CN201064072Y - An air-to-air heat exchanger - Google Patents

Abstract

The utility model discloses an air-to-air heat exchanger, which comprises a housing which can be conveniently connected to a cabinet and has an accommodating space inside, a plurality of air ports are opened on the housing, and a heat exchanger is arranged inside the housing The heat exchanger part includes at least one heat exchanger inner core, two fans and a heater. The back of the shell is provided with an air return port and an air outlet up and down, and a centrifugal fan is provided at the corresponding return air port. The left and right sides are provided with The air inlet and outlet, and a fan is installed at the corresponding air outlet. The inner core of the heat exchanger is installed in the center of the shell, and the inside of the shell is sealed and isolated into two parts. According to the temperature in the cabinet, with the help of the heater in the cabinet Increase the temperature of the cabinet, use the centrifugal fan to suck the hot air in the cabinet into the inner core of the heat exchanger and the heat exchange plate of the inner core of the heat exchanger to produce heat exchange, and then use the right fan to suck the cold air outside the environment into the heat exchange In the heat exchange plate of the inner core of the device, the constant temperature inside the cabinet is realized.

Description

An air-to-air heat exchanger

(1) Technical field:

The utility model relates to a heat exchange device, which is a heat exchanger device, which is suitable for gas-gas heat exchange. It is especially suitable for air-to-air heat exchanger devices used in communication, electronics, and electric power industries. The heat exchanger also has intelligent control and self-diagnosis functions, especially to create a good and reliable working environment for outdoor communication, electronic, and electrical equipment.

(two) background technology:

Existing traditional chassis and cabinets, such as general electronics, electric power, and communication cabinets, in order to maintain a stable working temperature, in order to prevent rapid temperature changes and moisture, dust and foreign objects in the external environment, affecting the normal function and life of the equipment , causing damage to electronic components, most of them are only ordinary fans and radiators installed in the above-mentioned chassis and cabinets to eliminate the influence of temperature on electronic components. This commonly used cooling method still cannot effectively adjust the temperature, which may easily lead to failure or damage of components due to overheating or overcooling. At the same time, it cannot isolate moisture, dust, and foreign objects from the external environment from intruding into the cabinet, affecting the normal operation of the equipment. The operation of the work, but also brought a lot of inconvenience and trouble in the maintenance and replacement.

(3) Contents of the invention:

The technical problem to be solved by the utility model is to provide an air-to-air heat exchanger that can more effectively adjust the internal temperature of the cabinet and isolate the external environment, reduce the failure or damage of components, ensure the normal operation of the equipment for a long time, and facilitate maintenance and replacement .

In order to achieve the above purpose, the utility model provides a new structure of an air-to-air heat exchanger, mainly as follows: two accommodating spaces, upper and lower, and left and right, are arranged inside the casing, and a heat exchanger is fixed in the middle of the casing. Core, with the help of the heat exchanger inner core with closed and isolated passages, as an exchange with the hot air in the cabinet, to achieve the purpose of cooling, in which a heat-insulating sponge is installed at the connection between the heat exchanger inner core and the fan passage Pad, and coated with silica gel around and in the middle, to seal the upper and lower, left and right accommodating spaces, so that the air inside and outside the cabinet will not convect, and the left and right walls of the cabinet are set to circulate through the cabinet. The air outlet and the circulating air outlet in the cabinet, the ambient air inlet and the ambient air outlet are arranged on the top and bottom of the inner wall of the cabinet, and fans are installed at the circulating air return port and the ambient air outlet in the cabinet, and the circulating air return port in the cabinet and the ambient air inlet The air outlet is equipped with a filter. First, use the temperature sensor installed inside the cabinet to detect the temperature in the cabinet. If the temperature in the cabinet is lower than the set value of the program controller, the heater in the cabinet will be turned on to the specified temperature. When the temperature is higher than the set temperature of the program controller , you can use the centrifugal fan in the cabinet circulation return port on the back of the heat exchanger shell to suck the hot air in the cabinet into the inner core of the heat exchanger to exchange with the heat exchange plate of the inner core of the heat exchanger, and then use the fan on the right side The cold air from the external environment is sucked into the heat exchange plate of the inner core of the heat exchanger, because there is only one heat exchange plate between the two fluids, which is similar to a plate heat exchanger, which improves the heat exchange efficiency and ensures a constant temperature inside the casing with isolation.

In order to facilitate an in-depth understanding of the structure and beneficial effects of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation.

(4) Description of drawings:

Fig. 1 is the front view of removing the upper cover of the utility model.

Fig. 2 is a left view of the utility model.

Fig. 3 is the right view of the utility model.

Fig. 4 is the rear view of the utility model.

Fig. 5 is a schematic cross-sectional view of the utility model.

Fig. 6 is a front view of the inner core of the heat exchanger of the present invention.

Fig. 7 is a schematic diagram of the temperature control of the utility model.

Reference signs: heat exchanger inner core 1, centrifugal fan 2, fan 3, casing 4, positioning pin 5, rivet nut 6, inner core bent plate 7, bent plate 8, program controller 9, fan fixing plate 10. Lower seal 11, upper seal 12, filter 1 13, filter 2 14, port socket 15, power socket 16, heat exchanger fixing rivet nut 17, casing cover 18, sealing ring 19, heater block 20 , Fan 21, heat exchanger fixing screw 22, inner circulation return air outlet 23, inner circulation air outlet 24, ambient air inlet 25, ambient air outlet 26, inner circulation air outlet 27, inner circulation return air outlet 28.

