CN210135732U - Heat pump drying device with refrigeration function - Google Patents
Heat pump drying device with refrigeration function Download PDFInfo
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- CN210135732U CN210135732U CN201920598626.5U CN201920598626U CN210135732U CN 210135732 U CN210135732 U CN 210135732U CN 201920598626 U CN201920598626 U CN 201920598626U CN 210135732 U CN210135732 U CN 210135732U
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Abstract
The utility model relates to a stoving and cold-stored technical field especially indicate a heat pump drying device of cold-stored function in area. The system comprises an open heat pump drying circulating system, a closed heat pump drying circulating system and a refrigerating system, wherein the open heat pump drying circulating system comprises a compressor, a four-way reversing valve, an indoor heat exchanger, an expansion valve, a solenoid valve I and an outdoor heat exchanger, wherein the four-way reversing valve, the indoor heat exchanger, the expansion valve, the solenoid valve I and the outdoor heat exchanger are sequentially connected with the compressor; the closed heat pump drying circulating system comprises a compressor, an indoor heat exchanger, an expansion valve, a solenoid valve II and an evaporator, wherein the indoor heat exchanger, the expansion valve, the solenoid valve II and the evaporator are sequentially connected with the compressor; the refrigeration system comprises a compressor, a four-way reversing valve, an outdoor heat exchanger, a solenoid valve I, an expansion valve and an indoor heat exchanger, wherein the four-way reversing valve, the outdoor heat exchanger, the solenoid valve I, the expansion valve and the indoor heat exchanger are sequentially connected with the compressor, and all the devices are connected through pipelines. The utility model discloses a mode that open heat pump was dried heats the stoving room, and the mode that adopts the closed heat pump simultaneously dehumidifies the stoving room, and the system adopts the switching to combine the heat pump stoving mode according to actual conditions, and energy-conserving effect is obvious.
Description
Technical Field
The utility model relates to a stoving and cold-stored technical field especially indicate heat pump drying device of cold-stored function in area.
Background
China is a large country for agricultural production, drying is an important link for deep processing of a large number of agricultural and sideline products, and a dryer plays a significant role in the deep processing of the agricultural and sideline products. The traditional dryer mainly uses coal, natural gas and biomass combustion and pure electric heating as energy sources, and has the problems of air pollution, high energy consumption and the like. In addition, with the improvement of living standard, people pursue food to change from pure satiety to original taste and mouthfeel of food. The processing technology of heat pump drying has the advantage of unique taste of food; the heat pump type drying equipment control system can ensure the drying quality of agricultural and sideline products and reduce energy consumption by heat pump drying, and has important social and economic values. However, in some areas, due to the specificity of the drying season, the heat pump drying can only be used for a period of time, the equipment stop time is long, and the operation of the equipment is not maximized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the weak point that exists among the above-mentioned prior art, and provide a heat pump drying device of cold-stored function in area, the utility model discloses a heat pump drying device locates in the stoving room, lasts heat pump drying to the product on the skip in the stoving room.
The technical scheme of the utility model is realized like this:
the heat pump drying device with the refrigeration function comprises an open heat pump drying circulating system, a closed heat pump drying circulating system and a refrigeration system, wherein the open heat pump drying circulating system comprises a compressor, a four-way reversing valve, an indoor heat exchanger, an expansion valve, a solenoid valve I and an outdoor heat exchanger, wherein the four-way reversing valve is sequentially connected with the compressor; the closed heat pump drying circulating system comprises a compressor, an indoor heat exchanger, an expansion valve, a solenoid valve II and an evaporator, wherein the indoor heat exchanger, the expansion valve, the solenoid valve II and the evaporator are sequentially connected with the compressor; the refrigeration system comprises a compressor, a four-way reversing valve, an outdoor heat exchanger, a solenoid valve I, an expansion valve and an indoor heat exchanger, wherein the four-way reversing valve, the outdoor heat exchanger, the solenoid valve I, the expansion valve and the indoor heat exchanger are sequentially connected with the compressor, and all the devices are connected through pipelines.
The outdoor heat exchanger outside is equipped with fan I, the indoor heat exchanger outside is equipped with fan II, is equipped with electric heater between indoor heat exchanger and the fan II, and electric heater just opens when only outdoor ambient temperature is very low, heat pump capacity is not enough.
The fan II is a driving fan, indoor air quantity circularly passes through the fan II, and the driving electric heater is an auxiliary heat source.
According to the application method of the heat pump drying device with the refrigeration function, during an open heat pump drying cycle, a compressor, an electromagnetic valve I and a fan II are started, and the electromagnetic valve II is closed; at the moment, the flow direction of the refrigerant at the outlet of the compressor is a four-way reversing valve, an indoor heat exchanger, an expansion valve and an outdoor heat exchanger in sequence. The indoor heat exchanger is a condenser, indoor air is driven by a driving fan in the drying room to circularly heat through the condenser until the temperature required by drying is reached, and the materials are dried. When the external temperature is lower and the capacity of the heat pump unit can not meet the drying requirement, the electric heating is started for auxiliary heating.
