CN104214099B - Rolling rotor compressor pump body structure and air conditioner - Google Patents

Abstract

The invention provides a pump body structure of a rolling rotor compressor, which includes a crankshaft, a first cylinder, a second cylinder, a first roller placed in the first cylinder and a second roller placed in the second cylinder, the crankshaft A first eccentric part matched with the first roller and a second eccentric part matched with the second roller are provided on the top; the first cylinder and the second cylinder are adjacently arranged; the inner diameter of the first cylinder is larger than that of the second cylinder. The inner diameter of the cylinder; the first cylinder and the second cylinder are sealed by the first roller and the first eccentric part. It also relates to an air conditioner using the above-mentioned pump body structure. The pump body structure of the rolling rotor type compressor of the present invention has simple structure, low assembly process requirements, and stable operation of the compressor. Since there is no intermediate partition plate, the height of the pump body is reduced, the distance between the upper and lower flanges is reduced, and the stiffness of the crankshaft is increased. It is beneficial to reduce the vibration and noise of the crankshaft. Applied to the air conditioner, the air conditioner has little vibration and low noise.

Description

Rolling rotor compressor pump body structure and air conditioner

technical field

The invention relates to the field of refrigeration, in particular to a pump body structure of a rolling rotor compressor without an intermediate partition and an air conditioner.

Background technique

According to the number of cylinders, rotary compressors can be divided into single-cylinder compressors and double-cylinder compressors. The crankshaft used in the single-cylinder compressor is a single-flap crankshaft, corresponding to a compression chamber, while the crankshaft of the double-cylinder compressor is a double-flap crankshaft. , each bell crank corresponds to a compression chamber, and the two compression chambers form an angle of 180 degrees. Each compression chamber has its own suction and exhaust passages. From the perspective of the number of parts, the pump body of the double-cylinder compressor needs two rolling rotors , Two cylinders. The two-cylinder compressor sucks and exhausts twice in one week of the rotor, so that the pressure fluctuation of the gas is reduced, and the variation range of the torque becomes smaller, which is only 30% of the single-cylinder compressor, so its vibration and noise are large In order to improve, but there are still some disadvantages at present. Due to the increase of the fit clearance, the leakage will also increase, so it will have a negative impact on the performance. At the same time, because the assembly of the double-cylinder compressor is much more complicated than that of the single-cylinder system, the assembly of the pump body It is a difficult technique to master. For rolling rotor two-stage compressors with intermediate partitions, the height of the pump body exceeds the height of the intermediate partition; the distance between the two supporting journals of the upper and lower flanges is elongated, which is not conducive to reducing noise and vibration. At the same time, due to the high precision requirements of each part of the compressor, there is an additional intermediate partition in the structure, which increases the difficulty of the assembly process.

Contents of the invention

In order to overcome the deficiencies of the prior art, the present invention provides a pump body structure of a rolling rotor compressor and an air conditioner, which have a simple structure, low assembly difficulty, stable operation and low noise. To achieve the above object, the technical scheme of the present invention is as follows:

A pump body structure of a rolling rotor compressor, comprising a crankshaft, a first cylinder, a second cylinder, a first roller placed in the first cylinder, and a second roller placed in the second cylinder, It is characterized by:

The crankshaft is provided with a first eccentric part matched with the first roller and a second eccentric part matched with the second roller;

The first cylinder is adjacent to the second cylinder;

the inner diameter of the first cylinder is larger than the inner diameter of the second cylinder;

The first roller and the first eccentric portion seal between the first cylinder and the second cylinder.

Preferably, the cylinder body of the second cylinder is provided with an exhaust port for the exhaust of the first cylinder;

The exhaust port communicates with the intake port of the second cylinder.

Preferably, an enthalpy increasing chamber is provided on the cylinder block of the second cylinder, the enthalpy increasing chamber communicates with the exhaust port, and one end opening of the enthalpy increasing chamber serves as the suction port of the second cylinder.

Preferably, the first cylinder and the second cylinder are both primary compression cylinders.

Preferably, the number of the first cylinder is two, and the number of the second cylinder is one;

Or the number of the second cylinder is two, and the number of the first cylinder is one.

Preferably, the number of the first cylinder and the number of the second cylinder are both more than two.

Preferably, the first cylinder and the second cylinder are both primary compression cylinders.

Preferably, more than two first cylinders and second cylinders are connected in series to form multi-stage compression.

Preferably, both ends of the pump body structure are respectively provided with a first flange and a second flange for passing through the crankshaft;

The pump body structure is sealed by the first flange and the second flange.

It also relates to an air conditioner, including a compressor, and the pump body structure of the compressor is the rolling rotor compressor pump body structure of any one of the above-mentioned technical features.

