CN111879071A - Air-source heat pump drying and dehumidifying cycle all-in-one machine - Google Patents

Abstract

The invention provides an air-energy heat pump drying and dehumidifying cycle integrated machine. The drying area is divided into a degassing area, a material area and a heat exhaust area; the equipment area is divided into a top moisture exhaust area, a tail gas exhaust area and a heating area. There is an exhaust channel between the moisture exhaust area and the heat exhaust area, the evaporator is arranged on the exhaust channel, an electric fan assembly is arranged between the moisture exhaust area and the exhaust exhaust area, and an exhaust exhaust is arranged on the outside of the bottom of the exhaust channel. Window; between the bottom of the material area without the drying tray and the heating area, there is a heating air window, a perfusion fan is installed on the heating air window, and a condenser is arranged outside the perfusion fan; there is an air inlet window on the outside of the equipment area , the fresh air introduced by the intake window flows through the condenser, and after being heated by the condenser, it is input into the material area through the perfusion fan. At the same time, there is a return air outlet at the bottom. During the cooling process, the low temperature hot air flow passes through the return air outlet to replace the high temperature hot air in the material area. The closed drying dehumidification and cooling are realized, and the heat recovery of the exhaust gas is realized in a small space, which greatly reduces the energy loss and improves the energy utilization rate; the drying process runs automatically and has multiple safety protection functions.

Description

An air-energy heat pump drying, dehumidifying and circulating integrated machine

technical field

The invention relates to the field of drying equipment, in particular to an air-energy heat pump drying, dehumidifying and circulating integrated machine.

Background technique

Dryers have a lot of demand in many fields. Different application fields and different items have different needs for dryers. Different dryers need to be designed in combination with different products to be dried. At the same time, the dryer is a product with high energy consumption, and when it is used in production, it generally needs to work continuously, so it has higher requirements for energy efficiency. . Figure 1 is the distribution diagram of some components of the cylindrical heat pump dryer. The overall body adopts a cylindrical shape, which mainly includes a cylindrical shell 1, a base 6, a compressor unit, a fan 9, a control electric box 8, a tray 4, an expansion valve and a fan The protective net 2, the base is set at the bottom of the cylindrical shell, the fan net 2 is set on the top of the cylindrical shell 1, the tray 4 divides the cylindrical shell 1 into a heating cavity and a material cavity, and the compressor unit is set in the heating In the cavity, the material cavity is used to place the items to be dried; the compressor unit includes a compressor 7, an evaporator 5 and a condenser 10, the evaporator is arranged along the periphery of the cylindrical shell, and the condenser is arranged in the middle of the cylindrical shell , that is, the evaporator 5, the evaporator 5 and the condenser 10 are separated by a partition. The tray is a perforated sieve plate, and the condenser 10 is arranged below the perforated sieve plate, and there is a connecting air channel between the perforated sieve plate; a fan bracket 3 is arranged above the tray, and the fan is fixed on the fan bracket. When the condenser 10 is working, the surrounding air is heated, the materials to be dried are arranged on the perforated sieve plate, the fan 9 is controlled to work, the hot air prepared by the condenser 10 is extracted upward, and the perforated sieve plate is used to realize the heating of the surrounding air. The material on the sieve plate is heated, and the hot and humid air generated after heating is further discharged to the outside through the fan guard to realize the heating of the article; the use of perforated sieve plate is conducive to the uniform distribution of high-temperature air, and realizes The items to be dried are heated evenly. However, this dryer has the following defects due to the limitation of the volume and space of the integrated machine itself. The exhaust gas generated during the drying process is directly discharged, and the excess heat in the exhaust gas cannot be recovered, so the overall energy efficiency of the product is not high; drying The product is exposed in the air, and it is easy to reverse moisture absorption after drying, which affects the quality of the product; at the same time, this dryer is only suitable for drying a small amount or a small batch of drying needs. If it is not suitable to build a drying room, it needs a drying equipment with good drying quality and high energy efficiency that is suitable for slightly larger drying needs.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is how to provide a drying method suitable for larger batches of articles, with good drying quality and no moisture absorption, and at the same time realizing exhaust gas treatment and waste heat recovery and utilization on a small integrated machine.

