CN206299563U - Rotary compressor and the refrigeration system with the rotary compressor - Google Patents

Abstract

The utility model discloses a rotary compressor and a refrigerating system with the rotary compressor. The rotary compressor includes a casing in which an electric motor and a compression mechanism part are accommodated. The compression mechanism part includes at least one set of variable capacity Cylinder assembly, variable capacity cylinder assembly includes: variable capacity cylinder with variable capacity slide slot, variable capacity compression cavity and variable capacity intake channel; variable capacity piston eccentrically arranged in variable capacity compression cavity; movable The variable capacity sliding vane is arranged in the variable capacity sliding vane slot. When the variable capacity intake channel is connected with the low-pressure environment of the refrigeration system, the variable capacity sliding vane always stops against the outer peripheral wall of the variable capacity piston. The variable capacity intake channel and the refrigeration system When the high-pressure environment of the system is connected, the variable-capacity sliding plate is separated from the variable-capacity piston; the voltage-stabilizing component is used to connect the variable-capacity intake channel with the inside of the housing when the variable-capacity intake channel is connected to the high-pressure environment of the refrigeration system. high pressure area. The rotary compressor of the utility model can effectively suppress the pressure fluctuation, and the de-cylinder operation is more stable.

Description

Rotary compressor and refrigeration system with the same

technical field

The utility model relates to the field of compressors, in particular to a rotary compressor and a refrigeration system with the rotary compressor.

Background technique

With the continuous depletion of the earth's resources and the deterioration of the environment, high energy efficiency and low cost have become the constant pursuit of air conditioners and refrigerators. In order to deal with this problem, the technology of capacity control through variable capacity rotary compressors has been continuously developed, which makes it easier to apply technical solutions to improve the capacity control of refrigeration systems, and is more favorable in terms of reliability and cost. In the related technology, the high and low pressure suction of the variable capacity compression chamber is controlled by the pressure introduction device to control the high and low pressure suction of the variable capacity compression chamber to realize the dehydration or normal operation of the variable capacity cylinder assembly. In the above variable capacity mode, the dehydration operation of the variable capacity cylinder At this time, when the pressure on the introduced refrigeration system fluctuates with the load of the refrigeration system, the sliding plate and the piston that were originally separated from each other may fit together, that is, the variable capacity mode has the risk of failure, and there is room for improvement.

Utility model content

The utility model aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, the utility model proposes a rotary compressor with more stable off-cylinder operation.

Another object of the present utility model is to provide a refrigeration system with the above-mentioned rotary compressor.

According to the rotary compressor according to the first aspect of the utility model, the sealed housing accommodates the electric motor and the rotary compression mechanism part driven by the electric motor, and the compression mechanism part includes at least one set of variable capacity cylinder assemblies , the variable capacity cylinder assembly includes: a variable capacity cylinder, the variable capacity cylinder is provided with a variable capacity sliding vane groove, a variable capacity compression chamber and a variable capacity intake channel; a variable capacity piston, the variable capacity piston rotates eccentrically Set in the variable volume compression chamber; the variable volume slide, the variable volume slide is movably arranged in the variable volume slide groove, the optional of the variable volume intake channel is compatible with the low pressure of the refrigeration system The environment or the high-pressure environment of the refrigeration system is connected. When the variable-capacity intake passage is connected with the low-pressure environment of the refrigeration system, the variable-capacity slide always stops against the outer peripheral wall of the variable-capacity piston, and the variable-volume intake passage When communicating with the high-pressure environment of the refrigeration system, the variable capacity sliding plate is separated from the variable capacity piston; When the high-pressure environment is connected, the variable volume intake passage is connected with the high-pressure area in the housing.

According to the rotary compressor of the utility model, it is a variable capacity rotary compressor. By setting a voltage stabilizing component, when the high pressure of the refrigeration system is introduced into the variable capacity intake channel, the communication between the variable capacity intake channel and the high pressure area in the housing is realized. , Suppress the fluctuation caused by the introduction of high pressure, avoid the joint of the variable capacity sliding plate and the variable capacity piston when the cylinder is out of operation, and improve the stability.

The pressure stabilizing assembly includes: a stabilizing chamber connected to the variable volume intake passage, the stabilizing chamber communicating with the high pressure area in the casing; a valve core, the valve The core is movably arranged in the pressure stabilizing chamber to communicate or cut off the pressure stabilizing chamber and the variable volume intake channel; the spool limiting device is used to set the The spool is positioned at a position communicating with the pressure stabilizing chamber and the variable volume intake passage.

The valve core limiting device is an elastic member, the elastic member is arranged in the pressure stabilizing chamber, and the elastic member is arranged between the valve core and the cavity wall of the pressure stabilizing chamber.

The pressure stabilizing chamber includes: a spool cavity; a first channel, one end of the first channel communicates with the spool cavity, and the other end of the first channel communicates with the high-pressure area in the housing;

The second channel, one end of the second channel is connected with the valve core cavity, the other end of the second channel is in communication with the variable volume intake channel, and the valve core is movably arranged on the valve core In the cavity, the elastic member is arranged between the valve core and the cavity wall of the valve core cavity.

