CN219974808U

CN219974808U - Capacity adjustment device and variable capacity scroll compressor

Info

Publication number: CN219974808U
Application number: CN202321290426.6U
Authority: CN
Inventors: 陆志远; 许玉见; 季晓炜
Original assignee: Suzhou Yinghuate Vortex Technology Co ltd
Current assignee: Suzhou Yinghuate Vortex Technology Co ltd
Priority date: 2023-05-25
Filing date: 2023-05-25
Publication date: 2023-11-07
Anticipated expiration: 2033-05-25

Abstract

The utility model discloses a capacity adjusting device and a variable capacity scroll compressor, wherein the capacity adjusting device comprises: the device comprises a fixed scroll, a capacity regulating valve and a control assembly; at least one gas unloading exhaust port and at least one gas discharging exhaust port are arranged on the connecting end face of the fixed scroll, wherein: the gas unloading exhaust port is communicated with an unloading hole in the vortex inner ring area of the fixed vortex disc through an internal channel of the fixed vortex disc, and the gas discharging exhaust port is communicated with a total discharging outlet of the fixed vortex disc through another internal channel of the fixed vortex disc; the capacity control valve is installed in the terminal surface of fixing vortex dish, includes: the capacity adjusting valve seat and the capacity adjusting valve plate form an adjusting cavity between the capacity adjusting valve seat and the connecting end face of the fixed scroll, and the capacity adjusting valve plate is arranged in the adjusting cavity and can be moved and switched between a sealing position and a releasing position. The utility model has simple structure, low cost and convenient assembly, and can change the discharge capacity of the vortex compressor without changing the rotating speed.

Description

Capacity adjustment device and variable capacity scroll compressor

Technical Field

The utility model belongs to the technical field of scroll compressors, and particularly relates to a capacity adjusting device and a variable-capacity scroll compressor.

Background

The capacity adjusting technology of the scroll compressor is generally applied to the scroll compressor with fixed rotation speed, so that the displacement of the compressor can be changed under the condition that the rotation speed is not changed, namely, the refrigerating or heating output capacity of the compressor is changed, the capacity adjusting technology is better suitable for the change of environmental load, the on-off frequency of a unit is reduced, and the purpose of improving the energy efficiency of the unit is achieved. In air conditioning applications, the capacity modulation technique can more precisely control room temperature, improving comfort. The capacity adjustment technology overcomes the defect of fixed displacement of the traditional fixed-rotation-speed compressor, achieves the effect of grading the output capacity, is lower in cost than the variable-frequency scroll compressor, and can replace a variable-frequency scheme under the condition of limited cost budget.

The existing compressor with capacity adjusting function has the defects of complex structure, high cost and the like, and certain capacity adjusting mechanisms comprise more sealing rings and copper pipe lines, so that the reliability of the compressor is greatly reduced.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a capacity adjusting device and a variable capacity scroll compressor.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

in one aspect, the present utility model discloses a capacity adjustment device comprising:

the non-orbiting scroll is provided with at least one gas unloading exhaust port and at least one gas discharging exhaust port on the connecting end face of the non-orbiting scroll, wherein: the gas unloading exhaust port is communicated with at least one unloading hole in the vortex inner ring area of the fixed vortex disc through an internal channel of the fixed vortex disc, the unloading hole is communicated with a compression cavity of the vortex compressor, the gas discharging exhaust port is communicated with at least one total discharging outlet of the fixed vortex disc through another internal channel of the fixed vortex disc, and the gas discharging exhaust port is communicated with a low-pressure cavity of the vortex compressor;

capacity control valve, capacity control valve installs in the terminal surface of connection of deciding the vortex dish, includes: the capacity adjusting valve seat and the capacity adjusting valve plate form an adjusting cavity between the capacity adjusting valve seat and the connecting end surface of the fixed scroll, and the capacity adjusting valve plate is arranged in the adjusting cavity and can be switched between a sealing position and a releasing position in a moving way;

when the capacity adjusting valve plate is at the sealing position, all the gas unloading exhaust ports and all the gas discharging exhaust ports on the connecting end face can be covered by the capacity adjusting valve plate;

when the capacity adjusting valve plate is at the release position, the capacity adjusting valve plate does not cover the gas unloading exhaust port and the gas discharging exhaust port, and the gas unloading exhaust port is communicated with the gas discharging exhaust port;

the control assembly is connected with the capacity adjusting valve seat and used for controlling the capacity adjusting valve plate to move and switch between a sealing position and a releasing position.

