Carbon dioxide combined cooling heating and power dehumidifier

Abstract

The utility model relates to air treatment equipment technical field discloses a carbon dioxide cold and heat combined supply dehumidifier, including base, first casing, second casing, carbon dioxide cold and heat combined supply host computer, primary dehumidification runner, secondary dehumidification runner, front surface cooling, middle surface cooling, first condenser and second condenser and third condenser, and front surface cooling and middle surface cooling fluid communication supply refrigerated water, and first condenser is used for heating the regeneration air of secondary runner, and second condenser is used for heating the processing air flowing through secondary runner, and third condenser is used for heating the air of primary dehumidification runner regeneration, and after releasing heat, and sequentially enter regenerator and evaporator, the circulating water pump is used for circulating the refrigeration inlet water and refrigeration return water of evaporator. The utility model discloses through recycling the condensing waste heat generated in refrigeration cycle, is used for runner regeneration and air temperature rise, has solved the problem of serious energy waste in prior art cold and heat system separation, has reduced energy consumption significantly.

Description

Technical Field

[0001] This utility model relates to the field of air handling equipment technology, and in particular to a carbon dioxide combined cooling and heating dehumidifier. Background Technology

[0002] In many industrial production, warehousing and logistics, and high-precision experimental environments, controlling air humidity, especially achieving deep dehumidification, is crucial to ensuring product quality and process stability. Rotary dehumidifiers are commonly used equipment for achieving low dew point dry air. Their core principle lies in utilizing the regenerability of the moisture-absorbing material in the honeycomb rotor to continuously remove moisture from the air.

[0003] Rotary dehumidifier systems typically require two independent energy inputs during operation: a "cold source" and a "heat source." The "cold source" is usually provided by a separate refrigeration compression system (i.e., a chiller unit), used to pre-cool and lower the temperature of the air entering the rotor to improve its moisture absorption efficiency and for intermediate cooling during multi-stage dehumidification. The "heat source" is used to heat the regeneration air, drying the saturated rotor at high temperatures to restore its moisture absorption capacity. This heat is usually provided by a high-power electric heater or an external steam boiler.

[0004] In the aforementioned traditional technical solutions, the refrigeration system and the heating system are completely separate and operate independently. While providing a "cold source," the refrigeration system's condenser generates a large amount of waste heat, which is usually considered useless and is directly discharged into the atmosphere through cooling towers or air-cooled radiators, resulting in serious energy waste. Meanwhile, the rotary regeneration system requires a large amount of new, high-grade electricity or fuel to generate the required high-temperature "heat source." This "wasting waste heat while consuming new energy for heating" model leads to high overall energy consumption, low energy efficiency, and complex system structure in existing dehumidifiers.

[0005] Therefore, this utility model proposes a carbon dioxide combined cooling and heating dehumidifier to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a carbon dioxide combined cooling and heating dehumidifier, which aims to improve the existing technology of dehumidifiers where the refrigeration system and regenerative heating system are independent, the condensation waste heat generated by refrigeration is directly discharged, resulting in energy waste, and the whole machine has high energy consumption and complex structure.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A carbon dioxide combined cooling and heating dehumidifier includes: a base, a first housing and a second housing, a carbon dioxide combined cooling and heating main unit, a first-stage dehumidification impeller, a second-stage dehumidification impeller, a front surface cooler and a middle surface cooler; and a first condenser, a second condenser and a third condenser.

[0008] The evaporator of the carbon dioxide combined cooling and heating unit is in fluid communication with the front surface cooler and the middle surface cooler, and the compressor of the unit is in fluid communication with the first condenser and the second condenser.

[0009] Furthermore, the first condenser is used to heat the air used for regeneration of the secondary dehumidification rotor, while the second condenser is used to heat the processed air flowing through the secondary dehumidification rotor, and the third condenser 22 is used to heat the air used for regeneration of the primary dehumidification rotor.