The spool cavity includes a first cavity and a second cavity, the first cavity is connected to the second cavity, and the spool is movably arranged in the first cavity to isolate or communicate The first cavity and the second cavity, when the valve core separates the first cavity and the second cavity, the elastic member is located in the second cavity.

The first cavity is a cylindrical cavity, the diameter of the first cavity is d1, the equivalent diameter of the second channel is d2, and the equivalent diameter of the first channel is d3, wherein d2≥ 1mm, d3≥2mm.

The valve core is cylindrical, and the diameter of the valve core is d4, wherein d1≥d4+0.1, d4≥d2+0.5.

The valve core is conical or frustoconical, and the gap between the outer peripheral wall of the valve core and the wall surface of the first cavity is d5, wherein 0.1mm≤d5≤5mm.

The diameter of the bottom surface of the valve core is d6, wherein d6≥d2+0.1.

The elastic member is a spring, one end of the spring is connected with the valve core, and the other end of the spring is connected with the cavity wall of the second cavity.

The elastic member is a flat gasket with at least a part protruding toward the valve core under normal conditions.

The plane gasket is configured to be compressed between the valve core and the bottom wall of the valve core cavity to isolate the valve core cavity when the variable volume intake channel communicates with the low-pressure environment of the refrigeration system with the second channel.

The valve core cavity is a cylindrical cavity, the diameter of the valve core cavity is d1, the equivalent diameter of the second channel is d2, the equivalent diameter of the first channel is d3, wherein d2≥1mm, d3≥2mm.

The valve core is cylindrical, and the diameter of the valve core is d4, wherein d1≥d4+0.1, d4≥d2+0.5.

The spool limiting device is a magnetic part, and the magnetic part is arranged at an end of the cavity wall of the pressure stabilizing chamber away from the variable volume intake passage.

The rotary compressor also includes a pressure introduction device, the pressure introduction device is connected to the refrigeration system, and the pressure introduction device can selectively connect the low-pressure environment of the refrigeration system with the variable capacity intake passage, or The pressure introducing device can selectively connect the high-pressure environment of the refrigeration system with the variable capacity intake passage.

The rotary compressor further includes: a variable capacity sliding vane limiting device, the variable capacity sliding vane limiting device is used to set the variable capacity The displacement sliding plate is positioned at a position separated from the displacement piston.

The refrigeration system according to the second aspect of the present utility model includes the rotary compressor described in the first aspect.

According to the refrigeration system of the utility model, the structure is simple and the efficiency is high.

Description of drawings

Fig. 1 is the structural representation of the rotary compressor of the present utility model;

Fig. 2 is a longitudinal sectional view of the compression mechanism part of the first embodiment of the rotary compressor of the present invention during normal operation;

Fig. 3 is an enlarged view at A place of Fig. 2;

Fig. 4 is the B-B direction sectional view of Fig. 2;

Fig. 5 is a longitudinal sectional view of the compression mechanism part of the first embodiment of the rotary compressor of the present invention when it is running out of cylinder;

Fig. 6 is an enlarged view at C of Fig. 5;

Fig. 7 is a D-D cross-sectional view of Fig. 5;

Fig. 8 is a longitudinal sectional view of the compression mechanism part of the second embodiment of the rotary compressor of the present invention during normal operation;

Fig. 9 is an enlarged view at E of Fig. 8;

Fig. 10 is a longitudinal sectional view of the compression mechanism part of the second embodiment of the rotary compressor of the present invention during de-cylinder operation;

Fig. 11 is an enlarged view at the F place of Fig. 10;

Fig. 12 is the second embodiment of the rotary compressor of the present invention, a cross-sectional view of the elastic member when the cylinder is out of operation;

Fig. 13 is the second embodiment of the rotary compressor of the present invention, the front view of the elastic member during de-cylinder operation;

Fig. 14 is a longitudinal sectional view of the compression mechanism part of the third embodiment of the rotary compressor of the present invention during normal operation;

Fig. 15 is an enlarged view at the G place of Fig. 14;

Fig. 16 is a longitudinal sectional view of the compression mechanism part of the second embodiment of the rotary compressor of the present invention during de-cylinder operation;

FIG. 17 is an enlarged view at H in FIG. 16 .

Reference signs:

Rotary compressor 100, electric motor 101, compression mechanism part 102, housing 103, variable capacity cylinder 1, variable capacity sliding vane groove 11, variable capacity compression cavity 12, variable capacity intake channel 13, variable capacity piston 2, variable capacity slide plate 3, main bearing 51, auxiliary bearing 52, voltage stabilizing assembly 4, stabilizing chamber 41, spool chamber 411, first chamber 4111, second chamber 4112, first channel 412, second channel 413, Spool 42, spring 43, plane washer 44, dividing plate 6, variable volume sliding plate limiter 7, pressure introduction device 8, cylinder 91, piston 93, crankshaft 94.

detailed description

Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" The orientation or positional relationship indicated by , "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying the referred device Or elements must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrated; it can be mechanically connected, or electrically connected, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components , unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

The rotary compressor 100 according to the embodiment of the present utility model will be described in detail below with reference to FIGS. Refrigerants in refrigeration systems.

