Rotary compressor and electric appliance with same

Abstract

The invention relates to the technical field of compressors, in particular to a rotary compressor and an electric appliance with the rotary compressor, and the rotary compressor comprises a shell, a compression mechanism and a motor; an accommodating cavity is formed in the shell; the compression mechanism is arranged in the containing cavity and comprises a crankshaft and an air cylinder, the crankshaft is provided with an eccentric section, and the air cylinder is arranged on the eccentric section of the crankshaft in a sleeving mode and fixed to the shell; the motor is arranged in the containing cavity and comprises a stator and a rotor, the stator is arranged on the outer side of the air cylinder in a sleeving mode and fixed to the air cylinder, and the rotor is rotationally arranged on the outer side of the stator in a sleeving mode and fixed to the crankshaft. According to the rotary compressor, the assembly mode that the rotor, the stator and the air cylinder are sequentially nested is adopted, so that the height of the rotary compressor can be made to be lower, the rotary compressor is not limited by the height of up-down assembly of the motor and the compression mechanism, and the application requirements of miniaturization and light weight of the miniature rotary compressor are met more easily.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, in particular to a rotary compressor and an electrical appliance having the same. Background Art

[0002] Rotary compressors are widely used in the cooling and heating industries due to their simple structure, low cost, and high reliability. For example, they are widely used in air conditioners, water heaters, and refrigeration equipment. As these applications expand, users are increasingly demanding portable compressors. Portability requires high volume and weight, and miniature compressors are often required.

[0003] In the process of implementing this application, the inventors discovered that the prior art has at least the following problems: The main structural form of existing rotary compressors is the inner rotor type and the upper and lower structure. The height of the compressor is limited by the height of the motor and the structure of the pump body, resulting in its overall height being relatively high and heavy, which makes it difficult to meet the current demand for miniaturization and lightweighting of micro compressors. Summary of the Invention

[0004] The present application provides a rotary compressor and an electrical appliance having the same, which is conducive to reducing the height of the rotary compressor to meet the current demand for miniaturization and lightweighting of micro compressors.

[0005] In a first aspect, the present application provides a rotary compressor, comprising: a housing, wherein a receiving cavity is provided; A compression mechanism is disposed in the accommodating chamber, the compression mechanism comprising a crankshaft and a cylinder, the crankshaft having an eccentric section, the cylinder sleeve being disposed on the eccentric section of the crankshaft and fixed to the housing; A motor is arranged in the accommodating cavity, and the motor includes a stator and a rotor. The stator is sleeved on the outside of the cylinder and fixed to the cylinder, and the rotor is rotatably sleeved on the outside of the stator and fixed to the crankshaft.

[0006] In some embodiments, the shell is provided with an air intake and an air exhaust, the accommodating chamber includes a first chamber and a second chamber, the motor is provided in the first chamber, the lubricating oil of the rotary compressor is injected into the second chamber, the compression mechanism is provided with a compression chamber, the compression chamber has an openable and closable air intake and air outlet, the air intake is connected to the air intake through the first chamber, and the air outlet is connected to the air exhaust through the second chamber.

[0007] In some embodiments, the compression mechanism further includes a first bearing and a second bearing, along the axial direction of the crankshaft: the first bearing, the cylinder, and the second bearing are sequentially sleeved on the crankshaft, the compression chamber is enclosed by the crankshaft, the cylinder, the first bearing, and the second bearing, and the first bearing, the cylinder, and the second bearing are sequentially connected and fixed to the housing; A bracket is provided on the inner wall of the housing, the stator is placed on the bracket, the stator and the first bearing are fixed by a pressure plate, the pressure plate abuts against one end of the stator facing away from the bracket, and the pressure plate and the first bearing are fixed by bolts.

[0008] In some embodiments, the first bearing includes a first neck and a first shoulder, the first neck is sleeved on the crankshaft and located on the inner circumference of the stator, the first shoulder extends from the lower end of the first neck toward the stator to the upper end of the cylinder, and the cylinder, the first shoulder and the pressure plate are fixed in sequence by bolts.

[0009] In some embodiments, the bracket includes a ring platform and a first boss, the ring platform is provided on the inner wall of the shell and extends circumferentially around the crankshaft, the first boss is provided on the side of the ring platform facing the stator, and the side of the stator facing away from the pressure plate is abutted against the first boss, and a first through hole is opened on the side wall of the first boss, and the air inlet is connected to the first chamber through the first through hole.

