Pure countercurrent combined type fresh exhaust air energy recovery device
By adopting pure countercurrent heat exchange structure and modular design in the new exhaust energy recovery device, the problem of low energy recovery efficiency of traditional systems is solved, and high-efficiency energy recovery and low fan power consumption is achieved. It is suitable for building energy saving in high-risk environments. need.
Patent Information
- Application Number
- CN202411576374.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2024-12-17
AI Technical Summary
The traditional new exhaust air full heat recovery system has cross-infection and cross-over flow in high-risk environments, resulting in low energy recovery efficiency and cannot meet the environmental control needs in semiconductors, hospitals and experimental animal rooms.
A pure countercurrent combined new exhaust energy recovery device was designed. By setting up a countercurrent heat exchange structure in the fresh air passage and exhaust passage, it uses fresh air inlet elbow, exhaust outlet elbow, fresh air outlet elbow and exhaust inlet The elbow realizes countercurrent heat exchange of fluids, and uses modular design and components such as three-dimensional deformation tubes to improve energy recovery efficiency.
The ultimate energy recovery is achieved, the temperature efficiency and comprehensive energy recovery efficiency are improved, the fan power consumption is reduced, and the production efficiency and engineering applicability are improved through modular design.
Smart Images
Figure CN119146573A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of HVAC ventilation fresh exhaust air energy recovery, and in particular to a pure countercurrent combined fresh exhaust air energy recovery device. Background Art
[0002] Heating, ventilation and air conditioning (HVAC) systems account for up to 30%-40% of the total energy consumption of buildings, and in high-risk environments such as laboratories, this proportion rises to 60%-70%. Constant temperature and humidity systems have been widely used in industries such as experimental animal rooms, biopharmaceuticals, medical and health, and semiconductor materials. These fields have special requirements for environmental control, and the constant temperature and humidity environment has a large number of ventilation changes, resulting in high energy consumption of fresh air for heat pump air conditioners. The fresh air energy recovery device uses exhaust air to pre-cool / pre-dehumidify the fresh air in summer and pre-heat / pre-humidify the fresh air in winter, which can reduce the energy consumption generated by processing the fresh air and is an effective means of building energy conservation. Traditional European, American and Japanese fresh exhaust full heat recovery systems have cross-infection, and the fresh exhaust air is cross-flow, the comprehensive energy recovery efficiency is low, and the exhaust energy cannot be fully recycled and utilized. It is not suitable for environments such as semiconductors, hospitals, and animal room laboratories. Summary of the invention
[0003] In view of at least one deficiency in the prior art, the present invention provides a pure countercurrent combined fresh exhaust air energy recovery device, which can improve the comprehensive energy recovery efficiency and production efficiency.
[0004] To achieve the above object, the present invention provides the following technical solutions:
[0005] A pure countercurrent combined fresh exhaust air energy recovery device, comprising:
[0006] The energy recovery device body has a fresh air passage and an exhaust air passage arranged therein;
[0007] The fresh air inlet and outlet elbows include a fresh air inlet elbow, an exhaust air outlet elbow, a fresh air outlet elbow and an exhaust air inlet elbow, wherein the fresh air inlet elbow and the fresh air outlet elbow are respectively arranged at the inlet and outlet of the fresh air channel, and the exhaust air inlet elbow and the exhaust air outlet elbow are respectively arranged at the inlet and outlet of the exhaust channel, and the fluids in the fresh air channel and the exhaust channel undergo countercurrent heat exchange.
[0008] As described above, the pure countercurrent combined fresh and exhaust air energy recovery device, further, the energy recovery device body includes an energy recovery module, top and bottom cover plates, a supporting outer frame, an extension flange and a side panel, wherein a plurality of energy recovery modules are stacked inside the supporting outer frame, the two top and bottom cover plates are respectively fixed on the upper and lower sides of the fresh air channel of the supporting outer frame, the side panels are fixed on both sides of the inlet and outlet of the fresh air channel, and the supporting outer frame is respectively connected to the fresh air inlet elbow, the exhaust outlet elbow, the fresh air outlet elbow and the exhaust inlet elbow through the extension flange.
