Air exchange type bamboo salt roasting device

Abstract

The utility model discloses a ventilation formula bamboo salt firing device relates to bamboo salt firing technical field, including main cylinder, ventilation unit and bamboo cylinder installation unit. The utility model discloses be convenient for bamboo cylinder to load and take out, and motor no.

Description

Technical Field

[0001] This utility model relates to the field of bamboo salt firing technology, specifically a ventilation-type bamboo salt firing device. Background Technology

[0002] Bamboo salt firing is a traditional salt-making technique. It involves filling high-quality mineral salt, well salt, or sun-dried salt into bamboo tubes that have grown for 3-5 years and are about 7cm in diameter. The tubes are then sealed with loess and calcined at a high temperature of 800-1500℃ for about 10 hours in a kiln made of loess or a specific furnace. After the first firing, the salt tubes are crushed and refilled with bamboo for firing again. Good bamboo salt needs to be fired repeatedly up to nine times. Under high temperatures, the bamboo sap, pine resin, and minerals from the loess seep into the salt and remove impurities and harmful substances, ultimately forming bamboo salt crystals.

[0003] Existing bamboo salt firing devices are inconvenient to install bamboo tubes, thus failing to effectively meet the needs of repeated bamboo salt firing. Furthermore, the heating process cannot guarantee the uniformity of heating the bamboo tubes, resulting in uneven properties of the salt inside. In addition, ventilation is a necessary step in bamboo salt firing, but existing ventilation methods mostly use direct airflow introduction. The upward-flowing gas has a short transit time in the firing chamber, easily carrying away heat and causing temperature fluctuations, which adversely affect bamboo salt firing. Therefore, we propose a ventilation-type bamboo salt firing device. Utility Model Content

[0004] The technical problem this invention aims to solve is to overcome existing defects and provide a ventilation-type bamboo salt firing device that facilitates the loading and unloading of bamboo tubes. Motor 2 drives the central gear to rotate, which in turn drives the four outer gear rings to rotate, allowing the four loaded bamboo tubes to rotate simultaneously during heating, effectively improving the uniformity of heating. Motor 1 drives the impeller to generate airflow, and the air inlet ensures smooth entry of external air into the main cylinder. The angled air outlet inside the air guide plate allows the air to spiral upwards within the main cylinder. Under the heating effect of the heating wire, the hot air can rotate and flow past the outside of the bamboo tubes, increasing the time the hot air acts on the bamboo tube surface, thus achieving a stable heating effect. After the movable cover is installed, the insert pipe connects to the exhaust pipe, and the air pump extracts gas from the top side inside the main cylinder, thus achieving a complete ventilation operation and effectively solving the problems in the background technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a ventilation-type bamboo salt firing device, comprising a main cylinder, a ventilation unit, and a bamboo tube installation unit;

[0006] Main cylinder: vertically installed, with a top cover fixedly connected to the upper end;

[0007] The ventilation unit includes an inner cylinder seat, a motor bracket, a motor, an impeller, an air inlet channel, and a guide plate. The inner cylinder seat is fixedly connected to the lower part of the main cylinder body. The interior of the inner cylinder seat has a funnel-shaped chamber structure. Three motor brackets are fixedly connected in a circular array in the vertical channel on the lower side of the chamber. Motor 1 is mounted and clipped in the middle of the upper end of the three motor brackets. The output shaft of motor 1 faces upward and an impeller is fixedly installed at its end. A guide plate is fixedly connected to the upper port of the inner cylinder seat. The interior of the guide plate has a ring of inclined air outlets in a circular array. Three sets of air inlets are equidistantly opened at the bottom of the inner cylinder seat. The air inlets are connected to the internal chamber of the inner cylinder seat.

[0008] Bamboo tube installation unit: Installed on the upper side of the top cover.

[0009] The inner cylinder base is used for the installation of motor one and the air guide plate. The motor bracket is used to support motor one, and the three motor brackets can work together to secure motor one. Motor one drives the fan impeller to rotate to form airflow. The air inlet channel can ensure that the outside air can smoothly enter the main cylinder. The oblique air outlet inside the air guide plate can make the passing air spiral upward inside the main cylinder. Under the heating effect of the heating wire, the hot air can rotate and flow through the outside of the bamboo tube, increasing the time that the hot air acts on the surface of the bamboo tube, thereby achieving a stable heating effect and preventing the air from flowing directly upward, which would cause the heat inside the main cylinder to dissipate too quickly.

