Coffee bean baking machine

Abstract

The coffee bean baking machine comprises a main body, a baking chamber is arranged in the main body, a material turning barrel and a heating device are arranged in the baking chamber, the material turning barrel is horizontally arranged, an inlet and an outlet are formed in one end of the material turning barrel, the other end of the material turning barrel is in power connection with a driving mechanism, and a material screening groove / hole smaller than coffee beans in size is formed in the barrel wall of the material turning barrel. A spirally arranged material turning paddle is arranged on the inner cylinder wall of the material turning cylinder; the main body is further provided with a feed port and a discharge port which are connected with the baking chamber and correspond to the inlet and outlet, and the discharge port is located below the feed port and corresponds to the 6 o'clock position of the end face of the inlet and outlet; the baking chamber is further provided with an exhaust passage and a material receiving groove located below the material turning barrel. The coffee bean baking machine has the advantages that the coffee bean baking machine is small in size, convenient to carry, high in baking stability and efficiency, free of weighing coffee beans, capable of automatically and gently heating the coffee beans to a set temperature within a set time according to the weight of the fed coffee beans after conditions are set, full-automatic in control and small in heat loss.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of baking equipment, concretely relates to a coffee bean roaster. BACKGROUND

[0002] Coffee beans are made from green beans, and generally the greater the roasting intensity, the weaker the sour taste and the stronger the bitter taste, so the roasting process is an important part of determining the taste of coffee; Coffee bean roasters are generally divided into commercial and household types, and the commercial coffee bean roaster has a relatively mature process system and a large roasting capacity, and the quality output is relatively stable; For household coffee bean roasters, the roasting capacity is small and the weight is not the same, and it is more difficult to control the temperature, and there are problems of large heat loss and low roasting efficiency, and the gas emission is unstable (if the exhaust is too fast, the temperature will drop sharply, and if the exhaust is too slow, it will affect the coffee flavor; For beginners, it will waste a lot of time and increase the trial and error cost; Therefore, the smaller the coffee bean roaster, the more difficult it is to control the roasting intensity, especially for users who pursue outdoor life and mobility. SUMMARY

[0003] Based on the above problems, the utility model aims at providing a coffee bean roaster which is small in size, convenient to carry, stable in roasting, high in efficiency and small in heat loss.

[0004] In view of the above problems, the following technical scheme is provided: a coffee bean roaster, comprising a main body, a roasting chamber is arranged in the main body, a stirring cylinder and a heating device are arranged in the roasting chamber, the stirring cylinder is arranged in a horizontal manner, one end of the stirring cylinder is provided with an inlet and outlet, and the other end of the stirring cylinder is connected with a driving mechanism, a sieve groove / hole smaller than the size of coffee beans is arranged on the stirring cylinder wall, and a stirring paddle arranged in a spiral manner is arranged on the inner wall of the stirring cylinder; The main body is further provided with a feeding port and a discharging port corresponding to the inlet and outlet and connected with the roasting chamber, the discharging port is located below the feeding port and corresponds to the 6 o'clock position of the end face of the inlet and outlet; The roasting chamber is further provided with an exhaust passage and a receiving groove located below the stirring cylinder.

[0005] The utility model is further provided, the stirring cylinder wall is composed of a plurality of grid rods arranged along the circumferential direction and spaced apart, and the sieve groove / hole is formed between adjacent grid rod groups; The gap between adjacent grid rods is smaller than the minimum thickness size of coffee beans.

[0006] The utility model is further provided, the main body is provided with a feeding hopper, a feeding valve is arranged between the feeding hopper and the feeding port; The discharging port is provided with a discharging valve, and further comprises a detection switch for detecting the opening of the discharging valve and controlling the heating device to stop heating and the discharge of coffee beans.

[0007] The utility model is further provided, the discharging valve is provided with an observation window.

[0008] The utility model further sets up, the discharge port outside is equipped with the discharge hopper.

[0009] The utility model further sets up, the exhaust passage outer wall is equipped with the length of the air induction pipe of exhaust passage length greater than the interval of the concentricity of exhaust passage and air induction pipe forms air induction interlayer, the air induction pipe wall of the concentricity interval of exhaust passage is equipped with the air induction port of air induction interlayer link, the air induction port is installed with the air induction fan that has connected, the air induction fan introduces the air into air induction interlayer and discharges to the extension end of air induction pipe and exhaust passage and makes the extension end of exhaust passage form negative pressure and the gas in the baking chamber is induced, exhaust passage, air induction pipe end part is worn out the main part, the air induction fan is located in the equipment cabin of main part.

