CN113467548A

CN113467548A - Temperature control device and temperature control method

Info

Publication number: CN113467548A
Application number: CN202010417119.4A
Authority: CN
Inventors: 陈安顺
Original assignee: Group Up Industrial Co ltd
Current assignee: Group Up Industrial Co ltd
Priority date: 2020-03-30
Filing date: 2020-05-18
Publication date: 2021-10-01
Also published as: TW202137861A

Abstract

A temperature control device and a temperature control method are provided, wherein the temperature control device comprises a heating element, an air supply plate and a plurality of adjusting plates. The air supply plate is arranged on the heating element and penetrates through the air supply plate to form a plurality of air supply holes. The adjusting plate is movably arranged on the air supply plate, the adjusting plate can shield the partial area of the air supply holes, the air output of each air supply hole can be adjusted when air flow passes through, the air output of the air supply holes is close to the central area, the air output of the air supply holes is approximately equal to that of the peripheral area, and the heating effect is uniform.

Description

Temperature control device and temperature control method

Technical Field

The present invention relates to a temperature control device, and more particularly, to a temperature control device and a temperature control method capable of uniformly heating and cooling.

Background

The existing temperature control device for the oven comprises a heating element and an air supply plate, wherein the air supply plate is provided with a plurality of air supply holes. The air supply device in the oven can blow air flow to the temperature control device, and the heating element can heat the air flow passing through the heating element and flow into an inner space of the oven through the air supply plate, so that the inner space is heated. However, in the conventional temperature control device, since the temperature of the air flowing into the inner space through the central region of the air supply plate is slightly higher than the temperature of the air flowing into the inner space through the peripheral region, the heating effect to the inside of the oven may be uneven, and there is still room for improvement.

Disclosure of Invention

One of the objectives of the present invention is to provide a temperature control device capable of uniformly increasing and decreasing temperature.

Another objective of the present invention is to provide a temperature control method capable of uniformly increasing and decreasing temperature.

The temperature control device comprises a heating element; the air supply plate is arranged on the heating element and penetrates through the heating element to form a plurality of air supply holes; and the adjusting plates are movably arranged on the air supply plate, and can shield partial area of the air supply hole.

The temperature control device also comprises a filtering piece arranged on one side of the heating piece far away from the air supply plate.

The temperature control device also comprises a cooling part which is arranged on the filter part opposite to the heating part.

The heating element of the temperature control device comprises a fixed seat for the air supply plate and a plurality of electric heating tubes which are arranged in the fixed seat at intervals.

The temperature control method comprises the following steps: measuring the temperature of a plurality of layered regions of the air supply plate by a plurality of temperature sensing pieces to generate a plurality of temperature signals; after receiving the temperature signal, the controller calculates a difference value of the temperature signal; the controller transmits an adjusting signal to a plurality of electric heating tubes of the heating element in at least one corresponding delamination area so as to adjust the power of the electric heating tubes in the at least one delamination area; and repeating the steps until the difference value of the temperature signals is smaller than a default value.

The invention has the beneficial effects that: through the adjusting plate can reciprocate for this air supply board in order to shelter from the partial area of supply-air hole can adjust the air output of each supply-air hole when the air current passes through, makes to be close to central zone the air output of air-out hole roughly equals to be close to peripheral zone the air output of air-out hole lets the heating effect comparatively even.

