CN118493071A - Multistage heat exchange box and control method - Google Patents
Multistage heat exchange box and control method Download PDFInfo
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- CN118493071A CN118493071A CN202410977540.9A CN202410977540A CN118493071A CN 118493071 A CN118493071 A CN 118493071A CN 202410977540 A CN202410977540 A CN 202410977540A CN 118493071 A CN118493071 A CN 118493071A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
- B23Q11/126—Arrangements for cooling or lubricating parts of the machine for cooling only
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- Auxiliary Devices For Machine Tools (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention relates to the technical field of machining cooling devices, in particular to a multistage heat exchange box and a control method, wherein the multistage heat exchange box comprises a box body, and a heat exchanger is arranged in the box body; the heat exchanger comprises U-shaped pipes and cooling fins; all the radiating fins form a whole A; the U-shaped pipe comprises a first end part and a second end part; all the first end parts form a liquid return group, and all the second end parts form a liquid inlet group; the liquid return group outer cover is provided with a liquid return structure, and the liquid inlet group outer cover is provided with a liquid inlet structure; the liquid return structure is configured to: the cooling liquid flowing out of all the first end parts is led into the cooling liquid input end of the machine tool through the leading-out end after being collected, and the temperature of the cooling liquid flowing out of the leading-out end is monitored; the liquid inlet structure is configured to: according to the cooling requirement, the cooling liquid output by the cooling liquid output end of the machine tool is synchronously led in through the leading-in endThe second end part is internally provided with two heat dissipation fans which are arranged on the box body; the invention can effectively radiate the cooling liquid from the machine tool, and the radiating efficiency can be adjusted.
Description
Technical Field
The invention relates to the technical field of machining cooling devices, in particular to a multistage heat exchange box and a control method.
Background
During machining of a machine tool, a great amount of heat is generated by machining friction, cutting heat and motor operation, and if the heat cannot be effectively dissipated and controlled, equipment is overheated, machining precision is affected, and even machine tool parts are damaged. In the heat dissipation process of the machine tool, because a plurality of structures requiring heat dissipation exist in the machine tool, a liquid cooling system is installed in part of the machine tool to dissipate heat of the machine tool.
And cooling liquid is adopted in the liquid cooling system to dissipate heat of the machine tool. The heat in the machine tool is taken away by the flow of the cooling liquid in the machine tool, so that the machine tool is kept in a target temperature range, and the machining precision and the like are ensured.
However, with the continuous increase of the working time of the machine tool, the heat generated by the machine tool can be gradually increased, and the temperature of the cooling liquid with fixed heat dissipation efficiency can be gradually increased. Therefore, the cooling liquid flowing out of the machine tool needs to be cooled, so that the temperature of the cooling liquid input into the machine tool is ensured to be lower than the temperature of the machine tool, and the heat in the machine tool is conveniently taken away in the later stage.
Part of the prior art adopts the mode of directly blowing air flow or leading in a radiator to realize the purpose of cooling the cooling liquid flowing out of the machine tool.
However, in the above-described methods, the heat radiation efficiency is fixed, and when the temperature of the input coolant gradually increases, it is difficult to maintain the output coolant in the target temperature range, and the machining accuracy of the machine tool is affected.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a multistage heat exchange box and a control method, which are used for solving the technical problem that the temperature of cooling liquid input into a machine tool is difficult to control accurately in the prior art.
