CN211500976U - Pump body assembly, rotary compressor and air conditioner - Google Patents

Abstract

The utility model provides a pump body subassembly, rotary compressor, air conditioner. One of them pump body subassembly, including the exhaust chamber, the exhaust chamber is constructed with first exhaust port, the low reaches of first exhaust port are equipped with the muffler, the muffler is used for right the air current of first exhaust port exhaust cushions and makes an uproar, be constructed with the second exhaust port on the muffler, the flow area of first exhaust port is S1, the flow area of second exhaust port is S0, and 0.314 < S0/S1 < 0.865. The utility model provides a pair of pump body subassembly, rotary compressor, air conditioner can reduce the compressor and tell the oil rate, reduces because of telling the oil rate too high and lubricated not enough compressor reliability risk that leads to, improves compressor refrigerating capacity and realizes the compressor high efficiency simultaneously.

Description

Pump body assembly, rotary compressor and air conditioner

Technical Field

The utility model belongs to the technical field of air conditioning, concretely relates to pump body subassembly, rotary compressor, air conditioner.

Background

The rolling rotor type compressor also is a rotary compressor pump body assembly which comprises a cylinder, a roller, a crankshaft, an upper flange assembly, a lower flange assembly (comprising an upper flange, a lower flange, an exhaust valve plate and a valve plate limit baffle) and a slip sheet, wherein the pump body parts are mutually matched to form a closed high-pressure cavity (an exhaust cavity or a compression cavity) and a low-pressure cavity (an air suction cavity), the slip sheet is in clearance fit with a cylinder slip sheet groove, and reciprocates in the slip sheet groove, so that the volume of the high-pressure cavity and the low-pressure cavity is periodically changed, when the volume of the compression cavity is reduced to a certain degree, the gas pressure in the compression cavity reaches or exceeds the backpressure borne by the valve plate above a flange exhaust port, the valve plate is opened, the gas in the compression cavity. In order to reduce the aerodynamic noise of the exhaust gas, a silencer is usually installed on the exhaust passage of the flange, so that the exhaust gas flow is subjected to reactive silencing through a silencer expansion cavity and then is discharged out of the pump body to the inside of the compressor shell from the silencer exhaust port.

Rotary compressors tend to be more and more miniaturized, the design space of the displacement of a small series of compressors is necessarily limited, and high frequency is necessarily the development trend of the compressors in order to meet the requirement of cooling capacity. For small series of compressors, the oil discharge rate of the compressor is easily increased due to high frequency, and a large amount of frozen lubricating oil is discharged out of a compressor shell along with high-pressure gas in a gaseous state to enter a system, so that the lubricating oil in the compressor is insufficient, and the reliability problem of the compressor is caused. In addition, since a large amount of lubricant is contained in the discharge gas, the refrigerating capacity is reduced, the compressor energy efficiency is lowered, and it is not advantageous for efficient design of the compressor. And at present in the industry often inject gas vent and the flange gas vent (can also say that exhaust chamber gas vent) to the muffler based on how to reduce the exhaust noise level of compressor, the utility model discloses the people finds after a large amount of research, based on falling the limit of making an uproar to the gas vent of muffler and flange gas vent and can not realize effective control to the oil yield of compressor, based on this, propose the utility model discloses the oil discharge rate of compressor is limited to the gas vent of muffler is reduced.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model is to provide a pump body subassembly, rotary compressor, air conditioner can reduce the compressor and tell the oil rate, reduces the compressor reliability risk that leads to because of the oil rate is too high and lubricated not enough, improves compressor refrigerating capacity simultaneously and realizes the compressor high efficiency.

In order to solve the problem, the utility model provides a pump body subassembly, including the exhaust chamber, the exhaust chamber is constructed with first gas vent, the low reaches of first gas vent are equipped with the muffler, the muffler is used for right the air current of first gas vent makes an uproar falls in the buffering, be constructed with the second gas vent on the muffler, the flow area of first gas vent is S1, the flow area of second gas vent is S0, and 0.314 < S0/S1 < 0.865.

Preferably, 0.42 < S0/S1 < 0.75.

Preferably, 0.58 < S0/S1 < 0.65.

Preferably, the equivalent diameter of the second exhaust port is d0, and the equivalent diameter of the first exhaust port is d1, 0.56d1 < d0 < 0.93d 1.

Preferably, the pump body assembly further includes a first flange, a crankshaft, and a motor rotor, the first flange is sleeved on the crankshaft, the first exhaust port is configured on the first flange, the muffler is connected to the first flange in a covering manner, on the side away from the first cylinder, along the axial direction of the crankshaft, the motor rotor forms a first projection area on the muffler, and the second exhaust port is located outside the first projection area.

