Parallel compressor system for tobacco leaf baking machine

Abstract

The utility model discloses a parallel compressor system for a tobacco leaf baking machine, which comprises a first compressor, a second compressor, an oil separator, a condenser, a throttling component, an evaporator and a gas separator, the parallel unit, the oil separator, the condenser, the throttling component, the evaporator and the gas separator are sequentially connected in series to form a loop, an oil return pipe of the oil separator is connected with the first compressor, the second compressor and the gas outlet end of the gas separator through oil guide branch pipes, and each oil guide branch pipe is provided with an oil return electromagnetic valve. According to the utility model, the compressor is connected in parallel, so that the unit can drive the curing barn to meet larger-range heat requirements. And two or more compressors share one heat pump system, so that the floor area of the parallel compressor system is smaller than that of a single compressor system under the condition of the same heating capacity, and the space is utilized more efficiently.

Description

Technical Field

[0001] The utility model relates to the technical field related to tobacco leaf baking, in particular to a parallel compressor system for a tobacco leaf baking machine. Background Art

[0002] At present, the main design form of domestic heat pump tobacco baking system is single compressor heat pump system.

[0003] The single compressor heat pump system is mainly a machine that uses one compressor to drive one heat pump system. This solution is suitable for scenarios where the area around the oven is wide and the heat demand of the oven is small. If the heat demand of the oven is large and a single machine cannot meet the heat demand, it is necessary to install one machine with multiple systems or multiple machines to meet the demand. If the area around the oven is small, but the heat required by the oven is large, the existing single compressor heat pump system is difficult to meet the demand. Utility Model Content

[0004] In order to solve the problem that a single machine cannot meet the heat demand in the prior art, it is necessary to install a machine with multiple systems or multiple machines to meet the demand. If the area around the curing room is small, but the heat required by the curing room is large, the existing single compressor heat pump system is difficult to meet the demand. The utility model provides a parallel compressor system for a tobacco leaf curing machine.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a parallel compressor system for a tobacco leaf roasting machine, comprising a first compressor, a second compressor, an oil separator, a condenser, a throttling component, an evaporator and a gas separator, wherein the first compressor and the second compressor are arranged in parallel to form a parallel unit, and the

[0007] The parallel unit, oil separator, condenser, throttling component, evaporator and gas separator are connected in series to form a loop, and the oil return pipe of the oil separator is connected to the gas outlet ends of the first compressor, the second compressor and the gas separator respectively through the oil guide branch pipe, and each oil guide branch pipe is provided with an oil return solenoid valve.

[0008] As a preferred technical solution of the utility model, the oil guide branch pipe is provided with a capillary tube which is arranged in series with the oil return solenoid valve.

[0009] As a preferred technical solution of the present invention, the second compressor is started only when the maximum power of the first compressor cannot meet the demand.

[0010] As a preferred technical solution of the present utility model, the exhaust ports of the first compressor and the second compressor are both provided with a one-way valve.

[0011] As a preferred technical solution of the present utility model, the installation direction of the one-way valve is consistent with the exhaust direction.

[0012] The beneficial effects of the utility model are:

[0013] This type of parallel compressor system for tobacco leaf drying machines uses multiple compressors to drive a heat pump system. By connecting compressors in parallel, the unit can drive the heat demand of a wider range of drying rooms. And because two or more compressors share a heat pump system, under the same heating capacity, the parallel compressor system occupies less space than the single compressor system, making more efficient use of space. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation on the present invention. In the accompanying drawings, FIG1 is a schematic diagram of the structure of a parallel compressor system for a tobacco leaf baking machine of the present invention.

[0015] In the figure: 1. first compressor; 2. second compressor; 3. oil separator; 4. condenser; 5. throttling component; 6. evaporator; 7. gas separator; 8. oil branch pipe; 9. oil return solenoid valve; 10. capillary tube; 11. one-way valve. DETAILED DESCRIPTION

