CN104857818B - The low dew point dehumidification device of cold storage warehouse - Google Patents

The low dew point dehumidification device of cold storage warehouse Download PDF

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Publication number
CN104857818B
CN104857818B CN201510087820.3A CN201510087820A CN104857818B CN 104857818 B CN104857818 B CN 104857818B CN 201510087820 A CN201510087820 A CN 201510087820A CN 104857818 B CN104857818 B CN 104857818B
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China
Prior art keywords
air
cold store
processing
dehumidifying rotor
dehumidification device
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CN201510087820.3A
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CN104857818A (en
Inventor
金伟力
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SAIBU GIKEN KK
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SAIBU GIKEN KK
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042Air treating means within refrigerated spaces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F24F3/1429Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant alternatively operating a heat exchanger in an absorbing/adsorbing mode and a heat exchanger in a regeneration mode
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/04Treating air flowing to refrigeration compartments
    • F25D2317/041Treating air flowing to refrigeration compartments by purification
    • F25D2317/0411Treating air flowing to refrigeration compartments by purification by dehumidification

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Drying Of Gases (AREA)
  • Central Air Conditioning (AREA)

Abstract

The present invention relates to a kind of dehumidification device of cold storage warehouse, the dehumidification device that can be reduced energy consumption and be difficult to frosting on the evaporator of cold store or cold storage warehouse etc. is provided.The present invention is as described above in order to solve the problems, such as, the processing air from cold store is set to pass through the sensible heat exchanger for the processing outlet air progress heat exchange with dehumidifying rotor, and make it through be divided into treatment region, renewing zone, these three areas of purifying area dehumidifying rotor treatment region and purifying area, it returns to the air for having passed through purifying area in processing air, the processing outlet air flowed out from treatment region is made to carry out supplying to cold store after heat exchange with processing air in the sensible heat exchanger.In addition, outside air is heated by regenerative heater, and the renewing zone for making it through dehumidifying rotor falls off the moisture that dehumidifying rotor adsorbs, so as to prevent evaporimeter frosting, realize wet-out property.