In order to solve the above problems, the present invention provides an air-energy heat pump drying, dehumidifying and circulating integrated machine, which includes an integral closed box body, and the box body is divided into a drying area and an equipment area on the left and right sides by a hollow partition. The drying area It is divided into a bottom air-discharging area and a material area in the middle by a partition plate. The middle and upper part of the material area is provided with a drying tray, and the top is an vacant heat exhaust area; the equipment area is divided by the partition plate. The moisture removal area at the top, the exhaust gas exhaust area in the middle and the heating area at the bottom, the position of the moisture removal area is the same as that of the heat removal area, and an exhaust channel is arranged between the humidity removal area and the heat removal area, The evaporator is arranged on the exhaust passage, an electric fan assembly for downward drafting is arranged on the partition between the moisture removal area and the exhaust gas exhaust area, and an exhaust gas window is arranged on the outer side of the bottom of the exhaust passage; in the material area There is a heat intake air window between the bottom of the device without drying tray and the heating area, the heat intake air window is provided with a perfusion fan, and the outer side of the perfusion fan is provided with a condenser; the outside of the equipment area is provided with an air intake window, The fresh air introduced by the intake window flows through the condenser, and after being heated by the condenser, it is input into the material area through the perfusion fan. At the same time, the fresh air flow introduced by the intake window, when cooling, replaces the high temperature hot air in the material area with the low temperature hot air.

The air-energy heat pump drying, dehumidifying and circulating integrated machine is characterized in that an electric heating component is also provided on the top of the heat exhaust area.

The air-energy heat pump drying, dehumidifying and circulating integrated machine is characterized in that the compressor unit is arranged at the bottom of the heating area, and the refrigerant pipes connecting the evaporator, the compressor unit and the condenser are arranged in the hollow partition, and the hollow The partitions are made of insulating material.

The air-energy heat pump drying, dehumidifying and circulating integrated machine is characterized in that a drain pan is arranged at the bottom of the air placement area, and the drain port on the evaporator is communicated with the drain pan through a drain pipe.

The air-energy heat pump drying, dehumidifying and circulating integrated machine is characterized in that the drying tray is a detachable drying tray with two or more layers.

The air-energy heat pump drying, dehumidifying and circulating integrated machine is characterized in that a draft fan is provided on the connection window between the equipment area and the air placement area.

The air-energy heat pump drying, dehumidifying and circulating integrated machine is characterized in that it includes an intelligent control module, and the intelligent control module is provided with at least a drying mode and a cooling mode. If the humidity of the material is greater than the preset threshold, the control will run in the drying mode; when the humidity of the material to be dried is less than or equal to the preset threshold, the control will run in the cooling mode.

The air-energy heat pump drying, dehumidifying and circulating integrated machine is characterized in that the drying mode controls the high-frequency operation of the compressor unit, closes the induced draft fan, controls the opening of the electric fan assembly and the perfusion fan, and realizes the introduction from the air inlet window. The fresh air flows through the condenser, and the high-temperature and high-pressure heating agent condenses in the condenser to release heat, heats the newly introduced fresh air into high-temperature drying gas, and is input into the material area under the action of the perfusion fan to realize the drying effect on the drying tray. The material is heated, and the heated medium-temperature and high-humidity gas passes through the evaporator arranged on the side of the bottom to provide a heat source for the evaporation of the refrigerant in the evaporator. The moisture in the medium-temperature and high-humidity gas condenses and is discharged through the exhaust gas window.

The air-energy heat pump drying, dehumidifying and circulating integrated machine is characterized in that in the cooling mode, the compressor unit is controlled to gradually reduce the operating frequency, and the induced draft fan is turned on at the same time, and the electric fan assembly and the perfusion fan are controlled to be turned on, so as to realize the control of the air intake window. The fresh air is introduced, and part of it flows through the condenser to gradually reduce the temperature of the fresh air input to the material area; at the same time, the low-temperature fresh air is introduced into the discharge area through the induced draft fan, so as to gradually reduce the temperature of the material in the material room to the set temperature range.

The air energy heat pump drying and dehumidifying cycle integrated machine is characterized in that in the drying mode, the electric heating component is also turned on, so as to increase the temperature of the medium-temperature and high-humidity gas, accelerate the evaporation of water vapor on the material, and relieve the upper and lower layers. There is a problem of inconsistent drying degree; at the same time, the heat generated by the electric heating component is recycled through the evaporator.