The utility model discloses a capacity adjusting device, which arranges a gas unloading exhaust port and a gas discharging exhaust port on the same connecting end face of a fixed scroll, and controls the conduction state of the gas unloading exhaust port and the gas discharging exhaust port by utilizing a capacity adjusting valve.

When the capacity adjusting valve plate is at the sealing position, all gas unloading exhaust ports and all gas discharging exhaust ports on the connecting end face can be covered by the capacity adjusting valve plate, and gas in the vortex inner ring area is prevented from being discharged from the total discharging ports.

When the capacity adjusting valve plate is at the release position, the capacity adjusting valve plate is not covered on the gas unloading exhaust port and the gas discharging exhaust port, the gas unloading exhaust port is communicated with the gas discharging exhaust port, and the gas in the vortex inner ring area is discharged from the total discharging outlet.

The capacity adjusting device has the advantages of simple structure, low cost and convenient assembly.

On the basis of the technical scheme, the following improvement can be made:

preferably, the connection end surface of the fixed scroll is formed in a side surface area of the fixed scroll, and the capacity control valve is attached to a side surface of the fixed scroll.

By adopting the above preferred scheme, on the one hand, the installation of the capacity adjusting valve is more convenient, and on the other hand, the capacity adjusting valve can be rapidly switched between the sealing position and the release position without adding an additional elastic resetting piece or sealing piece, so that the service life and the reliability of the capacity adjusting valve are greatly improved.

As the preferable scheme, the connecting end face of the fixed scroll is also provided with a guide hole, the capacity adjusting valve plate is provided with a guide part, the guide part can shuttle in the guide hole, and the guide part and the guide hole are used for guiding the movement direction of the capacity adjusting valve plate.

By adopting the preferable scheme, the capacity adjusting valve plate is switched between the sealing position and the releasing position more stably, and the capacity adjusting valve plate cannot deviate.

As a preferred solution, all gas unloading vents on the connecting end face can communicate with each other;

and/or;

all the gas discharge ports on the connecting end face can communicate with each other.

By adopting the preferable scheme, the area of the gas discharge flow passage is increased.

Preferably, the fixed scroll includes: the fixed vortex lower half part is fixedly connected with the fixed vortex upper half part;

and a plurality of unloading holes are formed in the vortex inner ring area of the vortex molded line, and an unloading channel used for communicating the unloading holes and the gas unloading exhaust port is formed in the lower half part of the fixed vortex.

By adopting the preferable scheme, the fixed vortex plate is divided into a fixed vortex upper half part and a fixed vortex lower half part, and the fixed vortex plate has reasonable structure.

Preferably, the connecting end of the connecting pipe is spherical, and a notch for placing the sealing element is arranged at a position close to the connecting end.

By adopting the preferable scheme, the connecting pipe is ingenious in structure, the ball-shaped connecting end stretches into the connecting port and can float freely and axially, no extra stress is generated, and the sealing piece is utilized for further sealing, so that the air leakage phenomenon can not occur.

As a preferable scheme, a first connecting port and a second connecting port are arranged on the capacity adjusting valve seat, the first connecting port is communicated with a high-pressure taking port or a high-pressure cavity area of the fixed scroll, and the second connecting port is communicated with the adjusting cavity;

wherein: the high-pressure taking port is also arranged on the connecting end face of the fixed scroll and is communicated with the high-pressure cavity area through an internal channel of the high-pressure taking port for taking high pressure.

By adopting the preferable scheme, the capacity adjusting valve seat is simple in structure and convenient to install.

Preferably, the control assembly includes: the electromagnetic valve seat and the electromagnetic valve body are connected with the electromagnetic valve seat, a third connecting port, a fourth connecting port and a low-pressure taking port are arranged on the electromagnetic valve seat, and the third connecting port and the fourth connecting port are respectively communicated with the first connecting port and the second connecting port of the capacity adjusting valve seat through connecting pipes;

the electromagnetic valve body is used for controlling the second connecting port to be switched between being communicated with the low-pressure taking port and being communicated with the first connecting port.

By adopting the preferable scheme, the control assembly is simple in structure and can realize the rapid control of the capacity regulating valve.

As an optimized scheme, the electromagnetic valve seat is also provided with an interface A, an interface B and an interface C which are mutually independent, and the electromagnetic valve body is provided with an interface a, an interface B and an interface C which are in one-to-one correspondence with the interfaces A, B and C;

the interface A is communicated with the low-pressure taking port, the interface B is communicated with the third connecting port, and the interface C is communicated with the fourth connecting port;

when the electromagnetic valve body is in an electrified state, the interface c is communicated with the interface b, and the interface c is not communicated with the interface a;

when the solenoid valve body is in a power-off state, the interface c is communicated with the interface a, and the interface c is not communicated with the interface b.