Description

The low dew point dehumidification device of cold storage warehouse
Technical field
The present invention relates to one kind such as dehumidification device cold store or cold storage warehouse.
Background technique
Cold store, cold storage warehouse or refrigerator, refrigerator-freezer using the refrigerating cycle for having used fluorine chlorine high, are used under normal circumstances In the refrigerating cycle of cold store, what is utilized recently is the refrigerating cycle that a part has used ammonia.
When the temperature in cold store is lower than the dew point of extraneous gas, tied on running evaporator (evaporator) Frost.If frosting, heat exchanger effectiveness is reduced, and under serious situation, the heat exchanger of evaporator can be blocked by frost completely sometimes, Cause air that cannot circulate.
Therefore, the operation for stopping refrigerator by the specific period, makes warm wind circulate on evaporator, to make white thawing.
In this way, due in the defrosting of frost refrigerator it is out of service, the keeping refrigerators such as frozen food are out of service There are problems in the case where the cold store for the article that the quality of Shi Baocun article reduces.
Accordingly, there exist following refrigerators, that is, two evaporators are arranged on a refrigerator, make two evaporator alternatings Operation, to alternately melt frost.Although this kind of refrigerator can eliminate frost in the case where not stopping refrigerator, by In two evaporators of setting, therefore there are problems that increasing cost and need to be arranged the space of two evaporators.
Frosting refers on so-called evaporator, there is latent heat load on refrigerator, can waste of energy.That is, being steamed to generate frost The condensation heat of water is generated on hair device and freezes heat.Under the meteorological condition of Japan, consumption of the usual latent heat load in refrigerator It is accounted in the energy close to half.Moreover, because the pyroconductivity of frost is low, therefore there is a problem of that the rate of heat exchange of evaporator is bad.
As the technology of the moisture prevented in air frosting in the evaporator, invent as disclosed in Patent Document 1 Dehumidification device as technology, the dehumidification device adsorb the moisture in air using dehumidifying rotor (desiccant rotor), and Using the waste heat of refrigerator as the heat source of water desorption, to reduce energy consumption.
In addition, patent document 2 is disclosed prevents the frosting in evaporator of the moisture in air in the same manner as patent document 1 Technology, provide following dehumidification device, that is, using the rotor of adsorption moisture, adjust the adsorbent of the rotor of adsorption moisture Fine pore, so that the moisture in pore not made to freeze.
Existing technical literature
Patent document:
Patent document 1: Japanese Unexamined Patent Publication 2001-179036 bulletin;
Patent document 2:WO2008-084573 bulletin.
Disclosed in Patent Document 1 is the moisture in air before capable of absorbing into evaporator using dehumidifying rotor to press down The technology of frosting on evaporator processed, but dehumidifying rotor is freezed not refer to, it is not disclosed about the resistance to low of pressure fan yet The technology of warm nature.
There is no the skill of the open dehumidifying rotor using the adsorbent fine pore for not adjusting water adsorption rotor in patent document 2 Art.In addition, not disclosing the technology of the lower temperature resistance about pressure fan yet.
That is, two patent documents are not all disclosed regardless of which type of dehumidifying rotor will not all rotor itself be made to freeze using Ground can be used in the dehumidification device of cold store or cold storage warehouse and low energy consumption.
Summary of the invention
The present invention is as described above for solving the problems, such as, most important to be characterized in that, by the purification air of dehumidifying rotor It is all returned to dehumidifier processing entrance, so as to can all recycle from the air that cold store or cold storage warehouse flow out.
Since dehumidification device of the invention has structure as above, it is capable of providing following dehumidification device, that is, cold due to making It is all returned to cold store behind processing (absorption) area that air in hiding warehouse passes through dehumidifying rotor, to not only reach saving The energy, additionally it is possible to prevent the frosting of evaporator.
In addition, due to making the air for the purifying area (purge zone) for having passed through dehumidifying rotor back to processing pressure fan Therefore front keeps the storage humidity section " C1 grades " of the refrigerating chamber from warehouse industry method construction regulations defined (Celsius subzero It is more than 10 degree or less and minus 20 degrees Celsius) air themperature processed of cold store below rises, so that will not become locating The non-serviceable temperature of pressure fan is managed hereinafter, dehumidifying rotor will not be made to freeze.
Detailed description of the invention
Fig. 1 is the flow graph for indicating the embodiment 1 of dehumidification device of the present invention.
Fig. 2 is the flow graph for indicating the embodiment 2 of dehumidification device of the present invention.
The explanation of appended drawing reference:
1 dehumidifying rotor
2 treatment regions
3 purifying areas
4 renewing zones
5 cold stores
6,7,8 flashboard
9 regenerative heaters
10 regeneration pressure fan
11 processing pressure fan
12 orthogonal sensible heat exchangers
Specific embodiment
Make the processing air from cold store by carrying out heat exchange for the processing outlet air with dehumidifying rotor Sensible heat exchanger, and make it through and be divided into treatment region, the treatment region of dehumidifying rotor of renewing zone, these three areas of purifying area and net Change area (purge zone), return to the air for having passed through purifying area in processing air, makes the processing outlet flowed out from treatment region Air carries out supplying to cold store after heat exchange with processing air in the sensible heat exchanger.In addition, being capable of providing one Kind dehumidification device, which is heated outside air by regenerative heater, and makes it through dehumidifying rotor again Raw area is vented outwards after the moisture that dehumidifying rotor adsorbs falls off, so as to prevent evaporimeter frosting.
Embodiment 1
Attached drawing is used below, and the embodiment of cold store of the invention dehumidification device is described in detail.Fig. 1 is table Show the flow graph of the air flowing of the dehumidification device of the embodiment of the present invention 1.
