Air inlet device of air cooler

Abstract

The utility model provides an air inlet device of an air cooler, and relates to the technical field of air coolers. The air cooler comprises a plurality of horizontal heat exchange tubes which are arranged in a matrix mode, the two ends of each heat exchange tube are connected with an air cooler shell, a heat dissipation channel is arranged on the outer sides of the heat exchange tubes located in the same column in the vertical direction, and the heat dissipation channel comprises a plurality of airflow adjusting units arranged on the peripheries of the heat exchange tubes respectively. Each airflow adjusting unit comprises two flow guide plates which are arranged on the two sides of the heat exchange pipe and rotationally connected with the air cooler shell, the temperature probe is arranged on the heat exchange pipe, the control system is electrically connected with the temperature probe and the driving source, and the heat dissipation channel further comprises an air guide channel arranged between every two vertically adjacent airflow adjusting units. And the guide plate rotates to be far away from the lower air guide channel to form an air inlet between the guide plate and the lower air guide channel or contact with the lower air guide channel to realize sealing. The heat exchanger is provided with multiple layers of heat exchange pipes to increase the heat exchange area, and the air inlet amount is adjusted according to the temperature of the heat exchange pipes to prevent the heat exchange pipes from being frozen or overhigh in temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of air coolers, in particular to an air inlet device for an air cooler. Background Art

[0002] Air cooler is the abbreviation of air cooler, which is a heat exchange equipment used for condensation and cooling in petrochemical and oil and gas processing. In order to save energy and reduce consumption, air coolers are used to cool various media. Air coolers are particularly widely used in the north, mainly because the temperature in the north is low in winter, which provides a cold source for cooling materials.

[0003] In the prior art, in order to further increase the heat exchange area of ​​the air cooler, either the length of the heat exchange tube bundle is increased or the number of layers of the heat exchange tube bundle is increased. Increasing the length of the heat exchange tube bundle will increase the floor space of the air cooler, which is not very suitable when the site area is limited. Therefore, increasing the number of layers of the heat exchange tube bundle is more feasible.

[0004] However, the cold air from the bottom of the air cooler cools the material inside the tube bundle. However, since the lowest temperature in the north is around minus 30 degrees Celsius, the cold air that the tube bundle pipes in the bottom layer of the air cooler are exposed to is the coldest and has the greatest cooling capacity. Especially when there are many tube bundle layers and the air intake needs to be increased, a large amount of cold air can easily freeze the bottom tube bundle and the material. In order to avoid this, the air intake cannot be too large, which means that the number of tube bundle layers cannot exceed 3-4, and the purpose of increasing the heat exchange area cannot be achieved.

[0005] Even when using air coolers in southern cities, multi-layer air-cooling tube bundles cannot be set up. The main reason is that when the cold air flows from bottom to top and exchanges heat with the 3-4 layers of tube bundles below, the air temperature is very close to the actual temperature of the tube bundle, and heat exchange and cooling of the tube bundle can no longer be achieved. No matter how many layers of the tube bundle there are, it is meaningless and the purpose of increasing the heat exchange area cannot be achieved. Utility Model Content

[0006] The utility model aims to develop an air cooler air inlet device with multi-layer heat exchange tubes to increase the heat exchange area and adjust the air intake according to the temperature of the heat exchange tubes to avoid freezing of the heat exchange tubes or excessive temperature.

[0007] The utility model is achieved through the following technical solutions:

[0008] An air inlet device for an air cooler, comprising:

[0009] A plurality of heat exchange tubes arranged horizontally in a matrix, with both ends of the heat exchange tubes connected to the air cooler shell;

[0010] The heat dissipation channel is arranged outside a plurality of heat exchange tubes in the same row in the vertical direction. The heat dissipation channel includes a plurality of airflow adjustment units respectively arranged outside the plurality of heat exchange tubes. The airflow adjustment units include:

[0011] Two guide plates are arranged on both sides of the heat exchange tube and are rotatably connected to the air cooler shell;

[0012] A driving source for driving the guide plate to rotate is arranged on the air cooler shell;

[0013] Temperature probe, installed on the heat exchange tube;

[0014] A control system, electrically connected to the temperature probe and the driving source;

[0015] Wherein, the heat dissipation channel also includes an air duct arranged between two upper and lower adjacent air flow adjustment units, and the guide plate can rotate away from the lower air duct to form an air inlet between the two or contact with the lower air duct to achieve sealing.

[0016] Optionally, two ends of the top of the guide plate are rotatably connected to the air cooler shell at two ends of the heat exchange tube respectively, and a driving motor serving as a driving source to drive the guide plate to swing is provided at a corresponding position of the air cooler shell.