As shown in FIGS. 1-17 , according to the rotary compressor 100 of the embodiment of the present utility model, an electric motor 101 composed of a stator and a rotor and a compression mechanism part 102 are accommodated in a sealed casing 103 . The compression mechanism part 102 includes at least one set of variable displacement cylinder assemblies, and the variable displacement cylinder assembly includes a variable displacement cylinder 1 , a variable displacement piston 2 , a variable displacement sliding plate 3 and a pressure stabilizing assembly 4 .

In some embodiments, as shown in FIGS. 1-17 , the rotary compressor 100 can be a two-cylinder rotary compressor 100, and the compression mechanism part 102 of the two-cylinder rotary compressor 100 can also include a cylinder 91, a cylinder 91 and a variable cylinder. The main bearing 51 and the auxiliary bearing 52 on both sides of the capacity cylinder 1 and the partition plate 6 arranged between the cylinder 91 and the variable capacity cylinder 1 .

Of course, in some other embodiments, the rotary compressor 100 of the present utility model can also be a multi-cylinder rotary compressor 100, and the compression mechanism part 102 of the multi-cylinder rotary compressor 100 can also include a plurality of cylinders 91, and multiple cylinders located therein. The main bearing 51 and the auxiliary bearing 52 on both sides of a cylinder 91 and at least one variable displacement cylinder 1 are arranged between adjacent cylinders 91 and variable displacement cylinders 1, between two adjacent cylinders 91 or between two adjacent variable displacement cylinders. A plurality of partitions 6 between the cylinders 1.

As shown in Figure 4 and Figure 7, the variable capacity cylinder 1 is provided with a variable capacity sliding vane groove 11, a variable capacity compression chamber 12 and a variable capacity intake passage 13, and the variable capacity piston 2 is arranged in the variable capacity compression chamber 12 in an eccentrically rotating manner. , The variable capacity slide 3 is movably located in the variable capacity slide groove 11 .

The variable capacity intake passage 13 of the variable capacity cylinder 1 can be optionally communicated with the low-pressure environment of the refrigeration system or the high-pressure environment of the refrigeration system, that is, the variable capacity intake passage 13 can be communicated with the low-pressure environment of the refrigeration system, so that the low-pressure gas can flow from the refrigeration system. The system enters the variable volume intake channel 13; the variable capacity intake channel 13 can also communicate with the high-pressure environment of the refrigeration system, so that high-pressure gas can enter the variable capacity intake channel 13 from the refrigeration system.

The pressure stabilizing assembly 4 is used to connect the variable capacity intake channel 13 with the high pressure area in the casing 103 of the rotary compressor 100 when the variable capacity intake channel 13 of the variable capacity cylinder 1 communicates with the high pressure environment of the refrigeration system.

As shown in Fig. 2-Fig. 4, Fig. 8-Fig. 9, Fig. 14-Fig. 15, when the variable capacity intake channel 13 is connected with the low-pressure environment of the refrigeration system, the end of the variable capacity sliding plate 3 facing the variable capacity piston 2 is Low pressure, the end of the variable capacity sliding vane 3 away from the variable capacity piston 2 is the high pressure in the housing 103, under the action of the pressure difference, the variable capacity sliding vane 3 always stops against the outer peripheral wall of the variable capacity piston 2, and the rotary compressor 100 is in the Normal mode for normal compression.

As shown in Fig. 5-Fig. 7, Fig. 10-Fig. 11, Fig. 16-Fig. 17, when the variable volume intake passage 13 communicates with the high-pressure environment of the refrigeration system, the end of the variable capacity sliding plate 3 facing the variable capacity piston 2 is High pressure, the end of the variable volume slide 3 away from the variable volume piston 2 is the high pressure in the housing 103, at this time the pressure difference between the two ends of the variable volume slide 3 is small, the variable volume slide 3 is separated from the variable volume piston 2, and rotates The compressor 100 is in the de-cylinder mode. At this time, the pressure stabilizing assembly 4 communicates with the variable capacity intake channel 13 and the high pressure area in the casing 103 of the rotary compressor 100, thereby effectively suppressing the The high-pressure fluctuation introduced into the variable capacity intake channel 13 effectively prevents the situation that the variable capacity sliding plate 3 and the variable capacity piston 2 are reattached due to the pressure fluctuation when the high pressure gas is introduced into the refrigeration system, which improves the performance of the rotary compressor 100. Stability during de-cylinder operation.

1-11 and 14-17, the high-pressure environment of the refrigeration system is represented by Pd2, the high-pressure area in the housing 103 is represented by Pd1, and the low-pressure environment of the refrigeration system is represented by Ps.

According to the rotary compressor 100 of the embodiment of the present utility model, by setting the pressure stabilizing assembly 4, the variable capacity intake passage 13 communicates with the high-pressure area in the housing 103 during the off-cylinder operation, effectively suppressing the introduction of the refrigeration system. The pressure fluctuates with the load of the refrigeration system, avoiding the joint between the variable displacement piston 2 and the variable displacement slide plate 3 during the de-cylinder operation, improving the stability of the de-cylinder operation and the stability of the variable capacity mode.

