CN100343527C

CN100343527C - Vortex compressor with anti-vacuum function

Info

Publication number: CN100343527C
Application number: CNB021586578A
Authority: CN
Inventors: 金必焕
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2002-12-25
Filing date: 2002-12-25
Publication date: 2007-10-17
Anticipated expiration: 2022-12-25
Also published as: CN1510295A

Abstract

The present invention relates to a scroll compressor with the function of vacuum prevention. The present invention comprises a vacuum preventing screw thread, a vacuum prevent screw bolt and a communicating part, wherein the vacuum preventing screw thread is formed on a fixed scroll disc from top to bottom in order to cause a high pressure separating plate and a lower pressure separating plate to be fixed to the fixed scroll disc; the vacuum preventing screw bolt can be combined with the vacuum preventing screw thread, and a cooling medium flow passage causing a cooling medium to flow can be formed between the vacuum preventing screw bolt and the vacuum preventing screw thread; one side of the communicating part is communicated with a high pressure chamber, and the other side of the communicating part is communicated with a low pressure chamber through the cooling medium flow passage to cause the cooling medium in the high pressure chamber to flow to the low pressure chamber. The scroll compressor with the function of vacuum prevention of the present invention uses a method that the vacuum preventing screw thread formed on the fixed scroll disc from top to bottom and the vacuum preventing screw bolt to form the cooling medium flow passage causing the cooling medium to flow through to cause the cooling medium in the high pressure chamber to flow into the low pressure chamber, and thereby, the problem of short service life of the compressor because of the vacuum state in the compressor can be solved. Besides, the present invention has the advantages of simple structure, easy manufacture, no failure incipient fault and low manufacturing cost.

Description

Turbocompressor with anti-vacuum ability

Technical field

The present invention relates to a kind of turbocompressor, particularly relate to a kind ofly make easily, do not have potential faults, manufacturing expense is low and have the turbocompressor of anti-vacuum ability.

Background technique

Fig. 1 is the turbocompressor part-structure sectional view of prior art.As shown in Figure 1, the turbocompressor of this prior art comprises that inside has the container 11 of storage area; Be arranged on the press part 21 of container 11 interior upsides and compressible refrigerant; Be arranged on press part 21 downsides and can be the motor part 31 that press part 21 provides power.One side of container 11 is provided with the suction pipe 13 that can suck refrigerant.The upside of suction pipe 13 is provided with the discharge tube 15 that can discharge compression back refrigerant.Upper space in the container 11 is provided with and can temporarily stores hyperbaric chamber H and the low pressure chamber L that is compressed refrigerant.Hyperbaric chamber H and low pressure chamber L divide with high low pressure separating plate 35, and the downside of high low pressure separating plate 35 is provided with press part 21.Press part 21 has static vortex disk 23 and movable orbiting scroll 28.The stator blade 24 of static vortex disk 23 has spiral-shaped, and it is fixed on the inside of container 11.Movable orbiting scroll 28 can rotate with respect to static vortex disk 23.The rotation blade 29 of movable orbiting scroll 28 also has spiral-shaped, and corresponding with stator blade 24.Motor part 31 is made of running shaft 34, rotor 33 and stator 32.Running shaft 34 movable orbiting scroll 28 downsides relatively carries out relative movement.Rotor 33 can rotate synchronously with running shaft 34.Stator 32 be fixedly installed on rotor 33 around.In addition, in the center portion of static vortex disk 23, promptly between stator blade 24 and rotation blade 29, be formed with compression chamber P.The coolant outlet port 26 of compression chamber P inside connects and is formed on chamber, the top wall of static vortex disk 23 to discharge compressed refrigerant.For the refrigerant that prevents to discharge produces adverse current, the upside of exhaust port 26 is provided with check valve 27.In the turbocompressor of this structure, might occur closing the so-called vacuum state situation that does not suck refrigerant that causes because of not shown feeding valve.If compressor moves under this vacuum state, will cause the temperature in the compressor to rise, static vortex disk 23 can produce inordinate wear with 28 of movable orbiting scrolls, thereby causes its life-span to be reduced.In addition, this traditional turbocompressor also has complex structure, makes difficulty, breaks down easily when using and problem such as manufacturing expense height.

Summary of the invention

In order to address the above problem, the object of the present invention is to provide a kind ofly make easily, do not have potential faults, manufacturing expense is low and have the turbocompressor of anti-vacuum ability.