[0017] Optionally, the two guide plates in the airflow adjustment unit are symmetrically arranged on both sides of the heat exchange tube, the two guide plates are inclined, and the tops of the two guide plates are inclined toward the side away from the heat exchange tube.

[0018] Optionally, the air duct includes two symmetrically arranged bending plates, and the two bending plates are respectively located between two guide plates of two upper and lower adjacent airflow adjustment units.

[0019] Optionally, two ends of the bending plate are respectively connected to the air cooler shell at two ends of the heat exchange tube, and the two bending plates are respectively in rolling contact with the tops of two guide plates of the lower airflow adjustment unit.

[0020] Optionally, the bending plate includes a first horizontal portion and a first inclined portion that are connected to each other, one end of the first horizontal portion is in rolling contact with the top of the guide plate of the lower airflow adjustment unit, the other end of the first horizontal portion extends inward and is connected to the first inclined portion, the bottom end of the first inclined portion is connected to the first horizontal portion, the top end of the first inclined portion is inclined outward, and the top end of the first inclined portion is on the swinging trajectory of the bottom end of the guide plate corresponding to the upper airflow adjustment unit.

[0021] Optionally, a wind shield is further provided at the lower part of the two guide plates of the lowest airflow adjustment unit in the heat dissipation channel, and both ends of the wind shield are connected to the air cooler shell at both ends of the heat exchange tube.

[0022] Optionally, the wind shield includes a second horizontal portion directly below the middle of the two guide plates, and two symmetrical second inclined portions are respectively connected to both ends of the second horizontal portion. The top ends of the two second inclined portions are inclined outward, and the top ends of the two second inclined portions are on the swinging trajectory of the bottom end of the guide plate of the lowest airflow adjustment unit.

[0023] The beneficial effects of the utility model are:

[0024] The utility model increases the number of layers of heat exchange tubes and improves the heat exchange area of ​​the air cooler, and is also suitable for cold weather in the north and hot weather in the south. Each heat exchange tube is assisted by an independent airflow adjustment unit for temperature control. When the heat exchange tube is easily frozen at low temperature, the air inlet can be automatically closed to prevent the heat exchange tube from further decreasing in temperature and being frozen. When the temperature of the heat exchange tube rises and the airflow of the fan cannot meet the cooling needs, the air inlet can be automatically opened to introduce external airflow to assist in cooling, and the opening degree of the air inlet increases with the increase in the temperature of the heat exchange tube. In low temperature weather, the air inlet will not be opened too much, causing the heat exchange tube to be overly cooled and frozen. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be 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 paying creative work.

[0026] Figure 1 It is a schematic diagram of the structure of the utility model;

[0027] Figure 2 Schematic diagram of the airflow adjustment unit structure. DETAILED DESCRIPTION

[0028] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0029] In the description of the present invention, 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0030] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0031] like Figure 1 and Figure 2 As shown, the utility model discloses an air inlet device for an air cooler, comprising a plurality of heat exchange tubes 100 arranged horizontally and parallel to each other, both ends of the plurality of heat exchange tubes 100 being connected to an air cooler shell, the plurality of heat exchange tubes 100 being arranged in a matrix, and heat dissipation channels 200 are provided on the outer sides of the plurality of heat exchange tubes 100 in the same column in the vertical direction.

[0032] The heat dissipation channel 200 includes a plurality of airflow adjustment units 201 respectively arranged on the periphery of a plurality of heat exchange tubes 100 in the same row. The plurality of airflow adjustment units 201 are connected in sequence. The airflow passes through the plurality of airflow adjustment units 201 in sequence from bottom to top in the heat dissipation channel 200 and is then output. The airflow exchanges heat with the corresponding heat exchange tubes 100 in the airflow adjustment units 201.

[0033] The airflow adjustment unit 201 includes two guide plates 2011 rotatably arranged on both sides of the heat exchange tube 100. The two guide plates 2011 are symmetrically arranged on both sides of the heat exchange tube 100. The two guide plates 2011 are both inclined, and the tops of the two guide plates 2011 are inclined away from the heat exchange tube 100.

[0034] The two ends of the top of the two guide plates 2011 are rotatably connected to the air cooler shell at the two ends of the heat exchange tube 100 respectively, and a driving motor for driving the guide plates 2011 to swing is provided at a corresponding position on the air cooler shell.