Optionally, the rotary compressor 100 can also include a pressure introduction device 8, which is connected to the refrigeration system, and the pressure introduction device 8 can selectively communicate with the low-pressure environment of the refrigeration system and the variable capacity intake passage 13, or introduce a pressure The device 8 can selectively connect the high-pressure environment of the refrigeration system with the variable capacity intake channel 13, that is, the pressure introduction device 8 can switchably input the high-pressure gas or low-pressure gas in the refrigeration system into the variable capacity intake channel 13, so that the rotary compressor 100 switches between normal operating mode and de-cylinder mode. Optionally, the pressure introducing device 8 may be a four-way valve.

The first embodiment, the second embodiment and the third embodiment of the rotary compressor 100 according to the present invention will be described in detail below with reference to FIGS. 1-17 .

First example:

1-7, the rotary compressor 100 includes a housing 103, an electric motor 101 sealed in the housing 103 and a rotary compression mechanism part 102. The compression mechanism part 102 includes a main bearing 51, an auxiliary bearing 52, and a crankshaft 94. , Partition plate 6, pressure introduction device 8, a cylinder assembly and a variable capacity cylinder assembly, variable capacity slide plate limiter 7.

As shown in Figures 2 and 5, the cylinder assembly includes a cylinder 91, a slide (not shown), and a piston 93, the slide is movably arranged on the cylinder 91, and the slide can reciprocate and always stop against the piston 93 The outer peripheral wall, the piston 93 is fixed on the eccentric part of the crankshaft 94, and the piston 93 is arranged in the compression chamber of the cylinder 91 to rotate eccentrically.

As shown in FIGS. 2-7 , the variable capacity cylinder assembly includes a variable capacity cylinder 1 , a variable capacity piston 2 , a variable capacity slide 3 and a pressure stabilizing component 4 .

As shown in Figure 2 and Figure 5, the partition 6 is sandwiched between the cylinder 91 and the variable capacity cylinder 1, the cylinder 91 is sandwiched between the main bearing 51 and the partition 6, and the variable capacity cylinder 1 is sandwiched between the partition 6 Between the auxiliary bearing 52.

The variable capacity sliding vane limiting device 7 is used to position the variable capacity sliding vane 3 at a position separated from the variable capacity piston 2 when the variable capacity intake channel 13 communicates with the high-pressure area in the housing 103, thereby further improving the cylinder removal. runtime stability. Optionally, the variable volume slide limiting device 7 includes a magnet structure, and when the voltage stabilizing assembly 4 communicates with the variable volume intake channel 13 and the high pressure area in the housing 103, the variable volume slide 3 is positioned under the magnetic force of the magnet structure At the end of the variable capacity sliding vane groove 11 away from the variable capacity piston 2 .

As shown in FIGS. 2-7 , the pressure stabilizing assembly 4 includes a pressure stabilizing chamber 41 , a valve core 42 and a valve core limiting device. The pressure stabilizing chamber 41 is connected with the variable volume air intake passage 13, and the stabilizing chamber 41 communicates with the high pressure area in the casing 103. Cavity 41 and variable capacity intake channel 13 , when valve core 42 moves to the position of connecting pressure stabilizing cavity 41 and variable capacity intake channel 13 , variable capacity intake channel 13 communicates with the high pressure area in housing 103 . The spool limiting device is used to position the spool 42 at a position communicating with the pressure stabilizing chamber 41 and the variable volume intake passage 13 .

When the variable volume air inlet channel 13 is connected with the low-pressure environment in the refrigeration system, one end of the spool 42 is low pressure, and the other end of the spool 42 is high pressure in the housing 103, and the spool 42 is under the action of the pressure difference between the two ends. When the spool 42 moves to the position of isolating the pressure stabilizing chamber 41 and the variable volume intake passage 13 , the variable volume intake passage 13 is disconnected from the high pressure area in the housing 103 .

When the variable volume intake channel 13 is connected with the high-pressure environment of the refrigeration system, one end of the valve core 42 is the high pressure of the refrigeration system, and the other end of the valve core 42 is the high pressure in the housing 103, and the pressure difference between the two ends of the valve core 42 is small , the spool 42 is positioned at a position communicating with the pressure stabilizing chamber 41 and the variable volume intake passage 13 under the action of the spool limiter, so that the variable volume intake passage 13 communicates with the high pressure area in the casing 103 .

That is to say, through the movement of the spool 42 in the pressure stabilizing chamber 41, the connection or disconnection between the variable capacity air intake channel 13 and the high-pressure area in the housing 103 can be realized, and the spool limit device can set the spool 42 is positioned at a position where the pressure stabilizing chamber 41 communicates with the variable volume intake passage 13, so that the position of the valve core 42 is more stable, and the stability during de-cylinder operation is further improved.

In some embodiments of the present utility model, as shown in Fig. 2-Fig. 7, the valve core limiting device is an elastic member, the elastic member is arranged in the pressure stabilizing chamber 41, and the elastic member is arranged between the valve core 42 and the pressure stabilizing Between the chamber walls of the chamber 41, when the valve core 42 moves to the position of separating the pressure-stabilizing chamber 41 from the variable-capacity intake passage 13 under the action of the pressure difference, the elastic member is compressed to store elastic potential energy. When the valve core When the pressure difference between the two ends of 42 is small, the elastic force of the elastic member overcomes the pressure difference and positions the valve core 42 at a position where the pressure stabilizing chamber 41 communicates with the variable volume intake passage 13 .

