CN212274576U - Heat pump drying system - Google Patents
Heat pump drying system Download PDFInfo
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- CN212274576U CN212274576U CN202021922530.9U CN202021922530U CN212274576U CN 212274576 U CN212274576 U CN 212274576U CN 202021922530 U CN202021922530 U CN 202021922530U CN 212274576 U CN212274576 U CN 212274576U
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Abstract
The embodiment of the utility model provides a heat pump drying system relates to the heat pump field of drying. The heat pump drying system comprises a return air duct, an air supply duct, a bypass air duct, a first compressor, a first heat exchanger, a first throttling device, a second heat exchanger and a first fan; an exhaust port of the first compressor is connected with an inlet of the first heat exchanger, an outlet of the first heat exchanger is connected with one end of the first throttling device, the other end of the first throttling device is connected with an inlet of the second heat exchanger, and an outlet of the second heat exchanger is connected with an air suction port of the first compressor; the first fan is used for enabling a first part of air in the return air duct to enter the air supply duct after exchanging heat with the second heat exchanger and exchanging heat with the first heat exchanger; the first fan is also used for enabling a second part of air in the return air duct to enter the air supply duct through the bypass duct and exchange heat with the first heat exchanger. The embodiment of the utility model provides a can reach higher air-out temperature under the lower condition of condensing temperature.
Description
Technical Field
The utility model relates to a heat pump stoving field particularly, relates to a heat pump drying system.
Background
The space that conventional dehumidification type heat pump drying system was handled passes through behind the evaporimeter, in order to improve the dehumidification volume, often can reduce the amount of wind, passes through the condenser again, can lead to the big flow rate of difference in temperature of the air that is handled little for condensing temperature is very high, thereby refrigeration cycle's inefficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a heat pump drying system, it can reach higher air-out temperature under the lower condition of condensing temperature to promote refrigeration cycle's efficiency.
The embodiment of the utility model provides a heat pump drying system, including return air wind channel, air supply wind channel, bypass wind channel, first compressor, first heat exchanger, first throttling arrangement, second heat exchanger and first fan; the exhaust port of the first compressor is connected with the inlet of the first heat exchanger, the outlet of the first heat exchanger is connected with one end of the first throttling device, the other end of the first throttling device is connected with the inlet of the second heat exchanger, and the outlet of the second heat exchanger is connected with the air suction port of the first compressor; the first fan is arranged on the return air duct or the air supply duct, the first heat exchanger is arranged on the air supply duct, and the second heat exchanger is arranged on the air supply duct or the return air duct; the first fan is used for enabling a first part of air in the return air duct to enter the air supply duct after exchanging heat with the second heat exchanger and exchanging heat with the first heat exchanger; the bypass air duct is communicated with the return air duct and the air supply duct, and the first fan is also used for enabling a second part of air in the return air duct to enter the air supply duct through the bypass air duct and exchange heat with the first heat exchanger.
In an optional implementation manner, the heat pump drying system further includes a first water pan and a first drain pipe, the first water pan is installed below the second heat exchanger, and the first drain pipe is connected to the first water pan and is used for draining water in the first water pan to the outside of the air supply duct, the return air duct and the bypass air duct.
In an optional embodiment, the heat pump drying system further includes an air valve, and the air valve is mounted in the bypass air duct and is used for adjusting the air volume of the bypass air duct.
In an optional embodiment, the heat pump drying system further includes a third heat exchanger, where the third heat exchanger has a first heat exchange portion and a second heat exchange portion, the first heat exchange portion is connected to the second heat exchange portion through a pipeline, and the second heat exchange portion is higher than the first heat exchange portion, so that the first portion of air sequentially passes through the first heat exchange portion, the second heat exchanger, and the second heat exchange portion.
In an optional embodiment, the heat pump drying system further includes a fourth heat exchanger, and the fourth heat exchanger is disposed upstream of the second heat exchanger, so that the first portion of air passes through the fourth heat exchanger, the second heat exchanger, and the first heat exchanger in sequence.
In an optional implementation manner, the heat pump drying system further includes a first water pan and a first drain pipe, the first water pan is installed below the second heat exchanger and the fourth heat exchanger, the first drain pipe is connected to the first water pan and connected to an inlet of the fourth heat exchanger, the first drain pipe is used for draining water in the first water pan to an inlet of the fourth heat exchanger, and an outlet of the fourth heat exchanger is used for draining water to the outside of the drying area.
In an optional embodiment, the heat pump drying system further includes a second compressor, a second fan, a second throttling device, a fourth heat exchanger and a fifth heat exchanger, wherein the fourth heat exchanger is located upstream of the second heat exchanger, and the fifth heat exchanger is located outside the return air duct and the supply air duct; the second compressor is connected with the fourth heat exchanger, the fourth heat exchanger is connected with the second throttling device, the second throttling device is connected with the fifth heat exchanger, the fifth heat exchanger is connected with the second compressor, and the second fan is used for exchanging heat with the fifth heat exchanger.
