CN113983725A - Drying chamber regulation and control system - Google Patents
Drying chamber regulation and control system Download PDFInfo
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- CN113983725A CN113983725A CN202111285251.5A CN202111285251A CN113983725A CN 113983725 A CN113983725 A CN 113983725A CN 202111285251 A CN202111285251 A CN 202111285251A CN 113983725 A CN113983725 A CN 113983725A
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- 238000001035 drying Methods 0.000 title claims abstract description 91
- 239000003570 air Substances 0.000 claims abstract description 182
- 238000007791 dehumidification Methods 0.000 claims abstract description 152
- 239000003507 refrigerant Substances 0.000 claims abstract description 37
- 239000012080 ambient air Substances 0.000 claims abstract description 20
- 238000009423 ventilation Methods 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims description 61
- 238000005057 refrigeration Methods 0.000 claims description 18
- 230000003750 conditioning effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 19
- 239000007788 liquid Substances 0.000 description 9
- 230000007613 environmental effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
- F26B21/086—Humidity by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a drying chamber regulation and control system which comprises an ambient air ventilation channel, an internal circulation dehumidification channel and a controller, wherein the controller closes the internal circulation dehumidification channel and opens the ambient air ventilation channel when dehumidification is needed and the air supply humidity of the internal circulation dehumidification channel is higher than the outdoor ambient humidity. In this drying chamber refrigerant refrigerating system, environment wind trades wind passageway and inner loop dehumidification passageway has been set up to make carry out the extrinsic cycle dehumidification, also can dehumidify through the inner loop, in addition through the controller, can be when inner loop dehumidification passageway dehumidification dynamics is not enough, can be with wind leading-in outdoor environment, in order to dehumidify, in order to play more quick dehumidification effect. To sum up, this drying chamber regulation and control system can solve the not good problem of present drying chamber dehumidification effect effectively.
Description
Technical Field
The invention relates to the technical field of drying, in particular to a drying chamber regulation and control system.
Background
The existing heat pump baking process is divided into a pure open type, a pure closed type and an open-close type combination. The pure open type has the largest fluctuation of the dry bulb temperature and the wet bulb temperature when the direct discharge amount of air is adjusted because the air in the curing barn is directly discharged. The pure closed type adopts a curing barn air internal circulation processing mode, although the temperature fluctuation under the condition of control optimization can be better than that of the pure open type, in different process stages, the heat quantity required for maintaining the stability of the dry bulb temperature and the dehumidification cooling quantity required for maintaining the stability of the wet bulb temperature cannot reach the cold and heat quantity balance of a single refrigerant refrigeration system, so the condition that the dry bulb temperature and the wet bulb temperature cannot be simultaneously and accurately controlled can occur. The open-close combination is to balance the unbalance problem of heat and cold quantity by a pure open type direct discharging mode on the advantage that the fluctuation of the pure closed type temperature control is small, and the fluctuation of the control of the temperature of the wet and dry balls is superior to that of the pure open type and the pure closed type. But in the combination of switching formula at present, to selecting open circulation or closed circulation, all need carry out different selections according to the state of difference, adopt to play better stoving effect, but at present in the selection, still exist not enoughly, and then lead to the not good problem of stoving effect.
In summary, how to effectively solve the problem of poor dehumidification effect of the drying chamber is a problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a drying chamber regulation system, which can effectively solve the problem of poor dehumidification effect of the drying chamber.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a drying chamber regulation and control system, includes that environment wind trades wind passageway, inner loop dehumidification passageway and controller, the controller is just when needs dehumidification the inner loop dehumidification passageway air feed humidity makes when being higher than outdoor environment humidity the inner loop dehumidification passageway is closed and is made environment wind trades the wind passageway and opens.
In the drying chamber refrigerant refrigerating system, when the drying chamber refrigerant refrigerating system is used, when the controller obtains that the drying chamber needs to be dehumidified, whether the air supply humidity of the internal circulation dehumidification channel is higher than the outdoor environment humidity is further judged, if so, the internal circulation dehumidification channel is closed and the environment air exchange channel is opened, so that dehumidification is stopped through the internal circulation dehumidification channel, air in the outdoor environment is introduced to enter the drying chamber, and correspondingly, high-humidity air in the drying chamber is discharged to the outdoor environment through the environment air exchange channel. In this drying chamber refrigerant refrigerating system, environment wind trades wind passageway and inner loop dehumidification passageway has been set up to make carry out the extrinsic cycle dehumidification, also can dehumidify through the inner loop, in addition through the controller, can be when inner loop dehumidification passageway dehumidification dynamics is not enough, can be with wind leading-in outdoor environment, in order to dehumidify, in order to play more quick dehumidification effect. To sum up, this drying chamber regulation and control system can solve the not good problem of present drying chamber dehumidification effect effectively.