[0009] As described above, the pure countercurrent combined new exhaust air energy recovery device, further, the energy recovery module includes multiple energy recovery cores, metal end plates, metal pull rods and barrier pearl cotton, wherein the two metal end plates are connected by a metal pull rod to form a fixed frame, and multiple energy recovery cores are stacked in the fixed frame, and the two ends of the energy recovery core are fixed to the inner sides of the two metal end plates. Barrier pearl cotton is arranged between the metal pull rods, and the barrier pearl cotton on adjacent energy recovery modules on the same layer are assembled into a whole in a diagonal direction.
[0010] As described above, the pure countercurrent combined new exhaust air energy recovery device, further, the energy recovery core includes a three-dimensional deformable tube, a plastic shell and a plastic tube sheet, wherein the plastic shell and the plastic tube sheets arranged at both ends thereof are connected to form a shell, and a plurality of three-dimensional deformable tubes are arranged in the shell, and the two ends of the plurality of three-dimensional deformable tubes are fixed on the plastic tube sheet.
[0011] As described above, the pure countercurrent combined fresh exhaust air energy recovery device further has a fresh exhaust air condensate water drain port on the extension flange.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. The fresh air fluid and the exhaust air fluid are pure countercurrent heat exchange, which can realize the ultimate recovery of exhaust air energy and improve the temperature efficiency of the energy recovery device.
[0014] 2. In the energy recovery core, fresh air and exhaust fluid flow in parallel along the length of the tube bundle, the fluid resistance is low, the fan consumes less power, and the comprehensive energy recovery efficiency of the energy recovery device is improved.
[0015] 3. The energy recovery device of the present invention adopts assembled modular design and manufacturing, and can adopt a combination of multiple energy recovery modules according to the actual engineering air volume requirements, thereby improving production efficiency and reducing production cycle. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 Schematic diagram of the overall structure of the pure countercurrent combined fresh exhaust air energy recovery device in the embodiment of the present invention
[0018] Figure 2 This is a schematic diagram of the main structure of the energy recovery device in an embodiment of the present invention;
[0019] Figure 3 This is a schematic diagram of the structure of an energy recovery module in an embodiment of the present invention;
[0020] Figure 4 This is a schematic diagram of the energy recovery core structure in an embodiment of the present invention;
[0021] Figure 5 Schematic diagram of the internal structure of the energy recovery device body (without cover plate) in an embodiment of the present invention;
[0022] Explanation of the accompanying drawings: 1. Energy recovery device body; 2. Fresh air inlet elbow; 3. Exhaust air outlet elbow; 4. Fresh air outlet elbow; 5. Exhaust air inlet elbow; 1-1. Energy recovery module; 1-2. Cover plate; 1-3. Support outer frame; 1-4. Extension flange; 1-5. Side panel; 1-6. Fresh air condensate water drain outlet; 1-7. Exhaust air condensate water drain outlet; 1-1-1. Energy recovery core; 1-1-2. Metal end plate; 1-1-3. Metal pull rod; 1-1-4. Barrier pearl cotton; 1-1-1-1. Three-dimensional deformation tube; 1-1-1-2. Plastic shell; 1-1-1-3. Plastic tube sheet. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0024] Example:
[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations of the embodiments of the present invention are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0026] In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly defined. In addition, unless otherwise clearly defined and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0027] See also Figures 1 to 5 The embodiment of the present invention provides a pure countercurrent combined fresh exhaust air energy recovery device, comprising:
[0028] The energy recovery device body has a fresh air passage and an exhaust air passage arranged therein;
[0029] The fresh air inlet and outlet elbows include a fresh air inlet elbow, an exhaust air outlet elbow, a fresh air outlet elbow and an exhaust air inlet elbow, wherein the fresh air inlet elbow and the fresh air outlet elbow are respectively arranged at the inlet and outlet of the fresh air channel, and the exhaust air inlet elbow and the exhaust air outlet elbow are respectively arranged at the inlet and outlet of the exhaust channel, and the fluids in the fresh air channel and the exhaust channel undergo countercurrent heat exchange.