[0010] Preferably, the dehumidifier further includes a water pump, a water inlet pipe, an evaporator, and a water pipe assembly. The water pump is fixedly connected to the base, and the water inlet pipe is fixed to the base via the evaporator. The water pump drives chilled water to circulate between the evaporator, the front surface cooler, and the middle surface cooler via the water inlet pipe and the water pipe assembly.

[0011] Preferably, the dehumidifier further includes a fresh air inlet, an air outlet, a G4 pre-filter, a channel, a medium-efficiency filter, and a post-treatment fan. The post-treatment fan is disposed in the first housing and is used to drive the treated air to flow sequentially through the G4 pre-filter, the front surface cooler, the channel, the first-stage dehumidification impeller, the medium-efficiency filter, the middle surface cooler, the second-stage dehumidification impeller, and the second condenser, and then be discharged from the air outlet.

[0012] Preferably, the dehumidifier further includes a return air vent, from which the return air entering is divided into two paths: one path flows into the medium-efficiency filter and mixes with the processed air; the other path flows to the first condenser as regeneration air for the secondary dehumidification impeller.

[0013] Preferably, the dehumidifier further includes a first-stage dehumidifier regeneration fresh air inlet, a G3 pre-filter, a first regeneration fan, and a first-stage dehumidifier regeneration outlet. The first regeneration fan is used to draw in air that has been filtered by the G3 pre-filter and heated by the third condenser, and after passing through the first-stage dehumidifier dehumidifier for regeneration, it is discharged through the first-stage dehumidifier regeneration outlet.

[0014] Preferably, the dehumidifier further includes a third housing, a secondary rotor regeneration air outlet, an air duct, and a second regeneration fan. The return air used for regeneration is heated by the first condenser and passes through the secondary dehumidification rotor. It is then driven by the second regeneration fan to flow sequentially through the third housing and the air duct, and is discharged from the secondary rotor regeneration air outlet.

[0015] Preferably, the dehumidifier further includes a rear electric heater, which is fixedly connected between the second condenser and the air outlet.

[0016] Preferably, the dehumidifier further includes an electric heating box, which is disposed inside the second housing. The electric heating box after the third condenser supplements the heating of the regenerated air, and the electric heating box after the second condenser supplements the heating of the treated air.

[0017] This utility model has the following beneficial effects: 1. In this utility model, by adopting a carbon dioxide combined cooling and heating host and recovering the condensation heat (waste heat) generated in its refrigeration cycle, it is used to heat the regenerated air of the two-stage dehumidification rotor and to raise the temperature of the treated supply air. This solves the problem in the prior art that the regenerated heat source mainly relies on high-energy-consuming electric heating and the refrigeration waste heat is wasted, resulting in low energy utilization. It achieves the technical effect of making waste heat resources and significantly reducing the energy consumption of the whole machine.

[0018] 2. In this utility model, by connecting the evaporator (cold source) of the carbon dioxide combined cooling and heating host to the front surface cooler and the middle surface cooler, and connecting the condenser (heat source) to the regeneration system of the two-stage rotor, the problem of independent cooling and heating systems, complex structure and difficulty in coordination in traditional deep dehumidification schemes is solved. The system achieves high integration, compact structure and can simultaneously realize efficient pre-cooling and deep dehumidification. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a carbon dioxide combined cooling and heating dehumidifier proposed in this utility model; Figure 2 This is a schematic diagram of the return air inlet of a carbon dioxide combined cooling and heating dehumidifier proposed in this utility model; Figure 3 This is a schematic diagram of the fresh air inlet of a carbon dioxide combined cooling and heating dehumidifier proposed in this utility model; Figure 4 This is a cross-sectional schematic diagram of the first casing of a carbon dioxide combined cooling and heating dehumidifier proposed in this utility model.