1 in Fig. 1 is dehumidifying rotor, is divided into three areas, respectively treatment region 2, purifying area 3 and renewing zone 4.It is dehumidifying The direction of rotation of rotor 1 is followed successively by treatment region 2, renewing zone 4, purifying area 3.The dehumidifying rotor 1 is revolved by motor (not shown) Turn.
Make the processing air in cold store 5 by orthogonal sensible heat exchanger 12 using processing pressure fan 11, then by removing The treatment region 2 of wet rotor 1 and become dry air, and in orthogonal sensible heat exchanger 12 and processing air carry out heat exchange after Back in cold store 5.
A part of the air flowed out from processing pressure fan 11 is by after the purifying area 3 of dehumidifying rotor 1, and from orthogonal sensible heat The processing air mixing that exchanger 12 flows out.
Using regeneration pressure fan 10, outside air OA is set to pass through regenerative heater 9 to be heated by dehumidifying rotor 1 Renewing zone 4 is dehumidified the moisture of the absorption of rotor 1 to fall off, and is vented outwards.
By above structure, the air being heated by purifying area is made to return to the processing air flowed out from cold store In, without using the processing pressure fan with special lower temperature resistance, original cost can be reduced, can also prevent from removing Wet rotor freezes.In addition, since the processing air that will be flowed out from cold store is all returned to cold store, it is external Air will not invade cold store, so as to energy conservation.
For example, when the temperature in cold store 5 is 30 degree subzero (following temperature is all " Celsius ") Celsius and dehumidifying rotor Regeneration temperature be 140 degree in the case where, using rate of heat exchange be 52.4% orthogonal sensible heat exchanger 12, sensible heat exchanger goes out Mouth temperature reaches subzero 13.2 degree, empty by mixing with the temperature flowed out from the purifying area 3 of dehumidifying rotor 1 for 42 degree of air Temperature degree reaches subzero 5.4 degree.In addition, the inlet temperature of the treatment region 2 of dehumidifying rotor 1 is subzero 2.4 degree and dew-point temperature is Subzero 30 degree, the outlet temperature for the treatment of region 2 is 2 degree and dew-point temperature is 40 degrees below zero, in orthogonal sensible heat exchanger 12 with from Cold store outflow processing air carry out heat exchange, thus supply to cold store air themperature reach subzero 14.7 degree and Dew-point temperature reaches 40 degrees below zero.
Embodiment 2
Fig. 2 is the flow graph for indicating the air flowing of the dehumidification device of the embodiment of the present invention 2.It is with 1 difference of embodiment The problem of due to installation space etc. and the embodiment in the case of sensible heat exchanger 12 cannot be set.Other structures be it is common, Therefore repeated description is omitted here.
Using processing pressure fan 11, become the processing air in cold store 5 by the treatment region 2 of dehumidifying rotor 1 Dry air, and return in cold store 5.A part of the air flowed out from processing pressure fan 11 passes through dehumidifying rotor 1 It is mixed after purifying area 3 with the processing air flowed out from cold store 5, and in order to enable the air themperature to become processing pressure fan 11 The temperature enough used, by the way that the area of purifying area is compared the methods of increase, so that being increased by the air quantity of the air of purifying area.Separately Outside, the temperature-detecting devices such as temperature sensor can also be set at processing air blower inlet, and the air quantity tune such as flashboard will be passed through Engagement positions are adjusted through the air quantity for the treatment of region and purifying area ratio.
Under normal circumstances, by the way that the air quantity of the air of purifying area is by the air quantity of the air for the treatment of region 1/2~1/10 Preferably, but preferably 1/3~1/6.Table 1 indicates, when using the honeycomb runner and processing that diameter is 320mm, width is 400mm Area's inlet temperature is minus 20 degrees, regeneration temperature is 140 degree, regeneration air humidity is 20g/kg, regeneration air quantity ratio (regeneration wind Amount/processing air quantity) purification air quantity experimental result that wet-out property bring is influenced when being 1/6.By the way that air quantity ratio will be purified (regeneration air quantity/processing air quantity) is set as 1/2~1/10, so that the dew-point temperature of exit of the treatment zone is compared with the case where not purifying 15 degree or more are reduced, by being set as 1/3~1/6, to reduce by 20 degree or more.
Table 1
When dehumidification device brings into operation, brings into operation, make under the freezing point in cold store after gate valve 6,7,8 being closed Cryogenic air be not directed through processing pressure fan, processing air blower inlet temperature sufficiently rises after opening gate valve 6,7,8.Separately It outside, may be identical operation in embodiment 1.In addition, though the air under freezing point is flowed to sensible heat exchanger 12, but by The temperature that Yu Yucong cold store 5 enters sensible heat exchanger 12 is compared, the dry-bulb temperature back to the air of cold store 5 it is high and Dew-point temperature is low, therefore frost will not be generated in sensible heat exchanger 12.
As described above, mixing all air for having passed through purifying area with air processed, so that supply is extremely handled The temperature of the air processed of pressure fan rises, therefore usually used pressure fan is minimum left for subzero 10 degree using temperature The right side, therefore do not need using the pressure fan with special lower temperature resistance, additionally it is possible to prevent freezing for dehumidifying rotor.In addition, by It is all returned to cold store in the air processed flowed out from cold store, therefore, there is no need to import outside air, thus The energy is saved, the forecooler of setting outside air processing is not needed yet, so that original cost can also be reduced.Generally on the market The lower temperature resistance of the pressure fan of sale is designed in conjunction with Japanese meteorological condition.Therefore, the general air-supply used within doors In the case where machine, the minimum temperature that producer guarantees is subzero 10 degree or so.The present invention is able to use this general pressure fan, because This contributes in cost and on the time of delivery.
Industrial availability
The present invention provides a kind of dehumidification device, which can prevent the evaporation of cold store, cold storage warehouse etc. The frosting of device, and reduce energy consumption.

