CN208547240U - Two-stage Compression high temperature drying unit - Google Patents

Abstract

A kind of Two-stage Compression high temperature drying unit, it is related to heat-pump apparatus and facility, including compressor B, the one end compressor B is connect with Liquid segregation device B by pipeline, the compressor B other end is connect with condenser B by pipeline, axial flow blower C is equipped on the left of condenser B, condenser B is connect with the one end evaporator B by pipeline and this pipeline is equipped with expansion valve B, the evaporator B other end is connect with gas-liquid separator B by pipeline, condenser A is equipped with below gas-liquid separator B, this device has two groups of compressibilities, two groups of compressibilities are respectively primary system and level two, when evaporating temperature is higher, only operation level two, complete machine Energy Efficiency Ratio with higher, and evaporating temperature it is lower when, for the high temperature output for maintaining level two, start primary system, higher evaporating temperature is provided for level two, whole efficiency at this time Decline than, but still higher temperature can be maintained to export, can be applied to the place of high temperature demands.

Description

Two-stage Compression high temperature drying unit

Technical field:

The utility model relates to heat-pump apparatus and facility, and in particular to a kind of Two-stage Compression high temperature drying unit.

Background technique:

As global energy crisis aggravates surging with energy conservation and environmental protection cry, traditional fire coal, fuel oil, combustion gas, firewood pot Furnace because it is at high cost, pollution is big, safety is poor, will be gradually by limitation using until final eliminate, this is the general trend of events of environmental protection and energy saving Become.Air source heat pump dryer as a Xiang Gaoxiao, energy-saving and environmental protection, safety new technology, it is rapid in drying field in recent years It is widely applied.Air source heat pump is a kind of principle using inverse Carnot cycle, by the heat energy transfer of low level heat energy a to high position The device of heat source.Due to this property of heat pump, it is used to transmit the thermal energy in cryogenic object in high temp objects, then high temperature Object is used to heat water or heating or the drying for material, and heat is made to be fully used.Heat pump application is in stoving process Basic principle is exactly the low temperature heat energy absorbed in air using evaporator with heat pump, or the hot-air of recycling drying box passes through pressure Contracting machine compresses to obtain high temperature heat, and the air circulation in drying box is heated to 60 degree or more (as used special refrigerant can be with Air is heated to 80 degree or more), by drying materials.Whole school's heat pump dryer can also pass through system during heating up dry Cold dehumidifying operation, the moisture in material is removed, final to realize the continuous drying of material.Heat pump drying unit can be applied to each row Each industry, such as drying corps --- agaric, dried bamboo shoots, dried vegetable, jujube, all kinds of dried fruits；Chinese medicine drying --- ginseng, fructus lycii, Honeysuckle etc.；Industrial crops drying --- tobacco, tealeaves, mushroom etc.；Marine product drying --- dried shrimps, dried fish, seaweed etc., industry Using --- timber stoving, plating, printing, dyeing etc. dry product, not only energy-saving and environmental protection, Er Qiexiang using heat pump unit For using natural air drying or the Kiln seasoned product of coal, heat pump drying can accomplish that drying temperature is stablized, while because of heat pump drying Temperature is lower, and the color and fragrance that can be very good to keep material drying original further mention on the basis of energy conservation and environmental protection The economic of material drying has been risen to receive.

Existing Drying unit mostly uses coal-fired, combustion gas or electric heating drying, and high pollution, highly energy-consuming, safety is poor, drying effect Rate is low, and material is not good after drying.Also there are the equipment using heat pump drying, but existing heat pump dryer currently on the market Group, is confined to the condensation temperature limitation of common heat pump assembly, and highest drying temperature can only generally be controlled within 60 degree, such as be dried Temperature is higher than 60 degree, will exceed the normal range of operation of common refrigerant, as a result can make compressor exhaust temperature and exhaust pressure Power steeply rises, and system will be unable to work normally, while can make to press lubricant deterioration, and long-play will lead to compressor and burn. Therefore, existing common heat pump drying equipment can be only applied to the drying occasion of middle low temperature, more demanding for drying temperature Application field is difficult to enter, and in order to solve the above-mentioned technical problem, spy proposes a kind of new technical solution.

Utility model content:

The purpose of this utility model is to overcome above-mentioned the shortcomings of the prior art places, and provide a kind of twin-stage pressure Contracting high temperature drying unit.