Drawings

FIG. 1 is a perspective view of one embodiment of the oven of the present invention;

FIG. 2 is a perspective view of another perspective of the embodiment;

FIG. 3 is a perspective view of a carrier and a plurality of substrates;

FIG. 4 is a partial side view taken along section line IV-IV of FIG. 1, with a cabinet of an outer wall unit of a cabinet omitted, illustrating a lift table of a lift mechanism in a lowered position;

FIG. 5 is a fragmentary, enlarged partial view of FIG. 4;

FIG. 6 is a fragmentary, enlarged partial view of FIG. 4;

FIG. 7 is a partial side view taken from section line VII-VII of FIG. 1 with the cabinet omitted;

FIG. 8 is a fragmentary, enlarged partial view of FIG. 7;

FIG. 9 is a fragmentary, enlarged partial view of FIG. 7;

FIG. 10 is a perspective view of the embodiment illustrating an access valve of the outer wall unit in an open state;

FIG. 11 is a partial side view similar to FIG. 4 illustrating the lift platform in a raised position;

FIG. 12 is a block diagram of a temperature control module of the embodiment;

FIG. 13 is a perspective view of a temperature control device of the temperature control module of the embodiment;

FIG. 14 is an exploded perspective view of the temperature control device;

FIG. 15 is a plan view illustrating the relationship of a plurality of adjustment plates to a blower plate; and

FIG. 16 is a plan view illustrating the adjustment plate being movable in different directions relative to the blower plate; and

FIG. 17 is a flow chart of an embodiment of a temperature control method of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 1 to 3, an embodiment of the oven 100 of the present invention is suitable for baking a plurality of substrates 1, wherein the substrates 1 are placed on a carrier 2, and when baking is performed, the carrier 2 is placed in the oven 100, and then the substrates 1 are fed into the oven 100 one by one. The oven 100 includes a box 3, a lifting mechanism 4 (see fig. 4), a temperature control module 5 (see fig. 4), a hydraulic pump 6, and a measuring machine 7.

Referring to fig. 4 to 7, the case 3 includes an inner wall unit 31 and an outer wall unit 32. The inner wall unit 31 is disposed in the outer wall unit 32 and has an inner top wall 311 extending along a left-right direction D1, two first inner side walls 312 respectively connected to the inner top wall 311 and extending along a vertical direction D3 and spaced from each other, two second inner side walls 313 respectively connected to the inner top wall 311 and the first inner side walls 312 and extending along a vertical direction D3 and arranged along a front-back direction D2, an inner bottom wall 314 connected to the first inner side walls 312 and the second inner side walls lower edge 313 and extending along a left-right direction D1, a flange 315 inwardly protruding from the first inner side walls 312 and the second inner side walls 313 and formed in a square frame shape, two upper outer side walls 316 respectively connected to the first inner side walls 312 and formed in an L shape, an outer top wall 317 having two ends respectively connected to the upper outer side walls 316 and spaced from the inner top wall 311, two lower outer side walls 318 respectively connected to the first inner side walls 312 and formed in an L shape and two ends respectively connected to the lower outer side walls 318 and connected to the inner bottom wall 314 Spaced-apart outsole walls 319. The inner top wall 311, the first inner sidewall 312, the second inner sidewall 313 and the flange 315 define a heating chamber C1, and the inner bottom wall 314, the first inner sidewall 312, the second inner sidewall 313 and the flange 315 define a cooling chamber C2. Wherein a second inner side wall 313 has an inner opening 313a (see fig. 7) communicating with the cooling chamber C2. The upper outer sidewall 316 and the lower outer sidewall 318 are spaced apart from each other. In the embodiment, the second inner sidewall 313 is divided into two portions corresponding to the heating chamber C1 and the cooling chamber C2, but not limited thereto, and may be a single integral wall in other embodiments.

