CN105332920B - Baffle assembly and three cylinder double-stage compressors for three cylinder double-stage compressors - Google Patents

Abstract

The present invention provides a kind of baffle assembly for being used for three cylinder double-stage compressors and three cylinder double-stage compressors.Wherein baffle assembly includes first partition and second partition, first partition is provided with the first volume groove for being used for storing refrigerant, opening is provided with first volume groove, second partition is provided with the second volume groove for being used for storing refrigerant, exhaust outlet is provided with second volume groove, first partition and second partition overlap so that the first volume groove and the second volume groove limit cavity volume, and refrigerant flows into cavity volume by exhaust outlet, flows out cavity volume by opening.The baffle assembly is arranged between the first low-pressure cylinder and the second low-pressure cylinder, solves the problems, such as that common baffle assembly can not be used in three cylinder double-stage compressors, and cost is low.

Description

Baffle assembly for three cylinder two stage compressor and three cylinder two stage compressor

technical field

The invention relates to the field of compressors, in particular to a diaphragm assembly for a three-cylinder two-stage compressor and a three-cylinder two-stage compressor.

Background technique

Due to the high cost of scroll compression molding machines, the price of commercial multi-line machines above 5HP (horsepower) is relatively high, which will affect the further expansion of its market in the long run. Therefore, it is imminent to develop a low-cost and high-efficiency rolling rotor compressor to replace the scroll compressor and reduce the manufacturing cost of the multi-stage compressor.

Traditional rolling rotor single-stage compressors have disadvantages such as poor high-temperature refrigeration and low-temperature heating effects, and low energy efficiency. The research and development of the two-stage enthalpy-increasing compressor makes up for these shortcomings, but the current rolling rotor compressor has only two cylinders. If it is designed as a two-stage compressor, it is difficult to increase its displacement. Therefore, it is necessary to develop a three-cylinder two-stage enthalpy-increasing frequency conversion compressor (three-cylinder two-stage compressor). In the three-cylinder two-stage compressor, the diaphragm assembly is one of its key structures, while the ordinary two-cylinder compressor diaphragm assembly cannot be used in the three-cylinder two-stage compressor.

Contents of the invention

In view of the status quo of the prior art, the object of the present invention is to provide a diaphragm assembly for a three-cylinder two-stage compressor and a three-cylinder two-stage compressor, which solves the problem that ordinary diaphragm assemblies cannot be used in three-cylinder two-stage compressors. problem in the machine.

To achieve the above purpose, an embodiment of the present invention provides a diaphragm assembly for a three-cylinder two-stage compressor, including:

A first partition, the first partition is provided with a first volume tank for storing refrigerant, and a flow hole is provided in the first volume tank;

A second partition, the second partition is provided with a second volume tank for storing refrigerant, and an exhaust port is provided in the second volume tank;

The first baffle and the second baffle are overlapped so that the first volume tank and the second volume tank define a volume chamber, and the refrigerant flows into the volume chamber through the exhaust port, and passes through The flow holes flow out of the volume chamber.

As a possible embodiment, an exhaust valve plate and an exhaust valve plate baffle are arranged in the second volume tank, the exhaust valve plate is located below the exhaust port, and the exhaust valve plate baffle It is located below the exhaust valve plate.

As a possible embodiment, the shapes of the first partition and the second partition are symmetrical.

As an embodiment, at least one threaded hole is provided on the first partition; at least one threaded hole is provided on the second partition; the position of the threaded hole on the first partition is the same as that of the second partition. The positions of the threaded holes on the two partitions are corresponding; screws pass through the threaded holes on the first partition and the threaded holes on the second partition to overlap and join the first partition and the second partition together.

As a possible embodiment, the number of the flow holes is more than three; the number of the exhaust port is at least one; the radial section of the exhaust port is circular.

As a possible embodiment, the total cross-sectional area of the three or more flow holes is larger than the cross-sectional area of the exhaust port.

As a possible embodiment, a first flow groove is also provided on the first separator; a second flow groove is also arranged on the second separator; the first flow groove and the second flow groove centers on the same axis.

