CN215176513U - Heat pump drying device - Google Patents
Heat pump drying device Download PDFInfo
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- CN215176513U CN215176513U CN202120782923.2U CN202120782923U CN215176513U CN 215176513 U CN215176513 U CN 215176513U CN 202120782923 U CN202120782923 U CN 202120782923U CN 215176513 U CN215176513 U CN 215176513U
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Abstract
The utility model discloses a heat pump drying device, wherein a first indoor heat exchange module is arranged in a baking room and comprises a first indoor heat exchanger and a first indoor fan which are correspondingly arranged and used for enabling air in the baking room to exchange heat through the first indoor heat exchanger; the outdoor heat exchange module is arranged outside the curing barn, comprises an outdoor heat exchanger and an outdoor fan, is correspondingly arranged, and is used for absorbing heat of a refrigerant; the second indoor heat exchange module comprises a total heat exchanger, a second indoor fan and a dehumidification cavity with an opening; the total heat exchanger is installed with the opening in a closed way; the second indoor heat exchanger is fixedly arranged in the dehumidification cavity and divides the dehumidification cavity into a first cavity and a second cavity; the total heat exchanger comprises a first channel and a second channel which are respectively communicated with the first cavity, the second cavity and the curing barn; the second indoor fan is arranged corresponding to the first channel or the second channel and used for enabling air in the curing barn to flow along the direction or the opposite direction of the first channel, the second indoor heat exchanger and the second channel, and therefore the dehumidifying efficiency is improved.
Description
Technical Field
The utility model relates to a material drying equipment technical field especially relates to a heat pump drying device.
Background
Drying is an important process in the tobacco production process, and generally, a mode of heating air is adopted to vaporize moisture in materials and separate the moisture from the materials, and then the moisture is discharged from a curing barn, so that the aim of drying the materials is fulfilled.
At present, in order to save energy and improve efficiency, a heat pump is mostly adopted to provide heat for a curing barn, and in order to ensure drying quality, the temperature and the humidity in the curing barn need to be controlled in real time.
The existing heat pump of the curing barn comprises an open type dryer, a closed type dryer and a combined opening and closing dryer. The open type dryer can not realize internal moisture removal, and only can discharge high-temperature and high-humidity air in the curing barn and simultaneously introduce fresh air again; the discharged high-temperature and high-humidity air carries a large amount of heat, so that energy waste is caused. The closed dryer only heats the curing barn through the heat energy conversion efficiency of the compressor, and the heating speed is slow. The opening-closing combined dryer solves the problems that the temperature rise is slow in the early stage of drying and the energy is saved by dehumidifying in the middle stage of drying, but when the humidity is required to be discharged in the middle stage of material drying by using the opening-closing combined dryer, the problems that the heat is large and the condensation efficiency is low due to the fact that high-temperature high-humidity air is directly contacted with an indoor evaporator exist.
Disclosure of Invention
For the not high problem of dewfall efficiency who exists when using the switching to combine the drying-machine dehumidification among the solution prior art, the utility model provides a heat pump drying device divides the temperature of two steps of interior humid air of reduction baking house, makes humid air reach the dewfall temperature more easily, improves dewfall efficiency to improve hydrofuge efficiency.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a heat pump drying device, which comprises a first indoor heat exchange module, an outdoor heat exchange module and a second indoor heat exchange module;
the first indoor heat exchange module comprises a first indoor heat exchanger and a first indoor fan which are arranged in the curing barn; the first indoor fan is arranged corresponding to the first indoor heat exchanger and used for enabling air in the curing barn to exchange heat through the first indoor heat exchanger;
the outdoor heat exchange module comprises an outdoor heat exchanger and an outdoor fan which are arranged outside the curing barn; the outdoor fan is arranged corresponding to the outdoor heat exchanger and used for enabling air outside the curing barn to exchange heat through the outdoor heat exchanger;
the second indoor heat exchange module comprises a total heat exchanger, a second indoor fan and a dehumidification cavity with an opening; the total heat exchanger is installed with the opening in a closed mode; the second indoor heat exchanger is fixedly arranged in the dehumidification cavity and divides the dehumidification cavity into a first cavity and a second cavity; the total heat exchanger comprises a first channel and a second channel which are respectively communicated with the first cavity and the curing barn, and the second cavity and the curing barn; the second indoor fan is arranged corresponding to the first channel or the second channel and used for enabling air in the curing barn to flow along the direction or the opposite direction of the first channel, the second indoor heat exchanger and the second channel.
