CN107806675B - Four-season type air-cooled dehumidification system and control method thereof - Google Patents
Four-season type air-cooled dehumidification system and control method thereof Download PDFInfo
- Publication number
- CN107806675B CN107806675B CN201610810899.2A CN201610810899A CN107806675B CN 107806675 B CN107806675 B CN 107806675B CN 201610810899 A CN201610810899 A CN 201610810899A CN 107806675 B CN107806675 B CN 107806675B
- Authority
- CN
- China
- Prior art keywords
- temperature
- air
- auxiliary
- controlling
- condenser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-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
- F24F3/12—Air-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
- F24F3/14—Air-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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-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
- F24F3/12—Air-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
- F24F3/14—Air-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
- F24F2003/144—Air-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 dehumidification only
- F24F2003/1446—Air-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 dehumidification only by condensing
-
- 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
Abstract
The invention is suitable for the field of dehumidification, and provides an four-season type air-cooled dehumidification system, which further comprises: a heat exchange device connected to the refrigerating device for exchanging heat between air before entering the evaporator and air processed by the evaporator; the auxiliary condensing device is arranged on the outlet channel of the heat exchange device and comprises an auxiliary condenser, and the auxiliary condenser is connected with the main condenser in series; the post-heating device is arranged behind the auxiliary condensing device and used for heating the air flowing through; an air outlet fan arranged at the outlet of the dehumidification system and used for outputting air; and a system control device for controlling the system operation according to the monitored temperature, humidity and refrigerant pressure data. Compared with the prior art, the rotary dehumidifier is omitted, the heat exchange device and the auxiliary condensing device are additionally arranged, so that the power consumption of the system can be greatly reduced on the premise of meeting the dehumidification requirement in the four-season environment, and a good energy-saving and emission-reducing effect is achieved.
Description
Technical Field
The invention belongs to the field of dehumidification equipment, and particularly relates to an four-season type air-cooled dehumidification system and a control method thereof.
Background
The four-season dehumidifier is one of the indispensable technological equipments in the field of ship manufacturing, and has the function of providing a necessary low humidity environment for the technological processes of sand blasting (rust removal) and spraying (paint spraying) in shipyards. The four-season dehumidifier can provide dry air meeting the sand blasting and spraying requirements of shipbuilding factories under various environmental temperature and humidity conditions all the year round.
As shown in fig. 1, the existing four-season dehumidifier adopts a combined dehumidifier, and the dehumidification process of the dehumidifier consists of a refrigeration dehumidification part and a rotating wheel dehumidification part, wherein the refrigeration dehumidification part is a large amount of dehumidification, the rotating wheel dehumidification part is a deep dehumidification part, and the dehumidification amount is small. The dehumidifying process comprises the following steps: the ambient air (high humidity) is sucked into a refrigerating device part of the combined dehumidifier by a treatment fan and is cooled to below 16 ℃ so that part of moisture is separated out from the air to primarily reduce the humidity of the air; the air after preliminary dehumidification enters the rotating wheel dehumidification device, moisture in the air is further reduced to the moisture content of the air required by the technical environment of sand blasting and spraying of shipyards by utilizing the hygroscopicity of the rotating wheel silica gel molecules, meanwhile, the temperature of the air treated by the rotating wheel is increased to a certain extent due to the principle of rotating wheel dehumidification, and finally the temperature of the air is adjusted to 25 ℃ through electric heating, so that the treated air meeting the requirements of rust removal and spraying is finally generated.
However, because the rotating wheel dehumidification device with small dehumidification amount and high power consumption exists, and the equipment has serious repeated power consumption, the equipment has high power consumption, and the energy conservation and the emission reduction are not facilitated.
Disclosure of Invention
The embodiment of the invention provides an four-season air-cooled dehumidifier and a control method thereof, which aim to solve the problems that equipment has larger power consumption and is unfavorable for energy conservation and emission reduction.
The embodiment of the invention is realized in such a way that the four-season type air-cooled dehumidification system comprises a refrigeration device, wherein the refrigeration device comprises a compressor, a main condenser, an electromagnetic valve, an expansion valve group and an evaporator which are sequentially connected to form a circulation loop, and the four-season type air-cooled dehumidification system further comprises an air-cooled condenser for cooling the refrigerant of the refrigeration device, and the dehumidification system further comprises:
a heat exchange device connected with the refrigerating device and used for exchanging heat between the hot air before entering the evaporator and the cold air processed by the evaporator;
the auxiliary condensing device is arranged on the outlet channel of the heat exchange device and comprises an auxiliary condenser, and the auxiliary condenser is connected with the main condenser in series;
the post-heating device is arranged behind the auxiliary condensing device and used for heating the air flowing through;
an air outlet fan arranged at the outlet of the dehumidification system and used for outputting air; and
the system control device is used for controlling the system to operate according to the temperature and humidity and pressure data, and comprises a pressure sensing transmitter arranged between the compressor and the main condenser.