In an optional implementation manner, the heat pump drying system further includes a first water pan and a first drain pipe, the first water pan is disposed below the second heat exchanger and the fourth heat exchanger, and the first drain pipe is connected to the first water pan and is used for draining and spraying water in the first water pan to the outer surface of the fifth heat exchanger.
In an optional embodiment, the heat pump drying system further includes a sixth heat exchanger and a third fan, the sixth heat exchanger is located outside the air duct, and is respectively connected to the first heat exchanger and the first compressor, and is configured to exchange heat with a refrigerant, and the third fan is configured to exchange heat with the sixth heat exchanger.
In an optional implementation manner, the heat pump drying system further includes a first water pan and a first drain pipe, the first water pan is disposed below the second heat exchanger, and the first drain pipe is connected to the first water pan and connected to the sixth heat exchanger, and is configured to drain water in the first water pan to an outer surface of the sixth heat exchanger.
In an optional embodiment, the heat pump drying system further includes a seventh heat exchanger, and the seventh heat exchanger is located outside the air duct, and is connected to the first heat exchanger and the first throttling device, respectively, and configured to exchange heat with a refrigerant.
In an optional embodiment, the heat pump drying system further includes a first water pump, a second water pan, a second drain pipe, a fourth fan, an eighth heat exchanger and a water spreading device, wherein the eighth heat exchanger is located outside the air duct, and is respectively connected to the first heat exchanger and the first throttling device, and is used for exchanging heat with the refrigerant; the second water drain pipe is connected with the second water pan, the first water pump is mounted on the second water pan, the water sowing device is connected with the second water drain pipe, the first water pump is used for enabling water in the second water pan to sequentially pass through the second water drain pipe and the water sowing device and spraying the water to the outer surface of the eighth heat exchanger through the water sowing device, and the fourth fan is used for exchanging heat with the eighth heat exchanger; the heat pump drying system further comprises a first water pan and a first water drainage pipe, the first water pan is arranged below the second heat exchanger, and the first water drainage pipe is connected with the first water pan and used for draining water in the first water pan to a drain pipe in front of the second water pan or the first water pump.
In an optional embodiment, the heat pump drying system further includes a fourth heat exchanger, the fourth heat exchanger is disposed at an upstream of the second heat exchanger, the first water pan is disposed below the second heat exchanger and the fourth heat exchanger, two ends of the fourth heat exchanger are connected to the second drain pipe through a pipeline, and the first water pump is further configured to enable water in the second water pan to flow through the fourth heat exchanger.
In an optional embodiment, the heat pump drying system further includes a first valve, the first valve is disposed in the second drain pipe, two ends of the fourth heat exchanger are respectively connected to the second drain pipe and have two connection positions, and the first valve is located between the two connection positions.
In an optional embodiment, the heat pump drying system further comprises a first water pan, a first drain pipe, a second water pump, a third water pan, a third drain pipe, a fourth heat exchanger, a fifth fan, a ninth heat exchanger and a water spreading device; the fourth heat exchanger is positioned at the upstream of the second heat exchanger, and two ends of the fourth heat exchanger are respectively connected with two ends of the ninth heat exchanger; the first water pan is located below the second heat exchanger and the fourth heat exchanger, the third water pan is located below the ninth heat exchanger, the first drain pipe is connected with the first water pan and used for draining water in the first water pan to the third water pan, the third drain pipe is connected with the third water pan and connected with the water sowing device, and the second water pump is installed on the third water pan and used for spraying water in the third water pan to the outer surface of the ninth heat exchanger through the third drain pipe and the water sowing device.