In one embodiment, the baking room further comprises a heating cavity which is arranged in the baking room and comprises an indoor air inlet and an indoor air outlet; the first indoor heat exchanger is arranged in the heating cavity and divides the heating cavity into a third cavity and a fourth cavity;
the indoor air inlet is communicated with the third cavity and the curing barn; the indoor air outlet is communicated with the fourth cavity and the curing barn; the first indoor fan is arranged at the indoor air outlet;
the first channel and the second channel are respectively communicated with the third cavity and the second cavity, and the third cavity and the first cavity.
In one embodiment, the baking room further comprises an evaporation cavity, wherein the evaporation cavity is arranged outside the baking room and comprises an outdoor air inlet and an outdoor air outlet; the outdoor heat exchanger is fixedly arranged in the evaporation cavity and divides the evaporation cavity into a fifth cavity and a sixth cavity; the outdoor air inlet is communicated with the fifth cavity and the outdoor space, and the outdoor air outlet is communicated with the sixth cavity and the outdoor space; the outdoor fan is arranged at the outdoor air outlet.
In one embodiment, a third channel for communicating the first channel with the curing barn is arranged outside one end of the first channel in the curing barn, one end of the third channel is connected with the first channel, and the other end of the third channel is connected with the second indoor fan.
In some embodiments, the system further comprises a compressor, a first solenoid valve and a second solenoid valve;
the compressor comprises an air inlet and an liquid outlet;
one end of the first indoor heat exchanger is connected with the liquid outlet; the other end of the first electromagnetic valve is connected with the first electromagnetic valve and the second electromagnetic valve respectively;
one end of the second indoor heat exchanger is connected with the first electromagnetic valve; one end of the outdoor heat exchanger is connected with the second electromagnetic valve; the other end of the second indoor heat exchanger and the other end of the outdoor heat exchanger are respectively connected with the air inlet.
In some embodiments, the device further comprises a four-way valve comprising a first port, a second port, a third port, and a fourth port; the first port may be in communication with the second port or the fourth port; the third port may be in communication with the fourth port or the second port;
the first port is connected with the liquid outlet; the second port is connected with the other end of the outdoor heat exchanger; the third port is connected with the other end of the second indoor heat exchanger; the fourth port is connected with one end of the first indoor heat exchanger.
In some embodiments, further comprising a controller, a dry bulb temperature sensor, a wet bulb temperature sensor; the dry bulb temperature sensor and the wet bulb temperature sensor are arranged in the curing barn, are respectively connected with the controller, and are used for detecting the dry bulb temperature and the wet bulb temperature in the curing barn and transmitting the dry bulb temperature and the wet bulb temperature to the controller;
the first indoor fan, the second indoor fan, the outdoor fan, the compressor, the first electromagnetic valve, the second electromagnetic valve and the four-way valve are respectively connected with the controller; the controller controls the first indoor fan, the second indoor fan, the outdoor fan, the compressor, the first electromagnetic valve, the second electromagnetic valve and the four-way valve to act according to the received dry bulb temperature and the wet bulb temperature.
In some embodiments, the air conditioner further comprises a throttling component, the throttling component is arranged between the first indoor heat exchanger and the first electromagnetic valve and the second electromagnetic valve, one end of the throttling component is connected with the first indoor heat exchanger, and the other end of the throttling component is connected with the first electromagnetic valve and the second electromagnetic valve.
In some embodiments, the throttling component is an electronic expansion valve, which is connected to and controlled by the controller.
In some embodiments, further comprising a gas-liquid separator comprising an inlet, an outlet; the inlet is connected with the other end of the second indoor heat exchanger; the outlet is connected with the air inlet.
