Fresh air dehumidification air conditioning box

Abstract

The utility model provides a kind of fresh air dehumidification air conditioning box, including box and at least two groups of air dehumidification components, the box is equipped with at least two air inlets and an air outlet, the air outlet is located the front of the box, each The air inlet to the air outlet forms an air inlet channel;The air dehumidification component is located in the box, and a group of air dehumidification components is arranged on each air inlet channel. By setting up multiple air inlet channel structure, under the premise that the volume of the box is limited, greater air inlet area is realized, the face velocity of air inlet is reduced, the resistance of air duct is reduced, and the possibility that condensate water is splashed by airflow due to excessive face velocity is avoided;When one of the air inlets is dirty and blocked, the other air inlets can still maintain normal air inlet;And in the operation process, under partial load condition, one or more air dehumidification components can be selected to be closed according to the requirement of air mixing, to meet the requirement of fresh air dehumidification while reducing energy consumption.

Description

Technical Field

[0001] This utility model relates to a fresh air dehumidification air conditioning unit. Background Technology

[0002] Fresh air dehumidification air conditioning units are core equipment in building environmental control systems. Traditional fresh air dehumidification air conditioning units mostly adopt a single-channel design, which still needs to operate at full air volume under partial load. This causes the refrigeration dehumidification coil to over-cool the air to meet dehumidification requirements, while the reheat coil consumes a lot of energy to heat up, resulting in significant energy waste. In addition, single-channel air conditioning units are prone to air volume reduction due to filter clogging, and the air intake is limited. Although there are solutions for adjusting air volume with variable frequency fans, they are costly and cannot solve the problem of low heat and humidity treatment efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of small air intake and low heat and humidity treatment efficiency of the existing fresh air dehumidification air conditioning box, and to provide a fresh air dehumidification air conditioning box.

[0004] This utility model solves the above-mentioned technical problems through the following technical solutions:

[0005] This utility model provides a fresh air dehumidification air conditioning box, including a box body and at least two sets of air dehumidification components. The box body is provided with at least two air inlets and one air outlet. The air outlet is located on the front of the box body, and each air inlet to the air outlet forms an air inlet channel. The air dehumidification components are located inside the box body, and each air inlet channel is provided with one set of air dehumidification components.

[0006] In this technical solution, the multi-inlet channel structure achieves a larger air intake area within a limited cabinet volume, reducing the face velocity of the incoming air, decreasing duct resistance, and preventing the possibility of condensate splashing due to excessive face velocity. Simultaneously, when one air inlet is clogged, the others can still maintain normal air intake. During operation, under partial load conditions, one or more air dehumidification components can be selectively shut down according to air mixing requirements, achieving fresh air dehumidification while reducing energy consumption.

[0007] Preferably, the housing is a cuboid, and the housing includes a front panel, a rear panel, a top panel, and a bottom panel. The front panel, rear panel, top panel, and bottom panel form a square tube. The left side of the square tube forms the air inlet, and the right side of the square tube forms another air inlet. The air outlet is located on the front panel of the housing.

[0008] In this technical solution, the enclosure is designed as a cuboid, with the air inlet completely covering the left and right sides of the enclosure. This maximizes the area of ​​the air inlet within a limited volume, resulting in a larger air intake area, reduced oncoming air velocity, and decreased duct resistance.

[0009] Preferably, the air inlet is divided into several areas by a grille; the air dehumidification assembly includes a filter, which is mounted on the grille.

[0010] In this technical solution, installing a grille on the air inlet facilitates the installation of the filter on a large-area air inlet.

[0011] Preferably, the air dehumidification assembly includes a filter, a refrigeration dehumidification coil, and a reheat coil, which are arranged sequentially along the air inlet direction.

[0012] In this technical solution, outdoor fresh air enters through the air inlet, passes through the filter to remove particulate matter, and then passes through the air passage of the refrigeration and dehumidification coil. Water vapor in the air condenses and falls off upon encountering the cold air. The cooled and dehumidified air is then reheated through the air passage of the reheat coil, reducing the relative humidity of the air, and finally being sent out through the air outlet.