The embodiment of the invention also provides a control method based on the system, which comprises the following steps:
the method comprises the following steps:
acquiring temperature, temperature and humidity or pressure data received by a system control device;
if the temperature or temperature and humidity data reach a preset threshold, controlling the system to enable the air processed by the system to meet preset conditions, wherein the method comprises the following steps:
detecting the external environment temperature of the system, and controlling the heat dissipation capacity of the refrigerating device and the air outlet temperature of the dehumidifier by controlling the on/off of an auxiliary condenser in the auxiliary condensing device, the on/off of the heat exchange device and the working power of the variable-frequency condensing fan 121 if the environment temperature reaches a preset environment temperature threshold;
detecting a refrigerant pressure value between the compressor and the main condenser in the refrigeration device, and controlling the heat dissipation capacity of the refrigeration device by controlling the air quantity flowing through the auxiliary condenser when the refrigerant pressure value reaches a preset pressure threshold value;
detecting the temperature of air treated by an evaporator at an air outlet of the refrigerating device, and controlling the refrigerating capacity of the refrigerating device by controlling the power of a compressor of the refrigerating device if the temperature of the air treated by the evaporator reaches a preset refrigerating temperature threshold;
and detecting the temperature and the humidity of the air dehumidified by the system at the air outlet of the system, and controlling the air quantity flowing through the auxiliary condensing device and the working power of the post-heating device to enable the temperature and the humidity of the air dehumidified by the system to meet the preset conditions if the temperature and the humidity reach the preset air outlet temperature and humidity threshold.
Compared with the prior art, the rotating wheel dehumidification device with small dehumidification capacity and large power consumption is removed, and the heat exchange device for carrying out heat exchange between the hot air before entering the evaporator and the cold air processed by the evaporator and the auxiliary condensing device for improving the refrigerating capacity of the refrigerating device are applied to the dehumidification system, so that the energy consumption is greatly reduced and the energy saving and emission reduction requirements of enterprises can be met on the premise that the dehumidification system meets specific wide normal working temperature and dehumidification requirements.
Drawings
FIG. 1 is a four season type air cooled dehumidification system provided by the prior art;
FIG. 2 is a schematic diagram of an overall structure of a four-season type air-cooled dehumidification system according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a split structure of a four-season type air-cooled dehumidification system according to another embodiment of the present invention;
fig. 4 is a front view of a heat exchange device according to an embodiment of the present invention;
FIG. 5 is a schematic view of an auxiliary condensing device according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a refrigerating apparatus according to an embodiment of the present invention;
fig. 7 is a flow chart of a four-season type air-cooled dehumidification system control method according to an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In this embodiment, the rotating wheel dehumidification device with small dehumidification capacity and large power consumption is removed, and the heat exchange device 2 for performing heat exchange between the air before entering the evaporator and the air processed by the evaporator and the auxiliary condensing device 3 for improving the refrigerating capacity of the evaporator are applied to the dehumidification system, so that the energy consumption of the dehumidification system is greatly reduced on the premise of meeting specific wide normal working temperature and dehumidification requirements, and the requirements of enterprises on energy conservation and emission reduction can be met.
Fig. 2 and 3 show two four-season type air-cooled dehumidification systems, respectively: the overall structure schematic and the split structure schematic are shown only for convenience of explanation, and only the parts related to the embodiments of the present invention are shown.
Both of the two schematic diagrams include related structures for realizing the technical effects of the present invention, and the following description will be given by taking the schematic diagram of the whole structure of the four-season type air-cooled dehumidification system as an example. The system includes a refrigerating apparatus including a compressor, a main condenser 11, an electromagnetic valve, an expansion valve group, and an evaporator 23 connected in this order to form a circulation circuit, and further including an air-cooled cooling tower 12 for performing a cooling process for the main condenser 11, and the dehumidification system further includes:
a heat exchange device 2 connected to the refrigerating device 1 and configured to exchange heat between air before entering the evaporator 23 and air processed by the evaporator 23;
an auxiliary condensing unit 3 provided on an outlet passage of the heat exchanging unit 2, comprising an auxiliary condenser 32, the auxiliary condenser 32 being connected in series with the main condenser 11;
a post-heating device 4 provided behind the auxiliary condensing device 3 for heating the air flowing therethrough;
an air outlet fan 5 arranged at the outlet of the dehumidification system and used for discharging air; and
and a system control device 18 for controlling the operation of the system based on the monitored temperature, humidity and pressure data.
Compared with the prior art, the rotating wheel dehumidification device with small dehumidification capacity and large power consumption is removed, and the heat exchange device for carrying out heat exchange between the hot air before entering the evaporator 23 and the cold air processed by the evaporator 23 and the auxiliary condensing device for improving the refrigerating capacity of the refrigerating device are applied to the dehumidification system, so that the energy consumption is greatly reduced and the energy saving and emission reduction requirements of enterprises can be met on the premise that the dehumidification system meets specific wide normal working temperature and dehumidification requirements.
Fig. 4 shows the structure of the heat exchange device 2, and for convenience of explanation, only the portions related to the embodiments of the present invention are shown
As an embodiment of the present invention, the heat exchange device 2 includes a heat exchanger 21, the heat exchanger 21 includes a first channel 211 and a second channel 212 contacting each other to realize heat exchange, the first channel 211 communicates with the inlet of the evaporator 23 and the outside of the system, and one end of the second channel 212 is connected to the outlet of the evaporator 23.