The technical scheme of the utility model prior art relatively has following technological effect:
the utility model discloses a heat pump drying device realizes the stoving mode that the switching combines through setting up first indoor heat exchanger, second indoor heat exchanger, outdoor heat exchanger in roast room. The first indoor heat exchanger and the outdoor heat exchanger form a refrigerant circulating system, so that the temperature in the baking room is increased to be quickly raised; the second indoor heat exchanger and the outdoor heat exchanger form a refrigerant circulating system to dehumidify the high-humidity air in the baking room, so that energy is saved; the first channel and the second channel of the total heat exchanger and the indoor second heat exchanger form a dehumidification module; the high-temperature and high-humidity air flowing into the curing barn through the first channel and the low-temperature and low-humidity air which flows out through the second channel and is dehumidified by the second indoor heat exchanger in the dehumidifying cavity are subjected to total heat exchange; the high-temperature high-humidity gas in the curing barn is firstly subjected to heat exchange with the low-temperature air flowing out of the dehumidification cavity through the total heat exchanger, the air to be in the dehumidification cavity is preliminarily cooled, and then the air is cooled, condensed and dehumidified through the second indoor heat exchanger. The air primarily cooled by the total heat exchanger is cooled and condensed by the second indoor heat exchanger, so that the condensation difficulty is reduced, the condensation rate and the condensation efficiency are improved, and the dehumidification efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a heat pump drying device provided by the present invention;
fig. 2 is a schematic diagram of a refrigerant system of an embodiment of a heat pump drying device provided in the present invention;
fig. 3 is a schematic view of a refrigerant system of another embodiment of the heat pump drying apparatus provided by the present invention.
Reference numerals:
1. a first indoor heat exchange module; 2. an outdoor heat exchange module; 3. a second indoor heat exchange module; 4. a curing barn; 5. a compressor; 6. a first solenoid valve; 7. a second solenoid valve; 8. a four-way valve; 9. a gas-liquid separator; 10. a throttling member; 11. a first indoor heat exchanger; 12. a first indoor fan; 13. a heating cavity; 21. an outdoor heat exchanger; 22. an outdoor fan; 23. an evaporation chamber; 31. a total heat exchanger; 32. a second indoor heat exchanger; 33. a dehumidification chamber; 34. a second indoor fan; 35. a third channel; 51. an air inlet; 52. a liquid outlet; 81. a first port; 82. a second port; 83. a third port; 84. a fourth port; 91. an inlet; 92. an outlet; 131. a third chamber; 132. a fourth chamber; 133. an indoor air inlet; 134. an indoor air outlet; 231. a fifth chamber; 232. a sixth chamber; 233. an outdoor air inlet; 234. an outdoor air outlet; 311. a first channel; 312. a second channel; 331. a first chamber; 332. a second chamber; 333. and (4) opening.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
Referring to fig. 1, 2 and 3, a heat pump drying device of the present invention includes a first indoor heat exchange module 1, an outdoor heat exchange module 2, and a second indoor heat exchange module 3; the first indoor heat exchange module 1 is arranged in the baking room 4; the second indoor heat exchange module 3 is arranged in the baking room 4 or is communicated with the air in the baking room 4; the outdoor heat exchange module 2 is arranged outside the baking room 4; the first indoor heat exchange module 1 and/or the second indoor heat exchange module 3 and the outdoor heat exchange module 2 form a refrigerant circulating system respectively, and the functions of quickly heating, dehumidifying, cooling, dehumidifying and the like are realized on the air in the curing barn 4 at different stages of material drying.
The first indoor heat exchange module 1 comprises a first indoor heat exchanger 11 and a first indoor fan 12; first indoor fan 12 corresponds first indoor heat exchanger 11 setting for make the air circulation in roast room 4 carry out the heat transfer through first indoor heat exchanger 11.
The outdoor heat exchange module 2 comprises an outdoor heat exchanger 21 and an outdoor fan 22; the outdoor fan 22 is disposed corresponding to the outdoor heat exchanger 21, and is configured to circulate outdoor air through the outdoor heat exchanger 21 for heat exchange.