[0030] In certain embodiments, the energy recovery device body includes an energy recovery module, top and bottom cover plates, a supporting outer frame, an extension flange and a side panel, wherein a plurality of energy recovery modules are stacked inside the supporting outer frame, the two top and bottom cover plates are respectively fixed on the upper and lower sides of the fresh air channel of the supporting outer frame, the side panels are fixed on both sides of the inlet and outlet of the fresh air channel, and the supporting outer frame is respectively connected to the fresh air inlet elbow, the exhaust outlet elbow, the fresh air outlet elbow and the exhaust inlet elbow through the extension flange.
[0031] The energy recovery modules are connected to each other through screw holes distributed on the upper, lower, left and right sides of the metal end plates, and the energy recovery modules are connected to the supporting outer frame through screw holes. The side panels are connected and fixed to the supporting outer frame by welding, and the side panels are connected and sealed to the pearl cotton by applying glass glue. The top and bottom cover plates are connected and fixed to the supporting outer frame by screws or welding. The four extension flanges are connected and sealed to the supporting outer frame by screws or welding. The new exhaust inlet and outlet elbows are connected and sealed to the extension flanges by screws or welding.
[0032] In certain embodiments, the energy recovery module includes multiple energy recovery cores, metal end plates, metal pull rods and barrier pearl cotton, wherein two metal end plates are connected by a metal pull rod to form a fixed frame, and multiple energy recovery cores are stacked in the fixed frame. The two ends of the energy recovery core are fixed to the inner sides of the two metal end plates, and barrier pearl cotton is arranged between the metal pull rods. The barrier pearl cotton on adjacent energy recovery modules on the same layer are assembled into a whole in a diagonal direction.
[0033] In some embodiments, the energy recovery core includes a three-dimensional deformable tube, a plastic shell and a plastic tube sheet, wherein the plastic shell and the plastic tube sheets arranged at both ends thereof are connected to form a shell, and a plurality of three-dimensional deformable tubes are arranged in the shell, and the two ends of the plurality of three-dimensional deformable tubes are fixed on the plastic tube sheet.
[0034] The three-dimensional deformation tube can be various composite reinforced three-dimensional deformation tubes with smooth inner and outer surfaces, fins, or spiral grooves.
[0035] In some embodiments, a new exhaust condensate water outlet is provided on the extension flange.
[0036] As a preferred example, a pure countercurrent combined fresh air exhaust energy recovery device includes an energy recovery device body 1, a fresh air inlet elbow 2, an exhaust air outlet elbow 3, a fresh air outlet elbow 4, and an exhaust air inlet elbow 5. The energy recovery device body 1 and the four fresh air exhaust elbows are sealed and connected by screws through extension flanges 1-4.
[0037] The energy recovery device body 1 includes an energy recovery module 1-1, a top and bottom cover plate 1-2, a support outer frame 1-3, an extension flange 1-4 and a side plate 1-5. Multiple energy recovery modules 1-1 are connected up and down and front and back by screws, and are connected and fixed to the support outer frame. The energy recovery module 1-1 includes an energy recovery core 1-1-1, a metal end plate 1-1-2, a metal pull rod 1-1-3 and a barrier pearl cotton 1-1-4; the energy recovery core 1-1-1 is installed between the two metal end plates 1-1-2, and the energy recovery core 1-1-1 is arranged and fixed between the front and rear metal end plates 1-1-2 in the horizontal and vertical directions. Multiple energy recovery cores 1-1-1 are closely attached to each other as a group in the horizontal direction, and each group of energy recovery cores 1-1-1 is separated by a certain distance in the vertical direction. Barrier pearl cotton 1-1-4 is arranged between the layers of the energy recovery core 1-1-1. The energy recovery core 1-1-1 includes a three-dimensional deformable tube 1-1-1-2, a plastic shell 1-1-1-2, and a plastic tube sheet 1-1-1-3. The three-dimensional deformable tube 1-1-1-2 and the plastic tube sheet 1-1-1-3 adopt direct assembly sealing technology, so that each metal round tube is inserted into each sealing hole from left to right without welding.