By adopting the preferable scheme, the electromagnetic valve seat and the electromagnetic valve body have simple structures.

In addition, in another aspect, the present utility model also discloses a variable capacity scroll compressor, including: any of the above capacity modulation devices.

The scroll compressor disclosed by the utility model can change the discharge capacity of the scroll compressor without changing the rotating speed, namely, the refrigerating or heating output capacity of the scroll compressor is changed, so that the scroll compressor is better suitable for the change of environmental load, the start-stop frequency of a unit is reduced, and the purpose of improving the energy efficiency of the unit is achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an exploded view of a non-orbiting scroll provided by an embodiment of the present utility model.

Fig. 2 is a schematic structural view of an upper half (lower end face side) of a fixed vortex according to an embodiment of the present utility model.

Fig. 3 is a schematic structural view of an upper half (upper end face side) of a fixed vortex according to an embodiment of the present utility model.

Fig. 4 is a schematic structural diagram of a capacity adjusting valve seat according to an embodiment of the present utility model.

Fig. 5 is a schematic structural diagram of a capacity adjusting valve plate in a sealing position according to an embodiment of the present utility model.

Fig. 6 is a schematic structural diagram of a capacity adjusting valve plate in a release position according to an embodiment of the present utility model.

Fig. 7 is a schematic structural diagram of a capacity adjusting valve plate according to an embodiment of the present utility model.

Fig. 8 is a schematic structural diagram of a connection end face with a communication groove according to an embodiment of the present utility model.

Fig. 9 is a schematic structural view of a non-orbiting scroll (having 2Y-shaped gas discharge grooves) according to an embodiment of the present utility model.

Fig. 10 is a schematic structural diagram of a connection pipe according to an embodiment of the present utility model.

Fig. 11 is a schematic structural diagram of a valve seat of a solenoid valve according to an embodiment of the present utility model.

Fig. 12 is a schematic structural diagram of a solenoid valve body according to an embodiment of the present utility model.

Fig. 13 is a schematic structural view of a scroll compressor according to an embodiment of the present utility model.

Fig. 14 is a cross-sectional view of a scroll compressor provided by an embodiment of the present utility model.

Fig. 15 is a schematic structural diagram of a connection end face with a groove according to an embodiment of the present utility model.

Wherein: 1-non-orbiting scroll, 10-connecting end face, 101-gas unloading vent, 102-gas discharging vent, 103-pilot hole, 104-communicating groove, 105-high pressure taking port, 106-pin hole, 107-bolt hole, 11-total discharging port, 12-groove, 131-non-orbiting scroll lower half, 132-non-orbiting scroll upper half, 14-unloading hole, 15-gas discharging groove, 16-back pressure hole, 17-circular boss, 18-scroll vent, 19-advance vent, 110-back pressure connecting channel, 111-back pressure cavity groove, 112-O-shaped ring groove, 2-capacity adjusting valve, 21-capacity adjusting valve seat, 211-first connecting port, 212-second connecting port, 22-capacity adjusting valve plate, 221-guide part, 222-disc-shaped valve plate, 223-cylindrical valve plate, 23-adjusting chamber, 3-control component, 31-solenoid valve seat, 311-flange end face, 312-low pressure tap, 313-third connection port, 314-fourth connection port, 32-solenoid valve body, 4-connection pipe, 41-connection end, 42-notch, 5-copper pipe, 61-housing, 62-stator component, 63-rotor component, 64-movable scroll, 65-main bearing component, 66-base bearing component, 67-silencing cover component, 68-base cover component, 69-top cover component, 610-cross slide ring, 611-floating seal disk, 612-O-ring, 71-unidirectional valve plate, 72-valve plate.

Detailed Description

Preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The use of ordinal terms "first," "second," "third," etc., to describe a generic object merely denotes different instances of like objects, and is not intended to imply that the objects so described must have a given order, either temporally, spatially, in ranking, or in any other manner.

In addition, the expression "comprising" an element is an "open" expression which merely means that there is a corresponding component or step and should not be interpreted as excluding the existence of additional components or steps.

In order to achieve the object of the present utility model, in some embodiments of a capacity modulation device and a variable capacity scroll compressor, as shown in fig. 1 to 6 and 14, the capacity modulation device includes: a fixed scroll 1, a capacity modulation valve 2 and a control assembly 3.

