Carbon dioxide modified dehumidifier and using method

Abstract

The invention relates to the technical field of dehumidifiers, and discloses a carbon dioxide modified dehumidifier which comprises a machine body, a regenerated fresh air inlet is formed in one side of the machine body, a G3 primary filter is installed on the inner wall of the regenerated fresh air inlet and used for filtering inlet air dust, a regenerated surface cooler is installed on one side of the regenerated fresh air inlet and used for cooling the regenerated fresh air inlet, and the regenerated surface cooler is used for cooling the regenerated fresh air inlet. Air subjected to regeneration surface cooling enters the carbon dioxide condenser to be condensed, a circulating pipeline is arranged on one side of the carbon dioxide condenser, an expansion valve is installed on one side of the circulating pipeline, an evaporator is installed on one side of the air inlet pipeline, and a carbon dioxide compressor is installed on one side of the circulating pipeline. By integrating the carbon dioxide condenser and the electric heating device, an efficient regeneration heating mode is achieved, energy consumption in the regeneration process is remarkably reduced, distribution of cooling capacity in all treatment stages is optimized, and the overall refrigeration efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of dehumidifiers, and in particular to a carbon dioxide modified dehumidifier and a use method thereof. Background Art

[0002] A dehumidifier is a device used to control air humidity. It is widely used in industrial manufacturing, warehousing, precision processing, electronic equipment production, food processing and other fields that require strict humidity control. Its main principle is to absorb moisture in the air through refrigeration or hygroscopic materials to reduce air humidity, thereby achieving the purpose of environmental regulation.

[0003] Traditional dehumidification equipment mostly uses a heating wheel regeneration method. The regeneration process usually relies on electric heaters to directly heat the air, which usually consumes a lot of energy to reach the required regeneration temperature. Such a design consumes extremely high energy during the regeneration stage, especially under high-temperature regeneration requirements, further increasing the operating cost of the system. In addition, due to the lack of an effective heat recovery mechanism, traditional equipment is difficult to fully utilize the heat released during the regeneration process, resulting in a waste of heat energy, low overall energy efficiency, and high operating costs.

[0004] Secondly, existing dehumidification systems face great challenges when dealing with low dew point air. Low dew point requires extremely low water vapor content in the air, but traditional systems are difficult to accurately control the regeneration air temperature, and often have difficulty maintaining a stable dehumidification effect when the ambient temperature changes greatly, resulting in the system being unable to work stably in extreme environments (such as high temperatures in summer or low temperatures in winter). This makes traditional dehumidifiers incapable of coping with high-precision humidity control situations and unable to meet the special requirements for low dew point environments.

[0005] To this end, those skilled in the art provide a carbon dioxide modified dehumidifier to solve the problems raised in the above background technology. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a carbon dioxide modified dehumidifier and a method of use, which solves the problem of high energy consumption during the operation of the existing dehumidifier.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a carbon dioxide modified dehumidifier, including a body, a regeneration fresh air inlet is installed on one side of the body, a G3 primary filter is installed on the inner wall of the regeneration fresh air inlet for filtering intake dust, a regeneration surface cooler is installed on one side of the regeneration fresh air inlet, the air passing through the regeneration surface cooler enters the carbon dioxide condenser for condensation, a circulation pipe is provided on one side of the carbon dioxide condenser, an expansion valve is installed on one side of the circulation pipe, an evaporator is installed on one side of the air intake pipe, a carbon dioxide compressor is installed on one side of the circulation pipe, and an electric heater is installed on the top of the body, and the electric heater is connected to the carbon dioxide condenser.

[0008] Preferably, a first air inlet and an air outlet are respectively provided at both ends of the machine body, a G4 primary filter is installed on one side of the first air inlet, a workshop return air grille is installed on one side of the machine body, a middle surface cooler is fixed on one side of the machine body, a rear surface cooler is installed on one side of the machine body, and a rear heater is installed on the right side of the machine body.

