CN110594157A - A cylinder partition and compressor - Google Patents

Abstract

The invention provides a cylinder clapboard and a compressor, wherein the cylinder clapboard is used for a double-cylinder or multi-cylinder clapboard to supplement air and increase enthalpy, and comprises the following components: the air supplementing port is arranged in the annular sealing band of the cylinder partition plate and penetrates through the cylinder partition plate; and an air supplement channel drilled from the side wall of the cylinder partition plate along the radial direction and communicated with the air supplement port. Through arranging the air supplement port on the baffle of the double-cylinder or multi-cylinder baffle air supplement enthalpy-increasing compressor, the air supplement port is completely positioned in the sealing strip and communicated with the air supplement channel, the air supplement amount is improved on the premise of ensuring the sealing property, the air supplement backflow is reduced, the performance of the compressor is improved, the processing is convenient, and the realization is easy.

Description

A cylinder partition and compressor

technical field

The present invention relates to the technical field of compressors, and more specifically, to a cylinder separator and a compressor.

Background technique

In the refrigeration/heating cycle, the compressor is a device that upgrades low-pressure refrigerant to high-pressure refrigerant. The working principle of the traditional rotary compressor is that the motor directly drives the crankshaft to rotate, and the crankshaft drives the eccentric piston to rotate in the compression chamber of the cylinder, causing the volume of the compression chamber to change, and then to complete the suction-compression-exhaust process, thus Realize the compression of refrigerant. However, under the low temperature condition of the traditional compressor, the low temperature heating capacity of the refrigerant is seriously attenuated, resulting in a significant decrease in the heating capacity of the compressor; and under the low temperature condition, the compression pressure ratio increases, the load increases, and the exhaust temperature increases. Resulting in reduced compressor reliability.

With the advancement of technology, users have higher and higher requirements on the energy efficiency of air conditioners. The technology of replenishing air and increasing enthalpy can make the air conditioner maintain high capacity and high energy efficiency in various environments. The improvement has become a major indicator.

For double-cylinder compressors or multi-cylinder compressors, in order to improve the performance of the compressor, traditional compressors usually increase the air supply port through the technology of supplementing air to increase enthalpy, and improve the performance by supplementing air during the working process of the compressor. Specifically, as shown in Fig. 1, an air supply port 110' is opened on the diaphragm of the compressor. Usually, high-efficiency compressors have large eccentricity, resulting in thin pistons and insufficient sealing distances. Generally, partial leakage is allowed to ensure the air supply volume, or the air supply port is reduced to reduce the air supply volume, and the performance of the compressor will be reduced.

Contents of the invention

Aiming at the above-mentioned problems in the prior art, the present application proposes a cylinder partition and a compressor including the cylinder partition, by arranging at least one The air supply port, which is completely in the sealing zone and communicated with the air supply channel, increases the air supply volume on the premise of ensuring sealing, reduces the backflow of supply air, improves the performance of the compressor, and is easy to process and easy to implement.

In the first aspect, the present application provides a cylinder diaphragm of a double-cylinder or multi-cylinder diaphragm replenishing air and increasing enthalpy compressor, which includes: an air supply port, which is arranged in the annular sealing zone of the cylinder diaphragm and runs through all the cylinder partition; and an air supply channel drilled from the side wall of the cylinder partition along the radial direction and communicated with the air supply port.

In an implementation manner of the first aspect, the width of the annular sealing band is obtained by the following formula:

Among them, L is the width of the annular sealing band, d ₁ is the inner diameter of the piston, d ₂ is the outer diameter of the piston, and e is the eccentricity of the crankshaft.

In an implementation manner of the first aspect, the diameter of the air supply port satisfies the following relationship:

Wherein, D ₁ is the diameter of the air supply port, and D ₂ is the diameter of the air supply channel.

In one embodiment of the first aspect, at least one air supply port is oval.

In one embodiment of the first aspect, at least one air supply opening is circular.

In an embodiment of the first aspect, the diameter of at least one of the supplementary air ports decreases gradually along a direction away from the exhaust port of the cylinder.

In an embodiment of the first aspect, at least one of the gas supply ports has the same diameter.

In an embodiment of the first aspect, the cylinder partition includes 1-3 circular air supply ports.

In the second aspect, the present application also provides a compressor including the cylinder separator of the first aspect and the embodiment thereof.