[0013] Preferably, the air dehumidification assembly further includes a regulating valve, which is disposed between the filter and the refrigeration dehumidification coil.

[0014] In this technical solution, the regulating damper can control the opening degree according to the air volume demand of the downstream, thereby adjusting the air intake volume and matching the air supply volume with the demand air volume, avoiding excessive air volume and energy waste.

[0015] Preferably, the fresh air dehumidification air conditioning unit further includes a water receiving trough and a drain pipe. The water receiving trough is installed inside the unit and is located below the refrigeration dehumidification coil. The inlet of the drain pipe is connected to the bottom of the water receiving trough, and the drain pipe extends through the unit to the bottom of the unit.

[0016] In this technical solution, a water receiving tank is used to collect the condensate from the refrigeration dehumidification coil, and the condensate can be discharged to the outside of the cabinet through a drain pipe.

[0017] Preferably, the outlet of the drain pipe outside the box is bent towards the box body, so that the outlet of the drain pipe is higher than the lowest point of the drain pipe.

[0018] In this technical solution, the lowest point of the drain pipe forms a water trap to prevent outside air from flowing back into the air conditioning unit and to ensure that the water in the water tank drains smoothly.

[0019] Preferably, the front panel is divided into a left front panel, a middle front panel, and a right front panel, with the air outlet located on the middle front panel; the left and right front panels can be opened to expose the air dehumidification components located inside the housing to the outside.

[0020] In this technical solution, the middle front panel is fixedly connected to the upper and lower panels; the openable left and right front panels facilitate the operator's inspection and maintenance of the air dehumidification components.

[0021] Preferably, the air outlet is circular; the fresh air dehumidification air conditioning unit includes a connecting flange, the connecting flange is fixed to the front of the unit, and the flange hole of the connecting flange is coaxially arranged with the air outlet and has the same diameter.

[0022] In this technical solution, a connecting flange is used to connect with subsequent equipment, which facilitates the connection between the air outlet and the subsequent equipment.

[0023] Preferably, there are two air inlets and two air dehumidification components; the two air inlets and / or the two sets of air dehumidification components are symmetrically distributed with the center of the air outlet as the center of symmetry.

[0024] In this technical solution, in order to ensure the balance of air intake volume of the two air inlets, the centers of the two air inlets and the air outlets are symmetrically distributed with the center of symmetry; in order to balance the dehumidification effect of the two air intake channels, the centers of the two sets of air dehumidification components are also symmetrically distributed with the centers of the air outlets.

[0025] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0026] The positive and progressive effects of this utility model are as follows:

[0027] The aforementioned fresh air dehumidification air conditioning unit, through its multi-intake channel structure, achieves a larger air intake area within a limited unit volume, reduces the oncoming air velocity, decreases duct resistance, and avoids the possibility of condensate splashing due to excessive oncoming air velocity. When one air inlet is clogged, the other air inlets can still maintain normal air intake. Furthermore, during operation, under partial load conditions, one or more air dehumidification components can be selected to shut down according to air mixing requirements, achieving fresh air dehumidification while reducing energy consumption. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the fresh air dehumidification air conditioning unit of this utility model.

[0029] Figure 2 for Figure 1The diagram shows a structural schematic of the fresh air dehumidification air conditioning unit from another angle.

[0030] Figure 3 for Figure 1 The image shows a cross-sectional view of the fresh air dehumidification air conditioning unit.

[0031] Figure 4 for Figure 1 The image shows a vertical sectional view of the fresh air dehumidification air conditioning unit.

[0032] Figure 5 for Figure 1 The diagram shows a partial internal structure of the fresh air dehumidification air conditioning unit.

