Variable-frequency screw compressor and air conditioner
A screw compressor and internal pressure technology, applied in the field of compressors, can solve problems such as complicated methods, and achieve the effects of less useless work, high energy efficiency and simple structure
Active Publication Date: 2017-11-24
GREE ELECTRIC APPLIANCES INC
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- Application Information
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Problems solved by technology
[0006] The inventor found that at least the following problems exist in the prior art: the hydraulic oil and the pressure detection element used in the prior art cooperate to adjust to make the internal pressure and external pressure equal, which is very complicated
Method used
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Embodiment Construction
[0032] Combine below Figure 3 ~ Figure 5 The technical solution provided by the present invention is described in more detail.
[0033] In order to facilitate the description of the technical solution of this embodiment, first combine image 3 Introduce each part. see image 3 , the slide valve mechanism 2, the partition plate 3 and the rotor 4 are all arranged inside the body 1, from right to left, the whole cavity is divided into an independent end cavity (P0 cavity), the first cavity (P1 cavity), the second cavity The second cavity (P2 cavity), the third cavity (P3 cavity) and the fourth cavity (P4 cavity). The P5 chamber is located inside the slide valve mechanism 2, the pressure in the P5 chamber is equal to the internal pressure, and the P5 chamber communicates with the P2 chamber. The first cavity and the second cavity are isolated by a sealing ring. Wherein, the first inner hole 24 of the slide valve 21 communicates with the second inner hole 25 of the connector ...
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The invention discloses a variable-frequency screw compressor and an air conditioner, and relates to the field of compressors. The energy efficiency of the variable-frequency screw compressor can be improved. The variable-frequency screw compressor comprises a body, a slide valve mechanism and a partition, wherein the slide valve mechanism is connected with the partition; the slide valve mechanism and the partition are arranged in the body; the partition is used for driving the slide valve mechanism to move towards the internal pressure reduction direction under the effect of internal pressure when the internal pressure of the variable-frequency screw compressor is greater than external pressure, and driving the slide valve mechanism to move towards the internal pressure increasing direction under the effect of the external pressure when the internal pressure is smaller than the external pressure. By the technical scheme, the internal pressure and the external pressure can be matched automatically, the internal pressure after compression of a rotor of the compressor is equal to the external pressure after air exhausting, the idle work of the compressor is minimum, and the energy efficiency is the highest.
Description
technical field [0001] The invention relates to the field of compressors, in particular to a variable frequency screw compressor and an air conditioner. Background technique [0002] see figure 1 The variable frequency screw compressor adjusts the load of the compressor by adjusting the rotating speed. The motor 10 is a variable frequency motor, the rotating speed of the motor 10 is adjustable, and the motor 10 directly drives the male rotor of the screw compressor to rotate. When the rotating speed of the motor 10 was high, the rotating speed of the rotor 30 would also become higher, and the displacement of the compressor would become higher; amount will become smaller. [0003] The slide valve 20 is an important part of the variable frequency screw compressor, which is used to adjust the internal volume ratio of the variable frequency screw compressor. see figure 1 and figure 2 , The spool valve 20 is driven by the oil piston 40, the spool valve 20 and the oil piston...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F04C18/16F04C28/12F04C29/00
CPCF04C18/16F04C28/12F04C29/00Y02B30/70
Inventor 刘华李日华张天翼张贺龙许云功张宝鸽
Owner GREE ELECTRIC APPLIANCES INC