[0010] Furthermore, the ventilation unit also includes a movable cover, exhaust pipes, inserts, an air pump, and a filter. Four vertical exhaust pipes are fixedly connected to the upper end of the top cover, arranged in a circular array and all connected to the interior of the lower main cylinder. Four inserts are fixedly connected to the lower end of the movable cover in a circular array, with their lower ends inserted into the exhaust pipes respectively. An air pump is embedded at the center of the movable cover, and the upper ends of the four inserts are connected to the air pump's intake port. The air pump's exhaust port faces vertically upwards, and a filter is installed at the exhaust port. The movable cover is installed on the upper side of the device via an insert mechanism, facilitating the insertion and removal of the bamboo tube. After the movable cover is inserted, the inserts connect with the exhaust pipes, and the air pump draws gas from the top side of the main cylinder, thus achieving a complete ventilation operation. The filter filters the gas at the air pump's exhaust end to adsorb pollutants contained in the gas.

[0011] Furthermore, the bamboo tube installation unit includes an installation sleeve, a gear ring, a rubber retaining ring, a bamboo tube, and a central gear. A second motor is embedded at the center of the top cover, with its output shaft facing upwards and a central gear fixedly connected to its end. A circular installation sleeve is rotatably connected to the front, back, left, and right positions of the top cover. The installation sleeve has an insertion hole inside, which penetrates the top cover downwards. A gear ring is concentrically fixed to the upper end of each installation sleeve, and all four gear rings mesh with the central gear. The inner side of the upper end of the gear ring has four square slots arranged in a circumferential array. The rubber retaining ring is a circular structure and is tightly fastened to the outside of the bamboo tube. Four square inserts are fixedly connected to the outer side of the rubber retaining ring in a circumferential array. The inserts are inserted into the slots on the inner side of the gear ring. The rubber retaining ring is secured to the upper side of the gear ring by the four inserts, at which point the bamboo tube is inserted into the main tube. The mounting bracket is used to install the toothed ring and enable it to rotate. The rubber retainer is tightened on the outside of the bamboo tube and is limited and locked inside the upper end of the toothed ring by the four insert blocks on the outside, thus completing the insertion of the bamboo tube. The second motor drives the central gear to rotate, which in turn drives the four toothed rings on the outside to rotate, so that the four inserted bamboo tubes can rotate while being heated, effectively improving the uniformity of heating of the bamboo tubes.

[0012] Furthermore, the bamboo tube mounting unit includes a ceramic column and a heating wire. The ceramic column is fixedly connected to the upper center of the air guide plate, and the heating wire is wound around the outside of the ceramic column. The ceramic column is used for mounting the heating wire, which is installed on the central axis inside the main tube, thereby enabling uniform heating of the inside of the main tube.

[0013] Furthermore, the ventilation unit also includes sealing rings, with one sealing ring installed on the outer side of each insertion tube, the lower end of which fits against the end of the exhaust pipe. The sealing rings provide a seal at the connection between the insertion tube and the exhaust pipe, ensuring good air pumping performance.

[0014] Furthermore, it also includes fixing feet and a temperature control panel. Four fixing feet are fixedly connected in a circular array at the lower end of the main body. Through holes for bolts are opened inside the fixing feet. A temperature control panel is installed on the front side of the main body. The temperature control panel includes a digital display screen and temperature adjustment buttons. The input end of the heating wire is electrically connected to the output end of an external power supply through the temperature control panel. By adding bolts to the fixing feet, the main body can be fixed. The temperature control panel is used to display and adjust the heating temperature of the heating wire.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This ventilated bamboo salt firing device has the following advantages:

[0016] 1. The movable cover is installed on the upper side of the device by insertion, which facilitates the insertion and removal of bamboo tubes. The mounting bracket is used for the installation of the gear ring and enables the gear ring to rotate. The rubber retainer is tightened on the outside of the bamboo tube and is limited and locked in the upper part of the gear ring by the four insert blocks on the outside, thus completing the insertion of the bamboo tube. The motor drives the central gear to rotate, which in turn drives the four gear rings on the outside to rotate, so that the four inserted bamboo tubes can rotate while being heated, effectively improving the uniformity of heating of the bamboo tubes.