Referring to fig. 1, 2, 8 and 9, the outer wall unit 32 includes a bottom wall 321, a top wall 322 spaced apart from the bottom wall 321, two first side walls 323 extending along a vertical direction D3 and respectively connecting the bottom wall 321 and the top wall 322 and spaced apart from each other in a horizontal direction D1, two second side walls 324 extending along a vertical direction D3 and respectively connecting the bottom wall 321, the top wall 322 and the first side walls 323 and spaced apart from each other in a front-rear direction D2, an access valve 325 movably disposed on one of the second side walls 324, two maintenance doors 326 disposed on the other second side wall 324, a cabinet 327 disposed on one of the first side walls 323, and two sensing elements 328 disposed on the maintenance doors 326. The second sidewall 324, on which the inlet/outlet valve 325 is disposed, has an inlet/outlet 324a corresponding in position to the inner opening 313a and communicating with the inner opening 313 a. The in-out valve 325 can movably close the entrance 324a along the up-down direction D3, and includes a pair of slide rails 325a disposed on two sides of the entrance 324a and extending along the up-down direction D3, a connecting arm 325b movably disposed on the slide rails 325a, and a door 325c fixedly connected to the connecting arm 325b and capable of closing the entrance 324a, wherein the in-out valve 325 can move downward to open the entrance 324a, and at this time, the substrate 1 can be transferred into the oven 100 or the substrate 1 can be taken out from the oven 100, as shown in fig. 10. The maintenance door 326 is positioned to correspond to the heating chamber C1 and the cooling chamber C2, respectively, and the maintenance door 326 can be opened to facilitate maintenance work when the oven 100 needs maintenance. The cabinet 327 is a distribution box of the oven 100, and is provided with circuit lines (not shown) and control units (not shown) for controlling the overall operation of the oven 100. The sensing device 328 is used in conjunction with the measuring machine 7 located above the hydraulic pump 6 to detect the oxygen concentration in the heating chamber C1 and the cooling chamber C2. since the oven 100 of the present invention is baked at a high temperature of about 300 ℃, if the oxygen concentration in the heating chamber C1 and the cooling chamber C2 is too high, the substrate 1 is easily oxidized during the baking process, and the substrate 1 is damaged.

Referring to fig. 6, 9 and 11, the lifting mechanism 4 includes a lifting platform 41 capable of moving up and down and a pushing member 42 for driving the lifting platform 41. The lifting platform 41 has a top wall 411, a bottom wall 412 spaced apart from the top wall 411, and a plurality of support posts 413 connecting the top wall 411 and the bottom wall 412, respectively, the lifting platform 41 being movable between a lowered position in which the top wall 411 abuts against the upper surface of the flange 315 and a raised position in which the heating chamber C1 and the cooling chamber C2 are spaced apart from the top wall 411, as shown in fig. 6. In the raised position, the bottom wall 412 abuts the lower surface of the flange 315, and the heating chamber C1 and the cooling chamber C2 are spaced apart by the bottom wall 412, as shown in fig. 11. The pushing member 42 can be, for example, but not limited to, a hydraulic cylinder, and the pushing member 42 can push the lifting table 41 to move between a lowered position and a raised position.

Referring to fig. 4 to 6 and 12, the temperature control module 5 is disposed on the inner wall unit 31 for controlling the temperatures of the heating chamber C1 and the cooling chamber C2. The temperature control module 5 includes two temperature control devices 51 respectively disposed between the first inner sidewall 312 and the upper outer sidewall 316, two upper air supply devices 52 respectively communicated with the temperature control devices 51, two temperature reduction devices 53 respectively disposed between the first inner sidewall 312 and the lower outer sidewall 318, two lower air supply devices 54 respectively communicated with the temperature reduction devices 53, a pair of upper temperature sensing members 55, a pair of lower temperature sensing members 56, a plurality of heating members 57 disposed between the inner top wall 311 and the outer top wall 317, and a controller 58 electrically connected to the temperature control devices 51.

