CN219141415U - Air source heat pump drying unit - Google Patents
Air source heat pump drying unit Download PDFInfo
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- CN219141415U CN219141415U CN202223161453.1U CN202223161453U CN219141415U CN 219141415 U CN219141415 U CN 219141415U CN 202223161453 U CN202223161453 U CN 202223161453U CN 219141415 U CN219141415 U CN 219141415U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The utility model relates to an air source heat pump dryer unit, wherein a heating cavity, a dehumidifying cavity, a return air cavity and a total heat exchanger are arranged in a shell; the temperature rising cavity is communicated with an air return opening and a hot air supply opening, a condenser and a hot air blower are arranged in the temperature rising cavity, and the air return opening and the hot air supply opening are respectively arranged on the air inlet side and the air outlet side of the condenser; the evaporator is arranged in the dehumidification cavity, the return air cavity is communicated with the heating cavity, a communication port between the return air cavity and the heating cavity is arranged on the air inlet side of the condenser, and an air quantity adjusting device for adjusting the air quantity proportion passing through the evaporator is arranged at the communication port; the two ends of the hot air channel of the total heat exchanger are communicated with the return air cavity and the dehumidifying cavity, the two ends of the cold air channel are communicated with the dehumidifying cavity and the heating cavity, and air flowing in from the hot air channel flows back into the cold air channel after passing through the evaporator. The utility model can adjust the air quantity flowing through the dehumidifying evaporator, avoid the overload problem of the compressor caused by overlarge system load and ensure that the unit is always in the optimal running state.
Description
Technical Field
The utility model belongs to the technical field of drying equipment, and particularly relates to an air source heat pump drying unit.
Background
The drying and dehumidification become indispensable procedures in the production process of industries such as industry, agriculture, food and the like, the quality of products is directly affected by the drying effect, and the traditional drying mode has the problems of low intelligent degree, high energy consumption, long period, high product loss rate and the like.
The existing heat pump dryer can accurately control the parameters such as the air supply and return temperature, monitor the indoor temperature and humidity, adjust the operating frequency of the compressor, the fan and the like, finely adjust the operating state of the heat pump unit, then set the operating parameters of the unit according to the process requirements of the dried products, can quickly realize the product drying process requirements, ensure the product drying quality, and the heat pump dryer is green and efficient, thereby conforming to the current national green concept of carbon neutralization and carbon peak.
However, in the existing air source heat pump drying unit, the air in the unit is subjected to dehumidification treatment by an evaporator partially or completely, and then is heated by a condenser to continuously dry the materials. Because the air flow of the evaporator is regulated by the related devices which are not arranged in the unit, the air flow dehumidified by the evaporator is fixed, the unit cannot be changed after being shaped, and the air flow cannot be completely matched with the running state of the heat pump unit system according to the air state and the running state of the unit system when the evaporator processes the air entering the unit along with the change of the indoor working condition, so that the unit reaches the optimal running state. When the indoor return air temperature and humidity are too high, the problem that the compressor is overloaded due to the fact that the system load is too high and the evaporation temperature of the compressor is too high can exist, the dehumidification capacity of a unit is reduced, even the dehumidification capacity is lost, and the system cannot normally run.
Disclosure of Invention
The utility model mainly solves the technical problem of providing the air source heat pump dryer unit which can adjust the air quantity flowing through the dehumidifying evaporator, avoid the problem of compressor overload caused by overlarge system load and ensure that the unit is always in the optimal running state.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the air source heat pump drying unit comprises a shell and a heat pump system, wherein the heat pump system comprises a compressor, a condenser, a throttling element and an evaporator which are sequentially connected through a refrigerant pipeline, and a heating cavity, a dehumidifying cavity and a return air cavity are arranged in the shell;
the heating cavity is communicated with an air return opening and a hot air supply opening, a condenser and an air heater are arranged in the heating cavity, and the air return opening and the hot air supply opening are respectively arranged on the air inlet side and the air outlet side of the condenser;
the evaporator is arranged in the dehumidification cavity, the return air cavity is communicated with the heating cavity, a communication port between the return air cavity and the heating cavity is arranged on the air inlet side of the condenser, and an air quantity adjusting device for adjusting the air quantity proportion passing through the evaporator is arranged at the communication port;
the shell is internally provided with a total heat exchanger, the total heat exchanger comprises a hot air channel and a cold air channel, two ends of the hot air channel are respectively communicated with the return air cavity and the dehumidifying cavity, two ends of the cold air channel are respectively communicated with the dehumidifying cavity and the heating cavity, and air flowing in from the hot air channel flows back to the cold air channel of the total heat exchanger after passing through the evaporator.