(5) Specific implementation methods:

In Figures 1, 2, 3, 4, 5, 6, and 7, the utility model discloses an air-to-air heat exchanger structure, including a heat exchanger inner core 1, a centrifugal fan 2, a fan 3, and a casing 4. Locating pin 5, rivet nut 6, inner core bent plate 7, bent plate 8, program controller 9, fan fixing plate 10, lower seal 11, upper seal 12, filter one 13, filter two 14, port socket 15. Power socket 16, heat exchanger fixing rivet nut 17, casing cover plate 18, sealing ring 19, heater block 20, fan 21, heat exchanger fixing screw 22 and other components combined together; where:

The casing 4 is a box body, which is well sealed and anti-rust as a whole. The casing is equipped with positioning pins 5 and heat exchanger fixing rivet nuts 17, which can be fixed at a specific position of the cabinet. The inside of the casing is a container The space is used to install other component mechanisms, and the internal circulation air outlet 24 and the internal circulation return air outlet 23 of the cabinet are set up and down on the back of the cabinet, and the fan fixing plate 10 is used to install the centrifugal fan 2 and the internal circulation return air outlet 23. Filter two 14. The ambient wind air inlet 25 and the ambient air outlet 26 are set through the left and right sides of the cabinet, and the blower fan 3 is installed at the ambient air outlet 26, and the filter screen 13 is installed at the ambient air inlet 25. In the middle of the casing, the inner core 1 of the heat exchanger is fixed by the lower sealing strip 11, the upper sealing strip 12, the inner core bending plate 7, the bending plate 8 and the sealing strip. Silicone to seal and ensure the sealing and isolation of the two air ducts;

The inner core 1 of the heat exchanger can be a plate-fin type, partition type or other heat exchanger structure, which directly affects the heat transfer coefficient and structural size of the heat exchanger of the present invention;

A program controller 9 is installed on the right under the casing 4;

A port socket 15 and a power socket 16 are installed on the back of the casing;

The casing cover plate 18 is folded at the periphery of the casing cover plate 18, and a rivet screw hole is formed on the top corresponding to the casing rivet nut 6. The casing cover plate 18 and the casing 4 are sealed by a sealing ring 19 and fixed by screws. ;

The heater is fixed on a bracket by the heater block 20 and the fan 21, and is independently placed in the cabinet where convection heat transfer is good;

The centrifugal fan 2 and the fan 3 are respectively installed at the inner circulation return air outlet 23 under the casing 4 and the ambient air outlet 26 on the right side, and are used to pump the hot air inside the cabinet and the cold air outside the environment;

Filter screen one 13 and filter screen two 14 are multi-mesh filter screens, which can filter out dust, impurities, etc. in the air;

The utility model combined with the above-mentioned components provides an innovative structure of a cabinet heat exchanger. In Figures 1, 4 and 5, in actual operation and application, the positioning pin 5 can be used to pass through the positioning of the cabinet. On the hole, the fixing screw 22 is directly locked with the rivet nut 17 to fix the air-to-air heat exchanger at a specific position in the cabinet, and the port socket 15 is connected to the cabinet control board and the heater, and the heater block can be turned on in due course according to the temperature inside the cabinet 20. Fan 21, centrifugal fan 2, and fan 3, so as to effectively control the normal working temperature of the cabinet, and at the same time prevent the dust, water vapor, and impurities in the external environment from directly intruding through the vents, causing the components in the cabinet to fail. Ensure the working environment in the cabinet and improve the performance of the cabinet.

Claims (6)

1. An air-to-air heat exchanger, comprising: a housing connected to the cabinet and provided with an accommodating space, a plurality of air ports are opened on the housing, and heat exchanger components are arranged inside the housing , characterized in that: the heat exchanger component includes at least two fans, a heat exchanger inner core and a heater, and the inner wall of the housing is provided with an air return port and an air outlet for the circulating air in the cabinet and correspondingly circulates the air return port in the cabinet A centrifugal fan is installed, and the ambient air inlet and outlet are provided on the two side walls of the casing, and a fan is installed at the ambient air outlet accordingly. The inner core of the heat exchanger is arranged in the center of the casing, and the inside of the casing is sealed and isolated. It is the circulating air path in the cabinet and the ambient air circulating air path. A heater, a fan and a temperature sensor are arranged in the cabinet where the air-to-air heat exchanger is installed, and a program controller is arranged in the casing. A power interface and a control port are provided at the circulating air outlet in the cabinet, and the interior of the housing is sealed and isolated from the external environment of the housing. 2. The air-to-air heat exchanger according to claim 1, characterized in that: the heat exchange plate in the inner core of the heat exchanger has many protrusions or depressions obtained by deep drawing, which increases the heat exchange area, Increased fluid turbulence. The inner core of the heat exchanger can be a plate-fin type, a partition type or other heat exchangers. 3. The air-to-air heat exchanger according to claim 1, characterized in that it has two positioning pins on the top and two rivet nuts on the bottom, which facilitates assembly with the cabinet and fixes the heat exchanger. 4. The air-to-air heat exchanger according to claim 1, characterized in that: there is at least one program controller and at least one temperature sensor, the actual temperature in the cabinet is measured by means of the temperature sensor in the cabinet, and the program control Compared with a stored and predetermined rated value in the device, if the measured parameter value deviates from the rated value, the program controller will start the selected program, such as turning on or off the internal circulation fan, and the environmental circulation fan On or off, heater on or off. 5. The air-to-air heat exchanger according to claim 1, characterized in that: a heater and a temperature sensor are arranged in the cabinet where the air-to-air heat exchanger is installed. 6. The air-to-air heat exchanger according to claim 1, characterized in that: a power interface and a control port are provided at the circulating air outlet in the cabinet.

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