The second indoor heat exchange module 3 comprises a total heat exchanger 31, a second indoor heat exchanger 32, a second indoor fan 34 and a dehumidification cavity 33 with an opening 333; the total heat exchanger 31 includes a first passage 311 and a second passage 312, which are disposed to cross each other so that air passing through the first passage 311 can exchange heat with air passing through the second passage 312; the total heat exchanger 31 is connected to the opening 333 so that the dehumidifying chamber 33 can communicate with the environment inside the curing barn 4 only through the first passage 311 and the second passage 312 of the total heat exchanger 31.
The second indoor heat exchanger 32 is disposed in the dehumidification chamber 33, and divides the dehumidification chamber 33 into a first chamber 331 and a second chamber 332; the first passage 311 communicates the first cavity 331 with the environment inside the baking chamber 4; the second passage 312 communicates the second chamber with the environment inside the baking chamber 4.
The second indoor fan 34 is disposed corresponding to the first channel 311 or the second channel 312, so that the air in the curing barn 4 circulates along the direction of the path of the first channel 311, the second cavity 332, the second indoor heat exchanger 32, the first cavity 331 and the second channel 312, or circulates along the direction opposite to the above path, so that the air in the curing barn 4 exchanges heat with the air condensed and dehumidified by the second indoor heat exchanger 32 and returned to the curing barn 4 through the second channel 312 or the first channel 311 when passing through the first channel 311 or the second channel 312, and the air passing through the first channel 311 or the second channel 312 is primarily cooled, so that the temperature is more easily reduced to the dew point temperature when reaching the second indoor heat exchanger 32, the difficulty of condensing and dehumidifying the high-temperature and high-humidity air in the curing barn 4 is reduced, the efficiency of condensing the high-temperature and high-humidity air is improved, the dehumidification efficiency of the air in the curing barn 4 is improved, and the drying time is shortened, the energy is saved.
The structure and principle of the heat pump drying device of the present invention will be described in detail below by specific embodiments.
In one embodiment, referring to fig. 1, a third channel 35 is disposed outside one end of the first channel 311 located in the curing barn 4, and is used for communicating the first channel 311 with the environment in the curing barn 4, one end of the third channel is connected to the first channel 311, and the other end of the third channel is connected to the second indoor fan 34, so that air in the curing barn 4 enters the first channel 311 from the third channel 35 to the dehumidification cavity 33 for dehumidification.
The present embodiment improves the pressure and speed of the air blown into the dehumidifying chamber 33 by the third channel 35, and improves the dehumidifying efficiency.
In one embodiment, referring to fig. 1, the heat pump drying apparatus further includes a heating chamber 13 disposed in the curing barn 4, and including an indoor air inlet 133 and an indoor air outlet 134; the first indoor heat exchanger 11 is fixedly arranged in the heating cavity 13 and is positioned between the indoor air inlet 133 and the indoor air outlet 134, so that the heating cavity 13 is divided into a third cavity 131 and a fourth cavity 132; the indoor air inlet 133 is communicated with the third cavity 131 and the internal environment of the curing barn 4; the indoor air outlet 134 is communicated with the fourth cavity 132 and the environment in the baking room 4; the first indoor fan 12 is disposed in the indoor air outlet 134.
Preferably, the heating cavity 13 is integrally disposed with the dehumidifying cavity 33, and the first passage 311 and the second passage 312 respectively communicate the third cavity 131 with the second cavity 332 and the third cavity 131 with the first cavity 331.
The heat pump drying device of the embodiment is compact in structure, and the air in the baking room 4 is heated in the heating cavity 13 by the first indoor heat exchanger 11 of the main heating part, so that the air in the baking room 4 is circulated, and the heat exchange efficiency is improved.