And when the closed heat pump is in drying circulation, the compressor, the electromagnetic valve II and the fan II are started, and the electromagnetic valve I is closed. When the temperature in the drying room reaches the requirement by the open heat pump drying system, the open heat pump cycle is closed, and the closed heat pump cycle is opened. At this time, the refrigerant at the outlet of the compressor is divided into a condenser (indoor heat exchanger), an expansion valve, an evaporator, and finally flows back to the compressor. High humid air in the stoving room is advanced to be gone into the evaporimeter through drive fan II and is dehumidified and cool down the back and get into the condenser and heat, gets into the stoving room at last and dries the material.
And during refrigeration circulation, the four-way reversing valve is switched, the compressor, the electromagnetic valve I and the fan II are started, and the electromagnetic valve II is closed. At this time, the outdoor heat exchanger is a condenser, and the indoor heat exchanger is an evaporator. The flow direction of the refrigerant at the outlet of the compressor is sequentially a four-way reversing valve, an outdoor condenser, an expansion valve and an indoor heat exchanger. Indoor wind is mainly driven by the fan II to cool through the indoor heat exchanger. And stopping running the compressor when the indoor temperature reaches the lower limit of the refrigerating temperature. And starting the compressor when the indoor temperature exceeds the upper limit of the refrigerating temperature.
And when the refrigeration cycle is used for defrosting, the four-way reversing valve is switched, the compressor and the electromagnetic valve I are opened, and the electromagnetic valve II and the fan II are closed. The defrosting of the open heat pump cycle and the refrigeration cycle mainly adopts hot gas defrosting, and the flow direction of a refrigerant is changed by adopting a four-way reversing valve, so that high-temperature fluid enters the frosted heat exchanger to defrost.
The beneficial effects of the utility model reside in that:
1. the utility model discloses a mode that open heat pump was dried heats the stoving room, and the mode that adopts the closed heat pump simultaneously dehumidifies the stoving room, and the system adopts the switching to combine the heat pump stoving mode according to actual conditions, and energy-conserving effect is obvious.
2. According to the particularity of stoving season, when the heat pump stoving can only utilize one section, the utility model discloses an adjust the four-way reversing valve, can realize the cold-stored function in stoving room, furthest utilizes the value in stoving room.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a diagram of the heat pump drying device with a refrigeration function.
In the figure, 1 is a compressor, 2 is a four-way reversing valve, 3 is an expansion valve, 4 is an outdoor heat exchanger, 5 is an electromagnetic valve I, 7 is an electromagnetic valve II, 6 is a fan I, 8 is an indoor heat exchanger, 9 is an electric heater, 10 is a fan II, 11 is an evaporator, 12 is a material vehicle, and 13 is a drying room door.
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 any creative effort belong to the protection scope of the present invention.
As shown in fig. 1, an embodiment of the utility model provides a heat pump drying device with refrigeration function, including open heat pump drying cycle system, closed heat pump drying cycle system and refrigeration system, open heat pump drying cycle system includes compressor 1, four-way reversing valve 2, indoor heat exchanger 8, expansion valve 3, solenoid valve I5 and outdoor heat exchanger 4 that connect gradually with compressor 1; the closed heat pump drying circulating system comprises a compressor 1, an indoor heat exchanger 8, an expansion valve 3, an electromagnetic valve II 7 and an evaporator 11, wherein the indoor heat exchanger 8, the expansion valve 3, the electromagnetic valve II 7 and the evaporator are sequentially connected with the compressor 1; the refrigeration system comprises a compressor 1, a four-way reversing valve 2, an outdoor heat exchanger 4, a solenoid valve I5, an expansion valve 3 and an indoor heat exchanger 8 which are sequentially connected with the compressor, and all the devices are connected through pipelines.
The outdoor heat exchanger 4 outside is equipped with fan I6, the indoor heat exchanger 8 outside is equipped with fan II 10, is equipped with electric heater 9 between indoor heat exchanger 8 and fan II 10, and only when outdoor ambient temperature is very low, electric heater 9 just opens when the heat pump ability is not enough.
The fan II 10 is a driving fan, indoor air quantity circularly passes through the fan II 10, and the driving electric heater 9 is an auxiliary heat source.
And in the open heat pump drying cycle, the compressor 1 is started, the electromagnetic valve I5 is opened, and the electromagnetic valve II 7 is closed. In this case, the outdoor heat exchanger 4 is an evaporator, and the indoor heat exchanger 8 is a condenser. The flow direction of the refrigerant at the outlet of the compressor 1 is a four-way reversing valve 2, an indoor heat exchanger 8, an expansion valve 3, an electromagnetic valve I5 and an outdoor heat exchanger 4 in sequence. Indoor wind is driven by the fan II 10 in the drying room to circularly heat through the indoor heat exchanger 8 until the temperature required by drying is reached, and the materials are dried. When the external temperature is lower and the heat pump unit capacity can not meet the drying requirement, the electric heater 9 is started to carry out auxiliary heating.