Further, the return air cavity is arranged at the top in the shell, and the air quantity adjusting device is vertically arranged at one side of the return air opening.
Further, the condenser is obliquely arranged on a path between the air return opening and the air inlet side of the air heater.
Further, both sides of the condenser are respectively fixed on a side plate of the shell and a partition plate for separating the heating cavity from the dehumidifying cavity.
Further, the compressor and the throttling element are installed in the heating cavity; alternatively, the compressor and the throttling element are mounted in a compressor chamber which is separated from the warming chamber and the dehumidifying chamber by a partition.
Further, the return air inlet is arranged on the top plate of the shell, and the hot air supply outlet is arranged on the side plate of the shell.
Further, the air quantity adjusting device is an air quantity adjusting valve.
Further, the air quantity adjusting device is an electric telescopic air door mechanism.
Further, the air quantity adjusting device also comprises a temperature sensor and a humidity sensor for detecting the temperature and the humidity in the drying room, and the air quantity adjusting device adjusts the air quantity ratio passing through the evaporator according to the temperature and the humidity in the drying room.
In summary, according to the air source heat pump dryer unit provided by the utility model, the air quantity adjusting device for adjusting the air quantity proportion passing through the evaporator is added in the dryer unit, so that the air flowing through the evaporator can be adjusted in a random group running state, the aim of protecting the unit is achieved by adjusting the air quantity required to be dehumidified through the evaporator, the problem of overload of the compressor caused by overlarge system load can be avoided, and the running state of the unit is always kept in an optimal state.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort.
FIG. 1 is a schematic diagram of a dryer group according to the present utility model;
FIG. 2 is a schematic diagram of a structure of an air quantity adjusting valve according to the present utility model;
fig. 3 is a schematic diagram of a second embodiment of the air volume control valve according to the present utility model.
As shown in fig. 1 to 3, the casing 1, the top plate 11, the side plate 12, the compressor 2, the condenser 3, the throttle element 4, the evaporator 5, the temperature raising chamber 6, the dehumidification chamber 7, the return air chamber 8, the return air inlet 9, the hot air supply opening 10, the hot air blower 11, the air volume adjusting device 12, the frame 121, the blades 122, the actuator 123, the total heat exchanger 13, the hot air passage 131, the cold air passage 132, the partition 14, the liquid reservoir 15, and the gas-liquid separator 16 are provided.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1, the air source heat pump dryer unit provided by the utility model comprises a shell 1, wherein a heat pump system is installed in the shell 1, the heat pump system comprises a compressor 2, a condenser 3, a throttling element 4 and an evaporator 5 which are sequentially connected through refrigerant pipelines, a return air inlet 9 and a hot air supply inlet 10 are arranged on the shell 1, the return air inlet 9 and the hot air supply inlet 10 are communicated with the space in a drying room, and a hot air blower 11 is installed in the shell 1 corresponding to the hot air supply inlet 10.
In this embodiment, the return air inlet 9 is preferably provided on the top plate 11 of the casing 1, and the hot air supply opening 10 is preferably provided on the side plate 12 of the casing 1. Under the action of an air heater 11, air in the drying room enters the shell 1 through an air return port 9 at the top, dehumidifies through the evaporator 5 and heats the condenser 3, and then is returned to the drying room through a hot air supply port 10 at one side, and the articles in the drying room are dried by using dry high-temperature air.
