Single-layer heat recovery air handling unit
By designing a single-layer heat recovery air treatment unit that includes components such as full-heat plate heat exchanger, filter and surface cooling coil, the problems of high space saving and energy recovery are solved, and the cleanliness and temperature and humidity are met. , reduces the energy consumption of air conditioners.
Patent Information
- Application Number
- CN202323633224.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2033-12-29
AI Technical Summary
In some cases, due to limited site conditions, the double-layer vertical unit structure cannot be adopted, which makes it difficult to achieve space height savings, and it is also difficult to meet the needs of room cleanliness, temperature and humidity and energy recovery.
A single-layer heat recovery air treatment unit is designed, including all-heat plate heat exchanger, blower, exhaust fan, primary filter, medium filter, meter cooling coil, fresh air outlet and return air outlet, through these The coordinated work of components enables air purification, energy recovery and space conservation.
The unit effectively saves high space, and through heat recovery and filtration functions, it reduces the energy consumption of air conditioning, meets the needs of cleanliness and temperature and humidity, and is suitable for various occasions.
Smart Images
Figure CN222480698U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a heat recovery unit, and more specifically to a single-layer heat recovery air handling unit. Background Art
[0002] For purification occasions, some areas cannot use double-layer vertical unit structures due to limited site conditions. Therefore, how to save height space has become an important issue in engineering. In addition, energy recovery and filtration must also be considered to meet the room cleanliness requirements, temperature and humidity, and user requirements. Utility Model Content
[0003] In view of the above problems, the technical solution adopted by the present utility model is as follows.
[0004] A single-layer heat recovery air handling unit comprises a box plate, wherein the box plate is provided with:
[0005] Total heat plate heat exchanger;
[0006] The air supply fan and the exhaust fan are respectively arranged at the air supply port and the air exhaust port of the unit; the air supply fan and the exhaust fan are respectively connected to motors;
[0007] A primary filter is arranged on the full-heat plate heat exchanger;
[0008] A surface cooling coil is arranged on a side close to the exhaust port;
[0009] A medium efficiency filter is arranged between the full heat plate heat exchanger and the surface cooling coil;
[0010] Fresh air inlet and return air inlet are arranged at the top of the unit above the full-heat plate heat exchanger;
[0011] A water pan is arranged below the surface cooling coil;
[0012] The inspection port is arranged on the side wall of the unit.
[0013] The unit also includes a box base, and the box plate is arranged on the box base.
[0014] A fan base is also arranged in the box plate, and the air supply fan and the exhaust fan are arranged on the fan base.
[0015] The primary plate filter is located on the air inlet side of the plate heat recovery and is installed on a galvanized slideway. The single-piece filter is made of nylon mesh with an aluminum alloy frame, and the double-sided belt groove facilitates the connection between the two filters. The full-heat plate heat recovery is a heat exchanger that uses full-heat fiber paper as a heat transfer conductor. The supply and exhaust air channels are independent of each other and play an energy recovery function. The bag-type medium-efficiency filter is located behind the inspection door and is installed on a galvanized frame. The single-piece filter is made of chemical fiber with a galvanized frame and plays a filtering function. The surface cooling coil is a copper tube hydrophilic aluminum foil coil, which plays a cooling and dehumidification function of the unit. The centrifugal fan is a centrifugal fan with a volute. The motor is a three-phase asynchronous motor. The fan absorption power calculated according to the air volume and total static pressure is matched; the box plate is composed of a combination of galvanized steel plate and white color steel plate, and is filled with polyurethane foam material inside; the inspection door / plate is located on the inspection side of the unit, located in the heat recovery, filtration, and fan, which is convenient for on-site inspection of the filter and fan motor; the belt is a dust-free belt made of rubber; the pulleys are respectively nested on the motor output shaft and the fan output shaft, and the belt is embedded in the groove for transmission; the box base is made of channel steel, with a forklift groove hollowed out on it, and the box is fixed by bolts; the fan base is made of channel steel, and the fan motor is placed on it, with a guide rail on it to flexibly translate the fan and motor. The water tray is a stainless steel water tray, located below the surface cooling coil, which collects and removes condensed water.
[0016] The beneficial effects of the utility model are: the use of a single-layer heat recovery unit can effectively save height space, and in summer, under the effect of the temperature difference between fresh air and exhaust air, heat is transferred from fresh air to exhaust air, so that the fresh air temperature is reduced and the exhaust air temperature is increased, which plays the role of reducing the fresh air load and reducing the energy consumption of air conditioning. In winter, the operation is reversed, and the effect is the same. At the same time, the unit is equipped with functional sections such as filtering, surface cooling, and fans to meet the cleanliness and temperature and humidity requirements of customers. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is the front view of the utility model.
[0018] Figure 2 It is a top view of the utility model.
[0019] Figure numerals: 1—fresh air inlet, 2—primary filter, 3—full heat plate heat return, 4—inspection plate, 5—medium efficiency filter, 6—surface cooling coil, 7—supply fan, 8—return air inlet, 9—exhaust fan, 10—three-phase asynchronous motor, 11—water tray, 12—box plate, 13—box base, 14—fan base. DETAILED DESCRIPTION
[0020] The present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0021] like Figure 1-2 As shown, a single-layer heat recovery air handling unit includes: a full-heat plate heat exchanger 3, a supply fan 7, an exhaust fan 9, a primary filter, a fresh air inlet 1 and a return air inlet 8, a water tray 11, an inspection port 4, a box base 13, and a fan base 14.