Preferably, still include wind-guiding passageway and heating device, heating device can be right the environment wind trades wind passageway inlet air feed mouth air feed and the air feed mouth air feed heating of inner loop dehumidification passageway, when the controller humidity satisfies the settlement scope in the drying chamber, can control the environment wind trades wind passageway and the inner loop dehumidification passageway is closed, so that wind-guiding passageway is direct with the drying chamber internal air direction heating device heats.
Preferably, the controller can control the opening of the ambient air ventilation channel when the outdoor ambient humidity meets a set range and the outdoor ambient temperature is higher than the drying room temperature.
Preferably, the controller closes the internal circulation dehumidification channel and opens the ambient wind ventilation channel when dehumidification is required and when the air supply temperature of the internal circulation dehumidification channel is lower than the outdoor ambient temperature.
Preferably, the dehumidifying device comprises a return air inlet, an air supply outlet and a dehumidifying fan, wherein the return air inlet, an air inlet side of the dehumidifying fan and an air inlet side of the heating device are communicated through a cavity, an air outlet side of the dehumidifying fan is respectively communicated with an air exhaust channel of the environment air exchange channel and an air inlet of the internal circulation dehumidifying channel, an air supply outlet of the internal circulation dehumidifying channel and an air inlet channel of the environment air exchange channel are communicated to the heating device, an air exhaust valve is arranged in the air exhaust channel of the environment air exchange channel, a fresh air valve is arranged in the air inlet channel, and an internal switch valve is arranged in the internal circulation dehumidifying channel.
Preferably, the refrigeration system further comprises an outdoor evaporator, the heating device is a condenser, a dehumidification evaporator is arranged in the internal circulation dehumidification channel, a heat exchange channel of the outdoor evaporator and a heat exchange channel of the dehumidification evaporator are arranged in parallel, and the outdoor evaporator and the heat exchange channel of the condenser are connected in series in the same refrigerant refrigeration system.
Preferably, the outdoor evaporator, the dehumidification evaporator and the condenser are respectively provided with two heat exchange channels and are respectively and correspondingly connected to form two groups of refrigerant refrigeration systems.
Preferably, in at least one of the two refrigerant refrigeration systems, the compressor is an inverter compressor.
Preferably, in the two refrigerant refrigeration systems, the heat exchange channels of the outdoor evaporator and the heat exchange channel inlet sides of the dehumidification evaporators are respectively connected with an electronic expansion valve, and the heat exchange channel outlet sides of the outdoor evaporator and/or the heat exchange channel outlet sides of the dehumidification evaporators are/is correspondingly provided with a switch valve.
Preferably, the system comprises an outdoor humidity detector for detecting the humidity of the outdoor environment, an outdoor temperature detector for detecting the temperature of the outdoor environment, an indoor humidity detector for detecting the humidity of the drying chamber, an indoor temperature detector for detecting the temperature of the drying chamber, a wind supply temperature detector for detecting the wind supply temperature of the inner circulation dehumidification channel and a wind supply humidity detector for detecting the wind supply humidity of the inner circulation dehumidification channel; the outdoor humidity detector, the outdoor temperature detector, the indoor humidity detector, the indoor temperature detector, the air supply temperature detector and the air supply humidity detector are all connected with the controller to transmit detection values to the controller.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a drying chamber conditioning system according to an embodiment of the present invention;
fig. 2 is a schematic view of a communication structure of a drying chamber conditioning system according to an embodiment of the present invention.
The drawings are numbered as follows:
the system comprises an internal circulation dehumidification channel 1, an air guide channel 2, a heating device 3, an air return port 4, an air supply port 5, a dehumidification fan 6, an exhaust channel 7, an air inlet channel 8, a dehumidification evaporator 9, an internal switch valve 10, a compressor 11, an electronic expansion valve 12, a switch valve 13, an acceleration fan 14 and an outdoor evaporator 15.