In this embodiment, it is also preferable that a temperature raising chamber 6, a dehumidifying chamber 7 and a return air chamber 8 are provided in the casing 1. The heating cavity 6 is communicated with the air return opening 9 and the hot air supply opening 10, the heating cavity 6 is arranged on one side (the right side as shown in fig. 1) in the shell 1, the condenser 3 and the air heater 11 are arranged in the heating cavity 6, and the air return opening 9 and the hot air supply opening 10 are respectively arranged on the air inlet side and the air outlet side of the condenser 3. The evaporator 5 is installed in the dehumidifying chamber 7, and the dehumidifying chamber 7 and the heating chamber 6 are separated by a partition 14. The return air chamber 8 is located the air inlet side of evaporimeter 5, and return air chamber 8 and intensification chamber 6 intercommunication are separated through baffle (not marked in the figure) between return air chamber 8 and the intensification chamber 6, offer the intercommunication mouth on the baffle, and return air chamber 8 and the intercommunication mouth setting in the air inlet side of condenser 3 in the chamber 6 of intensification, are provided with air regulation device 12 in intercommunication mouth department, and air regulation device 12 is used for adjusting the proportion of the air flow that needs to dehumidify through evaporimeter 5.
In this embodiment, a total heat exchanger 13 is further disposed in the housing 1, and the total heat exchanger 13 includes a relatively independent hot air channel 131 and a relatively independent cold air channel 132. The two ends of the hot air channel 131 are respectively communicated with the return air cavity 8 and the dehumidifying cavity 7, namely the return air cavity 8 is communicated with the dehumidifying cavity 7 by the hot air channel 131. Both ends of the cold air channel 132 are respectively communicated with the dehumidifying chamber 7 and the heating chamber 6, namely, the dehumidifying chamber 7 is communicated with the heating chamber 6 by the cold air channel 132. Wherein, the outlet end of the hot air channel 131 is located at the air inlet side of the evaporator 5, and the inlet end of the cold air channel 132 is located at the air outlet side of the evaporator 5.
All or only a certain proportion of return air entering from the return air inlet 9 enters the return air cavity 8 through the air quantity adjusting device 12, then enters the dehumidifying cavity 7 after passing through the hot air channel 131 of the total heat exchanger 13, the air flowing out of the hot air channel 131 flows back to the cold air channel 132 of the total heat exchanger 13 after being evaporated and dehumidified by the evaporator 5, the air flowing out of the cold air channel 132 is heated and warmed through the condenser 3 under the action of the air heater 11, and finally flows out of the hot air supply outlet 10 to enter the drying room. The rest air which does not enter the return air cavity 8 through the air quantity adjusting device 12 is directly heated and warmed through the condenser 3 under the action of the air heater 11, and flows out from the hot air supply port 10 to enter the drying room.
In the total heat exchanger 13, the return air of the drying room exchanges heat with the cold air which is evaporated and cooled by the evaporator 5, the cold air is preheated by the return air, and the return air is pre-cooled by the cold air. And the heat efficiency of the dryer unit is improved.
Further, in the present embodiment, it is preferable that the return air chamber 8 is provided at the top of the inner space of the casing 1, and the air volume adjusting device 12 is vertically installed at one side of the return air inlet 9. The condenser 3 is obliquely arranged on the path between the air return opening 9 and the air inlet side of the air heater 11, so that the heat exchange efficiency of the condenser 3 is improved. Both sides of the condenser 3 are respectively fixed to a side plate 12 of the casing 1 and a partition plate 14 for partitioning the temperature raising chamber 6 from the dehumidifying chamber 7.