The embodiment of the utility model provides a heat pump drying system: the heat pump drying system is provided with the bypass air channel between the return air channel and the air supply air channel, and partial air in the return air can directly enter the air supply air channel from the bypass air channel without passing through the second heat exchanger. Under some application conditions, through for more, moisture condenses out from the air that flows through the second heat exchanger surface for more efficient, often can adopt lower amount of wind to flow through the second heat exchanger, and the air of being separated out moisture heaies up more easily under the equal heating capacity condition, reuse little amount of wind flows through behind the first heat exchanger, the heat transfer coefficient can be on the low side, because the restriction of the heat transfer difference in temperature of first heat exchanger, lead to refrigerating system's condensation temperature on the high side, introduce more air when the bypass wind channel and flow through first heat exchanger, under the condition of big amount of wind, the heat transfer coefficient of first heat exchanger has been promoted greatly, make refrigerating system's condensation temperature relatively descend, realize more energy-conserving, the purpose of high-efficient operation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a heat pump drying system provided in an embodiment of the present invention;
fig. 2 is a schematic structural view of a heat pump drying system provided by the embodiment of the present invention, which includes an air valve;
fig. 3 is a schematic structural diagram of a heat pump drying system provided by an embodiment of the present invention, which includes a third heat exchanger;
fig. 4 is a schematic structural diagram of a heat pump drying system provided by an embodiment of the present invention including a fourth heat exchanger;
fig. 5 is another schematic structural diagram of the heat pump drying system provided by the embodiment of the present invention including a fourth heat exchanger;
fig. 6 is a schematic structural diagram of the heat pump drying system provided by the embodiment of the present invention including a fourth heat exchanger, a fifth heat exchanger, and the like;
FIG. 7 is a schematic structural diagram of a variation of the embodiment of FIG. 6;
fig. 8 is a schematic structural diagram of a heat pump drying system including a sixth heat exchanger according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a heat pump drying system including a seventh heat exchanger according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a heat pump drying system including an eighth heat exchanger according to an embodiment of the present invention;
fig. 11 is a schematic structural view of a modified embodiment of the heat pump drying system shown in fig. 10;
fig. 12 is a schematic structural view of a modified embodiment of the heat pump drying system shown in fig. 11;
fig. 13 is a schematic structural diagram of the heat pump drying system provided by the embodiment of the present invention including a ninth heat exchanger.
Icon: 100-heat pump drying system; 101-return air duct; 102-an air supply duct; 103-a bypass air duct; 104-a first compressor; 105-a first heat exchanger; 106-a first throttling means; 107-a second heat exchanger; 108-a first fan; 109-a first drip tray; 110-a first drain pipe; 111-blast gate; 112-a third heat exchanger; 1121 — a first heat exchange section; 1122-a second heat exchange section; 113-a fourth heat exchanger; 114-a second compressor; 115-a second fan; 116-a second throttling arrangement; 117-fifth heat exchanger; 118-a sixth heat exchanger; 119-a third fan; 120-a seventh heat exchanger; 121-a first water pump; 122-a second drip tray; 123-a second water drain pipe; 124-a fourth fan; 125-a water sowing device; 126-a first valve; 127-a second water pump; 128-a third drip tray; 129-a third drain pipe; 130-a fifth fan; 131-a ninth heat exchanger; 132-eighth heat exchanger.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a heat pump drying system 100. The heat pump drying system 100 can be applied to a heat pump drying system to dry crops, medicinal materials, sludge and the like. The embodiment of the utility model provides a can reach higher air-out temperature under the lower condition of condensing temperature to promote refrigeration cycle's efficiency, make the drying process efficiency of crops, medicinal material, mud etc. obtain promoting.
In the embodiment of the present invention, the heat pump drying system 100 includes a return air duct 101, an air supply duct 102, a bypass air duct 103, a first compressor 104, a first heat exchanger 105, a first throttling device 106, a second heat exchanger 107, and a first fan 108; the exhaust port of the first compressor 104 is connected with the inlet of the first heat exchanger 105, the outlet of the first heat exchanger 105 is connected with one end of the first throttling device 106, the other end of the first throttling device 106 is connected with the inlet of the second heat exchanger 107, and the outlet of the second heat exchanger 107 is connected with the suction port of the first compressor 104; the first fan 108 is arranged on the return air duct 101 or the supply air duct 102, the first heat exchanger 105 is arranged on the supply air duct 102, and the second heat exchanger 107 is arranged on the supply air duct 102 or the return air duct 101; the return air duct 101 is communicated with the air supply duct 102, and the first fan 108 is used for enabling a first part of air in the return air duct 101 to enter the air supply duct 102 after exchanging heat with the second heat exchanger 107 and exchanging heat with the first heat exchanger 105; the bypass air duct 103 is communicated with the return air duct 101 and the supply air duct 102, and the first fan 108 is further configured to make a second portion of air in the return air duct 101 enter the supply air duct 102 through the bypass air duct 103 and exchange heat with the first heat exchanger 105.
It should be noted that, in the embodiment of the present invention, the return air duct 101 and the supply air duct 102 may be divided by referring to the following manner: for the embodiment of the utility model, the drying room is provided with an air duct which is provided with an air return inlet and an air supply outlet, and the air return inlet and the air supply outlet are both communicated with the drying room for placing the materials to be dried; wherein, the air inlet of the return air duct 101 connected with the drying room is a return air inlet, and the air inlet of the air supply duct 102 connected with the drying room is an air supply inlet. The air flows in a substantial direction through the air supply duct 102, the air supply opening, the drying room, the air return opening, and the air return duct 101, and circulates. A section from the return air inlet to the second heat exchanger 107 is substantially a range of the return air duct 101, and a section from the second heat exchanger 107, through the first heat exchanger 105, to the air inlet is substantially a range of the air supply duct 102. What the bypass air duct 103 in the embodiment of the present invention communicates with is the two sides of the second heat exchanger 107, that is, the function of the bypass air duct 103 is to make part of the air in the return air directly used for the heat exchange of the first heat exchanger 105 without passing through the second heat exchanger 107.