The implementation of the present invention has the following beneficial effects: closed drying, dehumidification and cooling are realized, no exhaust gas waste heat discharge, no reverse moisture absorption, and at the same time, the heat recovery of the exhausted exhaust gas is cleverly realized in a small space range, which greatly reduces the The energy consumption is improved, and the energy utilization rate is improved; the whole drying process runs automatically, and it is equipped with multiple safety protection functions, which greatly facilitates the use of users. The overall product has a compact structure, easy disassembly and assembly, and is more convenient for after-sales maintenance and maintenance. The whole machine is light and easy to move, which can meet the installation of different occasions. The price of the whole machine is low, the investment is small, and the scope of popularization is wide. It can be used for commercial and civilian use, and can be adjusted in a small amount and a large amount, and is suitable for drying a large amount of products.

Description of drawings

Fig. 1 is the part distribution diagram of the cylinder heat pump dryer;

2 is an overall schematic diagram of a specific embodiment of an air-energy heat pump drying, dehumidifying and circulating integrated machine;

3 is a schematic diagram of a specific embodiment of an air-energy heat pump drying, dehumidifying and circulating integrated machine after opening the door panel;

4 is an exploded view of a specific embodiment of an air-energy heat pump drying, dehumidifying and circulating integrated machine;

Figure 5 is a schematic diagram of the working process of the air-energy heat pump drying, dehumidifying and circulating integrated machine.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Fig. 2 is an overall schematic diagram of a specific embodiment of an air-energy heat pump drying and dehumidifying integrated machine; Fig. 3 is a schematic diagram after opening the door panel of a specific embodiment of an air-energy heat pump drying and dehumidifying integrated machine; Fig. 4 is an air-energy heat pump drying and dehumidifying cycle An exploded diagram of a specific embodiment of an all-in-one machine. Figure 5 is a schematic diagram of the working process of the air-energy heat pump drying, dehumidifying and circulating integrated machine. The air-energy heat pump drying, dehumidifying and circulating integrated machine mainly includes the rear panel assembly B1, the top cover plate B2, the drying tray B3, the right inner tray lining plate B4, the right Side panel assembly B5, electric heating assembly B6, water tray B7, front door panel B8, wire controller B9, left front panel assembly B10, compressor B11, base B12, electric control box B13, compressor base B14, lower left side panel assembly B15, left upper panel assembly B16, condenser B17, perfusion fan B18, left inner tray liner B19, electric fan assembly B20, evaporator B21, fresh air filter B22.

The box body mainly includes rear panel assembly B1, top cover B2, right panel assembly B5, electric heating assembly B6, front door panel B8, left front panel assembly B10, base B12, left lower side panel assembly B15, left upper panel assembly B16; box body The box body is divided into a drying area and an equipment area on the left and right by the hollow partition plate. The drying area is divided into the bottom air placement area A5 and the middle material area A3 by the partition plate. The middle and upper part of the material area is provided with a drying area. Dry tray, the top is the vacant heat exhaust area A1; the equipment area is divided into the moisture exhaust area A2 at the top, the exhaust gas exhaust area A4 at the middle, and the heating area A6 at the bottom. There is an exhaust channel between the hot air areas, the evaporator is arranged on the exhaust channel, the separator between the moisture removal area and the exhaust gas exhaust area is provided with an electric fan assembly for downward drafting, and the bottom of the exhaust channel is provided with an electric fan assembly. An exhaust gas window is arranged on the outside; a heat inlet air window is arranged between the position without drying tray at the bottom of the material area and the heating area, and a perfusion fan is arranged on the heat inlet air window, and a condenser is arranged on the outside of the perfusion fan; The outside of the equipment area is provided with an air intake window. The fresh air introduced by the air intake window flows through the condenser, and after being heated by the condenser, it is input into the material area through the perfusion fan.

A compressor seat B14 is arranged on the base B12, and the compressor B11 is fixed on the compressor seat B14; a plurality of drying trays B3 are arranged on the material area, which are detachably arranged on the right inner tray lining board B4 and the left inner tray lining board On the B19. The quantity and spacing of drying trays B3 can be adjusted according to the quantity and volume of materials.

The outer side of the bottom of the exhaust passage is provided with an exhaust gas window, and the purpose of setting the exhaust gas window at this position instead of direct discharge is to further reduce the temperature of the exhaust gas from the exhaust gas window. Prevent or reduce the problem of condensation on the air outlet, especially when the outside temperature is low.

You can choose to set the intelligent control module on the electric control box or the wire controller. The intelligent control module has at least a drying mode and a cooling mode. By detecting the humidity of the material to be dried, when the humidity of the material to be dried is greater than the preset value When the humidity of the material to be dried is less than or equal to the preset threshold, the control will run in the cooling mode. Of course, there is generally a manual mode, which can manually set the running mode, the drying temperature and the final drying degree.