[0033] Explanation of reference numerals in the attached figures

[0034] Box 1

[0035] Air inlet 11

[0036] Air outlet 12

[0037] Front panel 13

[0038] Front left panel 131

[0039] Front panel 132

[0040] Right front panel 133

[0041] Rear panel 14

[0042] Top panel 15

[0043] Bottom panel 16

[0044] Grille 17

[0045] Air dehumidification component 2

[0046] Filter 21

[0047] Refrigeration dehumidification coil 22

[0048] Reheat coil 23

[0049] Regulating air valve 24

[0050] First platform 25

[0051] Second platform 26

[0052] Connecting flange 3

[0053] Flange hole 31

[0054] Water catchment 4

[0055] Drain pipe 5

[0056] Inlet 51

[0057] Outlet 52

[0058] Water trap section 53 Detailed Implementation

[0059] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0060] like Figures 1 to 5 As shown, this utility model provides a fresh air dehumidification air conditioning box, including a box body 1 and two sets of air dehumidification components 2. The box body 1 is provided with two air inlets 11 and one air outlet 12. The air outlet 12 is located on the front of the box body 1, and the two air inlets 12 are respectively located on the two sides of the box body 1. The two air inlets 12 and the air outlet 12 respectively form two air intake channels 3. The two sets of air dehumidification components 2 are located inside the box body 1, and the two sets of air dehumidification components 2 are respectively arranged on the two air intake channels 3.

[0061] By setting two air inlets 11, two air intake channels 3 are formed. This dual-air intake channel structure, within the limited volume of the housing 1, achieves a larger air intake area, reduces the oncoming air velocity, decreases duct resistance, and avoids the possibility of condensate splashing due to excessive oncoming air velocity. Simultaneously, when one air inlet 11 is clogged, the other air inlet 11 can still maintain normal air intake.

[0062] Under full-load operation, both sets of air dehumidification components 2 remain on. Outdoor fresh air enters from the left and right air inlets 11 respectively. After being dehumidified by the air dehumidification components 2, the relative humidity of the air decreases. Finally, the two streams of air merge and are sent out together from the air outlet 12.

[0063] Under partial load conditions, one set of the two air dehumidification components 2 remains on, while the other is off. Outdoor fresh air enters through the left and right air inlets 11. One stream of fresh air is dehumidified by the air dehumidification component 2; the other stream only passes through the air dehumidification component 2 without undergoing heat and humidity treatment. Finally, the two streams of air merge and are delivered together from the air outlet 12. Compared to a no-mixing-air scheme, this embodiment has a lower load during fresh air heat and humidity treatment, thus reducing energy consumption, while maintaining the same dehumidification capacity.

[0064] To ensure a balance in the airflow of the two air inlets 11, the two air inlets 11 can be symmetrically distributed with the center of the air outlet 12 as the center of symmetry. To ensure a balance in the dehumidification effect of the two air inlet channels 3, the two sets of air dehumidification components 2 can also be symmetrically distributed with the center of the air outlet 12 as the center of symmetry.

[0065] In other embodiments, depending on the actual construction environment, there can be two or more air inlets 11, forming multiple air intake channels 3. Correspondingly, the number of air dehumidification components 2 corresponds to the number of air intake channels 3. During operation, under partial load conditions, one or more air dehumidification components 2 can be selected to shut down according to air mixing requirements, achieving the requirement of fresh air dehumidification while reducing energy consumption.

[0066] like Figures 1 to 2 As shown, the housing 1 is a cuboid. The housing 1 includes a front panel 13, a rear panel 14, a top panel 15, and a bottom panel 16. The front panel 13, rear panel 14, top panel 15, and bottom panel 16 form a square tube. The left side of the square tube forms an air inlet 11, and the right side of the square tube forms another air inlet 11. The air outlet 12 is located on the front panel 13 of the housing 1.

[0067] The housing 1 is designed as a cuboid, and the air inlet 11 completely covers the left and right sides of the housing 1. This maximizes the area of ​​the air inlet 11 within the limited volume of the air conditioning unit, achieving a larger air intake area, reducing the oncoming wind speed, and reducing the resistance of the air duct.