[0009] Preferably, a water pump is installed on the outer wall of the body, and the water pump is connected to the evaporator through a pipeline.

[0010] Preferably, a front surface cooler is installed on one side of the inner cavity of the machine body for preliminary filtration, and a medium-efficiency filter is installed on one side of the workshop return air grille for secondary filtration.

[0011] Preferably, the electric heating and post-heating are electrically connected to an external power source.

[0012] Preferably, a processing fan is installed on one side of the inner cavity of the body to form an air duct in the inner cavity of the body.

[0013] Preferably, a regeneration exhaust fan is installed on one side of the electric heater to guide the wind direction.

[0014] A method for using a carbon dioxide modified dehumidifier, according to a carbon dioxide modified dehumidifier, comprises the following steps:

[0015] S1, fresh air enters the system through the first air inlet, passes through the G4 primary filter to remove larger particles, is cooled by the front surface cooling, and is mixed with the return air introduced by the workshop return air grille, and then is further processed by the medium efficiency filter and the medium surface cooling;

[0016] S2, the cooled air is pushed by the treatment fan, the temperature is adjusted by the rear surface cooling, and then heated by the rear heating before being sent to the workshop;

[0017] S3, regeneration air enters the system from the regeneration fresh air inlet, is cooled by the G3 primary filter and regeneration surface cooler, and then is heated by the carbon dioxide condenser and electric heater;

[0018] S4. After the carbon dioxide compressor compresses the carbon dioxide refrigerant, it enters the carbon dioxide condenser to release heat and heat the regenerated air. Then, the condensed carbon dioxide is reduced in pressure by the expansion valve and enters the evaporator to absorb heat and provide refrigeration capacity.

[0019] S5. The air after regeneration treatment is discharged from the system by the regeneration exhaust fan and released to the outside through the exhaust port, while the chilled water circulation system flows between the surface cooler and the evaporator through the water pump to maintain the cooling process.

[0020] The present invention provides a carbon dioxide modified dehumidifier. It has the following beneficial effects:

[0021] 1. The present invention realizes an efficient regenerative heating method by integrating the carbon dioxide condenser and the electric heating device, significantly reduces the energy consumption during the regeneration process, optimizes the distribution of cold capacity in each processing stage, and improves the overall refrigeration efficiency.

[0022] 2. The present invention can regulate the temperature of the regenerated air to adapt it to the requirements of a low dew point environment, while maintaining stable dehumidification performance under extreme temperature conditions to meet high-demand air treatment needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the planar structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the top structure of the present invention from a top view;

[0025] Figure 3 for Figure 2 A magnified schematic diagram of point A;

[0026] Figure 4 It is a schematic diagram of the process of the present invention;

[0027] Figure 5 It is a schematic diagram of the method steps of the present invention.

[0028] Among them, 1. machine body; 2. first air inlet; 3. G4 primary filter; 4. front surface cooling; 5. workshop return air grille; 6. medium efficiency filter; 7. medium surface cooling; 8. treatment fan; 9. rear surface cooling; 10. rear heating; 11. exhaust port; 12. regeneration fresh air inlet; 13. G3 primary filter; 14. regeneration surface cooling; 15. carbon dioxide condenser; 16. electric heating; 17. regeneration exhaust fan; 18. carbon dioxide compressor; 19. expansion valve; 20. water pump; 21. evaporator. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] Please see attached Figure 1 -Attached Figure 3 The embodiment of the present invention provides a carbon dioxide modified dehumidifier, including a body 1, a regeneration fresh air inlet 12 is installed on one side of the body 1, a G3 primary filter 13 is installed on the inner wall of the regeneration fresh air inlet 12 for filtering intake dust, a regeneration surface cooler 14 is installed on one side of the regeneration fresh air inlet 12, the air passing through the regeneration surface cooler 14 enters the carbon dioxide condenser 15 for condensation, a circulation pipeline is provided on one side of the carbon dioxide condenser 15, an expansion valve 19 is installed on one side of the circulation pipeline, an evaporator 21 is installed on one side of the air intake pipeline, a carbon dioxide compressor 18 is installed on one side of the circulation pipeline, and an electric heater 16 is installed on the top of the body 1, and the electric heater 16 is connected to the carbon dioxide condenser 15.