[0020] Legend: 1. Fresh air inlet; 2. G4 pre-filter; 3. Front surface cooler; 4. Channel; 5. First-stage dehumidifier impeller; 6. Medium-efficiency filter; 7. First housing; 8. Middle surface cooler; 9. Second housing; 10. Carbon dioxide combined cooling and heating unit; 11. Water inlet pipe; 12. Evaporator; 13. Water pump; 14. Water pipe assembly; 15. Return air inlet; 16. Third housing; 17. First condenser; 18. Second-stage impeller regeneration air outlet; 19. Air duct; 20. First-stage impeller regeneration fresh air inlet; 21. G3 pre-filter; 22. Third condenser; 23. Electric heating box; 24. First regeneration fan; 25. First-stage impeller regeneration air outlet; 26. Base; 27. Post-treatment fan; 28. Post-electric heating; 29. ​​Second-stage dehumidifier impeller; 30. Air outlet; 31. Second regeneration fan; 32. Second condenser. 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] Please refer to the appendix. Figure 1 -Appendix Figure 4 This utility model provides a carbon dioxide combined cooling and heating dehumidifier, which aims to solve the problems of low energy utilization efficiency and complex equipment structure caused by the independent operation of the refrigeration system and the regenerative heating system in the prior art.

[0023] As shown in the attached diagram, the carbon dioxide combined cooling and heating dehumidifier includes a base 26, and a first housing 7 and a second housing 9 fixedly connected to the base 26. The base 26 serves as the mounting base for the entire device, and the first housing 7 and the second housing 9 form the main channels for air handling and regeneration. The dehumidifier also includes a carbon dioxide combined cooling and heating main unit 10 mounted on the base 26, which has a compressor. A primary dehumidification impeller 5 is housed within the first housing 7; a secondary dehumidification impeller 29 is housed within the second housing 9; the dehumidifier also includes a front surface cooler 3 and a middle surface cooler 8, as well as a first condenser 17 and a third condenser 22; the carbon dioxide combined cooling and heating main unit... Evaporator 12 of unit 10 is in fluid communication with front surface cooler 3 and middle surface cooler 8 to supply chilled water to both; compressor of CO2 combined cooling and heating unit 10 is in fluid communication with first condenser 17 and third condenser 22 to supply high-temperature CO2 refrigerant to both; first condenser 17 is used to heat the air used for regeneration of secondary dehumidification rotor 29; third condenser 22 is used to heat the air regenerated by primary dehumidification rotor 5, and after releasing heat, the air is collected and sequentially enters the regenerator and evaporator 12. The CO2 refrigerant after expansion and evaporation is circulated to multiple compressors through the regenerator. The circulating water pump 13 is used to circulate the chilled water inlet and chilled water return connected to the evaporator 12.

[0024] To solve the above-mentioned technical problems, the carbon dioxide combined cooling and heating unit 10 simultaneously constructs an efficient chilled water circulation loop and a high-temperature refrigerant heat recovery loop. Furthermore, the high-temperature refrigerant heat recovery loop achieves cascaded energy utilization and dual heating functions through a specific series or parallel arrangement of the first condenser 17 and the third condenser 22.

[0025] Specifically, the chilled water circulation loop is driven by the evaporator 12 of the carbon dioxide combined cooling and heating unit 10. The loop also includes a water pump 13 fixedly connected to the base 26, as well as an inlet pipe 11 and a water pipe assembly 14. The inlet pipe 11 is fixed to the base 26 through the evaporator 12. The water pump 13 is used to drive the chilled water produced by the evaporator 12. The chilled water is fluidly connected to the front surface cooler 3 and the middle surface cooler 8 through the inlet pipe 11 and the water pipe assembly 14. The chilled water circulation loop provides a cold source for the front surface cooler 3 for pre-cooling the fresh air and provides a cold source for the middle surface cooler 8 for handling the intermediate cooling of the air.

