A cylinder, a compressor and an air conditioning system

Abstract

The present invention relates to a cylinder, a compressor and an air-conditioning system, and belongs to the technical field of compressor cylinders. The cylinder comprises a cylinder body, an upper cover assembly and a lower cover assembly, wherein the upper cover assembly and the lower cover assembly respectively cover the two ends of the cylinder body, and an air intake passage and a chamber are provided on the side wall of the cylinder body, wherein the chamber is connected with the air intake passage through a flow channel. By adopting the above structure, the cylinder has the advantages of smaller air intake resistance, higher unit mass flow rate and higher energy efficiency. The above compressor adopts the cylinder, so the compressor has the advantage of higher energy efficiency. The above air-conditioning system adopts the above compressor, so the air-conditioning system has better effect.

Description

Technical Field

[0001] The invention belongs to the technical field of compressor cylinders, and in particular relates to a cylinder, a compressor and an air-conditioning system. Background Art

[0002] The rotary compressor in the prior art needs to use a cylinder to compress the gas. For the compressor used in the air conditioner, the refrigerant passes through the liquid distributor component and enters the compression chamber from the air intake channel of the cylinder for compression, and then is discharged. The role of the cylinder is to compress the refrigerant and pressurize the refrigerant. During this process, the refrigerant will also flow back from the compression chamber into the air intake channel under pressure, causing the refrigerant reflux phenomenon. In the next round of air intake, the refrigerant re-inhaled into the air intake channel collides with the refluxed refrigerant, thereby increasing the air intake resistance and reducing the unit mass flow of the compressor, so that the compressor energy efficiency is reduced. Summary of the invention

[0003] The present invention provides a cylinder, which is used to solve the technical problem in the prior art that when the cylinder is running, there is a refrigerant reflux phenomenon, which leads to increased suction resistance and reduced unit mass flow.

[0004] The present invention is achieved through the following technical scheme: a cylinder, comprising a cylinder body, an upper cover assembly and a lower cover assembly, wherein the upper cover assembly and the lower cover assembly respectively cover the two ends of the cylinder body, and an air intake channel and a chamber are provided on the side wall of the cylinder body, and the chamber is connected to the air intake channel through a flow channel.

[0005] Furthermore, in order to better implement the present invention, the chamber is arranged on the side of the air intake channel.

[0006] Furthermore, in order to better realize the present invention, a slide vane groove for installing a slide vane is provided on the side wall of the cylinder body, and also includes a first blocking block, which is removably installed in the slide vane groove and blocks the slide vane groove, and the chamber is formed between the first blocking block and the slide vane groove wall, the upper cover assembly and the lower cover assembly.

[0007] Furthermore, in order to better implement the present invention, the flow channel is a straight flow channel and the angle between the flow channel and the vane groove is σ, 0<σ<90°.

[0008] Furthermore, in order to better implement the present invention, a sliding vane groove for installing a sliding vane is provided on the side wall of the cylinder body, and the chamber and the sliding vane groove are respectively located on both sides of the air intake channel.

[0009] Furthermore, in order to better implement the present invention, the flow channel is a straight flow channel and the angle between the flow channel and the vane groove is θ, 0<θ<90°.

[0010] Furthermore, in order to better implement the present invention, the chamber passes through the outer wall of the cylinder body to form an opening, and further includes a second blocking block, which is detachably installed at the opening of the chamber and blocks the opening.

[0011] Furthermore, in order to better implement the present invention, a compression chamber is provided in the cylinder, the working volume of the compression chamber is V, the volume of the chamber is V1, and V1≥0.045V.

[0012] The present invention also provides a compressor, which adopts the above cylinder.

