Air conditioner air handling unit and air conditioner with same

Abstract

The invention relates to the technical field of energy-saving heat exchange, in particular to an air conditioning air handling unit and an air conditioner with the air conditioning air handling unit. An air supply unit comprises an air supply box, an air supply side heat pipe unit, N surface cooling coil sets and an air supply EC fan wall, and the air supply side heat pipe unit, the N surface cooling coil sets and the air supply EC fan wall are sequentially arranged in the air supply box in the air supply direction. The sum of the area of the acting surfaces of the coil pipes of the surface cooling coil pipe group is equal to the air-passing sectional area of the air supply box body; the air exhaust unit comprises an air exhaust box body and an air exhaust side heat pipe unit located in the air exhaust box body, residual / waste hot airflow passing through the air exhaust side heat pipe unit is introduced into the air exhaust box body, and the air exhaust side heat pipe unit and the air supply side heat pipe unit are connected through a pipeline to form a medium circulation loop. The air exhaust side heat pipe unit and the air supply side heat pipe unit are connected through the pipeline to form a medium circulation loop, heat of residual / waste hot airflow is collected and transferred and conveyed into the air supply unit to heat to-be-treated air in the air conditioning unit, and the energy consumption of the air conditioning system can be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of energy-saving heat exchange, and particularly to an air handling unit for an air conditioner and an air conditioner having the same. Background Art

[0002] An air handling unit is a device for regulating the temperature, humidity and cleanliness of indoor air. Generally, it includes an air filtration section, a surface cooler (cooling coil) section, an air humidification section and a fan section, etc. It is a core device in an air conditioning system, mainly used for regulating and transporting air to provide suitable temperature, humidity, air cleanliness and ventilation effect for the interior of a building.

[0003] In the current air handling unit, the energy consumption of the air conditioning system is relatively high, mainly reflected in the heating stage of the air, with relatively high energy consumption. Based on this, the present application provides an air handling unit for an air conditioner and an air conditioner having the same. Summary of the Invention

[0004] In view of the above technical problems, the present invention overcomes the disadvantages of the prior art and provides an air handling unit for an air conditioner and an air conditioner having the same. By collecting the heat of the surplus / waste heat air flow through an exhaust fan group and transferring it to the supply fan group to heat the air to be processed in the air conditioner unit, the energy consumption of the air conditioning system can be effectively reduced.

[0005] In a first aspect, the present invention provides an air handling unit for an air conditioner, including a supply fan group and an exhaust fan group. The supply fan group includes a supply air box body and a supply air side heat pipe unit, N surface cooling coil groups and a supply air EC fan wall arranged in sequence along the supply air direction in the supply air box body. The air flow of the air conditioner to be processed enters from the first air inlet on the air inlet side of the supply air box body, and after heat exchange, is discharged from the first air outlet on the air outlet side of the supply air box body, wherein the sum of the coil working surface areas of the N surface cooling coil groups is equal to the cross-sectional area of the air passing through the supply air box body; The exhaust fan group includes an exhaust air box body and an exhaust air side heat pipe unit located in the exhaust air box body, and a surplus / waste heat air flow passing through the exhaust air side heat pipe unit is introduced into the exhaust air box body. The exhaust air side heat pipe unit and the supply air side heat pipe unit are connected by a pipeline to form a medium circulation loop, and a power pump device for providing circulation power for the medium is installed on the medium circulation loop.

[0006] Further, the surface cooling coil groups are arranged in a staggered manner, and at least one of the surface cooling coil groups is movably arranged in the supply air box body so that at least part of the coil working surface coincides in the supply air direction.

[0007] Further, a track is provided in the supply air box body, and at least one of the surface cooling coil groups is slidably engaged with the track.

[0008] Further, the track is perpendicular to the supply air direction.

[0009] Further, a hose for circulating refrigerant is connected to the surface cooler coil group.

[0010] Further, rollers are connected to the bottom of the surface cooler coil group.

[0011] Further, a rolling curtain filter is installed at the first air inlet of the air supply box body.