[0035] In the heat dissipation channel 200, an air duct 202 is provided between two upper and lower adjacent airflow adjustment units 201, and the airflow in the lower airflow adjustment unit 201 is sent to the upper airflow adjustment unit 201 through the air duct 202. The air duct 202 includes two symmetrically arranged bending plates 2021, and the two bending plates 2021 are respectively located between the two guide plates 2011 of the upper and lower adjacent airflow adjustment units 201, and the two ends of the bending plates 2021 are respectively connected to the air cooler shell at the two ends of the heat exchange tube 100, and the two bending plates 2021 are respectively in rolling contact with the top of the two guide plates 2011 of the lower airflow adjustment unit 201.

[0036] The bending plate 2021 includes a first horizontal portion 20211 and a first inclined portion 20212 connected to each other, one end of the first horizontal portion 20211 is in rolling contact with the top of the corresponding guide plate 2011, and the other end of the first horizontal portion 20211 extends inwardly and is connected to the first inclined portion 20212. The bottom end of the first inclined portion 20212 is connected to the first horizontal portion 20211, and the top end of the first inclined portion 20212 is inclined outwardly, and the top end of the first inclined portion 20212 is on the swing track of the bottom end of the guide plate 2011 corresponding to the upper airflow adjustment unit 201.

[0037] The two guide plates 2011 of the airflow adjustment unit 201 swing so that the bottom ends of the two guide plates 2011 can contact the top end of the first inclined portion 20212 of the lower air duct 202 respectively, thereby achieving sealing between the airflow adjustment unit 201 and the outside.

[0038] The two guide plates 2011 of the airflow adjustment unit 201 swing so that the bottom ends of the two guide plates 2011 are respectively away from the top of the first inclined portion 20212 of the lower air duct 202, and an air inlet appears between the two guide plates 2011 and the lower air duct 202, so that the external airflow can enter the airflow adjustment unit 201 through the air inlet.

[0039] A wind shield 203 is also provided at the lower part of the two guide plates 2011 of the lowest airflow adjustment unit 201 in the heat dissipation channel 200, and the two ends of the wind shield 203 are connected to the air cooler shell at the two ends of the heat exchange tube 100. The wind shield 203 includes a second horizontal portion 2031 located just below the middle of the two guide plates 2011, and two symmetrical second inclined portions 2032 are connected to the two ends of the second horizontal portion 2031, respectively. The two second inclined portions 2032 have the same structure and function as the first inclined portion 20212, and the top ends of the two second inclined portions 2032 are also inclined in a direction away from the heat exchange tube 100, and the top ends of the two second inclined portions 2032 are on the swing track of the bottom end of the guide plate 2011 of the lowest airflow adjustment unit 201.

[0040] The airflow adjustment unit 201 also includes a temperature probe 2012 disposed on the top of the heat exchange tube 100, and the temperature probe 2012 monitors the temperature of the heat exchange tube 100. The air intake device also includes a control system, and the drive motor and the temperature probe 2012 are electrically connected to the control system. Each airflow adjustment unit 201 operates independently, and the two drive motors driving the two guide plates 2011 in the airflow adjustment unit 201 operate according to the temperature of the heat exchange tube 100 monitored by the temperature probe 2012. The lower the temperature of the heat exchange tube 100, the lower end of the guide plate 2011 swings toward the direction close to the lower air duct 202, and the air inlet gradually decreases until it is closed. Conversely, the higher the temperature of the heat exchange tube 100, the lower end of the guide plate 2011 swings toward the direction away from the lower air duct 202, and the air inlet gradually increases until it reaches the maximum opening and closing degree.

[0041] The closing temperature of the air inlet and the maximum opening of the air inlet are set according to the usage scenario. The maximum opening of the air inlet is also the maximum angle at which the guide plate 2011 swings inward. A fan is set below the multiple heat exchange tubes 100. The fan generates an upward airflow when it is running. The airflow passes through the multiple heat dissipation channels 200 and is output. In this process, the airflow exchanges heat and cools the heat exchange tubes 100, thereby achieving the purpose of cooling the material inside the heat exchange tubes 100.

[0042] When the air cooler is running, when the temperature probe 2012 detects that the temperature of a certain heat exchange tube 100 is lower than the shutdown temperature, the two driving motors of the air flow adjustment unit 201 where the heat exchange tube 100 is located start to operate, and the bottom ends of the two guide plates 2011 swing outward until the bottom ends of the guide plates 2011 contact the bending plate 2021, so that the air inlet is closed to prevent the heat exchange tube 100 from being frozen. When the temperature detected by the temperature probe 2012 on a certain heat exchange tube 100 is greater than the shutdown temperature, the two driving motors of the airflow adjustment unit 201 where the heat exchange tube 100 is located start to operate, and the bottom ends of the two guide plates 2011 swing inwardly away from the bending plate 2021, and an air inlet is formed between the two guide plates 2011 and the air duct 202 below. External cold air can enter through the air inlet and participate in the heat exchange of the heat exchange tube 100. The higher the temperature of the heat exchange tube 100 detected by the temperature probe 2012, the greater the inward swing amplitude of the guide plate 2011, the larger the air inlet formed, the more cold air from the outside enters, and the better the heat exchange tube 100 can be cooled.