[0026] Meanwhile, the high-temperature refrigerant heat recovery loop is driven by the compressor of the carbon dioxide combined cooling and heating unit 10. The high-temperature carbon dioxide refrigerant discharged by the compressor is connected to the first condenser 17 and the third condenser 22. In this embodiment, the high-temperature carbon dioxide refrigerant preferentially enters the first condenser 17, which releases heat to the air used for the regeneration of the secondary dehumidification rotor 29. Subsequently, the refrigerant continues to flow to the second condenser 32 and the third condenser 22, which simultaneously perform dual heating tasks: firstly, it is used to heat the processed air flowing through the secondary dehumidification rotor 29 to regulate the supply air temperature; secondly, it is also used to heat the air used for the regeneration of the primary dehumidification rotor 5. This multi-purpose energy recovery structure fully converts the waste heat generated in the refrigeration cycle into an effective heat source required for dehumidifier regeneration and air heating, significantly improving the overall energy utilization efficiency of the unit.

[0027] Based on the above embodiments, the present invention may further include the following preferred technical solutions: In one specific embodiment, a water pump 13 for driving the chilled water circulation is fixedly connected to a base 26, and an inlet pipe 11 is fixed to the base 26 via an evaporator 12. The water pump 13 drives the chilled water to circulate between the evaporator 12, the front surface cooler 3, and the middle surface cooler 8 of the carbon dioxide combined cooling and heating unit 10 via the inlet pipe 11 and the water pipe group 14.

[0028] In one specific embodiment, the dehumidifier further includes a fresh air inlet 1 and an air outlet 30. A G4 pre-filter 2 is disposed after the fresh air inlet 1. A channel 4 is connected between the front surface cooler 3 and the first-stage dehumidification impeller 5. A medium-efficiency filter 6 is disposed between the first-stage dehumidification impeller 5 and the middle surface cooler 8. A post-treatment fan 27 is disposed inside the first housing 7. The post-treatment fan 27 is used to drive the treated air to flow sequentially through the G4 pre-filter 2, the front surface cooler 3, the channel 4, the first-stage dehumidification impeller 5, the medium-efficiency filter 6, the middle surface cooler 8, the second-stage dehumidification impeller 29, and the third condenser 22, and finally be delivered out from the air outlet 30.

[0029] Preferably, the dehumidifier also includes a return air inlet 15, from which the return air entering is divided into two paths. One path flows into the medium-efficiency filter 6 and mixes with the processed air, while the other path flows to the first condenser 17 as regeneration air for the secondary dehumidification rotor 29.

[0030] Preferably, the dehumidifier further includes a first-stage rotor regeneration fresh air inlet 20, which is installed on the base 26. A G3 pre-filter 21 is installed on the inner wall of the first-stage rotor regeneration fresh air inlet 20. The dehumidifier also includes a first regeneration fan 24 and a first-stage rotor regeneration outlet 25. The first-stage rotor regeneration outlet 25 is installed above the first regeneration fan 24. The first regeneration fan 24 is used to draw in air that has been filtered by the G3 pre-filter 21 and heated by the third condenser 22. After passing through the first-stage dehumidification rotor 5 for regeneration, the air is discharged through the first-stage rotor regeneration outlet 25.

[0031] Preferably, the dehumidifier further includes a third housing 16, which is fixedly connected to the top of the second housing 9. The dehumidifier also includes a secondary rotor regeneration outlet 18, an air duct 19, and a second regeneration fan 31. The air duct 19 is connected between the third housing 16 and the secondary rotor regeneration outlet 18. The return air for regeneration is heated by the first condenser 17 and passes through the secondary dehumidification rotor 29. It is then driven by the second regeneration fan 31 to flow sequentially through the third housing 16 and the air duct 19, and is discharged from the secondary rotor regeneration outlet 18.

[0032] Preferably, the dehumidifier further includes a rear electric heater 28, which is fixedly connected between the second condenser 22 and the air outlet 30, and is used to compensate for the temperature of the processed air before it is delivered.

[0033] Preferably, the dehumidifier further includes an electric heating box 23, which is disposed inside the second housing 9. The electric heating box 23 is used to supplement the heating of the regenerated air when the heat of the first condenser 17, the second condenser 32 or the third condenser 22 is insufficient.