As a possible embodiment, the cross-sectional areas of the first flow groove and the second flow groove are larger than the cross-sectional area of the exhaust port.

The embodiment of the present invention also provides a three-cylinder two-stage compressor, including:

a first low-pressure cylinder, a second low-pressure cylinder; and

A baffle assembly disposed between the first low-pressure cylinder and the second low-pressure cylinder, the baffle assembly is the above-mentioned baffle assembly.

As a possible embodiment, the effective volume of the volume chamber is greater than or equal to the effective volume of the first low-pressure cylinder; the effective volume of the volume chamber is greater than or equal to the effective volume of the second low-pressure cylinder.

The beneficial effects of the present invention include:

The diaphragm assembly for the three-cylinder two-stage compressor and the three-cylinder two-stage compressor of the present invention, wherein the diaphragm assembly includes a first diaphragm and a second diaphragm, the first volume groove is arranged on the first diaphragm, and the second diaphragm is arranged on the first diaphragm. A second volume tank is arranged on the two partitions, and the first partition board and the second partition board are overlapped so that the first volume tank and the second volume tank define a volume cavity for storing refrigerant, and a flow hole is arranged in the first volume tank , used to discharge the refrigerant in the volume cavity, and an exhaust port is arranged in the second volume tank to introduce the refrigerant into the volume cavity. It is arranged between the first low-pressure cylinder and the second low-pressure cylinder, which solves the problem that ordinary diaphragm assemblies cannot be used in three-cylinder two-stage compressors, and has low cost, realizing low-cost and high-efficiency three-cylinder two-stage compression The machine replaces the scroll compressor.

Description of drawings

Fig. 1 is the schematic diagram of an embodiment of the diaphragm assembly that is used for three-cylinder two-stage compressor of the present invention;

Fig. 2 is the schematic diagram of an embodiment of the volume cavity formed by the first partition and the second partition of the partition assembly used in the three-cylinder two-stage compressor of the present invention;

Fig. 3 is a structural schematic diagram of an embodiment of the first baffle for the baffle assembly of the three-cylinder two-stage compressor of the present invention;

Fig. 4 is a schematic structural view of an embodiment of the second baffle for the baffle assembly of the three-cylinder two-stage compressor of the present invention;

Fig. 5 is the structure schematic diagram of another embodiment of the second partition for the partition assembly of the three-cylinder two-stage compressor of the present invention;

Fig. 6 is a structural schematic diagram of an embodiment of the three-cylinder two-stage compressor of the present invention.

Explanation of reference signs:

1 first partition; 2 second partition; 3 volume cavity; 4 screw; 5 first low pressure cylinder; 6 second low pressure cylinder; 7 medium pressure chamber; 8 high pressure cylinder; 9 third partition; 10 lower cover plate ; 11 first volume tank; 12 flow hole; 13 first flow tank; 21 second volume tank; 22 exhaust port; 23 second flow slot; 24 exhaust valve plate; Pressure cavity exhaust valve plate; 71 medium pressure cavity exhaust valve plate baffle plate; 73 air supply and enthalpy increasing holes.

detailed description

In order to make the purpose, technical solution and advantages of the present invention clearer, the diaphragm assembly for the three-cylinder two-stage compressor and the three-cylinder two-stage compressor 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 present invention provides a diaphragm assembly for a three-cylinder two-stage compressor, including:

The first partition 1, the first partition 1 is provided with a first volume tank 11 for storing refrigerant, and the first volume tank 11 is provided with a flow hole 12;

The second partition 2, the second partition 2 is provided with a second volume tank 21 for storing refrigerant, and the second volume tank 21 is provided with an exhaust port 22;

The first partition plate 1 and the second partition plate 2 are overlapped so that the first volume groove 11 and the second volume groove 21 define a volume cavity 3, and the refrigerant flows into the volume cavity through the exhaust port 22 and flows out of the volume cavity through the flow hole 12 .