Preferably, the first channels 211 are a plurality of groups of first channel 211 tube groups arranged in parallel, the second channels 212 are a plurality of second channel 212 tube groups which are arranged in a staggered and perpendicular manner with the first channel 211 tube groups so as to realize heat exchange with the first channel 211 tube groups, and the structures of the first channel 211 tube groups and the second channel 212 tube groups can be beneficial to improving the heat exchange efficiency of the air flowing through the first channel 211 tube groups in the inlet system and the cold air processed by the refrigerating system.
The heat exchanger 21 may also be configured in other ways to exchange heat between the air before entering the evaporator 23 and the air after being treated by the evaporator 23.
In this embodiment, the heat exchange device 2 further includes a bypass passage 22 disposed beside the heat exchanger 21 and communicating with the inlet of the evaporator 23 and the outside of the system; and gate valves controlled by the system control device 18 to gate the first channel 211 and the bypass channel 22, the gate valves including a first gate valve controlling the inlet of the first channel 211 and a second gate valve controlling the inlet of the second channel 212.
In this embodiment, an air filter screen is disposed at the inlet of the first channel 211 and at the inlet of the evaporator 23 to filter the air entering the system, and the heat exchange device 2 is further provided with a housing for sealing the heat exchange device 2, so as to improve the service life of the device and the system.
By using the gate valve to gate the air entering the system into the first channel 211 or the bypass channel 22 in the heat exchanger 21, when the ambient temperature is higher, the first gate valve can be controlled to be opened, and the second gate valve is closed, so that the external air exchanges heat with the cold air processed by the evaporator 23 flowing through the second channel 212 via the first channel 211, on one hand, the temperature of the air entering the system can be reduced, the refrigerating capacity of the refrigerating device 1 and the power consumption of the refrigerating device 1 can be reduced, on the other hand, the temperature of the cold air processed by the evaporator 23 can be increased, the subsequent requirement on the increase of the power consumption of the cooling air can be reduced, and the energy consumption of the system can be remarkably reduced by arranging the heat exchange device 2.
Fig. 5 shows a schematic structural diagram of an auxiliary condensing device 3 of an four-season type air-cooled dehumidifying system, and only parts related to the embodiments of the present invention are shown for convenience of explanation.
As an embodiment of the present invention, the auxiliary condenser 32 has one end connected to the main condenser 11 and the other end connected to the solenoid valve 14, and includes a first auxiliary condenser 321 and a second auxiliary condenser 322 integrally connected;
the auxiliary condensing device 3 further includes:
an air volume adjusting valve group 31 for adjusting the air volume flowing through the auxiliary condenser 32, wherein the air volume adjusting valve group 31 comprises a first adjusting valve 311 which is integrally connected and controls the air volume flowing through the first auxiliary condenser 321, a second adjusting valve 312 which controls the air volume flowing through the second auxiliary condenser 322, and a third adjusting valve 313 which bypasses the auxiliary condenser 32; and
and a partition plate for partitioning between the auxiliary condensers and between the regulating valves.
The second regulating valve 312 and the first regulating valve 311 are controlled by the system control device 18 to act in opposite directions to ensure the smoothness of the air duct.
The first regulating valve 311, the second regulating valve 312, and the third regulating valve 313 are controlled by the system control device 18 to regulate the air quantity flowing through the auxiliary condenser 32, thereby affecting the condensation efficiency and the heat dissipation capacity of the auxiliary condenser 32, and finally affecting the refrigerating capacity of the refrigerating system.
In this embodiment, the auxiliary condensing device 3 is provided to improve the maximum refrigerating capacity of the refrigerating system, so that the refrigerating system can realize normal operation in a working environment with a lower temperature below 16 ℃. Meanwhile, the cold air treated by the evaporator 23 acquires heat emitted by the auxiliary condenser 32, and the temperature of the air flowing through the evaporator is increased, so that the requirement of the post-heating device 4 can be reduced, and the effect of reducing energy consumption is achieved.
Fig. 6 is a schematic structural diagram of a refrigerating device 1 of an four-season air-cooled dehumidifying system according to an embodiment of the present invention, and for convenience of explanation, only the portions related to the embodiment of the present invention are shown.
As an embodiment of the present invention, the refrigeration apparatus 1 includes a compressor 17, a main condenser 11, a solenoid valve 14, an expansion valve group 15, and an evaporator 23, which are sequentially connected to form a circulation circuit, and a variable frequency condensing fan 121 for forcibly radiating heat from the main condenser 11.
In this embodiment, the refrigeration apparatus 1 further comprises a three-way solenoid valve 13 controlled by the system control device 18 to gate the refrigerant, the three-way solenoid valve having an inlet connected to the refrigerant output of the main condenser 11, a first outlet connected to the auxiliary condenser 32, and a second outlet connected to the solenoid valve 14.
If the temperature of the air in the operation of the apparatus is higher, the system control device 18 may control the first outlet of the three-way electromagnetic valve 13 to be closed and open the second outlet, so that the refrigerant in the refrigeration device 1 directly passes through the electromagnetic valve 14 without passing through the auxiliary condenser 32, and the auxiliary condenser 32 is closed, so as to prevent the air outlet temperature of the dehumidifier from being higher than the set air outlet temperature.
If the temperature of the air in the operation of the apparatus is low, the system control device 18 may control the first outlet of the three-way electromagnetic valve 13 to open and close the second outlet, so that the refrigerant in the refrigeration device 1 passes through the auxiliary condenser 32, to enable the auxiliary condenser 32 to dissipate heat, adjust the air-out temperature of the dehumidifier at the set value, and simultaneously help the main condenser 11 of the refrigeration device 1 to dissipate heat, and reduce the energy consumption of the variable-temperature condensing fan 121 when the main condenser 11 dissipates heat.