Claims (3)

1. a kind of dehumidification device, which is characterized in that
With dehumidifying rotor, which loads wetly adsorbent,
On the direction of rotation of the dehumidifying rotor, three areas are divided into according to the sequence for the treatment of region, renewing zone, purifying area,
The air flowed out from cold store is set to pass through the treatment region and purifying area,
Return to the air for having passed through the purifying area from the air that the cold store flows out,
Make the extraneous gas after being heated by regenerative heater by being vented outwards behind the renewing zone,
Return to the air for having passed through the treatment region in the cold store,
The air flowed out out of described cold store carries out Exchange of apparent heat with the air that return in the cold store.
2. dehumidification device according to claim 1, which is characterized in that
It is provided with the temperature-detecting device for measurement processing air blower inlet temperature, processing air quantity and purification air quantity is adjusted, comes So that the processing air blower inlet temperature is reached processing pressure fan and uses temperature range.
3. dehumidification device according to claim 1, which is characterized in that
It is set as having passed through the 1/2~1/10 of the air quantity of the air of the treatment region by the air quantity of the air of the purifying area.
CN201510087820.3A 2014-02-20 2015-02-25 The low dew point dehumidification device of cold storage warehouse Active CN104857818B (en)

Applications Claiming Priority (2)

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JP2014030388A JP6321398B2 (en) 2014-02-20 2014-02-20 Low dew point dehumidifier for refrigerated warehouse
JP2014-030388 2014-02-20

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CN104857818B true CN104857818B (en) 2019-03-22

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CN107120747A (en) * 2017-05-27 2017-09-01 河南理工大学 The anti-defrosting system of net for air-source heat pump units dry-air blast and its method of work
CN108800723A (en) * 2018-07-09 2018-11-13 上海云懋空气处理设备有限公司 A kind of energy-saving dehumidification system for runner for low temperature and low humidity library
CN110925902B (en) * 2019-11-22 2021-02-19 珠海格力电器股份有限公司 Low dew point composite dehumidifier

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CN102422089A (en) * 2009-05-04 2012-04-18 百瑞空气工程(亚洲)有限公司 Desiccant unit control system and method

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KR20150098591A (en) 2015-08-28
JP6321398B2 (en) 2018-05-09
KR102242190B1 (en) 2021-04-20
JP2015155081A (en) 2015-08-27
TW201541041A (en) 2015-11-01
TWI640733B (en) 2018-11-11
CN104857818A (en) 2015-08-26

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