CN208704341U - A kind of Analysis of Heat Pump Drying System with heat accumulation function - Google Patents

Abstract

The utility model discloses a kind of Analysis of Heat Pump Drying System with heat accumulation function, are related to drying device field, including the dried medium circulatory system, the coolant media circulatory system and energy storage circulation system；In the dry materials later period, for the method using auxiliary condenser heat dissipation, in the dry materials later period, the heat of auxiliary condenser discharge is temporarily saved by a regenerative apparatus, and it utilizes in drying system again, to reduce the electric energy input of dry materials heat pump unit early period, finally saves the electric energy of a large amount of preciousnesses, reach energy-saving and environment-friendly effect.

Description

A kind of Analysis of Heat Pump Drying System with heat accumulation function

Technical field

The utility model belongs to technical field of drying, and in particular to a kind of Analysis of Heat Pump Drying System with heat accumulation function.

Background technique

For carrying out the closed circuit heat pump drier of intermittent operation, done in dry materials early period due to material water ratio height Dry case outlet hot blast temperature is low, humidity is big, and the cooling capacity that evaporator provides can play the role of effectively cool-down dehumidification to hot wind, remove Material drying needs a large amount of heats, due to needing to preheat to system and material, and because carrying out frequent hydrofuge And amount of heat outlet is caused, so that the electric energy of inputted compressor and blower is fully used.However, with dried The progress of journey, has arrived the drying process later period, and since material water ratio has lowered, rate of drying becomes very slow, baking needed Heat is seldom, and hot wind humidity also further decreases, and does not need carry out system hydrofuge, in this period, evaporator continues to heat Wind dehumidifies, then compressor must continue to work, institute's inputing power will constantly be changed into thermal energy, will lead to unit and drying chamber Interior temperature is higher and higher in required drying temperature.

In order to avoid the generation of above situation, two methods can be used, a kind of method is to close heat pump unit, is only retained Blower operating, carries out so-called " bored baking ", when drying is reached a certain level to hot wind humidity, is then turned on heat pump unit, carries out Secondary dehumidifying, but compressor emergency shutdown when due to " bored baking ", evaporator cannot dehumidify in time, hot wind humidity increases than before, It can make dry materials increased periods.Another method is outside the electric energy discharge system inputted compressor using auxiliary condenser, System temperature can be kept not increase in this way, and unit is not shut down, evaporator carries out always dehumidifying operation, rate of drying compared with " bored baking " is higher, but due to the heat spreading function of auxiliary condenser, can slattern a large amount of electric energy.

Utility model content

In view of the deficiencies of the prior art, the utility model provides a kind of Analysis of Heat Pump Drying System with heat accumulation function, needle To the method using auxiliary condenser heat dissipation, in the dry materials later period, the heat of auxiliary condenser discharge is passed through into an accumulation of heat Device is temporarily saved, and is utilized in drying system again, to reduce the electric energy input of dry materials heat pump unit early period, most The electric energy of a large amount of preciousnesses is saved eventually.

To achieve the above object, the technical scheme adopted by the utility model is

A kind of Analysis of Heat Pump Drying System with heat accumulation function, including the dried medium circulatory system, the coolant media circulatory system With energy storage circulation system；

The dried medium circulatory system includes circulating fan and drying box, and the blower and drying box pass through dried medium Pipeline is in turn connected to form closed circuit；The coolant media circulatory system includes by compressor, evaporator, throttle valve, inside Condenser and external condenser, the compressor, evaporator, throttle valve and internal condensation device pass sequentially through coolant media pipeline company Logical to form coolant media main road, the external condenser is in parallel with the internal condensation device；The evaporator and internal condensation device It is all disposed on the dried medium pipeline；The energy storage circulation system includes the storage for collecting external condenser discharge heat Thermal, the heat-storing device are connected to external condenser, are formed heat collector circuit, are arranged in the heat collector circuit and follow Ring pumps I；The heat-storing device also sets up heat output loop, and circulating pump II, and the heat are arranged on the heat output loop Heat exchanger is set on amount output loop.

Further, being heat-storage medium in the heat-storing device, pass through heat collector circuit circulation and external condenser Heat exchange is carried out, to recycle heat.

Further, the heat-storage medium is water, easily obtains, is at low cost and environmentally friendly.

Further, the evaporator and internal condensation device are respectively arranged at the circulating fan upstream and downstream, use respectively In dry and heating.

Further, being connected with predrying pipeline on the heat exchanger, make dried medium and institute in predrying pipeline It states heat output loop and carries out heat exchange, quantity of heat given up, predrying pipeline is connected to predrying case, predrying is carried out to material, To achieve the purpose that waste heat recycles.

It is excessive to will lead to heat-storing device heat dissipation since the time is too long, the scale of material drying is bigger, and scheduling of production is got over Intensively, the effect of the utility model is also more prominent.

The beneficial effects of the utility model are:

Compared with prior art, in the drying system of the utility model, i.e., using the method for external condenser heat dissipation, in object Expect the later stage of drying, the heat of external condenser discharge is temporarily saved by a heat-storing device, when needing to next batch When material carries out prebake, this partial heat is released, so that the electric energy for reducing dry materials heat pump unit early period is defeated Enter, finally saves the electric energy of a large amount of preciousnesses；Simultaneously as the operating time too long heat-storing device that will lead to radiates sternly twice Weight, therefore, bigger for the scale of material drying, scheduling of production is more intensive, and the effect of the utility model is also more prominent, ability Loss is fewer, and energy-saving effect is obvious.