In a first aspect of the invention, a multi-stage heat exchange box is provided, comprising a box body, wherein a placing cavity is arranged in the box body;
A heat exchanger is arranged in the placing cavity;
The heat exchanger comprises A plurality of U-shaped pipes which are horizontally arranged and a plurality of radiating fins which are vertically arranged,；
All the radiating fins form a whole A;
The U-shaped pipe comprises two side arms, a middle arm, a first end part and a second end part;
The U-shaped pipes are sequentially distributed in the vertical direction;
All middle arms are arranged outside the first end of the whole body A;
the end parts of all the side arms deviating from the corresponding middle arms penetrate through the whole A and then are communicated with the space outside the second end of the whole A;
all the first end parts form a liquid return group, and all the second end parts are sequentially distributed at equal intervals in the vertical direction and form a liquid inlet group;
The liquid return group outer cover is provided with a liquid return structure, and the liquid inlet group outer cover is provided with a liquid inlet structure;
The liquid return structure is configured to: the cooling liquid flowing out of all the first end parts is led into the cooling liquid input end of the machine tool through the leading-out end after being collected, and the temperature of the cooling liquid flowing out of the leading-out end is monitored;
The liquid inlet structure is configured to: according to the cooling requirement, the cooling liquid output by the cooling liquid output end of the machine tool is synchronously led in through the leading-in end In the second end part, monitoring the temperature of the cooling liquid flowing into the leading-in end; wherein the cooling liquid is introduced intoThe adjacent end part II of the end parts II has no end part II which is not introduced with the cooling liquid and is introduced with the cooling liquidOne of the second end parts is positioned at the outermost side of all the second end parts, the other second end parts are closed,;
The top and the top of the placing cavity are respectively provided with a radiating hole communicated with the external space of the box body, and a radiating fan is arranged in each radiating hole;
a heat radiation grille is arranged on the side part of the placing cavity;
the liquid return structure, the liquid inlet structure and the heat dissipation fan are all connected with a controller arranged on the box body.
Further, the liquid inlet structure comprises a leading-in end, a liquid inlet shell, a first temperature sensor, a motor, a driving wheel, a second temperature sensor, a third temperature sensor and a fourth temperature sensor,The gears and the liquid inlet holes;
the liquid inlet shell is covered outside the liquid inlet group and forms a cavity A with the whole A;
The cavity A is arranged in the vertical direction at equal intervals in a rotary way Each gear covers one end part II, and adjacent gears are meshed with each other; the gears are numbered in sequence, and are a gear No. 1, a gear No. 2, a gear from top to bottom,A number gear;
the driving wheel is rotatably arranged in the cavity A and is connected with the No. 1 or the No. 1 The number gears are meshed;
the driving wheel is also connected with a motor arranged outside the liquid inlet shell;
the number gear is provided with the components which are arranged around the axis at equal intervals A liquid inlet hole;；
the distribution positions of all the liquid inlet holes on the whole gear structure satisfy the following conditions: when (when) When the second end portion is introduced with the cooling liquid,The second end part is respectively communicated with one liquid inlet hole on the corresponding gear, and the second remaining end part is sealed by the corresponding gear; wherein,The second end part into which the cooling liquid is introduced is selfThe corresponding end parts of the number gears are sequentially selected along the extending direction of the liquid inlet group;
The leading-in end is arranged outside the liquid inlet shell, is communicated with the cavity A, and is provided with a first temperature sensor;
and the motor and the first temperature sensor are respectively connected with the controller.
Further, the liquid return structure comprises a lead-out end, a liquid return shell and a second temperature sensor;
the liquid return shell is covered outside the liquid return group and forms a cavity B with the whole body A;
The leading-out end is arranged outside the liquid return shell and is communicated with the cavity B, and a second temperature sensor is arranged on the leading-out end.
Further, the end part of the lead-out end, which is far away from the liquid return shell, penetrates through the box body and is arranged at the outer side of the box body, and the second temperature sensor is arranged on the part of the lead-out end, which is arranged at the outer side of the box body;
The part of the leading-out end arranged in the box body and the liquid return shell form a whole B, a heating device is covered outside the whole B, and the heating device is connected with the controller.
Further, the heating device is arranged in an independent cavity in the box body.
Further, the top and the bottom of independent chamber all are equipped with the heat dissipation passageway, all install the fly leaf that is used for opening and close in every heat dissipation passageway.
