CN112229166A - An air source heat pump opening and closing integrated downward air dryer - Google Patents
An air source heat pump opening and closing integrated downward air dryer Download PDFInfo
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- CN112229166A CN112229166A CN202011272051.1A CN202011272051A CN112229166A CN 112229166 A CN112229166 A CN 112229166A CN 202011272051 A CN202011272051 A CN 202011272051A CN 112229166 A CN112229166 A CN 112229166A
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- Prior art keywords
- heat pump
- source heat
- air
- air source
- charging chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
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- F26B21/204—
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- F26B21/30—
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- F26B21/333—
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
本发明属于烘干设备技术领域，具体涉及一种空气源热泵开闭一体下送风式烘干机，包括空气源热泵和装料室，所述装料室是密闭的。在烘干果蔬过程中，前期物料含湿量大，系统电动新风门和负压风机打开，形成开式结构，将前期较多的水分经过负压风机快速带走，避免物料前期因含湿量大来不及除湿而发生变质；中期物料含湿量降低到一定程度后，空气源热泵关闭电动新风门和负压风机，形成闭式结构，避免气流余热的损失，同时利用空气源热泵内设置的除湿蒸发器和冷凝器将物料烘干除湿至含水量较小的范围；后期含水量较小时采用开式结构，加热排湿，使物料含水率达到要求，上述两种模式通过智能控制模块控制，有效的提高了物料的烘干品质，也实现了物料烘干的节能减排。
The invention belongs to the technical field of drying equipment, and in particular relates to an air-source heat pump opening and closing integrated downward blowing type dryer, comprising an air source heat pump and a charging chamber, wherein the charging chamber is sealed. In the process of drying fruits and vegetables, the material has a large moisture content in the early stage. The electric fresh air door and negative pressure fan of the system are opened to form an open structure. It is too late to dehumidify and deteriorate; in the mid-term, after the moisture content of the material is reduced to a certain level, the air source heat pump closes the electric fresh air door and the negative pressure fan to form a closed structure to avoid the loss of airflow waste heat, and use the dehumidification set in the air source heat pump. The evaporator and condenser dry and dehumidify the material to a range with a small water content; in the later stage, when the water content is small, an open structure is used to heat and dehumidify the material to make the material moisture content meet the requirements. The above two modes are controlled by the intelligent control module, which is effective It improves the drying quality of materials, and also realizes energy saving and emission reduction of material drying.
Description
Technical Field
The invention belongs to the technical field of drying equipment, and particularly relates to an air source heat pump opening and closing integrated lower air supply type dryer.
Background
At present, the air source heat pump drying machines in the market are of an open structure and a closed structure in a large number; open architecture air source heat pump shortcoming: 1. the moisture removal and heat loss are large; 2. the energy efficiency ratio is severely restricted by the environment temperature, the environment temperature is lower than 5 ℃, the energy efficiency of the unit is severely influenced, and electric heating auxiliary matching is needed; the dehumidifier with the closed structure has the defects that: 1. the variation range of the operating condition is large, and the stability control of the refrigerating system is complex; 2. the dehumidification heat pump is used for improving the heating COP by acquiring latent heat of steam condensation through dehumidification, the energy efficiency of the dehumidification heat pump is severely restricted by the working conditions of high temperature and low humidity and low temperature and low humidity, and the electric heating assistance is needed for the early-stage heating of materials and the later-stage constant temperature maintenance of a drying room.
Disclosure of Invention
The invention overcomes the defects in the prior art and provides an air source heat pump opening and closing integrated lower air supply type dryer.
In order to solve the technical problems, the invention is realized by the following technical scheme:
an integrative lower air supply formula drying-machine of air source heat pump switching, it includes: 1-air return inlet, 2-control module, 3-throttle plate, 4-heat exchange core, 5-electric fresh air door, 6-negative pressure fan, 7-evaporator, 8-external fan, 9-compressor, 10-dehumidification evaporator, 11-water pan, 12-condenser, 13-drain pipe, 14-air inlet, 15-lower circulating fan, 16-charging chamber, 17-material flat bed, 18-upper circulating fan and 19-air source heat pump.
Preferably, the electric fresh air door (5) and the negative pressure fan (6) which are arranged in the air source heat pump (19) are opened simultaneously in the fruit and vegetable drying process to form an open structure, more moisture in the early stage is taken away quickly through the negative pressure fan (6), and deterioration of the materials in the early stage due to the fact that the moisture content is large and the materials cannot be dehumidified in time is avoided.
Preferably, the heat exchange core body (4) is of a cross-flow plate type structure, one group of channels are connected with the return air inlet (1) and the negative pressure fan (6), and the other group of channels are connected with the electric fresh air door (5) and the condenser (12), so that the purposes of reducing heat loss and increasing fresh air temperature during dehumidification are achieved.