Preferably, the muffler has a circumferential standing wall extending in an axial direction of the crankshaft, and the second exhaust port is on the circumferential standing wall.

Preferably, the second exhaust port is circular or elliptical.

Preferably, the muffler is a double-layer muffler or a multi-layer muffler.

The utility model also provides a rotary compressor, including foretell pump body subassembly.

The utility model also provides an air conditioner, including foretell rotary compressor.

The utility model provides a pair of pump body subassembly, rotary compressor, air conditioner, it is right through S0 and S1' S big-small proportional relation can reduce the compressor high frequency and tell oily rate, reduces because of telling oily rate too high and lubricated not enough compressor reliability risk that leads to, improves compressor refrigerating capacity simultaneously and realizes the compressor high efficiency, further ensures that the vice spare part of compressor pump body friction is effectively lubricated to reduce compressor mechanical noise to a certain extent.

Drawings

Fig. 1 is a schematic cross-sectional view of a pump body assembly according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at M;

FIG. 3 is a schematic diagram of an embodiment of the muffler of FIG. 1;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a schematic structural view of another embodiment of the muffler of FIG. 1;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;

FIG. 7 is a schematic structural view of yet another embodiment of the muffler of FIG. 1;

FIG. 8 is a schematic structural view of another embodiment of the muffler of FIG. 1.

The reference numerals are represented as:

1. an exhaust chamber; 11. a first exhaust port; 2. a muffler; 21. a second exhaust port; 22. a circumferential upright wall; 31. a first flange; 32. a first cylinder; 33. a crankshaft; 34. a second flange; 35. a first roller.

Detailed Description

Referring to fig. 1 to 8 in combination, according to an embodiment of the present invention, there is provided a pump body assembly, including a first flange 31, a second flange 34, a first cylinder 32, a crankshaft 33, and a sliding piece (not shown in the drawings), wherein the first cylinder 32 has a hollow structure, the first flange 31 and the second flange 34 are respectively located at two axial ends of the first cylinder 32, the crankshaft 33 is inserted into the first flange 31 and the second flange 34, and the crankshaft 33 has an eccentric portion, a first roller 35 is sleeved on the eccentric portion, the sliding piece is slidably connected in a sliding slot of the first cylinder 32, an end of the sliding piece is connected to an outer peripheral wall of the first roller 35 in an abutting manner, so that the hollow structure is divided into a suction cavity (low pressure cavity) and a discharge cavity 1 (high pressure cavity), the discharge cavity 1 is configured with a first discharge port 11, specifically, the first exhaust port 11 may be configured on the first flange 31, for example, a muffler 2 is disposed downstream of the first exhaust port 11, the muffler 2 is used for buffering and reducing noise of the airflow discharged from the first exhaust port 11, a second exhaust port 21 is configured on the muffler 2, a flow area of the first exhaust port 11 is S1, a flow area of the second exhaust port 21 is S0, and 0.314 < S0/S1 < 0.865. According to the technical scheme, the high-frequency oil discharge rate of the compressor can be reduced through the size proportional relation of the S0 and the S1, the reliability risk of the compressor caused by insufficient lubrication due to overhigh oil discharge rate is reduced, the refrigeration capacity of the compressor is improved to realize high efficiency of the compressor, effective lubrication of friction pair parts of a pump body of the compressor is further ensured, and therefore mechanical noise of the compressor is reduced to a certain extent. Further, 0.42 < S0/S1 < 0.75. Most preferably, 0.58 < S0/S1 < 0.65.

The second exhaust port 21 may have a relatively regular shape such as a circle or an ellipse (as shown in fig. 7), so as to simplify the manufacturing process of the second exhaust port 21, and the second exhaust port 21 may have another irregular shape (as shown in fig. 8), and of course, the shape of the first exhaust port 11 may be selected as described above. The definition of the second exhaust port 21 may be achieved in the form of an equivalent diameter, the equivalent diameter of the second exhaust port 21 being d0, the equivalent diameter of the first exhaust port 11 being d1, 0.56d1 < d0 < 0.93d1, it being understood that,

further, the pump body assembly may be a single working chamber (single cylinder) or a multiple working chamber (multiple cylinders), the number of the exhaust ports of the same muffler or flange may be single or multiple, when the number of the exhaust ports is multiple cylinders or multiple exhaust ports, the flow area S0 of the second exhaust port 21 and the flow area S1 of the first exhaust port 11 respectively refer to the sum of the flow areas of the exhaust ports of the mufflers and the sum of the flow areas of the exhaust ports of the flange.