[0010] In some embodiments, a second boss is provided on the side of the bracket facing away from the stator, a second through hole is opened on the side wall of the second boss, a muffler is provided in the second chamber, the muffler has a muffler cavity, and the air outlet, the muffler cavity, the second through hole and the exhaust port are connected in sequence.

[0011] In some embodiments, the shell is provided with a terminal socket corresponding to the bracket, the terminal socket is connected to the stator through a lead, and the side of the bracket facing the stator is provided with an avoidance groove for accommodating the lead, and the position of the avoidance groove corresponds to the position of the terminal socket.

[0012] In some embodiments, the cylinder is provided with a vane groove, a pressure equalizing hole is opened on the second bearing at a position corresponding to the vane groove, and the vane groove is connected to the muffler cavity through the pressure equalizing hole.

[0013] In some embodiments, the second bearing includes a second neck and a second shoulder, the second neck is sleeved on the crankshaft and is sealed to the housing via a sealing ring, the second shoulder extends outward from one end of the second neck close to the eccentric section along the radial direction of the crankshaft, the second shoulder is provided with a channel, the channel extends from the inner peripheral side of the second shoulder along its radial direction to the outer peripheral side of the second shoulder, the rotary compressor also includes an oil suction pipe, one end of the oil suction pipe is inserted into the second chamber, and the other end is inserted into the channel.

[0014] In some embodiments, the shell is made of at least one of aluminum and aluminum alloy.

[0015] The present application also provides an electrical appliance, which includes the rotary compressor described above. Compared with the existing technology, the technical solution provided by this application has at least the following technical effects: The rotary compressor of the present application adopts an outer rotor motor, in which the rotor is sleeved on the outside of the stator, and the stator is sleeved on the outside of the cylinder. This assembly method of nesting the rotor, stator and cylinder in sequence makes the height of the rotary compressor not restricted by the height of the upper and lower assemblies of the motor and the compression mechanism, greatly shortening its axial height and breaking through the minimum height of existing micro rotary compressors. Compared with existing rotary compressors, the height of the rotary compressor of the present application can be made lower and the volume can be made smaller, which can more easily meet the application requirements of miniaturization and lightweight of micro rotary compressors. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and examples.

[0017] Figure 1 This is a schematic structural diagram of a rotary compressor in one embodiment of the present application; Figure 2 for Figure 1 Schematic diagram of the circulation path of refrigerant and lubricating oil in the rotary compressor shown; Figure 3 for Figure 1 Schematic diagram of the structure of the main shell.

[0018] Reference numerals: DETAILED DESCRIPTION In order to better understand the technical solution of the present invention, the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0019] It should be understood that the embodiments described are only a portion of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0020] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "an", "the" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0021] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0022] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] The present application provides a rotary compressor 100 .

[0024] See also Figure 1 、 Figure 2 and Figure 3 In the embodiment of the present application, the rotary compressor 100 includes a shell 110, a compression mechanism 130 and a motor. The shell 110 is provided with an accommodating chamber; the compression mechanism 130 is arranged in the accommodating chamber, the compression mechanism 130 includes a crankshaft 131 and a cylinder 133, the crankshaft 131 has an eccentric section 1311, the cylinder 133 is sleeved on the eccentric section 1311 of the crankshaft 131 and fixed to the shell 110; the motor is arranged in the accommodating chamber, the motor includes a stator 171 and a rotor 172, the stator 171 is sleeved on the outside of the cylinder 133 and fixed to the cylinder 133, and the rotor 172 is rotatably sleeved on the outside of the stator 171 and fixed to the crankshaft 131.

[0025] The rotary compressor 100 of the present application adopts an outer rotor motor, wherein the rotor 172 is sleeved on the outside of the stator 171, and the stator 171 is sleeved on the outside of the cylinder 133. This assembly method in which the rotor 172, the stator 171 and the cylinder 133 are nested in sequence makes the height of the rotary compressor 100 not subject to the height constraint of the upper and lower assembly of the motor and the compression mechanism 130, greatly shortening its axial height and breaking through the minimum height of existing micro-rotary compressors. Compared with existing rotary compressors, the height of the rotary compressor 100 of the present application can be made lower, the volume can be made smaller, and it is easier to meet the application requirements of miniaturization and lightweight of micro-rotary compressors.