Detailed Description
The embodiment of the invention discloses a drying chamber regulation and control system, which is used for effectively solving the problem of poor dehumidification effect of the existing drying chamber.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, fig. 1 is a schematic structural diagram of a drying chamber conditioning system according to an embodiment of the present invention; fig. 2 is a schematic view of a communication structure of a drying chamber conditioning system according to an embodiment of the present invention.
In an embodiment, the present embodiment provides a drying chamber regulation system, which is used for regulating temperature and humidity in a drying chamber, mainly for temperature rise regulation and humidity reduction regulation, and also for damp, such as humidity or humidity increase. Specifically, the system mainly comprises an ambient air ventilation channel, an internal circulation dehumidification channel 1 and a controller.
The environment wind exchanging channel can guide wind in the outdoor environment into the drying chamber and correspondingly guide the wind in the drying chamber out to the outdoor environment, so that the wind which better meets the drying condition in the outdoor environment enters the drying chamber. Correspondingly, the ambient air ventilation channel should include the air intake channel 8 and the air exhaust channel 7, and an on-off valve may be respectively disposed to close when necessary, or other components may be disposed to make the fluid flow through the air intake channel 8 and the air exhaust channel 7 very little or not, such as changing the internal air pressure to prevent the air from flowing through.
The internal circulation dehumidification channel 1 is used for introducing air in the drying chamber, then dehumidifying the air, and introducing the air into the drying chamber after dehumidification is finished, so that outdoor air is not introduced to form internal circulation. Wherein the inner loop dehumidification passageway should correspond and be provided with dehydrating unit, wherein dehydrating unit is like refrigerating plant, drying device etc. wherein refrigerating plant mainly is through the cooling, and then liquefies into the drop of water to play the dehumidification effect, and drying device wherein, if setting up the water absorption part, dry felt, absorption lime etc. also can adopt other dehydrating unit certainly. Correspondingly, the internal circulation dehumidification channel 1 may be provided with a switch component, such as a switch valve, so as to close the internal circulation dehumidification channel 1, or in other ways, the fluid may be less or not flow through the internal circulation dehumidification channel 1, such as increasing the internal air pressure, so as to prevent the gas from entering, so as to achieve the closing effect.
The controller closes the inner circulation dehumidification channel 1 and opens the environment air exchange channel when dehumidification is needed and the air supply humidity of the inner circulation dehumidification channel 1 is higher than the outdoor environment humidity. It should be noted that how the controller determines whether to dehumidify or not may be external control instruction input, or may determine according to the obtained humidity in the drying chamber and a set target value, where the humidity in the drying chamber may be obtained by a detector, or may be obtained by external input, and the target value is set, and if the set value is different according to different drying chamber objects, the set target value is also different according to the drying process, and generally is set correspondingly as needed, which is not described herein again. It should also be noted that the humidity of the air supplied to the internal circulation dehumidification passage 1 and the humidity of the outdoor environment may be obtained directly from the outside or provided by a detector, as required.
It should be noted that, make when the air supply humidity of inner loop dehumidification passageway 1 is higher than outdoor environment humidity inner loop dehumidification passageway 1 closes and makes environment wind trades the wind passageway and opens, and its purpose indicates when needs dehumidification, and when outdoor environment wind body dehumidification effect is better, can be to open environment wind and trade the wind passageway to carry out outdoor environment dehumidification. But not specifically here: as long as the air supply humidity of the internal circulation dehumidification channel 1 is higher than the outdoor environment humidity, the internal circulation dehumidification channel 1 is necessarily closed and the environment air exchange channel is opened. It is also possible to further judge other conditions as necessary and then further judge whether or not to perform the above-described operation. However, it should be at least ensured that, no matter how many steps of judgment exist, at least one comprehensive judgment result exists, and the controller can be directly prompted to close the internal circulation dehumidification channel 1 and open the environmental wind ventilation channel. So that the humidity of the air supplied by the dehumidification channel 1 is higher than the humidity of the outdoor environment, and the two judgment conditions are two, the controller can be prompted to execute the following steps: the internal circulation dehumidification channel 1 is closed and the ambient wind ventilation channel is opened. That is to say, when dehumidification is needed and the air supply humidity of the internal circulation dehumidification channel 1 is not higher than the outdoor environment humidity, the internal circulation dehumidification channel 1 can be opened and/or the environment air exchange channel can be opened according to the need.