As shown in fig. 1, the return air duct 101 and the supply air duct 102 are substantially U-shaped, and the bypass air duct 103 communicates the return air duct 101 and the supply air duct 102; of course, without limitation, the return air duct 101 and the supply air duct 102 may be straight (substantially straight or slightly curved); in this case, the bypass passage may be provided as a pipe communicating both sides of the second heat exchanger 107, so that part of the return air passes through the bypass duct 103 without exchanging heat with the second heat exchanger 107. It should be understood that the wind directions in the two wind tunnels shown in FIG. 1 are generally opposite, but the wind directions of the two wind tunnels may be the same or at any angle.
It should be noted that, in the embodiment of the present invention, through the refrigeration cycle of the compressor, the second heat exchanger 107 acts as an evaporator to absorb heat to the air flowing through the outer surface thereof, so that the air is cooled to separate out moisture; the first heat exchanger 105 serves as a condenser to heat the air flowing through the outer surface thereof, so that the air is warmed; then, sending the heated air into a drying area, so as to absorb the moisture of the dried objects in the drying area into the air; then, the air enters the air return duct 101 through an air return inlet, and then exchanges heat with the second heat exchanger 107; the circulation is carried out in the same week, so as to achieve the purposes of continuously separating out the moisture in the air and continuously reducing the moisture of the dried object.
Alternatively, the first heat exchanger 105 may be a tube and fin heat exchanger or a microchannel heat exchanger; the second heat exchanger 107 may be a tube and fin heat exchanger or a microchannel heat exchanger.
In an optional embodiment, the heat pump drying system 100 further includes a first water pan 109 and a first drain pipe 110, the first water pan 109 is installed below the second heat exchanger 107, and the first drain pipe 110 is connected to the first water pan 109 and is configured to drain water in the first water pan 109 to the outside of the air supply duct 102, the return air duct 101, and the bypass air duct 103.
It should be understood that the first water pan 109 is used for receiving the condensed water generated by the second heat exchanger 107 during the heat exchange process, and the first drain pipe 110 may drain the condensed water in the first water pan 109 to the outside of the air duct. Optionally, can utilize the action of gravity drainage, also can be through the mode drainage that sets up the pump, the embodiment of the utility model provides a do not do specific requirements to this.
Referring to fig. 2, further, the heat pump drying system 100 may further include an air valve 111, where the air valve 111 is installed in the bypass air duct 103 and is used for adjusting the air volume of the bypass air duct 103. That is, the air valve 111 can adjust the opening thereof to adjust the air volume of the bypass air duct 103, thereby controlling the ratio of the first air portion to the second air portion entering the bypass air duct 103.
Referring to fig. 3, in an optional embodiment, the heat pump drying system 100 further includes a third heat exchanger 112, the third heat exchanger 112 has a first heat exchanging portion 1121 and a second heat exchanging portion 1122, the first heat exchanging portion 1121 and the second heat exchanging portion 1122 are connected by a pipeline, and the position of the second heat exchanging portion 1122 is higher than the position of the first heat exchanging portion 1121, so that the first portion of air sequentially passes through the first heat exchanging portion 1121, the second heat exchanger 107 and the second heat exchanging portion 1122.
Note that the above-mentioned "position of the second heat exchange portion 1122 is higher than the position of the first heat exchange portion 1121" means: both can be that second heat transfer part 1122 is wholly higher than first heat transfer part 1121, also can be that second heat exchanger 107 part is higher than first heat transfer part 1121, to this, the embodiment of the utility model provides a do not do the specification. In the embodiment of the present invention, the position of the second heat exchanging portion 1122 of the third heat exchanger 112 is higher than the position of the first heat exchanging portion 1121, so that the liquid refrigerant in the second heat exchanging portion 1122 can better flow into the first heat exchanging portion 1121, and the gaseous refrigerant in the first heat exchanging portion 1121 can also better flow into the first heat exchanging portion 1121. The air flows through the surface of the first heat exchange portion 1121 to reduce the temperature, so that the refrigerant inside the first heat exchange portion 1121 absorbs heat and is gasified, due to the buoyancy, the gaseous refrigerant floats upwards and flows into the second heat exchange portion 1122, and the air flows through the second heat exchange portion 1122 to increase the temperature, so that the refrigerant inside the first heat exchange portion 1121 releases heat and is liquefied, and due to the gravity action of the liquid refrigerant, the liquid refrigerant flows into the first heat exchange portion 1121, and the process is repeated in this way, so that the circulation of the refrigerant is formed. Referring to fig. 4, in an alternative embodiment, the heat pump drying system 100 further includes a fourth heat exchanger 113, and the fourth heat exchanger 113 is disposed upstream of the second heat exchanger 107, so that the first portion of air passes through the fourth heat exchanger 113, the second heat exchanger 107 and the first heat exchanger 105 in sequence.