Further, a pressure valve is arranged in the first end part; the pressure valve is configured to open in response to the pressure in the U-tube exceeding a preset value.
The second aspect of the invention also provides a control method for controlling the temperature of the machine tool cooling liquid by using the multi-stage heat exchange box, which comprises the following steps:
Acquiring monitoring data of the first temperature sensor and the second temperature sensor at the current moment, and if the monitoring data of the first temperature sensor at the current moment is higher than a set value A, performing the step A to enable the monitoring data of the second temperature sensor to be in a target range;
the step A comprises the following steps:
acquiring the number of end parts II which are required to be opened at the current moment according to the monitoring data of the temperature sensor I and the temperature sensor II According to the number of openingControlling the motor to rotate to make the motor selfThe two ends corresponding to the number gears are sequentially selected along the extending direction of the liquid inlet groupThe second end part is coaxially distributed with one liquid inlet hole on the corresponding gear respectively;
according to the monitoring data of the first temperature sensor and the second temperature sensor, the number of the radiating fans required to be started at the current moment is obtained, and the corresponding number of the radiating fans are started; when the opening number is 1, the two radiating fans are operated alternately.
Further, the control method further includes:
if the monitoring data of the first temperature sensor at the current moment is lower than the set value B, performing the step B to enable the monitoring data of the second temperature sensor to be in a target range;
the step B comprises the following steps:
and controlling the heating device to heat the whole B.
Further, if the monitoring data of the first temperature sensor at the current moment is lower than the set value B, the heat dissipation channel is closed, then the step B is carried out, the monitoring data of the second temperature sensor is in the target range, and after the monitoring data of the second temperature sensor is in the target range, the heat dissipation channel is opened.
The invention has the beneficial effects that:
1. By setting up The U-shaped pipes and the liquid inlet structure enable the equipment to select different numbers of U-shaped pipes to participate in heat dissipation according to the needs, effectively improve the heat dissipation efficiency, and simultaneously achieve the purpose of adjustable heat dissipation efficiency;
2. The arrangement of the double heat dissipation fans can increase the heat dissipation capacity of the equipment on one hand, and can realize disturbance on the surface of the heat exchanger on the other hand, so that the equipment is convenient to clean, and the heat dissipation efficiency is guaranteed.
Drawings
FIG. 1 is a perspective view of a multi-stage heat exchange box according to embodiment 1;
fig. 2 is a perspective view of a multistage heat exchange box of embodiment 1 with the box cover removed;
FIG. 3 is a schematic view of the heat exchanger in embodiment 1;
FIG. 4 is an exploded view of the liquid inlet structure, liquid return structure and heat exchanger as a whole;
fig. 5 is a perspective view of the case cover.
In the figure:
1. A case; 2. a placement cavity; 3. a heat exchanger; 4. a heat sink; 5. a U-shaped tube; 6. an end part I; 7. an end part II; 8. a lead-out end; 9. an introduction end; 10. a heat radiation hole; 11. a heat dissipation fan; 12. a controller; 13. a liquid inlet housing; 14. a first temperature sensor; 15. a liquid inlet hole; 16. a liquid return shell; 17. a second temperature sensor; 18. an independent cavity; 19. a pressure valve; 20. a gear; 21. a motor; 22. a driving wheel; 23. a case cover; 24. a fixed rod; 25. a motor slot.
Detailed Description
Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those having ordinary skill in the art to which the invention pertains will readily implement the embodiments, but the present invention may be implemented in various different forms, so that the present invention is not limited to the embodiments described hereinafter, and in addition, components not connected to the present invention will be omitted from the drawings for more clarity of description.
In order to solve the technical problems that the machine tool machining efficiency is affected when an air cooling or fixed radiator is adopted to radiate the machine tool cooling liquid in the prior art, such as fixed radiating efficiency, untimely radiating of the high-temperature cooling liquid, substandard temperature of the cooling liquid after radiating and the like, the invention provides a multistage heat exchange box which is used for solving the problems.