In the drying chamber refrigerant refrigerating system, when the drying chamber refrigerant refrigerating system is used, when the controller obtains that the drying chamber needs to be dehumidified, whether the air supply humidity of the internal circulation dehumidification channel 1 is higher than the outdoor environment humidity is further judged, if so, the internal circulation dehumidification channel 1 is closed and the environment air exchange channel is opened, so that dehumidification is stopped through the internal circulation dehumidification channel 1, air in the outdoor environment is introduced to enter the drying chamber, and correspondingly, high-humidity air in the drying chamber is discharged to the outdoor environment through the environment air exchange channel. In this drying chamber refrigerant refrigerating system, set up environment wind and traded wind passageway and inner loop dehumidification passageway 1 to make carry out the extrinsic cycle dehumidification, also can dehumidify through the inner loop, moreover through the controller, can be when inner loop dehumidification passageway 1 dehumidification dynamics is not enough, can be with wind leading-in outdoor environment, in order to dehumidify, in order to play more quick dehumidification effect. To sum up, this drying chamber regulation and control system can solve the not good problem of present drying chamber dehumidification effect effectively.
Furthermore, the air conditioner is also required to be arranged on the heating device 3, wherein the heating device 3 can supply air to the air supply port of the air inlet channel 8 of the ambient air exchange channel and supply air to the air supply port of the internal circulation dehumidification channel 1 for heating, so that after the air inlet channel 8 of the ambient air exchange channel introduces air from the outdoor environment, the air is required to pass through the heating device 3 and is heated by the heating device 3 and then supplied to the drying chamber, and the air inlet temperature of the drying chamber is prevented from being too low; similarly, after being dehumidified, the air in the internal circulation dehumidification passage 1 flows out from the air supply port, and then passes through the heating device 3, so that the air is heated by the heating device 3 and then is supplied to the drying chamber.
Further, considering that dehumidification is not required in all cases, it is preferable that the drying apparatus further includes an air guiding channel 2, wherein the controller is capable of controlling the ambient air ventilation channel and the internal circulation dehumidification channel 1 to be closed when the humidity in the drying chamber satisfies a set range, so that the air guiding channel 2 directly guides the air in the drying chamber to the heating device 3 for heating. Without being subjected to a dehumidification process, so as to directly form internal circulation heating.
Further, considering that the temperature of the air in the drying chamber may be significantly reduced in the drying process, for better drying, the controller is preferably configured to control the opening of the ambient air ventilation channel when the outdoor ambient humidity meets the set range and the outdoor ambient temperature is higher than the temperature in the drying chamber, so that the air in the outdoor environment enters the drying chamber to achieve the heating effect, and it should be noted that, at this time, the heating device 3 may be selected to be simultaneously opened, so that the air in the outdoor environment can be further heated by the heating device 3. Wherein the outdoor environment humidity meeting the set range generally means that the outdoor environment humidity is lower than the drying room humidity. And at this time, the inner circulation dehumidifying passage 1 should be closed. And as outdoor environment air enters the drying chamber, the temperature of the drying chamber is not lower than or not too lower than the outdoor environment temperature, and at the moment, the environment air exchange channel can be closed, and internal circulation heating is directly carried out.
Further, it is considered that the internal circulation dehumidification channel 1 generally adopts condensation dehumidification, i.e. the above refrigeration dehumidification, and further results in a lower outlet air temperature, and if the outlet air temperature is too low, the internal circulation dehumidification effect is not large, and on the contrary, the energy loss is too fast. Based on this, the controller preferably closes the internal circulation dehumidification passage and opens the ambient wind exchange passage when dehumidification is required and when the supply wind temperature in the internal circulation dehumidification passage 1 is lower than the outdoor ambient temperature. It should be noted that, when dehumidification is required, for condition a, the humidity of the air supplied to the internal circulation dehumidification passage 1 is higher than the humidity of the outdoor environment, and condition B: when the air supply temperature of the internal circulation dehumidification channel 1 is lower than the outdoor environment temperature, the controller judges that the condition A or the condition B meets one of the conditions, and executes external circulation dehumidification, namely the internal circulation dehumidification channel 1 is closed and the environment air exchange channel is opened; the outer-circulation dehumidification may be performed when both the condition a and the condition B are satisfied. It should be noted that, the condition B may further include a judgment condition, for example, whether the outdoor environment humidity meets the requirement is further judged, and if so, the outdoor environment humidity is further required to be lower than the drying chamber humidity.