In an embodiment, referring to fig. 1, the heat pump drying device further includes an evaporation chamber 23, which is disposed outside the curing barn 4 and includes an outdoor air inlet 233 and an outdoor air outlet 234; the outdoor heat exchanger 21 is fixedly arranged in the evaporation cavity 23 and between the outdoor air inlet 233 and the outdoor air outlet 234, and divides the evaporation cavity 23 into a fifth cavity 231 and a sixth cavity 232; the outdoor air inlet 233 is communicated with the fifth cavity 231 and the outdoor air outlet 234 is communicated with the sixth cavity 232 and the outdoor; the outdoor fan 22 is disposed at the outdoor outlet 234.
In this embodiment, the evaporation cavity 23 and the outdoor fan 22 are disposed at the outdoor air outlet 234, so that the outdoor air has a certain pressure and speed when circulating through the outdoor heat exchanger 21, thereby improving the heat exchange efficiency of the outdoor heat exchanger 21.
In some embodiments, referring to fig. 1 and 2, the heat pump drying device further includes a compressor 5, a first electromagnetic valve 6, a second electromagnetic valve 7, and a throttling component 10.
The compressor 5 comprises an air inlet 51 and an liquid outlet 52; one end of the first indoor heat exchanger 11 is connected with the liquid outlet 52; the other end is respectively connected with a first electromagnetic valve 6 and a second electromagnetic valve 7; one end of the second indoor heat exchanger 32 is connected with the first electromagnetic valve 6, so that the other end of the first indoor heat exchanger 11 is communicated with one end of the second indoor heat exchanger 32 through the first electromagnetic valve 6; one end of the outdoor heat exchanger 21 is connected with the second electromagnetic valve 7, so that the other end of the first indoor heat exchanger 11 is communicated with one end of the outdoor heat exchanger 21 through the second electromagnetic valve 7; the other end of the second indoor heat exchanger 32 and the other end of the outdoor heat exchanger 21 are connected to the air inlet 51, respectively.
The throttle member 10 is provided between the other end of the first indoor heat exchanger 11 and the first and second electromagnetic valves 6 and 7, and communicates the other end of the first indoor heat exchanger 11 with the first and second electromagnetic valves 6 and 7.
In this embodiment, a first indoor heat exchanger 11, a throttling part 10, a first electromagnetic valve 6, a second indoor heat exchanger 32, a first refrigerant circulation system of a compressor 5, a first indoor heat exchanger 11, a throttling part 10, a second electromagnetic valve 7, an outdoor heat exchanger 21, and a second refrigerant circulation system of the compressor 5 are formed; the first indoor heat exchanger 11 in the first refrigerant circulating system is a condenser, and the second indoor heat exchanger 32 is an evaporator; the first indoor heat exchanger 11 in the second refrigerant cycle system is a condenser, and the outdoor heat exchanger 21 is an evaporator. The first refrigerant circulating system and the second refrigerant circulating system can operate simultaneously and independently; the first refrigerant circulating system operates independently to slowly heat and dehumidify air in the baking room 4, and is suitable for the middle stage of material drying; when the second refrigerant circulating system operates alone, air in the baking room 4 is heated rapidly, and the air heating system is suitable for the earlier stage of material drying.
The embodiment meets the requirements of different periods of material drying operation, and improves the drying efficiency and the drying quality.
In some embodiments, referring to fig. 1 and 2, the heat pump drying device further includes a controller, a dry bulb temperature sensor, and a wet bulb temperature sensor; the dry bulb temperature sensor and the wet bulb temperature sensor are respectively arranged in the curing barn 4, are respectively connected with the controller, are used for detecting the dry bulb temperature and the wet bulb temperature in the curing barn 4, and transmit the dry bulb temperature and the wet bulb temperature to the controller.
The controller is respectively electrically connected with the compressor 5, the first indoor fan 12, the second indoor fan 34, the outdoor fan 22, the first electromagnetic valve 6 and the second electromagnetic valve 7, is configured with a dry bulb set temperature and a wet bulb set temperature, is configured to compare the dry bulb temperature with the dry bulb set temperature and the wet bulb temperature with the wet bulb set temperature, and controls the compressor 5, the first indoor fan 12, the second indoor fan 34, the outdoor fan 22, the first electromagnetic valve 6 and the second electromagnetic valve 7 to act or operate according to a comparison result so as to enable the first refrigerant circulation system and/or the second refrigerant circulation system to operate.