[0068] like Figures 3 to 4 As shown, the air dehumidification assembly 2 includes a filter 21, a refrigeration dehumidification coil 22, and a reheat coil 23, which are arranged sequentially along the air inlet direction. Outdoor fresh air enters through the air inlet 11, passes through the filter 21 to remove particulate matter, and then passes through the air passage of the refrigeration dehumidification coil 22. Water vapor in the air condenses and falls off upon contact with the condenser. The cooled and dehumidified air is then reheated through the air passage of the reheat coil 23, reducing the relative humidity of the air, and finally exits from the air outlet 12.

[0069] Among them, filter 21 is a washable and removable metal plate filter. Refrigeration dehumidification coil 22 uses a finned tube heat exchanger, where the refrigerant evaporates and absorbs heat inside the tube, and the air flowing through the external channel is cooled. Reheat coil 23 uses a finned tube heat exchanger, where the refrigerant condenses and dissipates heat inside the tube, and the air flowing through the external channel is heated.

[0070] Under partial load, the refrigeration dehumidification coil 22 and reheat coil 23 of one air inlet duct 3 are closed, and the fresh air in the closed air inlet duct 3 does not undergo heat and humidity treatment. Meanwhile, the refrigeration dehumidification coil 22 and reheat coil 23 of the other air inlet duct 3 remain open. The fresh air in the open air inlet duct 3 undergoes heat and humidity treatment and is then mixed with the fresh air directly entering from the outside in the closed air inlet duct 3. This reduces the heat-to-humidity ratio of refrigeration dehumidification during heat and humidity treatment, reduces the load on the refrigeration dehumidification coil 22 and reheat coil 23, and thus reduces energy consumption.

[0071] like Figures 3 to 4As shown, the air dehumidification assembly 2 also includes a regulating valve 24, which is located between the filter 21 and the refrigeration dehumidification coil 22. The regulating valve 24, by adjusting its opening, controls the airflow entering the air inlet channel 3. The regulating valve 24 can be an electrically operated regulating valve, and its adjustment action can be completed by a given control signal. The regulating valve 24 can control its opening according to the airflow demand of the downstream system, thereby adjusting the airflow and matching the supply airflow with the demand airflow, avoiding excessive airflow and energy waste. Both sets of air dehumidification assemblies 2 are equipped with regulating valves 24, and by adjusting the opening of the two regulating valves 24, the airflow entering the two air inlet channels 3 can be controlled respectively.

[0072] like Figures 1 to 2 As shown, the air inlet 11 is divided into several areas by the grille 17, and the filter 21 is installed on the grille 17. By installing the grille 17 on the air inlet 11, it is convenient to install the filter 21 on a large area of ​​the air inlet 11.

[0073] like Figures 1 to 2 As shown, the front panel 13 is divided into a left front panel 131, a middle front panel 132, and a right front panel 133. The air outlet 12 is located on the middle front panel 132. The left front panel 131 and the right front panel 133 can be opened to expose the air dehumidification component 2 located inside the housing 1 to the outside. The middle front panel 132 is fixedly connected to the upper panel 15 and the lower panel 16. The openable left front panel 131 and the right front panel 133 facilitate the operator's inspection and maintenance of the air dehumidification component 2.

[0074] The box body 1 is an insulated box body. Specifically, the box body 1 includes a main frame and two layers of metal plates covering the main frame, with foam material filling the space between the two metal plates; more preferably, the main frame of the box body 1 can be made of aluminum profiles.

[0075] The air outlet 12 is circular. The fresh air dehumidification air conditioning unit also includes a connecting flange 3, which is fixed to the front of the housing 1. The flange hole 31 of the connecting flange 3 is coaxially arranged with the air outlet 12 and has the same diameter. The connecting flange 3 is used to connect to downstream equipment, facilitating the connection between the air outlet 12 and the downstream equipment.