[0010] The utility model further sets up, the extension end of exhaust passage is equipped with the expansion head of exhaust passage diameter greater than the diameter, the expansion head reduces the flow cross section of this part air induction interlayer to increase the flow velocity, improves the gas induction efficiency.

[0011] The utility model further sets up, the baking chamber bottom is equipped with the pull -out opening, the material receiving groove is pulled -out cooperation and realizes installation or draws out.

[0012] The utility model further sets up, still include sampling shovel, the sampling shovel is equipped with sampling groove, the main part still is equipped with sampling port, the sampling shovel is with sampling port shows detachable's plug -in cooperation and makes sampling shovel insert sampling port when sampling groove enters import and export.

[0013] The utility model further sets up, still include with the PID temperature control module of heating device electricity is connected, and with PID temperature control module link is used for detecting the temperature measuring head of baking chamber temperature.

[0014] The utility model further sets up, heating device preferably adopts electric heating pipe heating, drive mechanism is motor cooperation reduction gearbox drive, the side of the material turning paddle towards the material turning barrel center is equipped with in the material turning paddle length direction and centrally arranged vice paddle, the spiral direction of vice paddle is opposite with the spiral direction of material turning paddle.

[0015] The utility model has the advantages of:

[0016] 1, the material turning paddle of spiral arrangement can guide coffee beans to move towards the import and export direction (discharge state) or away from the import and export direction (baking state) when turning coffee beans during baking through the forward and reverse rotation of the material turning barrel;

[0017] 2, the material screen groove / hole can screen out the bean skin generated during the baking process and fall into the material receiving groove below the material turning barrel for collection, while retaining coffee beans in the material turning barrel, avoiding the mixing of bean skin and coffee beans to affect the uniformity of coffee beans and the baking efficiency;

[0018] 3、The grid rod structure can improve the screening efficiency of the bean skin;

[0019] 4、The observation window is preferably quartz / glass, which has good heat resistance and facilitates observation of the internal baking condition;

[0020] 5、The air entraining fan establishes positive pressure for the air entraining layer, thereby flowing to the extending end of the air entraining pipe and forming a negative pressure area at the extending end of the exhaust passage, so as to realize the purpose of leading out the gas in the baking chamber. This leading-out mode ensures that the air entraining fan will not contact the high-temperature gas, and meanwhile ensures the stability of the gas leading-out, avoiding the sudden change of the temperature in the baking chamber; the Venturi principle is utilized to ensure the smoothness of the air entraining;

[0021] 6、During normal baking, the sampling shovel is inserted into the sampling port, and the sampling groove is rotated to the downward position; when sampling is needed, the sampling shovel is rotated to make the sampling groove face upward, so as to realize sampling and draw out the sample from the sampling port;

[0022] 7、Through the PID temperature control module, the PID (proportion-integration-differentiation) control is utilized to execute the programming control, so as to ensure the stability of the baking;

[0023] 8、The setting of the auxiliary paddle can ensure that the coffee beans are not too concentrated on the bottom of the side of the turning barrel far away from the inlet and outlet during baking, and the coffee beans higher than the position of the turning paddle are moved reversely to the side of the inlet and outlet, so as to avoid the coffee beans reaching the position of the inlet and outlet and improve the heating effect;

[0024] 9、During the baking process, the bean skin is collected in the receiving groove at the bottom of the turning barrel, so as to effectively avoid heat loss and meanwhile avoid the over-heating of the bean skin affecting the flavor;

[0025] 10、The device has small volume and is convenient to carry;

[0026] 11、The device does not need to weigh the coffee beans, and after the conditions are set, the device can automatically and gently heat to the set temperature within the set time according to the weight of the input coffee beans, and the device is fully automatically controlled. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a storage state three-dimensional structure schematic view of the utility model.

[0028] Figure 2 It is an unfolded state three-dimensional structure schematic view of the utility model.

[0029] Figure 3 It is a feeding valve opening and discharging valve closing state three-dimensional structure schematic view of the utility model.

[0030] Figure 4 It is a feeding valve closing, discharging valve opening and receiving groove drawing-out state three-dimensional structure schematic view of the utility model.