In an embodiment of the second aspect, the compressor further includes: a casing; a motor, which is accommodated in the casing and is composed of a rotor and a stator; a crankshaft, which is fixedly connected to the rotor; an eccentric part, which is integrated is formed at the end of the crankshaft; and a compression mechanical part including a first piston, a first cylinder, a first bearing, a second piston, a second cylinder and a second bearing, the cylinder separator is provided on the Between the first cylinder and the second cylinder.

Compared with the prior art, the cylinder baffle and compression cylinder provided by this application, by arranging two or more air supply ports on the baffles of double-cylinder or multi-cylinder baffles to supplement air and increase enthalpy, the air supply ports It is completely in the sealing zone and communicated with the air supply channel, which can increase the air supply volume, reduce the backflow of the supply air and improve the performance of the compressor under the premise of ensuring sealing. It is easy to process and easy to implement.

The above technical features can be combined in various suitable ways or replaced by equivalent technical features, as long as the purpose of the present invention can be achieved.

Description of drawings

Hereinafter, the present invention will be described in more detail based on the embodiments with reference to the accompanying drawings. in:

Fig. 1 has shown the structural diagram of air supplement enthalpy increase of prior art;

Fig. 2 has shown the structural representation of the cylinder separator according to the embodiment of the present invention;

Fig. 3 has shown the structure schematic diagram of the air supplement enthalpy increase according to the embodiment of the present invention;

Fig. 4 has shown the structure schematic diagram of supplementary air enthalpy increase according to another embodiment of the present invention;

Figure 5 shows a schematic structural view of a cylinder partition according to another embodiment of the present invention;

Figure 6 shows a schematic structural view of a cylinder partition according to another embodiment of the present invention;

Figure 7 shows a schematic structural view of a cylinder partition according to another embodiment of the present invention;

Fig. 8 shows a schematic structural diagram of a compressor according to another embodiment of the present invention.

List of reference signs:

100-cylinder partition; 110,110'-air supply port; 120-air supply channel; 130-ring sealing belt; 140-suction port; 150-exhaust port; 200-compressor; 210-housing; 211-motor; 220 - piston; 220' - first piston; 220" - second piston; 230 - crankshaft; 240 - eccentric; 251 - first cylinder; 252 - first bearing; 253 - second cylinder; 254 - second bearing.

In the figures, the same parts are given the same reference numerals. The drawings are not to scale.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing.

Fig. 2 is a schematic structural diagram of the cylinder partition 100 provided by the present invention, and Fig. 3 and Fig. 4 show the structural diagrams of air supplementation and enthalpy increase in the present invention. As shown in Figures 2 to 4, the cylinder partition 100 includes:

at least one air supply port 110, which is arranged in the annular sealing zone 130 of the cylinder diaphragm 100 and penetrates through the cylinder diaphragm 100; and

The air supply channel 120 is drilled from the side wall of the cylinder partition 100 in a radial direction and communicates with the at least one air supply port 110 .

In the cylinder partition of the present application, by setting the air supply port 110 in the pre-calculated annular sealing belt 130 of a certain width, and communicating with the air supply channel 120, the air supply volume can be increased under the premise of ensuring the sealing performance. Good replenishment air backflow, improve the performance of the compressor.

Specifically, as shown in FIG. 3 , on the cylinder diaphragm 100 , firstly, the position of the air supply port 110 is determined by calculation, that is, the position of the annular sealing band 130 , and its width L can be calculated by the following formula:

Wherein, L is the width of the annular sealing band 130, d ₁ is the inner diameter of the piston, d ₂ is the outer diameter of the piston, and e is the eccentricity of the crankshaft.

Within the annular range of the width L, when the piston 220 covers the suction port 140 (shown in FIG. 7 ) driven by the crankshaft, the at least one air supply port 110 can be exposed for supplementing air; When the suction port is used, the piston can cover the at least one air supply port 110 to reduce suction backflow.

It should be understood that the air supply port 110 can have various shapes, such as circular or non-circular. In the case of a non-circular shape, for example, the air supply port 110 is oval (as shown in FIG. 5 ), or consists of a semi-ellipse and a semi-circle.

For the purpose of clear description, in the following description, the gas supply port 110 will be described as a circular shape as an example.

Preferably, in order to ensure that the air supply port is located in the annular sealing zone 130, the size of the air supply port 110 should also satisfy the following relationship:

Wherein, D ₁ is the diameter of the air supply port, and D ₂ is the diameter of the air supply channel.