[0012] Further, the exhaust air box body is respectively provided with a second air duct and a third air duct for air inlet and air outlet along the conveying direction of the surplus / waste heat air flow, and an exhaust EC fan wall is arranged near the second air duct in the exhaust air box body. Both the air supply EC fan wall and the exhaust EC fan wall are composed of an installation frame and a plurality of EC fans connected to the installation frame. The EC fans are evenly distributed in an array and connected to the installation frame.

[0013] Further, the air supply box body and / or the exhaust air box body is specifically a cuboid-shaped hollow structure formed by splicing polyurethane foam boards.

[0014] In a second aspect, the present invention also provides an air conditioner, which has the air handling unit for air conditioner according to any one of the solutions in the first aspect.

[0015] The beneficial effects of the present invention are as follows: (1) The present invention provides an air handling unit for air conditioner. By connecting the heat pipe unit on the exhaust side and the heat pipe unit on the air supply side through pipes to form a medium circulation loop, the heat of the surplus / waste heat air flow is collected and transferred to the air supply unit to heat the air to be processed in the air conditioner unit, which can effectively reduce the energy consumption of the air conditioning system. (2) For the air handling unit for air conditioner provided by the present invention and the air conditioner having the same, through the movable setting of the surface cooler coil group in the air supply box body, at least part of the coil action surface can coincide in the air supply direction. Each surface cooler coil group can be moved to adjust the area size of the coil action surface, so that the resistance of the air flow when the air conditioner is not operating at full power in the transitional season is reduced, and the energy consumption of the air conditioning system is greatly reduced. (3) For the air supply EC fan wall and the exhaust EC fan wall provided by the present invention, through a number of EC fans that can be independently opened and closed on the fan wall, combined with the movable surface cooler coil group, the fan wall can select the position and number of EC fans to be opened according to different seasons and different required air volumes to reduce the overall energy consumption of the air conditioner. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the air handling unit for air conditioner in a specific embodiment of the present invention; Figure 2 is a schematic diagram when two surface cooler coil groups operate together in a specific embodiment of the present invention; Figure 3Schematic diagram when two finned coil groups stop in the specific embodiment of the present invention; Figure 4 Schematic diagram of the structure of an air handling unit of an air conditioner in another specific embodiment of the present invention; Figure 5 Schematic diagram when three finned coil groups operate together in the specific embodiment of the present invention; Figure 6 Schematic diagram when three finned coil groups stop working in the specific embodiment of the present invention; Figure 7 Schematic diagram of the structure of the supply air EC fan wall in the specific embodiment of the present invention; Figure 8 Schematic diagram of the side structure of the supply air EC fan wall in the specific embodiment of the present invention; Figure 9 Schematic diagram of the exhaust air EC fan wall in the specific embodiment of the present invention; In the figure: 100, supply fan group; 101, first air inlet; 102, first air outlet; 103, first treatment space; 104, second treatment space; 105, third treatment space; 110, supply side heat pipe unit; 111, air passing cross-section; 120, finned coil group; 121, coil action surface; 130, supply air EC fan wall; 140, roll-up filter; 150, first air duct; 160, track; 200, exhaust fan group; 210, exhaust side heat pipe unit; 220, exhaust air EC fan wall; 230, second air duct; 240, third air duct; 300, power pump device; 401, EC fan; 402, fan action surface. Specific embodiment

[0017] This embodiment provides an air handling unit of an air conditioner, as Figure 1 shown, which includes a supply fan group 100 and an exhaust fan group 200. The supply fan group 100 specifically includes a supply air box body and a supply side heat pipe unit 110, two finned coil groups 120, and a supply air EC fan wall 130 arranged in sequence along the supply air direction (from left to right) in the supply air box body. The exhaust fan group 200 includes an exhaust air box body and an exhaust side heat pipe unit 210 located in the exhaust air box body. And the exhausted / waste heat air flow passing through the exhaust side heat pipe unit 210 is introduced into the exhaust air box body. The exhaust side heat pipe unit 210 and the supply side heat pipe unit 110 are connected by pipelines to form a medium circulation loop, and a power pump device 300 for providing circulating power for the medium is installed on the medium circulation loop. Refer to Figure 2, the air flow of the air conditioner to be processed enters from the first air inlet 101 on the air inlet side of the air supply box body, and after heat exchange, it is discharged from the first air outlet 102 on the air outlet side of the air supply box body (i.e., the installation position of the first air duct 150). The sum of the areas of the coil working surfaces 121 of the two finned tube coil groups 120 is equal to the area of the air passing section 111 of the air supply box body. Among them, the first treatment space 103 is the area where the air flow of the air conditioner to be processed just enters the air supply box body, the second treatment space 104 is the area where the air flow of the air conditioner to be processed is heated by the heat pipe unit 110 on the air supply side, and the third treatment space 105 is the area after being cooled by the finned tube coil group 120.