The beneficial effects of the present invention are:

The pump body structure of the rolling rotor type compressor and the air conditioner of the present invention have simple structure, low assembly process requirements, and stable operation of the compressor. Since there is no intermediate partition plate, the height of the pump body is reduced, the distance between the upper and lower flanges is reduced, and the crankshaft Increased stiffness helps reduce crankshaft vibration and noise. The pump body structure is applied to the air conditioner, the vibration of the air conditioner is small, and the noise is low.

Description of drawings

Fig. 1 is a schematic cross-sectional view of the pump body structure of the rolling rotor compressor of the present invention

Fig. 2 is a schematic top view of the pump body structure shown in Fig. 1 when the first flange is not installed;

Fig. 3 is a schematic perspective view of the first cylinder shown in Fig. 1;

Fig. 4 is the schematic front view of crankshaft shown in Fig. 1;

in,

1 crankshaft; 11 first eccentric part; 12 second eccentric part; 2 first flange; 3 first cylinder;

31 inner circle of the first cylinder; 4 second cylinder; 41 inner circle of the second cylinder; 42 suction port of the second cylinder;

43 the exhaust port of the first cylinder; 44 the enthalpy chamber; 5 the second flange; 6 the lower cover; 7 the second roller;

71 second roller excircle; 8 compression cavity; 9 first roller; 91 first roller excircle.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the structure of the pump body of the rolling rotor compressor and the air conditioner of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Referring to Figures 1 to 4, an embodiment of the pump body structure of the rolling rotor compressor of the present invention includes a crankshaft 1, a first cylinder 3, a second cylinder 4, a first roller 9 placed in the first cylinder 3 and Place the second roller 7 in the second cylinder 4; as shown in Figure 2, wherein Figure 2 is a top view, the outer circle 91 of the first roller is in contact with the inner circle 31 of the first cylinder, and a crescent is formed in the first cylinder 3 Shaped working chamber, the sliding plate (not shown) on the cylinder body of the first cylinder 3 is set to make its end closely contact with the first roller 9 by the force of the spring, and the crescent-shaped working chamber is divided into two parts, They are the suction chamber and the compression chamber 8 respectively. The sliding plate reciprocates along the sliding plate groove with the rolling of the first roller 9, thereby changing the respective volumes of the suction chamber and the compression chamber 8. The outer circle 71 of the second roller and the The inner circle 41 of the second cylinder is in contact with each other. Similarly, the suction chamber and the compression chamber 8 are also formed in the second cylinder 4 .

The crankshaft 1 is provided with a first eccentric part 11 matched with the first roller 9 and a second eccentric part 12 matched with the second roller 7; that is, the first roller 9 is fixedly mounted on the first eccentric part 11 , the second roller 7 is installed on the second eccentric part 12;

The first cylinder 3 and the second cylinder 4 are arranged adjacently, the first cylinder 3 can be arranged on the top of the second cylinder 4, and can also be arranged on the bottom of the second cylinder 4;

The inner diameter of the first cylinder 3 is larger than that of the second cylinder 4 , and the first cylinder 3 and the second cylinder 4 are sealed by the first roller 9 and the first eccentric portion 11 . This kind of sealing mode saves the middle dividing plate that traditional sealing two cylinders are used.

Preferably, as a possible implementation, the cylinder block of the second cylinder 4 is provided with a first cylinder exhaust port 43 for exhausting the first cylinder 3;

The first cylinder exhaust port 43 communicates with the second cylinder intake port 42 of the second cylinder 4, so that the first cylinder 3 is one-stage compression, and the second cylinder 4 is two-stage compression; The first cylinder exhaust port 43 on the cylinder 4 exhausts, and the suction chamber of the second cylinder 4 plays the role of increasing enthalpy.

Preferably, the cylinder body of the second cylinder 4 is provided with an enthalpy-increasing chamber 44 with its enthalpy-increasing function, and the enthalpy-increasing chamber 44 communicates with the exhaust port 43 of the first cylinder, and one end opening of the enthalpy-increasing chamber 44 serves as the second cylinder intake port 42.

The working principle of the pump body structure in this embodiment is as follows: the gas (or refrigerant) is inhaled from the liquid distributor through the suction port of the first cylinder 3, and the first stage compression (stage compression) is performed in the first cylinder 3, and the gas After being compressed to a certain pressure, it enters the enthalpy increasing chamber 44 through the exhaust port 43 of the first cylinder, and then enters the second cylinder 4 through the suction port 42 of the second cylinder for two-stage compression. The exhaust port of cylinder 4 is exhausted.

Of course, both the first cylinder 3 and the second cylinder 4 can also be one-stage compression cylinders, so that the pump body structure can be applied to a common single-stage two-cylinder compressor; that is, the first cylinder 3 and the second cylinder 4 are connected in parallel in refrigeration In pipeline.