It should be noted that, the ambient air ventilation channel, the internal circulation dehumidification channel 1, and the air guide channel 2 may be respectively provided with air guide ports communicated with the drying chamber, or may be integrally provided. On this basis, the drying device preferably comprises a return air inlet 4, an air supply outlet 5 and a dehumidifying fan 6, wherein the return air inlet 4, the air supply side of the dehumidifying fan 6 and the air supply side of the heating device 3 are communicated through a cavity, so that air introduced from the drying chamber into the return air inlet 4 can enter the air supply side of the dehumidifying fan 6 and also can enter the air supply side of the heating device 3, if the dehumidifying fan 6 is opened, the air introduced into the return air inlet 4 can be sucked, further, the effect of guiding more air into the dehumidifying fan 6 is achieved, and if the dehumidifying fan 6 is closed, at the moment, certain wind blocking effect is formed by blades inside the dehumidifying fan 6, further, more air can directly flow to the heating device 3 from the cavity.
The air outlet side of the dehumidifying fan 6 is respectively communicated with the air outlet channel 7 of the environment air exchanging channel and the air inlet of the internal circulation dehumidifying channel 1, so that the air body pumped in by the dehumidifying fan 6 can enter the air outlet channel 7 of the environment air exchanging channel and also can enter the air inlet of the internal circulation dehumidifying channel 1, and it needs to be noted that the air outlet channel 7 of the environment air exchanging channel can be communicated with the air inlet of the internal circulation dehumidifying channel 1 and also can be communicated with the middle part of the internal circulation dehumidifying channel 1.
And the air supply port of the internal circulation dehumidification channel 1 and the air inlet channel 8 of the ambient air ventilation channel are communicated to the heating device 3, so that the air dehumidified by the internal circulation dehumidification channel 1 directly faces the air inlet side of the heating device 3, and similarly, the air inlet of the air inlet channel 8 of the ambient air ventilation channel is directly guided to the air inlet side of the heating device 3.
An exhaust channel 7 of the environment air exchange channel is provided with an exhaust valve, and an air inlet channel 8 is provided with a fresh air valve. The internal circulation dehumidification channel 1 is internally provided with the internal switch valve 10, so that no matter which exhaust channel 7 of the environmental air exchange channel is communicated to the internal circulation dehumidification channel 1, the exhaust channel 7 of the environmental air exchange channel is communicated to the air inlet side of the internal switch valve 10 to ensure that the internal circulation dehumidification channel 1 and the environmental air exchange channel work independently and do not interfere with each other, and the exhaust channel 7 of the environmental air exchange channel cannot interfere with exhaust when the internal switch valve 10 is at least closed.
When in use: if only internal circulation heating is needed, the air guide channel 2 is opened at the moment, namely the dehumidification fan 6, the internal switch valve 10, the exhaust valve and the fresh air valve are all closed at the moment, so that the air introduced from the air return opening 4 directly flows to the air inlet side of the heating device 3 through the cavity; when the inner circulation dehumidification is needed, the inner circulation dehumidification channel 1 is opened, the environment wind exchange channel is closed, the dehumidification fan 6 and the internal switch valve 10 are opened, and the fresh air valve and the exhaust valve are closed; when the external circulation dehumidification and/or heating is needed, at the moment, even if the internal circulation dehumidification channel 1 is closed and the ambient air exchange channel is opened, the dehumidification fan 6, the fresh air valve and the exhaust valve are all opened, and the internal switch valve 10 is closed.