The connection end surface 10 of the fixed scroll 1 is provided with 2 gas discharge ports 101 and 2 gas discharge ports 102, wherein: the gas unloading exhaust port 101 is communicated with 8 unloading holes 14 in the vortex inner ring area of the fixed vortex disc 1 through the internal passage of the fixed vortex disc 1, the gas discharging exhaust port 102 is communicated with 1 total discharging port 11 through the other internal passage of the fixed vortex disc 1, and the connecting end face 10 of the fixed vortex disc 1 is a plane.

The unloading hole 14 is communicated with a compression cavity of the scroll compressor, and the total discharge outlet 11 is communicated with a low-pressure cavity of the scroll compressor.

The capacity control valve 2 is attached to a connection end surface 10 of the fixed scroll 1, and includes: a capacity adjusting valve seat 21 and a capacity adjusting valve plate 22, wherein an adjusting chamber 23 is formed between the capacity adjusting valve seat 21 and the connecting end surface 10 of the fixed scroll 1, and the capacity adjusting valve plate 22 is arranged in the adjusting chamber 23 and can be moved and switched between a sealing position and a releasing position;

when the capacity adjusting valve plate 22 is in the sealing position, it can entirely cover all the gas unloading exhaust ports 101 and all the gas discharging exhaust ports 102 on the connecting end face 10;

when the capacity modulation valve plate 22 is in the release position, it does not cover the gas unloading vent 101 and the gas release vent 102, and the gas unloading vent 101 communicates with the gas release vent 102.

The control assembly 3 is connected with the capacity adjusting valve seat 21 through a connecting pipe 4 for controlling the capacity adjusting valve plate 22 to move and switch between a sealing position and a releasing position.

The utility model discloses a capacity adjusting device, which arranges a gas unloading exhaust port 101 and a gas discharging exhaust port 102 on the same connecting end face 10 of a fixed scroll 1, and controls the conduction state of the gas unloading exhaust port 101 and the gas discharging exhaust port 102 by a capacity adjusting valve 2.

When the capacity adjustment valve plate 22 is in the sealing position, it can fully cover all of the gas discharge ports 101 and all of the gas discharge ports 102 on the connection end face 10, preventing the gas in the scroll inner ring region from being discharged from the total discharge port 11.

When the capacity adjusting valve plate 22 is at the release position, it does not cover the gas unloading vent 101 and the gas discharging vent 102, the gas unloading vent 101 communicates with the gas discharging vent 102, and the gas in the vortex inner ring region is discharged from the total discharging port 11.

The capacity adjusting valve plate 22 is a metal valve plate, and is not provided with nonmetal sealing elements such as an O-shaped ring, so that the service life and reliability of the capacity adjusting valve 2 are greatly improved.

It is also noted that the fixed scroll 1 of the above embodiment has 1 connection end face 10 and 1 capacity adjustment valve 2, but the number of connection end faces 10 is not limited to 1, and may be 2, 3, or the like, with the corresponding capacity adjustment valve 2 being installed at each connection end face 10. Further, when there are a plurality of capacity modulation valves 2, a connection pipe may be used to communicate the modulation chambers 23 of all the capacity modulation valves 2, so that the plurality of capacity modulation valves 2 can be controlled simultaneously.

In other embodiments, the space between the capacity modulation valve seat 21 and the connection end surface 10 of the fixed scroll 1 is sealed by a sealing gasket.

In other embodiments, a recess 12 is provided in the connecting end surface 10 of the fixed scroll 1, and the recess 12 covers all the gas discharge ports 101 and all the gas discharge ports 102 to form the regulation chamber 23, as shown in fig. 15.

In order to further optimize the effect of the present utility model, in other embodiments, the remaining feature techniques are the same, except that the connection end surface 10 of the non-orbiting scroll 1 is on a side surface area of the non-orbiting scroll 1, and the capacity adjustment valve 2 is horizontally installed on a side surface of the non-orbiting scroll 1.

By adopting the above preferred scheme, on the one hand, the installation of the capacity adjusting valve 2 is more convenient, and on the other hand, the capacity adjusting valve 2 can be rapidly switched between the sealing position and the release position without adding an additional elastic resetting piece or sealing piece, thereby greatly improving the service life and the reliability of the capacity adjusting valve 2.

In order to further optimize the implementation effect of the present utility model, in other embodiments, the other features are the same, except that a guide hole 103 is further provided on the connection end surface 10 of the fixed scroll 1, a guide part 221 is provided on the capacity adjustment valve plate 22, the guide part 221 can shuttle in the guide hole 103, and the guide part 221 and the guide hole 103 are used for guiding the movement direction of the capacity adjustment valve plate 22.