In the drying mode, control the high-frequency operation of the compressor unit, turn off the induced draft fan, and control the opening of the electric fan assembly and the perfusion fan, so as to introduce fresh air from the air intake window and flow through the condenser. The high temperature and high pressure heating agent is generated in the condenser Condensation releases heat, heats the newly introduced fresh air into high-temperature drying gas, and enters it into the material area under the action of the perfusion fan to heat the materials on the drying tray. The heated medium-temperature and high-humidity gas passes through the bottom side The evaporator provides a heat source for the evaporation of the refrigerant in the evaporator, and the moisture in the medium-temperature and high-humidity gas is condensed and discharged through the exhaust gas window.

Because when the drying meets the requirements, the product cannot be quickly heated and cooled, otherwise the product quality will be greatly affected. Therefore, the cooling mode is set, the compressor unit is controlled to gradually reduce the operating frequency, the induced draft fan is turned on at the same time, and the electric fan assembly and the perfusion fan are controlled to be turned on, so that fresh air is introduced from the intake window, and part of it flows through the condenser, gradually reducing the input to the material area. At the same time, low-temperature fresh air is introduced into the ventilation area through the induced draft fan, so as to gradually reduce the material temperature in the material room to the set temperature range.

Since the multi-layer drying tray B3 is used, the heated hot air is fed from the bottom, so there must be that with the rise of the level, the temperature gradually becomes lower and the water vapor becomes larger. In the low temperature state, the water vapor is not easily volatilized, and the drying effect is not good. Therefore, the electric heating components are creatively added to increase the temperature of the medium-temperature and high-humidity gas, which also accelerates the evaporation and dehumidification of the water vapor in the air at the top, and then It can also speed up the rise of the high-humidity and high-temperature gas in the lower layer, speed up the drying speed of the material as a whole, and alleviate the problem of inconsistent drying degree between the upper and lower layers; at the same time, the heat generated by the electric heating component is recycled through the evaporator.

The air energy heat pump drying and dehumidifying cycle integrated machine solves the problems of water vapor generated during the drying process, waste of excess heat, turbid airflow in the sealed space, and excess water vapor cannot be discharged or replaced. In operation, it is only necessary to open the front door panel for material replacement, and there are multiple universal wheel supports at the bottom, which can facilitate the user to move. And has the following advantages:

1. It adopts closed drying and dehumidification method, no exhaust gas and waste heat emission, no noise pollution, and is a high environmental protection product.

2. The drying temperature is 15~120℃, and the cold/hot air drying mode can fully meet the drying of various aquatic products, replacing the traditional steam, electric heating, and hot air drying.

3. Improve the drying quality of aquatic products, and the color and gloss of the products reach high-quality standards, which are better than the sun drying method.

4. The drying process reaches the first-class sanitary condition standard, and the product is fully suitable for export grade requirements.

5. The advanced design of ventilation and air intake dehumidification system can meet the requirements of ventilation and ventilation and stable drying conditions, and the dryer is energy-saving.

6. Using the principle of high temperature heat pump for steam condensation heat recovery, no waste heat discharge, saving operating costs, more than 40% of the cost compared with coal-fired, and more than 60% of the cost compared with fuel and electric heating.

7. Compared with the traditional dehumidifier plus air conditioner, it can save energy by more than 50% and shorten the drying cycle.

8. Advanced drying technology and design drying room, intelligent automatic control system. According to the product setting different temperature program curves (variable temperature drying), the drying conditions are stable, uniform and good quality.

9. The regenerative circulation heat pump dehumidification method is adopted (the dehumidification effect is more than 30% greater than that of the ordinary heat pump dehumidification dryer), which has superior performance under high temperature and low humidity conditions and shortens the drying cycle of the product.

10. Easy to use and manage: The equipment does not need full-time manual management and runs fully automatically.

11. Set up multiple safety protection functions: phase sequence protection, phase loss protection, overload protection, high voltage protection, low voltage protection, etc.

What is disclosed above is only one embodiment of the present invention, of course, it cannot limit the scope of rights of the present invention. Those of ordinary skill in the art can understand all or part of the process of realizing the above embodiment, and follow the claims of the present invention. The equivalent changes made still belong to the scope covered by the invention.