By setting the action value of the three-way electromagnetic valve 13 to control the on-off of the auxiliary condensing device 3, the heat dissipation of the main condenser 11 of the auxiliary refrigerating device 1 can be better, so that the system can keep normal operation under wider environmental temperature. The energy consumption of the variable frequency condensing fan 121 can also be reduced. Meanwhile, the auxiliary condensing device 3 can play a role of increasing a heat source, so that the air flowing through the auxiliary condensing device 3 can obtain a certain temperature increase, the operating pressure of the rear heating device 4 is reduced, and the power consumption of the rear heating device 4 is reduced.
As an embodiment of the present invention, the system control device 18 includes:
a first temperature sensor for detecting an ambient temperature outside the system;
a second temperature sensor provided at an outlet of the evaporator 23 to detect a temperature of the air processed by the evaporator 23; and
and the data processing unit is used for collecting data of the first temperature sensor, the second temperature sensor and the pressure sensing transmitter so as to process and control all parts of the system.
The system control device 18 timely acquires the ambient temperature and the temperature and pressure conditions of all parts by arranging the first temperature sensor, the second temperature sensor and the pressure sensing transmitter, so that the dehumidification system controls the operation of all parts on the dehumidification system according to the ambient temperature and the temperature and pressure conditions of all parts. More intelligent and fine action adjustment can be made according to the conditions.
As an embodiment of the invention, the condenser is provided with a variable frequency condensing fan 121 controlled by the system control 18 to vary the operating power.
For example, when the system control device 18 detects that the condensing pressure of the condenser of the refrigeration device 1 is high, the operation power of the variable frequency condensing fan 121 is increased to increase the heat dissipation capacity of the condenser of the refrigeration device 1.
Alternatively, when the system control device 18 detects that the condensing pressure of the condenser of the refrigeration device 1 is low, the operation power of the variable frequency condensing fan 121 is reduced to reduce the heat dissipation capacity of the condenser of the refrigeration device 1. This arrangement allows the refrigeration unit 1 to operate in a safe, stable and energy efficient range.
When the system control 18 detects that the ambient temperature is below the normal operating temperature of the refrigeration system, it may choose to shut down the refrigeration system.
In summary, the variable frequency condensing fan 121 is adopted to dissipate heat in the air-cooled condenser in the dehumidification system, the heat exchange device 2 and the auxiliary condensing device 3 are arranged, and the operation condition of the refrigeration device 1 can be adjusted by adjusting the variable frequency condensing fan 121, the heat exchange device 2 and the auxiliary condensing device 3, so that the dehumidification system can operate in an environment lower than 16 ℃. Moreover, by controlling and adjusting the device, the operation power consumption of the refrigerating device 1 can be greatly reduced on the premise that the condensation pressure and the condensation temperature in the refrigerating device 1 are kept in a proper range, and the obvious energy-saving and emission-reducing effects are achieved.
Fig. 7 is a flow chart of a four-season type air-cooled dehumidification system control method according to an embodiment of the present invention, and for convenience of explanation, only the portions related to the embodiment of the present invention are shown.
As an embodiment of the present invention, the present control method includes the steps of:
acquiring temperature, humidity or pressure data received by the system control device 18;
if the temperature, humidity or pressure data reaches a preset threshold, controlling the system to make the air processed by the system meet preset conditions, wherein the method comprises the following steps:
detecting the external environment temperature of the system, and controlling the air processed by the system to meet the preset condition by controlling the on-off of the auxiliary condenser 32 in the auxiliary condensing device 3, controlling the on-off of the heat exchange device 2 and controlling the working power of the variable frequency condensing fan 121 if the environment temperature reaches the preset environment temperature threshold;
detecting a refrigerant pressure value between the compressor and the main condenser 11 in the refrigerating device 1, and controlling the condensing pressure and the condensing temperature of the refrigerating device 1 by controlling the working efficiency of the auxiliary condensing device 3 when the refrigerant pressure value reaches a preset pressure threshold;
detecting the temperature of the air processed by the evaporator 23 at the air outlet of the evaporator 23, and controlling the refrigerating capacity of the refrigerating device 1 by controlling the power of the compressor 17 of the refrigerating device 1 if the temperature of the air processed by the evaporator 23 reaches a preset refrigerating temperature threshold;
and detecting the temperature and the humidity of the air subjected to the dehumidification treatment by the system at the air outlet position of the system, and controlling the air quantity flowing through the auxiliary condensing device 3 and the working power of the post-heating device 4 to enable the temperature and the humidity of the air subjected to the dehumidification treatment to meet the preset conditions if the temperature and the humidity reach the preset air outlet temperature and humidity threshold.
In the embodiment of the present invention, as a preferred mode, the method includes performing gate control on the refrigerant at the outlet of the three-way electromagnetic valve 13 in the refrigerating device 1, so as to determine the on/off of the auxiliary condenser 32 in the auxiliary condensing device 3, so as to control the refrigerating capacity of the refrigerating device 1 and the air-out temperature of the dehumidifier;
the gating valve in the heat exchange device 2 is controlled to gate the first channel 211 and the bypass channel 22, so as to realize the on-off control of the heat exchange device 2, thereby controlling the refrigerating capacity of the refrigerating device 1.