The technical solution adopted in the utility model are as follows: a kind of Two-stage Compression high temperature drying unit, including compressor B, compression The one end machine B is connect with Liquid segregation device B by pipeline, and the compressor B other end is connect with condenser B by pipeline, and condenser B is left Side is connect equipped with the one end axial flow blower C, condenser B and evaporator B by pipeline and this pipeline is equipped with expansion valve B, evaporator B The other end is connect with gas-liquid separator B by pipeline, and condenser A is equipped with below gas-liquid separator B, is equipped with axis below condenser A Flow fan A, the one end condenser A are connect with oil eliminator by pipeline, and oil eliminator is connect with compressor A by pipeline, compression Machine A is connect with gas-liquid separator A by pipeline, and gas-liquid separator A is connect with evaporator A by pipeline, is equipped on the left of evaporator A Axial flow blower B, evaporator A are connect with condenser A by pipeline and this pipeline is equipped with expansion valve A.

The beneficial effects of the utility model are: 1, this device has two groups of compressibilities, two groups of compressibilities are respectively level-one System and level two only run level two, complete machine Energy Efficiency Ratio with higher when evaporating temperature is higher, and evaporate temperature When spending lower, for the high temperature output for maintaining level two, starts primary system, provides higher evaporating temperature for level two, Whole Energy Efficiency Ratio is declined at this time, but still higher temperature can be maintained to export, and can be applied to the place of high temperature demands.2, this Firsts and seconds system in device all uses better simply heat pump system, and overall operation is reliable, and single-stage operational energy efficiency is high, two-stage There can be the temperature of superelevation to export when operation in low circumstance temperature again.

Detailed description of the invention:

Fig. 1 is the utility model structure diagram.

Fig. 2 is the utility model single level system starting pinciple figure.

Fig. 3 is the utility model two-stage system starting pinciple figure.

Specific embodiment:

The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；In order to better illustrate this embodiment, attached Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；To those skilled in the art, The omitting of some known structures and their instructions in the attached drawings are understandable.

Referring to Fig.1, a kind of Two-stage Compression high temperature drying unit, including compressor B9, the one end compressor B9 and Liquid segregation Device B14 is connected by pipeline, and the compressor B9 other end is connect with condenser B10 by pipeline, and axis stream is equipped on the left of condenser B10 The one end blower C11, condenser B10 and evaporator B13 is connect by pipeline and this pipeline is equipped with expansion valve B12, evaporator B13 The other end is connect with gas-liquid separator B14 by pipeline, and condenser A3, the lower section condenser A3 are equipped with below gas-liquid separator B14 Equipped with axial flow blower A4, the one end condenser A3 is connect with oil eliminator 2 by pipeline, and oil eliminator 2 and compressor A1 pass through pipe Line connection, compressor A1 are connect with gas-liquid separator A8 by pipeline, and gas-liquid separator A8 is connect with evaporator A6 by pipeline, Axial flow blower B7 is equipped on the left of evaporator A6, evaporator A6 is connect with condenser A3 by pipeline and this pipeline is equipped with expansion valve A5。

Specific embodiment is as follows: the present apparatus includes two compressors, four heat exchangers, two expansion valves, two axis streams Blower, a centrifugal blower, an oil eliminator 4, two gas-liquid separators, a set of PLC controller.Primary cycle system is by one A compressor, an oil eliminator, two heat exchangers, an expansion valve, a gas-liquid separator composition, primary system is heat source Reinforce side to be mainly used in the lower situation of circumstance temperature using general refrigerant, provides higher evaporation temperature for level two Degree, makes level two be able to maintain higher leaving air temp；Level two by a compressor, two heat exchangers, an expansion valve, One gas-liquid separator composition, level two connect user and use side, and the condenser of evaporator and primary system is arranged side by side, share One high-power circulating fan, when primary system work, the condenser side temperature of primary system can reach 40 degree or more, can be with The running environment of a high temperature is provided for the evaporator of level two, and level two is had and is steamed in height using extraordinary refrigerant The characteristic of high condensation temperature is exported at a temperature of hair, can be exported up to 90 degree of leaving air temp or 90 degree of hot water, be can be applied to height Warm drying field or output high temperature water.

Specifically implemented in the following ways: as shown in Figure 1, package unit is made of two independent refrigeration systems, By compressor A1, oil eliminator 2, condenser A3, axial flow blower A4, expansion valve A5, evaporator A6, axial flow blower B7 and gas-liquid point Primary system is formed from device A8, by compressor B9, condenser B10, axial flow blower C11, expansion valve B12, evaporator B13, axis stream Blower A4 and gas-liquid separator B14 forms level two.High temperature refrigerant XP140 is filled in level two, characteristic is condensation Temperature is high, can produce 90 degree of drying temperatures or 85 degree of leaving water temperatures, but evaporating temperature requirement is also higher.The condenser of primary system The A3 and evaporator B13 of level two shares an axial flow blower A4 and passes through evaporator B13's when primary system does not start It is the normal temperature air equal with environment temperature, and when primary system starting, the air by evaporator B13 will be by condensation Air after device A3 heating, temperature will be much higher than environment temperature, the evaporating temperature of level two may make to greatly promote.