The pump body structure can also be designed into the situation of three cylinders, wherein, the quantity of the first cylinder 3 is two, and the quantity of the second cylinder 4 is one; or the quantity of the second cylinder 4 is two, and the quantity of the first cylinder 3 Quantity is one.

The pump body structure can also be designed to have more than four cylinders, wherein the number of the first cylinder 3 and the number of the second cylinder 4 are both more than two. Both the first cylinder 3 and the second cylinder 4 are one-stage compression cylinders, that is, the first cylinder 3 and the second cylinder 4 are connected in parallel in the refrigeration pipeline;

Alternatively, more than two first cylinders 3 and second cylinders 4 are connected in series, so that the pump body structure forms multi-stage compression.

The two ends of the pump body structure in the above embodiments are respectively provided with a first flange 2 (upper flange) and a second flange 5 (lower flange) for passing through the crankshaft 1; the upper end of the pump body structure It is sealed by the first flange 2, and the lower end is sealed by the second flange 5. For the convenience of assembly, the outer periphery of the second flange 5 is also provided with a lower cover 6.

The pump body structure of the above-mentioned rolling rotor compressor is applied to an air conditioner, wherein the air conditioner includes a compressor, the compressor is a rolling rotor compressor, and the pump body structure of the compressor is the pump body structure in the above-mentioned embodiment. Except the pump body structure of the compressor, other parts of the device are all prior art, and will not be repeated here.

The pump body structure of the rolling rotor compressor in the above embodiment cancels the intermediate partition of the traditional two-stage compressor; the inner diameters of the upper and lower cylinders are different; The end face of the eccentric part realizes sealing; the large cylinder performs one-stage compression, and the small cylinder performs two-stage compression, and the exhaust port of the first stage compression is opened on the small cylinder; The suction chamber acts as an enthalpy-increasing function; the enthalpy-increasing chamber is opened on the cylinder body of the small cylinder, and one end of the enthalpy-increasing chamber serves as the suction port of the small cylinder and is directly communicated with the small cylinder. Its structure is simple, the requirements for assembly process are low, and the compressor runs smoothly. Because there is no intermediate partition plate, the height of the pump body is reduced, the distance between the upper and lower flanges is reduced, and the stiffness of the crankshaft is increased, which is beneficial to reduce the vibration and noise of the crankshaft; at the same time, the single Stage double-cylinder or multi-cylinder compressors can also omit the middle partition. The pump body structure is applied to the air conditioner, the air conditioner has little vibration and low noise.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (8)

1. A pump body structure of a rolling rotor compressor, comprising a crankshaft, a first cylinder, a second cylinder, a first roller placed in the first cylinder and a second roller placed in the second cylinder son, characterized in that: The crankshaft is provided with a first eccentric part matched with the first roller and a second eccentric part matched with the second roller; The first cylinder is adjacent to the second cylinder; the inner diameter of the first cylinder is larger than the inner diameter of the second cylinder; The first cylinder and the second cylinder are sealed by the first roller and the first eccentric portion; The number of the first cylinder is two, and the number of the second cylinder is one; or the number of the second cylinder is two, and the number of the first cylinder is one; or the number of the first cylinder and The number of the second cylinders is more than two. 2. The pump body structure of the rolling rotor compressor according to claim 1, characterized in that: The cylinder block of the second cylinder is provided with an exhaust port for the exhaust of the first cylinder; The exhaust port communicates with the intake port of the second cylinder. 3. The pump body structure of the rolling rotor compressor according to claim 2, characterized in that: An enthalpy-increasing chamber is also provided on the cylinder body of the second cylinder, and the enthalpy-increasing chamber communicates with the exhaust port, and one end opening of the enthalpy-increasing chamber serves as the suction port of the second cylinder. 4. The pump body structure of the rolling rotor compressor according to claim 1, characterized in that: Both the first cylinder and the second cylinder are one-stage compression cylinders. 5. The pump body structure of the rolling rotor compressor according to claim 1, characterized in that: When the number of the first cylinder and the second cylinder is more than two, the two or more first cylinders and the second cylinder are all one-stage compression cylinders. 6. The pump body structure of the rolling rotor compressor according to claim 1, characterized in that: When the number of the first cylinder and the second cylinder is more than two, more than two of the first cylinder and the second cylinder are connected in series to form multi-stage compression. 7. The pump body structure of the rolling rotor compressor according to any one of claims 1-6, characterized in that: Both ends of the pump body structure are respectively provided with a first flange and a second flange for passing through the crankshaft; The pump body structure is sealed by the first flange and the second flange. 8. An air conditioner, including a compressor, characterized in that: The pump body structure of the compressor is the pump body structure of a rolling rotor compressor according to any one of claims 1-7.