[0034] Working principle: After the system starts, the carbon dioxide combined cooling and heating unit 10 runs, and its compressor compresses the carbon dioxide refrigerant into a high-temperature and high-pressure gas. This high-temperature gas flows through the first condenser 17, the second condenser 32, and the third condenser 22, releasing heat. The refrigerant after releasing heat enters the evaporator 12 inside the unit 10 for expansion and cooling. At the same time, the water pump 13 drives the chilled water to circulate between the evaporator 12 and the front surface cooler 3 and the middle surface cooler 8 through the inlet pipe 11 and the water pipe group 14. The evaporator 12 cools the chilled water, thereby providing a continuous cold source for the front surface cooler 3 and the middle surface cooler 8.

[0035] In the air handling process, outdoor fresh air enters through fresh air inlet 1, is filtered by G4 pre-filter 2, and then enters the front surface cooler 3, where it is pre-cooled by chilled water and a large amount of moisture is removed by condensation. Subsequently, the air enters through channel 4 into the first-stage dehumidification impeller 5 housed in the first housing 7 for adsorption dehumidification. At the same time, some workshop return air entering from return air inlet 15 mixes with the air that has undergone first-stage dehumidification. The mixed air is then filtered by medium-efficiency filter 6 and enters the middle surface cooler 8 where it is cooled again by chilled water. The cooled air is driven by post-treatment fan 27 housed in the first housing 7 and passes through the second-stage dehumidification impeller 29 housed in the second housing 9 for deep dehumidification. Finally, the dry, low-temperature air flows through the third condenser 22, is heated by high-temperature carbon dioxide refrigerant, and is further heated to the set temperature by the post-electric heater 28 if necessary, and is then sent into the workshop through air outlet 30.

[0036] In the rotor regeneration process, the system has two regeneration airflow paths: one is used for the regeneration of the secondary dehumidification rotor 29, which uses a portion of the return air entering from the return air inlet 15. This return air flows through the first condenser 17 and is heated by high-temperature refrigerant. When the heat is insufficient, it is supplemented by an electric heating box 23 installed in the second housing 9. The high-temperature regeneration air passes through the secondary dehumidification rotor 29 to remove moisture, and is then drawn by the second regeneration fan 31, passing through the third housing 16 fixedly connected to the top of the second housing 9 and the air duct 19, from the secondary... The first stage dehumidification rotor 5 is regenerated by exhausting air from the rotor regeneration outlet 18; secondly, it is used for the regeneration of the first stage dehumidification rotor 5. It uses outdoor air that enters from the first stage rotor regeneration fresh air inlet 20 and is filtered by the G3 primary filter 21. This air flows through the third condenser 22 and is heated by high-temperature refrigerant. When the heat is insufficient, it is also supplemented by electric heating box 23. The high-temperature regeneration air is drawn by the first regeneration fan 24 and passes through the first stage dehumidification rotor 5. The regenerated humid air is discharged from the first stage rotor regeneration outlet 25 installed above the first regeneration fan 24.

[0037] Through the synergistic effect of the above structures, this utility model uses the condensation heat (high-temperature refrigerant) generated in the refrigeration cycle of the carbon dioxide combined cooling and heating host 10 for the first condenser 17 and the third condenser 22, which efficiently recovers waste heat and uses it for the regeneration of the two-stage rotor and the heating of the air supply. At the same time, the chilled water produced by the evaporator 12 is used for the pre-cooling and intermediate cooling of the air, which solves the problems of separation of refrigeration and heating, high energy consumption and complex structure in the prior art.