In order to facilitate understanding of the technical scheme of the present application, the technical scheme of the present application will be described in detail below with reference to specific embodiments and accompanying drawings.
Example 1
With reference to fig. 1-5, this embodiment provides a multi-stage heat exchange box, which includes a box body 1, and a placement cavity 2 is disposed in the box body 1 and is used for placing a heat exchanger 3.
A box cover 23 is arranged on the box body 1, so that the placing cavity 2 can be conveniently opened or closed;
In order to facilitate heat dissipation of the heat exchanger 3, heat dissipation holes 10 are respectively formed in the top and the bottom of the box body 1, and a heat dissipation fan 11 is installed in each heat dissipation hole 10; the two can be selectively opened according to the requirement; the heat radiation hole 10 on the top of the case 1 is opened on the case cover 23.
In order to facilitate rapid discharge and heat dissipation of the wind flow when the two heat dissipation fans 11 are simultaneously opened, a heat dissipation grid is arranged on the side wall of the placement cavity 2 and used for rapid discharge of the hot wind flow into the placement cavity 2; the radiator grills are not shown (on the front and rear side walls of the cabinet 1).
In order to change the heat dissipation efficiency of the heat exchanger 3 as required, in the present embodiment, the heat exchanger 3 comprisesA plurality of horizontally arranged U-shaped pipes 5 and a plurality of vertically arranged cooling fins 4,In the present embodiment。
As shown in fig. 2 and 3, each heat sink 4 is vertically disposed in the placement chamber 2 and is connected to each other by a fixing rod 24 to form a whole; wherein all cooling fins 4 constitute the whole a.
The U-shaped pipes 5 are horizontal, and all the U-shaped pipes 5 are sequentially and equally distributed from top to bottom in the vertical direction.
The U-shaped tube 5 is made up of two side arms, one middle arm, end one 6 and end two 7.
The end part I6 and the end part II 7 are respectively the open ends of the two side arms; the other end of each side arm is connected with one end of the corresponding middle arm.
As shown in fig. 2, all middle arms are arranged on the right side of the whole body A, and the open ends of all side arms penetrate through the whole body A to be communicated with the space on the left side of the whole body A; the end part I, the end part II, the end part 7 and the left side wall of the whole A are coplanar, so that the cooling liquid input and output can be adjusted in the later stage.
All the first end parts 6 are sequentially arranged in the vertical direction and form a liquid return group, and all the second end parts 7 are sequentially arranged in the vertical direction at equal intervals and form a liquid inlet group.
Secondly, the liquid returning group outer cover is provided with a liquid returning structure attached to the whole A, and the liquid feeding group outer cover is provided with a liquid feeding structure attached to the whole A.
Wherein:
The liquid return structure is configured to: the cooling liquid flowing out of all the first end parts 6 is led into the cooling liquid input end of the machine tool through the leading-out end 8 after being collected, and the temperature of the cooling liquid flowing out of the leading-out end 8 is monitored.
The liquid inlet structure is configured to: according to the cooling requirement, the cooling liquid output by the cooling liquid output end of the machine tool is synchronously led in through the leading-in end 9In the second end 7, and monitors the temperature of the cooling liquid flowing into the leading-in end 9; wherein the cooling liquid is introduced intoBetween two adjacent ends 7 of the two ends 7, there is no end 7 into which the cooling liquid is not introduced, and the cooling liquid is introducedOne of the two end portions 7 is located at the outermost side of all the two end portions 7, the remaining two end portions 7 are closed,。
That is, the second ends 7 into which the coolant is introduced are adjacent to each other, and one is located at the outermost end of all the second ends 7.
And the liquid return structure, the liquid inlet structure and the heat dissipation fan 11 are all connected with a controller 12 arranged on the box body 1.
That is, the controller 12 controls the operation of the device.