Referring to fig. 13 to 16, each of the temperature control devices 51 has an air blowing plate 511 penetrating through the corresponding first inner sidewall 312, a plurality of adjusting plates 512 capable of movably disposing the air blowing plate 511 up and down, a heating element 513 disposed on the corresponding first sidewall 323 adjacent to the air blowing plate 511, an upper filtering element 514 disposed on a side of the heating element 513 away from the first sidewall 323, and an upper cooling element 515 disposed on a side of the upper filtering element 514 away from the first sidewall 323. The blowing plate 511 has a plurality of blowing holes 511A formed therethrough, and has three layered regions, which are an upper region 511A, a middle region 511B, and a lower region 511C, respectively. Each adjusting plate 512 penetrates through a plurality of adjusting holes 512a, and three adjusting plates 512 are correspondingly arranged in each layered area. The heating element 513 includes a fixing seat 513a disposed on the first sidewall 323 and a plurality of electric heating tubes 513b, and is operable to heat an air flow passing through the heating element 513, the upper filtering element 514 includes a square frame and a plurality of filtering screens (not shown) disposed therein, the upper cooling element 515 may be, for example, a cooling coil having a plurality of fins, and is operable to cool an air flow passing through the upper cooling element 515, the upper cooling element 515 is communicated with a plurality of cooling water pipelines (not shown), and a power source of the cooling water pipelines is the hydraulic pump 6. The adjusting plate 512 can cover a part of the area of the air blowing holes 511a, and the adjusting plate 512 can move up and down relative to the air blowing plate 511, thereby adjusting the air output of each air blowing hole 511a, as shown in fig. 15. In the case shown in fig. 14, the adjusting holes 512a and the blowing holes 511a are all in a superposed state, that is, each blowing hole 511a is not blocked, but in practice, the amount of airflow blown out through the blowing hole 511a located at the central height is slightly higher than the amount of airflow blown out through the blowing holes 511a located at the upper height and the lower height, so that the user moves the adjusting plate 512 located at the central height to block a part of the area of the blowing hole 511a located at the central height, so as to reduce the air output. In the present embodiment, the layered regions are three regions, i.e., an upper layer region 511A, a middle layer region 511B and a lower layer region 511C, but the present invention is not limited thereto.

Referring to fig. 4, 5 and 8, the upper air blowing device 52 is used for blowing the air flow to the heating chamber C1 through the temperature control device 51, each of the upper air blowing devices 52 includes a wind wheel 521 disposed between the inner top wall 311, the upper outer sidewall 316 and the outer top wall 317 and a motor 522 for driving the wind wheel 521 to rotate, and the wind wheel 521 has a housing communicated with the temperature control device 51 and blades located inside the housing. Each of the upper temperature sensors 55 is disposed adjacent to the air blowing plate 511 and located in the heating chamber C1, and has three vertically spaced branch portions 551 for sensing the temperatures of the air flow blown out by the air blowing plate 511 at three relative height positions of the upper layer, the middle layer and the lower layer to determine whether the temperature rise curves of the temperature change with time are consistent in the heating process, and if the temperature rise curves are inconsistent, a temperature control method is performed to make the temperature rise curves approach to consistency. The heating member 57 can be, for example, a U-shaped electric heating tube 513b, which is used to heat the space between the inner top wall 311 and the outer top wall 317 during the baking process, so that the temperature of the air blown from the upper air blowing device 52 to the temperature control device 51 is increased, and the time consumed by heating can be shortened.

Referring to FIG. 17, the temperature control method described above is described as follows, which includes steps S1-S4.

Step S1: first, the temperature sensors 55 measure the temperatures of the upper, middle and

lower regions

511A, 511B and 511C of the blower plate 511, respectively, to generate three temperature signals.

Step S2: after receiving the temperature signal, the controller 58 calculates a difference value of the temperature signal, so as to know which of the upper layer 511A, the middle layer 511B and the lower layer 511C has a higher or lower temperature.

Step S3: the controller 58 transmits an adjustment signal to a plurality of corresponding at least one delamination zone of the electrothermal tubes 513b of the heating element 513 to adjust the power of the electrothermal tubes 513b in the at least one delamination zone. For example, if the temperature signal corresponding to upper zone 511A is lower than the other two, the adjustment signal is transmitted to the thermal heating tube 513b corresponding to upper zone 511A to increase the power of the thermal heating tube 513 b. For example, if the temperature signal corresponding to the middle zone 511B is higher than the other two, the adjustment signal is transmitted to the electrothermal tube 513B corresponding to the middle zone 511B, so as to reduce the power of the electrothermal tube 513B. It should be noted that the adjusting signal can also be transmitted to the electrothermal tube 513b corresponding to the upper layer 511A and the lower layer 511C, so as to increase the power of the electrothermal tube 513b, and also reduce the difference value of the temperature signals.

