Temperature adjusting device based on steady-state heat conduction distance control

Abstract

The utility model relates to a temperature adjusting device based on steady-state heat conduction distance control, and relates to the field of coffee bean baking machines, the temperature adjusting device comprises a steady-state heat source and a mounting seat, the steady-state heat source is fixedly mounted on the mounting seat, the mounting seat is arranged in a baking chamber in a lifting mode, and the steady-state heat source is located under a baking cylinder in the baking chamber; a lifting driving mechanism is mounted in the baking chamber, the driving end of the lifting driving mechanism is fixedly connected with the mounting base, and the lifting driving mechanism drives the steady-state heat source to move in the direction close to or away from the baking cylinder. The heating temperature is adjusted by adjusting the distance between the steady-state heat source and the heated object, the interference of the external environment air temperature influence on the coffee bean baking temperature can be reduced, and the temperature control precision can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of coffee bean roasting machines, and in particular to a temperature control device based on steady-state heat conduction distance control. Background Art

[0002] Caffeine has become one of the most popular beverages in human society because of its beneficial effects such as refreshing, anti-depression, promoting digestion and reducing the incidence of gallstones. People love coffee even more because of the additional flavor produced by roasting. Coffee is a beverage made by grinding and brewing coffee beans after roasting. In addition to considering the variety of coffee beans and the planting environment, strict consumers will even pay attention to the particle size of the ground powder, the brewing water temperature, the speed of the water flow, etc. Among them, the roasting time, temperature and heating method of coffee beans have the greatest impact on the flavor of coffee. At present, coffee industry or coffee lovers often rely on the experience of roasters to determine the roasting time, temperature and heating method of coffee beans.

[0003] In the prior art, the existing coffee bean roasting machine mainly includes a machine body, a roasting chamber and a roasting cylinder arranged in the roasting chamber for accommodating coffee beans, the inner wall of the roasting cylinder is provided with a through hole for flame to pass through, and a gas nozzle is arranged on the outer side of the roasting cylinder. When temperature adjustment is required, the roasting temperature of the roasted product (coffee beans) is mainly controlled by adjusting the size of the heat source or adjusting the circulation of cold air.

[0004] However, the gas flow rate is controlled by the size of the gas fire switch, and the gas must be mixed with air to burn to provide heat energy, but the gas flow rate is not only related to the size of the gas valve switch but also to the gas supply pressure, and high air humidity will directly affect the gas combustion efficiency; the temperature control is performed by using the inflow of room temperature cold air. When the external air temperature is not constant (such as spring, summer, autumn and winter), the same size of heat source will produce different baking temperatures, and there is room for improvement. Utility Model Content

[0005] In order to reduce the interference of the external ambient air temperature on the coffee bean roasting temperature and effectively improve the accuracy of temperature control, the present application provides a temperature control device based on steady-state heat conduction distance control.

[0006] The present application provides a temperature control device based on steady-state heat conduction distance control, which adopts the following technical solution:

[0007] A temperature control device based on steady-state heat conduction distance control, comprising a steady-state heat source and a mounting seat, wherein the steady-state heat source is fixedly mounted on the mounting seat, the mounting seat is lifted and arranged in a baking chamber, and the steady-state heat source is located directly below a baking cylinder in the baking chamber;

[0008] A lifting drive mechanism is installed in the baking chamber, a driving end of the lifting drive mechanism is fixedly connected to the mounting seat, and the lifting drive mechanism drives the steady-state heat source to move toward or away from the baking cylinder.

[0009] By adopting the above technical solution, the distance between the steady-state heat source and the coffee beans to be heated in the roasting cylinder can be adjusted by the lifting drive mechanism. Since the temperature of the steady-state heat source is constant, the technical effect of adjusting the roasting temperature can be achieved by adjusting the distance between the steady-state heat source and the roasting cylinder. When the roasting temperature of the coffee beans needs to be increased, the mounting seat and the steady-state heat source can be driven by the lifting drive mechanism to move toward the direction close to the roasting cylinder; when the roasting temperature of the coffee beans needs to be reduced, the mounting seat and the steady-state heat source can be driven by the lifting drive mechanism to move toward the direction away from the roasting cylinder.