In some embodiments, referring to fig. 1 and 3, the heat pump drying apparatus further includes a four-way valve 8 including a first port 81, a second port 82, a third port 83, and a fourth port 84; the first port 81 may be in communication with the second port 82 or the fourth port 84; the third port 83 may be in communication with the fourth port 84 or the second port 82.
The first port 81 is connected to the liquid outlet 52; the second port 82 is connected to the other end of the outdoor heat exchanger 21; the third port 83 is connected to the intake port 51; the fourth port 84 is connected to one end of the first indoor heat exchanger 11.
The controller is also configured with a preset dry-bulb difference value; the four-way valve 8 is connected with a controller; the controller controls the first indoor fan 12, the second indoor fan 34, the outdoor fan 22, the compressor 5, the first electromagnetic valve 6, the second electromagnetic valve 7 and the four-way valve 8 to operate or stop operating, operating or stopping operating according to the received dry bulb temperature, wet bulb temperature, preset dry bulb set temperature, preset wet bulb set temperature and preset dry bulb difference value.
The heat pump drying device of the embodiment comprises four working modes, namely a rapid heating mode, a heating dehumidification mode, a slow heating dehumidification mode and a dehumidification cooling mode.
When the material is dried earlier stage, need heat up the temperature to the air rapid heating in roast room 4, reach the temperature of moisture evaporation in the material, operation rapid heating up mode shortens drying cycle, improves drying efficiency and oven-dry mass.
And in the rapid heating mode, the dry bulb temperature is lower than the dry bulb set temperature, and the wet bulb temperature is lower than or equal to the wet bulb set temperature. The first port 81 of the four-way valve 8 is communicated with the fourth port 84, the second port 82 is communicated with the third port 83, namely the four-way valve 8 is ON; the first solenoid valve 6 is closed; the second solenoid valve 7 is opened; the first indoor fan 12 and the outdoor fan 22 are started; the second indoor fan 34 is stopped and the first refrigerant cycle system having the first indoor heat exchanger 11 as a condenser and the outdoor heat exchanger 21 as an evaporator is operated.
When the materials are dried in the middle and early stages, the temperature of the dry balls is less than the set temperature of the dry balls minus the difference value of the preset dry balls, and the temperature of the wet balls is greater than the set temperature of the wet balls. The high-temperature and high-humidity gas in the examination room needs to be preliminarily dehumidified, the air in the baking room 4 needs to be rapidly heated, the heating and dehumidifying mode is operated, the drying period is shortened, the drying efficiency is improved, and the drying quality is improved.
In the temperature-increasing dehumidification mode, the first port 81 and the fourth port 84 of the four-way valve 8 are communicated, and the second port 82 and the third port 83 are communicated, that is, the four-way valve 8 is ON; the first solenoid valve 6 is opened; the second solenoid valve 7 is opened; the first indoor fan, the outdoor fan 22, and the second indoor fan 34 are started. The first refrigerant circulation system using the first indoor heat exchanger 11 as a condenser and the second indoor heat exchanger 32, and the second refrigerant circulation system using the first indoor heat exchanger 11 as a condenser and the outdoor heat exchanger 21 as an evaporator are operated.
And when the material is in the middle drying period, the dry-bulb temperature is lower than the dry-bulb set temperature, and the wet-bulb temperature is higher than the wet-bulb set temperature. The high-temperature high-humidity gas in the curing barn 4 needs to be dehumidified, the air temperature in the curing barn 4 needs to be kept, namely, the air in the curing barn 4 needs to be slightly heated, a slow heating and dehumidifying mode needs to be operated, the drying period is shortened, the drying efficiency is improved, and the drying quality is improved.