[0038] Among them, after the fresh air is guided into the energy recovery device body 1 from the fresh air inlet elbow 2, it passes through the common barrier of the pearl cotton 1-1-4 and the plastic shell 1-1-1-2, and then enters the energy recovery core 1-1-1 from the bottom of the energy recovery core 1-1-1, exchanges energy with the exhaust air inside the three-dimensional deformation tube 1-1-1-2 outside the tube, flows out from the top of the energy recovery core 1-1-1, and then flows out of the energy recovery device body 1 from the fresh air outlet elbow 3. The exhaust air is guided into the energy recovery device body 1 from the exhaust air inlet elbow 5, passes through the barrier of the metal end plate 1-1-2 and the plastic tube plate 1-1-1-3, enters the inside of the three-dimensional deformation tube 1-1-1-2 from the end of the energy recovery core 1-1-1, exchanges energy with the fresh air outside the tube, and then flows out of the energy recovery device body 1 from the exhaust air outlet elbow 3.
[0039] As a result, the fresh air and exhaust air fluids are parallelly exchanged in pure countercurrent along the length of the tube bundle, the fluid resistance is low, the fan consumes less power, and the comprehensive energy recovery efficiency of the energy recovery device is improved.
[0040] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.
[0041] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0043] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable ordinary technicians in the field to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made based on the essence of the content of the present invention should be included in the protection scope of the present invention.
Claims
1. A pure countercurrent combined fresh exhaust air energy recovery device, characterized in that: include: The energy recovery device body has a fresh air passage and an exhaust air passage arranged inside; The fresh air inlet and outlet elbows include a fresh air inlet elbow, an exhaust air outlet elbow, a fresh air outlet elbow and an exhaust air inlet elbow, wherein the fresh air inlet elbow and the fresh air outlet elbow are respectively arranged at the inlet and outlet of the fresh air channel, and the exhaust air inlet elbow and the exhaust air outlet elbow are respectively arranged at the inlet and outlet of the exhaust channel, and the fluids in the fresh air channel and the exhaust channel undergo countercurrent heat exchange.
2. The pure countercurrent combined fresh exhaust air energy recovery device according to claim 1 is characterized in that: The energy recovery device body includes an energy recovery module, top and bottom cover plates, a supporting outer frame, an extension flange and a side panel, wherein a plurality of energy recovery modules are stacked inside the supporting outer frame, the two top and bottom cover plates are respectively fixed on the upper and lower sides of the fresh air channel of the supporting outer frame, the side panels are fixed on both sides of the inlet and outlet of the fresh air channel, and the supporting outer frame is respectively connected to the fresh air inlet elbow, the exhaust outlet elbow, the fresh air outlet elbow and the exhaust inlet elbow through the extension flange.
3. The pure countercurrent combined fresh exhaust air energy recovery device according to claim 2 is characterized in that: The energy recovery module includes multiple energy recovery cores, metal end plates, metal pull rods and barrier pearl cotton, wherein two metal end plates are connected by a metal pull rod to form a fixed frame, multiple energy recovery cores are stacked in the fixed frame, two ends of the energy recovery core are fixed to the inner sides of the two metal end plates, barrier pearl cotton is arranged between the metal pull rods, and the barrier pearl cotton on adjacent energy recovery modules on the same layer are assembled into a whole in a diagonal direction.
4. The pure countercurrent combined fresh exhaust air energy recovery device according to claim 3 is characterized in that: The energy recovery core includes a three-dimensional deformable tube, a plastic shell and a plastic tube plate, wherein the plastic shell and the plastic tube plates arranged at both ends thereof are connected to form a shell, and a plurality of three-dimensional deformable tubes are arranged in the shell, and the two ends of the plurality of three-dimensional deformable tubes are fixed on the plastic tube plates.
5. The pure countercurrent combined fresh exhaust air energy recovery device according to claim 1 is characterized in that: The extension flange is provided with a new exhaust condensate water drain port.