When the equipment is operated, the controller 12 controls the liquid return structure, the liquid inlet structure and the heat radiation fan 11; the process of controlling the temperature of the machine tool cooling liquid by the control equipment comprises the following steps:
The controller 12 obtains the monitoring data of the coolant flowing into the inlet 9 of the liquid inlet structure at the current moment, and then determines whether the monitoring data exceeds a set value a (the set value a is preset, for example, 35 °), if so, the step a is performed so that the temperature data of the coolant flowing out of the outlet 8 detected by the liquid return structure is in a target range (for example, 28 ° to the set value a, where the set value a=35°).
Wherein, step A is:
The controller 12 obtains the temperature data of the coolant flowing out of the outlet end 8 monitored by the liquid retrieving structure and the monitoring data of the coolant flowing in of the inlet end 9 in the liquid inlet structure, and obtains the number of the two ends 7 which should be opened at the current moment according to the two monitoring data And according to the obtained quantityControlling the action of the liquid inlet structure to enable the liquid inlet structure to be openedThe two end parts 7 are opened and are communicated with the leading-in end 9, so that the cooling liquid output by the cooling liquid output end of the machine tool can synchronously flow into the opened state after being led into the liquid inlet structure through the leading-in end 9In the second end 7, the coolant flowing in is flowing through the correspondingAfter cooling the U-shaped pipes 5 and the whole A, the corresponding cooling process is carried outOne end 6 flows out and finally flows into the cooling liquid input end of the machine tool through the outlet end 8 on the liquid return structure.
In order to improve the heat dissipation efficiency, the step a further includes:
The controller 12 obtains the number of the heat dissipation fans 11 to be started according to the obtained temperature data of the coolant flowing out of the outlet end 8 monitored by the liquid return structure and the obtained monitoring data of the coolant flowing in of the inlet end 9 in the liquid inlet structure, and then starts the heat dissipation fans 11 according to the determined number of the heat dissipation fans 11 to be started; when one heat dissipation fan 11 is selected to be turned on, after one heat dissipation fan 11 is turned on for a certain period of time, the other heat dissipation fan 11 is turned off, so that the stable operation of the equipment is ensured, and the disturbance effect of wind flow can be increased; when both the two heat dissipation fans 11 are opened, the arrangement is not needed, and when the two heat dissipation fans 11 are synchronously opened, the heat-absorbed air flows out through the heat dissipation grille; when one heat dissipation fan 11 is opened, the heat absorbed air flows out through the heat dissipation grille and the heat dissipation holes 10 where the other heat dissipation fan 11 is positioned.
Wherein, the controller 12 obtains the temperature data of the coolant flowing out from the outlet end 8 monitored by the liquid retrieving structure and the monitoring data of the coolant flowing in from the inlet end 9 in the liquid inlet structure, and obtains the number of the two end parts 7 which should be opened at the current moment according to the two monitoring dataThe method comprises the following steps:
When the difference between the temperature data of the coolant flowing out of the outlet end 8 monitored by the liquid returning structure and the monitored data of the coolant flowing in of the inlet end 9 in the liquid feeding structure is smaller, and the temperature data of the coolant flowing out of the outlet end 8 monitored by the liquid returning structure is higher than the data in the set range, the current heat dissipation efficiency can not meet the heat dissipation requirement, and the rapid cooling of the coolant is realized by increasing the number of the opening ends two 7, the rotating speed of the heat dissipation fan 11, the number of the opening and the like.
When the temperature data of the coolant flowing out of the outlet end 8 monitored by the liquid return structure is in the target range and is kept stable, and the obtained temperature data of the coolant flowing out of the outlet end 8 monitored by the liquid return structure is kept stable with the fluctuation range of the monitored data difference of the coolant flowing in of the inlet end 9 in the liquid inlet structure, the current heat dissipation efficiency can be maintained, namely, the number of the two ends 7 which are opened at present, the number of the opened fans, the rotating speed and the like are kept.