[0022] The fresh air inlet 1 and the return air inlet 8 are located at the top of the unit and are fixed to the top of the box plate by screws; the primary filter 2 is located on the air inlet side of the full heat plate heat exchanger and is installed on a galvanized slideway. The single-piece filter is made of nylon mesh with an aluminum alloy frame, and the double-sided grooves of the filter facilitate the connection between the two filters; in summer, under the action of the temperature difference between the new and exhaust air, the heat of the full heat plate heat recovery 3 is transferred from the fresh air to the exhaust air to reduce the temperature of the fresh air and reduce energy consumption; 3 is installed after the primary filter and is fixed by the frame support to bear the load; the inspection port 4 can be an inspection door / plate, which is arranged on the side wall of the box plate 12 at the heat recovery, filtration, and fan, which is convenient for on-site inspection of the filter and the fan motor; the medium-efficiency filter 5 is located behind the inspection door and is installed on a galvanized frame. The single-piece filter is made of chemical fiber with a galvanized frame and plays a filtering function; the surface cooling coil 6 is a coil made of copper tube hydrophilic aluminum foil. Different circuit structures and heat volumes are selected according to the design requirements. The number of fins can cool, dehumidify or heat the air when passing cold water or hot water; the air supply fan 7 and the exhaust fan 9 are centrifugal fans with volutes; the air supply fan 7 and the exhaust fan 9 are respectively connected to a motor 10; the motor 10 is a three-phase asynchronous motor, and the motor and the fan are driven by a pulley and a belt to drive the fan to operate, and the treated air is sent into the room or discharged outdoors; the reheat coil is installed behind the fan, and is supported and fixed by square steel to bear the load. The reheat coil is made of steel pipes and steel sheets, and the heat source is steam, and the heating function is achieved through heat exchange; the stainless steel water tray 11 is located below the surface cooling coil 6 of the coil section, and the condensed water dehumidified by cooling in summer can directly fall into the water tray and flow out of the unit along the drain port on the side of the water tray; the box plate 12 is composed of a combination of galvanized steel plate and white color steel plate, and is filled with polyurethane foam material; the box base 13 is made of channel steel, with a forklift groove hollowed out on it, and the box body and the box plate are fixed by bolts. The fan base 14 is made of channel steel, the blower 7 and the exhaust fan 9 are arranged on the fan base 14, the fan and the motor are placed above the fan base 14, and there are guide rails on the fan base 14 to flexibly translate the fan and the motor. The belt is a dust-free belt made of rubber; the pulleys are respectively embedded in the motor output shaft and the fan output shaft, and the transmission is carried out by embedding the belt in the groove.
[0023] When the unit is working, the fresh air passes through the fresh air inlet 1 and the primary filter 2 to remove dust particles with larger particle sizes, and then exchanges heat with the return air in the plate heat recovery 3 to cool or heat it, and then passes through the medium efficiency filter 5 to remove dust particles with smaller particle sizes, and then passes through the surface cooling coil 6 for cooling and dehumidification, and then the three-phase asynchronous motor is started, the water valve is opened to control the surface cooling coil to be sent into the room through the air supply fan 7 to achieve the required room temperature, humidity and cleanliness; at the same time, the return air passes through the return air inlet 8 and the primary filter 2 to remove dust particles with larger particle sizes, and then exchanges heat with the fresh air in the plate heat recovery 3 to heat it or cool it, and then is discharged to the outside through the exhaust fan 9.
[0024] The use of this single-layer heat recovery unit can effectively save height space, and in summer, under the effect of the temperature difference between fresh air and exhaust air, the heat is transferred from fresh air to exhaust air, which reduces the fresh air temperature and increases the exhaust air temperature, thus reducing the fresh air load and air conditioning energy consumption. In winter, the operation is opposite, and the effect is the same.
[0025] The above is only a preferred embodiment of the present invention, but the present invention is not limited to the above specific embodiments. For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.
Claims
1. A single-layer heat recovery air handling unit, comprising a box plate (12), characterized in that: The box plate (12) is provided with: Total heat plate heat exchanger (3); The air supply fan (7) and the exhaust fan (9) are respectively arranged at the air supply port and the air exhaust port of the unit; the air supply fan (7) and the exhaust fan (9) are respectively connected to a motor (10); A primary filter (2) is arranged on the full-heat plate heat exchanger (3); A surface cooling coil (6) is arranged on a side close to the air outlet; A medium efficiency filter (5) is arranged between the full heat plate heat exchanger (3) and the surface cooling coil (6); A fresh air inlet (1) and a return air inlet (8) are arranged at a position above the total heat plate heat exchanger (3) at the top of the unit; A water pan (11) is arranged below the surface cooling coil (6); The inspection opening (4) is arranged on the side wall of the box plate (12).
2. The unit according to claim 1, characterized in that: The unit also includes a box base (13), and the box plate (12) is arranged on the box base (13).
3. The unit according to claim 1, characterized in that: A fan base (14) is also provided in the box plate (12), and the air supply fan (7) and the exhaust fan (9) are arranged on the fan base (14).