[0013] The present invention also provides an air conditioning system, which adopts the compressor.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The cylinder provided by the present invention has an upper cover assembly and a lower cover assembly respectively covering the two ends of the cylinder body to form a compression chamber in the cylinder body, and an air intake channel is provided on the side wall of the cylinder body, and a chamber is also provided on the side wall of the cylinder body, and the chamber is connected with the above-mentioned air intake channel through a flow channel. In this way, when the gas (refrigerant) entering through the air intake channel for the first time is compressed in the compression chamber, part of the gas inhaled for the first time will be pressed into the air intake channel. Since the chamber is connected with the air intake channel through the flow channel, the gas pressed into the air intake channel in the above process will be guided into the chamber through the flow channel for temporary storage, so that the gas content in the air intake channel is greatly reduced. When the air is inhaled for the second time, the air inhalation channel inhales gas from the outside again. Since the air inhalation channel contains almost no gas in the first inhalation process at this time, it will not cause additional resistance to the second inhalation. In addition, during the second inhalation, due to the change in pressure, the gas in the above chamber will enter the air inhalation channel again and enter the compression chamber together with the gas inhaled for the second time. Since the gas in the above chamber has been pressurized during the first inhalation and compression process, it has a certain pressure. After mixing with the gas inhaled for the second time, it will increase the unit mass flow rate of the cylinder, thereby improving energy efficiency.

[0016] (2) The compressor provided by the present invention has higher energy efficiency because it adopts the above-mentioned cylinder;

[0017] (3) The air conditioning system provided by the present invention has a better effect because it adopts the above-mentioned compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is an exploded view of the cylinder in Embodiment 2 of the present invention;

[0020] Figure 2 is a schematic structural diagram of a cylinder in Embodiment 2 of the present invention;

[0021] Figure 3 is a schematic cross-sectional view of a cylinder body in Embodiment 2 of the present invention;

[0022] Figure 4 It is a schematic cross-sectional view of the cylinder body in embodiment 3 of the present invention.

[0023] In the figure:

[0024] 1- cylinder body;

[0025] 2-Upper cover assembly;

[0026] 3-Lower cover assembly;

[0027] 4- Inhalation channel;

[0028] 5- Chamber;

[0029] 6- Slide;

[0030] 7-slide slot;

[0031] 8-First block;

[0032] 9- The second block;

[0033] 10- compression chamber;

[0034] 11- flow channel;

[0035] 12-Rotor. DETAILED DESCRIPTION

[0036] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0037] Embodiment 1:

[0038] The present embodiment provides a cylinder, comprising a cylinder body 1, an upper cover assembly 2 and a lower cover assembly 3. The upper cover assembly 2 and the lower cover assembly 3 are respectively covered at both ends of the cylinder body 1 to form a compression chamber 10 in the cylinder body 1. Of course, the cylinder also includes a rotor 12 arranged in the compression chamber 10. The rotor 12 rotates in the compression chamber 10 to achieve the function of compressing gas.

[0039] The side wall of the cylinder body 1 is provided with an air intake passage 4, which is an air passage connecting the compression chamber 10 and the gas source (refrigerant source) and is used to guide the gas at the gas source into the compression chamber 10. In addition, a chamber 5 is also provided on the side wall of the cylinder body 1, and the chamber 5 is connected with the air intake passage 4 through a flow passage 11.

[0040] In order to facilitate the description of the working principle of the cylinder provided in this embodiment, two consecutive air intake processes are defined herein as the first air intake and the second air intake, respectively.

[0041] During the first inhalation, the gas at the gas source enters the intake channel 4 and enters the compression chamber 10 through the intake channel 4. At this time, the pressure of the gas entering the compression chamber 10 is P0. Of course, part of the gas with a pressure of P0 will also enter the chamber 5 through the flow channel 11, but most of the gas enters the compression chamber 10 and is compressed in the compression chamber 10 to form a gas with a pressure of P1, P1>P0. During the compression process, part of the gas with a pressure of P1 will flow back into the intake channel 4, but because the flow channel 11 connects the intake channel 4 with the chamber 5, the gas with a pressure of P1 in the intake channel 4 will enter the flow channel 11 and reach the chamber 5 for temporary storage. At this time, the chamber 5 is a refrigerant temporary storage room, so that the gas content with a pressure of P1 in the intake channel 4 is much smaller.

[0042] During the second inhalation, the intake channel 4 again inhales the gas at P0 pressure from the gas source. Since the gas content at P1 pressure in the intake channel 4 is very low, the gas at P1 pressure will not cause additional resistance to the gas entering the intake channel 4 during the second inhalation. During the second inhalation, due to the change in pressure and flow rate, the gas at P1 pressure in the above-mentioned chamber 5 will be brought into the intake channel 4 by the gas inhaled for the second time and enter the compression chamber 10 for compression together with the gas inhaled for the second time. Since the pressure of the gas in the above-mentioned chamber 5 is P1, it will increase the pressure of the gas entering the compression chamber 10 for the second time after mixing with the gas inhaled for the second time, thereby increasing the unit mass flow rate of the cylinder and thus improving energy efficiency.