The baffle assembly for a three-cylinder two-stage compressor provided in the embodiment of the present invention includes a first baffle 1 and a second baffle 2. In a three-cylinder two-stage compressor, the first baffle 1 is located in the second baffle Below the plate 2, the positions of the two partitions are corresponding. A first storage tank 11 is provided on the first partition 1 for storing refrigerant, and the shape of the first storage tank 11 formed on the first partition 1 can be arbitrary. A second capacity tank 21 is provided on the second partition 2 for storing refrigerant, and the shape formed on the second partition 2 is also arbitrary. The first partition plate 1 and the second partition plate 2 are overlapped so that the first volume tank 11 and the second volume tank 21 define a volume chamber 3, and the volume chamber 3 stores refrigerant. The first volume tank 11 is provided with a flow hole 12, and the second volume tank 21 is provided with an exhaust port 22. The refrigerant in the second low-pressure cylinder in the three-cylinder two-stage compressor enters the volume chamber 3 through the exhaust port 22, and passes through The flow hole 12 discharges from the volume chamber 3 into the medium pressure chamber in the three-cylinder two-stage compressor. It solves the problem that ordinary partition assemblies cannot be used in three-cylinder two-stage compressors. Using this partition assembly, three-cylinder two-stage compressors can normally compress the refrigerant, making the low-cost, high-energy-efficiency three-cylinder The two-stage compressor can be used in the multi-connected air conditioner to replace the scroll compressor, which reduces the cost of the multi-connected air conditioner and improves the energy efficiency of the multi-connected air conditioner.

As a possible implementation, referring to Fig. 5, the second volume tank 21 is provided with an exhaust valve plate 24 and an exhaust valve plate baffle 25, the exhaust valve plate 24 is located below the exhaust port 22, and the exhaust valve The sheet baffle 25 is located below the exhaust valve sheet 24 .

The discharge valve plate 24 is arranged on the lower side of the discharge port 22 in the second volume tank 21, which adjusts the opening area and angle with the discharge port 22 according to the flow requirement of the refrigerant, thereby controlling the flow of the refrigerant. The exhaust valve plate baffle plate 25 is arranged under the exhaust valve plate 24, which can prevent the refrigerant from directly impacting into the volume cavity 3 and prolong the service life of the volume cavity 3.

As a possible implementation manner, the shapes of the first partition 1 and the second partition 2 are symmetrical.

The shapes of the first partition plate 1 and the second partition plate 2 are symmetrical, and the shapes of the first volume tank 11 and the second volume tank 21 are also symmetrical, so that the defined volume chamber 3 is more effective, and it is easier for the refrigerant to flow from the volume chamber. 3 out.

As a possible implementation, at least one threaded hole is provided on the first partition 1; at least one threaded hole is provided on the second partition 2; the position of the threaded hole on the first partition 1 is the same as that on the second partition 2 The positions of the threaded holes are corresponding; the screws 4 pass through the threaded holes on the first partition 1 and the threaded holes on the second partition 2 to overlap and join the first partition and the second partition together.

In this embodiment, the joining of the first partition 1 and the second partition 2 is achieved by using screws 4 to pass through the threaded holes on the first partition 1 and the threaded holes on the second partition 2, Both the plate 1 and the second baffle 2 are provided with at least one threaded hole, preferably more than two, so as to ensure that the connection between the first baffle 1 and the second baffle 2 is fixed and tight, and the baffle assembly is installed in the three-cylinder When used in a two-stage compressor, the refrigerant will not leak out of the volume chamber. Wherein the joint of the first partition 1 and the second partition 2 is not limited to the joint method in this embodiment, it can also be realized by the mutual cooperation of screws and bolts, or the rivet penetrates through the channel provided on the first partition and the second partition. Holes are realized, or the protrusions and grooves are provided on the first partition 1 and the second partition 2 to be engaged by buckling.

As a possible implementation, as shown in Fig. 3 and Fig. 4, the number of flow holes 12 is more than three; the number of exhaust port 22 is at least one; the radial section of the exhaust port 22 is circular.

The number of flow holes 12 is more than three, and they are distributed in different positions in the first volume tank 11, so that the refrigerant in the volume chamber 3 is evenly introduced into the medium-pressure chamber of the three-cylinder two-stage compressor, so that the refrigerant In the medium-pressure chamber, it is fully mixed with the medium-pressure refrigerant introduced through the air supply enthalpy increasing hole. There is at least one exhaust port 22 , which is located in the middle of the second volume tank 21 and is used to introduce the refrigerant in the second low-pressure cylinder into the volume chamber 3 . The radial section of the exhaust port 22 is set as a circle, which is convenient for controlling the flow of refrigerant.