In the embodiment of the invention, if the ambient temperature is T1, and when T1 is greater than a preset threshold value, the refrigeration device 1 does not need to use the auxiliary condensing device 3 to adjust the air-out temperature of the dehumidifier, the first outlet of the three-way electromagnetic valve 13 is closed, the second outlet of the three-way electromagnetic valve 13 is opened, so that the refrigerant flowing through the three-way electromagnetic valve 13 directly bypasses the auxiliary refrigerator of the auxiliary refrigeration device 1 and flows into the electromagnetic valve 14, and the auxiliary condensing device 3 is closed, thereby stopping the temperature rise of the auxiliary condenser 32 to the air-out of the dehumidifier; when T1 is smaller than a preset threshold, the refrigeration device 1 needs to use the auxiliary condensing device 3 to adjust the air-out temperature of the dehumidifier, then the first outlet of the three-way electromagnetic valve 13 is opened, the second outlet of the three-way electromagnetic valve 13 is closed, so that the refrigerant flowing through the three-way electromagnetic valve 13 flows into the auxiliary refrigerator of the auxiliary refrigeration device 1 and then flows out to the electromagnetic valve 14, so that the air processed by the evaporator 23 can flow through the hot auxiliary condensing device 3, the auxiliary condenser 32 of the auxiliary condensing device 3 further refrigerates the refrigerant, the refrigeration capacity of the refrigeration device 1 is increased, the power of the variable frequency condensing fan 121 of the condenser is reduced, and meanwhile, the temperature of the air-out of the dehumidifier is raised, and the power consumption of the post-heating device 4 is reduced.
In a preferred mode of the present invention, when the ambient temperature T1 is less than the preset threshold, in order to make the operation of the refrigeration apparatus 1 be in the optimal condition, the evaporation temperature of the evaporator 23 needs to be controlled to be too low, and the evaporation temperature of the evaporator 23 is increased by increasing the temperature of the air before entering the evaporator 23. At this time, the second gate valve 214 of the gate valve of the heat exchange device 2 is controlled to be opened, and the first gate valve 213 is closed at the same time, so that the air entering the system directly flows into the refrigerating device 1, the air outlet temperature of the ambient air after passing through the heat exchange device 2 and the evaporator 23 is prevented from being too low, the refrigerating device 1 is operated under safe and stable working conditions, and the power consumption required by the temperature rise of the air at the outlet of the evaporator 23 is reduced at the same time; when the ambient temperature T1 is greater than the preset threshold, from the viewpoint of energy saving, the temperature of the air before entering the evaporator 23 is expected to be lower, so as to reduce the required refrigerating capacity of the evaporator 23, so as to achieve the effect of large-scale energy saving of the refrigerating device 1, at this time, the second gate valve 214 of the gate valve of the heat exchange device 2 can be controlled to be closed, and the first gate valve 213 is opened at the same time, so that the air entering the system flows into the first channel 211 of the heat exchanger 21 to exchange heat with the air cooled by the refrigerating device 1 in the second channel 212, the temperature of the air entering the refrigerating device 1 is reduced, the purpose of reducing the running refrigerating capacity of the refrigerating device 1 can be achieved, and the power consumption of the refrigerating device 1 in the running process is greatly reduced.
As an embodiment of the present invention, the control method further includes:
the air quantity flowing through the auxiliary condenser 32 in the auxiliary condensing device 3 is controlled by controlling the air quantity regulating valve group 31 in the auxiliary condensing device 3.
In the present embodiment, if the refrigerant pressure between the compressor and the main condenser 11 is higher than the refrigerant pressure threshold, the second regulating valve 312 is opened and the third regulating valve 313 is closed, so that the air volume flowing through the auxiliary condenser 32 is increased, and the condensing pressure and the condensing temperature of the refrigerant are reduced;
when the refrigerant pressure between the compressor and the main condenser 11 is lower than the refrigerant pressure threshold, the second control valve 312 is closed and the third control valve 313 is opened to reduce the air volume flowing through the auxiliary condenser 32 and increase the condensing pressure and condensing temperature of the refrigerant.
As can be seen from the above, the system control device 18 can adjust the heat dissipation effect of the auxiliary condenser 32 by controlling the second adjusting valve 312 and the third adjusting valve 313 in the air volume adjusting valve group 31 in the auxiliary condensing device 3, so as to adjust the condensing pressure and condensing temperature of the refrigerating device 1, and reduce the running power consumption of the refrigerating device 1 as much as possible on the premise of ensuring the condensing pressure and condensing temperature of the refrigerating device 1.
As an embodiment of the present invention, the control method includes:
if the temperature in the temperature and humidity is higher than the preset temperature and humidity threshold value of the air outlet, the first regulating valve 311 is closed, so that the air quantity flowing through the auxiliary condenser 32 is reduced, and the temperature of the air outlet of the system is reduced;
if the temperature in the temperature and humidity is lower than the preset temperature and humidity threshold value of the air outlet, the first regulating valve 311 is opened to increase the air quantity flowing through the auxiliary condenser 32 and raise the temperature of the air outlet of the system.