Claims (10)

1. An air energy heat pump drying and dehumidifying cycle all-in-one machine comprises an integral closed box body, wherein the box body is divided into a drying area and an equipment area by a hollow partition plate, the drying area is divided into a gas containing area at the bottom and a material area in the middle by the partition plate, a drying tray is arranged at the middle upper part of the material area, and the top is an empty heat exhausting area; the equipment area is divided into a dehumidifying area at the top, a tail gas exhaust area at the middle and a heating area at the bottom by a partition board, the position of the dehumidifying area is consistent with that of the heat exhaust area, an exhaust channel is arranged between the dehumidifying area and the heat exhaust area, an evaporator is arranged on the exhaust channel, an electric fan assembly for exhausting air downwards is arranged on a partition board between the dehumidifying area and the tail gas exhaust area, and a tail gas exhaust window is arranged on the outer side of the bottom of the exhaust channel; a hot air inlet window is arranged between the position, without the drying tray, at the bottom of the material area and the heating area, a perfusion fan is arranged on the hot air inlet window, and a condenser is arranged outside the perfusion fan; the outside of the equipment area is provided with an air inlet window, fresh air introduced by the air inlet window flows through the condenser, heated by the condenser and input into the material area through the perfusion fan, and meanwhile, the fresh air introduced by the air inlet window replaces high-temperature hot air in the material area when cooled.

2. The air-source heat pump drying and dehumidifying cycle all-in-one machine as claimed in claim 2, wherein an electric heating assembly is further disposed on a top of the exhaust heat area.

3. The air-source heat pump drying and dehumidifying cycle all-in-one machine as claimed in claim 1, wherein the compressor unit is disposed at the bottom of the heating zone, and refrigerant pipes connected between the evaporator and the compressor unit and between the evaporator and the condenser are disposed in a hollow partition plate made of a heat insulating material.

4. The air-source heat pump drying and dehumidifying cycle all-in-one machine as claimed in claim 3, wherein a drain pan is disposed at the bottom of the air accommodating region, and a drain port on the evaporator is communicated with the drain pan through a drain pipe.

5. The all-in-one machine of the air-source heat pump drying, dehumidifying and circulating of claim 4 is characterized in that the drying tray is a drying tray with more than 2 layers and is detachably arranged.

6. The air-source heat pump drying and dehumidifying cycle all-in-one machine as claimed in claim 5, wherein an induced draft fan is disposed on a connecting window between the equipment area and the air accommodating area.

7. The air-source heat pump drying and dehumidifying cycle all-in-one machine of claim 6, which is characterized by comprising an intelligent control module, wherein the intelligent control module is at least provided with a drying mode and a cooling mode, and when the humidity of the material to be dried is detected to be greater than a preset threshold value, the operation in the drying mode is controlled; and when the humidity of the materials to be dried is less than or equal to a preset threshold value, controlling the materials to be dried to operate in a cooling mode.

8. The air-source heat pump drying and dehumidifying cycle all-in-one machine as claimed in claim 7, wherein in the drying mode, the compressor unit is controlled to operate at high frequency, the induced draft fan is turned off, the electric fan assembly and the perfusion fan are controlled to be turned on, fresh air is introduced from the air inlet window and flows through the condenser, the high-temperature high-pressure heating agent condenses in the condenser to release heat, the newly introduced fresh air is heated to high-temperature dry gas, the high-temperature dry gas is input into the material area under the action of the perfusion fan to heat the material on the drying tray, the heated medium-temperature high-humidity gas provides a heat source for evaporation of a refrigerant in the evaporator through an evaporator arranged on the side edge of the bottom, and moisture in the high-temperature high-humidity gas condenses and is discharged through the exhaust window.

9. The air-source heat pump drying and dehumidifying cycle all-in-one machine as claimed in claim 8, wherein in the cooling mode, the compressor unit is controlled to gradually reduce the operating frequency, the induced draft fan is turned on, and the electric fan assembly and the perfusion fan are controlled to be turned on, so that fresh air is introduced from the air inlet window, part of fresh air flows through the condenser, and the temperature of the fresh air input to the material area is gradually reduced; meanwhile, low-temperature fresh air is introduced into the air placing area through the induced draft fan, so that the temperature of the materials in the material room is gradually reduced to a set temperature range.

10. The air-source heat pump drying and dehumidifying cycle all-in-one machine of claim 9 is characterized in that in a drying mode, an electric heating assembly is additionally started, so that the temperature of medium-temperature high-humidity gas is increased, the evaporation of water vapor on materials is accelerated, and the problem of inconsistent drying degrees of an upper layer and a lower layer is solved; meanwhile, the heat generated by the electric heating assembly is recycled through the evaporator.

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