[0031] Figure 5 This is a schematic diagram of the three-dimensional structure of this utility model.

[0032] Figure 6 This is a full-section three-dimensional structural diagram of the present invention.

[0033] Figure 7 This utility model Figure 3 A schematic diagram of the half-section three-dimensional structure.

[0034] Figure 8 This utility model Figure 4 A schematic diagram of the half-section three-dimensional structure.

[0035] Figure 9 This utility model Figure 6 A schematic diagram of the orthographic projection structure.

[0036] The labels in the diagram have the following meanings: 10-Main body; 101-Sampling port; 102-Equipment compartment; 11-Baking chamber; 12-Heating device; 13-Drive mechanism; 14-Inlet; 15-Outlet; 151-Outlet valve; 152-Observation window; 153-Outlet hopper; 154-Detection switch; 16-Exhaust duct; 161-Expansion head; 17-Inlet hopper; 171-Inlet valve; 18-Air venting pipe; 181-Air venting jacket; 182-Air vent; 19-Pull-out port; 20-Tilting cylinder; 21-Inlet / outlet; 22-Screening trough / hole; 23-Tilting paddle; 231-Auxiliary paddle; 24-Grid rod; 25-Front cylinder edge; 26-Rear cylinder plate; 27-Connecting column; 30-Receiving trough; 40-Sampling shovel; 41-Sampling trough; 50-PID temperature control module; 51-Control panel. Detailed Implementation

[0037] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0038] refer to Figures 1 to 9 ,like Figures 1 to 9 The coffee bean roaster shown includes a main body 10, a roasting chamber 11 inside the main body 10, a turning cylinder 20 and a heating device 12 inside the roasting chamber 11, the turning cylinder 20 being horizontally arranged, with an inlet / outlet 21 at one end and a drive mechanism 13 connected to the other end, the cylinder wall of the turning cylinder 20 having a sieve groove / hole 22 smaller than the size of coffee beans, and the inner wall of the turning cylinder 20 having a spirally arranged turning paddle 23; the main body 10 also has an inlet 14 and an outlet 15 connected to the roasting chamber 11 and corresponding to the inlet / outlet 21, the outlet 15 being located below the inlet 14 and corresponding to the 6 o'clock position on the end face of the inlet / outlet 21; the roasting chamber 11 also has an exhaust duct 16 and a receiving trough 30 located below the turning cylinder 20.

[0039] In the above structure, the spiral arranged stirring paddle 23 can guide the coffee beans to move towards the inlet and outlet 21 (discharging state) or away from the inlet and outlet 21 (roasting state) by the forward and reverse rotation of the stirring cylinder 20 while stirring the coffee beans during roasting; the sieve groove / hole 22 can sieve the chaff generated during roasting and fall into the receiving groove 30 below the stirring cylinder 20 for collection, while retaining the coffee beans in the stirring cylinder 20, so as to avoid the mixing of chaff and coffee beans affecting the uniformity of heating of the coffee beans and the roasting efficiency; the inlet 14 and the outlet 15 are respectively used for feeding and discharging, and the exhaust duct 16 is used for discharging the gas generated during roasting.

[0040] In the embodiment, the cylinder wall of the stirring cylinder 20 is composed of a plurality of grid rods 24 arranged along the circumferential direction thereof, and the sieve groove / hole 22 is formed between adjacent grid rod 24 groups; the gap between adjacent grid rods 24 is smaller than the minimum thickness size of the coffee beans.

[0041] In the above structure, the stirring cylinder 20 includes a front cylinder rim 25 forming the inlet and outlet 21 and a rear cylinder plate 26 connected with the driving mechanism 13, and the two ends of the grid rod 24 are connected with the front cylinder rim 25 and the rear cylinder plate 26 respectively; the front cylinder rim 25 and the rear cylinder plate 26 are further provided with connecting columns 27 arranged along the circumferential direction thereof to improve the connection rigidity.

[0042] In the embodiment, the main body 10 is provided with a feeding hopper 17, and the feeding hopper 17 is provided with a feeding valve 171 between the feeding hopper 17 and the feeding inlet 14; the discharging outlet 15 is provided with a discharging valve 151, and further includes a detection switch 154 for detecting the opening of the discharging valve 151 and controlling the heating device 12 to stop heating and the discharge of the coffee beans.