[0010] Preferably, the lifting drive mechanism includes two servo motors, the cylinders of the two servo motors are fixedly mounted at the bottom of the baking chamber, the driving shaft ends of the two servo motors are mounted with screw rods, the two screw rods are respectively slidably mounted with slides, and the two sides of the mounting seat are respectively fixedly mounted on the slides.

[0011] By adopting the above technical solution, the servo motor drives the screw to rotate in different directions, which can drive the slide to slide in the upward or downward direction along the axial direction of the screw, thereby achieving the technical effect of adjusting the distance between the mounting seat, the steady-state heat source and the baking cylinder.

[0012] Preferably, two sides of the mounting seat are respectively integrally provided with extension plates, and the two extension plates are respectively fixedly connected to the two slides;

[0013] The two opposite inner side walls of the baking chamber are respectively provided with limiting grooves adapted to the extension plates, the two extension plates are respectively slidably arranged in the two limiting grooves, and limiting walls are respectively formed on the inner sides of the tops of the two limiting grooves.

[0014] By adopting the above technical solution, the two sides of the extension plate are restricted by the inner walls of the limiting grooves, which can limit the sliding track of the extension part and the mounting seat, reducing the shaking and offset of the mounting seat during the sliding process. The limiting wall of the limiting groove can limit the maximum rising position of the extension plate, reducing the situation where the mounting seat, the steady-state heat source and the baking cylinder are too close.

[0015] Preferably, two guide rods are fixedly installed in the baking chamber, and the mounting seat is provided with sliding holes for the two guide rods to pass through.

[0016] By adopting the above technical solution, the sliding track of the mounting seat can be restricted by the guide rod, thereby further reducing the occurrence of deviation of the mounting seat and the steady-state heat source.

[0017] Preferably, the guide rods are respectively sleeved with springs, and two ends of the springs are respectively fixedly connected to the bottom of the baking chamber and the bottom of the mounting seat.

[0018] By adopting the above technical solution, during the process of the mounting seat rising, the spring applies an upward elastic force to the mounting seat, which can accelerate the rising of the mounting seat; during the process of the mounting seat descending, the spring applies an upward elastic force to the mounting seat, which can slow down the descending speed of the mounting seat and improve the stability of the descent of the mounting seat.

[0019] In summary, the temperature control device based on steady-state heat conduction distance control of the present application includes at least one of the following beneficial technical effects:

[0020] 1. The distance between the steady-state heat source and the coffee beans to be heated in the roasting cylinder can be adjusted by using the servo motor, the screw rod, and the slide. Since the temperature of the steady-state heat source is constant, the distance between the steady-state heat source and the roasting cylinder can be adjusted to achieve the technical effect of adjusting the roasting temperature. When the roasting temperature of the coffee beans needs to be increased, the mounting seat and the steady-state heat source can be driven by the lifting drive mechanism to move toward the roasting cylinder; when the roasting temperature of the coffee beans needs to be lowered, the mounting seat and the steady-state heat source can be driven by the lifting drive mechanism to move away from the roasting cylinder;

[0021] 2. By using the extension plate, the limit slot and the guide rod together, the position deviation of the mounting seat during the lifting process can be effectively reduced, and the stability of the lifting action of the mounting seat can be effectively improved;

[0022] 3. During the rising process of the mounting seat, the spring applies an upward elastic force to the mounting seat, which can accelerate the rising of the mounting seat; during the descending process of the mounting seat, the spring applies an upward elastic force to the mounting seat, which can slow down the descending speed of the mounting seat and improve the stability of the descent of the mounting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram used to illustrate the overall structure of the temperature control device in the embodiment of the present application.