With the above preferred arrangement, the displacement regulating valve plate 22 is more stable in switching between the sealing position and the release position, and the displacement regulating valve plate 22 does not shift. Wherein, capacity adjustment valve block 22 is T shape valve block, specifically includes: a disc-shaped valve plate 222 and a guide 221. The T-shaped valve plate can be integrally processed, or can be formed by riveting or interference pressing a round disc with a hole and a guide rod in a split connection mode.

Of course, in other embodiments, the guiding hole 103 on the fixed scroll 1 may be omitted, and the guiding may be performed by using the self structure of the capacity adjusting valve plate 22, for example: the capacity adjusting valve plate 22 is a cylindrical valve plate 223 having a relatively thick thickness, as shown in fig. 7.

In order to further optimize the effect of the present utility model, in other embodiments, the remaining feature techniques are the same, except that all the gas discharge ports 101 on the connecting end face 10 can communicate with each other through the communication grooves 104; and all the gas discharge ports 102 on the connection end face 10 can communicate with each other through the communication groove 104.

By adopting the preferable scheme, the area of the gas discharge flow passage is increased. In this embodiment, the communication groove 104 is a C-shaped groove, as shown in fig. 8.

In order to further optimize the implementation of the present utility model, in other embodiments, the remaining feature techniques are the same, except that the non-orbiting scroll 1 includes: a fixed vortex lower half 131 with a vortex molded line and a fixed vortex upper half 132 with a connecting end surface 10, wherein the fixed vortex lower half 131 is fixedly connected with the fixed vortex upper half 132;

8 symmetrically distributed unloading holes 14 are arranged in the vortex inner ring area of the vortex molded line, and an unloading channel used for communicating the unloading holes 14 with the gas unloading exhaust port 101 is arranged in the lower half 131 of the fixed vortex.

By adopting the preferable scheme, the fixed scroll 1 is divided into a fixed scroll upper half 132 and a fixed scroll lower half 131, and the fixed scroll 1 has a reasonable structure.

Further, 2 gas discharge ports 101 are arranged side by side at the position of the upper half 132 of the fixed vortex close to the lower end face thereof, and 2 gas discharge ports 102 are arranged side by side above the 2 gas discharge ports 101, and the total discharge port 11 is arranged at the upper end face of the upper half 132 of the fixed vortex.

The lower half 131 of the fixed vortex is provided with a vortex molded line, and the lower half 131 of the fixed vortex is provided with 8 symmetrically arranged unloading holes 14, the positions of which are positioned in the area of the inner ring of the vortex. The unloading hole 14 is used for timely exhausting gas in the vortex inner ring area when the vortex compressor works, so that the partial molded line of the outermost ring of the vortex does not generate compression effect, the vortex displacement is reduced, and the purpose of capacity adjustment is achieved.

Wherein, the upper part 132 of the fixed vortex has a ring structure, and two gas discharge grooves 15 (i.e. discharge channels) are arranged on the lower end surface of the upper part, and the positions of the upper part just cover the 8 discharge holes 14 of the lower part of the fixed vortex, so that the discharge holes 14 on two sides are respectively communicated with the gas discharge grooves 15.

In other embodiments, the number of the unloading holes 14 may be 4, 6, 10, 12, etc., and the diameter and position thereof may be adjusted within a certain range, depending on the capacity adjustment ratio, the smaller the capacity adjustment ratio, the larger the number of the unloading holes 14 required, and the larger the diameter.

In other embodiments, as shown in fig. 9, the number of the unloading holes 14 is increased to 2 pairs of unloading holes 14; the fixed vortex upper half 132 is provided with 2Y-shaped gas discharge grooves 15 corresponding to 2 pairs of unloading holes 14, and capacity adjustment capability is improved.

In order to further optimize the effect of the present utility model, in other embodiments, the remaining feature techniques are the same, except that, as shown in fig. 10, the connection end 41 of the connection pipe 4 is spherical, and a notch 42 for placing a sealing member is provided at a position close to the connection end 41.

By adopting the preferable scheme, the connecting pipe 4 is ingenious in structure, the spherical connecting end 41 stretches into the connecting port and can float freely and axially, no extra stress is generated, and the sealing piece is utilized for further sealing, so that the air leakage phenomenon can not occur. While allowing some assembly error between the capacity modulation valve seat 21 and the solenoid valve seat 31, i.e., misalignment of the two. The connection tube 4 may be a flexible connection tube 4.

Specifically, the connection pipe 4 may be arranged laterally or longitudinally as shown in fig. 13.