In the slow temperature-raising dehumidification mode, the first port 81 and the fourth port 84 of the four-way valve 8 are communicated, and the second port 82 and the third port 83 are communicated, that is, the four-way valve 8 is ON; the first solenoid valve 6 is opened; the second solenoid valve 7 is closed; the first indoor fan 12 and the second indoor fan 34 are started; the outdoor fan 22 is stopped. The first refrigerant cycle system is operated with the first indoor heat exchanger 11 as a condenser and the second indoor heat exchanger 32 as an evaporator. The energy conversion efficiency by the compressor 5 is the heating of the air in the curing barn 4 and the dehumidification by the second indoor heat exchanger 32.
When the materials are dried in the middle and later periods, the temperature of the dry balls is more than or equal to the set temperature of the dry balls, and the temperature of the wet balls is more than the set temperature of the wet balls. The high-temperature and high-humidity gas in the examination room needs to be dehumidified, the air temperature in the baking room 4 needs to be reduced, and even if the air in the baking room 4 is cooled, a cooling and dehumidifying mode needs to be operated, so that the drying period is shortened, the drying efficiency is improved, and the drying quality is improved.
In the cooling and dehumidifying mode, the first port 81 and the second port 82 of the four-way valve 8 are communicated, and the third port 83 and the fourth port 84 of the four-way valve 8 are communicated, that is, the four-way valve 8 is OFF; the first solenoid valve 6 is closed; the second solenoid valve 7 is opened; the first indoor fan 12 and the outdoor fan 22 are started; the second indoor fan 34 is stopped. A refrigerant cycle system in which the first indoor heat exchanger 11 is an evaporator and the outdoor heat exchanger 21 is a condenser is operated. The cooling speed of the air in the curing barn 4 is improved, the humidity in the curing barn 4 is reduced, and the drying efficiency and the drying quality are improved.
Preferably, the throttling element 10 is an electronic expansion valve, which is connected to and controlled by a controller. When in the cooling and dehumidifying mode, the first port 81 and the second port 82 of the four-way valve 8 are communicated, and the third port 83 and the fourth port 84 are communicated, that is, the four-way valve 8 is OFF; and the first electromagnetic valve 6 can be opened; the second solenoid valve 7 is opened; closing the electronic expansion valve; the second indoor fan 34 and the outdoor fan 22 are started; the first indoor fan 12 is stopped. The refrigerant cycle system in which the second indoor heat exchanger 32 is an evaporator and the outdoor heat exchanger 21 is a condenser is operated. The cooling speed of the air in the curing barn 4 is improved, the humidity in the curing barn 4 is reduced, and the drying efficiency and the drying quality are improved.
Preferably, the device also comprises a gas-liquid separator 9 which comprises an inlet 91 and an outlet 92; the inlet 91 is connected to the other end of the second indoor heat exchanger 32; the outlet 92 is connected to the air inlet 51.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A heat pump drying device is characterized by comprising:
the first indoor heat exchange module comprises a first indoor heat exchanger and a first indoor fan which are arranged in the curing barn; the first indoor fan is arranged corresponding to the first indoor heat exchanger and used for enabling air in the curing barn to exchange heat through the first indoor heat exchanger;
the outdoor heat exchange module comprises an outdoor heat exchanger and an outdoor fan which are arranged outside the curing barn; the outdoor fan is arranged corresponding to the outdoor heat exchanger and used for enabling air outside the curing barn to exchange heat through the outdoor heat exchanger;
the second indoor heat exchange module comprises a total heat exchanger, a second indoor fan and a dehumidification cavity with an opening; the total heat exchanger is installed with the opening in a closed mode; the second indoor heat exchanger is fixedly arranged in the dehumidification cavity and divides the dehumidification cavity into a first cavity and a second cavity; the total heat exchanger comprises a first channel and a second channel which are respectively communicated with the first cavity and the curing barn, and the second cavity and the curing barn; the second indoor fan is arranged corresponding to the first channel or the second channel and used for enabling air in the curing barn to flow along the direction or the opposite direction of the first channel, the second indoor heat exchanger and the second channel.