[0024] Explanation of the reference numerals: 1. Steady-state heat source; 2. Mounting seat; 21. Extension plate; 3. Baking chamber; 31. Limiting groove; 32. Limiting wall; 33. Guide rod; 34. Spring; 4. Baking cylinder; 5. Lifting drive mechanism; 51. Servo motor; 52. Screw rod; 53. Slide table. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1 This application is described in further detail.

[0026] Example

[0027] The present application embodiment discloses a temperature control device based on steady-state heat conduction distance control. Figure 1 , comprising a steady-state heat source 1 and a mounting base 2, wherein the steady-state heat source 1 is fixedly mounted on the mounting base 2, the mounting base 2 is lifted and arranged in a baking chamber 3, and the steady-state heat source 1 is located directly below a baking cylinder 4 in the baking chamber 3;

[0028] A lifting drive mechanism 5 is installed in the baking chamber 3 , and a driving end of the lifting drive mechanism 5 is fixedly connected to the mounting seat 2 . The lifting drive mechanism 5 drives the steady-state heat source 1 to move toward or away from the baking cylinder 4 .

[0029] According to the heat conduction formula: Q = K*A*(T1-T2) / L, Q is the conduction heat, K is the heat conduction coefficient, A is the cross-sectional area, T1 and T2 are the temperatures of the heat source and the heated object respectively, and L is the heat conduction distance. The greater the distance, the less the conduction heat. This structure adjusts the distance between the heated object and the steady-state heat source 1 to achieve the temperature rise rate of the heated object (coffee beans).

[0030] The distance between the steady-state heat source 1 and the coffee beans to be heated in the roasting cylinder 4 can be adjusted by the lifting drive mechanism 5. Since the temperature of the steady-state heat source 1 is constant and the heating area of ​​the steady-state heat source 1 is constant, the technical effect of adjusting the roasting temperature can be achieved by adjusting the distance between the steady-state heat source 1 and the roasting cylinder 4.

[0031] When the roasting temperature of the coffee beans needs to be increased, the mounting base 2 and the steady-state heat source 1 can be driven by the lifting drive mechanism 5 to move toward the direction close to the roasting cylinder 4; when the roasting temperature of the coffee beans needs to be lowered, the mounting base 2 and the steady-state heat source 1 can be driven by the lifting drive mechanism 5 to move toward the direction away from the roasting cylinder 4.

[0032] Reference Figure 1 The lifting drive mechanism 5 includes two servo motors 51, the cylinders of the two servo motors 51 are fixedly installed at the bottom of the baking chamber 3, the driving shaft ends of the two servo motors 51 are installed with screw rods 52, and slides 53 are slidably installed on the two screw rods 52, and the two sides of the mounting base 2 are fixedly installed on the slides 53.

[0033] The servo motor 51 drives the screw rod 52 to rotate in different directions, and can drive the slide 53 to slide along the axial direction of the screw rod 52 in an upward or downward direction, thereby achieving the technical effect of adjusting the distance between the mounting seat 2, the steady-state heat source 1 and the baking cylinder 4.

[0034] Reference Figure 1Extension plates 21 are integrally formed on both sides of the mounting seat 2, and the two extension plates 21 are fixedly connected to the two slides 53 respectively; limiting grooves 31 adapted to the extension plates 21 are respectively opened on the two opposite inner walls of the baking chamber 3, and the two extension plates 21 are respectively slidably set in the two limiting grooves 31, and limiting walls 32 are respectively formed on the inner sides of the tops of the two limiting grooves 31.

[0035] The two sides of the extension plate 21 are limited by the inner walls of the limiting groove 31, which can limit the sliding track of the extension part and the mounting seat 2, and reduce the shaking and deviation of the mounting seat 2 during the sliding process. The limiting wall 32 of the limiting groove 31 can limit the maximum rising position of the extension plate 21, and reduce the situation where the mounting seat 2, the steady-state heat source 1 and the baking cylinder 4 are too close.

[0036] In the embodiment of the present application, two guide rods 33 are fixedly installed in the baking chamber 3, and the mounting seat 2 is provided with sliding holes for the two guide rods 33 to pass through.