In order to further optimize the implementation effect of the present utility model, in other embodiments, the other features are the same, except that, as shown in fig. 4, a first connection port 211 and a second connection port 212 are provided on the capacity modulation valve seat 21, the first connection port 211 is communicated with the high pressure taking port 105 of the fixed scroll 1 through the taking port 213 thereof, and the second connection port 212 is communicated with the modulation chamber 23;

wherein: the high-pressure intake port 105 is also provided on the connection end surface 10 of the fixed scroll 1, and communicates with a high-pressure chamber region (e.g., the scroll exhaust port 18) through its internal passage for taking in high pressure.

By adopting the preferable scheme, the capacity adjusting valve seat 21 is simple in structure and convenient to install. In other embodiments, the valve seat of the capacity modulation valve 2 comprises: a first valve seat and a second valve seat that are independent of each other; the first connection port 211 is disposed on the first valve seat, and the second connection port 212 is disposed on the second valve seat. In other embodiments, the first connection port 211 may directly communicate with the high pressure chamber region of the non-orbiting scroll 1.

Further, as shown in fig. 11 to 12, the control assembly 3 includes: the electromagnetic valve seat 31 and the electromagnetic valve body 32 connected with the electromagnetic valve seat 31, the electromagnetic valve body 32 is arranged on the flange end face 311 of the electromagnetic valve seat 31, a third connecting port 313, a fourth connecting port 314 and a low-pressure taking port 312 are arranged on the electromagnetic valve seat 31, and the third connecting port 313 and the fourth connecting port 314 are respectively communicated with the first connecting port 211 and the second connecting port 212 of the capacity adjusting valve seat 21 through connecting pipes 4;

the solenoid valve body 32 is used to control the second connection port 212 to switch between communication with the low pressure tap port 312 and communication with the first connection port 211.

By adopting the preferable scheme, the control assembly 3 has a simple structure, and can realize the rapid control of the capacity regulating valve 2. The solenoid valve seat 31 is fixed to the casing 61 of the scroll compressor by welding or the like.

Further, the electromagnetic valve seat 31 is also provided with an interface A, an interface B and an interface C which are mutually independent, and the electromagnetic valve body 32 is provided with an interface a, an interface B and an interface C which are in one-to-one correspondence with the interfaces A, B and C;

interface a communicates with the low pressure tap 312, interface B communicates with the third connection port 313, and interface C communicates with the fourth connection port 314;

in the energized state of the solenoid valve body 32, the interface c is communicated with the interface b, and the interface c is not communicated with the interface a;

in the solenoid valve body 32 in the power-off state, the port c communicates with the port a, and the port c does not communicate with the port b.

By adopting the preferable scheme, the electromagnetic valve seat 31 and the electromagnetic valve body 32 have simple structures.

In some embodiments, the solenoid valve seat 31 and the solenoid valve body 32 may be connected by a copper tube 5, as shown in fig. 13.

The solenoid valve body 32 is a two-position three-way solenoid valve, comprises a valve body and a coil, and is connected with the scroll compressor through a flange, and the flange is sealed by a sealing gasket.

In addition, the embodiment of the utility model also discloses a variable capacity scroll compressor, which comprises the following components: the capacity modulation device as disclosed in any one of the above embodiments.

As shown in fig. 14, the lower scroll compressor is specifically described as including: housing 61, stator assembly 62, rotor assembly 63, orbiting scroll 64, main bearing assembly 65, base bearing assembly 66, sound damping cap assembly 67, base cap assembly 68, and top cap assembly 69. Orbiting scroll 64 meshes with non-orbiting scroll 1 to form a series of symmetrical compression chambers.

Wherein, decide vortex dish 1 includes: fixed scroll upper half 132 and fixed scroll lower half 131 connected by a fixing bolt.

Further, a vortex molded line is arranged on the fixed vortex lower half 131, and 8 symmetrically arranged unloading holes 14 are arranged on the fixed vortex lower half 131 and are positioned in the vortex inner ring area.

Further, the fixed scroll lower half 131 is provided with a back pressure hole 16 penetrating the fixed scroll in the axial direction. The upper end face of the lower half 131 of the fixed vortex is provided with a circular boss 17, the circular boss 17 is provided with a vortex exhaust port 18 and 2 advance exhaust ports 19, the advance exhaust ports 19 are provided with a one-way valve plate 71 and a valve plate 72, and the action of the advance exhaust ports 19 is that when the compression ratio of the vortex is larger than the pressure ratio of external exhaust and suction, the valve plate of the advance exhaust ports 19 is opened, so that the compression cavity is compressed to the advance exhaust ports 19 to exhaust, the phenomenon of over-compression of the vortex is avoided, and the energy efficiency of the vortex is improved.