For convenience of uniform arrangement, the heating device 3 is preferably a condenser, and an outdoor evaporator 15 located in an outdoor environment is further required to be arranged, and the dehumidification evaporator 9 is arranged in the internal circulation dehumidification channel 1, and the heat exchange channel of the outdoor evaporator 15 and the heat exchange channel of the dehumidification evaporator 9 are arranged in parallel and are connected in series with the heat exchange channel of the condenser in the same refrigerant refrigeration system. Correspondingly, the refrigerant refrigeration system generally needs to be provided with a compressor 11 correspondingly, and the dehumidification evaporator 9 and the outdoor evaporator 15 are connected in parallel between the compressor 11 and the condenser. The condenser radiates heat outwards, and then the heating effect is achieved. Wherein, in order to accelerate the air flow, an accelerating fan 14 is generally arranged on the air outlet side of the condenser, namely the air outlet side of the heating device 3, and the air outlet side of the outdoor evaporator 15
Considering the drying chamber, in different drying stages, the required heat is not completely the same, based on this, in order to better adapt to different products, drying requirements such as different stages, it is preferable that the outdoor evaporator 15, the dehumidifying evaporator 9 and the condenser are equally provided with two heat exchange channels, and are correspondingly connected to form two groups of refrigerant refrigeration systems, that is, two groups of compressors 11 are correspondingly provided, for convenience of description, the two groups of compressors are respectively a first compressor and a second compressor, and the outdoor evaporator 15, the dehumidifying evaporator 9 and the condenser are equally provided with a first heat exchange channel and a second heat exchange channel, the first heat exchange channel of the outdoor evaporator 15 and the first heat exchange channel of the dehumidifying evaporator 9 are connected in parallel between the first heat exchange channels of the first compressor and the condenser, and the second heat exchange channel of the outdoor evaporator 15 and the second heat exchange channel of the dehumidifying evaporator 9 are connected in parallel between the second compressor and the second heat exchange channel of the condenser Between the two heat exchange channels, when only one group of refrigerant refrigerating systems is arranged, the latter is not communicated. The multi-refrigerant refrigerating system can solve the problem of temperature fluctuation caused by output fluctuation caused by the fact that the heat quantity required for maintaining the temperature stability of the dry bulb and the cold quantity required for maintaining the temperature stability of the wet bulb change in different process stages.
For better control of the heating degree and the dehumidification effect, it is preferable here that in the two refrigerant refrigeration systems, the compressor 11 in at least one refrigerant refrigeration system is an inverter compressor, i.e. the first compressor and/or the second compressor is an inverter compressor. The frequency conversion system can solve the problem of temperature fluctuation caused by starting and stopping control of the frequency conversion system.
In the two groups of refrigerant refrigeration systems, the heat exchange channel of the outdoor evaporator 15 and the inlet side of the heat exchange channel of the dehumidification evaporator 9 are respectively connected with an electronic expansion valve 12, and the outlet side of the heat exchange channel of the outdoor evaporator 15 and/or the outlet side of the heat exchange channel of the dehumidification evaporator 9 are/is correspondingly provided with a switch valve 13. The valve port adjustment through the electronic expansion valve 12 can change the fluid distribution, that is, the opening and closing degree of the electronic expansion valve 12 correspondingly connected with the dehumidification evaporator 9 can be adjusted according to the indoor dehumidification degree requirement, so that the flow regulation can be realized, and the dehumidification degree regulation can be further realized, and the heating performance of the condenser 3 of the heating device can not be changed at the moment.
Specifically, for one of the refrigerant refrigeration systems, the switching valve 13, the outdoor evaporator 15 and one electronic expansion valve 12 are sequentially connected in series to form a first branch, the dehumidification evaporator 9 and the other electronic expansion valve 12 form a second branch, the first branch and the second branch are connected in parallel between the four-way valve and the liquid storage device, the electronic expansion valves 12 are all arranged at one ends of the branches close to the liquid storage device, the condenser is connected in series between the other port of the four-way valve and the liquid storage device, and the compressor 11 is communicated with the other two ports of the four-way valve. The four-way valve can change the communication relation among the four ports according to the requirement. Wherein, a gas-liquid separator is communicated between the inlet of the compressor 11 and the corresponding port of the four-way valve, a low-pressure sensor, a low-pressure switch and a low-temperature probe are communicated between the gas-liquid separator and the four-way valve, and a temperature-discharging probe, a high-pressure sensor and a high-pressure switch are communicated between the outlet of the compressor 11 and the corresponding port of the four-way valve.
Specifically, when the condenser is used, when the heat required by the condenser is small, that is, the heating power requirement of the heating device 3 is not high, and the temperature of a wet bulb in the baking room is lower than a set value and no dehumidification is needed, only one refrigerant refrigeration system is started at the moment, and the refrigerant refrigeration system where the variable frequency compressor is located is preferred. At this time, the refrigerant side runs through the flow path: from the inverter compressor → the four-way valve → the condenser → the accumulator → the electronic expansion valve 12 → the dehumidifying evaporator 6 or the outdoor evaporator 15 → the four-way valve → the gas-liquid separator → the inverter compressor. Through the regulation of the electronic expansion valve 12, to control the flow to the dehumidification evaporator 6 or to the outdoor evaporator 15.