By arranging the elastic member, it can play the role of buffering, that is, the valve core 42 moves to the position that cuts off the pressure stabilizing chamber 41 and the variable capacity intake passage 13 under the action of the pressure difference, and runs smoothly, and due to the arrangement of the elastic member The collision between the spool 42 and the wall of the pressure stabilizing chamber 41 can be avoided, and abnormal noise can be avoided.

Specifically, as shown in FIG. 3 and FIG. 6 , the pressure stabilizing chamber 41 is disposed on the partition 6 , and the pressure stabilizing chamber 41 may include a spool chamber 411 , a first channel 412 and a second channel 413 . One end of the first passage 412 communicates with the spool chamber 411, and the other end of the first passage 412 communicates with the high-pressure area in the housing 103; one end of the second passage 413 communicates with the spool chamber 411, and the other end of the second passage 413 One end communicates with the variable volume intake channel 13 ; the valve core 42 is movably disposed in the valve core cavity 411 , and the elastic member is disposed between the valve core 42 and the cavity wall of the valve core cavity 411 .

More specifically, as shown in Figures 2-7, the spool cavity 411 includes a first cavity 4111 and a second cavity 4112, the first cavity 4111 is connected to the second cavity 4112, and the spool 42 is movably arranged In the first cavity 4111 to isolate or connect the first cavity 4111 and the second cavity 4112 , when the valve core 42 isolates the first cavity 4111 and the second cavity 4112 , the elastic member is located in the second cavity 4112 . Elastic part is spring 43, and one end of spring 43 links to each other with spool 42, and the other end of spring 43 links to each other with the cavity wall of second cavity 4112, because the other end of spring 43 links to each other with the cavity wall of second cavity 4112, thereby When the spool 42 moves to the position where the pressure-stabilizing chamber 41 communicates with the variable-capacity intake passage 13 under the elastic force of the spring 43, it will not escape from the pressure-stabilizing chamber 41 and will not communicate with other parts of the rotary compressor 100. The structure collides, and the movement of the spool 42 is more stable.

As shown in FIG. 3 and FIG. 5 , the first channel 412 extends horizontally, and the first cavity 4111 , the second cavity 4112 and the second channel 413 are concentric and vertically arranged, so that the processing of the separator 6 is easier. Preferably, the diameters of the first cavity 4111, the second cavity 4112, and the second channel 413 are successively reduced. Since the diameter of the second cavity 4112 is smaller than that of the first cavity 4111, the valve core 42 can pass through the first cavity. The bottom wall of the body 4111 is in contact with and seals the communication port between the second cavity 4112 and the first cavity 4111, and the sealing effect is good.

Further, as shown in FIG. 3 , the first cavity 4111 is a cylindrical cavity, the diameter of the first cavity 4111 is d1, the equivalent diameter of the second channel 413 is d2, and the equivalent diameter of the first channel 412 is d3, where d2≥1mm, d3≥2mm. The spool 42 is cylindrical, and the diameter of the spool 42 is d4, where d1≥d4+0.1, and d4≥d2+0.5.

By limiting the above-mentioned structural dimensions, such as d1, d2, d3, and d4, it can be ensured that when the variable capacity cylinder assembly is running, as shown in Figures 2-4, the valve core 42 isolates the first cavity 4111 from the second cavity 4112, that is, when the spool 42 seals the communication port between the first cavity 4111 and the second cavity 4112, it can cut off the pressure stabilizing cavity 41 and the variable volume intake passage 13, and then make the variable volume intake passage 13 and the housing The high-pressure environment in 103 is isolated, and the sealing performance is good, which ensures the normal operation of the rotary compressor 100; The position where the cavity 4111 communicates with the second cavity 4112, so that the pressure stabilizing cavity 41 communicates with the variable capacity intake passage 13, and then the variable capacity intake channel 13 communicates with the high-pressure environment in the housing 103, and the variable capacity compression is suppressed. The pressure fluctuation of the cavity 12 plays a role of stabilizing the pressure.

The working process of the first embodiment of the utility model rotary compressor 100 is described in detail below with reference to FIGS. 1-7 :

As shown in Figures 2-4, when the gas introduced into the variable volume intake passage 13 by the pressure introduction device 8 is at low pressure, the variable volume intake passage 13 communicates with the low-pressure environment of the refrigeration system, and the variable capacity slide 3 faces the variable capacity One end of the piston 2 is low pressure, and the end of the variable volume slide 3 away from the variable volume piston 2 is a high pressure in the housing 103. Under the action of the pressure difference, the variable volume slide 3 always stops against the outer peripheral wall of the variable volume piston 2, The rotary compressor 100 is in the normal operation mode to achieve normal compression. At this time, the second channel 413 is low pressure, and the first channel 412 is high pressure in the housing 103, that is, there is a large pressure difference between the two ends of the valve core 42. The spool 42 moves to the position of isolating the first cavity 4111 and the second cavity 4112 under the action of the pressure difference, the spring 43 is compressed into the second cavity 4112, and the variable-capacity intake passage 13 and the air in the casing 103 High pressure areas are disconnected.