In this embodiment, the heat pump system further includes a liquid reservoir 15 and a gas-liquid separator 16, where the gas-liquid separator 16 is connected in series to the air inlet end of the compressor 2, and the liquid reservoir 15 is connected in series between the condenser 3 and the throttling element 4. It is further preferable that the compressor 2, the throttle element 4, the accumulator 15, and the gas-liquid separator 16 are all installed in the temperature raising chamber 6 below the dehumidifying chamber 7 on the condenser 3 and the air heater 11 side. In this embodiment, there is provided another embodiment in which a compressor chamber (not shown) is subdivided into the housing 1, the compressor 2, the throttling element 4, the reservoir 15 and the gas-liquid separator 16 are all installed in the compressor chamber, the compressor chamber is located below the dehumidifying chamber 7, the compressor chamber is partitioned from the dehumidifying chamber 7 by a partition 14, and the other side is partitioned from the heating chamber 6 by another partition (not shown).
In this embodiment, the air volume control device 12 preferably employs an air volume control valve, and as shown in fig. 2 and 3, the air volume control valve may employ a single-vane control valve, a multi-vane split control valve, or the like. The air quantity regulating valve comprises a frame body 121, the frame body 121 is fixed on a partition plate between a heating cavity 6 and a return air cavity 8 through a sealing flange, one or a plurality of adjustable blades 122 are arranged in the frame body 121, the blades 122 are controlled by an actuator 123, and the actuator 123 is fixedly arranged on one side of the frame body 121. The actuator 123 is connected with the controller of the unit and is uniformly controlled by the controller.
Of course, the air quantity adjusting device 12 can also adopt an electric telescopic air door mechanism, and the air door is driven by a motor to do telescopic movement, so that the air inlet area of the communication port is adjusted, and the air quantity proportion entering the evaporator 5 is adjusted.
The drying room further comprises a temperature sensor and a humidity sensor (not shown in the figure) for detecting the temperature and the humidity in the drying room, and the air quantity adjusting device 12 correspondingly adjusts the opening angle of the blades 122 according to the difference between the temperature and the humidity in the drying room and the set temperature and the humidity, so as to adjust the proportion of air which needs to flow through the evaporator 5 for dehumidification, namely, the proportion between the dehumidification air quantity and the condensation air quantity.
In this embodiment, there are two air flow paths of the dryer group:
the first path is that the return air entering from the return air inlet 9 enters the return air cavity 8 through the air quantity adjusting device 12 in all or a certain proportion, then enters the hot air channel 131 of the total heat exchanger 13, the air flowing out from the other end of the hot air channel 131 enters the dehumidifying cavity 7, then flows through the evaporator 5, the evaporator 5 cools and dehumidifies the air, the moisture in the air is removed, the dehumidified air flows back to the cold air channel 132 of the total heat exchanger 13, the air flowing out from the cold air channel 132 is heated and warmed through the condenser 3, and finally the air is sent out from the unit by the air supply 11 to enter the drying room.
The second path, except the air flowing through the air quantity adjusting device 12, the rest air is directly heated and warmed through the condenser 3, and finally is sent out from the unit by the air supply 11 to enter the drying room. By controlling the air volume control device 12, the air volume flowing through the two paths can be arbitrarily adjusted.
The air quantity flowing through the dehumidification evaporator 5 is correspondingly regulated through different temperature and humidity parameters of each stage by matching with the detection parameters of the indoor temperature and humidity sensor. When the humidity is too high, the opening angle of the blades 122 is increased, thereby increasing the amount of dehumidification air flowing through the evaporator 5, and increasing the amount of dehumidification, and in particular, when the room is at a low temperature and high humidity, the load is not large for the dryer group, and the amount of dehumidification air flowing through the dehumidification evaporator 5 is increased, thereby increasing the amount of dehumidification; when the room is in high temperature and high humidity, the load is larger for the dryer unit, if the higher dehumidification air quantity is kept, the evaporation temperature is too high, the dehumidification quantity is reduced, and even the unit cannot normally operate, so that the dehumidification air quantity needs to be adjusted, and the maximum dehumidification quantity is achieved under the condition of ensuring the safety of the unit. When the temperature and humidity are too low, the opening angle of the blade 122 is adjusted to reduce the amount of dehumidification air flowing through the evaporator 5 and reduce the amount of dehumidification.