When the heat required by the condenser is small, namely the requirement on the heating power of the heating device 3 is not high, the temperature of a wet bulb in the curing barn is greater than a set value, and one or more refrigerant refrigerating systems are started when dehumidification is needed, and the system where the variable frequency compressor is located is optimized. At this time, the refrigerant side runs through the flow path: from the inverter compressor → the four-way valve → the condenser → the accumulator → the electronic expansion valve 12 → the dehumidifying evaporator 6 → the four-way valve → the gas-liquid separator → the inverter compressor. That is, at this time, the electronic expansion valve 12 corresponding to the outdoor evaporator 15 is closed, and the electronic expansion valve 12 corresponding to the dehumidification evaporator 6 is opened.
When the heat required by the condenser is large, namely the heating power requirement of the heating device 3 is high, the temperature of a wet bulb in the curing barn is smaller than a set value, so that when dehumidification is not needed, one or more refrigerant refrigerating systems can be selected to be started, and if one refrigerant refrigerating system is selected, the system where the variable frequency compressor is located is preferably selected. At this time, the refrigerant side runs through the flow path: from the inverter compressor → the four-way valve → the condenser → the accumulator → the electronic expansion valve 12 → the dehumidifying evaporator 6 and/or the outdoor evaporator 15 → the four-way valve → the gas-liquid separator → the inverter compressor. Through the regulation of the electronic expansion valve 12, to control the flow to the dehumidification evaporator 6 or to the outdoor evaporator 15.
When the heat required by the condenser is large, namely the heating power requirement of the heating device 3 is high, the temperature of the wet bulb in the curing barn is larger than a set value, so that when dehumidification is needed, a plurality of refrigerant refrigerating systems, preferably systems where the variable frequency compressor is located, are started. At this time, the refrigerant side runs through the flow path: from the inverter compressor → the four-way valve → the condenser → the accumulator → the electronic expansion valve 12 → the dehumidifying evaporator 6 → the four-way valve → the gas-liquid separator → the inverter compressor. At this time, the electronic expansion valve 12 corresponding to the dehumidification evaporator 6 is opened, and if the heating amount does not meet the requirement, the electronic expansion valve 12 corresponding to the outdoor evaporator 15 may be further opened, and the dehumidification degree and the heating degree may be controlled by adjusting the opening and closing degrees of the electronic expansion valve 12 corresponding to the dehumidification evaporator 6 and the electronic expansion valve 12 corresponding to the outdoor evaporator 15, respectively.
Furthermore, in order to facilitate the controller to perform data judgment in time, the controller preferably further comprises an outdoor humidity detector for detecting the humidity of the outdoor environment, an outdoor temperature detector for detecting the temperature of the outdoor environment, an indoor humidity detector for detecting the humidity of the drying chamber, an indoor temperature detector for detecting the temperature of the drying chamber, an air supply temperature detector for detecting the air supply temperature of the internal circulation dehumidification channel 1, and an air supply humidity detector for detecting the air supply humidity of the internal circulation dehumidification channel 1; wherein the outdoor humidity detector, the outdoor temperature detector, the indoor humidity detector, the indoor temperature detector, the air supply temperature detector and the air supply humidity detector are all connected with the controller to transmit detection values to the controller.
The controller can judge whether need the heating according to indoor temperature detector testing result, and can further judge the volume of need heating according to the testing result, if the volume of heating is little, then open single refrigerant refrigerating system and/or exchange wind passageway through the environment wind and introduce the wind body and heat, if the volume of heating is big, then can open two refrigerant refrigerating system to improve the condenser, heating device 3's heating efficiency promptly.
The simultaneous control ware can also judge whether need the dehumidification according to indoor moisture detector's testing result to detect according to outdoor environment moisture detector and air feed moisture detector, change wind passageway or inner loop dehumidification passageway 1 with the selection environment wind and dehumidify, make when 1 air feed humidity of inner loop dehumidification passageway is higher than outdoor environment humidity inner loop dehumidification passageway closes and makes environment wind trades the wind passageway and opens. In the dehumidification process, whether the detection value of the air supply temperature detector is lower than or obviously lower than the outdoor environment temperature can be further judged, and if yes, the internal circulation dehumidification channel 1 can be closed and the environment air exchange channel can be opened. The temperature detector is mainly represented by dry bulb temperature, and the humidity detector is mainly represented by wet bulb temperature.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a drying chamber regulation and control system, its characterized in that trades wind passageway, inner loop dehumidification passageway and controller including the environment wind, the controller is just when needing the dehumidification the inner loop dehumidification passageway air feed humidity makes when being higher than outdoor environment humidity the inner loop dehumidification passageway is closed and is made the environment wind trades the wind passageway and opens.