When air flows through the auxiliary condenser 32 through the first regulating valve 311, the air obtains heat in the auxiliary condenser 32 due to the heat of the refrigerant absorbed while passing through the auxiliary condenser 32, so that the temperature of the air is increased, and the heating pressure of the post-heating device 4 is reduced, thereby reducing the power consumption of the post-heating device 4.
As an embodiment of the present invention, the control method further includes:
if the condensing pressure of the condenser of the refrigeration device 1 is higher than the preset threshold value, the rotation speed and power of the variable-frequency condensing fan 121 are increased, the condensing air quantity is increased, the heat dissipation capacity of the condenser is increased, and finally the condensing pressure and condensing temperature of the refrigeration device 1 are reduced, so that the refrigeration device 1 works in an optimal state;
if the condensing pressure of the condenser of the refrigeration device 1 is lower than the preset threshold value, the rotation speed and the power of the variable-frequency condensing fan 121 are reduced until the machine is stopped, the condensing air quantity is reduced until 0, the heat dissipation capacity of the condenser is reduced until 0, and finally the condensing pressure and the condensing temperature of the refrigeration device 1 are improved, so that the refrigeration device 1 works in an optimal state;
in summary, a plurality of sensors are provided to monitor the temperature, humidity and pressure data of each part of the dehumidification system, and then the refrigeration device 1, the heat exchange device 2, the auxiliary condenser 32 and the variable frequency condensing fan 121 in the dehumidification system are controlled by the monitored data, so as to adjust the refrigeration capacity of the dehumidification device, and the dehumidification system can operate in an environment lower than 16 ℃. In addition, by controlling and adjusting the heat exchange device 2, the auxiliary condensing device 3 and the variable frequency condensing fan 121, the condensing pressure and the condensing temperature in the refrigerating device 1 can be kept in a proper range, the running power consumption of the refrigerating device 1 is greatly reduced, and obvious energy saving and emission reduction effects are achieved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (14)
1. The utility model provides an four seasons formula air-cooled dehumidification system, includes refrigerating plant, refrigerating plant is including connecting gradually compressor, main condenser, three solenoid valve, expansion valve group that form circulation loop to and the evaporimeter, still including being used for with refrigerating plant's refrigerant carries out the air-cooled cooling tower of cooling treatment, its characterized in that, dehumidification system still includes:
a heat exchange device connected to the refrigerating device for exchanging heat between air before entering the evaporator and air processed by the evaporator;
the auxiliary condensing device is arranged on the outlet channel of the heat exchange device and comprises an auxiliary condenser, the auxiliary condenser is connected with the main condenser in series, one end of the auxiliary condenser is connected with the main condenser, and the other end of the auxiliary condenser is connected with the electromagnetic valve and comprises a first auxiliary condenser and a second auxiliary condenser which are integrally connected;
the auxiliary condensing device further includes: the air quantity regulating valve group is used for regulating the air quantity flowing through the auxiliary condenser and comprises a first regulating valve, a second regulating valve and a third regulating valve, wherein the first regulating valve, the second regulating valve and the third regulating valve are integrally connected and used for controlling the air quantity flowing through the first auxiliary condenser, the second regulating valve and the third regulating valve are used for controlling the air quantity flowing through the second auxiliary condenser, and the third regulating valve is used for bypassing the auxiliary condenser, and the first regulating valve, the second regulating valve and the third regulating valve are controlled by a system control device; and a partition plate for partitioning between the auxiliary condensers and between the regulating valves;
the post-heating device is arranged behind the auxiliary condensing device and used for heating the air flowing through;
an air outlet fan arranged at the outlet of the dehumidification system and used for outputting air; and
the system control device is used for controlling the system to operate according to the temperature and humidity and pressure data, and comprises a pressure sensing transmitter arranged between the compressor and the main condenser;
the refrigerating device further comprises a three-way electromagnetic valve controlled by the system control device to gate the refrigerant, the inlet of the three-way electromagnetic valve is connected with the refrigerant output end of the main condenser, the first outlet of the three-way electromagnetic valve is connected with the auxiliary condenser, and the second outlet of the three-way electromagnetic valve is connected with the electromagnetic valve.
2. The system of claim 1, wherein the heat exchange means comprises:
the heat exchanger comprises a first channel and a second channel which are in contact with each other to realize heat exchange, the first channel is communicated with the inlet of the evaporator and the outside of the system, and one end of the second channel is connected with the outlet of the evaporator.
3. The system of claim 2, wherein the heat exchanger further comprises:
a bypass passage provided beside the heat exchanger and communicating with the evaporator inlet and the outside of the system; and
the gating valves are controlled by the system control device to gate the first channel and the bypass channel, and comprise a first gating valve for controlling the inlet of the first channel and a second gating valve for controlling the inlet of the bypass channel.
4. A system according to claim 3, wherein an airstrainer is provided at both the first passage inlet and the evaporator inlet.
5. The system of claim 4, wherein the second and third regulator valves are controlled by the system control device to act in opposite directions.
6. The system of claim 5, wherein the system control device further comprises:
a first temperature sensor for detecting an ambient temperature outside the system;
the second temperature sensor is arranged at the outlet of the evaporator and used for detecting the temperature of the air processed by the evaporator;
and a data processing unit for collecting the data of the first temperature sensor, the second temperature sensor and the pressure sensing transmitter to process and control each part of the system.