[0076] like Figures 3 to 5 As shown, the fresh air dehumidification air conditioning unit also includes a water receiving tray 4 and a drain pipe 5. The water receiving tray 4 is installed inside the unit 1, located below the refrigeration dehumidification coil 22. The inlet 51 of the drain pipe 5 connects to the bottom of the water receiving tray 4, and the drain pipe 5 extends through the unit 1 to the bottom of the unit 1. The water receiving tray 4 is used to collect the condensate on the refrigeration dehumidification coil 22, and the condensate can be discharged to the outside of the unit 1 through the drain pipe 5. The water receiving tray 4 and the drain pipe 5 can be made of 304 stainless steel.

[0077] The drain pipe 5 has its outlet 52 outside the housing 1 bent towards the housing 1, making the outlet 52 higher than the lowest point of the drain pipe 1, thus forming a water trap 53 at the lowest point of the drain pipe 1. The function of the water trap 53 is to prevent outside air from flowing back into the housing 1 and to ensure that the water in the water tank 4 drains smoothly.

[0078] The water collection trough 4 is located below the regulating air valve 24 and the refrigeration dehumidification coil 22, extending to the edge of the reheat coil 23. A first support 25 is provided between the bottom of the refrigeration dehumidification coil 22 and the water collection trough 4, and a second support 26 is provided between the regulating air valve 24 and the bottom of the water collection trough 4. The inlet 51 of the drain pipe 5 is located in the gap between the reheat coil 23 and the refrigeration dehumidification coil 22. The placement of the first support 25 and the second support 26 keeps the refrigeration dehumidification coil 22 and the regulating air valve 24 at a certain distance from the water collection trough 4, ensuring that water accumulation in the water collection trough 4 will not affect the normal operation of the refrigeration dehumidification coil 22 and the regulating air valve 24. A certain gap is maintained between the reheat coil 23 and the refrigeration dehumidification coil 22. The inlet 51 of the drain pipe 5 is located between the reheat coil 23 and the refrigeration dehumidification coil 22, ensuring that the reheat coil 23 and the refrigeration dehumidification coil 22 do not interfere with each other while ensuring smooth drainage of the drain pipe 5. The above-mentioned structural design of the water receiving tank 4 can meet the functional requirements while maintaining structural compactness.

[0079] Each of the two sets of air dehumidification components 2 has a water receiving trough 4 below it. Each water receiving trough 4 is equipped with two drain pipes 5, which are located at both ends of the water receiving trough 4. This ensures that the four corners of the cabinet 1 are equipped with drain pipes 5, so that the condensate in each corner of the cabinet 1 can be discharged.

[0080] The working principle of this embodiment is as follows:

[0081] Under full-load operation, both regulating dampers 24 are open, and both refrigeration dehumidification coils 22 and both reheat coils 23 remain open. Outdoor fresh air enters through the left and right air inlets 3. The outdoor fresh air passes through filter 21 to remove particulate matter, then through adjustable dampers 24, and then through the air passages of the refrigeration dehumidification coils 22. Water vapor in the air condenses upon cooling and falls into the water collection tank 4. The cooled and dehumidified air is reheated through the air passage of the reheat coils 23, reducing the relative humidity of the air. Finally, the two streams of air from the two air inlets 3 merge and are discharged together from the air outlet 12.

[0082] Under partial load conditions, both regulating dampers 24 are open. One set of refrigeration dehumidification coils 22 and reheat coils 23 remains open, while the other set remains closed. Outdoor fresh air enters from the left and right air inlets 3 respectively. In the air inlet 3 where the refrigeration dehumidification coils 22 and reheat coils 23 are open, fresh air passes through filter 21 to remove particulate matter, then passes through regulating damper 24, and then through the air passage of refrigeration dehumidification coil 22 to be cooled and dehumidified. Finally, it passes through the air passage of reheat coil 23 to be reheated. In the air inlet 3 where the refrigeration dehumidification coils 22 and reheat coils 23 are closed, fresh air passes through filter 21 to remove particulate matter, then passes through the regulating damper 24, refrigeration dehumidification coil 22, and reheat coil 23 in sequence, but without any heat and humidity treatment. Finally, the two streams of air merge and are delivered together from the air outlet 12.