[0017] 2. The motor drives the impeller to rotate, creating airflow. The air intake ensures that external air enters the main cylinder smoothly. The angled air outlet inside the air guide plate allows the air to spiral upward inside the main cylinder. Under the heating effect of the heating wire, the hot air can rotate and flow over the outside of the bamboo tube, increasing the time that the hot air acts on the surface of the bamboo tube, thus achieving a stable heating effect. After the movable cover is installed, the insert pipe connects to the exhaust pipe. The air pump draws gas from the top side inside the main cylinder, thus achieving a complete ventilation operation. The filter can filter the gas at the exhaust end of the air pump to adsorb pollutants contained in the gas.

[0018] 3. This utility model facilitates the insertion and removal of bamboo tubes. The rubber retaining ring is secured inside the upper side of the toothed ring by four insert blocks. At this time, the bamboo tubes are inserted into the main body, and the heating wire in the middle heats the four bamboo tubes. Motor 2 drives the central gear to rotate, which in turn drives the four outer toothed rings to rotate, so that the four inserted bamboo tubes can rotate while being heated, effectively improving the uniformity of heating of the bamboo tubes. Motor 1 drives the fan impeller to rotate to form airflow. The air inlet channel ensures that the external air can smoothly enter the main body. The oblique air outlet inside the air guide plate allows the passing air to spiral upward inside the main body. Under the heating effect of the heating wire, the hot air can rotate and flow past the outside of the bamboo tubes, increasing the time that the hot air acts on the surface of the bamboo tubes, thereby achieving a stable heating effect. After the movable cover is inserted, the insert pipe connects with the exhaust pipe. The air pump draws gas from the top side inside the main body, thereby realizing a complete ventilation operation. The filter can filter the gas at the exhaust end of the air pump to adsorb pollutants contained in the gas. Attached Figure Description

[0019] Figure 1 This is a partial sectional view of the present invention;

[0020] Figure 2 This is a partial structural diagram of the ventilation unit in this utility model;

[0021] Figure 3 This is a partial structural diagram of the bamboo tube installation unit in this utility model;

[0022] Figure 4This is a schematic diagram of the internal structure of the main cylinder in this utility model;

[0023] Figure 5 This is a schematic diagram of the lower structure of the main cylinder in this utility model;

[0024] Figure 6 This is a schematic diagram of the overall external structure of this utility model.

[0025] In the diagram: 1 Main cylinder, 2 Top cover, 3 Ventilation unit, 31 Inner cylinder seat, 32 Motor bracket, 33 Motor 1, 34 Fan impeller, 35 Air inlet channel, 36 Air guide plate, 37 Movable cover, 38 Exhaust pipe, 39 Insert pipe, 310 Air pump, 311 Filter, 312 Sealing ring, 4 Bamboo tube mounting unit, 41 Mounting sleeve, 42 Gear ring, 43 Rubber retaining ring, 44 Bamboo tube, 45 Central gear, 46 Ceramic column, 47 Heating wire, 48 Clip, 5 Fixing foot, 6 Temperature control panel. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-6 This embodiment provides a technical solution: a ventilation-type bamboo salt firing device, including a main cylinder 1, a ventilation unit 3 and a bamboo tube installation unit 4;

[0028] Main cylinder 1: Vertically installed, with a top cover 2 fixedly connected to the upper end;

[0029] Ventilation unit 3: includes inner cylinder seat 31, motor bracket 32, motor 33, impeller 34, air inlet duct 35 and air guide plate 36. The inner cylinder seat 31 is fixedly connected to the lower part of the main cylinder 1. The inner cylinder seat 31 has a funnel-shaped chamber structure inside. Three motor brackets 32 are fixedly connected in a circular array in the vertical channel on the lower side of the chamber. Motor 33 is installed and clamped in the middle of the upper end of the three motor brackets 32. The output shaft of motor 33 faces upward and an impeller 34 is fixedly installed at the end. The air guide plate 36 is fixedly connected to the upper port of the inner cylinder seat 31. The air guide plate 36 has a circle of inclined air outlets in a circular array inside. Three sets of air inlet ducts 35 are equidistantly opened at the bottom of the inner cylinder seat 31. The air inlet ducts 35 are connected to the internal chamber of the inner cylinder seat 31.