Claims

1. A carbon dioxide combined cooling and heating dehumidifier, comprising: Base (26); A first housing (7) and a second housing (9) are fixedly connected to the base (26); A carbon dioxide combined cooling and heating unit (10) is installed on the base (26), and the carbon dioxide combined cooling and heating unit (10) has a compressor; A primary dehumidification impeller (5) is housed within the first housing (7); A secondary dehumidification impeller (29) is housed within the second housing (9); Front surface cooler (3) and middle surface cooler (8); First condenser (17), second condenser (32) and third condenser (22); Its features are, The evaporator (12) of the carbon dioxide combined cooling and heating unit (10) is in fluid communication with the front surface cooler (3) and the middle surface cooler (8) to supply chilled water to both. The compressor of the carbon dioxide combined cooling and heating unit (10) is in fluid communication with the first condenser (17) and the third condenser (22) to supply high-temperature carbon dioxide refrigerant to both. The first condenser (17) is used to heat the air used for regeneration of the secondary dehumidification rotor (29); The third condenser (22) is used to heat the regenerated air flowing through the first-stage dehumidification impeller (5).

2. A carbon dioxide combined cooling and heating dehumidifier according to claim 1, characterized in that: The dehumidifier also includes: A water pump (13) is fixedly connected to the base (26); The water inlet pipe (11) is fixed to the base (26) via the evaporator (12); And water pipe assembly (14); The water pump (13) drives the chilled water to circulate between the evaporator (12), the front surface cooler (3) and the middle surface cooler (8) via the inlet pipe (11) and the water pipe assembly (14).

3. A carbon dioxide combined cooling and heating dehumidifier according to claim 1, characterized in that: The dehumidifier also includes: Fresh air inlet (1) and air supply outlet (30); The G4 pre-filter (2) is installed after the fresh air inlet (1); Channel (4) is connected between the front surface cooler (3) and the first-stage dehumidification impeller (5); A medium-efficiency filter (6) is disposed between the primary dehumidification impeller (5) and the intermediate surface cooler (8); And a post-treatment fan (27), which is housed in the first housing (7), is used to drive the treated air to flow sequentially through the G4 primary filter (2), the front surface cooler (3), the channel (4), the first-stage dehumidification impeller (5), the medium-efficiency filter (6), the middle surface cooler (8), the second-stage dehumidification impeller (29), the third condenser (22), and out from the air outlet (30).

4. A carbon dioxide combined cooling and heating dehumidifier according to claim 3, characterized in that: The dehumidifier also includes a return air inlet (15), from which the return air entering is divided into two paths: one path flows into the medium-efficiency filter (6) and mixes with the processed air; the other path flows to the first condenser (17) as regenerated air for the secondary dehumidification impeller (29).

5. A carbon dioxide combined cooling and heating dehumidifier according to claim 1, characterized in that: The dehumidifier also includes: A primary rotary regenerated fresh air inlet (20) is installed on the base (26); The G3 primary filter (21) is installed on the inner wall of the primary rotary regeneration fresh air inlet (20); First regenerative fan (24); And a first-stage rotary regeneration air outlet (25) is installed above the first regeneration fan (24); The first regeneration fan (24) is used to draw air that has been filtered by the G3 primary filter (21) and heated by the third condenser (22), and after being regenerated by the first-stage dehumidification impeller (5), it is discharged through the first-stage impeller regeneration outlet (25).

6. A carbon dioxide combined cooling and heating dehumidifier according to claim 4, characterized in that: The dehumidifier also includes: The third housing (16) is fixedly connected to the top of the second housing (9); Secondary rotary regeneration air outlet (18); Air duct (19), the air duct (19) is connected between the third housing (16) and the secondary rotor regeneration air outlet (18); And the second regenerator (31); The return air used for regeneration is heated by the first condenser (17) and passes through the secondary dehumidification impeller (29). It is then driven by the second regeneration fan (31) and flows sequentially through the third housing (16) and the air duct (19), and is discharged from the regeneration outlet (18) of the secondary impeller.

7. A carbon dioxide combined cooling and heating dehumidifier according to claim 3, characterized in that: The dehumidifier also includes a rear electric heater (28), which is fixedly connected between the third condenser (22) and the air outlet (30).

8. A carbon dioxide combined cooling and heating dehumidifier according to claim 6, characterized in that: The dehumidifier also includes an electric heating box (23), which is located inside the second housing (9) and is used to supplement the regenerated air when the heat of the first condenser (17) or the third condenser (22) is insufficient.

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