Detailed description of the invention

The utility model is described in further detail with reference to the accompanying drawing.

Fig. 1 is a kind of example structure schematic diagram of the utility model drying system；

In figure: 1, compressor；2, evaporator；3, throttle valve；4, circulating fan；5, internal condensation device；6, external condenser； 7, heat-storing device；8, air blower；9, heat exchanger；10, predrying case；11, material frame II；12, circulating pump II；13, circulating pump I； 14, drying box；15, material frame I.

Specific embodiment

It is practical to this below with reference to embodiment in order to keep the purpose of this utility model, technical solution and advantage clearer It is novel to be further elaborated, but be not the limitation to scope of protection of the utility model.It needs in the description of the present invention, Understand, the orientation of the instructions such as term " on ", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outside" or Orientation or positional relationship of the tool in well when positional relationship is based on underground work is merely for convenience of description the utility model It is described with simplifying, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation structure It makes and operates, therefore should not be understood as limiting the present invention.

As shown in Figure 1, a kind of Analysis of Heat Pump Drying System with heat accumulation function, including the dried medium circulatory system, cold media The matter circulatory system and energy storage circulation system；The dried medium circulatory system includes circulating fan 4 and drying box 14, the blower 4 are in turn connected to form closed circuit by dried medium pipeline with drying box 14；The coolant media circulatory system includes by pressing Contracting machine 1, evaporator 2, throttle valve 3, internal condensation device 5 and external condenser 6, the compressor 1, evaporator 2,3 and of throttle valve Internal condensation device 5 passes sequentially through coolant media pipeline and is connected to form coolant media main road, the external condenser 6 and the inside Condenser 5 is in parallel；The evaporator 2 and internal condensation device 5 are all disposed on the dried medium pipeline；The energy storage circulation system System includes the heat-storing device 7 that heat is discharged for collecting external condenser 6, and the heat-storing device 7 is connected to external condenser 6, Heat collector circuit is formed, circulating pump I13 is set in the heat collector circuit；The heat-storing device 7 also sets up heat output Circulating pump II12 is arranged on the heat output loop for circuit, and heat exchanger 9 is arranged on the heat output loop.Drying box Material frame I15 is placed in 14.

It as a preferred embodiment, is heat-storage medium in the heat-storing device 7.

As a preferred embodiment, the heat-storage medium is water.

As a preferred embodiment, the evaporator 2 and internal condensation device 5 are respectively arranged at about 4 circulating fan Trip.

As a preferred embodiment, predrying pipeline is connected on the heat exchanger 9.

It is connected with air blower 8 and predrying case 10 on predrying pipeline, places material frame II11 in predrying case 10, uses The heat that predrying pipeline is obtained by heat exchanger 9 carries out predrying to the material on material frame II11.

Below by taking above-described embodiment as an example, the working principle of Tthe utility model system is described as follows:

Drying process later period, Analysis of Heat Pump Drying System bulk temperature are promoted, and material is precipitated moisture and is substantially reduced, and lead to dry Jie Matter temperature increases, and relative humidity reduces, it is necessary to which vapor therein could be precipitated by expending more cooling capacity, at this point, opening heat Collecting loop collects the heat that external condenser 6 sheds, the temperature of drying box import dried medium can not only be made to remain unchanged, Also the waste heat of system can be recycled, drying system is re-used for by heat exchanger 9.

The basic principles and main features and advantage of the utility model have been shown and described above.The technical staff of the industry It should be appreciated that the present utility model is not limited to the above embodiments, the above embodiments and description only describe this The principle of utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various change And improvement, these various changes and improvements fall within the scope of the claimed invention.The utility model requires protection scope It is defined by the appending claims and its equivalent thereof.

Claims (5)

1. a kind of Analysis of Heat Pump Drying System with heat accumulation function, which is characterized in that including the dried medium circulatory system, coolant media The circulatory system and energy storage circulation system；

The dried medium circulatory system includes circulating fan (4) and drying box (14), and the blower (4) and drying box (14) are logical It crosses dry medium pipeline and is in turn connected to form closed circuit；

The coolant media circulatory system includes by compressor (1), evaporator (2), throttle valve (3), internal condensation device (5) and outer Portion's condenser (6), the compressor (1), evaporator (2), throttle valve (3) and internal condensation device (5) pass sequentially through coolant media Pipeline is connected to form coolant media main road, and the external condenser (6) is in parallel with internal condensation device (5)；The evaporator (2) it is all disposed on the dried medium pipeline with internal condensation device (5)；

The energy storage circulation system includes the heat-storing device (7) for collecting external condenser (6) discharge heat, the heat accumulation dress It sets (7) to be connected to external condenser (6), forms heat collector circuit, circulating pump I (13) are set in the heat collector circuit； The heat-storing device (7) also sets up heat output loop, circulating pump II (12) is arranged on the heat output loop, and the heat It measures and heat exchanger (9) is set on output loop.

2. system according to claim 1, which is characterized in that be heat-storage medium in the heat-storing device (7).

3. system according to claim 2, which is characterized in that the heat-storage medium is water.

4. system according to claim 1, which is characterized in that the evaporator (2) and internal condensation device (5) are respectively set In the circulating fan (4) upstream and downstream.

5. system according to claim 1, which is characterized in that be connected with predrying pipeline on the heat exchanger (9).