[0016] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0017] Embodiment: As shown in FIG1 , the utility model is a parallel compressor system for a tobacco leaf baking machine, comprising a first compressor 1, a second compressor 2, an oil separator 3, a condenser 4, a throttling component 5, an evaporator 6 and a gas separator 7, wherein the first compressor 1 and the second compressor 2 are arranged in parallel to form a parallel unit, and the parallel unit, the oil separator 3, the condenser 4, the throttling component 5, the evaporator 6 and the gas separator 7 are sequentially connected in series to form a loop, and the oil return pipe of the oil separator 3 is connected to the gas outlet of the first compressor 1, the second compressor 2 and the gas separator 7 through the oil guide branch pipe 8, and each oil guide branch pipe 8 is provided with an oil return solenoid valve 9. Use multiple compressors to drive a heat pump system. Through parallel compressors, the unit can drive a wider range of heat demand in the baking room. And because two or more compressors share a heat pump system, under the same heating capacity, the parallel compressor system occupies less space than the single compressor system, and uses space more efficiently. Among them, n compressors can also be connected in parallel between the first compressor 1 and the second compressor 2.

[0018] The oil guide branch pipe 8 is provided with a capillary tube 10 which is arranged in series with the oil return solenoid valve. When some compressors are running and some compressors are not running, the first compressor 1 is started.

[0019] Take the case where the second compressor 2 is not started as an example: when the first compressor 1 is started, the corresponding oil return solenoid valve 9 is opened; when the second compressor 2 is not started, the corresponding oil return solenoid valve 9 is closed. By only opening the oil return solenoid valve of the corresponding running unit, the refrigerant oil discharged from the first compressor 1 returns to the first compressor 1 through the oil separator, preventing the refrigerant oil from accumulating on the return air pipeline of other compressors after the unit has been running for a long time, thus ensuring the reliability of the compressor oil return.

[0020] The second compressor 2 is started only when the maximum power of the first compressor 1 cannot meet the demand.

[0021] The exhaust ports of the first compressor 1 and the second compressor 2 are both provided with a one-way valve 11. The installation direction of the one-way valve 11 is consistent with the exhaust direction. This does not affect the normal operation of the first compressor, and can ensure that the refrigerant backflow does not occur when the second compressor 2 is not started or the frequency is low.

[0022] When working, this parallel compressor system for tobacco leaf drying machines uses multiple compressors to drive a heat pump system. Through parallel compressors, the unit can drive the heat demand of a wider range of drying rooms. And because two or more compressors share a heat pump system, under the same heating capacity, the parallel compressor system occupies less space than the single compressor system, making more efficient use of space;

[0023] When some compressors are running and some compressors are not running, take the case where the first compressor 1 is started and the second compressor 2 is not started as an example: when the first compressor 1 is started, the corresponding oil return solenoid valve 9 is opened; when the second compressor 2 is not started, the corresponding oil return solenoid valve 9 is closed. By only opening the oil return solenoid valve of the corresponding running unit, the refrigeration oil discharged from the first compressor 1 returns to the first compressor 1 through the oil separator, preventing the refrigeration oil from accumulating on the return air pipeline of other compressors after the unit has been running for a long time, thereby ensuring the reliability of the compressor oil return.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A parallel compressor system for a tobacco leaf drying machine, characterized in that: The invention comprises a first compressor (1), a second compressor (2), an oil separator (3), a condenser (4), a throttling component (5), an evaporator (6) and a gas separator (7), wherein the first compressor (1) and the second compressor (2) are arranged in parallel to form a parallel unit, and the parallel unit, the one-way valve (11), the oil separator (3), the condenser (4), the throttling component (5), the evaporator (6) and the gas separator (7) are sequentially connected in series to form a loop, and the oil return pipe of the oil separator (3) is respectively connected to the gas outlet ends of the first compressor (1), the second compressor (2) and the gas separator (7) via an oil guide branch pipe (8), and each oil guide branch pipe (8) is provided with an oil return solenoid valve (9).

2. A parallel compressor system for a tobacco leaf drying machine according to claim 1, characterized in that: The oil guide branch pipe (8) is provided with a capillary tube (10) which is arranged in series with the oil return solenoid valve.

3. A parallel compressor system for a tobacco leaf drying machine according to claim 1, characterized in that: The second compressor (2) is started only when the maximum power of the first compressor (1) cannot meet the demand.

4. A parallel compressor system for a tobacco leaf drying machine according to claim 2, characterized in that: The exhaust ports of the first compressor (1) and the second compressor (2) are both provided with a one-way valve (11).

5. A parallel compressor system for a tobacco leaf drying machine according to claim 1, characterized in that: The installation direction of the one-way valve (11) is consistent with the exhaust direction.

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