[0026] In the embodiment of the present application, the longer the axial length of the stator 171 sleeved in the cylinder 133, the more conducive it is to shortening the overall height of the rotary compressor 100. Those skilled in the art can make adaptive adjustments to this according to actual assembly conditions, and this application does not impose any special restrictions on this.

[0027] In some embodiments, a magnetic isolation sleeve 173 is provided between the stator 171 and the cylinder 133 .

[0028] In the embodiment of the present application, the shell 110 is provided with an air intake port 111a and an air exhaust port 111b, and the compression mechanism 130 is provided with a compression chamber 130a, and the compression chamber 130a has an openable and closable air intake port and air outlet port, and the air intake port can be connected with the air intake port 111a, and the air outlet can be connected with the air exhaust port 111b.

[0029] During the operation, the external low-pressure refrigerant enters the compression chamber 130a through the air intake port 111a and the air inlet in turn, and is then compressed in the compression chamber 130a. Thereafter, the compressed high-pressure refrigerant is discharged from the rotary compressor 100 through the air outlet port and the exhaust port 111b in turn.

[0030] In the embodiment of the present application, the rotor 172, the stator 171 and the cylinder 133 are sequentially arranged from the outside to the inside. Therefore, the outer diameter of the rotor 172 is set to be larger. The larger the outer diameter of the rotor 172, the greater the wind resistance generated by the rotation of the rotor 172, and the more likely it is to affect the efficiency of the motor.

[0031] See also Figure 1 and Figure 2In order to reduce the impact of the increase in the outer diameter of the rotor 172 on the motor efficiency, in some embodiments, the accommodating chamber includes a first chamber 110a and a second chamber 110b. The air inlet is connected to the air intake 111a through the first chamber 110a, and the air outlet is connected to the air exhaust 111b through the second chamber 110b. The motor is arranged in the first chamber 110a, and the lubricating oil of the rotary compressor 100 is injected into the second chamber 110b. In this embodiment, the first chamber 110a is a low-pressure area, the second chamber 110b is a high-pressure area, the motor is arranged in the low-pressure area, and the circulation path of the refrigerant in the rotary compressor 100 is as follows. Figure 2 As shown by the hollow arrow, the inner side of the shell 110 of the rotary compressor 100 adopts a low back pressure structure. During operation, the rotor 172 is placed in a low-pressure space with a lower density, which greatly improves the problem of increased wind resistance and lower motor efficiency caused by the increase in the outer diameter of the rotor 172.

[0032] Please continue reading Figure 1 In the embodiment of the present application, specifically, a radially extending sliding vane groove is formed on the cylinder 133, and the compression mechanism 130 further includes a piston 132, a sliding vane, a spring, a first bearing 134 and a second bearing 135; wherein the first bearing 134, the cylinder 133 and the second bearing 135 are sequentially sleeved on the crankshaft 131 from top to bottom, and the first bearing 134 and the second bearing 135 are both clearance-matched with the crankshaft 131, and the compression chamber 130a is enclosed by the crankshaft 131, the cylinder 133, the first bearing 134 and the second bearing 135, and the first bearing 134, the cylinder 133 and the second bearing 135 are sequentially connected and fixed to the housing 110; the piston 132 is sleeved on the eccentric section 1311 and is located inside the cylinder 133; the sliding vane is movably arranged in the sliding vane groove by the spring, and the sliding vane is abutted against the outer peripheral wall of the piston 132. During operation, the crankshaft 131 is driven by the rotor 172 to rotate around the rotation axis, thereby driving the piston 132 on the eccentric section 1311 to roll along the inner wall of the compression chamber 130a, thereby compressing the refrigerant entering the compression chamber 130a.

[0033] See also Figure 1In some embodiments, a bracket 112 is provided on the inner wall of the housing 110, and the stator 171 is placed on the bracket 112. The stator 171 and the first bearing 134 are fixed by a pressure plate 180. The pressure plate 180 is provided above the stator 171. The pressure plate 180 abuts the bottom of the stator 171 against the top of the bracket 112. The pressure plate 180 also abuts against the end of the stator 171 facing away from the bracket 112, that is, the pressure plate 180 abuts against the top of the stator 171, and the pressure plate 180 and the top of the first bearing 134 are fixed by bolts 190.