In step S4, it is determined that the difference between the temperature signals is smaller than a default value, which may be, for example, 1 ℃, but not limited thereto, and the default value can be adjusted according to the user' S requirement. If the difference value of the temperature signals is greater than 1 ℃, returning to the step S1 to repeat the steps until the difference value of the temperature signals is less than 1 ℃, thus completing the steps of the temperature control method. The temperature control method can make the temperatures of the upper layer area 511A, the middle layer area 511B and the lower layer area 511C consistent, so that the temperature rise curves of the heating chamber C1 are consistent, and the heating effect is more uniform.

Referring to fig. 4, 6 and 9, each of the cooling devices 53 has an air guiding plate 531 penetrating through the corresponding first inner sidewall 312, a lower filtering member 532 disposed at an interval on a side of the air guiding plate 531 away from the first sidewall 323, and a lower cooling member 533 disposed on a side of the lower filtering member 532 away from the first sidewall 323. The air guiding plate 531 has a plurality of horizontally extending elongated air outlets 531a and a plurality of pairs of funnel-shaped guide bars 531b extending upward and downward from the upper and lower sides of the air outlets 531a, respectively, and the height position of the air outlets 531a is substantially the same as that of the substrate 1, so that the cooling air blown out through the air outlets 531a can be directly blown toward the substrate 1 for cooling. The lower filter 532 and the lower cooling element 533 are identical to the upper filter 514 and the upper cooling element 515, and thus are not described in detail. The lower air blowing devices 54 are used for blowing the air flow into the cooling chamber C2 through the cooling device 53, each lower air blowing device 54 includes a wind wheel 541 disposed between the inner bottom wall 314, the lower outer sidewall 318 and the outer bottom wall 319, and a motor 542 driving the wind wheel 541 to rotate, and the wind wheel 541 has a casing communicating with the cooling device 53 and fan blades located inside the casing. Each of the lower temperature sensing members 56 and each of the upper temperature sensing members 55 are the same element, and are disposed adjacent to the air guiding plate 531 and located in the heating chamber C1, and have three vertically spaced branch portions 561 for sensing the temperatures of the air flow blown out by the air guiding plate 531 at three relative height positions of the upper layer, the middle layer and the lower layer, so as to determine whether the cooling curves of the temperatures varying with time in the cooling process are consistent.