It should be noted that the first portion of air passes through the fourth heat exchanger 113, the second heat exchanger 107 and the first heat exchanger 105 in sequence, and the second portion of air enters the air duct 102 from the bypass air duct 103 and exchanges heat with the first heat exchanger 105. The fourth heat exchanger 113 is located between the bypass duct 103 and the second heat exchanger 107 in the return air duct 101, and the fourth heat exchanger 113 is provided upstream of the second heat exchanger 107. In some applications, because the energy of the whole system and the area to be dried is not balanced or the temperature of the area to be dried needs to be reduced, heat is released from the system to the outside, and the heat is released from the system by arranging the fourth heat exchanger 113, and the amount of water separated after the air passes through the fourth heat exchanger 113 and the second heat exchanger 107 can also be increased.
Referring to fig. 5, further, in the scheme including the first water pan 109 and the first drain pipe 110, the first water pan 109 is installed below the second heat exchanger 107 and the fourth heat exchanger 113, the first drain pipe 110 is connected to the first water pan 109 and is connected to an inlet of the fourth heat exchanger 113, so as to drain water in the first water pan 109 to an inlet of the fourth heat exchanger 113, and an outlet of the fourth heat exchanger 113 is used to drain water out of the drying area. In the scheme, the condensed water can be fully utilized, and a better energy-saving effect is achieved.
Furthermore, as shown in fig. 5, the second heat exchanger 107 and the first heat exchanger 105 are both installed in the air supply duct 102, the fourth heat exchanger 113 is located below the second heat exchanger 107, and the first drain pipe 110 can drain water to the fourth heat exchanger 113 under the action of gravity, so that the use of a water pump and the use of energy are reduced, and a more energy-saving effect is achieved.
Referring to fig. 6, in an alternative embodiment, the heat pump drying system 100 further includes a second compressor 114, a second fan 115, a second throttling device 116, a fourth heat exchanger 113 and a fifth heat exchanger 117, where the fourth heat exchanger 113 is located upstream of the second heat exchanger 107, and the fifth heat exchanger 117 is located outside the return air duct 101 and the supply air duct 102; the second compressor 114 is connected with the fourth heat exchanger 113, the fourth heat exchanger 113 is connected with the second throttling device 116, the second throttling device 116 is connected with the fifth heat exchanger 117, the fifth heat exchanger 117 is connected with the second compressor 114, and the second fan 115 is used for exchanging heat with the fifth heat exchanger 117.
In the embodiment shown in fig. 6, the fourth heat exchanger 113 of the heat pump drying system 100 may exchange heat with the second compressor 114, the fifth heat exchanger 117, and the like, so as to provide cooling energy to the fourth heat exchanger 113, and the cooling energy is provided by the refrigeration system including the second compressor 114, so that the required cooling energy can be realized by consuming less power due to the energy efficiency ratio, and in addition, the cooling energy can be effectively provided to the fourth heat exchanger 113 when the ambient temperature is greatly changed.
Referring to fig. 7, further, the heat pump drying system 100 further includes a first water pan 109 and a first drain pipe 110, the first water pan 109 is disposed below the second heat exchanger 107 and the fourth heat exchanger 113, and the first drain pipe 110 is connected to the first water pan 109 and is configured to drain and spray water in the first water pan 109 to an outer surface of the fifth heat exchanger 117. At this time, the fifth heat exchanger 117 may be a fin-and-tube heat exchanger, a micro-channel heat exchanger, a coil heat exchanger, or the like. The fifth heat exchanger 117 can be cooled by spraying the water in the first water pan 109 on the outer surface of the fifth heat exchanger 117, and meanwhile, the condensed water in the first water pan 109 is better utilized, so that the purposes of energy conservation and environmental protection are achieved.
Alternatively, a spray head may be provided on the first drain pipe 110 so as to uniformly spray water on the outer surface of the fifth heat exchanger 117.
Referring to fig. 8, in an alternative embodiment, the heat pump drying system 100 further includes a sixth heat exchanger 118 and a third fan 119, the sixth heat exchanger 118 is located outside the air duct and is respectively connected to the first heat exchanger 105 and the first compressor 104 for exchanging heat with the refrigerant, and the third fan 119 is used for exchanging heat with the sixth heat exchanger 118.
It should be noted that the sixth heat exchanger 118 can exchange heat between the heat in the air duct and the outside, so as to adjust the conditions of unbalanced heat in the system and the drying area and change the temperature in the drying area, and achieve the effects of improving the overall energy efficiency and the water removal amount.