7. The system of claim 6, wherein the system control device further comprises a temperature and humidity sensor disposed at the system outlet to detect the temperature and humidity of the dehumidified air.
8. The system of claim 7 wherein said main condenser is provided with a variable frequency condensing fan controlled by said system control means to vary operating power.
9. A control method based on the system of claim 8, comprising the steps of:
acquiring temperature, temperature and humidity or pressure data received by a system control device;
if the temperature, humidity or pressure data reach a preset threshold, controlling the system to make the air processed by the system meet preset conditions, wherein the method comprises the following steps:
detecting the external environment temperature of the system, and controlling the air processed by the system to meet preset conditions by controlling the on-off of an auxiliary condenser in the auxiliary condensing device, controlling the on-off of the heat exchange device and controlling the working power of the variable frequency condensing fan if the environment temperature reaches a preset environment temperature threshold;
detecting a refrigerant pressure value between the compressor and the main condenser in the refrigeration device, and controlling the condensation pressure and the condensation temperature of the refrigeration device by controlling the working efficiency of the auxiliary condensation device when the refrigerant pressure value reaches a preset pressure threshold value;
detecting the temperature of the air processed by the evaporator at the air outlet of the evaporator, and controlling the refrigerating capacity of the refrigerating device by controlling the power of the compressor of the refrigerating device if the temperature of the air processed by the evaporator reaches a preset refrigerating temperature threshold;
and detecting the temperature and the humidity of the air dehumidified by the system at the air outlet of the system, and controlling the air quantity flowing through the auxiliary condensing device and the working power of the post-heating device to enable the temperature and the humidity of the air dehumidified by the system to meet the preset conditions if the temperature and the humidity reach the preset air outlet temperature and humidity threshold.
10. The control method as set forth in claim 9, wherein the detecting the ambient temperature outside the system, if the ambient temperature reaches a preset ambient temperature threshold, controlling the refrigeration capacity of the refrigeration device by controlling the on/off of the auxiliary condenser in the auxiliary condensation device, controlling the on/off of the heat exchange device, and controlling the operating power of the variable frequency condensing fan, includes:
the method comprises the steps of performing gating control on a refrigerant at an outlet of a three-way electromagnetic valve in the refrigerating device, and further determining the on-off of an auxiliary condenser in the auxiliary condensing device so as to control the refrigerating capacity of the refrigerating device and the air outlet temperature of a dehumidifier; and/or
And the gating valve in the heat exchange device is controlled to gate the first channel and the bypass channel, so that the opening and closing control of the heat exchange device is realized, and the refrigerating capacity of the refrigerating device and the evaporating pressure of the evaporator are controlled.
11. The control method as set forth in claim 10, wherein the controlling the gating valve in the heat exchange device to gate the first channel and the bypass channel to further realize the on-off control of the heat exchange device to control the refrigeration effect of the refrigeration device and the evaporation pressure of the evaporator includes:
if the ambient temperature is higher than a preset ambient temperature threshold value, a first gating valve in the gating valves is opened, and a second gating valve is closed, so that air flowing into the first channel through the first gating valve exchanges heat with air flowing through the second channel after cooling treatment;
and if the ambient temperature is lower than a preset ambient temperature threshold, opening a second gating valve in the gating valves and closing the first gating valve so that external air directly enters the evaporator through the bypass channel.
12. The control method as set forth in claim 9, wherein detecting a refrigerant pressure value between the compressor and the main condenser in the refrigerating apparatus, and controlling the condensing pressure and condensing temperature of the refrigerating apparatus by controlling the operation efficiency of the auxiliary condensing apparatus if the refrigerant pressure value reaches a preset pressure threshold value, comprises:
and controlling the air quantity flowing through the auxiliary condenser in the auxiliary condensing device by controlling the air quantity regulating valve group in the auxiliary condensing device.
13. The control method as set forth in claim 12, wherein said controlling the air quantity flowing through the auxiliary condenser in the auxiliary condensing unit by controlling an air quantity adjusting valve group in the auxiliary condensing unit includes:
if the refrigerant pressure value is higher than the refrigerant pressure threshold value, opening the second regulating valve and closing the third regulating valve so as to increase the air quantity flowing through the auxiliary condenser;
and if the refrigerant pressure value is lower than the refrigerant pressure threshold value, closing the second regulating valve and opening the third regulating valve so as to reduce the air quantity flowing through the auxiliary condenser.