According to the air source heat pump drying unit, the air quantity adjusting device is added in the drying unit, the proportion of the dehumidification air quantity and the condensation air quantity in the unit is adjusted, so that air flowing through the evaporator 5 can be adjusted in a random group operation state, when return air does not meet the unit operation requirement and possibly damage the unit, the problem of overload of a compressor caused by overlarge system load is avoided by adjusting the air quantity required to dehumidify the unit, different dehumidification air quantities required under the optimal operation state of the unit are met, the purpose of protecting the unit is achieved, and the operation state of the unit can be kept in the optimal state all the time.
The foregoing description is only illustrative of the preferred embodiment of the present utility model, and is not to be construed as limiting the utility model, but is to be construed as limiting the utility model to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the utility model, may be made by those skilled in the art without departing from the scope of the utility model.
Claims (9)
1. The utility model provides an air source heat pump drying unit, includes shell and heat pump system, heat pump system includes compressor, condenser, throttling element and the evaporimeter that connects gradually through the refrigerant pipeline, its characterized in that: a heating cavity, a dehumidifying cavity and a return air cavity are arranged in the shell;
the heating cavity is communicated with an air return opening and a hot air supply opening, a condenser and an air heater are arranged in the heating cavity, and the air return opening and the hot air supply opening are respectively arranged on the air inlet side and the air outlet side of the condenser;
the evaporator is arranged in the dehumidification cavity, the return air cavity is communicated with the heating cavity, a communication port between the return air cavity and the heating cavity is arranged on the air inlet side of the condenser, and an air quantity adjusting device for adjusting the air quantity proportion passing through the evaporator is arranged at the communication port;
the shell is internally provided with a total heat exchanger, the total heat exchanger comprises a hot air channel and a cold air channel, two ends of the hot air channel are respectively communicated with the return air cavity and the dehumidifying cavity, two ends of the cold air channel are respectively communicated with the dehumidifying cavity and the heating cavity, and air flowing in from the hot air channel flows back to the cold air channel of the total heat exchanger after passing through the evaporator.
2. An air source heat pump dryer set as in claim 1 wherein: the air return cavity is arranged at the top in the shell, and the air quantity adjusting device is vertically arranged at one side of the air return opening.
3. An air source heat pump dryer set as in claim 1 wherein: the condenser is obliquely arranged on a path between the air return opening and the air inlet side of the air heater.
4. An air source heat pump dryer set as in claim 1 wherein: the both sides of condenser are fixed respectively on the curb plate of shell and the baffle that is used for separating the chamber of rising temperature and dehumidification chamber.
5. An air source heat pump dryer set as in claim 1 wherein: the compressor and the throttling element are arranged in the heating cavity; alternatively, the compressor and the throttling element are mounted in a compressor chamber which is separated from the warming chamber and the dehumidifying chamber by a partition.
6. An air source heat pump dryer set as in claim 1 wherein: the return air inlet is arranged on the top plate of the shell, and the hot air supply outlet is arranged on the side plate of the shell.
7. An air source heat pump dryer set as in claim 1 wherein: the air quantity adjusting device is an air quantity adjusting valve.
8. An air source heat pump dryer set as in claim 1 wherein: the air quantity adjusting device is an electric telescopic air door mechanism.
9. An air source heat pump dryer set according to any one of claims 1-8, wherein: the air quantity adjusting device adjusts the air quantity ratio passing through the evaporator according to the temperature and the humidity in the drying room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223161453.1U CN219141415U (en) | 2022-11-28 | 2022-11-28 | Air source heat pump drying unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223161453.1U CN219141415U (en) | 2022-11-28 | 2022-11-28 | Air source heat pump drying unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219141415U true CN219141415U (en) | 2023-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223161453.1U Active CN219141415U (en) | 2022-11-28 | 2022-11-28 | Air source heat pump drying unit |
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| CN (1) | CN219141415U (en) |
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- 2022-11-28 CN CN202223161453.1U patent/CN219141415U/en active Active
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