[0032] Specifically, a regeneration fresh air inlet 12 is installed on one side of the body 1 for introducing outside air. A G3 primary filter 13 is provided on the inner wall of the regeneration fresh air inlet 12, which can effectively remove dust and particulate matter in the air to ensure the cleanliness of the air entering the system. A regeneration surface cooler 14 is connected downstream of the regeneration fresh air inlet 12. The regeneration surface cooler 14 is connected to the refrigerant pipeline and uses the refrigerant circulation to cool the regeneration air so that the air reaches a suitable temperature and humidity condition for the next step of processing.

[0033] The air treated by the regeneration surface cooling 14 enters the carbon dioxide condenser 15 for heat exchange. The high-temperature CO2 refrigerant in the carbon dioxide condenser 15 heats the air to the required temperature through heat exchange to ensure the heat supply of the regeneration process. The carbon dioxide condenser 15 is connected to the circulation pipeline. An expansion valve 19 is connected to one side of the circulation pipeline to control the flow and pressure of the CO2 refrigerant entering the evaporator 21 to achieve the decompression of the refrigerant. The evaporator 21 is connected to the chilled water pipeline to absorb cold energy and use it to cool the air, so that the condensed CO2 evaporates again and enters the circulation.

[0034] The circulation pipeline is also connected to a carbon dioxide compressor 18, which is used to compress the evaporated CO2, compress the low-pressure CO2 gas into a high-temperature and high-pressure state, and then transport it to the carbon dioxide condenser 15 for heat exchange again. An electric heater 16 is provided on the top of the body 1, and the electric heater 16 is connected to the carbon dioxide condenser 15 to further heat and regulate the air, so as to ensure that additional heat can be provided under special circumstances.

[0035] The electric heater 16 and the carbon dioxide condenser 15 work together to enable the air to reach the required high temperature. The components such as the regenerative surface cooler 14, the expansion valve 19, the evaporator 21, the compressor 18, and the carbon dioxide condenser 15 are connected through reasonable pipelines and refrigerant circulation, realizing efficient heat transfer and energy conversion within the system. This design structure effectively improves the efficiency and energy saving effect of regenerative air treatment through the synergistic effect of cooling and heating, and has strong adaptability and can meet the dehumidification needs in low dew point environments.

[0036] Please see attached Figure 1 -Attached Figure 3 A water pump 20 is installed on the outer wall of the machine body 1, and the water pump 20 is connected to the evaporator 21 through a pipeline. The electric heater 16 and the post-heater 10 are electrically connected to the external power supply.

[0037] Specifically, a water pump 20 is installed on the outer wall of the body 1, and the water pump 20 is connected to the evaporator 21 through a pipeline. The function of the water pump 20 is to promote the circulation of chilled water between the evaporator 21 and related cooling equipment, and provide the necessary cooling medium for the evaporator 21 to achieve heat transfer and temperature control inside the system. The design of the water pump 20 connected to the evaporator 21 through a pipeline allows the chilled water to flow continuously in the pipeline, thereby taking away the heat generated by the evaporator 21 during the heat absorption process, ensuring that the evaporator 21 can continuously and efficiently absorb heat from the air and reduce its temperature. In this way, the evaporator 21 plays a role in refrigeration and dehumidification in the system, ensuring that the temperature and humidity of the air decrease when passing through the evaporator 21, and providing support for the dehumidification effect of the system. At the same time, the stable operation of the water pump 20 also ensures the smooth circulation of chilled water between various cooling components, avoiding the weakening of the cooling effect or unstable system operation due to the interruption of water flow.