That is, the controller 12 dynamically adjusts the number of the opened ends two 7 and the number and the rotation speed of the opened heat dissipation fans 11 according to the obtained temperature data of the coolant flowing out from the outlet end 8 monitored by the liquid return structure and the obtained monitoring data of the coolant flowing in from the inlet end 9 in the liquid inlet structure, so as to realize the dynamic adjustment of the heat dissipation efficiency, and ensure that the temperature of the coolant flowing into the coolant input end of the machine tool through the outlet end 8 is within the target range.
The regulation strategy may also be: a heat radiation fan 11 is firstly started, the rotation speed is kept low, and when the heat radiation efficiency needs to be increased, a strategy of increasing the opening quantity of the two end parts 7 is firstly executed until the heat radiation requirement is met; when the opening number of the second end 7 reaches the maximum and still cannot meet the heat dissipation requirement, executing the strategy of increasing the rotation speed of the heat dissipation fan 11, if the single heat dissipation fan 11 cannot meet the heat dissipation requirement, finally executing the strategy of opening the double heat dissipation fans 11 to dissipate heat, and when opening the double heat dissipation fans 11 to dissipate heat, executing the low-power-consumption opening strategy, for example, keeping the same and lower rotation speed on the premise of meeting the heat dissipation requirement.
By means of the strategy, the power consumption of the equipment can be effectively reduced.
Referring to fig. 4, in this embodiment, the liquid inlet structure includes a leading-in end 9, a liquid inlet housing 13, a first temperature sensor 14, a motor 21, a driving wheel 22, a liquid inlet hole 15, andA gear; The gears are numbered as gears No.1 and No.2 in turn from top to bottom, A number gear.
Wherein, the liquid inlet shell 13 is covered outside the liquid inlet group and forms a cavity A with the whole A;
the cavity A is internally and sequentially rotatably provided with a gear No.1, a gear No.2, a gear and a gear, A number gear, and the adjacent gears 20 are meshed with each other; each gear 20 covers one end portion two 7.
And the driving wheel 22 is also rotatably mounted in the cavity A and is connected with the number 1 orThe number gears are meshed to synchronously drive all gears 20 to rotate.
In the present embodiment, as shown in fig. 4, the driving wheel 22 is engaged with the No. 1 gear.
The driving wheel 22 is also connected with a motor 21 arranged outside the liquid inlet shell 13, the motor 21 is used for driving the driving wheel 22 to rotate in the forward and reverse directions, and the driving wheel 22 is arranged in a motor groove 25 in the box body 1.
Wherein,The number gear is provided with the components which are arranged around the axis at equal intervalsA plurality of liquid inlet holes 15;1。
As shown in the drawings, in the present embodiment,The corresponding gear 1 is provided with 1 liquid inlet hole 15, the gear 2 is provided with 2 liquid inlet holes 15, and the gear 3 is provided with 3 liquid inlet holes 15.
Referring to fig. 4, the liquid inlets 15 on each gear 20 are formed at equal intervals, for example, the interval is 120 °, wherein the No. 1 gear has only one liquid inlet 15, so that the arrangement is not needed; the included angle formed by the centers of the two liquid inlets 15 on the No. 2 gear and the axis of the gear 20 is 120 degrees, and the included angle formed by the centers of the two adjacent liquid inlets 15 on the No. 3 gear and the axis of the corresponding gear 20 is 120 degrees.
In the rotation process of the corresponding gear 20, the liquid inlet holes 15 on each gear 20 are in a state of being coaxially distributed with the corresponding second end part 7, and the corresponding second end part 7 is communicated with the cavity A when the liquid inlet holes are coaxially distributed, and at the moment, the corresponding second end part 7 is opened.