The operation flow of the oven 100 of the present invention is as follows: referring to fig. 7 and 11, the in-out valve 325 is moved downward to open the access port 324a, the substrates 1 are fed into the carrier 2 in the cooling chamber C2 one by one through the access port 324a and the inner opening 313a by, for example, a material taking mechanism (not shown), after the substrates 1 are all conveyed to the carrier 2, the in-out valve 325 is moved upward to close the access port 324a, and then the lower blowing device 54 externally connected with a nitrogen pipeline (not shown) injects nitrogen into the cooling chamber C2, because the baking temperature of the oven 100 of the present invention is at a high temperature of about 300 ℃, if the oxygen content is too high, the substrates 1 are easily oxidized and damaged during the baking process, and thus the oxygen content is reduced by injecting nitrogen. When the oxygen content in the cooling chamber C2 is lower than the standard value, the pushing member 42 of the lifting mechanism 4 drives the lifting table 41 to move upward from the lowered position to the raised position, so that the substrate 1 enters the heating chamber C1 for baking. Referring to fig. 5, before the substrate 1 enters the heating chamber C1, the heating chamber C1 is pre-heated to about 100 ℃ and filled with nitrogen gas through the upper blowing device 52 connected to an external nitrogen pipeline (not shown) to make the oxygen content lower than a standard value, so that heating from room temperature is not required during baking, heating time is saved, heating efficiency is improved, the upper blowing device 52 blows air to the temperature control device 51, the heating element 513 starts to operate to heat the passing air, and the air enters the heating chamber C1 through the blowing holes 511a of the blowing plate 511 to heat the heating chamber C1 and the substrate 1 to 300 ℃. After baking, the heating element 513 stops, the upper cooling element 515 starts to operate to cool the heating chamber C1 and the substrate 1 to 100 ℃, after cooling, the pushing element 42 of the lifting mechanism 4 drives the lifting table 41 to move downward from the raised position to the lowered position, then the lower air blowing device 54 injects cold air at normal temperature into the cooling chamber C2 to cool the substrate 1, after the substrate 1 is cooled to normal temperature, the in-out valve 325 moves downward to open the access 324a, the substrate 1 is cooled from the carrier 2 in the chamber C2 one by, for example, the material taking mechanism (not shown) through the access 324a and the inner opening 313a, and thus the baking process of the oven 100 of the present invention is completed. It should be noted that, since the heating chamber C1 and the cooling chamber C2 are separated by the top plate or the bottom plate of the elevating platform 41 no matter the elevating platform 41 is at the descending position or the ascending position, the baking heating and cooling operations can be performed in the heating chamber C1 and the cooling chamber C2 respectively without mutual influence, and the nitrogen gas injection operation is also performed, so that the time required for each step can be saved, and the overall working efficiency can be effectively improved.

As described above, by the lifting/lowering mechanism 4, the heating chamber C1 and the cooling chamber C2 are separated by the top wall 411 or the bottom wall 412 of the lifting/lowering mechanism 41 no matter the lifting/lowering mechanism 41 is at the lowered position or the raised position, the flow of baking the substrate 1 can be completed in the heating chamber C1, and the substrate 1 is transferred to the cooling chamber C2 through the lifting/lowering mechanism 41 after baking is completed, so that only the heating chamber C1 needs to be heated, and the completed cooling process is completed in the cooling chamber C2, and the heating chamber C1 does not need to be cooled, so that the heating chamber C1 can be maintained at a high temperature, the time consumed by the next heating and temperature rise is reduced, the time consumed by cooling and temperature reduction is reduced because only the cooling chamber C2 needs to be cooled, and the overall efficiency can be effectively improved, thereby achieving the object of the present invention.

It should be understood that the above description is only exemplary of the present invention, and that the scope of the present invention should not be limited thereby, and that the invention is intended to cover all modifications and equivalents of the claims and their equivalents.

Claims

1. A temperature control device, comprising:

a heating member;

the air supply plate is arranged on the heating element and penetrates through the heating element to form a plurality of air supply holes; and

and the adjusting plates are movably arranged on the air supply plate and can shield partial area of the air supply hole.

2. The temperature control device of claim 1, wherein: still include to set up in this heating member and keep away from the filtration piece of one side of this air supply board.

3. The temperature control device of claim 2, wherein: also includes a cooling member disposed opposite the heating member from the filter member.

4. The temperature control device of claim 1, wherein: the heating element comprises a fixed seat for the air supply plate and a plurality of electric heating tubes which are arranged in the fixed seat at intervals.

5. A method of temperature control comprising the steps of:

measuring the temperature of a plurality of layered regions of the air supply plate by a plurality of temperature sensing pieces to generate a plurality of temperature signals;

after receiving the temperature signal, the controller calculates a difference value of the temperature signal;

the controller transmits an adjusting signal to a plurality of electric heating tubes of the heating element in at least one corresponding delamination area so as to adjust the power of the electric heating tubes in the at least one delamination area; and

and repeating the steps until the difference value of the temperature signals is smaller than a default value.