As a possible implementation manner, the total cross-sectional area of the three or more flow holes 12 is larger than the cross-sectional area of the exhaust port 22 .

The total cross-sectional area of the flow holes 12 is larger than that of the exhaust port 22, so that the flow rate of the refrigerant drawn out of the volume chamber 3 is greater than the flow rate of the refrigerant introduced into the volume chamber 3, preventing the volume chamber 3 from being damaged.

As a possible implementation, the first partition 1 is also provided with a first flow groove 13; the second partition 2 is also provided with a second flow groove 23; the center of the first flow groove 13 and the second flow groove 23 on the same axis.

As a possible implementation manner, the cross-sectional areas of the first flow groove 13 and the second flow groove 23 are larger than the cross-sectional area of the exhaust port 22 .

The first flow groove 13 is set on the first partition 1, and the second flow groove 23 is set on the second partition 2. The centers of the first flow groove 13 and the second flow groove 23 are located on the same axis, so that the medium-pressure chamber The refrigerant can enter the high-pressure cylinder through the first circulation groove 13 and the second circulation groove 23 for two-stage compression, and be compressed into a high-temperature and high-pressure refrigerant. The cross-sectional areas of the first flow groove 13 and the second flow groove 23 are larger than the cross-sectional area of the exhaust port 22, so that the refrigerant can enter the high-pressure cylinder quickly for two-stage compression.

The embodiment of the present invention also provides a three-cylinder two-stage compressor, as shown in FIG. 6 , including: a first low-pressure cylinder 5, a second low-pressure cylinder 6; and

The baffle assembly arranged between the first low-pressure cylinder 5 and the second low-pressure cylinder 6 is the above-mentioned baffle assembly.

The above-mentioned baffle assembly is arranged between the first low-pressure cylinder 5 and the second low-pressure cylinder 6, which overcomes the defect that the traditional baffle assembly cannot be used in a three-cylinder two-stage compressor. The three-cylinder two-stage compressor using this baffle assembly The first-stage compressor can operate normally, replacing the scroll compressor and reducing the cost of multi-connected air conditioners.

As a possible implementation, the effective volume of the volume chamber 3 is greater than or equal to the effective volume of the first low-pressure cylinder 5 ; the effective volume of the volume chamber 3 is greater than or equal to the effective volume of the second low-pressure cylinder 6 .

The main structure of the three-cylinder two-stage compressor is shown in Figure 6, including the first partition 1, the second partition 2, the first low-pressure cylinder 5, the second low-pressure cylinder 6, the medium-pressure chamber 7, the high-pressure cylinder 8, the first Three partitions 9, a lower cover plate 10, an exhaust valve plate 71 of the medium-pressure chamber, a baffle plate 72 of the exhaust valve plate of the medium-pressure chamber and a hole 73 for replenishing air and increasing enthalpy.