Alternatively, the sixth heat exchanger 118 may be a tube and fin heat exchanger or a microchannel heat exchanger.
It should be noted that in the scheme including the first water pan 109 and the first drain pipe 110, the first water pan 109 is disposed below the second heat exchanger 107, and the first drain pipe 110 is connected to the first water pan 109 and connected to the sixth heat exchanger 118, and is configured to guide water in the first water pan 109 to an outer surface of the sixth heat exchanger 118, so as to further enhance the cooling effect.
Referring to fig. 9, in an alternative embodiment, the heat pump drying system 100 further includes a seventh heat exchanger 120, where the seventh heat exchanger 120 is located outside the air duct and is respectively connected to the first heat exchanger 105 and the first throttling device 106 for exchanging heat with the refrigerant.
As shown in fig. 9, a seventh heat exchanger 120 may be used in conjunction with the third heat exchanger 112. Moreover, the embodiment of the utility model provides a technical scheme can rationally combine.
Referring to fig. 10, in an optional embodiment, the heat pump drying system 100 further includes a first water pump 121, a second water pan 122, a second water drainage pipe 123, a fourth fan 124, an eighth heat exchanger 132 and a water spreading device 125, where the eighth heat exchanger 132 is located outside the air duct, and is respectively connected to the first heat exchanger 105 and the first throttling device 106, and is configured to exchange heat with the refrigerant; the second water drainage pipe 123 is connected with the second water pan 122, the first water pump 121 is installed on the second water pan 122, the water sowing device 125 is connected with the second water drainage pipe 123, the first water pump 121 is used for enabling water in the second water pan 122 to sequentially pass through the second water drainage pipe 123 and the water sowing device 125, and spraying the water to the outer surface of the eighth heat exchanger 132 through the water sowing device 125, and the fourth fan 124 is used for exchanging heat with the eighth heat exchanger 132; the heat pump drying system 100 further includes a first water pan 109 and a first drain pipe 110, the first water pan 109 is disposed below the second heat exchanger 107, and the first drain pipe 110 is connected to the first water pan 109 and is configured to drain water in the first water pan 109 to the second water pan 122.
Referring to fig. 11, in an alternative embodiment, the heat pump drying system 100 further includes a fourth heat exchanger 113, the fourth heat exchanger 113 is disposed at an upstream of the second heat exchanger 107, the first water collector 109 is disposed below the second heat exchanger 107 and the fourth heat exchanger 113, two ends of the fourth heat exchanger 113 are connected to the second drain pipe 123 through a pipeline, and the first water pump 121 is further configured to enable water in the second water collector 122 to flow through the fourth heat exchanger 113.
Referring to fig. 12, in an alternative embodiment, the heat pump drying system 100 further includes a first valve 126, the first valve 126 is disposed on the second water drainage pipe 123, two ends of the fourth heat exchanger 113 are respectively connected to the second water drainage pipe 123 and have two connection positions, and the first valve 126 is located between the two connection positions.
Referring to fig. 13, in an alternative embodiment, the heat pump drying system 100 further includes a first water pan 109, a first drain pipe 110, a second water pump 127, a third water pan 128, a third drain pipe 129, a fourth heat exchanger 113, a fifth fan 130, a ninth heat exchanger 131, and a water spreading device 125; the fourth heat exchanger 113 is located upstream of the second heat exchanger 107, and both ends thereof are respectively connected with both ends of the ninth heat exchanger 131; the first water pan 109 is located below the second heat exchanger 107 and the fourth heat exchanger 113, the third water pan 128 is located below the ninth heat exchanger 131, the first drain pipe 110 is connected with the first water pan 109 and used for draining water in the first water pan 109 to the third water pan 128, the third drain pipe 129 is connected with the third water pan 128 and connected with the water spreading device 125, and the second water pump 127 is mounted on the third water pan 128 and used for spraying water in the third water pan 128 to the outer surface of the ninth heat exchanger 131 through the third drain pipe 129 and the water spreading device 125.