Preferably, the pump body assembly further includes a motor rotor (not shown in the figure), the motor rotor is sleeved on the crankshaft 33 for driving the crankshaft 33 to rotate, the first flange 31 is sleeved on the crankshaft 33, the first exhaust port 11 is configured on the first flange 31, the muffler 2 covers a side of the first flange 31 away from the first cylinder 32, the motor rotor forms a first projection area on the muffler 2 along the axial direction of the crankshaft 33, and the second exhaust port 21 is located outside the first projection area, thereby ensuring that the gas flow flowing out of the second exhaust port 21 does not directly impact the motor rotor rotating at a high speed, and the exhaust gas avoids the rotating motor rotor to impact on a stationary motor stator end face, so that the exhaust gas can be further separated on the motor stator end face, when the oil discharge rate is reduced, the gas discharged by the silencer 2 is prevented from directly impacting the end face of the rotor of the rotating motor above the silencer to the maximum extent to cause large airflow pulsation, pneumatic noise caused by the exhaust airflow pulsation is reduced, the rotating power consumption of the motor is reduced, and the energy efficiency of the compressor is improved.

Further, the muffler 2 has a circumferential standing wall 22 extending in the axial direction of the crankshaft 33, and the second exhaust port 21 is provided in the circumferential standing wall 22. In the technical scheme, axial exhaust is changed into lateral exhaust, so that exhaust gas can completely avoid a motor rotor of the compressor, and the gas exhausted by the silencer 2 impacts a static flange skirt or a shell of the compressor, thereby reducing the oil discharge rate, reducing the airflow pulsation and the power consumption of the motor to a greater extent and achieving the effect of improving efficiency and reducing noise.

Preferably, the muffler is a double-layer muffler or a multi-layer muffler.

The utility model also provides a rotary compressor, including foretell pump body subassembly.

The utility model also provides an air conditioner, including foretell rotary compressor.

Through the utility model discloses the people verifies in the compressor model machine of specific model the utility model discloses technical scheme effect, as shown in the following table, mainly show and effectively reduce at the compressor oil-discharging rate, the efficiency promotes comparatively obviously, and the noise total value within full frequency channel and 1000Hz has the reduction of certain degree. Compared with the prior art compressor, the utility model discloses oil rate, performance, noise test data show are told to the reality of technical scheme compressor, and under the national standard 80Hz operating mode, the oil rate of tolling is reduced to 1.26% by 2.17%, and full frequency channel noise total value reduces 1.2dBA, and the total value of noise reduces 2.35dBA within 1000Hz, and efficiency COP promotes 1.5%.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The pump body assembly is characterized by comprising an exhaust cavity (1), wherein the exhaust cavity (1) is configured with a first exhaust port (11), a muffler (2) is arranged at the downstream of the first exhaust port (11), the muffler (2) is used for buffering and reducing noise of airflow exhausted by the first exhaust port (11), a second exhaust port (21) is configured on the muffler (2), the flow area of the first exhaust port (11) is S1, the flow area of the second exhaust port (21) is S0, and S0/S1 is more than 0.314.

2. The pump body assembly of claim 1, wherein 0.42 < S0/S1 < 0.75.

3. The pump body assembly of claim 2, wherein 0.58 < S0/S1 < 0.65.

4. The pump body assembly according to claim 1, characterized in that the equivalent diameter of the second exhaust port (21) is d0, the equivalent diameter of the first exhaust port (11) is d1, 0.56d1 < d0 < 0.93d 1.

5. The pump body assembly according to claim 1, further comprising a first flange (31), a crankshaft (33), and a motor rotor, wherein the first flange (31) is sleeved on the crankshaft (33), the first exhaust port (11) is configured on the first flange (31), the muffler (2) is covered and connected to one side of the first flange (31) far away from the first cylinder (32), the motor rotor forms a first projection area on the muffler (2) along the axial direction of the crankshaft (33), and the second exhaust port (21) is located outside the first projection area.

6. The pump body assembly according to claim 5, characterized in that the muffler (2) has a circumferential standing wall (22) extending in an axial direction of the crankshaft (33), the second exhaust port (21) being on the circumferential standing wall (22).

7. The pump body assembly according to claim 1, characterized in that the second exhaust port (21) is circular or oval.

8. The pump body assembly of claim 1, wherein the acoustic damper is a double layer acoustic damper or a multi-layer acoustic damper.

9. A rotary compressor comprising a pump body assembly, characterized in that it is a pump body assembly according to any one of claims 1 to 8.

10. An air conditioner comprising a rotary compressor, wherein the rotary compressor is the rotary compressor of claim 9.

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