Wherein, the baffle assembly includes a first baffle 1 and a second baffle 2 located between the first low-pressure cylinder 5 and the second low-pressure cylinder 6 . The three-cylinder two-stage compressor has three cylinders, namely the first low-pressure cylinder 5, the second low-pressure cylinder 6 and the high-pressure cylinder 8. The second low-pressure cylinder 6 introduces the refrigerant after the first-stage compression into the volume chamber 3 of the separator assembly through the exhaust port 22, and then introduces the refrigerant into the medium-pressure chamber 7 through the flow hole 12; The refrigerant is introduced into the medium-pressure chamber 7 through the medium-pressure chamber exhaust valve plate 71 and the medium-pressure chamber exhaust valve plate baffle 72 provided on the medium-pressure chamber. The medium-pressure chamber exhaust valve plate 71 is equivalent to a one-way valve. Adjust the angle and size of the exhaust port on the medium-pressure chamber to control the flow of refrigerant. The medium-pressure chamber exhaust valve baffle 72 changes the air flow of the refrigerant from vertical to horizontal to avoid direct impact of air flow The medium pressure chamber 7 prolongs the service life of the medium pressure chamber 7, changes the flow direction of the refrigerant airflow, and makes the refrigerant introduced into the medium pressure chamber 7 have a higher concentration in the upper part of the medium pressure chamber 7, and the refrigerant with high concentration is sent to The high-pressure cylinder 8 performs compression, which improves the efficiency. The refrigerant introduced from the first low-pressure cylinder 5 and the second low-pressure cylinder 6 is fully mixed with the refrigerant introduced from the supplementary air enthalpy increasing hole 73 on the side wall of the intermediate pressure chamber 7, and the mixed refrigerant passes through the middle pressure chamber 7. The flow groove, the flow groove of the first low-pressure cylinder 5, the first flow groove 13, the second flow groove 23, the flow groove of the second low-pressure cylinder 6, and the flow groove of the third partition plate 9 enter the high-pressure cylinder 8 for two-stage compression , compressed into high temperature and high pressure refrigerant. Wherein, the effective volume of the volume chamber 3 is greater than or equal to the effective volume of the first low-pressure cylinder 5 and greater than or equal to the effective volume of the second low-pressure cylinder 6, so that the refrigerant in the first low-pressure cylinder 5 or the second low-pressure cylinder 6 can be completely discharged into volume chamber 3.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is 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 kind of 1. baffle assembly for being used for three cylinder double-stage compressors, it is characterised in that including：

   First partition, the first partition are provided with the first volume groove for being used for storing refrigerant, set in the first volume groove It is equipped with opening；

   Second partition, the second partition are provided with the second volume groove for being used for storing refrigerant, set in the second volume groove It is equipped with exhaust outlet；

   The first partition and the second partition overlap so that the first volume groove and the second volume groove limit Go out cavity volume, refrigerant flows into the cavity volume by the exhaust outlet, flows out the cavity volume by the opening；It is described Exhaust valve plate and exhaust valve plate baffle plate are provided with second volume groove, the exhaust valve plate is located at below the exhaust outlet, the row Air valve plate baffle plate is located at below the exhaust valve plate；And the first partition and the shape of the second partition are symmetrical.
2. 2. the baffle assembly according to claim 1 for being used for three cylinder double-stage compressors, it is characterised in that the first partition It is provided with least one screwed hole；The second partition is provided with least one screwed hole；The first partition upper screwed hole Position is corresponding with the position of the second partition upper screwed hole；Screw is on the screwed hole and second partition in first partition Screwed hole is by the first partition and the second partition is overlapping is bonded together.
3. 3. the baffle assembly according to claim 1 for being used for three cylinder double-stage compressors, it is characterised in that the opening Quantity is more than three；The quantity of the exhaust outlet is at least one；The radial section of the exhaust outlet is circle.
4. 4. the baffle assembly according to claim 3 for being used for three cylinder double-stage compressors, it is characterised in that three described above The total sectional area of opening is more than the sectional area of the exhaust outlet.
5. 5. the baffle assembly according to claim 1 for being used for three cylinder double-stage compressors, it is characterised in that the first partition On be additionally provided with the first circulation groove；The second circulation groove is additionally provided with the second partition；First circulation groove and the second Groove is centrally located on same axis.
6. 6. the baffle assembly according to claim 5 for being used for three cylinder double-stage compressors, it is characterised in that first circulation The sectional area of groove and second circulation groove is all higher than the sectional area of the exhaust outlet.
7. A kind of 7. three cylinder double-stage compressors, it is characterised in that including：

   First low-pressure cylinder, the second low-pressure cylinder；With

   The baffle assembly being arranged between first low-pressure cylinder and second low-pressure cylinder, the baffle assembly are right It is required that the baffle assembly described in 1 to 6 any one.
8. 8. three cylinders double-stage compressor according to claim 7, it is characterised in that the dischargeable capacity of the cavity volume be more than etc. In the dischargeable capacity of first low-pressure cylinder；The dischargeable capacity of the cavity volume is more than or equal to having for second low-pressure cylinder Imitate volume.