Vacuum heating stove

Abstract

The utility model provides a vacuum heating furnace which comprises a vacuum furnace body, a heating assembly is arranged on the lower side in the vacuum furnace body, a heat exchange assembly is arranged on the upper side in the vacuum furnace body, and an electric heating pipe works according to a set temperature value. Therefore, when the water is heated to 50 DEG C (the highest temperature is controlled to be 75 DEG C), the water begins to be vaporized into steam, the steam rises to the upper side in the vacuum furnace body, heat is adsorbed by the heat exchange pipes, and then the air blower is started to work to supply air to the heat exchange pipes through the dispersion box, so that normal-temperature air enters the heat exchange pipes for heat exchange; the heated air passes through the air outlet collecting box and the air outlet pipe to be guided into an external heating room for heating, meanwhile, the multiple heat exchange pipes after heat exchange can be cooled, at the moment, surrounding water vapor can become water drops when encountering cold, the water drops fall down to the lower side in the vacuum furnace body again to be circularly heated and used, and therefore the use amount of purified water in the vacuum furnace body is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating furnaces, in particular to a vacuum heating furnace. Background Technique

[0002] In some factories and enterprises far from urban areas in the north of our country, due to the lack of connection of centralized heating pipelines, corresponding heating equipment will be installed in the designated area of the workshop to heat the interior of the workshop, so as to avoid the low temperature inside the workshop causing frostbite to the staff when winter comes.

[0003] Some heating equipment for workshops in the prior art are mostly electric water heaters or vacuum hot water boilers. The electric water heater uses a heat medium with an electric heating tube to heat under normal pressure, and then uses a pump and the heat medium to circulate and exchange heat in an external heating system, with high power consumption. While the vacuum hot water boiler uses the heat medium under negative pressure, and there is an internal heat exchanger to use a pump and the heat medium to circulate and exchange heat in the external heating system. When using a pump and the heat medium to circulate and exchange heat for heating in the external heating system, the heat loss is relatively high, the thermal efficiency is low, there are many intermediate conversion devices, the cost is high, the failure rate is high, and it is not safe to work under normal pressure or positive pressure, and the practicability is poor. Content of the Utility Model

[0004] The purpose of the utility model is to provide a vacuum heating furnace to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution:

[0006] A vacuum heating furnace, including a positioning substrate and a vacuum furnace body. The bottom of the vacuum furnace body is fixedly connected with the positioning substrate. A heating component is arranged on the lower side inside the vacuum furnace body, and the heating component is used to heat the water inside the vacuum furnace body. A heat exchange component is arranged on the upper side inside the vacuum furnace body, and the heat exchange component is used to adsorb the heat in the water vapor inside the vacuum furnace body.

[0007] Preferably, the heating component includes an electrode type liquid level gauge, a vacuum pressure gauge, a valve, an electric heating tube and a fixed plug. The electrode type liquid level gauge is installed on the right side of the upper end face of the vacuum furnace body. The vacuum pressure gauge is installed on the front side of the upper end face of the vacuum furnace body. The valve is installed on the right side of the upper end face of the vacuum furnace body. The fixed plug is installed on the lower side of the front end face of the vacuum furnace body, and the electric heating tube is fixedly connected to the rear end of the fixed plug.

[0008] Preferably, the heat exchange assembly includes an air outlet header, an air outlet pipe, a blower, heat exchange tubes, and a dispersion box. A plurality of heat exchange tubes are fixedly connected to the upper side inside the vacuum furnace body. A dispersion box is fixedly connected to the upper side of the right end face of the vacuum furnace body. A blower is installed at the inlet of the right end face of the dispersion box. An air outlet header is fixedly connected to the upper side of the left end face of the vacuum furnace body. An air outlet pipe is fixedly connected to the outlet of the upper end face of the air outlet header.

[0009] Preferably, a plurality of heat exchange tubes are fixedly connected, and the plurality of heat exchange tubes have the same specifications. The center distance between the plurality of heat exchange tubes is 35 cm, the outer diameter of the heat exchange tubes is 19 cm, and the plurality of heat exchange tubes are arranged at equal intervals.

[0010] Preferably, a liquid level observation window is installed on the right side of the front end face of the vacuum furnace body, and the center height of the liquid level observation window is 240 cm. A thermometer is installed on the left side of the front end face of the vacuum furnace body. The left-right width and the front-back width of the vacuum furnace body are both 300 cm, and the up-down height of the vacuum furnace body is 600 cm.

[0011] Preferably, a sealing ring is provided on the rear end face of the fixed plug plate. The fixed plug plate is of a detachable structure. The electric heating tube is connected to an external temperature controller through a wire.

[0012] Preferably, a drain valve is installed on the lower side of the right end face of the vacuum furnace body, and the outlet of the drain valve is communicated with the inlet of an external sewer pipe through a pipeline.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. After adding the required amount of water into the vacuum furnace body and evacuating it, by making the electric heating tube work according to the set temperature value, at this time, because the inside of the vacuum furnace body is in a negative pressure vacuum state, the water starts to vaporize into steam when heated to 50 degrees and rises to the upper side inside the vacuum furnace body, where the heat is adsorbed by a plurality of heat exchange tubes. Since the vacuum furnace body is an integral structure and is used in a vacuum negative pressure state, the water is always in a state of not being at a high temperature of 50 degrees during the heating process. Therefore, it is safe and reliable during actual use.

[0015] 2. After the thermometer shows that the water temperature inside the vacuum furnace body is 50 degrees, the blower can be started to send air into multiple heat exchange tubes through the dispersion box. At this time, the heat adsorbed by the multiple heat exchange tubes will be exchanged with the passing cold air. The heated air will pass through the air outlet header and the air outlet pipe and be guided to the external heating room for heating. At the same time, the multiple heat exchange tubes after heat exchange will cool down. At this time, the surrounding water vapor will condense into water droplets and fall downward again to the lower side of the vacuum furnace body for cyclic heating use. And because the heat exchange tubes are arranged inside the vacuum furnace body and direct heat exchange is carried out by air convection, the cycle process of water vaporization (rising) and cooling (falling) is completed, reducing heat loss, improving thermal efficiency, and having good practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the main structure of the present utility model;

[0017] Figure 2 is a rear view of the vacuum furnace body of the present utility model;

[0018] Figure 3 is a front elevation sectional view of the heat exchange component and the heating component of the present utility model;

[0019] Figure 4 is a left elevation sectional view of the heat exchange component and the heating component of the present utility model;

[0020] Figure 5 is a structural diagram of the blower and the dispersion box of the present utility model.

[0021] In the figure: 1. positioning substrate; 2. vacuum furnace body; 3. heat exchange component; 31. air outlet header; 32. air outlet pipe; 33. blower; 34. heat exchange tube; 35. dispersion box; 4. heating component; 41. liquid level observation window; 42. thermometer; 43. electrode type liquid level gauge; 44. vacuum pressure gauge; 45. valve; 46. drain valve; 47. electric heating tube; 48. fixed plug; 481. sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-5 , the present utility model provides a technical solution:

[0024] Embodiment 1:

[0025] A vacuum heating furnace, comprising a positioning base plate 1 and a vacuum furnace body 2. The bottom of the vacuum furnace body 2 is fixedly connected to the positioning base plate 1. The positioning base plate 1 is fixed to the external ground by external expansion bolts. The positioning base plate 1 can position the vacuum furnace body 2, making the use stability of the vacuum furnace body 2 better. The left-right width and front-back width of the vacuum furnace body 2 are both 300 cm, and the up-down height of the vacuum furnace body 2 is 600 cm. After the vacuum furnace body 2 is installed in place, the required climbing steel frames will be welded around it for the staff to patrol or operate up and down the vacuum furnace body 2. A heating component 4 is arranged on the lower side inside the vacuum furnace body 2, and the heating component 4 is used to heat the water inside the vacuum furnace body 2. A heat exchange component 3 is arranged on the upper side inside the vacuum furnace body 2, and the heat exchange component 3 is used to adsorb the heat in the water vapor inside the vacuum furnace body 2.