[0037] The guide rod 33 can limit the sliding track of the mounting seat 2, further reducing the occurrence of deviation of the mounting seat 2 and the steady-state heat source 1.

[0038] Reference Figure 1 The guide rods 33 are respectively sleeved with springs 34 , and both ends of the springs 34 are respectively fixedly connected to the bottom of the baking chamber 3 and the bottom of the mounting seat 2 .

[0039] During the rising process of the mounting seat 2, the spring 34 applies an upward elastic force to the mounting seat 2, which can accelerate the rising of the mounting seat 2; during the falling process of the mounting seat 2, the spring 34 applies an upward elastic force to the mounting seat 2, which can slow down the falling speed of the mounting seat 2 and improve the stability of the falling of the mounting seat 2.

[0040] It should be noted that in some other embodiments, according to actual needs, the structure of the motor screw 52 can be replaced with a structure of a motor, a gear, and a rack to achieve the lifting and lowering drive effect of the mounting base 2, which is not limited here.

[0041] The implementation principle of the temperature control device based on steady-state heat conduction distance control in the embodiment of the present application is as follows: the distance between the steady-state heat source 1 and the coffee beans to be heated in the roasting cylinder 4 can be adjusted by using the servo motor 51, the screw rod 52, and the slide 53. Since the temperature of the steady-state heat source 1 is constant, the technical effect of adjusting the roasting temperature can be achieved by adjusting the distance between the steady-state heat source 1 and the roasting cylinder 4. When the roasting temperature of the coffee beans needs to be increased, the mounting seat 2 and the steady-state heat source 1 can be driven by the lifting drive mechanism 5 to move toward the direction close to the roasting cylinder 4; when the roasting temperature of the coffee beans needs to be reduced, the mounting seat 2 and the steady-state heat source 1 can be driven by the lifting drive mechanism 5 to move away from the roasting cylinder 4.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A temperature control device based on steady-state heat conduction distance control, characterized in that: The invention comprises a steady-state heat source (1) and a mounting seat (2), wherein the steady-state heat source (1) is fixedly mounted on the mounting seat (2), the mounting seat (2) is arranged in a lifting manner in a baking chamber (3), and the steady-state heat source (1) is located directly below a baking cylinder (4) in the baking chamber (3); A lifting drive mechanism (5) is installed in the baking chamber (3), a driving end of the lifting drive mechanism (5) is fixedly connected to the mounting seat (2), and the lifting drive mechanism (5) drives the steady-state heat source (1) to move in a direction close to or away from the baking cylinder (4).

2. A temperature control device based on steady-state heat conduction distance control according to claim 1, characterized in that: The lifting drive mechanism (5) comprises two servo motors (51), the cylinder bodies of the two servo motors (51) are fixedly mounted on the bottom of the baking chamber (3), the driving shaft ends of the two servo motors (51) are mounted with screw rods (52), the two screw rods (52) are respectively slidably mounted with slides (53), and the two sides of the mounting seat (2) are respectively fixedly mounted on the slides (53).

3. A temperature control device based on steady-state heat conduction distance control according to claim 2, characterized in that: Extension plates (21) are integrally formed on both sides of the mounting seat (2), and the two extension plates (21) are fixedly connected to the two slide platforms (53) respectively; The two opposite inner side walls of the baking chamber (3) are respectively provided with limiting grooves (31) adapted to the extension plates (21); the two extension plates (21) are respectively slidably arranged in the two limiting grooves (31); and limiting walls (32) are respectively formed on the inner sides of the tops of the two limiting grooves (31).

4. A temperature control device based on steady-state heat conduction distance control according to claim 3, characterized in that: Two guide rods (33) are fixedly installed in the baking chamber (3), and the mounting seat (2) is provided with sliding holes for the two guide rods (33) to pass through.

5. A temperature control device based on steady-state heat conduction distance control according to claim 4, characterized in that: The guide rods (33) are respectively sleeved with springs (34), and the two ends of the springs (34) are respectively fixedly connected to the bottom of the baking chamber (3) and the bottom of the mounting seat (2).

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