[0034] In the above embodiment, the bracket 112 and the shell 110 can be integrally formed or separately formed. More commonly, the bracket 112 and the shell 110 are integrally formed. This arrangement can omit the assembly step between the bracket 112 and the shell 110, and there is no need to worry about the connection stability between the bracket 112 and the shell 110.

[0035] In the above embodiment, the first bearing 134 includes a first neck and a first shoulder. The first neck is sleeved on the crankshaft 131 and is located on the inner circumference of the stator 171. The first shoulder extends from the lower end of the first neck toward the stator 171 to the upper end of the cylinder 133. The cylinder 133, the first shoulder and the pressure plate 180 are fixed in sequence by bolts 190.

[0036] Specifically, a screw hole is opened on the first shoulder toward the pressure plate 180, and the pressure plate 180 is opened with a through hole corresponding to the screw hole. The screw rod of the bolt 190 passes through the through hole and is threadedly engaged with the screw hole, thereby fixing the stator 171 to the first shoulder, that is, fixing the stator 171 to the first bearing 134.

[0037] In the above embodiment, the end of the pressure plate 180 away from the stator 171 can either be in a clearance fit with the first neck or in abutment fit with the first neck. When the pressure plate 180 is in abutment fit with the first neck, the end of the pressure plate 180 away from the stator 171 can press the top of the first neck, thereby increasing the tightness between the stator 171 and the first bearing 134.

[0038] In the above embodiment, the shape of the pressure plate 180 is not particularly limited, and can be a fan ring, a circular ring or any other shape, as long as it is convenient to fix the stator 171 and the first bearing 134. In a specific embodiment, the pressure plate 180 is a circular ring, and the pressure plate 180 is sleeved on the crankshaft 131. The pressure plate 180 is provided with a plurality of through holes arranged in sequence along its circumference, and the plurality of through holes are arranged in a central symmetrical manner with the central axis of the crankshaft 131 as the symmetry axis. The first shoulder is provided with a plurality of screw holes arranged in sequence along its circumference, and the screw holes are arranged in a one-to-one correspondence with the through holes. A plurality of bolts 190 pass through the through holes in a one-to-one correspondence and are threadedly engaged with the corresponding screw holes. Such an arrangement can evenly distribute the circumferential force on the stator 171 and the first bearing 134, and avoid the fastening force between the two being concentrated in a local area and affecting the structural stability of the rotary compressor 100.

[0039] In the above embodiment, the second bearing 135 includes a second neck and a second shoulder. The second neck is sleeved on the crankshaft 131 and is sealed to the housing 110 at its lower end by a sealing ring. The second shoulder extends outward from one end of the second neck close to the eccentric section 1311 along the radial direction of the crankshaft 131. Specifically, the second shoulder extends outward from the upper end of the second neck along the radial direction of the crankshaft 131. The radial outer periphery of the second shoulder is connected to the step of the bracket 112. The compression chamber 130a is formed by the crankshaft 131, the cylinder 133, the first shoulder and the second shoulder. The second chamber 110b is formed at the lower end of the second shoulder and the bracket 112, that is, the second chamber 110b is formed by the bottom of the housing 110, the second bearing 135 and the bracket 112.

[0040] See also Figure 1 In some embodiments, the second chamber 110b is provided with a muffler 150, which is located below the second shoulder. The muffler 150 has a muffler cavity, and the air outlet, the muffler cavity, and the exhaust port 111b are sequentially connected. During operation, during the exhaust process, the refrigerant flows through the following path: compression chamber 130a → air outlet → second bearing 135 → muffler cavity → exhaust port 111b. When compressed gas is discharged, the air flow velocity is very high, which generates a lot of noise. By placing the muffler 150 downstream of the air outlet of the compression chamber 130a, this noise can be effectively reduced.

[0041] In the above embodiment, further, a pressure equalizing hole is provided on the second bearing 135 at a position corresponding to the vane groove. Specifically, the pressure equalizing hole is provided at a position corresponding to the vane groove on the second shoulder, and the vane groove is connected to the silencer chamber through the pressure equalizing hole. During the refrigerant compression process, as the degree of compression increases, the spring's own thrust may not be able to meet the requirements of continuously compressing or further compressing the refrigerant. By providing a pressure equalizing hole on the second bearing 135 to connect the silencer chamber with the vane groove, part of the high-pressure refrigerant that comes out of the air outlet of the compression chamber 130a and enters the silencer chamber can enter the vane groove to give the spring thrust, thereby effectively overcoming the problem of insufficient spring's own thrust.