2. The heat pump drying device according to claim 1, further comprising a heating chamber disposed in the baking room, including an indoor air inlet and an indoor air outlet; the first indoor heat exchanger is arranged in the heating cavity and divides the heating cavity into a third cavity and a fourth cavity;
the indoor air inlet is communicated with the third cavity and the curing barn; the indoor air outlet is communicated with the fourth cavity and the curing barn; the first indoor fan is arranged at the indoor air outlet;
the first channel and the second channel are respectively communicated with the third cavity and the second cavity, and the third cavity and the first cavity.
3. The heat pump drying device according to claim 2, further comprising an evaporation chamber, disposed outside the curing barn, including an outdoor air inlet and an outdoor air outlet; the outdoor heat exchanger is fixedly arranged in the evaporation cavity and divides the evaporation cavity into a fifth cavity and a sixth cavity; the outdoor air inlet is communicated with the fifth cavity and the outdoor space, and the outdoor air outlet is communicated with the sixth cavity and the outdoor space; the outdoor fan is arranged at the outdoor air outlet.
4. The heat pump drying device according to claim 1, wherein a third channel is provided outside an end of the first channel located in the baking room, and the third channel communicates the first channel with the baking room, and has one end connected to the first channel and the other end connected to the second indoor fan.
5. The heat pump drying device according to any one of claims 1 to 4, further comprising a compressor, a first solenoid valve, a second solenoid valve;
the compressor comprises an air inlet and an liquid outlet;
one end of the first indoor heat exchanger is connected with the liquid outlet; the other end of the first electromagnetic valve is connected with the first electromagnetic valve and the second electromagnetic valve respectively;
one end of the second indoor heat exchanger is connected with the first electromagnetic valve; one end of the outdoor heat exchanger is connected with the second electromagnetic valve; the other end of the second indoor heat exchanger and the other end of the outdoor heat exchanger are respectively connected with the air inlet.
6. The heat pump drying device of claim 5, further comprising a four-way valve including a first port, a second port, a third port, a fourth port; the first port may be in communication with the second port or the fourth port; the third port may be in communication with the fourth port or the second port;
the first port is connected with the liquid outlet; the second port is connected with the other end of the outdoor heat exchanger; the third port is connected with the other end of the second indoor heat exchanger; the fourth port is connected with one end of the first indoor heat exchanger.
7. The heat pump drying device of claim 6, further comprising a controller, a dry bulb temperature sensor, a wet bulb temperature sensor; the dry bulb temperature sensor and the wet bulb temperature sensor are arranged in the curing barn, are respectively connected with the controller, and are used for detecting the dry bulb temperature and the wet bulb temperature in the curing barn and transmitting the dry bulb temperature and the wet bulb temperature to the controller;
the first indoor fan, the second indoor fan, the outdoor fan, the compressor, the first electromagnetic valve, the second electromagnetic valve and the four-way valve are respectively connected with the controller; the controller controls the first indoor fan, the second indoor fan, the outdoor fan, the compressor, the first electromagnetic valve, the second electromagnetic valve and the four-way valve to act according to the received dry bulb temperature and the wet bulb temperature.
8. The heat pump drying device according to claim 7, further comprising a throttling member disposed between the first indoor heat exchanger and the first and second solenoid valves, one end of the throttling member being connected to the first indoor heat exchanger, and the other end thereof being connected to the first and second solenoid valves.
9. The heat pump drying device of claim 8, wherein the throttling component is an electronic expansion valve, and the electronic expansion valve is connected with the controller and is controlled by the controller.
10. The heat pump drying device of claim 5, further comprising a gas-liquid separator comprising an inlet, an outlet; the inlet is connected with the other end of the second indoor heat exchanger; the outlet is connected with the air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120782923.2U CN215176513U (en) | 2021-04-16 | 2021-04-16 | Heat pump drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120782923.2U CN215176513U (en) | 2021-04-16 | 2021-04-16 | Heat pump drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215176513U true CN215176513U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120782923.2U Active CN215176513U (en) | 2021-04-16 | 2021-04-16 | Heat pump drying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215176513U (en) |
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2021
- 2021-04-16 CN CN202120782923.2U patent/CN215176513U/en active Active
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