The embodiment of the utility model provides a heat pump drying system 100: in the embodiment of the present invention, in order to condense more water from the air flowing through the outer surface of the second heat exchanger 107 more efficiently, a lower air volume can be made to flow through the second heat exchanger 107, that is, a part of the air is directly introduced into the air supply duct 102 through the bypass duct 103 without passing through the second heat exchanger 107; the air with the water separated out is easier to heat up under the same heating quantity; the heat exchange coefficient of the heated air can be reduced after the air flows through the first heat exchanger 105; because of the limitation of the heat exchange temperature difference of the first heat exchanger 105, the condensation temperature of the system is higher, and more air can be introduced into the bypass air duct 103 to flow through the first heat exchanger 105, so that the heat exchange coefficient of the first heat exchanger 105 is remarkably improved, the condensation temperature of the system is relatively reduced, and the purposes of more energy conservation and more efficient operation are achieved. The heat pump drying system 100 is provided with a bypass air duct 103 between the return air duct 101 and the supply air duct 102, and part of air in the return air can directly enter the supply air duct 102 from the bypass air duct 103 without passing through the second heat exchanger 107. The embodiment of the utility model provides a under the prerequisite that does not reduce the except that the water yield, through adjusting the amount of wind, reach the purpose that reduces condensing temperature in the refrigeration cycle to realize littleer energy consumption, higher energy efficiency ratio.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. A heat pump drying system is characterized by comprising a return air duct (101), an air supply duct (102), a bypass air duct (103), a first compressor (104), a first heat exchanger (105), a first throttling device (106), a second heat exchanger (107) and a first fan (108);
the exhaust port of the first compressor (104) is connected with the inlet of the first heat exchanger (105), the outlet of the first heat exchanger (105) is connected with one end of the first throttling device (106), the other end of the first throttling device (106) is connected with the inlet of the second heat exchanger (107), and the outlet of the second heat exchanger (107) is connected with the suction port of the first compressor (104);
the first fan (108) is mounted on the return air duct (101) or the supply air duct (102), the first heat exchanger (105) is mounted on the supply air duct (102), and the second heat exchanger (107) is mounted on the supply air duct (102) or the return air duct (101);
the return air duct (101) is communicated with the supply air duct (102), and the first fan (108) is used for enabling a first part of air in the return air duct (101) to enter the supply air duct (102) after exchanging heat with the second heat exchanger (107) and exchanging heat with the first heat exchanger (105);
the bypass air duct (103) is communicated with the return air duct (101) and the air supply duct (102), and the first fan (108) is also used for enabling a second part of air in the return air duct (101) to enter the air supply duct (102) through the bypass air duct (103) and exchange heat with the first heat exchanger (105).
2. The heat pump drying system of claim 1, wherein the heat pump drying system (100) further comprises a first water pan (109) and a first drain pipe (110), the first water pan (109) is installed below the second heat exchanger (107), and the first drain pipe (110) is connected to the first water pan (109) and is used for draining water in the first water pan (109) to the outside of the air supply duct (102), the return air duct (101) and the bypass air duct (103).
3. The heat pump drying system according to claim 1 or 2, wherein the heat pump drying system (100) further comprises an air valve (111), and the air valve (111) is mounted to the bypass air duct (103) for adjusting the air volume of the bypass air duct (103).
4. The heat pump drying system according to claim 1 or 2, wherein the heat pump drying system (100) further comprises a third heat exchanger (112), the third heat exchanger (112) has a first heat exchange portion (1121) and a second heat exchange portion (1122), the first heat exchange portion (1121) and the second heat exchange portion (1122) are connected by a pipeline, and the second heat exchange portion (1122) is located at a higher position than the first heat exchange portion (1121), so that the first portion of air passes through the first heat exchange portion (1121), the second heat exchanger (107) and the second heat exchange portion (1122) in sequence.
5. Heat pump drying system according to claim 1 or 2, characterised in that the heat pump drying system (100) further comprises a fourth heat exchanger (113), the fourth heat exchanger (113) being arranged upstream of the second heat exchanger (107) such that the first portion of air passes the fourth heat exchanger (113), the second heat exchanger (107) and the first heat exchanger (105) in sequence.
6. The heat pump drying system of claim 5, wherein the heat pump drying system (100) further comprises a first water pan (109) and a first drain pipe (110), the first water pan (109) is installed below the second heat exchanger (107), the first drain pipe (110) is connected with the first water pan (109) and is connected with the inlet of the fourth heat exchanger (113) for draining water in the first water pan (109) to the inlet of the fourth heat exchanger (113), and the outlet of the fourth heat exchanger (113) is used for draining water out of the drying area.
7. The heat pump drying system according to claim 1 or 2, wherein the heat pump drying system (100) further comprises a second compressor (114), a second fan (115), a second throttling device (116), a fourth heat exchanger (113) and a fifth heat exchanger (117), wherein the fourth heat exchanger (113) is located upstream of the second heat exchanger (107), and the fifth heat exchanger (117) is located outside the return air duct (101) and the supply air duct (102);
the second compressor (114) is connected with the fourth heat exchanger (113), the fourth heat exchanger (113) is connected with the second throttling device (116), the second throttling device (116) is connected with the fifth heat exchanger (117), the fifth heat exchanger (117) is connected with the second compressor (114), and the second fan (115) is used for exchanging heat with the fifth heat exchanger (117).
8. The heat pump drying system of claim 7, wherein the heat pump drying system (100) further comprises a first water pan (109) and a first drain pipe (110), the first water pan (109) is disposed below the second heat exchanger (107) and the fourth heat exchanger (113), and the first drain pipe (110) is connected to the first water pan (109) and is used for spraying water draining in the first water pan (109) to the outer surface of the fifth heat exchanger (117).