[0038] The top of the body 1 is also equipped with an electric heater 16 and a post-heater 10, which are electrically connected to an external power source. The electric heater 16 provides a stable heating capacity through electrical connection, and is mainly used to provide further heating for the regenerated air after it enters the carbon dioxide condenser 15, so that the air reaches a high temperature state to meet the high temperature requirements of the regenerated hygroscopic material.

[0039] The connection between the post-heating 10 and the external power supply is to provide a moderate temperature rise for the air after the air has completed the dehumidification process and has been cooled by the post-surface cooling 9, so as to ensure that the air temperature sent into the workshop meets the use requirements. The electrical connection design of the electric heating 16 and the post-heating 10 enables them to be started and adjusted according to the system control requirements, ensuring the stability and safety of the heating process.

[0040] Please see attached Figure 1 -Attached Figure 3 The first air inlet 2 and the air outlet 11 are respectively arranged at both ends of the machine body 1, a G4 primary filter 3 is installed on one side of the first air inlet 2, a workshop return air grille 5 is installed on one side of the machine body 1, a middle surface cooler 7 is fixed on one side of the machine body 1, a rear surface cooler 9 is installed on one side of the machine body 1, and a rear heater 10 is installed on the right side of the machine body 1. A regeneration exhaust fan 17 is installed on one side of the electric heater 16 to guide the wind direction.

[0041] Specifically, a first air inlet 2 and an air outlet 11 are respectively provided at both ends of the body 1 for the air to enter and exit. The first air inlet 2 is used to introduce fresh air from the outside, and a G4 primary filter 3 is installed on one side thereof. The G4 primary filter 3 performs preliminary purification on the incoming air to remove larger particles and dust to ensure the cleanliness of the air inside the system. After the treated air enters the body 1, the pollution and wear of other components inside the system can be effectively reduced. A workshop return air grille 5 is installed on one side of the body 1. The workshop return air grille 5 is used to introduce return air from part of the workshop and mix it with the external fresh air to adjust the temperature and humidity of the air and enhance the flexibility of air treatment.

[0042] In the machine body 1, the air treated by the G4 primary filter 3 flows to the middle surface cooler 7, which is fixedly installed on one side of the machine body 1 and is connected to the refrigerant system to cool the air passing through. The function of the middle surface cooler 7 is to further lower the temperature of the air and reduce the water vapor content in the air, thereby improving the dehumidification effect. Next, the air flows through the rear surface cooler 9, which is installed on the other side of the machine body 1 to further cool the air. The function of the rear surface cooler 9 is to perform secondary cooling on the already cooled air to ensure that the air reaches the required temperature and humidity requirements before being sent to the place of use.

[0043] After the cooled air passes through the rear cooling unit 9, it flows through the rear heating unit 10. The rear heating unit 10 is fixed to the right side of the body 1 and is connected to an external power source to provide a moderate temperature rise for the cooled air so as to adjust the final temperature of the air and ensure that the air sent into the use environment reaches a comfortable temperature range to avoid the environmental comfort of the use place being affected by the overcooling of the air. The rear heating unit 10 can flexibly adjust the temperature according to the control requirements of the system.

[0044] An electric heater 16 is also installed on one side of the body 1. This component is mainly used for heating the regeneration air. The location of the electric heater 16 is closely connected with the regeneration system, and can provide high-temperature air when needed during the regeneration process to assist the regeneration process of the hygroscopic material. In order to optimize the flow of the regeneration air, a regeneration exhaust fan 17 is installed on one side of the electric heater 16. The regeneration exhaust fan 17 ensures the flow direction of the regeneration air inside the body 1 through its guiding function, so that the regeneration air can circulate smoothly in the system and discharge the waste gas and moisture during the regeneration process. The guiding function of the regeneration exhaust fan 17 ensures the stability of the regeneration air flow, thereby making the regeneration process more efficient.

[0045] Please see attached Figure 1 -Attached Figure 3 A front surface cooler 4 is installed on one side of the inner cavity of the machine body 1 for preliminary filtration, and a medium efficiency filter 6 is installed on one side of the workshop return air grille 5 for secondary filtration. A processing fan 8 is installed on one side of the inner cavity of the machine body 1 to form an air duct in the inner cavity of the machine body 1.