When environment temperature > 15 degree, system works according to process shown in Fig. 2, at this point, primary system does not work, second level system In system, the refrigerant of high temperature and pressure is discharged from compressor B9 exhaust outlet, into condenser B10, passes through the fortune of axial flow blower C11 Row, makes the air in confined space constantly pass through the condenser A3 of high temperature and is recycled, environment temperature can be promoted to 90 degree (or condenser B10 can be substituted using water-fluorine heat exchanger, and replace axial flow blower C11 with water pump, in this way, water fluorine can be changed Circulating water temperature in hot device is promoted), refrigerant is condensed into the liquid of cryogenic high pressure in condenser A3, and enters expansion valve B12, in expansion valve B12 after reducing pressure by regulating flow, the refrigerant liquid of low-temp low-pressure is entered in evaporator B13, passes through axis stream wind The operating of machine A4, refrigerant and surrounding air carry out heat exchange, and refrigerant suction heat of vaporization is the gas of low-temp low-pressure, go forward side by side Enter in gas-liquid separator B14, be then return to compressor B9 gas returning port, completes a refrigeration cycle.

When environment temperature < 15 degree, evaporating temperature will be less than 10 degree, the normal range of operation beyond XP140 refrigerant, will The high condensation temperature of needs cannot be provided, efficiency is also remarkably decreased, therefore it is necessary to provide sufficiently high evaporation in evaporation side for it Temperature.At this point, will start primary system, the refrigerant gas of high temperature and pressure is discharged from compressor A1 exhaust outlet, through oil eliminator 2, compressor A1 oil will return directly to press muffler by the pipeline of oil bottom, returns in compressor A1, prevents from compressing Machine A1 runs oil starvation, and refrigerant gas then passes through oil outlet pipe and enters in condenser A3, and by axial flow blower A4, environment is empty Gas will first pass through condenser A3 and, using the evaporator B13 of system two, can thus mention to evaporator B13 after temperature is promoted For the evaporitic environment of a high temperature, the performance of XP140 is enable preferably to bring into play, the condensation through condenser A3, refrigerant Gas becomes the refrigerant liquid of cryogenic high pressure, and into expansion valve A5, the reducing pressure by regulating flow of expanded valve A5 becomes low-temp low-pressure Refrigerant liquid, into evaporator A6, with the operating of axial flow blower B7, refrigerant and surrounding air carry out heat exchange, absorb ring The heat in border is evaporated to the refrigerant gas of low-temp low-pressure, and into gas-liquid separator A8, gas-liquid is carried out in gas-liquid separator 8 Separation, fluid storage divide bottom in gas, and gaseous refrigerant then returns in compressor return air mouth from gas point top, complete primary refrigeration Circulation.

The device is exactly secondary cycle mode in this way, it is ensured that XP140 refrigerant can be in the temperature that it is worked normally Spend in range, to ensure that the condensation side in level two can export the circulation air or high-temperature water of high temperature always, meet drying and The different demand such as industrial water.

In figure, description positional relationship only for illustration, should not be understood as the limitation to this patent；Obviously, this reality It is merely examples for clearly illustrating the present invention with novel above-described embodiment, and is not to the utility model Embodiment restriction.For those of ordinary skill in the art, it can also make on the basis of the above description Other various forms of variations or variation.There is no necessity and possibility to exhaust all the enbodiments.It is all practical new at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model right and wants within the spirit and principle of type Within the protection scope asked.

Claims (1)

1. a kind of Two-stage Compression high temperature drying unit, including compressor B, it is characterised in that: the one end compressor B and Liquid segregation device B is connected by pipeline, and the compressor B other end is connect with condenser B by pipeline, and axial flow blower C is equipped on the left of condenser B, cold Condenser B is connect with the one end evaporator B by pipeline and this pipeline is equipped with expansion valve B, the evaporator B other end and gas-liquid separator B is connected by pipeline, and condenser A is equipped with below gas-liquid separator B, is equipped with axial flow blower A, the one end condenser A below condenser A It is connect with oil eliminator by pipeline, oil eliminator is connect with compressor A by pipeline, and compressor A passes through with gas-liquid separator A Pipeline connection, gas-liquid separator A connect with evaporator A by pipeline, the left side evaporator A equipped with axial flow blower B, evaporator A and Condenser A is connected by pipeline and this pipeline is equipped with expansion valve A.