Compressed air freeze dryer with heat regenerator

Abstract

The utility model relates to a compressed air freeze dryer with a heat regenerator, which comprises an air inlet pipe, the heat regenerator, a normal-temperature gas connecting pipe, an evaporation heat exchanger, a low-temperature refrigerant return pipe, a refrigeration compressor, a high-temperature refrigerant connecting pipe, a condensation radiator, a cooling fan, a normal-temperature refrigerant connecting pipe, an expansion valve and a low-temperature refrigerant connecting pipe, the device comprises a low-temperature wet gas connecting pipe, a gas-liquid separator, a low-temperature dry gas connecting pipe, an automatic drain valve and a normal-temperature dry gas exhaust pipe. By means of the device, normal-temperature gas can be exhausted under the condition that the freeze dryer inputs compressed air with the high temperature, and meanwhile the dew point of the freeze dryer is kept at the low temperature.

Description

Technical Field

[0001] The invention relates to a gas drying device, in particular to a compressed air freeze drying machine with a heat regenerator. Background Art

[0002] When the air intake temperature is high, the traditional refrigeration dryer needs to increase the power of the refrigerator or reduce the air intake flow rate to fully cool the air being treated and achieve a lower dew point. At the same time, because the air is lowered to the dew point temperature, the direct exhaust temperature is low, which is prone to condensation on the pipe. If it is heated, additional heating and energy consumption are required. Summary of the invention

[0003] In view of the above problems existing in the prior art, the purpose of the utility model is to provide a compressed air freeze dryer with a regenerator. By adding a regenerator, the intake air can be pre-cooled and the exhaust air can be reheated and heated without consuming additional energy.

[0004] The technical solution for achieving the above-mentioned purpose is: a compressed air freeze dryer with a regenerator, comprising an air inlet pipe, a regenerator, a normal temperature gas connecting pipe, an evaporative heat exchanger, a low temperature refrigerant return pipe, a refrigeration compressor, a high temperature refrigerant connecting pipe, a condensing radiator, a cooling fan, a normal temperature refrigerant connecting pipe, an expansion valve, a low temperature refrigerant connecting pipe, a low temperature humid gas connecting pipe, a gas-liquid separator, a low temperature dry gas connecting pipe, an automatic drain valve, and a normal temperature dry gas exhaust pipe.

[0005] The air inlet pipe is connected to the normal temperature gas connecting pipe through an independent pipeline inside the regenerator.

[0006] The normal temperature gas connecting pipe and the low temperature humid gas connecting pipe are connected through independent internal pipelines of the evaporative heat exchanger.

[0007] The low-temperature refrigerant return pipe is connected to the low-temperature refrigerant connecting pipe through an independent internal pipeline of the evaporative heat exchanger.

[0008] The low-temperature refrigerant return pipe is connected to the suction port of the refrigeration compressor.

[0009] The high-temperature refrigerant connecting pipe is connected to the exhaust port of the refrigeration compressor.

[0010] The high-temperature refrigerant connecting pipe and the normal-temperature refrigerant connecting pipe are connected through independent internal pipes of the condensing radiator.

[0011] A cooling fan is provided on the side of the condensing radiator.

[0012] The normal temperature refrigerant connecting pipe is connected to the low temperature refrigerant connecting pipe through an expansion valve.

[0013] The low-temperature humid gas connecting pipe is connected to the low-temperature dry gas connecting pipe through the gas-liquid separator.

[0014] The low-temperature dry gas connecting pipe is connected to the normal-temperature dry gas exhaust pipe through an independent pipeline inside the regenerator.

[0015] At the bottom of the gas-liquid separator, there is an automatic drain valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0017] Figure 1 The present invention is a schematic structural diagram of a compressed air freeze dryer with a heat regenerator.