In order to achieve the above object, in the turbocompressor of mainly forming by container, static vortex disk, movable orbiting scroll, high low pressure separating plate and motor part, the turbocompressor with anti-vacuum ability provided by the invention also be included as the high low pressure separating plate is fixed on the static vortex disk and on static vortex disk from top to bottom the vacuum of formation prevent screw thread; Can prevent that screw thread from combining with vacuum, and and vacuum prevent between the screw thread to form and can make the vacuum of the refrigerant circulation flow path that refrigerant flows through prevent bolt; Communicate with the hyperbaric chamber with a side, and opposite side is connected with low pressure chamber through the refrigerant circulation flow path, and the interconnecting part that the refrigerant in the hyperbaric chamber is flowed to low pressure chamber.

Turbocompressor with anti-vacuum ability provided by the invention is to be used on the static vortex disk vacuum that forms from top to bottom to prevent that screw thread and vacuum from preventing that bolt from combining and can make the method for the refrigerant circulation flow path that refrigerant flows through make the refrigerant in the hyperbaric chamber mobile in low pressure chamber to form, thereby can avoid causing the problem of its lost of life, and the simple structure of this turbocompressor, make easily, do not have potential faults and manufacturing expense low owing to the vacuum state that occurs in the compressor.

Description of drawings

Below in conjunction with the drawings and specific embodiments the turbocompressor with anti-vacuum ability provided by the invention is elaborated, the parts identical with the turbocompressor of prior art use identical symbol.

Fig. 1 is the turbocompressor part-structure sectional view of prior art.

The turbocompressor part-structure sectional view of Fig. 2 for having anti-vacuum ability among the present invention the 1st embodiment.

Fig. 3 prevents bolt position enlarged view for vacuum among Fig. 2.

Fig. 4 prevents that for the vacuum among Fig. 3 bolt and vacuum from preventing screw thread binding site enlarged view.

Fig. 5 prevents bolt arrangement figure for the vacuum that has the turbocompressor of anti-vacuum ability among the present invention the 2nd embodiment.

Phase diagram when Fig. 6 prevents that for the vacuum among Fig. 5 bolt from preventing that with vacuum screw thread from combining.

