Centralized carbon dioxide cold and heat combined supply dehumidifier

Abstract

The utility model relates to a centralized carbon dioxide cold and heat combined supply dehumidifier which comprises at least two machine bodies arranged in parallel, cold and heat combined supply equipment is installed outside the machine bodies, and a plurality of compressors arranged in parallel, a first condenser, a heat regenerator, an evaporator, a circulating water pump and a circulating oil pump are installed in the cold and heat combined supply equipment. Refrigerants generated by the multiple compressors sequentially enter the heat regenerator and the evaporator through the first condenser, the refrigerants obtained after expansion evaporation circulate to the multiple compressors through the heat regenerator, the circulating water pump is used for circulating frozen inlet water and frozen return water connected to the evaporator, and a second heat exchanger communicates with the interior of an air supply pipeline of the machine body; the inner end of an air return pipeline of the machine body is communicated with a third heat exchanger; and heat conduction oil of the circulating oil pump passes through the first condenser, sequentially passes through the second heat exchanger and the third heat exchanger of each machine body and a fourth heat exchanger arranged on the machine body and is recirculated to the first condenser. The heat distribution of the heating section can be flexibly adjusted, and the requirements of different working conditions can be met.

Description

Technical Field

[0001] This utility model relates to the field of dehumidifier technology, specifically to a centralized carbon dioxide combined cooling and heating dehumidifier. Background Technology

[0002] A dehumidifier is a device used to control air humidity. It is widely used in industrial manufacturing, warehousing, precision machining, electronic equipment production, food processing, and other fields requiring strict humidity control. Its main principle is to absorb moisture from the air through refrigeration or moisture-absorbing materials, thereby reducing air humidity and achieving environmental regulation.

[0003] Existing centralized heating systems mostly rely on a single compressor to drive the refrigerant circulation. Although they can achieve basic functions, they suffer from insufficient flexibility in heat distribution. Traditional dehumidifier systems directly heat the regeneration and post-heating sections using electric heaters or steam, making it difficult to dynamically distribute heat according to actual needs.

[0004] Therefore, those skilled in the art have designed a centralized carbon dioxide combined cooling and heating dehumidifier to solve the problem that the heat distribution of the heating section of existing dehumidifiers is inflexible and cannot meet the needs of different operating conditions. Summary of the Invention

[0005] To address the problems in the background technology, this utility model proposes a centralized carbon dioxide combined cooling and heating dehumidifier. This utility model can flexibly adjust the heat distribution of the heating section to meet the needs of different working conditions.

[0006] To solve the above problems, this utility model adopts the following technical solution: a centralized carbon dioxide combined cooling and heating dehumidifier, comprising at least two units connected in parallel, each unit having an air inlet and an air outlet installed on both sides, a G4 primary filter installed on one side of the air inlet, and the air outlet connected to an air supply duct. A regeneration exhaust fan is also provided at the front regeneration outlet of each unit, and a regeneration intake fan is provided at the regeneration duct at the top of each unit. A combined cooling and heating system is installed outside the unit, and the combined cooling and heating system contains multiple compressors, a first condenser, a regenerator, an evaporator, a circulating water pump, and a circulating oil pump connected in parallel. The high-temperature, high-pressure carbon dioxide refrigerant generated by the multiple compressors passes through the first condenser and sequentially enters the regenerator and the evaporator. After expansion and evaporation, the carbon dioxide refrigerant circulates through the regenerator to the multiple compressors. The circulating water pump is used to circulate the chilled water inlet and chilled water return connected to the evaporator. The air supply duct of the machine body is connected to a second heat exchanger, and the inner end of the return air duct of the machine body is connected to a third heat exchanger. The heat transfer oil of the circulating oil pump passes through the first condenser and sequentially through the second and third heat exchangers of each of the machine bodies, and a fourth heat exchanger located on the machine body before circulating back to the first condenser.

[0007] Furthermore, both the second and third heat exchangers are equipped with electric heaters on one side, and these electric heaters are electrically connected to an external power source.

[0008] Furthermore, a post-heater is provided inside the machine body on one side corresponding to the fourth heat exchanger, and the post-heater is electrically connected to an external power source.

[0009] Furthermore, a front surface cooler is fixedly installed on the side of the machine body near the air inlet, and a middle surface cooler is fixedly installed on the side of the machine body near the air outlet.

[0010] Furthermore, a first processing fan is provided in the body between the front surface cooler and the G4 primary filter, and a second processing fan is provided in the body between the front surface cooler and the middle surface cooler. The first processing fan and the second processing fan are used to form an air duct in the body.

[0011] Furthermore, an F8 medium-efficiency filter is provided between the front surface cooler and the second processing fan, and the F8 medium-efficiency filter is used for secondary filtration.

[0012] Furthermore, an expansion valve is provided between the regenerator and the evaporator.

[0013] Furthermore, a workshop return air grille is provided on the machine body corresponding to the return air duct.

[0014] Furthermore, the combined cooling and heating equipment is also equipped with an oil storage tank, which is used to buffer the oil volume of the circulating oil pump.

[0015] The beneficial effects of this utility model are as follows: This utility model optimizes the refrigerant preheating and expansion process through the design of carbon dioxide refrigerant circulation and regenerator, thereby improving the overall energy efficiency of the system. Through the design of multiple compressors in parallel, the number of compressors can be flexibly started, stopped, or increased or decreased according to actual heating needs, avoiding efficiency loss when a single compressor is running at low load and achieving dynamic matching of energy consumption. By replacing long-distance high-pressure refrigerant transport pipelines with heat transfer oil circulation, the demand for high-pressure materials is reduced. In addition, the heat transfer oil indirectly supplies heat to the heating part of the dehumidifier, and the heating amount of the corresponding part can be adjusted by controlling the oil volume of different pipelines, making heat regulation more flexible. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the planar structure of the present invention;

[0018] Figure 2 This is a top view of the top structure of this utility model;

[0019] Figure 3 This is a flowchart illustrating the present invention.