[0042] In the above embodiment, the number and size of the pressure equalizing holes can be adaptively adjusted according to actual conditions, and this application does not impose any special limitation on this.

[0043] See also Figure 1 In some embodiments, the crankshaft 131 is hollow, and an opening is provided on the side surface of the upper end of the crankshaft 131; the second shoulder is provided with a channel, and the channel extends from the inner peripheral side of the second shoulder along its radial direction to the outer peripheral side of the second shoulder. The rotary compressor 100 also includes an oil suction pipe 160, one end of which is inserted into the second chamber 110b, and the other end is inserted into the channel.

[0044] During operation, the first chamber 110a is a low-pressure area in the housing 110, and the second chamber 110b is a high-pressure area in the housing 110. The second chamber 110b is filled with lubricating oil as an oil pool. Under the action of the pressure difference, the lubricating oil is pushed into the matching gap between the crankshaft 131 and the second bearing 135 through the oil suction pipe 160 and flows to the low-pressure space on both sides. Specifically, a part of the lubricating oil flows upward in sequence through the gap between the cylinder 133 and the crankshaft 131, the first bearing 135, and the second bearing 135. The lubricating oil flows through the gap between the bottom of the crankshaft 131 and the housing 110, the central cavity of the crankshaft 131, the opening on the side of the upper end of the crankshaft 131, and the upper part of the housing (located in the first chamber 110a). Then, the lubricating oil in the low-pressure space at the upper part of the housing will flow into the compression chamber 130a with the suction, and finally flow into the oil pool through the exhaust, and the circulation is repeated. The circulation path of the lubricating oil in the rotary compressor 100 is as follows: Figure 2 Indicated by the solid arrow.

[0045] In the above embodiment, the circulation of the lubricating oil in the rotary compressor 100 is driven by pressure difference, without the need for other driving mechanisms, which is conducive to reducing the volume of the rotary compressor 100 and more easily meeting the application requirements of miniaturization and lightweight of the micro rotary compressor 100. In addition, it can also achieve effective energy saving.

[0046] In the embodiment of the present application, the housing 110 is provided with a terminal socket 111 c corresponding to the bracket 112 , and the terminal socket 111 c is connected to the stator 171 via a lead wire.

[0047] See also Figure 1 and Figure 3 In some embodiments, the bracket 112 includes a ring platform 1121 and a first boss 1122. The ring platform 1121 is provided on the inner wall of the housing 110 and extends circumferentially around the crankshaft 131. The first boss 1122 is provided on the side of the ring platform 1121 facing the stator 171. Specifically, the first boss 1122 is formed by extending upward from the top of the inner circumference of the ring platform 1121. The side of the stator 171 facing away from the pressure plate 180 abuts against the first boss 1122, that is, the bottom of the stator 171 abuts against the top of the first boss 1122. A first through hole 1122a is opened on the side wall of the first boss 1122, and the air inlet is connected to the first chamber 110a through the first through hole 1122a. During operation, during the air intake process, the refrigerant flows through the following path: air intake port 111a → first chamber 110a → first through hole 1122a → air inlet → compression chamber 130a. In this embodiment, a gap is provided between the bottom of the stator 171 and the ring platform 1121, which can be used to accommodate the lead wire.

[0048] In the above embodiment, further, a relief groove 1122b is provided on the upper end surface of the bracket 112, and the relief groove 1122b is used to accommodate the lead wire. That is, the side of the bracket 112 facing the stator 171 is provided with a relief groove 1122b for accommodating the lead wire. In order to shorten the overall height of the rotary compressor 100, the extension height of the first boss 1122 should not be too high. This may result in insufficient spacing between the ring platform 1121 and the bottom of the stator 171, and the creepage distance between the lead wire and the stator 171 cannot be met. By further providing the relief groove 1122b on the upper end surface of the bracket 112, the problem of insufficient creepage distance can be effectively solved. In addition, the position of the relief groove 1122b corresponds to the position of the terminal socket 111c, that is, the relief groove 1122b is only provided at the corresponding position of the terminal socket 111c, which can effectively ensure that the support strength of the bracket 112 is not affected by the provision of the relief groove 1122b.