The opening positions of the liquid inlet holes 15 on the corresponding gears 20 and the relative arrangement positions of the liquid inlet holes 15 relative to the whole gears 20 satisfy the following conditions:
When the liquid inlet holes 15 on the No. 1 gear are communicated with the corresponding end part II 7, all other gears 20 are provided with one liquid inlet hole 15 communicated with the corresponding end part II 7, and all U-shaped pipes 5 are used for heat dissipation;
When the liquid inlet hole 15 on the No.1 gear is not communicated with the corresponding end part II 7, the liquid inlet hole is at most The U-shaped tubes 5 are used for heat dissipation and whenWhen the U-shaped pipes 5 are used for heat dissipation, all gears 20 below the No. 1 gear are provided with one liquid inlet hole 15 which is communicated with the corresponding end part two 7.
Correspondingly, when neededWhen the U-shaped pipes 5 radiate heat, the heat dissipation is selfThe number gears are sequentially selected in the direction of the liquid inlet groupEach gear 20 has one liquid inlet 15 communicated with the corresponding end part two 7, and the liquid inlets 15 of the other gears 20 are not communicated with the corresponding end part two 7.
Wherein, openTwo end portions 7, in this embodiment, are self-supportingThe second end parts 7 corresponding to the number gears are sequentially selected along the extending direction of the liquid inlet group, any second end part 7 after being selected is driven by the motor 21 to rotate until the second end part is coaxially distributed with the liquid inlet holes 15 on the corresponding gears 20, and the second end parts 7 are all closed by the corresponding gears 20.
For monitoring the corresponding temperature, in this embodiment, the inlet 9 is mounted outside the inlet housing 13 and is in communication with the cavity a, on which the first temperature sensor 14 is mounted, and the motor 21 and the first temperature sensor 14 are connected to the controller 12, respectively.
That is, the controller 12 acquires the monitoring data of the first temperature sensor 14 and controls the rotation of the motor 21 to realize the adjustment of the number of the hairpin tubes 5 participating in heat dissipation.
In this embodiment, the liquid return structure includes a lead-out end 8, a liquid return housing 16, and a second temperature sensor 17; wherein:
The liquid return shell 16 is covered outside the liquid return group and forms a cavity B with the whole body A;
The outlet end 8 is arranged outside the liquid return shell 16 and is communicated with the cavity B, and a second temperature sensor 17 is arranged on the outlet end.
The second temperature sensor 17 is connected to the controller 12 and is used for feeding back the temperature of the cooling liquid flowing out of the device.
Through the arrangement, the control method for controlling the temperature of the machine tool cooling liquid by the multi-stage heat exchange box provided by the embodiment comprises the following steps:
The controller 12 obtains the monitoring data of the first temperature sensor 14 and the second temperature sensor 17 at the current moment, if the monitoring data of the first temperature sensor 14 at the current moment is higher than the set value A, the step A is carried out, so that the monitoring data of the second temperature sensor 17 is in the target range;
the step A comprises the following steps:
the controller 12 obtains the number of the end parts two 7 required to be opened at the current moment according to the monitoring data of the temperature sensor one 14 and the temperature sensor two 17 According to the number of openingThe motor 21 is controlled to rotate to enableThe second end parts 7 are respectively and coaxially distributed with one liquid inlet hole 15 on the corresponding gear 20, and the other unselected second end parts 7 are still closed by the corresponding gear 20;
Secondly, the controller 12 also acquires the number of the heat dissipation fans 11 required to be started at the current moment according to the monitoring data of the first temperature sensor 14 and the second temperature sensor 17, starts the corresponding number of the heat dissipation fans 11, and simultaneously controls the rotating speed of the heat dissipation fans 11; in the process of opening the heat dissipation fans 11, as described above, when 1 is opened, the heat dissipation fans 11 are alternately opened, and when 2 heat dissipation fans 11 are opened, the heat dissipation fans are not alternately opened.
Through the arrangement, the heat dissipation efficiency of the cooling liquid can be effectively adjusted, so that the defects existing when the heat dissipation efficiency is fixed are avoided, and the machining precision of a machine tool is guaranteed.