[0018] Hoses for circulating refrigerant are connected to the ends of the finned tube coil group 120. A rolling curtain filter 140 is installed at the first air inlet 101 of the air supply box body. The exhaust box body is respectively provided with a second air duct 230 and a third air duct 240 for air inlet and air outlet along the conveying direction of the surplus / waste heat air flow, and an exhaust EC fan wall 220 is arranged near the second air duct 230 in the exhaust box body.

[0019] In this embodiment, the two finned tube coil groups 120 are arranged staggeredly, and at least one finned tube coil group 120 is movably arranged in the air supply box body, so that at least part of the coil working surfaces 121 can coincide in the air supply direction. As Figure 3 shown, after the two finned tube coil groups 120 coincide in the air supply direction, when the finned tube coil group 120 does not operate or operates at low power, only one coil working surface 121 blocks the air flow, and with the variable frequency fan of the entire air handling unit of the air conditioner, the energy consumption can be reduced.

[0020] As Figure 1 shown, each finned tube coil group 120 in the present invention can move in the air supply box body. Specifically, it can be through the track 160. The track 160 is arranged perpendicular to the air inlet direction. The finned tube coil group 120 is slidably fitted on the track 160, and at the same time, a driving motor can be installed to provide power for the movement of the finned tube coil group 120; in some other embodiments, rollers can also be installed at the bottom of the finned tube coil group 120 to facilitate the movement of the finned tube coil group 120 in the air supply box body or to facilitate the movement of the finned tube coil group 120 on the track 160.

[0021] In some specific embodiments, the air supply box body and the exhaust box body described in the present application can be a cuboid-shaped hollow structure formed by splicing polyurethane foam boards. The foam boards can adopt a double cold bridge prevention structure. The inner and outer panels are separated from the polyurethane foam around the perimeter to achieve a double cold bridge prevention effect, effectively reducing the air leakage rate and reducing the loss of cold and heat.

[0022] The finned coil group 120 described in this application is specifically in the form where the coils cover the cross-section of the air supply box. However, when the coils are not used in the transitional season, resistance always exists, resulting in power waste. In this embodiment, a movable and adjustable finned coil group 120 is adopted. The coils are divided into two parts. In the transitional season, one side of the coils is pushed to one side by a power motor, so that half of the cross-section of the box is in a state of natural air circulation, the resistance of the overall functional section becomes smaller, the variable-frequency motor adjusts the corresponding working frequency, and the power consumption of the equipment is reduced, effectively reducing energy consumption.

[0023] It should be noted that the rolling filter 140 described in this application is specifically an automatic winding air filter. It is an air dust removal device that converts the pressure difference before and after passing through the filter into a sensing electrical signal and automatically replaces the filter material.

[0024] As Figure 4 shown, different from the foregoing embodiments, three groups of finned coil groups 120 are provided in this embodiment. All three groups of finned coil groups 120 can move in the air supply box. Refer to Figure 5 , the sum of the areas of the coil action surfaces 121 of the three groups of finned coil groups 120 is equal to the cross-sectional area 111 of the air supply box. The finned coil group 120 has the maximum heat exchange power. As Figure 6 shown, the three groups of finned coil groups 120 overlap in the air inlet direction, and the area of the coil action surface 121 is one-third of the cross-sectional area 111 of the air supply box. At this time, all the finned coil groups 120 can be shut down or only one group of finned coil groups 120 can be turned on for operation.

[0025] In some specific embodiments, the air handling unit of the air conditioner in this application is mainly used in an air conditioning system to process and regulate the air of the air conditioner.