[0049] In some embodiments, the bracket 112 is provided with a second boss on the side facing away from the stator 171, that is, the bottom of the bracket 112 is also provided with a second boss. The outer periphery of the second shoulder abuts the inner periphery of the second boss, and the sidewall of the second boss is provided with a second through-hole 1123a. The outer periphery of the muffler 150 is provided with a cavity, which is corresponding to the second through-hole 1123a. The air outlet, the muffler chamber, the cavity, the second through-hole 1123a, and the exhaust port 111b are sequentially connected. During operation, during exhaust, the refrigerant flows through the following path: compression chamber 130a → air outlet → second bearing 135 → muffler chamber → cavity → second through-hole 1123a → exhaust port 111b.

[0050] In some embodiments, the material of the housing 110 includes at least one of aluminum and an aluminum alloy. The housing 110 of conventional rotary compressors 100 is mostly made of steel, which makes the housing 110 heavy. Using an aluminum housing can further reduce the weight of the compressor, making it even lighter.

[0051] See also Figure 1 and Figure 3 In some embodiments, the shell 110 includes a main shell 111, a bottom cover and a top cover 113, the bracket 112 is arranged on the inner wall of the main shell 111, the bottom and top of the main shell 111 are open, the bottom cover is arranged on the bottom of the main shell 111, and the top cover 113 is arranged on the top of the main shell 111. The accommodating cavity is enclosed by the main shell 111, the bottom cover and the top cover 113, the second chamber 110b is enclosed by the bottom cover, the second bearing 135 and the bracket 112, and the first chamber 110a is located in the area enclosed by the top cover 113, the main shell 111, the second bearing 135 and the bracket 112.

[0052] In the above embodiment, the air intake port 111a can be provided in the main housing 111 or in the top cover 113, the air exhaust port 111b can be provided in the main housing 111 or in the bottom cover, and the terminal socket 111c is provided in the main housing 111. In a specific embodiment, the terminal socket 111c, the air intake port 111a, and the air exhaust port 111b are all provided in the main housing 111.

[0053] In the above embodiment, the main housing 111 , the bottom cover and the top cover 113 are connected and fixed by bolts 190 , and sealing rings are provided between the top cover 113 and the main housing 111 and between the main housing 111 and the bottom cover.

[0054] In the above embodiment, a retaining ring is provided in the middle of the bottom cover, a retaining groove is provided on the inner circumference of the retaining ring, a sealing ring is embedded in the retaining groove, the lower end of the crankshaft 131 extends into the inner side of the retaining ring, and the outer circumference of the lower end of the crankshaft 131 abuts against the sealing ring in the retaining groove.

[0055] The present application also proposes an electrical appliance, which includes a rotary compressor 100. The specific structure of the rotary compressor 100 refers to the above-mentioned embodiment. Since the present electrical appliance adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0056] In the embodiments of the present application, the electrical appliance can be an air conditioner, a water heater, or other device having a rotary compressor 100. Since the volume of the rotary compressor 100 provided in the embodiments of the present application is a significant breakthrough compared to the prior art, its volume can be very small, which makes its application scenarios more diverse.

[0057] In some embodiments, the electrical appliance is an air conditioner, which further includes a condenser, an evaporator, and a throttling device. One end of the condenser is connected to the exhaust port 111b of the rotary compressor 100 so that the compressed refrigerant can enter the condenser through the exhaust port 111b. One end of the evaporator is connected to the intake port 111a of the rotary compressor 100 so that the refrigerant exiting the evaporator can enter the rotary compressor 100 through the intake port 111a. The throttling device is connected between the other end of the condenser and the other end of the evaporator to throttle and reduce the pressure of the high-pressure refrigerant exiting the condenser. The throttling device can be a capillary tube or an expansion valve.

[0058] When the air conditioner is cooling, the high-temperature and high-pressure refrigerant discharged from the exhaust port 111b of the rotary compressor 100 enters the condenser and condenses. Then, the high-pressure refrigerant coming out of the condenser is throttled and reduced in pressure by the throttling device, becoming a low-pressure liquid refrigerant. The throttled and reduced-pressure liquid refrigerant then enters the evaporator, absorbs heat from the surrounding medium, such as air, and evaporates into gas, thereby achieving cooling. After that, the gaseous refrigerant enters the interior of the rotary compressor 100 through the air intake port 111a, and the cycle repeats.