[0030] Bamboo tube installation unit 4: installed on the upper side of the top cover 2.

[0031] The inner cylinder base 31 is used for the installation of motor 33 and air guide plate 36. The motor bracket 32 ​​is used to support motor 33, and the three motor brackets 32 can work together to secure motor 33. Motor 33 drives the impeller 34 to rotate to form airflow. The air inlet 35 can ensure that external air enters the main cylinder 1 smoothly. The oblique air outlet inside the air guide plate 36 can make the air spiral upward inside the main cylinder 1. Under the heating action of the heating wire 47, the hot air can rotate and flow through the outside of the bamboo tube 44, increasing the time that the hot air acts on the surface of the bamboo tube, thereby achieving a stable heating effect and avoiding the wind from flowing directly upward, which would cause the heat inside the main cylinder 1 to dissipate too quickly.

[0032] The ventilation unit 3 also includes a movable cover 37, an exhaust pipe 38, an insertion tube 39, an air pump 310, and a filter 311. The upper end of the top cover 2 is fixedly connected to four vertical exhaust pipes 38, which are arranged in a circular array and are all connected to the interior of the lower main cylinder 1. The lower end of the movable cover 37 is fixedly connected to four insertion tubes 39 in a circular array. The lower ends of the four insertion tubes 39 are respectively inserted into the interior of the exhaust pipes 38. An air pump 310 is embedded at the center of the movable cover 37. The upper ends of the four insertion tubes 39 are all connected to the air intake of the air pump 310. The exhaust port of the air pump 310 faces vertically upward, and a filter 311 is installed at the exhaust port. The movable cover 37 is installed on the upper side of the device by insertion, which facilitates the insertion and removal of the bamboo tube 44. After the movable cover 37 is inserted, the insertion tube 39 is connected to the exhaust pipe 38. The air pump 310 draws gas from the top side of the main cylinder 1 to achieve a complete air exchange operation. The filter 311 can filter the gas at the exhaust end of the air pump 310 to adsorb polluting gases contained in the gas.

[0033] The bamboo tube mounting unit 4 includes a mounting sleeve 41, a gear ring 42, a rubber retaining ring 43, a bamboo tube 44, and a central gear 45. A second motor is embedded at the center of the top cover 2, with its output shaft facing upwards and a central gear 45 fixedly connected to its end. A circular mounting sleeve 41 is rotatably connected to the front, back, left, and right positions of the top cover 2. Each mounting sleeve 41 has an insertion hole that penetrates downwards through the top cover 2. A bamboo tube is concentrically fixed to the upper end of each mounting sleeve 41. The four gear rings 42 are meshed with the central gear 45. The upper inner side of the gear ring 42 has four square slots arranged in a circumferential array. The rubber retaining ring 43 is a circular ring structure and is tightly fastened to the outside of the bamboo tube 44. Four square inserts are fixedly connected to the outside of the rubber retaining ring 43 in a circumferential array. The inserts are inserted into the slots on the inner side of the gear ring 42. The rubber retaining ring 43 is limited and locked inside the upper side of the gear ring 42 by the four inserts. At this time, the bamboo tube 44 is inserted into the inside of the main tube 1. Mounting sleeve 41 is used to mount gear ring 42 and enable gear ring 42 to rotate. Rubber retainer ring 43 is tightened on the outside of bamboo tube 44 and is limited and locked inside the upper end of gear ring 42 by four insert blocks on the outside, thus completing the insertion of bamboo tube 44. Motor 2 drives the middle gear 45 to rotate, which in turn drives the four outer gear rings 42 to rotate, so that the four inserted bamboo tubes 44 can rotate while being heated, effectively improving the uniformity of heating of bamboo tube 44.

[0034] The bamboo tube mounting unit 4 includes a ceramic column 46 and a heating wire 47. The ceramic column 46 is fixedly connected to the upper center of the air guide plate 36, and the heating wire 47 is wound around the outside of the ceramic column 46. The ceramic column 46 is used for mounting the heating wire 47, which is installed on the central axis inside the main tube 1, thereby enabling uniform heating of the inside of the main tube 1.

[0035] The ventilation unit 3 also includes a sealing ring 312. A sealing ring 312 is installed on the outside of each insertion tube 39, and the lower end of the sealing ring 312 fits against the end of the exhaust pipe 38. The sealing ring 312 can play a sealing role at the insertion point of the insertion tube 39 and the exhaust pipe 38 to ensure good air pumping effect of the air pump 310.

[0036] It also includes fixing feet 5 and a temperature control panel 6. Four fixing feet 5 are fixedly connected in a circular array at the lower end of the main body 1. Through holes for bolts are opened inside the fixing feet 5. The temperature control panel 6 is installed on the front side of the main body 1. The temperature control panel 6 includes a digital display screen and temperature adjustment buttons. The input end of the heating wire 47 is electrically connected to the output end of an external power supply through the temperature control panel 6. By adding bolts to the fixing feet 5, the main body 1 can be fixed. The temperature control panel 6 is used to display and adjust the heating temperature of the heating wire 47.

[0037] The working principle of the ventilation-type bamboo salt firing device provided by this utility model is as follows: In this device, the movable cover 37 is installed on the upper side of the device by insertion, which facilitates the insertion and removal of bamboo tubes 44; the mounting sleeve 41 is used for the installation of the gear ring 42 and enables the gear ring 42 to rotate; the rubber retaining ring 43 is tightened on the outside of the bamboo tube 44 and is limited and locked in the upper part of the gear ring 42 by the four insert blocks on the outside, thereby completing the insertion of the bamboo tube 44; the motor 2 drives the central gear 45 to rotate, which in turn drives the four gear rings 42 on the outside to rotate, so that the four bamboo tubes 44 can rotate while being heated, effectively improving the uniformity of heating of the bamboo tubes 44; the ceramic column 46 is used for the installation of the heating wire 47, which is installed on the central axis inside the main cylinder 1, thereby enabling uniform heating of the inside of the main cylinder 1. This device also features a reliable ventilation unit 3. The inner cylinder base 31 is used for mounting the motor 33 and the air guide plate 36. The motor bracket 32 ​​supports the motor 33, and the three motor brackets 32 work together to secure the motor 33. The motor 33 drives the impeller 34 to rotate, creating airflow. The air inlet duct 35 ensures smooth entry of external air into the main cylinder 1. The angled air outlet inside the air guide plate 36 allows the air to spiral upwards inside the main cylinder 1. Heated by the heating wire 47, the hot air rotates and flows past the outside of the bamboo tube 44, increasing... The duration of hot air contact with the bamboo tube surface ensures a stable heating effect, preventing excessive heat loss from the main tube 1 due to direct upward airflow. After the movable cover 37 is installed, the insertion tube 39 connects with the exhaust pipe 38. The air pump 310 extracts gas from the top side of the main tube 1, achieving complete ventilation. The filter 311 filters the gas at the exhaust end of the air pump 310 to adsorb pollutants. The sealing ring 312 seals the connection between the insertion tube 39 and the exhaust pipe 38, ensuring good air extraction by the air pump 310. Furthermore, bolts are added to the fixing feet 5 to secure the main tube 1. The temperature control panel 6 displays and adjusts the heating temperature of the heating wire 47.