When the outdoor environment temperature is low, the open heat pump operates for a long time to cause the evaporator to be frosted, the four-way reversing valve 2 is switched at the moment, and the fan II 10 is closed. The flow direction of the refrigerant at the outlet of the compressor 1 is a four-way reversing valve 2, an outdoor heat exchanger 4, a solenoid valve I5, an expansion valve 3 and the outdoor heat exchanger 4 in sequence. High-temperature fluid enters the interior of the outdoor heat exchanger for defrosting.
And in the closed heat pump drying cycle, when the open heat pump system enables the temperature in the drying room to meet the requirement, the closed heat pump cycle is started. The compressor 1 is mainly started, the electromagnetic valve II 7 is started, and the electromagnetic valve 5 is closed. At this time, the refrigerant at the outlet of the compressor 1 flows to the indoor heat exchanger 8, the expansion valve 3, the evaporator 11, and finally flows back to the compressor. High humid air in the drying room enters the evaporator through the fan II 10 in advance to be dehumidified and cooled, then enters the indoor heat exchanger 8 to be heated, and finally enters the drying room to be dried.
And the cold storage system is started to refrigerate the materials when the drying room is idle. In particular to a change-over four-way reversing valve 2. The compression 1 is opened, the solenoid valve I5 is opened, and the solenoid valve II 7 is closed. In this case, the outdoor heat exchanger 4 is a condenser, and the indoor heat exchanger 8 is an evaporator. The flow direction of the refrigerant at the outlet of the compressor 1 is sequentially a four-way reversing valve 2, an outdoor heat exchanger 4, a solenoid valve I5, an expansion valve 3 and an indoor heat exchanger 8. Indoor wind is mainly driven by the fan II 10 to cool through the indoor heat exchanger 8. The operation of the compressor 1 is stopped when the internal temperature reaches the lower limit of the refrigerating temperature. The compressor 1 is turned on when the indoor temperature exceeds the upper limit of the refrigerating temperature.
When the indoor environment temperature is low, the refrigeration system runs for a long time to cause the evaporator to be frosted, the four-way reversing valve 2 is switched at the moment, and the fan II 10 is closed. The flow direction of the refrigerant at the outlet of the compressor 1 is a four-way reversing valve 2, an indoor heat exchanger 8, an expansion valve 3, an electromagnetic valve I5 and an outdoor heat exchanger 4 in sequence. High-temperature fluid enters the indoor heat exchanger for defrosting.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. Take heat pump drying device of cold-stored function, its characterized in that: the system comprises an open heat pump drying circulating system, a closed heat pump drying circulating system and a refrigerating system, wherein the open heat pump drying circulating system comprises a compressor (1), a four-way reversing valve (2) sequentially connected with the compressor (1), an indoor heat exchanger (8), an expansion valve (3), an electromagnetic valve I (5) and an outdoor heat exchanger (4); the closed heat pump drying circulation system comprises a compressor (1), an indoor heat exchanger (8) sequentially connected with the compressor (1), an expansion valve (3), a solenoid valve II (7) and an evaporator (11); the refrigeration system comprises a compressor (1), a four-way reversing valve (2), an outdoor heat exchanger (4), a solenoid valve I (5), an expansion valve (3) and an indoor heat exchanger (8), wherein the four-way reversing valve, the solenoid valve I (5), the expansion valve (3) and the indoor heat exchanger are sequentially connected with the compressor (1), and all the devices are connected through pipelines.
2. The heat pump drying device with a refrigeration function according to claim 1, characterized in that: the outdoor heat exchanger (4) outside is equipped with fan I (6), and indoor heat exchanger (8) outside is equipped with fan II (10), is equipped with electric heater (9) between indoor heat exchanger (8) and fan II (10).
3. The heat pump drying device with a refrigeration function according to claim 2, characterized in that: the fan II (10) is a driving fan, and the electric heater (9) is an auxiliary heat source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920598626.5U CN210135732U (en) | 2019-04-28 | 2019-04-28 | Heat pump drying device with refrigeration function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920598626.5U CN210135732U (en) | 2019-04-28 | 2019-04-28 | Heat pump drying device with refrigeration function |
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| CN210135732U true CN210135732U (en) | 2020-03-10 |
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| CN201920598626.5U Active CN210135732U (en) | 2019-04-28 | 2019-04-28 | Heat pump drying device with refrigeration function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118472A (en) * | 2019-04-28 | 2019-08-13 | 中原工学院 | Heat pump drying system with cold storage function |
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2019
- 2019-04-28 CN CN201920598626.5U patent/CN210135732U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118472A (en) * | 2019-04-28 | 2019-08-13 | 中原工学院 | Heat pump drying system with cold storage function |
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