[0043] In the above structure, the feeding hopper 17 is used for pouring the green beans, and the opening of the feeding valve 171 allows the green beans in the feeding hopper 17 to enter the stirring cylinder 20 through the feeding inlet 14; the detection switch 154 controls the heating device 12 to stop heating when the discharging valve 151 is opened, so as to improve the taste of the coffee beans by controlling the temperature; after the roasting is completed, the discharging valve 151 is opened, and the coffee beans are discharged from the discharging outlet 15 by reversing the stirring cylinder 20.

[0044] In the embodiment, the discharging valve 151 is provided with an observation window 152.

[0045] In the above structure, the observation window 152 is preferably quartz / glass, which has good heat resistance and is convenient for observing the internal roasting condition.

[0046] In the embodiment, the discharging outlet 15 is provided with a discharging hopper 153 outside.

[0047] In the above structure, the discharging hopper 153 is used for receiving the discharged coffee beans, and the discharged coffee beans are collected and then discharged together.

[0048] In the embodiment, the outer wall of the exhaust channel 16 is sleeved with an air guide pipe 18 with a length greater than that of the exhaust channel 16, the air guide pipe 18 and the exhaust channel 16 are concentrically overlapped to form an air guide layer 181, the air guide pipe 18 is provided with an air guide port 182 connected with the air guide layer 181 at the concentrically overlapped section, the air guide port 182 is provided with an air guide fan (not shown in the figure) connected therewith, the air guide fan (not shown in the figure) introduces air into the air guide layer 181 and discharges the air to the extension end of the air guide pipe 18 and the exhaust channel 16 to form a negative pressure at the extension end of the exhaust channel 16 to guide the gas in the baking chamber 11 out; the extension end of the exhaust channel 16 and the air guide pipe 18 penetrates through the main body 10, and the air guide fan (not shown in the figure) is located in the equipment cabin 102 of the main body 10.

[0049] In the above structure, the air guide fan (not shown in the figure) establishes a positive pressure in the air guide layer 181 to flow to the extension end of the air guide pipe 18 and form a negative pressure area at the extension end of the exhaust channel 16 to achieve the purpose of guiding the gas in the baking chamber 11 out, which not only ensures that the air guide fan (not shown in the figure) does not contact the high-temperature gas, but also ensures the stability of the gas guiding and avoids the sudden change of the temperature in the baking chamber 11; meanwhile, the air guide fan (not shown in the figure) is located in the equipment cabin 102 of the main body 10 to improve the air flow in the equipment cabin 102 and cool the equipment cabin 102 while discharging the air.

[0050] In the embodiment, the extension end of the exhaust channel 16 is provided with an expansion head 161 with a diameter greater than that of the exhaust channel 16, the expansion head 161 reduces the flow cross section of the air guide layer 181 at this part to increase the flow velocity and improve the gas guiding efficiency.

[0051] In the above structure, the Venturi principle is used to ensure the smoothness of the air guiding.

[0052] In the embodiment, the baking chamber 11 is provided with a pull-out opening 19, and the material receiving groove 30 is detachably inserted into the pull-out opening 19 to realize the installation or extraction.

[0053] In the above structure, the pull-out opening 19 is plugged after the material receiving groove 30 is inserted into the pull-out opening 19, which facilitates the dumping of the bean skins.

[0054] In the embodiment, a sampling shovel 40 is further included, the sampling shovel 40 is provided with a sampling groove 41, the main body 10 is further provided with a sampling port 101, the sampling shovel 40 is detachably inserted into the sampling port 101 in a plug-in manner, and the sampling groove 41 enters the inlet and outlet 21 when the sampling shovel 40 is inserted into the sampling port 101.

[0055] In the structure, during normal baking, the sampling shovel 40 is inserted into the sampling port 101, and the sampling groove 41 is rotated to the downward position; when sampling is needed, the sampling shovel 40 is rotated to make the sampling groove 41 face upward, sampling is realized, and the sampling shovel 40 is pulled out from the sampling port 101.

[0056] In the embodiment, a PID temperature control module 50 electrically connected with the heating device 12 and a temperature measuring head (not shown in the figure) connected with the PID temperature control module 50 for detecting the temperature of the baking chamber 11 are further included.

[0057] In the structure, the control panel 51 is further included for setting the baking time and temperature, and the programmed control is executed by the PID (proportion integration differentiation) control through the PID temperature control module 50, so that the stability of baking is ensured.