Preferably, the outlet direction of the negative pressure fan (6) is opposite to the evaporator (7), and heat which is not completely exchanged after passing through the heat exchange core body (4) is absorbed and utilized by the evaporator (7) again, so that the energy efficiency ratio is improved.
Preferably, in the material baking process, according to the temperature and humidity requirements in the charging chamber (16), the electric fresh air door (5) and the negative pressure fan (6) are closed to form a closed structure, so that the loss of waste heat of airflow is avoided, the heating system and the dehumidifying system can be synchronously performed, and meanwhile, the dehumidifying evaporator (10) and the condenser (12) arranged in the air source heat pump (19) are used for drying and dehumidifying the material to a range with smaller water content, so that the energy conservation and emission reduction of material drying are realized.
Preferably, the control module (2) can set different drying modes according to the drying process of different materials, so as to meet the drying quality of the materials.
Compared with the prior art, the invention has the following advantages:
in the fruit and vegetable drying process, the moisture content of the materials in the early stage is large, the electric fresh air door and the negative pressure fan of the system are opened to form an open structure, more moisture in the early stage is quickly taken away by the negative pressure fan, and the materials are prevented from deteriorating due to the fact that the moisture content is large in the early stage and the dehumidification is not in time; after the moisture content of the material in the middle stage is reduced to a certain degree, the air source heat pump closes the electric fresh air door and the negative pressure fan to form a closed structure, so that the loss of the waste heat of the air flow is avoided, and meanwhile, the material is dried and dehumidified to a range with smaller moisture content by utilizing a dehumidification evaporator and a condenser which are arranged in the air source heat pump; adopt open structure when later stage water content is less, the heating hydrofuge makes material moisture content reach the requirement, and above-mentioned two kinds of modes pass through intelligent control module control, and the effectual stoving quality that improves the material has also realized the energy saving and emission reduction that the material was dried.
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, and 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 schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of the operation of embodiment 2 of the present invention.
In the figure: 1-air return inlet, 2-control module, 3-throttle plate, 4-heat exchange core, 5-electric fresh air door, 6-negative pressure fan, 7-evaporator, 8-external fan, 9-compressor, 10-dehumidification evaporator, 11-water pan, 12-condenser, 13-drain pipe, 14-air inlet, 15-lower circulating fan, 16-charging chamber, 17-material flat bed, 18-upper circulating fan and 19-air source heat pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Example 1:
the device for drying fruits and vegetables shown in figure 1 comprises a 19-air source heat pump, wherein a 1-air return opening, a 2-control module, a 3-throttle plate, a 4-heat exchange core body, a 5-electric fresh air door, a 6-negative pressure fan, a 7-evaporator, an 8-external fan, a 9-compressor, a 10-dehumidification evaporator, a 11-water pan, a 12-condenser, a 13-drain pipe and a 14-air inlet are arranged in the device, the throttle plate 3 is connected with the heat exchange core body 4, the lower end of the heat exchange core body 4 is connected with the dehumidification evaporator 10, the lower part of the dehumidification evaporator 10 is connected with the water pan 11, the lower part of the water pan 11 is connected with the drain pipe 13, and an air outlet of the negative pressure fan 6 is opposite to the evaporator 7.
Example 2:
the device for drying fruits and vegetables shown in figure 2 further comprises a charging chamber 16, wherein a lower circulating fan 15, a material flat bed 17 and an upper circulating fan 18 are arranged in the charging chamber, the charging chamber 16 is closed, heat in an air source heat pump 19 is sent to the material flat bed 17 through an air inlet 14 by the lower circulating fan 15, and wet and hot air is sent to an air return opening 1 of the air source heat pump 19 by the upper circulating fan 18 after passing through a hole of the material flat bed 17, so that a cycle is completed.
The implementation process of the invention is as follows: after the materials are loaded into the charging chamber, the water content in the early stage is large, when the unit can not meet the dehumidification requirement for a moment, the electric fresh air door 5 and the negative pressure fan 6 of the system are controlled to be opened by the control module 2 to form an open structure, more water in the early stage is quickly taken away by the negative pressure fan 6, the situation that the materials deteriorate in the early stage due to the fact that the moisture content is large and the materials cannot be dehumidified is avoided, high-temperature and high-humidity air is quickly taken away by the negative pressure fan 6, heat exchange is carried out between the air and fresh air entering the electric fresh air door 5 after the air passes through the; after the moisture content of the material in the middle period is reduced to a certain degree, the air source heat pump closes the electric fresh air door 5 and the negative pressure fan 6 to form a closed structure, so that the loss of the waste heat of the air flow is avoided, and meanwhile, the material is dried and dehumidified to a range with smaller moisture content by utilizing a dehumidification evaporator and a condenser which are arranged in the air source heat pump; adopt open structure when later stage water content is less, the heating hydrofuge makes material moisture content reach the requirement, and above-mentioned two kinds of modes are through setting up two sets of high accuracy sensors in the feed chamber with humiture signal transfer to control module 2, by the switching of above-mentioned two kinds of modes of control module 2 intelligent control, the effectual stoving quality that improves the material has also realized the energy saving and emission reduction that the material was dried.
The foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and the invention focuses on the air source heat pump to remove the heat generated by the operation of the components in the heat pump when the fresh air is supplemented, so as to prolong the service life of the components.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011272051.1A CN112229166A (en) | 2020-11-14 | 2020-11-14 | An air source heat pump opening and closing integrated downward air dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011272051.1A CN112229166A (en) | 2020-11-14 | 2020-11-14 | An air source heat pump opening and closing integrated downward air dryer |
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| Publication Number | Publication Date |
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| CN112229166A true CN112229166A (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011272051.1A Withdrawn CN112229166A (en) | 2020-11-14 | 2020-11-14 | An air source heat pump opening and closing integrated downward air dryer |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113720113A (en) * | 2021-08-24 | 2021-11-30 | 玉溪新天力农业装备制造有限公司 | Air source heat pump dryer with heat recovery function |
| CN113899188A (en) * | 2021-11-11 | 2022-01-07 | 广东海悟科技有限公司 | Drying production line and control method thereof |
| CN114087853A (en) * | 2021-11-12 | 2022-02-25 | 玉溪新天力农业装备制造有限公司 | Agricultural product drying device and using method |
| CN114992991A (en) * | 2022-05-17 | 2022-09-02 | 武汉理工大学 | Based on solar energy-air source bi-position allies oneself with thermal cycle formula sunshine stoving room |
| CN115751770A (en) * | 2022-12-08 | 2023-03-07 | 青岛海信日立空调系统有限公司 | Opening and closing integrated heat pump system |
| CN116222164A (en) * | 2022-12-26 | 2023-06-06 | 漯河市天顺制冷设备有限公司 | A mobile drying room |
| CN116518701A (en) * | 2023-07-05 | 2023-08-01 | 中建环能科技股份有限公司 | Method for improving dehumidification performance of evaporator of heat pump low-temperature drying equipment and electronic equipment |
| CN116518600A (en) * | 2023-07-05 | 2023-08-01 | 中建环能科技股份有限公司 | Control method for refrigerating performance of compressor of heat pump low-temperature drying equipment and electronic equipment |
| WO2025007305A1 (en) * | 2023-07-05 | 2025-01-09 | 中建环能科技股份有限公司 | Low-energy-consumption control method for heat pump low-temperature dryer, electronic device and storage medium |
-
2020
- 2020-11-14 CN CN202011272051.1A patent/CN112229166A/en not_active Withdrawn
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113720113A (en) * | 2021-08-24 | 2021-11-30 | 玉溪新天力农业装备制造有限公司 | Air source heat pump dryer with heat recovery function |
| CN113899188A (en) * | 2021-11-11 | 2022-01-07 | 广东海悟科技有限公司 | Drying production line and control method thereof |
| CN114087853A (en) * | 2021-11-12 | 2022-02-25 | 玉溪新天力农业装备制造有限公司 | Agricultural product drying device and using method |
| CN114992991A (en) * | 2022-05-17 | 2022-09-02 | 武汉理工大学 | Based on solar energy-air source bi-position allies oneself with thermal cycle formula sunshine stoving room |
| CN115751770A (en) * | 2022-12-08 | 2023-03-07 | 青岛海信日立空调系统有限公司 | Opening and closing integrated heat pump system |
| CN115751770B (en) * | 2022-12-08 | 2024-08-09 | 青岛海信日立空调系统有限公司 | Opening-closing integrated heat pump system |
| CN116222164A (en) * | 2022-12-26 | 2023-06-06 | 漯河市天顺制冷设备有限公司 | A mobile drying room |
| CN116518701A (en) * | 2023-07-05 | 2023-08-01 | 中建环能科技股份有限公司 | Method for improving dehumidification performance of evaporator of heat pump low-temperature drying equipment and electronic equipment |
| CN116518600A (en) * | 2023-07-05 | 2023-08-01 | 中建环能科技股份有限公司 | Control method for refrigerating performance of compressor of heat pump low-temperature drying equipment and electronic equipment |
| WO2025007305A1 (en) * | 2023-07-05 | 2025-01-09 | 中建环能科技股份有限公司 | Low-energy-consumption control method for heat pump low-temperature dryer, electronic device and storage medium |
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Application publication date: 20210115 |