[0043] The utility model increases the number of layers of the heat exchange tubes 100 and improves the heat exchange area of ​​the air cooler while being suitable for cold weather in the north and hot weather in the south. Each heat exchange tube 100 is assisted by an independent airflow adjustment unit 201 for temperature control. When the heat exchange tube 100 is easily frozen at low temperatures, the air inlet can be automatically closed to prevent the heat exchange tube 100 from further decreasing in temperature and being frozen. When the temperature of the heat exchange tube 100 rises and the airflow of the fan cannot meet the cooling needs, the air inlet can be automatically opened to introduce external airflow to assist in cooling, and the opening degree of the air inlet increases with the increase in the temperature of the heat exchange tube 100. In low temperature weather, the air inlet will not be opened too much, causing the heat exchange tube 100 to cool excessively and be frozen.

[0044] The above embodiments are only preferred embodiments of the present utility model and are not limitations on the technical solutions of the present utility model. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present utility model.

Claims

1. An air inlet device for an air cooler, characterized in that: include: A plurality of heat exchange tubes arranged horizontally in a matrix, with both ends of the heat exchange tubes connected to the air cooler shell; The heat dissipation channel is arranged outside a plurality of heat exchange tubes in the same row in the vertical direction. The heat dissipation channel includes a plurality of airflow adjustment units respectively arranged outside the plurality of heat exchange tubes. The airflow adjustment units include: Two guide plates are arranged on both sides of the heat exchange tube and are rotatably connected to the air cooler shell; A driving source for driving the guide plate to rotate is arranged on the air cooler shell; Temperature probe, installed on the heat exchange tube; A control system, electrically connected to the temperature probe and the driving source; Wherein, the heat dissipation channel also includes an air duct arranged between two upper and lower adjacent air flow adjustment units, and the guide plate can rotate away from the lower air duct to form an air inlet between the two or contact with the lower air duct to achieve sealing.

2. The air inlet device for an air cooler according to claim 1, characterized in that: The two ends of the top of the guide plate are rotatably connected to the air cooler shell at the two ends of the heat exchange tube respectively, and a driving motor serving as a driving source to drive the guide plate to swing is provided at a corresponding position of the air cooler shell.

3. The air inlet device for an air cooler according to claim 2, characterized in that: The two guide plates in the airflow adjustment unit are symmetrically arranged on both sides of the heat exchange tube, the two guide plates are inclined, and the tops of the two guide plates are inclined toward the side away from the heat exchange tube.

4. The air inlet device for an air cooler according to claim 2, characterized in that: The air duct comprises two symmetrically arranged bending plates, and the two bending plates are respectively located between two guide plates of two upper and lower adjacent airflow adjustment units.

5. The air inlet device for an air cooler according to claim 4, characterized in that: The two ends of the bending plate are respectively connected to the air cooler shell at the two ends of the heat exchange tube, and the two bending plates are respectively in rolling contact with the tops of the two guide plates of the lower airflow adjustment unit.

6. The air inlet device for an air cooler according to claim 5, characterized in that: The bending plate includes a first horizontal portion and a first inclined portion that are connected to each other, one end of the first horizontal portion is in rolling contact with the top of the guide plate of the lower airflow adjustment unit, the other end of the first horizontal portion extends inward and is connected to the first inclined portion, the bottom end of the first inclined portion is connected to the first horizontal portion, the top end of the first inclined portion is inclined outward, and the top end of the first inclined portion is on the swinging trajectory of the bottom end of the guide plate corresponding to the upper airflow adjustment unit.

7. The air inlet device for an air cooler according to claim 1, characterized in that: A wind shield is also provided at the lower part of the two guide plates of the lowest airflow adjustment unit in the heat dissipation channel, and both ends of the wind shield are connected to the air cooler shell at both ends of the heat exchange tube.

8. The air inlet device for an air cooler according to claim 7, characterized in that: The wind shield includes a second horizontal portion located directly below the middle of the two guide plates, and two symmetrical second inclined portions are connected to both ends of the second horizontal portion. The top ends of the two second inclined portions are inclined outward, and the top ends of the two second inclined portions are located on the swinging trajectory of the bottom end of the guide plate of the lowest airflow adjustment unit.

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