[0026] In addition, the supply EC fan wall 130 and the exhaust EC fan wall 220 described in this application are both fan walls composed of an installation frame and a plurality of EC fans 401 connected to the installation frame. As Figure 7 and Figure 9 shown, the air flow directions of the supply EC fan wall 130 and the exhaust EC fan wall 220 are different. Figure 8 is the side structure schematic diagram of the supply EC fan wall 130. 16 EC fans 401 are arranged in an array and evenly distributed on the installation frame. The supply EC fan wall 130 and the exhaust EC fan wall 220 in this application can respectively turn on or off the EC fans 401 at the corresponding positions and quantities according to the power demand. In the transitional season, the coil action surface 121 is reduced. Therefore, a small number of EC fans 401 can be turned on to achieve the effect of energy saving. As in Figure 2 , all the EC fans 401 are turned on, and the fan action surface 402 shown in the figure exists in the supply fan group 100. But in Figure 3In the figure, since the working surfaces 121 of the two coil pipes coincide in the air supply direction, only half of the EC fans 401 are turned on. The fan working surface 402 of the fan wall is as shown in Figure 3 ; Similarly, refer to Figure 5 and Figure 6 . In Figure 5 , all the EC fans 401 of the supply fan group 100 are turned on, while in Figure 6 , the number of EC fans 401 of the supply fan group 100 turned on is two-thirds of the total amount. That is, the number and position of the EC fans 401 of the supply fan group 100 can be adjusted in combination with whether the surface cooling coil group 120 is operating and its position.

[0027] In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present invention.

Claims

1. An air-conditioning air handling unit, comprising an air supply unit (100) and an exhaust unit (200), characterized in that: The air supply unit (100) comprises an air supply box, and an air supply side heat pipe unit (110), N surface cooling coil groups (120), and an air supply EC fan wall (130) arranged in sequence in the air supply box along the air supply direction. The air conditioning airflow to be processed enters through a first air inlet (101) on the air inlet side of the air supply box, and is discharged through a first air outlet (102) on the air outlet side of the air supply box after heat exchange, wherein the sum of the areas of the coil action surfaces (121) of the N surface cooling coil groups (120) is equal to the area of ​​the air flow cross section (111) of the air supply box; The exhaust unit (200) comprises an exhaust box and an exhaust-side heat pipe unit (210) located in the exhaust box, and a residual / waste heat flow passing through the exhaust-side heat pipe unit (210) is introduced into the exhaust box, the exhaust-side heat pipe unit (210) and the air supply-side heat pipe unit (110) are connected via a pipeline to form a medium circulation loop, and a power pump device (300) is installed on the medium circulation loop to provide circulation power for the medium.

2. The air conditioning air handling unit according to claim 1, characterized in that: The surface cooling coil groups (120) are arranged in a staggered manner, wherein at least one of the surface cooling coil groups (120) is movably arranged in the air supply box body, so that at least part of the coil action surfaces (121) overlap in the air supply direction.

3. The air conditioning air handling unit according to claim 2, characterized in that: A track (160) is provided in the air supply box, and at least one of the surface cooling coil groups (120) is slidably fitted on the track (160).

4. The air conditioning air handling unit according to claim 3, characterized in that: The track (160) is perpendicular to the air supply direction.

5. The air conditioning air handling unit according to claim 2, characterized in that: The surface cooling coil group (120) is connected to a hose for circulating refrigerant.

6. The air conditioning air handling unit according to claim 2, characterized in that: A roller is connected to the bottom of the surface cooling coil group (120).

7. The air conditioning air handling unit according to claim 1, characterized in that: A rolling filter (140) is installed at the first air inlet (101) of the air supply box.

8. The air conditioning air handling unit according to claim 1, characterized in that: The exhaust box is provided with a second air duct (230) and a third air duct (240) for air intake and air outlet respectively along the direction of conveying the residual / waste heat air flow, and an exhaust EC fan wall (220) is provided in the exhaust box near the second air duct (230). The air supply EC fan wall (130) and the exhaust EC fan wall (220) are both composed of a mounting frame and a plurality of EC fans (401) connected to the mounting frame, and the EC fans (401) are evenly distributed in an array and connected to the mounting frame.

9. The air conditioning air handling unit according to claim 1, characterized in that: The air supply box and / or the air exhaust box is specifically a rectangular hollow structure formed by splicing polyurethane foam panels.

10. An air conditioner, characterized in that: An air conditioning air handling unit according to any one of claims 1 to 9.

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