2. The drying chamber regulation and control system of claim 1, further comprising an air guide channel and a heating device, wherein the heating device can supply air to an air supply port of an air inlet channel of the ambient air ventilation channel and supply air to an air supply port of the internal circulation dehumidification channel for heating, and the controller can control the ambient air ventilation channel and the internal circulation dehumidification channel to be closed when the humidity in the drying chamber meets a set range, so that the air guide channel directly guides air in the drying chamber to the heating device for heating.
3. The drying chamber regulation and control system according to claim 2, wherein the controller is capable of controlling the opening of the ambient air ventilation channel when the outdoor ambient humidity meets a set range and the outdoor ambient temperature is higher than the temperature in the drying chamber.
4. The drying chamber conditioning system according to claim 3, wherein the controller closes the internal circulation dehumidification channel and opens the ambient air ventilation channel when dehumidification is required and when the air supply temperature of the internal circulation dehumidification channel is lower than the outdoor ambient temperature.
5. The drying chamber regulation system according to any one of claims 2 to 4, comprising a return air inlet, an air supply outlet and a dehumidifying fan, wherein the return air inlet, an air supply side of the dehumidifying fan and an air supply side of the heating device are communicated with each other through a cavity, an air outlet side of the dehumidifying fan is respectively communicated with an air exhaust channel of the ambient air ventilating channel and an air inlet of the internal circulation dehumidifying channel, the air supply outlet of the internal circulation dehumidifying channel and the air supply channel of the ambient air ventilating channel are both communicated with the heating device, the air exhaust channel of the ambient air ventilating channel is provided with an air exhaust valve, the air supply channel is provided with a fresh air valve, and the internal circulation dehumidifying channel is provided with an internal switch valve.
6. The drying chamber regulation and control system according to claim 5, further comprising an outdoor evaporator, wherein the heating device is a condenser, a dehumidifying evaporator is arranged in the internal circulation dehumidifying channel, a heat exchanging channel of the outdoor evaporator and a heat exchanging channel of the dehumidifying evaporator are arranged in parallel and are both connected in series with the heat exchanging channel of the condenser in the same refrigerant refrigerating system.
7. The drying chamber regulation and control system according to claim 6, wherein the outdoor evaporator, the dehumidifying evaporator and the condenser are respectively provided with two heat exchange channels, and are respectively and correspondingly connected to form two groups of refrigerant refrigerating systems.
8. The drying chamber conditioning system according to claim 7, wherein the compressor in at least one of the two refrigerant refrigeration systems is an inverter compressor.
9. The drying chamber regulation and control system according to claim 8, wherein in the two refrigerant refrigeration systems, the heat exchange channel of the outdoor evaporator and the inlet side of the heat exchange channel of the dehumidification evaporator are respectively connected with an electronic expansion valve, and the outlet side of the heat exchange channel of the outdoor evaporator and/or the outlet side of the heat exchange channel of the dehumidification evaporator are/is correspondingly provided with a switch valve.
10. The drying chamber regulation and control system according to any one of claims 2 to 4 and 5 to 9, comprising an outdoor humidity detector for detecting the humidity of the outdoor environment, an outdoor temperature detector for detecting the temperature of the outdoor environment, an indoor humidity detector for detecting the humidity of the drying chamber, an indoor temperature detector for detecting the temperature of the drying chamber, an air supply temperature detector for detecting the air supply temperature of the inner circulation dehumidification channel, and an air supply humidity detector for detecting the air supply humidity of the inner circulation dehumidification channel; the outdoor humidity detector, the outdoor temperature detector, the indoor humidity detector, the indoor temperature detector, the air supply temperature detector and the air supply humidity detector are all connected with the controller to transmit detection values to the controller.
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| JP2005341979A (en) * | 2004-05-31 | 2005-12-15 | Gac Corp | Storage apparatus |
| CN105686039A (en) * | 2014-11-28 | 2016-06-22 | 宜昌益烟机械设备有限公司 | Tobacco air-curing shed |
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