Embodiment

The turbocompressor part-structure sectional view of Fig. 2 for having anti-vacuum ability among the present invention the 1st embodiment.Fig. 3 prevents bolt position enlarged view for vacuum among Fig. 2.Fig. 4 prevents that for the vacuum among Fig. 3 bolt and vacuum from preventing screw thread binding site enlarged view.As Fig. 2, Fig. 3 and shown in Figure 4, the turbocompressor with anti-vacuum ability provided by the invention comprises that container 11, static vortex disk 23, movable orbiting scroll 28, high low pressure separating plate 35, vacuum prevent that screw thread 41, vacuum from preventing bolt 45 and interconnecting part 42.Container 11 inside have the storage area.The stator blade 24 of static vortex disk 23 has spiral-shaped, and it is fixed on the inside of container 11.Movable orbiting scroll 28 matches with static vortex disk 23, and relatively rotates with it.The rotation blade 29 of movable orbiting scroll 28 also has spiral-shaped, and corresponding with stator blade 24.High low pressure separating plate 35 is fixed on the top of static vortex disk 23, and it can be divided into the upper space of container 11 hyperbaric chamber H and low pressure chamber L.On static vortex disk 23, be formed with vacuum from top to bottom and prevent screw thread 41.Vacuum prevents that bolt 45 is combined in vacuum and prevents on the screw thread 41, and and vacuum prevent between the screw thread 41 to form the refrigerant circulation flow path 43b that refrigerant is flow through.One side of interconnecting part 42 communicates with hyperbaric chamber H, and opposite side communicates with low pressure chamber L through refrigerant circulation flow path 43b, and it can make the refrigerant in the H of hyperbaric chamber flow to low pressure chamber L.One side of container 11 is connected with suction pipe 13 that can suck refrigerant and the discharge tube 15 that can discharge refrigerant.The high low pressure separating plate 35 that static vortex disk 23 tops are provided with can be divided into the upper space of container 11 hyperbaric chamber H and low pressure chamber L.The below of movable orbiting scroll 28 is provided with the motor part 31 that can drive movable orbiting scroll 28.Motor part 31 is made of stator 32, rotor 33 and running shaft 34.In addition, the disc-shape of static vortex disk 23 for having certain radius, its upper-end surface is formed with the depressed part 25 to lower recess, and its center portion then is formed with the coolant outlet port 26 that can discharge refrigerant.The upside of coolant outlet port 26 is provided with check valve 27.Be formed with a plurality of screw threads 39 around the depressed part 25.Screw thread 39 combines with fixing bolt 37 and just high low pressure separating plate 35 and static vortex disk 23 can be combined into one.As shown in Figure 3, near the upper end of the static vortex disk 23 the refrigerant inflow entrance 48 is formed with vacuum from top to down and prevents screw thread 41, and vacuum prevents that screw thread 41 from can prevent that bolt 45 from combining with vacuum.As shown in Figure 4, vacuum prevents to have certain interval, the refrigerant circulation flow path 43b that formation can allow refrigerant pass through between the roller seating space of screw thread 41 and the crown that vacuum prevents bolt 45.Fig. 5 prevents bolt arrangement figure for the vacuum that has the turbocompressor of anti-vacuum ability among the present invention the 2nd embodiment.Phase diagram when Fig. 6 prevents that for the vacuum among Fig. 5 bolt from preventing that with vacuum screw thread from combining.As Fig. 5, shown in Figure 6, the vacuum among the present invention the 2nd embodiment prevents the groove that is formed with a pair of radially depression on the screw rod of bolt 55 and prolongs along its length direction.When vacuum prevented that screw thread 57 and vacuum from preventing that bolt 55 from combining, a pair of groove that vacuum prevents bolt 55 and vacuum prevented that screw thread 57 from combining and form a pair of refrigerant circulation flow path 56.The direction that flows to low pressure chamber L along refrigerant from hyperbaric chamber H is formed with interconnecting part 42 in the top and bottom of refrigerant circulation flow path 43b.Interconnecting part 42 is made up of the first access 43a and the second access 43c.The side of the first access 43a links to each other with depressed part 25, and opposite side communicates with refrigerant circulation flow path 43b.The side of the second access 43c links to each other with refrigerant circulation flow path 43b, and opposite side then communicates with the refrigerant inflow entrance 48 of static vortex disk 23 and movable orbiting scroll 28.Refrigerant among the H of hyperbaric chamber can flow into refrigerant inflow entrance 48 places of static vortex disk 23 and movable orbiting scroll 28 by the first access 43a, refrigerant circulation flow path 43b and the second access 43c.Press Ps can be represented by the formula by the refrigerant discharge that the second access 43c discharges:

Ps＝ρsAsL

Wherein ρ represent refrigerant by the time per unit length correspondence pressure fall; A is the sectional area of refrigerant circulation flow path 43b; L is the length of refrigerant circulation flow path 43b.The length calculation method of refrigerant circulation flow path 43b is that the mean radius between screw thread crown and the roller seating space multiply by pitch and multiply by the number of teeth again.Do not have heat exchange because the discharge of vacuum state is pressed, thus when the refrigerant discharge pressure Pd that discharges through static vortex disk 23 and movable orbiting scroll 28 compression backs at 10-18kg/cm ³In the time of in the scope, the refrigerant discharge pressure that the second access 43c discharges is designed to Ps 〉=0 and gets final product.When not having refrigerant to flow on the refrigerant inflow entrance 48 of static vortex disk 23 and movable orbiting scroll 28, refrigerant in the H of hyperbaric chamber will flow into low pressure chamber L from the first access 43a, refrigerant circulation flow path 43b and the second access 43c, be refrigerant inflow entrance 48 places, thereby can prevent to occur in the compressor vacuum state.

Claims

1, a kind of turbocompressor with anti-vacuum ability, comprise container, static vortex disk, movable orbiting scroll, high low pressure separating plate and motor part, it is characterized in that: described turbocompressor with anti-vacuum ability also is included as and high low pressure separating plate (35) is fixed on the vacuum that static vortex disk (23) is gone up and form from top to bottom prevents screw thread (41) on static vortex disk (23); Can prevent that screw thread (41) from combining with vacuum, and and vacuum prevent between the screw thread (41) to form and can make the vacuum of the refrigerant circulation flow path (43b) that refrigerant flows through prevent bolt (45); Communicate with hyperbaric chamber (H) with a side, and opposite side is connected with low pressure chamber (L) through refrigerant circulation flow path (43b), and can makes the interior refrigerant in hyperbaric chamber (H) to the mobile interconnecting part (42) of low pressure chamber (L).