[0059] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rotary compressor, characterized in that: include: a housing, wherein a receiving cavity is provided; A compression mechanism is disposed in the accommodating chamber, the compression mechanism comprising a crankshaft and a cylinder, the crankshaft having an eccentric section, the cylinder sleeve being disposed on the eccentric section of the crankshaft and fixed to the housing; A motor is arranged in the accommodating cavity, and the motor includes a stator and a rotor. The stator is sleeved on the outside of the cylinder and fixed to the cylinder, and the rotor is rotatably sleeved on the outside of the stator and fixed to the crankshaft.

2. The rotary compressor according to claim 1, wherein The shell is provided with an air intake port and an air exhaust port, the accommodating chamber includes a first chamber and a second chamber, the motor is arranged in the first chamber, the lubricating oil of the rotary compressor is injected into the second chamber, the compression mechanism is provided with a compression chamber, the compression chamber has an openable and closable air intake port and an air outlet, the air intake port is connected to the air intake port through the first chamber, and the air outlet is connected to the air exhaust port through the second chamber.

3. The rotary compressor according to claim 2, wherein The compression mechanism further includes a first bearing and a second bearing, along the axial direction of the crankshaft: the first bearing, the cylinder, and the second bearing are sequentially sleeved on the crankshaft, the compression chamber is enclosed by the crankshaft, the cylinder, the first bearing, and the second bearing, and the first bearing, the cylinder, and the second bearing are sequentially connected and fixed to the housing; A bracket is provided on the inner wall of the housing, the stator is placed on the bracket, the stator and the first bearing are fixed by a pressure plate, the pressure plate abuts against one end of the stator facing away from the bracket, and the pressure plate and the first bearing are fixed by bolts.

4. The rotary compressor according to claim 3, wherein The first bearing includes a first neck and a first shoulder. The first neck is sleeved on the crankshaft and located on the inner circumference of the stator. The first shoulder extends from the lower end of the first neck toward the stator to the upper end of the cylinder. The cylinder, the first shoulder and the pressure plate are fixed in sequence by bolts.

5. The rotary compressor according to claim 3, wherein The bracket includes a ring platform and a first boss. The ring platform is provided on the inner wall of the shell and extends circumferentially around the crankshaft. The first boss is provided on the side of the ring platform facing the stator. The side of the stator facing away from the pressure plate abuts against the first boss. A first through hole is provided on the side wall of the first boss, and the air inlet is connected to the first chamber through the first through hole.

6. The rotary compressor according to claim 3, wherein A second boss is provided on the side of the bracket facing away from the stator, a second through hole is opened on the side wall of the second boss, a muffler is provided in the second chamber, the muffler has a muffler cavity, the air outlet, the muffler cavity, the second through hole and the exhaust port are connected in sequence.

7. The rotary compressor according to claim 3, wherein The shell is provided with a terminal socket corresponding to the bracket, and the terminal socket is connected to the stator through a lead. The side of the bracket facing the stator is provided with an avoidance groove for accommodating the lead, and the position of the avoidance groove corresponds to the position of the terminal socket.

8. The rotary compressor according to claim 6, wherein The cylinder is provided with a sliding vane groove, and a pressure equalizing hole is opened at a position corresponding to the sliding vane groove on the second bearing, and the sliding vane groove is connected to the muffler cavity through the pressure equalizing hole.

9. The rotary compressor according to claim 3, wherein The second bearing includes a second neck and a second shoulder. The second neck is sleeved on the crankshaft and is sealed to the housing through a sealing ring. The second shoulder extends outward from one end of the second neck close to the eccentric section along the radial direction of the crankshaft. The second shoulder is provided with a channel. The channel extends from the inner peripheral side of the second shoulder along its radial direction to the outer peripheral side of the second shoulder. The rotary compressor also includes an oil suction pipe. One end of the oil suction pipe is inserted into the second chamber, and the other end is inserted into the channel.

10. The rotary compressor according to any one of claims 1 to 9, characterized in that: The material of the shell includes at least one of aluminum and aluminum alloy.

11. An electrical appliance, characterized in that: The electrical appliance comprises a rotary compressor as described in any one of claims 1-10.

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