[0083] Compared with the non-mixed air scheme, the above-mentioned single-sided heat and humidity treatment and re-mixing scheme, under the premise of the same dehumidification capacity, requires the air to be treated to a lower temperature and lower humidity state in the fresh air refrigeration dehumidification process. The heat-to-moisture ratio of the refrigeration dehumidification process will be reduced, thereby reducing the proportion of ineffective sensible heat in the air-side heat exchange of the refrigeration dehumidification coil 22. This can reduce the load on the refrigeration dehumidification coil 22 and at the same time reduce the reheat load of the reheat coil 23, thereby reducing energy consumption.

[0084] This utility model is not limited to the above-described embodiments. Any changes in its shape or structure fall within the protection scope of this utility model. The protection scope of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.

Claims

1. A fresh air dehumidification air conditioning unit, characterized in that, include: The enclosure has at least two air inlets and one air outlet, with the air outlet located on the front of the enclosure, and each air inlet to the air outlet forming an air intake channel. At least two sets of air dehumidification components are located inside the housing, with one set of air dehumidification components installed on each air inlet channel.

2. The fresh air dehumidification air conditioning unit as described in claim 1, characterized in that; The enclosure is a cuboid, and includes a front panel, a rear panel, a top panel, and a bottom panel. The front panel, rear panel, top panel, and bottom panel form a square tube. The left side of the square tube forms the air inlet, and the right side of the square tube forms another air inlet. The air outlet is located on the front panel of the enclosure.

3. The fresh air dehumidification air conditioning unit as described in claim 1 or 2, characterized in that; The air inlet is divided into several areas by a grille; the air dehumidification assembly includes a filter, which is installed on the grille.

4. The fresh air dehumidification air conditioning unit as described in claim 1 or 2, characterized in that: The air dehumidification assembly includes a filter, a refrigeration dehumidification coil, and a reheat coil, which are arranged sequentially along the air inlet direction.

5. The fresh air dehumidification air conditioning unit as described in claim 4, characterized in that: The air dehumidification assembly also includes a regulating valve, which is disposed between the filter and the refrigeration dehumidification coil.

6. The fresh air dehumidification air conditioning unit as described in claim 4, characterized in that: The fresh air dehumidification air conditioning unit also includes a water receiving trough and a drain pipe. The water receiving trough is installed inside the unit and is located below the refrigeration dehumidification coil. The inlet of the drain pipe is connected to the bottom of the water receiving trough, and the drain pipe extends through the unit to the bottom of the unit.

7. The fresh air dehumidification air conditioning unit as described in claim 6, characterized in that: The outlet of the drain pipe located outside the box is bent towards the box body, so that the outlet of the drain pipe is higher than the lowest point of the drain pipe.

8. The fresh air dehumidification air conditioning unit as described in claim 2, characterized in that: The front panel is divided into a left front panel, a middle front panel, and a right front panel, with the air outlet located on the middle front panel; the left and right front panels can be opened to expose the air dehumidification components located inside the housing to the outside.

9. The fresh air dehumidification air conditioning unit as described in claim 1, characterized in that: The air outlet is circular; the fresh air dehumidification air conditioning unit includes a connecting flange, which is fixed to the front of the unit body, and the flange hole of the connecting flange is coaxially arranged with the air outlet and has the same diameter.

10. The fresh air dehumidification air conditioning unit as described in claim 1 or 2, characterized in that: The number of air inlets is two, and the number of air dehumidification components is also two; the two air inlets and / or the two sets of air dehumidification components are symmetrically distributed with the center of the air outlet as the center of symmetry.

Images