[0043] As an optimal implementation mode of this embodiment, the chamber 5 in this embodiment is arranged on the side of the intake channel 4. The purpose of adopting this design is to make the distance between the chamber 5 and the intake channel 4 moderate to ensure that the gas can smoothly enter the chamber 5 from the flow channel 11 and enter the intake channel 4 from the chamber 5 through the flow channel 11.

[0044] Embodiment 2:

[0045] This embodiment is a specific implementation of the embodiment 1. The cylinder body 1 of the cylinder provided in this embodiment has a slide plate groove 7 on its side wall, and the slide plate 6 is installed in the slide plate groove 7. This is a prior art, so it will not be described in detail here. The slide plate groove 7 is a through groove that passes through the side wall of the cylinder body 1, and the slide plate 6 is slidably installed in the slide plate groove 7. The cylinder provided in this embodiment also includes a first block 8, such as Figure 1 , Figure 2 and Figure 3 As shown, the first block 8 can be detachably fixedly installed (screwed) in the above-mentioned slide groove 7 and blocks the slide groove 7. At this time, the above-mentioned chamber 5 is formed between the above-mentioned first block 8 and the groove wall of the slide groove 7, the upper cover component 2 and the lower cover component 3. It is worth noting that the slide groove 7 described in this embodiment actually includes a straight groove for slidingly installing the slide 6 and a slide groove provided at one end of the straight groove. The slide groove is the above-mentioned cavity 5. It is worth noting that the first block 8 can be a pipeline sealer of any shape or structure, as long as it can achieve the purpose of blocking the above-mentioned slide groove 7.

[0046] By adopting this structure, the chamber 5 on the cylinder provided in this embodiment for temporarily storing the refluxed gas (refrigerant) is actually a vane clearance groove (a part of the vane groove 7) blocked by the first blocking block 8. Therefore, there is no need to additionally change the structure of the cylinder body 1. Only the first blocking block 8 needs to be added, and the processing cost will not increase.

[0047] As a more preferred embodiment of this embodiment, in this embodiment, the flow channel 11 connecting the chamber 5 and the air intake channel 4 is a straight flow channel, the vane groove 7 on the cylinder is a straight groove, and the angle between the flow channel 11 and the vane groove 7 is σ, 0<σ<90°, that is, the angle between the flow channel 11 and the vane groove 7 is an acute angle, and the σ is from the attached Figure 3 In this way, it can be ensured that the gas can smoothly enter the chamber 5 from the air intake channel 4 and enter the air intake channel 4 from the chamber 5 when the flow rate and air pressure change. It is worth noting that the minimum wall thickness of the cylinder components and side walls described in this embodiment is 1 mm.

[0048] In addition, since the vane 6 needs to slide in the vane groove 7, there is a gap between the vane 6 and the wall of the vane groove 7, and the vane groove 7 is a through groove that penetrates the side wall of the cylinder body 1, so the gas in the compression chamber 10 will leak out of the cylinder from the gap between the vane 6 and the wall of the vane groove 7. The pressure of the leaked gas is insufficient and becomes an invalid volume after leaking out of the cylinder body 1. With the above structure, the gas leaked from the gap between the vane 6 and the wall of the vane groove 7 will directly enter the above chamber 5 for recovery without leaking out of the cylinder. During the second inhalation, this part of the gas can still re-enter the compression chamber 10 with the inhaled gas for compression. From this perspective, the above structure can increase the unit mass flow rate of the cylinder.

[0049] Embodiment 3:

[0050] This embodiment is another specific implementation of embodiment 1. Figure 4 As shown, the side wall of the cylinder body 1 provided in this embodiment is also provided with a sliding vane groove 7 for installing the sliding vane 6 and an independent chamber 5, and the chamber 5 and the sliding vane groove 7 are respectively located on both sides of the above-mentioned suction channel 4.

[0051] From practice and analysis, it can be known that if the side wall of the cylinder body 1 is divided with the intake passage 4 as the center, and the vane groove 7 is limited to be located on the right side of the intake passage 4, then the temperature of the side wall of the cylinder body 1 close to the above-mentioned vane groove 7 is high, while the temperature of the side wall of the cylinder body 1 located on the left side of the intake passage 4 is low.