[0018] Among them: 1—air inlet pipe, 2—heat regenerator, 3—normal temperature gas connecting pipe, 4—evaporative heat exchanger, 5—low temperature refrigerant return pipe, 6—refrigeration compressor, 7—high temperature refrigerant connecting pipe, 8—condensation radiator, 9—cooling fan, 10—normal temperature refrigerant connecting pipe, 11—expansion valve, 12—low temperature refrigerant connecting pipe, 13—low temperature humid gas connecting pipe, 14—gas-liquid separator, 15—low temperature dry gas connecting pipe, 16—automatic drain valve, 17—normal temperature dry gas exhaust pipe. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0020] See also Figure 1 , the present invention provides a technical solution:

[0021] A compressed air freeze dryer with a regenerator comprises an air inlet pipe 1, a regenerator 2, a normal temperature gas connecting pipe 3, an evaporative heat exchanger 4, a low temperature refrigerant return pipe 5, a refrigeration compressor 6, a high temperature refrigerant connecting pipe 7, a condensing radiator 8, a cooling fan 9, a normal temperature refrigerant connecting pipe 10, an expansion valve 11, a low temperature refrigerant connecting pipe 12, a low temperature humid gas connecting pipe 13, a gas-liquid separator 14, a low temperature dry gas connecting pipe 15, an automatic drain valve 16, and a normal temperature dry gas exhaust pipe 17.

[0022] The air inlet pipe 1 is connected to the normal temperature gas connecting pipe 3 through an independent pipeline inside the regenerator 2 .

[0023] The normal temperature gas connecting pipe 3 and the low temperature humid gas connecting pipe 13 are connected through independent pipes inside the evaporative heat exchanger 4 .

[0024] The low-temperature refrigerant return pipe 5 is connected to the low-temperature refrigerant connecting pipe 12 through an independent pipeline inside the evaporative heat exchanger 4 .

[0025] The low-temperature refrigerant return pipe 5 is connected to the air intake port of the refrigeration compressor 6 .

[0026] The high-temperature refrigerant connecting pipe 7 is connected to the exhaust port of the refrigeration compressor 6 .

[0027] The high-temperature refrigerant connecting pipe 7 and the normal-temperature refrigerant connecting pipe 10 are connected through independent pipes inside the condensing radiator 8 .

[0028] A cooling fan 9 is provided on the side of the condensing radiator 8 .

[0029] The normal temperature refrigerant connecting pipe 10 is connected to the low temperature refrigerant connecting pipe 12 through the expansion valve 11 .

[0030] The low-temperature moist gas connecting pipe 13 is connected to the low-temperature dry gas connecting pipe 15 via the gas-liquid separator 14 .

[0031] The low-temperature dry gas connection pipe 15 is connected to the normal-temperature dry gas exhaust pipe 17 through an independent pipeline inside the regenerator 2 .

[0032] An automatic drain valve 16 is provided at the bottom of the gas-liquid separator 14 .

[0033] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A compressed air freeze dryer with a regenerator, characterized in that: Including air inlet pipe, heat regenerator, normal temperature gas connecting pipe, evaporative heat exchanger, low temperature refrigerant return pipe, refrigeration compressor, high temperature refrigerant connecting pipe, condensing radiator, cooling fan, normal temperature refrigerant connecting pipe, expansion valve, low temperature refrigerant connecting pipe, low temperature humid gas connecting pipe, gas-liquid separator, low temperature dry gas connecting pipe, automatic drain valve, normal temperature dry gas exhaust pipe; Wherein, the air inlet pipe is connected to the normal temperature gas connecting pipe through an independent pipeline inside the regenerator; The normal temperature gas connecting pipe and the low temperature humid gas connecting pipe are connected through independent internal pipes of the evaporative heat exchanger; The low-temperature refrigerant return pipe is connected to the low-temperature refrigerant connecting pipe through an independent internal pipeline of the evaporative heat exchanger; The low-temperature refrigerant return pipe is connected to the air intake port of the refrigeration compressor; The high-temperature refrigerant connecting pipe is connected to the exhaust port of the refrigeration compressor; The high-temperature refrigerant connecting pipe is connected to the normal-temperature refrigerant connecting pipe through an independent internal pipeline of the condensing radiator; The cooling fan is provided on the side of the condensing radiator; The normal temperature refrigerant connecting pipe is connected to the low temperature refrigerant connecting pipe through the expansion valve; The low-temperature moist gas connecting pipe is connected to the low-temperature dry gas connecting pipe through the gas-liquid separator; The low-temperature dry gas connecting pipe is connected to the normal-temperature dry gas exhaust pipe through an independent pipeline inside the regenerator; The automatic drain valve is arranged at the bottom of the gas-liquid separator.

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