32).

9. The compressor according to claim 8, characterized in that, When the compression chamber further includes a first compression chamber (31), a first partition portion (211) is disposed in the first compression chamber (31), and a second partition portion (212) is disposed on the rotating structure (21), the first compression chamber (31) is a cylindrical cavity; the first partition portion (211) includes a first partition board and a second partition board; the second partition portion (212) includes a third partition board and a fourth partition board; the first partition board, the third partition board, the second partition board, and the fourth partition board are sequentially arranged in the circumferential direction around the central axis of the first compression chamber (31); the first partition board, the third partition board, the second partition board, and the fourth partition board divide the compression chamber into a first chamber (311), a second chamber (312), a third chamber (313), and a fourth chamber (314); the first chamber (311), the second chamber (312), the third chamber (313), and the fourth chamber (314) are sequentially arranged in the circumferential direction around the central axis of the first compression chamber (31); and the first chamber (311) communicates with the third chamber (313), and the second chamber (312) communicates with the fourth chamber (314).

10. The compressor according to claim 8, characterized in that, When the compression chamber further includes a first compression chamber (31), the compressor further includes a housing, the inside of the housing forms the first compression chamber (31), and the compressor further includes an elastic structure (6), and the housing is disposed on the elastic structure (6).

11. A heat exchange system, comprising a compressor, characterized in that, The compressor is the compressor according to any one of claims 1-10.

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