14. The control method as set forth in claim 9, wherein the detecting the temperature and humidity of the air dehumidified by the system at the air outlet of the system, if the temperature and humidity reach a preset air outlet temperature and humidity threshold, controlling the air quantity flowing through the auxiliary condensing device and the working power of the post-heating device to make the temperature and humidity of the air dehumidified by the system meet a preset condition, includes:
if the temperature in the temperature and humidity is higher than a preset temperature and humidity threshold value of the air outlet, closing the first regulating valve so as to reduce the air quantity flowing through the auxiliary condenser and reduce the temperature of the air outlet of the system;
and if the temperature in the temperature and humidity is lower than a preset temperature and humidity threshold value of the air outlet, opening the first regulating valve so as to increase the air quantity flowing through the auxiliary condenser and improve the temperature of the air outlet of the system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610810899.2A CN107806675B (en) | 2016-09-06 | 2016-09-06 | Four-season type air-cooled dehumidification system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610810899.2A CN107806675B (en) | 2016-09-06 | 2016-09-06 | Four-season type air-cooled dehumidification system and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107806675A CN107806675A (en) | 2018-03-16 |
| CN107806675B true CN107806675B (en) | 2023-08-25 |
Family
ID=61576239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610810899.2A Active CN107806675B (en) | 2016-09-06 | 2016-09-06 | Four-season type air-cooled dehumidification system and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107806675B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708274B (en) * | 2018-12-29 | 2021-09-17 | 广东美的暖通设备有限公司 | Control method and device for low-temperature refrigerating valve |
| CN112074164B (en) * | 2020-09-14 | 2023-05-09 | 北京百度网讯科技有限公司 | Cooling device and refrigerating system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1304051B1 (en) * | 1998-12-23 | 2001-03-07 | De Longhi Spa | AIR DEHUMIDIFICATION APPARATUS |
| CN100402947C (en) * | 2006-08-22 | 2008-07-16 | 东南大学 | Thermostatic dehumidifying method and equipment |
| KR100781347B1 (en) * | 2007-03-22 | 2007-11-30 | 이관식 | Cooling device of control board with dehumidification function and controlling method using it |
| CN201434457Y (en) * | 2009-07-16 | 2010-03-31 | 上海理工大学 | Constant temperature and humidity unit with two condensers |
| CN103574793A (en) * | 2012-07-27 | 2014-02-12 | 珠海格力电器股份有限公司 | Temperature adjusting type dehumidification unit and control method thereof |
| CN202709319U (en) * | 2012-08-17 | 2013-01-30 | 连云港市动环科技有限公司 | Energy-saving air conditioning system with intelligent targeted refrigeration function |
| KR20160012795A (en) * | 2014-07-25 | 2016-02-03 | 엘지전자 주식회사 | Air conditioning system |
| CN105758160A (en) * | 2016-02-24 | 2016-07-13 | 吕智 | Heat recovery dehumidification type heat pump dryer |
| CN206176592U (en) * | 2016-09-06 | 2017-05-17 | 深圳市昊昱环保科技有限公司 | Air -cooled dehumidification system of four seasons type |
-
2016
- 2016-09-06 CN CN201610810899.2A patent/CN107806675B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107806675A (en) | 2018-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201302243Y (en) | Energy-saving full fresh air dehumidifier machine | |
| CN105805904B (en) | A kind of refrigeration control system and method for computer room | |
| CN103411278A (en) | Fresh air handling unit suitable for air conditioning system allowing independent temperature and humidity control | |
| CN103292392B (en) | A kind of multistage rotary dehumidifier with auxiliary heat extraction and using method thereof | |
| CN103776116A (en) | Evaporative cooling and traditional refrigeration combined air conditioning device and air conditioning method thereof | |
| CN202216363U (en) | Energy conservation control device of cooling water tower of central air conditioner | |
| CN107966011B (en) | Heat pump drying device and use method thereof | |
| CN104848452B (en) | Efficient data room cooling temperature and humidity regulating device | |
| KR20170070865A (en) | Reheat control system for cooling and dehumidification of thermohygrostat using energy saving type | |
| CN107806675B (en) | Four-season type air-cooled dehumidification system and control method thereof | |
| CN104566720A (en) | Precision machine room air condition compressor fluorine pump refrigerating cycle system | |
| CN112728695A (en) | Energy-saving air conditioning device capable of accurately controlling air supply temperature and humidity | |
| CN109539384A (en) | A kind of changeable air quantity fluorine pump energy saving air conditioner and its control method | |
| CN106411153B (en) | A kind of frequency conversion tank and frequency conversion tank dewing-proof method | |
| CN107816760A (en) | A kind of four seasons type water-cooled dehumidification system and its control method | |
| CN203083033U (en) | Double-cold-source dehumidification air conditioner unit | |
| CN206283419U (en) | A kind of frequency conversion tank | |
| CN103423907B (en) | Temperature and humidity adjusting system and method for air for process | |
| CN109398394B (en) | Condensate water utilizing device of air conditioner of railway vehicle | |
| CN106813332A (en) | Single cold adsorption heat recycling air-conditioner | |
| CN209459053U (en) | A kind of changeable air quantity fluorine pump energy saving air conditioner | |
| CN105135554A (en) | Pre-cooling energy-saving dehumidifying system and method | |
| CN207881022U (en) | Moisture removal adjustable type dehumidifier | |
| CN206176590U (en) | Four seasons type water -cooled dehumidification system | |
| CN206176592U (en) | Air -cooled dehumidification system of four seasons type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190505 Address after: 518000 Block 22A, Central Phase II, Yian City, Longgang District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Kaishan Haoyu Energy Saving Technology Co.,Ltd. Address before: 518000 No. 28 Pingkui Road, Pingshan New District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN HAOYU ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 518000 building e, sunshine science and Technology Park, Baolong Industrial Park, Longgang District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Kaishan Haoyu Energy Saving Technology Co.,Ltd. Address before: 518000 Block 22A, Central Phase II, Yian City, Longgang District, Shenzhen City, Guangdong Province Applicant before: Shenzhen Kaishan Haoyu Energy Saving Technology Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |