CN109185159B - Air suction port switching device and rotor type compressor - Google Patents
Air suction port switching device and rotor type compressor Download PDFInfo
- Publication number
- CN109185159B CN109185159B CN201811274356.9A CN201811274356A CN109185159B CN 109185159 B CN109185159 B CN 109185159B CN 201811274356 A CN201811274356 A CN 201811274356A CN 109185159 B CN109185159 B CN 109185159B
- Authority
- CN
- China
- Prior art keywords
- suction port
- air suction
- compressor
- control system
- switching device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/10—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
- F04C28/12—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention provides an air suction port switching device and a rotor type compressor, relates to the technical field of compressors, and solves the technical problem that the air suction amount of the compressor is reduced due to the existence of a front edge angle of an air suction port in the prior art. The air suction opening and closing device comprises an electrically connected switching mechanism and a control system, and the power on and power off of the control system is controlled by a sliding vane of the compressor. A switch mechanism capable of controlling the opening and closing of the air suction port is additionally arranged on the air suction port of the air cylinder of the compressor, when the air suction port of the air cylinder of the compressor is exhausted, the rotor is positioned at the uppermost position, the tangential point T of the air cylinder and the rotor is positioned at the top point of the inner wall of the air cylinder, the sliding vane is also positioned at the uppermost end, one end of the sliding vane, which is far away from the rotor, triggers the control system to be electrified, further the air suction port of the air cylinder is closed, the backflow of air in the air suction cavity is avoided, the air suction amount of the compressor is increased, and therefore the performance of the compressor is improved.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to an air suction port switching device and a rotor type compressor.
Background
The existing compressor mainly comprises a cylinder, a crankshaft, rollers, sliding sheets and upper and lower flanges, wherein the rollers are arranged on the crankshaft and rotate along with the crankshaft, the outer circle of each roller rolls along the inner wall of the cylinder and forms a crescent working cavity with the cylinder, two ends of each crescent working cavity are sealed by the upper and lower flanges to form the working cavity of the compressor, the sliding sheets divide the crescent working cavity into two parts, the part communicated with an air suction port is called an air suction cavity, and the part communicated with an air exhaust port is called a compression cavity. By usingIndicating the rotation angle of the roller, wherein the tangent point T between the cylinder and the roller is at the vertex of the inner wall of the cylinder when the roller is at the uppermost position, and the tangent point T is the rotation angle of the rollerDegree, when the tangential point T is located at the end of the suction portReferred to as the suction port leading edge angle a, see fig. 1. The existing rotor compressors all have the front edge angle of the air suction port, and the existence of the front edge angle can cause the sucked air to flow back to the air suction port before the compression process starts, so that the suction amount is reduced, and the performance of the compressor is reduced. The shaded portion of fig. 2 shows the suction amount of the conventional rotor compressor.
Disclosure of Invention
The invention aims to provide an air suction port switching device and a rotor type compressor, which are used for solving the technical problem that the air suction amount of the compressor is reduced due to the existence of the front edge angle of an air suction port in the prior art. The preferred technical solutions of the technical solutions provided by the present invention can produce a plurality of technical effects described below.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides an air suction port switching device, comprising:
a switching mechanism capable of opening and closing an air suction port of the compressor;
The control system is electrically connected with the switch mechanism and used for controlling the switch mechanism, and the power-on and power-off of the control system are controlled by a sliding vane of the compressor; when the sliding vane moves to the top of the stroke, the control system is triggered to be electrified to close the air suction port, and when the sliding vane moves down to the height corresponding to the front edge angle a of the air suction port, the control system is powered off to open the air suction port.
Optionally, the control system includes:
the trigger circuit is electrically connected with the switch mechanism and controls the action of the switch mechanism;
a contact switch located in the trigger circuit, the closing or opening of the contact switch controlling the closing or opening of the trigger circuit; and the contact switch is arranged at the top end of the sliding vane movement stroke, when the sliding vane reaches the top end, the contact switch is closed, and when the sliding vane moves down to the height corresponding to the front edge angle a of the air suction port, the contact switch is opened.
Optionally, the contact switch is a relay.
Optionally, the relay is a time relay, an electromagnetic relay or a limit switch.
Optionally, the contact switch is mechanically triggered.
Optionally, the radial distance h from one end of the sliding vane contacting the rotor to the cylinder of the compressor is greater than R (1-cosa), wherein R is the radius of the cylinder, and a is the front edge angle of the air suction port.
Optionally, the switching mechanism includes a driver electrically connected with the control system.
Optionally, the switch mechanism further comprises an electric door, and the driver is in transmission connection with the electric door.
Optionally, the size of the electric door is adapted to the size of the air suction port.
The invention provides a rotor type compressor, which comprises a sliding vane and any air suction port switching device.
The air suction opening switching device and the rotor type compressor provided by the invention have the advantages that the power-on and power-off of the control system are automatically controlled through the movement of the sliding vane of the compressor, and the action of the switching mechanism is further controlled to close or open the air suction opening of the compressor, so that the control system is just powered on when the rotor rotates within the range of the front edge angle of the air suction opening, the switching mechanism closes the air suction opening, the backflow of air sucked by the compressor to the air suction opening when the compressor starts to compress is avoided, the air suction amount is improved, and the performance of the compressor is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a prior art compressor, with arrows indicating the direction of air flow;
FIG. 2 is a schematic view of a prior art compressor, with the shaded portion representing the suction capacity;
Fig. 3 is a schematic structural view of an air suction opening and closing device and a rotor type compressor according to an embodiment of the present invention;
FIG. 4 is a schematic view showing a structure of a rotor type compressor according to an embodiment of the present invention, in which a hatched portion represents an intake amount;
fig. 5 shows a schematic structure of the slide after the slide is separated from the relay.
1, A cylinder; 2. a roller; 3. a sliding sheet; 4. and a relay.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
As shown in fig. 3 to 5, the present invention provides an air suction opening and closing apparatus including:
a switching mechanism capable of opening and closing an air suction port of the compressor;
The control system is electrically connected with the switch mechanism and used for controlling the switch mechanism, and the power-on and power-off of the control system are controlled by the sliding vane 3 of the compressor; when the sliding vane 3 moves and rises to the top end of the stroke, the control system is triggered to electrify and close the air suction port, and when the sliding vane 3 moves downwards to pass through the height corresponding to the front edge angle a of the air suction port, the control system is controlled to cut off the power to open the air suction port.
A switch mechanism capable of controlling the opening and closing of the air suction port is additionally arranged on the air suction port of the compressor cylinder 1, when the air suction port of the compressor is exhausted, the rotor is at the uppermost position, the tangential point T of the cylinder 1 and the rotor is at the top of the inner wall of the cylinder 1, the sliding vane 3 is also at the uppermost end, one end of the sliding vane 3 far away from the rotor triggers the control system to electrify, so that the air suction port of the cylinder 1 is closed, the air backflow in an air suction cavity is avoided, the air suction quantity of the compressor is increased, and the performance of the compressor is improved. The increased inspiration is seen in fig. 4.
As an alternative embodiment, the control system includes:
the trigger circuit is electrically connected with the switch mechanism and controls the action of the switch mechanism;
a contact switch located in the trigger circuit, the closing or opening of the contact switch controlling the closing or opening of the trigger circuit; and the contact switch is arranged at the top end of the movement stroke of the sliding vane 3, when the sliding vane 3 reaches the top end, the contact switch is closed, and when the sliding vane 3 moves down to pass through the front edge angle a of the suction port to be at a height corresponding to the front edge angle a, the top end of the sliding vane 3 is separated from the contact switch, and the contact switch is opened.
The trigger circuit is automatically controlled to be closed and opened by the movement of the sliding vane 3 of the compressor, so that the air suction port of the compressor is closed or opened by controlling the action of the switching mechanism, the control system is just electrified when the rotor rotates within the range of the front edge angle a of the air suction port, the air suction port is closed by the switching mechanism, the backflow of air sucked by the compressor to the air suction port when the compressor starts to compress is avoided, the air suction amount is improved, and the performance of the compressor is improved.
The contact switch in the trigger circuit is arranged at the top end of the movement stroke of the sliding vane 3, and the contact switch is closed when the sliding vane 3 moves to the top end.
As an alternative embodiment, the contact switch is a relay 4.
The relay 4 is used as a contact switch, and the relay 4 is triggered by the movement of the sliding sheet 3 to realize the on-off of a trigger circuit.
As an alternative embodiment, the relay 4 is a time relay, an electromagnetic relay or a limit switch.
The electromagnetic relay comprises a low-voltage control circuit and a high-voltage working circuit, and the sliding sheet 3 controls the opening and closing of the low-voltage control circuit.
As an alternative embodiment, the control system is de-energized when the slide 3 contacts the end of the rotor at a radial distance h > R (1-cosa) from the compressor cylinder 1, where R is the cylinder 1 radius and a is the suction port leading edge angle.
When h=r (1-cosa), the rotor is just at the suction port front edge angle, and after passing the suction port front edge angle, the suction port is blocked by the roller, so that no air backflow is generated, and the suction port is not required to be closed.
As an alternative embodiment, the contact switch is mechanically triggered.
The contact switch is of a mechanical triggering type, and is convenient to directly control through the sliding sheet 3.
As an alternative embodiment, the switching mechanism comprises a driver, which is electrically connected to the control system.
The switch mechanism comprises a driver electrically connected with the control system, so that the automatic control is convenient.
As an alternative embodiment, the switching mechanism further comprises an electrically operated gate, and the driver is in driving connection with the electrically operated gate.
The electric door is in transmission connection with the output shaft of the driver, so that the electric door can be quickly closed and opened, and the reaction is quick.
As an alternative embodiment, the size of the electric door is adapted to the size of the suction port.
The invention provides a rotor type compressor, which comprises a sliding vane 3 and any air suction port switching device.
The sliding vane 3 is installed in the sliding vane groove of cylinder 1, the bottom of sliding vane 3 contacts with the roller 2 as the rotor, and the roller 2 rolls and makes reciprocating motion in cylinder 1 inner wall, when compressor exhaust is finished, roller 2 is in the uppermost of cylinder 1 inner wall, sliding vane 3 is also in the uppermost position, through installing relay 4 in the position of cylinder 1 sliding vane groove correspondence sliding vane 3 uppermost, sliding vane 3 triggers relay 4 action this moment, signal that conveys the exhaust end gives relay 4, relay 4 action, control induction port department closes the induction port at the switching mechanism, prevent that roller 2 from continuing to rotate the time gaseous back flow along the induction port, just so there is not the suction port front edge angle, increase the air intake. When the tangential point of the roller 2 and the inner wall of the cylinder 1 rotates to the front edge position of the air suction port (namely, the position of the front edge angle a of the air suction port in fig. 1 and 2), the sliding vane 3 moves downwards, the top end of the sliding vane 3 is separated from the relay 4, the relay 4 is reset, and the switch mechanism arranged at the air suction port is opened, so that air can enter the air suction cavity from the air suction port, and the air suction process of the next cycle is carried out.
A relay 4 is added at the top of a sliding vane groove of a rotor compressor, a switch mechanism capable of controlling the opening and closing of the air suction port by the relay 4 is added at the air suction port of the air cylinder 1, the front edge angle of the air suction port is not existed any more, the air suction quantity is improved, and therefore the performance of the compressor is improved.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (10)
1. An intake port switching device, comprising:
a switching mechanism capable of opening and closing an air suction port of the compressor;
The control system is electrically connected with the switch mechanism and used for controlling the switch mechanism, and the power-on and power-off of the control system are controlled by a sliding vane of the compressor; when the sliding vane moves to the top of the stroke, the control system is triggered to be electrified to close the air suction port, and when the sliding vane moves down to the height corresponding to the front edge angle a of the air suction port, the control system is powered off to open the air suction port.
2. The suction port switching device according to claim 1, wherein the control system comprises:
the trigger circuit is electrically connected with the switch mechanism and controls the action of the switch mechanism;
a contact switch located in the trigger circuit, the closing or opening of the contact switch controlling the closing or opening of the trigger circuit; and the contact switch is arranged at the top end of the sliding vane movement stroke, when the sliding vane reaches the top end, the contact switch is closed, and when the sliding vane moves down to the height corresponding to the front edge angle a of the air suction port, the contact switch is opened.
3. The suction port switching device according to claim 2, wherein the contact switch is a relay.
4. A suction port switching device as claimed in claim 3, wherein the relay is a time relay, an electromagnetic relay or a limit switch.