Further, key grooves for connecting the cross slip ring 610 are provided at both sides of the fixed scroll lower half 131.

The upper part 132 of the fixed vortex has a ring structure, and two gas discharge grooves 15 (i.e. discharge channels) are arranged on the lower end surface of the upper part, and the positions of the two gas discharge grooves just cover 8 discharge holes 14 of the lower part of the fixed vortex, so that the discharge holes 14 on two sides are respectively communicated with the gas discharge grooves 15.

Further, a back pressure connection passage 110 communicating with the back pressure hole 16 is further provided on the fixed scroll upper half 132. The upper end surface of the fixed vortex upper half 132 is provided with a back pressure chamber groove 111, and the back pressure chamber groove 111 communicates with the back pressure connecting passage 110. The back pressure chamber groove 111 and the floating seal plate 611 form a back pressure chamber, and provide axial pressure to the fixed scroll 1 to compress the fixed scroll 64, thereby avoiding axial leakage.

Further, the back pressure connection passage 110 of the upper half 132 of the fixed scroll is provided with a stepped hole, so that the communication effect between the back pressure connection passage 110 and the back pressure hole 16 is prevented from being affected by the non-concentricity of the two due to the assembly error.

Further, the inner ring portion of the upper portion 132 of the non-orbiting scroll is provided with an O-ring groove 112 for placing an O-ring 612, so as to improve the connection tightness between the upper portion 132 of the non-orbiting scroll and the lower portion 131 of the non-orbiting scroll, and prevent the high-pressure gas of the exhaust portion of the non-orbiting scroll from leaking between the upper and lower portions of the non-orbiting scroll. Of course, the upper part 132 of the fixed scroll and the lower part 131 of the fixed scroll may be sealed by a sealing gasket to prevent the leakage of high pressure gas at the junction surface of the upper and lower parts.

The connecting end face 10 is arranged on the upper half 132 of the fixed vortex, and 2 gas unloading exhaust ports 101, 2 gas discharging exhaust ports 102, 1 high-pressure taking port 105, 1 guide hole 103, a plurality of pin holes 106 and a plurality of bolt holes 107 are arranged on the connecting end face 10, wherein the pin holes 106 are used for placing pins so as to position the capacity adjusting valve seat 21; the bolt hole 107 is used to fix the capacity adjusting valve seat 21.

The high-pressure intake port 105 may be in communication with the back pressure chamber, and may not be in communication with the swirl exhaust port 18, thereby achieving the same effect.

The capacity modulation principle of the scroll compressor of the present utility model will be described, and the scroll compressor has two modes: full-load mode and half-load mode.

Full load mode: in the operation process of the scroll compressor, the unit control panel controls the electromagnetic valve 32 to be electrified, the interface c of the electromagnetic valve 32 is communicated with the interface b, and high-pressure gas communicated with the high-pressure taking port 105 passes through the following route: the first connection port 211, the connection pipe 4, the third connection port 313, the connection port B, the solenoid valve 32 connection port c, the fourth connection port 314, the connection pipe 4, the second connection port 212, and the regulating chamber 23 of the capacity regulating valve 2.

Because the inner side of the capacity adjusting valve plate 22 is at medium-low pressure and the outer side is at high pressure, the valve plate moves to a sealing position under the action of pressure difference, all the gas unloading exhaust ports 101 and all the gas discharging exhaust ports 102 are covered and pressed tightly, and sealing is formed, so that the gas unloading exhaust ports and the gas discharging exhaust ports cannot be communicated with each other. The discharge port 14 is not capable of discharging the gas in the compression chamber to the scroll, and the scroll displacement is maintained at 100% while the compressor is operated at 100% capacity.

Half load mode: in the operation process of the scroll compressor, the unit control panel controls the electromagnetic valve 32 to be powered off, the interface c of the electromagnetic valve 32 is communicated with the interface a, and low-pressure gas in the shell 61 communicated with the low-pressure taking port 312 passes through the following route: the low pressure tap 312-interface a-solenoid valve 32 interface c-fourth connection port 314-connecting tube 4-second connection port 212, enters the regulating chamber 23 of the capacity regulating valve 2.