9. The heat pump drying system of claim 1 or 2, wherein the heat pump drying system (100) further comprises a sixth heat exchanger (118) and a third fan (119), the sixth heat exchanger (118) is located outside the air duct and is respectively connected to the first heat exchanger (105) and the first compressor (104) for exchanging heat with the refrigerant, and the third fan (119) is used for exchanging heat with the sixth heat exchanger (118).
10. The heat pump drying system of claim 9, wherein the heat pump drying system (100) further comprises a first water pan (109) and a first drain pipe (110), the first water pan (109) is disposed below the second heat exchanger (107), and the first drain pipe (110) is connected to the first water pan (109) and the sixth heat exchanger (118) for draining water in the first water pan (109) to an outer surface of the sixth heat exchanger (118).
11. The heat pump drying system according to claim 1 or 2, wherein the heat pump drying system (100) further includes a seventh heat exchanger (120), and the seventh heat exchanger (120) is located outside the air duct and is respectively connected to the first heat exchanger (105) and the first throttling device (106) for exchanging heat with the refrigerant.
12. The heat pump drying system according to claim 1 or 2, wherein the heat pump drying system (100) further comprises a first water pump (121), a second water pan (122), a second drain pipe (123), a fourth fan (124), an eighth heat exchanger (132) and a water spreading device (125), the eighth heat exchanger (132) is located outside the air duct and is respectively connected with the first heat exchanger (105) and the first throttling device (106) for exchanging heat with the refrigerant, the second drain pipe (123) is connected with the second water pan (122), the first water pump (121) is installed on the second water pan (122), the water spreading device (125) is connected with the second drain pipe (123), the first water pump (121) is used for enabling the water in the second water pan (122) to sequentially pass through the second drain pipe (123) and the water spreading device (125), spraying water to the outer surface of the eighth heat exchanger (132) through the water spraying device (125), wherein the fourth fan (124) is used for exchanging heat with the eighth heat exchanger (132);
the heat pump drying system (100) further comprises a first water pan (109) and a first water drainage pipe (110), the first water pan (109) is arranged below the second heat exchanger (107), and the first water drainage pipe (110) is connected with the first water pan (109) and used for draining water in the first water pan (109) to a water drainage pipe in front of the second water pan (122) or the first water pump (121).
13. The heat pump drying system of claim 12, wherein the heat pump drying system (100) further comprises a fourth heat exchanger (113), the fourth heat exchanger (113) is disposed upstream of the second heat exchanger (107), the first water pan (109) is disposed below the second heat exchanger (107) and the fourth heat exchanger (113), two ends of the fourth heat exchanger (113) are connected with the second drain pipe (123) through pipelines, and the first water pump (121) is further configured to enable water in the second water pan (122) to flow through the fourth heat exchanger (113).
14. The heat pump drying system of claim 13, wherein the heat pump drying system (100) further comprises a first valve (126), the first valve (126) is disposed on the second drain pipe (123), two ends of the fourth heat exchanger (113) are respectively connected to the second drain pipe (123) and have two connection positions, and the first valve (126) is located between the two connection positions.
15. The heat pump drying system according to claim 1 or 2, wherein the heat pump drying system (100) further comprises a first water pan (109), a first drain pipe (110), a second water pump (127), a third water pan (128), a third drain pipe (129), a fourth heat exchanger (113), a fifth fan (130), a ninth heat exchanger (131) and a water spreading device (125);
the fourth heat exchanger (113) is positioned at the upstream of the second heat exchanger (107), and two ends of the fourth heat exchanger are respectively connected with two ends of the ninth heat exchanger (131);
the first water pan (109) is located below the second heat exchanger (107) and the fourth heat exchanger (113), the third water pan (128) is located below the ninth heat exchanger (131), a first water discharge pipe (110) is connected with the first water pan (109) and used for guiding water in the first water pan (109) to the third water pan (128), a third water discharge pipe (129) is connected with the third water pan (128) and connected with the water sowing device (125), and a second water pump (127) is mounted on the third water pan (128) and used for spraying water in the third water pan (128) to the outer surface of the ninth heat exchanger (131) through the third water discharge pipe (129) and the water sowing device (125).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021922530.9U CN212274576U (en) | 2020-09-04 | 2020-09-04 | Heat pump drying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021922530.9U CN212274576U (en) | 2020-09-04 | 2020-09-04 | Heat pump drying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212274576U true CN212274576U (en) | 2021-01-01 |
Family
ID=73870939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021922530.9U Active CN212274576U (en) | 2020-09-04 | 2020-09-04 | Heat pump drying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212274576U (en) |
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2020
- 2020-09-04 CN CN202021922530.9U patent/CN212274576U/en active Active
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