5. The suction port switching device according to any one of claims 2 to 4, wherein the contact switch is of a mechanically triggered type.
6. The suction port switching device according to claim 1, wherein the control system is de-energized when a radial distance h > R (1-cosa) from an end of the slide contacting the rotor to the compressor cylinder, where R is a cylinder radius and a is a suction port leading edge angle.
7. The suction port switching device according to claim 1, wherein the switching mechanism includes a driver electrically connected to the control system.
8. The suction port switching device of claim 7, wherein the switching mechanism further comprises an electrically operated gate, and the driver is drivingly connected to the electrically operated gate.
9. The suction port switching device of claim 8, wherein the size of the electric door is adapted to the size of the suction port.
10. A rotor type compressor comprising a slide and an inlet opening and closing device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811274356.9A CN109185159B (en) | 2018-10-29 | 2018-10-29 | Air suction port switching device and rotor type compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811274356.9A CN109185159B (en) | 2018-10-29 | 2018-10-29 | Air suction port switching device and rotor type compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109185159A CN109185159A (en) | 2019-01-11 |
| CN109185159B true CN109185159B (en) | 2024-07-23 |
Family
ID=64940568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811274356.9A Active CN109185159B (en) | 2018-10-29 | 2018-10-29 | Air suction port switching device and rotor type compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109185159B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209129869U (en) * | 2018-10-29 | 2019-07-19 | 珠海凌达压缩机有限公司 | Air suction port switching device and rotor type compressor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100620040B1 (en) * | 2005-02-23 | 2006-09-11 | 엘지전자 주식회사 | Capacity variable device of rotary compressor and air conditioner |
| CN105179239B (en) * | 2015-09-11 | 2017-10-27 | 广东美芝制冷设备有限公司 | Rotary compressor and its compression mechanism |
| CN105221420A (en) * | 2015-10-22 | 2016-01-06 | 珠海凌达压缩机有限公司 | Refrigerating system and single-cylinder double-sliding-piece compressor thereof |
| CN108087274A (en) * | 2017-12-11 | 2018-05-29 | 加西贝拉压缩机有限公司 | A kind of air suction structure of rotor compressor |
-
2018
- 2018-10-29 CN CN201811274356.9A patent/CN109185159B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209129869U (en) * | 2018-10-29 | 2019-07-19 | 珠海凌达压缩机有限公司 | Air suction port switching device and rotor type compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109185159A (en) | 2019-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20170248353A1 (en) | High pressure compressor and refrigerating machine having a high pressure compressor | |
| CN109185159B (en) | Air suction port switching device and rotor type compressor | |
| CN109058106A (en) | Pump body assembly, compressor and dual-temperature air conditioning system | |
| CN203756525U (en) | Double-stage compressor | |
| CN113175436A (en) | Submerged vertical single-stage submersible pump | |
| CN209129869U (en) | Air suction port switching device and rotor type compressor | |
| CN208996948U (en) | Pump body assembly, compressor and dual-temperature air conditioning system | |
| CN203362601U (en) | Impeller assembly of mine submerged multi-stage pump | |
| CN103883525A (en) | Double-stage compressor | |
| CN110112858B (en) | A high performance motor for air conditioning compressor | |
| CN212717162U (en) | Pump body assembly and rotor compressor | |
| CN201715651U (en) | Car ventilator | |
| CN216278509U (en) | Compressor and air conditioner with same | |
| CN208996947U (en) | Variable-capacity pump body assembly and compressor with same | |
| CN112901497B (en) | Exhaust valve sheet assembly, compressor and air conditioner with same | |
| CN202391737U (en) | Variable-stage compressor | |
| CN112360796A (en) | Device for reducing starting current of fan of dust remover | |
| CN111734635A (en) | A pump body assembly and rotor compressor | |
| CN113522521A (en) | A waste gas treatment device for iron-containing scrap steel smelting | |
| CN211777999U (en) | Vacuum pump | |
| CN204943614U (en) | A kind of multifunctional cooker hood | |
| SU1137246A1 (en) | Rotary compressor | |
| CN220646146U (en) | Automatic inflator for tent | |
| CN209025027U (en) | A kind of Bothridium Machine leaves storage device | |
| CN113270298B (en) | High-voltage contactor for new energy automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |