Energy-saving freeze dryer and control method thereof
A technology of freeze dryer and energy-saving board, which is applied in the direction of drying, drying solid materials, and drying solid materials without heating, etc., which can solve problems such as poor lubrication effect, energy waste, and unfavorable stable operation of compressors, so as to improve the use of Effect of life and energy reduction
Active Publication Date: 2011-10-26
SHANGHAI TOFFLON SCI & TECH CO LTD
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Problems solved by technology
As far as the freeze dryer is concerned, it needs external heat to heat the plate layer during operation, and at the same time it also needs to provide cooling capacity to cool the refrigerant vapor, resulting in a huge waste of energy
In addition, during the operation of the freeze dryer, the compressor is generally in an over-working condition, the exhaust temperature is relatively high, the temperature of the lubricating oil is relatively high, the viscosity of the lubricating oil is relatively low, and the lubrication effect becomes poor, which is not conducive to the operation of the compressor. Stable operation
Method used
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[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0026] figure 1 It is a structural schematic diagram of the energy-saving freeze-drying machine of the present invention.
[0027] See figure 1 , the energy-saving freeze-drying machine of the present invention comprises a front box 1, and the plate layer 2 is arranged in the said front box 1, and said plate layer 2 and circulating pump 4, front box electric heating 5, front box circulating solenoid valve 6, front box The box-plate heat exchanger 7 is connected, and the front box-plate heat exchanger 7 is connected with the front box expansion valve 14, the front box liquid supply solenoid valve 13, the condenser 12, and the compressor 11; a rear box 3, the rear box 3 is connected to the vacuum pump 10 through the diaphragm valve 9, and a coil is arranged in the rear box 3, and the coil is connected to the liquid supply solenoid valve 15 of the rear b...
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The invention discloses an energy-saving freeze dryer and a control method. The freeze dryer comprises a front box and a rear box, wherein the front box is internally provided with a ply; the ply is connected with a circulating pump, a front box electrical heating, a front box circulating electromagnetic valve and a front box plate-type heat exchanger; the front box plate-type heat exchanger is connected with a front box expansion valve, a front box feed liquid electromagnetic valve, a condenser and a compressor; the rear box is internally provided with a coil tube which is connected with a rear box feed liquid electromagnetic valve, a rear box expansion valve and a condenser; the compressor is connected with the condenser; the front box is connected with the rear box through a butterfly valve, wherein the energy-saving freeze dryer also comprises an energy-saving plate-type heat exchanger which is connected with the compressor through a second electromagnetic valve and is connected with the circulating pump through a third electromagnetic valve; the outlet of the compressor is provided with a discharge temperature probe; and the outlet of the condenser is provided with a condenser outlet temperature probe. The energy-saving freeze dryer and the control method thereof provided by the invention can lower energy consumption, are beneficial for stable operation of the compressor and prolong the service life of the compressor.
Description
technical field [0001] The invention relates to a freeze dryer and a control method thereof, in particular to an energy-saving freeze dryer and a control method thereof. Background technique [0002] The refrigeration system of the freeze dryer consists of a compressor, a condenser, a front tank liquid supply solenoid valve, a front tank expansion valve, a rear tank liquid supply solenoid valve, a rear tank expansion valve, a front tank plate heat exchanger and a rear tank coil. In the cooling stage of the plate layer, the solenoid valve for liquid supply in the front box is opened, and the solenoid valve for liquid supply in the rear box is closed, and the refrigerant evaporates in the plate heat exchanger of the front box. During the sublimation stage, the rear tank liquid supply solenoid valve is open, while the front tank liquid supply solenoid valve is closed, and the refrigerant evaporates in the rear tank coil. During the operation of the refrigeration system, the co...
Claims
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IPC IPC(8): F26B5/06F26B25/00
Inventor 郑效东
Owner SHANGHAI TOFFLON SCI & TECH CO LTD