An intelligent compressor unit

Abstract

The present invention relates to an intelligent compressor unit, which includes a gas-liquid separator. The gas-liquid separator is provided with a gas-liquid separator steam return port. The gas-liquid separator is connected with a first pipeline and a second pipeline. The second pipeline is connected to a four-way reversing valve. The four-way reversing valve is connected with a third pipeline, a fourth pipeline and a fifth pipeline. The second pipeline and the third pipeline are communicated with each other. The fourth pipeline and the fifth pipeline are connected and communicated with each other. The intelligent compressor unit further includes a compressor. The compressor includes an exhaust port. The compressor includes a first cylinder and a second cylinder. The other end of the third pipeline is connected to a first suction port of the first cylinder. The other end of the first pipeline is connected to a second suction port of the second cylinder. The other end of the fourth pipeline is connected to the exhaust port of the first cylinder. The intelligent compressor unit of the present invention is an intelligent compressor unit with variable working conditions and free combination, which can realize single-stage and double-stage operation, reduce the equipment investment cost and reduce the installation space.

Description

Technical Field

[0001] The present invention relates to refrigeration and cold storage technologies, and particularly to an intelligent compressor unit. Background Art

[0002] Currently, with the development of the 14th Five-Year Plan for the cold chain, the "last mile" of the cold chain refers to cold storages configured in commercial facilities such as supermarkets and restaurants for temporary storage of food before retail or consumption, that is, supermarket freezers, etc. In existing supermarket freezers, the stored goods and operating conditions are variable. Generally, there are freezers for fruits and vegetables, meats, fish and shrimps, which are separately set, with different temperature ranges, and multiple sets of compressor units are used.

[0003] However, this multiple sets of freezers or refrigeration systems, on the one hand, increase the investment cost and the space for arranging goods, and on the other hand, with a larger number of compressors, the failure rate will also increase. Summary of the Invention

[0004] The purpose of the present invention is to solve the above problems and provide an intelligent compressor unit.

[0005] To achieve the above purpose, an intelligent compressor unit includes a gas-liquid separator, the gas-liquid separator is provided with a gas-liquid separator return steam port, the gas-liquid separator is connected with a first pipeline and a second pipeline, the second pipeline is connected to a four-way reversing valve, the four-way reversing valve is connected with a third pipeline, a fourth pipeline and a fifth pipeline, the second pipeline and the third pipeline are communicated, the fourth pipeline and the fifth pipeline are connected and communicated, and further includes a compressor, the compressor includes an exhaust port, the compressor includes a first cylinder and a second cylinder, the other end of the third pipeline is connected to a first suction port of the first cylinder, the other end of the first pipeline is connected to a second suction port of the second cylinder, and the other end of the fourth pipeline is connected to the exhaust port of the first cylinder.

[0006] According to one aspect of the present invention, a check valve is provided on the fifth pipeline.

[0007] The working principle of the intelligent compressor unit of the present invention: mainly through the on and off states of the four-way reversing valve, the single and double stage conversion of the two-cylinder compressor is realized; and the compressor drive motor is used in cooperation with a DC variable speed or frequency converter to achieve the optimal matching of the refrigeration load, operating conditions and compressor load, improve the refrigeration efficiency, and save more than 30% of energy.

[0008] The intelligent compressor unit of the present invention, an intelligent compressor unit with one machine having multiple operating conditions and free combination, realizes single-stage and double-stage operations, reduces equipment investment costs, and reduces installation space. The intelligent compressor unit with multiple functions reduces the number of compressors and the failure rate of the refrigeration system. The intelligent compressor unit with one machine having multiple operating conditions and free combination meets the needs of different seasons and the usage loads of end customers, and realizes a perfect conversion between high-temperature fruit and vegetable cold storages and low-temperature frozen product cold storages. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 Schematically showing the structural diagram of an intelligent compressor unit according to an embodiment of the present invention;

[0010] Figure 2 Schematically showing the structure of an intelligent compressor unit according to an embodiment of the present invention Figure 2 . DETAILED DESCRIPTION OF THE EMBODIMENTS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0012] The present invention will be described in detail below in conjunction with the drawings and specific embodiments. The embodiments cannot be elaborated one by one here, but the embodiments of the present invention are not limited to the following embodiments.

[0013] Combined Figure 1 and Figure 2 As shown, the present invention provides an intelligent compressor unit, including a gas-liquid separator 2. The gas-liquid separator 2 is provided with a gas-liquid separator return steam port 1. The gas-liquid separator 2 is connected to a first pipeline 3 and a second pipeline 4. The second pipeline 4 is connected to a four-way reversing valve 5. The four-way reversing valve 5 is connected to a third pipeline 6, a fourth pipeline 7, and a fifth pipeline 8. The second pipeline 4 and the third pipeline 6 are connected and communicated. The fourth pipeline 7 and the fifth pipeline 8 are connected and communicated. It further includes a compressor 9. The compressor 9 includes an exhaust port 91. The compressor 9 includes a first cylinder and a second cylinder. The other end of the third pipeline 6 is connected to the first suction port 92 of the first cylinder. The other end of the first pipeline 3 is connected to the second suction port 93 of the second cylinder. The other end of the fourth pipeline 7 is connected to the exhaust port of the first cylinder. A check valve 81 is provided on the fifth pipeline 8.