As shown in Figures 5-7, when the gas introduced into the variable capacity intake channel 13 by the pressure introduction device 8 is at high pressure, the variable capacity intake channel 13 communicates with the high-pressure environment of the refrigeration system, and the variable capacity slide 3 faces the variable capacity One end of the piston 2 is high pressure, and the end away from the variable volume piston 2 is high pressure in the housing 103. At this time, the pressure difference between the two ends of the variable volume slide 3 is small, and the variable volume slide 3 is absorbed by the magnet structure. Positioned at the end far away from the variable volume piston 2, the variable volume sliding plate 3 is separated from the variable volume piston 2, and the rotary compressor 100 is in the de-cylinder mode. At this time, the second channel 413 is high pressure, and the first channel 412 is the housing 103 The high pressure inside, that is, the pressure difference between the two ends of the spool 42 is small, the spool 42 moves to a position away from the variable volume intake passage 13 under the elastic force of the spring 43, and at least a part of the spring 43 extends out of the second cavity 4112 The movement of the spool 42 makes the first cavity 4111 communicate with the second cavity 4112, thereby realizing the communication between the variable volume intake channel 13 and the high-pressure area in the housing 103, and the high pressure in the housing 103 can effectively suppress the Changes in the working conditions of the refrigeration system lead to high-pressure fluctuations introduced into the variable-capacity compression chamber 12, thereby effectively preventing the situation where the variable-capacity sliding plate 3 and the variable-capacity piston 2 are attached due to pressure fluctuations when high pressure is introduced.

Of course, according to the different setting positions of the variable capacity cylinder 11, in other embodiments, the main bearing 51 may also be used to seal the variable capacity cylinder 11, that is, in this embodiment, the variable capacity cylinder 1 is sandwiched between the main bearing 51 and the Between the partitions 6.

Second example:

8-13, the rotary compressor 100 includes a housing 103, an electric motor 101 sealed in the housing 103 and a rotary compression mechanism part 102. The compression mechanism part 102 includes a main bearing 51, an auxiliary bearing 52, and a crankshaft 94. , partition plate 6, pressure introduction device 8, a cylinder assembly and a variable capacity cylinder assembly, variable capacity slide plate limiter 7, wherein the variable capacity cylinder assembly includes variable capacity cylinder 1, variable capacity piston 2, variable capacity slide Sheet 3 and voltage regulator component 4.

The difference between the rotary compressor 100 of the second embodiment and the rotary compressor 100 of the first embodiment is that the structure of the spool limiter in the pressure stabilizing assembly 4 is different and the structure of the spool cavity 411 is different. In the two embodiments, as shown in FIG. 12 and FIG. 13 , the valve core limiting device is an elastic member, and the elastic member is a flat gasket 44 that at least partially protrudes toward the valve core 42 under normal conditions. Specifically, the outer periphery of the planar gasket 44 protrudes toward the valve core 42 relative to the central portion.

As shown in FIGS. 8-11 , the valve core 42 is movably disposed in the valve core cavity 411 , and the plane gasket 44 is disposed between the valve core 42 and the wall of the valve core cavity 411 . Both the plane gasket 44 and the valve core 42 are disposed in the valve core cavity 411 , and the shapes of the plane gasket 44 and the valve core 42 are both matched with the shape of the valve core cavity 411 . The plane gasket 44 is arranged to be pressed between the valve core 42 and the bottom wall of the valve core cavity 411 to isolate the valve core cavity 411 from the second channel 413 when the variable volume intake passage 13 communicates with the low-pressure environment of the refrigeration system .

As shown in Figure 9 and Figure 11, the spool cavity 411 is a cylindrical cavity, the diameter of the spool cavity 411 is d1, the equivalent diameter of the second channel 413 is d2, the equivalent diameter of the first channel 412 is d3, Where d2≥1mm, d3≥2mm, the valve core 42 is cylindrical, and the diameter of the valve core 42 is d4, wherein d1≥d4+0.1, d4≥d2+0.5.

By limiting the above-mentioned structural dimensions, such as d1, d2, d3, and d4, it can be ensured that when the variable capacity cylinder assembly is in operation, as shown in Figure 8 and Figure 9, the variable capacity intake channel 13 communicates with the low-pressure environment of the refrigeration system , the plane gasket 44 is compressed between the valve core 42 and the bottom wall of the valve core chamber 411 to block the valve core chamber 411 and the second channel 413, specifically, the valve core 42 will protrude the plane gasket 44 The outer periphery is flattened, so that the plane gasket 44 isolates the spool chamber 411 from the second passage 413, that is, the plane gasket 44 seals the connection port between the spool chamber 411 and the second passage 413, thereby separating the pressure stabilizing chamber 41 from the variable volume The air intake channel 13, and then the variable capacity air intake channel 13 is isolated from the high-pressure environment in the housing 103, and the sealing performance is good, which ensures the normal operation of the rotary compressor 100; , the spool 42 moves to the position where the spool chamber 411 communicates with the second channel 413 under the elastic force of the plane gasket 44, so that the pressure stabilizing chamber 41 communicates with the variable capacity intake channel 13, thereby making the variable capacity intake air The channel 13 communicates with the high-pressure environment in the casing 103 to suppress the pressure fluctuation of the variable volume compression chamber 12 and play a role of stabilizing the pressure.