[0046] Specifically, a front surface cooler 4 is installed on one side of the inner cavity of the machine body 1, and the front surface cooler 4 is connected to the refrigerant pipe for preliminary cooling of the fresh air. In addition to the cooling effect, the front surface cooler 4 can also remove part of the water vapor in the air through condensation, so that the air can more easily meet the expected humidity requirements in the subsequent processing process. A workshop return air grille 5 is provided on one side of the machine body 1 for introducing return air from inside the workshop. A medium efficiency filter 6 is installed on one side of the workshop return air grille 5 as a secondary filter to filter fine particles from the introduced workshop return air to ensure that the return air entering the system meets the cleanliness requirements before mixing. The setting of the medium efficiency filter 6 effectively reduces dust accumulation inside the system and extends the service life of other air treatment components.

[0047] After the fresh air is processed by the front surface cooling 4 and the return air is purified by the medium efficiency filter 6, the two air streams are mixed inside the body 1 and further guided to the processing fan 8. The processing fan 8 is fixedly installed on one side of the inner cavity of the body 1, and is mainly used to establish a stable air duct inside the body 1 to push the processed air to the downstream processing devices. The function of the processing fan 8 is to ensure that the air flows in the inner cavity of the body 1 according to the designed airflow path, enhance the air circulation and the overall dehumidification effect of the system. It can ensure that the air maintains an appropriate flow rate in each link of cooling, heating and regeneration, thereby improving the air handling capacity of the system.

[0048] Embodiment 2:

[0049] Please see attached Figure 4 -Attached Figure 5 The embodiment of the present invention provides a method for using a carbon dioxide modified dehumidifier, comprising the following steps:

[0050] S1, fresh air enters the system through the first air inlet 2, passes through the G4 primary filter 3 to remove larger particles, is cooled by the front surface cooler 4, and is mixed with the return air introduced by the workshop return air grille 5, and then passes through the medium efficiency filter 6 and the medium surface cooler 7 for further processing;

[0051] S2, the cooled air is pushed by the treatment fan 8, the temperature is adjusted by the rear surface cooling 9, and then heated by the post-heating 10 before being sent to the workshop;

[0052] S3, regeneration air enters the system from the regeneration fresh air inlet 12, is cooled by the G3 primary filter 13 and the regeneration surface cooler 14, and is then heated by the carbon dioxide condenser 15 and the electric heater 16;

[0053] S4, after the carbon dioxide compressor 18 compresses the carbon dioxide refrigerant, it enters the carbon dioxide condenser 15 to release heat and heat the regenerated air. Then, the condensed carbon dioxide is decompressed by the expansion valve 19 and enters the evaporator 21 to absorb heat and provide refrigeration capacity;

[0054] S5. The regenerated air is discharged from the system by the regeneration exhaust fan 17 and released to the outside through the exhaust port 11, while the chilled water circulation system flows between the surface cooler and the evaporator 21 through the water pump 20 to maintain the cooling process.

[0055] Embodiment 3:

[0056] With air supply volume of 50000m 3 / h dehumidifier, regeneration air volume 5000m 3 / h as an example to compare multiple parameters:

[0057] The comparison table is as follows:

[0058]

[0059]

[0060] Summarize:

[0061] By comparison, it can be seen that the "new unit" solution shows obvious energy-saving advantages in terms of rotor regeneration heating and intermediate surface cooling, significantly reducing energy consumption and cooling demand during the regeneration process, while maintaining relatively low total fan power and post-heating power. This makes the "new unit" more energy-efficient while maintaining the same air supply conditions, especially in the efficient use of regenerative surface cooling and intermediate surface cooling design. Compared with the other two solutions, although "taking outdoor 35℃ air" has a slight advantage in cooling capacity demand, its high regeneration heating capacity limits the overall energy-saving effect. The "normal cooling to 14℃ fresh air" solution has a higher load in terms of cooling capacity and fan power. Overall, the "new unit" can provide better energy-saving effects and stable performance under a variety of working conditions by optimizing regeneration and cooling design.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A carbon dioxide modified dehumidifier, comprising a body (1), characterized in that: A regeneration fresh air inlet (12) is installed on one side of the machine body (1), and a G3 primary filter (13) is installed on the inner wall of the regeneration fresh air inlet (12) for filtering intake dust. A regeneration surface cooler (14) is installed on one side of the regeneration fresh air inlet (12), and the air passing through the regeneration surface cooler (14) enters the interior of the carbon dioxide condenser (15) for condensation. A circulation pipeline is provided on one side of the carbon dioxide condenser (15), and an expansion valve (19) is installed on one side of the circulation pipeline. An evaporator (21) is installed on one side of the air intake pipeline, and a carbon dioxide compressor (18) is installed on one side of the circulation pipeline. An electric heater (16) is installed on the top of the machine body (1), and the electric heater (16) is connected to the carbon dioxide condenser (15).

2. A carbon dioxide modified dehumidifier according to claim 1, characterized in that: The machine body (1) is provided with a first air inlet (2) and an air outlet (11) at both ends thereof, a G4 primary filter (3) is installed on one side of the first air inlet (2), a workshop return air grille (5) is installed on one side of the machine body (1), a middle surface cooler (7) is fixed on one side of the machine body (1), a rear surface cooler (9) is installed on one side of the machine body (1), and a rear heater (10) is installed on the right side of the machine body (1).

3. A carbon dioxide modified dehumidifier according to claim 1, characterized in that: A water pump (20) is installed on the outer wall of the machine body (1), and the water pump (20) is connected to the evaporator (21) through a pipeline.

4. A carbon dioxide modified dehumidifier according to claim 2, characterized in that: A front surface cooler (4) is installed on one side of the inner cavity of the machine body (1) for preliminary filtering, and a medium-efficiency filter (6) is installed on one side of the workshop return air grille (5) for secondary filtering.

5. The carbon dioxide modified dehumidifier according to claim 1, characterized in that: The electric heater (16) and the post-heater (10) are electrically connected to an external power source.

6. A carbon dioxide modified dehumidifier according to claim 2, characterized in that: A processing fan (8) is installed on one side of the inner cavity of the machine body (1) and is used to form an air duct in the inner cavity of the machine body (1).

7. The carbon dioxide modified dehumidifier according to claim 1, characterized in that: A regeneration exhaust fan (17) is installed on one side of the electric heater (16) to guide the wind direction.

8. A method for using a carbon dioxide modified dehumidifier, according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, fresh air enters the system through the first air inlet (2), passes through the G4 primary filter (3) to remove larger particles, is cooled by the front surface cooler (4), and is mixed with the return air introduced by the workshop return air grille (5), and is further processed by the medium efficiency filter (6) and the medium surface cooler (7); S2, the cooled air is pushed by the treatment fan (8), the temperature is adjusted by the rear surface cooling (9), and then heated by the rear heating (10) before being sent to the workshop; S3, regeneration air enters the system from the regeneration fresh air inlet (12), is cooled by the G3 primary filter (13) and the regeneration surface cooler (14), and then is heated by the carbon dioxide condenser (15) and the electric heater (16); S4, after the carbon dioxide compressor (18) compresses the carbon dioxide refrigerant, it enters the carbon dioxide condenser (15) to release heat and heat the regenerated air. Then, the condensed carbon dioxide passes through the expansion valve (19) to reduce the pressure and enter the evaporator (21) to absorb heat and provide cooling capacity; S5. The air after regeneration treatment is discharged from the system by the regeneration exhaust fan (17) and released to the outside through the exhaust port (11), while the chilled water circulation system flows between the surface cooler and the evaporator (21) through the water pump (20) to maintain the cooling process.

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