Next, in order to further improve the heat radiation efficiency, a pressure valve 19 is further installed in each end portion 6, and the pressure valve 19 is configured such that when the pressure in the corresponding hairpin tube 5 reaches a set value, the pressure valve 19 is opened to allow the coolant therein to flow out.
Through the arrangement, the cooling liquid exists in each U-shaped pipe at any time, so that when the pipe is required to participate in cooling, the cooling liquid in the pipe can rapidly flow out to participate in circulating flow.
And the defect that the cooling liquid pressure in the machine tool is easy to drop when the hollow U-shaped pipe starts to participate in cooling liquid cooling can be effectively avoided.
Example 2
Referring to fig. 2, a part of the machine tools need to be in a set temperature range to ensure the best machining effect. However, the environment temperature of some machine tools is low due to weather, installation environment and the like, so that when the machine tools are initially started for processing, the processing precision is affected due to the fact that the temperature of the machine tools is lower than the target range. Therefore, in this embodiment, on the basis of embodiment 1, the end portion of the leading-out end 8 facing away from the liquid return housing 16 penetrates through the case 1 and is provided outside the case 1, and the second temperature sensor 17 is mounted on the portion of the leading-out end provided outside the case 1, and the portion of the leading-out end 8 provided inside the case 1 and the liquid return housing 16 are combined into a whole B, and the whole B is externally covered with a heating device, and the heating device is connected with the controller 12.
In order to improve the heating efficiency, in some embodiments, the heating device is further arranged in the independent cavity 18 in the box 1, so as to ensure the heating effect.
The temperature of the machine tool gradually rises after the machine tool is started for a certain period of time, the machine tool is heated without heating the cooling liquid, cooling oil exceeding the set value A is required to be cooled, and heat in the independent cavity 18 is required to be dissipated as soon as possible, so that the influence of the heat on cooling liquid is avoided. Thus, in some embodiments, both the top and bottom of the independent cavity 18 are provided with heat dissipation channels;
In some embodiments, in order to improve the heat dissipation efficiency, each heat dissipation channel is partially overlapped with the adjacent heat dissipation hole 10, and a movable plate for opening and closing is installed in each heat dissipation channel.
That is, when heating is required, the movable plate seals the corresponding heat dissipation channel, so that the independent cavity 18 is sealed, thereby facilitating the improvement of the heating efficiency of the heating device; after the heating is completed, the movable plate is opened to rapidly dissipate heat from the independent cavity 18, so that the influence on the cooling efficiency of the later-stage cooling liquid is avoided.
Based on the heating device, the control method for controlling the temperature of the machine tool cooling liquid by using the multi-stage heat exchange box provided by the embodiment further comprises the following steps in addition to the step A in the embodiment 1:
If the controller 12 determines that the monitored data of the first temperature sensor 14 at the current time is lower than the set value B (for example, the set value b=28°), step B is performed to make the monitored data of the second temperature sensor 17 be in the target range: wherein, step B includes:
Controlling the heating device to heat the whole B; after the heating is finished, the heating is stopped, and the movable plate is closed corresponding to the heat dissipation channel before the heating, and after the heating is finished, the movable plate is opened, so that the heat in the movable plate can be rapidly dissipated.
Through the setting, the machine tool lower than the set value B can be heated by the device, the machine tool can be quickly heated to a target range, meanwhile, the cooling effect of cooling liquid can be guaranteed by changing the heat dissipation efficiency, and then the machining precision of the machine tool can be effectively guaranteed.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
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Denomination of invention: A multi-stage heat exchange box and control method Granted publication date: 20241206 Pledgee: Agricultural Bank of China Limited Qingyang County Branch Pledgor: Anhui Jinshi Intelligent Machine Tool Technology Co.,Ltd. Registration number: Y2026980012295 |
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