[0052] The chamber 5 in this embodiment is arranged on the side wall of the cylinder body 1 and is located on both sides of the intake channel 4 together with the vane groove 7. In this way, the temperature of the chamber 5 is lower, the heating effect of the wall of the chamber 5 is smaller, the intake expansion is smaller, and therefore the intake gas density is larger. Under the condition of unchanged volume, the total intake amount can be increased, thereby enhancing the unit mass flow rate of the cylinder.

[0053] As a more preferred embodiment of this embodiment, in this embodiment, the flow channel 11 connecting the above-mentioned chamber 5 and the suction channel 4 is a straight flow channel, and the vane grooves 7 on the cylinder are all straight grooves. The angle between the above-mentioned flow channel 11 and the above-mentioned vane groove 7 is θ, 0<θ<90°, that is, the angle between the flow channel 11 and the vane groove 7 is an acute angle, and the angle θ is from the attached Figure 4 In this way, it can be ensured that the gas can smoothly enter the chamber 5 from the air intake channel 4 and enter the air intake channel 4 from the chamber 5 when the flow rate and air pressure change. It is worth noting that the minimum wall thickness of the cylinder components and side walls described in this embodiment is 1 mm.

[0054] In order to facilitate the processing of the chamber in this embodiment, a more preferred implementation of this embodiment is as follows: the chamber 5 in this embodiment passes through the outer wall of the cylinder body 1 to form an opening, and a second blocking block 9 is detachably fixedly installed (screwed) at the opening, and the second blocking block 9 blocks the opening. It is worth noting that the second blocking block 9 can be a pipeline sealer of any shape or structure, as long as it can block the opening of the above-mentioned chamber 5.

[0055] Embodiment 4:

[0056] This embodiment is the best implementation of the above embodiment. The working volume of the compression chamber 10 of the cylinder in this embodiment is limited to V, and the volume of the above chamber 5 is limited to V1, V1≥0.045V1.

[0057] Since the volume of cylinder reflux gas is related to the cylinder displacement and the suction pressure, setting V1≥0.045V1 can achieve the best effect.

[0058] Embodiment 5:

[0059] This embodiment provides a compressor that uses the above-mentioned cylinder, so the energy efficiency of the compressor is higher.

[0060] Embodiment 6:

[0061] This embodiment provides an air conditioning system, which adopts the above-mentioned compressor, so the effect of the air conditioning system is better.

[0062] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A cylinder, characterized in that: It comprises a cylinder body (1), an upper cover assembly (2) and a lower cover assembly (3), wherein the upper cover assembly (2) and the lower cover assembly (3) respectively cover the two ends of the cylinder body (1), and an air intake passage (4) and a chamber (5) are provided on the side wall of the cylinder body (1), and the chamber (5) is connected to the air intake passage (4) through a flow passage (11); The chamber (5) is arranged on the side of the air intake channel (4); The cylinder body (1) has a sliding vane groove (7) for mounting the sliding vane (6) on its side wall, and also includes a first blocking block (8), wherein the first blocking block (8) is detachably mounted in the sliding vane groove (7) and blocks the sliding vane groove (7); The chamber (5) is formed between the first blocking block (8), the wall of the sliding plate slot (7), the upper cover assembly (2) and the lower cover assembly (3); Alternatively, the chamber (5) and the slide groove (7) are respectively located on two sides of the air intake channel (4); The cylinder has a compression chamber (10), the working volume of the compression chamber (10) is V, the volume of the chamber (5) is V1, and V1 is ≥ 0.045V.

2. A cylinder according to claim 1, characterized in that: The flow channel (11) is a straight flow channel, and the angle between the flow channel (11) and the vane groove (7) is σ, where 0<σ<90°.

3. A cylinder according to claim 1, characterized in that: When the chamber (5) and the vane groove (7) are respectively located on both sides of the air intake passage (4), the chamber (5) passes through the outer wall of the cylinder body (1) to form an opening, and further comprises a second blocking block (9), wherein the second blocking block (9) is detachably mounted at the opening of the chamber (5) and blocks the opening.

4. A compressor, characterized in that: A cylinder comprising any one of claims 1-3.

5. An air conditioning system, characterized in that: Comprising the compressor as claimed in claim 4.

Images