In short, in the first embodiment, the elastic member is a spring 43, and the spool cavity 411 includes a first cavity 4111 and a second cavity 4112 with different diameters, and the spool 42 stops against the first cavity 4111 The bottom wall is to isolate the first cavity 4111 and the second cavity 4112, thereby realizing the isolation of the spool cavity 411 and the second channel 413; and in the second embodiment, the elastic member is a plane gasket 44, and the spool cavity 411 is cylindrical as a whole, has a simple structure and is easy to process. The valve core 42 pushes the plane gasket 44 so that the plane gasket 44 stops against the bottom wall of the valve core cavity 411 to isolate the valve core cavity 411 from the second passage 413, so that it can be more easily The isolation of the pressure stabilizing chamber 41 and the second channel 413 can be effectively realized.

Third embodiment:

14-17, the rotary compressor 100 includes a housing 103, an electric motor 101 sealed in the housing 103 and a rotary compression mechanism part 102. The compression mechanism part 102 includes a main bearing 51, an auxiliary bearing 52, and a crankshaft 94. , partition plate 6, pressure introduction device 8, a cylinder assembly and a variable capacity cylinder assembly, variable capacity slide plate limiter 7, wherein the variable capacity cylinder assembly includes variable capacity cylinder 1, variable capacity piston 2, variable capacity slide Sheet 3 and regulator component 4.

The difference between the rotary compressor 100 of the third embodiment and the rotary compressor 100 of the first embodiment lies in that the shape of the valve core 42 is different.

As shown in Figures 15 and 17, in the third embodiment, the valve core 42 is conical or conical, and the gap between the outer peripheral wall of the valve core 42 and the wall surface of the first cavity 4111 is d5, where 0.1 mm≤d5≤5mm, the diameter of the bottom surface of the spool 42 is d6, where d6≥d2+0.1, the cross-sectional area of the spool 42 gradually increases from the end away from the second channel 413 to the end close to the second channel 413 Therefore, when the cylinder is out of operation, it is more conducive for the high-pressure gas of the refrigeration system to enter the valve core cavity 411, and it can better stabilize the pressure.

Certainly, the structure of the spool limiting device in the present invention is not limited to the elastic member. In some embodiments, the spool limiting device is a magnetic member, and the magnetic member is arranged on the wall far away from the pressure stabilizing chamber 41. At one end of the variable volume intake passage 13 , the valve core 42 is positioned at a position communicating with the pressure stabilizing chamber 41 and the variable volume intake passage 13 under the magnetic force of the magnetic element.

In short, the rotary compressor 100 according to the embodiment of the present utility model is a variable capacity rotary compressor 100. By setting the voltage stabilizing component 4, the variable capacity cylinder component is connected to the variable capacity intake passage 13 when it is in de-cylinder operation. With the high-pressure area in the housing 103, the pressure fluctuation due to the introduction of the refrigeration system is suppressed, and the displacement piston 2 and the displacement sliding plate 3 are avoided, so that the de-cylinder operation is more stable.

The refrigeration system according to the embodiment of the utility model is briefly described below. The refrigeration system according to the embodiment of the utility model includes the rotary compressor 100 in the above embodiment, and may include an indoor heat exchanger, an outdoor heat exchanger, a throttling device and A four-way valve.

The variable capacity intake channel 13 of the variable capacity cylinder 1 is connected to the pipeline between the four-way valve and the outdoor heat exchanger. By controlling the communication status of the four valve ports of the four-way valve, the refrigeration system can be controlled between the cooling mode and the heating mode. Switch between modes. When the refrigeration system is in the cooling mode, the variable capacity air intake passage 13 of the variable capacity cylinder 1 is at high pressure, and the variable capacity cylinder 1 is deactivated at this time; when the refrigeration system is in the heating mode, the variable capacity intake air of the variable capacity cylinder 1 Passage 13 is low pressure, and variable capacity cylinder 1 is in normal operation state at this moment.

According to the refrigerating system of the embodiment of the present utility model, by setting the above-mentioned rotary compressor 100, the system runs more stably and has high efficiency.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first feature and the second feature through an intermediary indirect contact. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations of the present invention, and those skilled in the art are within the scope of the present invention. Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (18)

1. a kind of rotary compressor, it is characterised in that electric motor has been received in the housing of sealing and has been driven by the electric motor Dynamic revolving compression mechanical part, the compression mechanical part includes at least one set of variable capacity cylinder assembly, the variable capacity gas Cylinder component includes：

Transfiguration cylinder, the transfiguration cylinder is provided with transfiguration vane slot, variable-volume storage chamber and transfiguration inlet channel；

Transfiguration piston, is located in the variable-volume storage chamber to the transfiguration piston eccentric rotary；

Transfiguration slide plate, the transfiguration slide plate is movably arranged in the transfiguration vane slot, the transfiguration inlet channel washability Connected with the environment under low pressure of refrigeration system or the hyperbaric environment of refrigeration system, the low pressure of the transfiguration inlet channel and refrigeration system During environmental communication, the transfiguration slide plate is all the time only to the periphery wall of the transfiguration piston, the transfiguration inlet channel and the system When the hyperbaric environment of cooling system is connected, the transfiguration slide plate is separated with the transfiguration piston；

Stabipack, the stabipack is used to be connected with the hyperbaric environment of the refrigeration system in the transfiguration inlet channel When, connect the high-pressure area in the transfiguration inlet channel and the housing.