[0038] It is worth noting that, in the above embodiments, the input end of the heating wire 47 is electrically connected to the output end of the external power supply through the temperature control panel 6, and the input ends of motor 1 33 and motor 2 are electrically connected to the output end of the external power supply through the external control switch group. The temperature control panel 6 and the external control switch group control the operation of the corresponding electrical devices using methods commonly used in the prior art.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A ventilation-type bamboo salt firing device, characterized in that: It includes the main cylinder (1), the ventilation unit (3) and the bamboo tube installation unit (4); Main cylinder (1): Vertically set, and a top cover (2) is fixedly connected to the upper end; Ventilation unit (3): includes inner cylinder seat (31), motor bracket (32), motor one (33), impeller (34), air inlet (35) and air guide plate (36). The inner cylinder seat (31) is fixedly connected to the lower part of the main cylinder (1). The interior of the inner cylinder seat (31) is a funnel-shaped chamber structure. Three motor brackets (32) are fixedly connected in a circular array in the vertical channel on the lower side of the chamber. Motor one (33) is installed and clipped on the inner cylinder seat (34). At the upper middle of the three motor brackets (32), the output shaft of motor one (33) faces upward and a fan impeller (34) is fixedly installed at the end. A guide plate (36) is fixedly connected to the upper port of the inner cylinder seat (31). The inside of the guide plate (36) has a ring of inclined air outlets arranged in a circular array. Three sets of air inlet channels (35) are equidistantly opened at the bottom of the inner cylinder seat (31). The air inlet channels (35) are connected to the internal chamber of the inner cylinder seat (31). Bamboo tube installation unit (4): installed on the upper side of the top cover (2).

2. The ventilation-type bamboo salt firing device according to claim 1, characterized in that: The ventilation unit (3) also includes a movable cover (37), an exhaust pipe (38), a tube (39), an air pump (310), and a filter (311). The upper end of the top cover (2) is fixedly connected to four vertical exhaust pipes (38). The four exhaust pipes (38) are arranged in a circular array and are all connected to the interior of the lower main cylinder (1). The lower end of the movable cover (37) is fixedly connected to four tubes (39) in a circular array. The lower ends of the four tubes (39) are respectively inserted into the interior of the exhaust pipes (38). An air pump (310) is embedded at the center of the movable cover (37). The upper ends of the four tubes (39) are all connected to the air intake of the air pump (310). The exhaust port of the air pump (310) is vertically upward and a filter (311) is installed at the exhaust port.

3. The ventilation-type bamboo salt firing device according to claim 1, characterized in that: The bamboo tube installation unit (4) includes an installation sleeve (41), a gear ring (42), a rubber retainer ring (43), a bamboo tube (44), and a central gear (45). A second motor is embedded at the center of the top cover (2), with the output shaft of the second motor facing upwards and the central gear (45) fixedly connected to its end. A circular installation sleeve (41) is rotatably connected to the front, back, left, and right positions of the top end of the top cover (2). The installation sleeve (41) has an insertion hole inside, which penetrates the top cover (2) downwards. The upper ends of each installation sleeve (41) are concentrically fixedly connected. There is a toothed ring (42), and all four toothed rings (42) are meshed with the central gear (45). The upper inner side of the toothed ring (42) has four square slots arranged in a circular array. The rubber retainer (43) is a circular ring structure and is tightly fastened to the upper outer side of the bamboo tube (44). The outer side of the rubber retainer (43) is fixedly connected with four square inserts arranged in a circular array. The inserts are inserted into the slots on the inner side of the toothed ring (42). The rubber retainer (43) is limited and locked in the upper side of the toothed ring (42) by the four inserts. At this time, the bamboo tube (44) is inserted into the interior of the main tube (1).

4. The ventilation-type bamboo salt firing device according to claim 3, characterized in that: The bamboo tube installation unit (4) includes a ceramic column (46) and an electric heating wire (47). The ceramic column (46) is fixedly connected to the upper center of the air guide plate (36), and the electric heating wire (47) is wound around the outside of the ceramic column (46).

5. The ventilation-type bamboo salt firing device according to claim 2, characterized in that: The ventilation unit (3) also includes a sealing ring (312), and a sealing ring (312) is installed on the outside of each tube (39), with the lower end of the sealing ring (312) fitting against the end of the exhaust pipe (38).

6. The ventilation-type bamboo salt firing device according to claim 1, characterized in that: It also includes fixed feet (5) and temperature control panel (6). The lower end of the main body (1) is fixedly connected with four fixed feet (5) in a circular array. The fixed feet (5) have bolt through holes. The front side of the main body (1) is equipped with a temperature control panel (6). The temperature control panel (6) includes a digital display screen and temperature adjustment buttons. The input end of the heating wire (47) is electrically connected to the output end of the external power supply through the temperature control panel (6).

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