Because the inner side of the capacity adjusting valve plate 22 is at medium-low pressure, the outer side is at low pressure, the valve plate moves to a release position under the action of pressure difference and air flow, and the air unloading exhaust port 101 and the air discharging exhaust port 102 are communicated with each other. The unloading hole 14 now passes the gas in the compression chamber through the following route: the unloading channel, the gas unloading exhaust port 101, the gas discharging exhaust port 102 and the total discharging port 11 discharge the vortex, so that the vortex forms ineffective compression in the range of the initial section of line suction, the effective line length of the vortex is shortened, the discharge capacity is reduced to about 65%, and the compressor runs at 65% capacity.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

While the basic principles and main features of the present utility model and advantages of the present utility model have been shown and described, it will be understood by those skilled in the art that the present utility model is not limited by the foregoing embodiments, which are described in the foregoing specification merely illustrate the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined in the appended claims and their equivalents.

The control mode of the utility model is controlled by manually starting and closing the switch, the wiring diagram of the power element and the supply of the power supply are common knowledge in the field, and the utility model is mainly used for protecting the mechanical device, so the utility model does not explain the control mode and the wiring arrangement in detail.

Claims

1. A capacity adjustment device, comprising:

the fixed scroll is provided with at least one gas unloading exhaust port and at least one gas discharging exhaust port on the connecting end face of the fixed scroll, wherein: the gas unloading exhaust port is communicated with at least one unloading hole in the vortex inner ring area of the fixed vortex disc through an internal channel of the fixed vortex disc, the unloading hole is communicated with a compression cavity of the vortex compressor, the gas discharging exhaust port is communicated with at least one total discharging port of the fixed vortex disc through another internal channel of the fixed vortex disc, and the gas discharging exhaust port is communicated with a low-pressure cavity of the vortex compressor;

the capacity control valve, the capacity control valve install in the terminal surface of connection of fixed vortex dish includes: the capacity adjusting valve seat and the capacity adjusting valve plate form an adjusting cavity between the capacity adjusting valve seat and the connecting end surface of the fixed scroll, and the capacity adjusting valve plate is arranged in the adjusting cavity and can be switched between a sealing position and a releasing position in a moving way;

when the capacity adjusting valve plate is at the sealing position, all the gas unloading exhaust ports and all the gas discharging exhaust ports on the connecting end face can be covered;

when the capacity adjusting valve plate is at the release position, the capacity adjusting valve plate is uncovered on the gas unloading exhaust port and the gas discharging exhaust port, and the gas unloading exhaust port is communicated with the gas discharging exhaust port;

and the control assembly is connected with the capacity adjusting valve seat and used for controlling the capacity adjusting valve plate to move and switch between a sealing position and a release position.

2. The capacity modulation device as recited in claim 1, wherein the connection end surface of the fixed scroll is on a side surface area of the fixed scroll, and the capacity modulation valve is mounted on a side surface of the fixed scroll.

3. The capacity modulation device as set forth in claim 1, further comprising a guide hole provided in a connection end surface of the fixed scroll, wherein the capacity modulation valve plate is provided with a guide portion capable of moving in the guide hole, and the guide portion and the guide hole are used for guiding a movement direction of the capacity modulation valve plate.

4. The capacity modulation device of claim 1, wherein all gas unloading vents on the connecting end face are capable of communicating with each other;

and/or;

all the gas discharge ports on the connection end face can communicate with each other.

5. The capacity modulation device of claim 1, wherein the non-orbiting scroll comprises: the fixed vortex lower half part is fixedly connected with the fixed vortex upper half part;

6. The capacity modulation device as recited in claim 1, wherein the control assembly is connected to the capacity modulation valve seat through a connecting tube having a spherical connecting end, and a notch for placing a sealing member is provided at a position close to the connecting end.

7. The capacity modulation device as claimed in claim 1, wherein a first connection port and a second connection port are provided on the capacity modulation valve seat, the first connection port is communicated with a high pressure taking port or a high pressure chamber area of the non-orbiting scroll, and the second connection port is communicated with the modulation chamber;

8. The capacity modulation device of claim 7, wherein the control assembly comprises: the electromagnetic valve seat and the electromagnetic valve body are connected with the electromagnetic valve seat, a third connecting port, a fourth connecting port and a low-pressure taking port are arranged on the electromagnetic valve seat, and the third connecting port and the fourth connecting port are respectively communicated with the first connecting port and the second connecting port of the capacity adjusting valve seat through connecting pipes;

9. The capacity adjusting device according to claim 8, wherein the electromagnetic valve seat is further provided with an interface A, an interface B and an interface C which are mutually independent, and the electromagnetic valve body is provided with an interface a, an interface B and an interface C which are in one-to-one correspondence with the interfaces A, B and C;

under the state of power failure of the solenoid valve body, the interface c is communicated with the interface a, and the interface c is not communicated with the interface b.

10. A variable capacity scroll compressor comprising: a capacity modulation device as claimed in any one of claims 1 to 9.