[0020] 1. Main unit; 2. Air inlet; 3. Air outlet; 4. G4 primary filter; 5. Regeneration air inlet fan; 6. Combined cooling and heating system; 7. Second heat exchanger; 8. Return air duct; 9. Third heat exchanger; 10. Fourth heat exchanger; 11. Electric heating; 12. Post-heating; 13. Front surface cooler; 14. Middle surface cooler; 15. First processing fan; 16. Second processing fan; 17. F8 medium-efficiency filter; 18. Workshop return air grille. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This invention optimizes the refrigerant preheating and expansion process through carbon dioxide refrigerant circulation and regenerator design, thereby improving the overall energy efficiency of the system. The parallel design of multiple compressors allows for flexible start / stop or adjustment of the number of compressors based on actual heating needs, avoiding efficiency losses during low-load operation of a single compressor and achieving dynamic energy matching. The use of heat transfer oil circulation replaces long-distance, high-pressure refrigerant delivery pipelines, reducing the need for high-pressure materials. Furthermore, the heat transfer oil indirectly supplies heat to the dehumidifier's heating section, and the heating capacity can be adjusted by controlling the oil volume in different pipelines, making heat regulation more flexible.

[0023] Specifically, such as Figures 1 to 3As shown, a centralized carbon dioxide combined cooling and heating dehumidifier includes at least two units 1 connected in parallel. Each unit 1 has an air inlet 2 and an air outlet 3 installed on both sides. A G4 primary filter 4 is installed on one side of each air inlet 2. The air outlet 3 is connected to an air supply duct. A regeneration exhaust fan is also provided at the front regeneration outlet of each unit 1. A regeneration intake fan 5 is provided at the regeneration air duct at the top of each unit 1. A combined cooling and heating device 6 is installed outside each unit 1. The combined cooling and heating device 6 contains multiple compressors, a first condenser, a regenerator, an evaporator, a circulating water pump, and a circulating oil pump connected in parallel. The multiple compressors generate... The high-temperature, high-pressure carbon dioxide refrigerant passes through the first condenser and sequentially enters the regenerator and the evaporator. After expansion and evaporation, the carbon dioxide refrigerant circulates through the regenerator to multiple compressors. The circulating water pump is used to circulate the chilled water inlet and chilled water return connected to the evaporator. The air supply duct of the machine body 1 is connected to a second heat exchanger 7. The inner end of the return air duct 8 of the machine body 1 is connected to a third heat exchanger 9. The heat transfer oil of the circulating oil pump passes through the first condenser and sequentially through the second heat exchanger 7 and the third heat exchanger 9 of each machine body 1, and then through the fourth heat exchanger 10 provided on the machine body 1 before circulating back to the first condenser.

[0024] Furthermore, an electric heater 11 is connected to one side of both the second heat exchanger 7 and the third heat exchanger 9, and the electric heater 11 is electrically connected to an external power source.

[0025] Furthermore, a post-heater 12 is provided inside the body 1 on one side corresponding to the fourth heat exchanger 10, and the post-heater 12 is electrically connected to an external power source.

[0026] Furthermore, a front surface cooler 13 is fixedly installed on the side of the body 1 near the air inlet 2, and a middle surface cooler 14 is fixedly installed on the side of the body 1 near the air outlet 3.

[0027] Furthermore, a first processing fan 15 is provided in the body 1 between the front surface cooler 13 and the G4 primary filter 4, and a second processing fan 16 is provided in the body 1 between the front surface cooler 13 and the middle surface cooler 14. The first processing fan 15 and the second processing fan 16 are used to form an air duct in the body 1.

[0028] Furthermore, an F8 medium-efficiency filter 17 is provided between the front surface cooler 13 and the second processing fan 16, and the F8 medium-efficiency filter 17 is used for secondary filtration.

[0029] Furthermore, an expansion valve is installed between the regenerator and the evaporator. The high-temperature, high-pressure carbon dioxide refrigerant generated by the compressor passes through the first condenser. The refrigerant in the first condenser exchanges heat with the high-temperature heat transfer oil and then enters the regenerator, preheating the refrigerant after it has passed through the evaporator, increasing the compressor's suction temperature, and simultaneously reducing the refrigerant temperature entering the expansion valve, thereby improving the overall efficiency of the unit and achieving large temperature difference cooling and heating.

[0030] Furthermore, a workshop return air grille 18 is provided on the body 1 corresponding to the return air duct 8.

[0031] Furthermore, the combined cooling and heating equipment 6 is also equipped with an oil storage tank, which is used to buffer the oil volume of the circulating oil pump.

[0032] This invention optimizes the refrigerant preheating and expansion process through a carbon dioxide refrigerant circulation and regenerator design, thereby improving the overall energy efficiency of the system. The parallel design of multiple compressors allows for flexible start / stop or adjustment of the number of compressors based on actual heating needs, avoiding efficiency losses during low-load operation of a single compressor and achieving dynamic energy matching. The use of heat transfer oil circulation replaces long-distance, high-pressure refrigerant delivery pipelines, reducing the need for high-pressure materials. Furthermore, the heat transfer oil indirectly supplies heat to the dehumidifier's heating section, and the heating amount can be adjusted by controlling the oil volume in different pipelines, making heat regulation more flexible. The heating position can be flexibly adjusted according to whether the dehumidifier has afterheating and the amount of regenerative heating.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

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