In the case of fixed intermediate pressure, the amount of air supply needs to be ensured by the size of the air supply port. The invention can solve the problem of supplementing the piston seal of the high-performance compressor pump body structure with small cylinder diameter, small cylinder height, large eccentricity, and thin piston wall. For the sealing problem encountered in the gas enthalpy increasing technology, the size of the air supply port should be ensured under the condition of ensuring the sealing performance. The test results show that the performance of the structure of the present invention is 2% higher than that of the ordinary piston seal.

Optionally, the air supply ports 110 provided on the cylinder partition 100 may be equal in size, as shown in FIG. 2 and FIG. 4 , which is convenient for processing and easy to realize.

It can also be unequal as shown in Figure 6 and Figure 7, that is, under the premise of satisfying the amount of air supply, the diameter of the at least one air supply port 110 gradually decreases along the direction away from the exhaust port 150, that is to say, it will be far away from the exhaust port 150. The air supply port of the exhaust port 150 is designed as a circle with a smaller size, which can reduce the cross-sectional area where the air supply port communicates with the suction port 140 and reduce the inhalation backflow.

The air supply channel 120 is always connected with the flasher of the air conditioning system, and at the same time communicates with the cylinder compression chamber through the air supply port 110. The volume change rate of the cylinder compression chamber changes with the rotation angle, resulting in the unsteady flow of refrigerant in the compression chamber. It is called air flow pulsation; air flow pulsation will directly affect the mass flow rate of the refrigerant in the compression process, thereby affecting the performance of the compressor. As the pressure increases, the pressure increases, which can effectively reduce the high-pressure backflow and gas pulsation in the compression chamber of the cylinder, and improve the performance of the compressor.

As shown in FIG. 8 , the present application also provides a compressor 200 , which may include the above-mentioned cylinder separator 100 . This compressor 200 can especially be double-cylinder structure, and it can also comprise housing 210, be contained in the electric motor 211 that rotor and stator constitute in the housing; The crankshaft 230 that is connected with rotor integrally; On the lower end of crankshaft 230 integrally form The eccentric part 240 (divided into an upper eccentric part and a lower eccentric part); consists of the first piston 220', the first cylinder 251 and the first bearing 252, the cylinder partition 100, the second piston 220", the second cylinder 253, the second The compression mechanical part formed by the bearing 254. Since the structure of the above two-cylinder compressor is well known to those skilled in the art, it will not be described in detail herein.

In describing the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", " The orientation or positional relationship indicated by "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, so as to Specific orientation configurations and operations, therefore, are not to be construed as limitations on the invention.

Although the invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely illustrative of the principles and applications of the invention. It is therefore to be understood that numerous modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the invention as defined by the appended claims. It shall be understood that different dependent claims and features described herein may be combined in a different way than that described in the original claims. It will also be appreciated that features described in connection with individual embodiments can be used in other described embodiments.

Claims (10)

1. A cylinder separator plate, comprising:

the air supplementing port is arranged in the annular sealing band of the cylinder partition plate and penetrates through the cylinder partition plate; and

and the air supplementing channel is drilled from the side wall of the cylinder partition plate along the radial direction and is communicated with the air supplementing port.

2. The cylinder bulkhead of claim 1, wherein the width of the annular sealing band is obtained by:

wherein L is the width of the annular sealing band, d₁Is the piston bore diameter, d₂Is the outer diameter of the piston, and e is the eccentric amount of the crankshaft.

3. A cylinder bulkhead according to claim 1 or 2, wherein at least one of the transfer ports is circular.

4. A cylinder bulkhead according to claim 3, wherein the diameters of the transfer ports satisfy the following relationship:

wherein D is₁Is the diameter of the air supply opening, D₂The diameter of the air supply channel.

5. A cylinder diaphragm according to claim 4, wherein the diameter of at least one of the supplementary ports decreases progressively in a direction away from the cylinder exhaust port.

6. The cylinder bulkhead of claim 4, wherein at least one of the transfer ports is of equal diameter.

7. The cylinder bulkhead of claim 1, wherein the number of makeup ports is 1 to 3.

8. The cylinder bulkhead of claim 1, wherein the air replenishment ports are oval shaped.

9. A compressor, characterized by comprising a cylinder head as claimed in any one of claims 1 to 8.

10. The compressor of claim 9, further comprising:

a housing;

a motor accommodated in the housing and composed of a rotor and a stator;

the crankshaft is fixedly connected with the rotor;

an eccentric portion integrally formed at an end of the crankshaft; and

the compression mechanism part comprises a first piston, a first cylinder, a first bearing, a second piston, a second cylinder and a second bearing, and the cylinder partition plate is arranged between the first cylinder and the second cylinder.