[0014] The working principle of the intelligent compressor unit of the present invention with two cylinders operating in parallel or in parallel: As Figure 1As shown in the figure, the refrigerant gas returns from the end evaporator to the vapor return port 1 of the gas-liquid separator. After being separated by the gas-liquid separator 2, it enters the second suction port 93 of the second cylinder through the first pipeline 3 and is connected to the four-way reversing valve 5 through the second pipeline 4. At this time, the four-way reversing valve 5 is as Figure 1 in the energized state. The second pipeline 4 and the third pipeline 6 are connected, and the fourth pipeline 7 and the fifth pipeline 8 are connected. The refrigerant gas flows through the second pipeline 4, passes through the four-way reversing valve 5, and flows to the third pipeline 6, and is sucked into the first suction port 92 of the first cylinder of the compressor 9. The exhaust pipe of the compressor 9 flows through the fourth pipeline 7 to the four-way reversing valve 5, then through the fifth pipeline 8, enters the compressor through the check valve 81, and is exhausted from the compressor exhaust port 91 into the condenser and other refrigeration systems, realizing the parallel or parallel operation of the two compressor cylinders and operating under high-temperature load in the same working condition.

[0015] The working principle of the intelligent compressor unit of the present invention for the two-cylinder two-stage or relay operation is as follows: Figure 2 As shown in the figure, the refrigerant gas returns from the end evaporator to the vapor return port 1 of the gas-liquid separator. After being separated by the gas-liquid separator 2, it enters the second suction port 93 of the second cylinder through the first pipeline and is connected to the four-way reversing valve 5 through the second pipeline 4. At this time, the four-way reversing valve 5 is as Figure 2 in the de-energized state. The second pipeline 4 and the third pipeline 6 are connected, and the fourth pipeline 7 and the fifth pipeline 8 are connected. The refrigerant gas flows through the second pipeline 4, passes through the four-way reversing valve 5 and flows to the third pipeline 6, and is blocked at the check valve 81 and not conducted. The exhaust pipe of the first stage of the compressor 9 flows through the fourth pipeline 7 to the four-way reversing valve 5, then through the fifth pipeline 8, and is sucked into the first cylinder after flowing through the fifth pipeline 8, enters the compressor, and is compressed and then exhausted for the second time to the exhaust pipe of the compressor unit, realizing the series or relay operation of the two compressor cylinders and operating under low-temperature load in the same working condition.

[0016] The working principle of the intelligent compressor unit of the present invention is mainly to realize the single-stage and two-stage conversion of the two-cylinder compressor through the energized and de-energized states of the four-way reversing valve; and the compressor drive motor is used in combination with a DC variable speed or frequency converter to realize the optimal matching of the refrigeration load, operating conditions and compressor load, improve the refrigeration efficiency, and save more than 30% of energy.

[0017] The intelligent compressor unit of the present invention is an intelligent compressor unit with one machine having multiple variable working conditions and free combination, which realizes single-stage and two-stage operations, reduces the equipment investment cost and the installation space. The intelligent compressor unit with multiple functions reduces the number of compressors and the failure rate of the refrigeration system. The intelligent compressor unit with one machine having multiple variable working conditions and free combination meets the needs of different seasons and the use loads of end customers, and realizes a perfect conversion between high-temperature fruit and vegetable cold storages and low-temperature frozen product cold storages.

[0018] The above is only one embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An intelligent compressor unit, characterized in that, It includes a gas-liquid separator (2), the gas-liquid separator (2) is provided with a gas-liquid separator steam return port (1), the gas-liquid separator (2) is connected with a first pipeline (3) and a second pipeline (4), the second pipeline (4) is connected with a four-way reversing valve (5), the four-way reversing valve (5) is connected with a third pipeline (6), a fourth pipeline (7) and a fifth pipeline (8), the second pipeline (4) and the third pipeline (6) are communicated with each other, the fourth pipeline (7) and the fifth pipeline (8) are connected and communicated with each other, and it further includes a compressor (9), the compressor (9) includes an exhaust port (91), the compressor (9) includes a first cylinder and a second cylinder, the other end of the third pipeline (6) is connected to a first suction port (92) of the first cylinder, the other end of the first pipeline (3) is connected to a second suction port (93) of the second cylinder, and the other end of the fourth pipeline (7) is connected to the exhaust port of the first cylinder.

2. The intelligent compressor unit according to claim 1, characterized in that A check valve (81) is provided on the fifth pipeline (8).

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