2. rotary compressor according to claim 1, it is characterised in that the stabipack includes：

Voltage stabilizing cavity volume, the voltage stabilizing cavity volume is connected with the transfiguration inlet channel, the height in the voltage stabilizing cavity volume and the housing Intermediate pressure section is connected；

Valve element, the valve element is movably arranged in the voltage stabilizing cavity volume to connect or separate the voltage stabilizing cavity volume and the transfiguration Inlet channel；

Valve element stopping means, the valve element stopping means is used to for the valve element to be positioned at the connection voltage stabilizing cavity volume and the change Hold the position of inlet channel.

3. rotary compressor according to claim 2, it is characterised in that the valve element stopping means is elastic component, described Elastic component is located in the voltage stabilizing cavity volume, and the elastic component is arranged between the cavity wall of the valve element and the voltage stabilizing cavity volume.

4. rotary compressor according to claim 3, it is characterised in that the voltage stabilizing cavity volume includes：

Spool chamber；

First passage, one end of the first passage connects with the spool chamber, and the other end of the first passage with it is described High-pressure area connection in housing；

Second channel, one end of the second channel is connected with the spool chamber, the other end of the second channel and the change Hold inlet channel connection, the valve element is movably arranged in the spool chamber, and the elastic component is arranged on the valve element and institute State between the cavity wall of spool chamber.

5. rotary compressor according to claim 4, it is characterised in that the spool chamber includes the first cavity and the second chamber Body, first cavity is connected with second cavity, the valve element be movably arranged in first cavity separating or First cavity and second cavity are connected, it is described when the valve element separates first cavity with second cavity Elastic component is located in second cavity.

6. rotary compressor according to claim 5, it is characterised in that first cavity is cylinder cavity, described A diameter of d1 of the first cavity, the equivalent diameter of the second channel is d2, and the equivalent diameter of the first passage is d3, wherein d2≥1mm,d3≥2mm。

7. rotary compressor according to claim 6, it is characterised in that the valve element be it is cylindric, the valve element it is straight Footpath is d4, wherein d1 >=d4+0.1, d4 >=d2+0.5.

8. rotary compressor according to claim 6, it is characterised in that the valve element be it is coniform or round table-like, it is described Gap between the wall of the periphery wall of valve element and first cavity is d5, wherein 0.1mm≤d5≤5mm.

9. rotary compressor according to claim 8, it is characterised in that a diameter of d6 of the bottom surface of the valve element, wherein d6≥d2+0.1。

10. the rotary compressor according to any one of claim 5-9, it is characterised in that the elastic component is spring, institute The one end for stating spring is connected with the valve element, and the other end of the spring is connected with the cavity wall of second cavity.

11. rotary compressors according to claim 4, it is characterised in that the elastic component is at least a portion under normality To the flat pad that the valve element protrudes.

12. rotary compressors according to claim 11, it is characterised in that the flat pad is arranged in the transfiguration When inlet channel is connected with the environment under low pressure of refrigeration system, be pressed between the bottom wall of the valve element and the spool chamber with every Break the spool chamber and the second channel.

13. rotary compressors according to claim 4, it is characterised in that the spool chamber is cylinder cavity, the valve A diameter of d1 of core cavity, the equivalent diameter of the second channel is d2, and the equivalent diameter of the first passage is d3, wherein d2 >= 1mm,d3≥2mm。

14. rotary compressors according to claim 13, it is characterised in that the valve element for cylindric, the valve element A diameter of d4, wherein d1 >=d4+0.1, d4 >=d2+0.5.

15. rotary compressors according to claim 2, it is characterised in that the valve element stopping means is magnetic part, described Magnetic part is arranged on one end away from the transfiguration inlet channel of the cavity wall of the voltage stabilizing cavity volume.

16. rotary compressors according to claim 1, it is characterised in that also including pressure-inducting device, the pressure-inducting device with The refrigeration system is connected, and the pressure-inducting device optionally connects the environment under low pressure of the refrigeration system and the transfiguration is entered Gas passage, or the pressure-inducting device optionally connects the hyperbaric environment of the refrigeration system and the transfiguration air inlet is led to Road.

17. rotary compressors according to claim 1, it is characterised in that also include：Transfiguration slide plate stopping means, it is described Transfiguration slide plate stopping means is used to, when the transfiguration inlet channel is connected with the high-pressure area of the housing, the transfiguration be slided Piece is positioned at the position for the transfiguration piston separate.

18. a kind of refrigeration systems, it is characterised in that including the rotary compressor any one of claim 1-17.