[0058] In the embodiment, the heating device 12 preferably adopts an electric heating pipe; the driving mechanism 13 is driven by a motor cooperating with a speed reducer; the side of the turning paddle 23 facing the center of the turning barrel 20 is provided with a sub-paddle 231 centrally arranged in the length direction of the turning paddle 23, and the spiral direction of the sub-paddle 231 is opposite to that of the turning paddle 23.

[0059] In the structure, the sub-paddle 231 can ensure that the coffee beans are not too concentrated on the bottom of the side of the turning barrel 20 far from the inlet and outlet 21 during baking, the coffee beans higher than the turning paddle 23 are moved to the side of the inlet and outlet 21 in the opposite direction, and the coffee beans are prevented from reaching the position of the inlet and outlet 21, so that the heating effect is improved.

[0060] The above only describes the preferred embodiments of the present application, and it should be noted that, for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and the above-mentioned improvements and modifications should be considered as the protection scope of the present application.

Claims

1. A coffee bean roaster comprising a main body, a roasting chamber is arranged in the main body, a stirring cylinder and a heating device are arranged in the roasting chamber, characterized in that: The material turning barrel is horizontally arranged, one end of which is provided with an inlet and outlet, and the other end is connected with a driving mechanism; the barrel wall of the material turning barrel is provided with sieve grooves / holes smaller than the size of coffee beans; the inner barrel wall of the material turning barrel is provided with spiral arranged material turning paddles; the main body is further provided with a baking chamber, an inlet and an outlet corresponding to the inlet and outlet, the outlet is located below the inlet and corresponds to the 6 o'clock position of the end face of the inlet and outlet; the baking chamber is further provided with an exhaust passage and a receiving groove below the material turning barrel.

2. A coffee bean roaster as claimed in claim 1, characterised in that: The barrel wall of the material turning barrel is composed of a plurality of grid rods arranged along the circumferential direction, and sieve grooves / holes are formed between adjacent grid rod groups; the gap between adjacent grid rods is smaller than the minimum thickness size of coffee beans.

3. A coffee bean roaster as claimed in claim 1, characterised in that: The main body is provided with a feed hopper, and a feed valve is arranged between the feed hopper and the inlet; the outlet is provided with an outlet valve, and further comprises a detection switch for detecting the opening of the outlet valve and controlling the heating device to stop heating and the discharge of coffee beans.

4. A coffee bean roaster as claimed in claim 3, characterised in that: The outlet valve is provided with an observation window.

5. A coffee bean roaster as claimed in claim 1, characterised in that: The outside of the outlet is provided with an outlet hopper.

6. A coffee bean roaster as claimed in claim 1, characterised in that: The outer wall of the exhaust passage is sleeved with an air guide pipe with a length greater than that of the exhaust passage, and the air guide pipe and the exhaust passage are concentrically overlapped to form an air guide layer; the pipe wall of the air guide pipe in the concentrically overlapped area is provided with an air guide port connected with the air guide layer, and the air guide port is provided with an air guide fan connected therewith, the air guide fan introduces air into the air guide layer and discharges it to the extension end of the air guide pipe and the exhaust passage, so that the extension end of the exhaust passage forms a negative pressure to guide the gas in the baking chamber out; the end of the exhaust passage and the air guide pipe penetrates out of the main body, and the air guide fan is located in the equipment cabin of the main body.

7. A coffee bean roaster as claimed in claim 6, characterised in that: The extension end of the exhaust passage is provided with an expansion head with a diameter greater than that of the exhaust passage, which reduces the flow cross section of the air guide layer at this part to increase the flow velocity and improve the gas extraction efficiency.

8. A coffee bean roaster as claimed in claim 1, characterized in that: The bottom of the baking chamber is provided with a pull-out opening, and the receiving groove is pulled out to realize installation or extraction.

9. A coffee bean roaster as claimed in claim 1, characterized in that: Further comprising a sampling shovel, the sampling shovel is provided with a sampling groove; the main body is further provided with a sampling port; the sampling shovel and the sampling port are detachably inserted and matched, and when the sampling shovel is inserted into the sampling port, the sampling groove enters the inlet and outlet.

10. A coffee bean roaster as claimed in any one of claims 1 to 9, wherein: Further comprising a PID temperature control module electrically connected with the heating device, and a temperature measuring head connected with the PID temperature control module for detecting the temperature of the baking chamber.

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