[0026] The heating component 4 includes an electrode type liquid level gauge 43, a vacuum pressure gauge 44, a valve 45, an electric heating tube 47 and a fixed plug plate 48. The electrode type liquid level gauge 43 is installed on the right side of the upper end face of the vacuum furnace body 2. When working, the electrode type liquid level gauge 43 can measure the high and low liquid levels by using the conductivity of water, so that the staff can accurately know the water level inside the vacuum furnace body 2. The vacuum pressure gauge 44 is installed on the front side of the upper end face of the vacuum furnace body 2. The vacuum pressure gauge 44 can display the internal vacuum pressure of the vacuum furnace body 2 in real time. The valve 45 is installed on the right side of the upper end face of the vacuum furnace body 2. A connecting pipe is installed at the upper end face inlet of the valve 45. When the valve 45 is opened, it is convenient for the staff to supplement water into the vacuum furnace body 2 through the connecting pipe, or connect the vacuum furnace body 2 with an external vacuum pump through the connecting pipe, so that the external vacuum pump can evacuate the inside of the vacuum furnace body 2. The fixed plug plate 48 is installed on the lower side of the front end face of the vacuum furnace body 2. The fixed plug plate 48 can support and fix the electric heating tube 47. The fixed plug plate 48 is a detachable structure, and the detachable fixed plug plate 48 is convenient for the staff to disassemble, replace and maintain the electric heating tube 47 in the later stage.

[0027] The rear end of the fixed plug plate 48 is fixedly connected with an electric heating tube 47. The electric heating tube 47 is connected to an external temperature controller through a wire. When the electric heating tube 47 is working, it can heat the water inside the vacuum furnace body 2. A liquid level observation window 41 is installed on the right side of the front end face of the vacuum furnace body 2, and the central height of the liquid level observation window 41 is 240 cm. The liquid level observation window 41 with a central height of 240 cm facilitates the staff to observe the internal situation of the vacuum furnace body 2 in real time with the help of an external step ladder. A thermometer 42 is installed on the left side of the front end face of the vacuum furnace body 2. The thermometer 42 can display the water temperature inside the vacuum furnace body 2 in real time. A sealing ring 481 is arranged on the rear end face of the fixed plug plate 48. The material of the sealing ring 481 is fluororubber. The sealing ring 481 made of fluororubber makes the sealing between the fixed plug plate 48 and the vacuum furnace body 2 better. A drain valve 46 is installed on the lower side of the right end face of the vacuum furnace body 2, and the outlet of the drain valve 46 is connected to the inlet of an external sewer pipe through a pipeline. When the drain valve 46 is opened, the water inside the vacuum furnace body 2 can be discharged for replacement.

[0028] Embodiment 2:

[0029] On the basis of Embodiment 1, in this embodiment, the blower 33 is made to work and air is sent into the interiors of a plurality of heat exchange tubes 34 through the dispersion box 35. At this time, the heat adsorbed by the plurality of heat exchange tubes 34 will be exchanged with the passing cold air. The heated air will pass through the air outlet header 31 and the air outlet pipe 32 and be guided to an external heating room for heating. At the same time, the plurality of heat exchange tubes 34 after heat exchange will be cooled. At this time, the surrounding water vapor will condense into water droplets when encountering the cold and fall downward again to the lower side inside the vacuum furnace body 2 for cyclic heating use, reducing heat loss and improving thermal efficiency.

[0030] The heat exchange component 3 includes an air outlet header 31, an air outlet pipe 32, a blower 33, heat exchange tubes 34, and a dispersion box 35. A plurality of heat exchange tubes 34 are fixedly connected to the upper side inside the vacuum furnace body 2. A plurality of heat exchange tubes 34 are fixedly connected, and the plurality of heat exchange tubes 34 have the same specifications. The center distance between the plurality of heat exchange tubes 34 is 35 cm, the outer diameter of the heat exchange tubes 34 is 19 cm, and the plurality of heat exchange tubes 34 are arranged at equal intervals. The plurality of heat exchange tubes 34 arranged at equal intervals can adsorb the heat in the water vapor on the upper side inside the vacuum furnace body 2. The joints of the plurality of heat exchange tubes 34 and the vacuum furnace body 2 are all sealed by welding. A dispersion box 35 is fixedly connected to the upper side of the right end face of the vacuum furnace body 2. The dispersion box 35 can disperse the air blown out by the blower 33 into the plurality of heat exchange tubes 34. A blower 33 is installed at the inlet of the right end face of the dispersion box 35. The blower 33 is connected to an external control panel through a wire. When the blower 33 is working, it can blow air into the dispersion box 35. A air outlet header 31 is fixedly connected to the upper side of the left end face of the vacuum furnace body 2. The air outlet header 31 can centrally guide the hot air delivered by the plurality of heat exchange tubes 34 into the air outlet pipe 32. An air outlet pipe 32 is fixedly connected to the outlet of the upper end face of the air outlet header 31. The outlet of the air outlet pipe 32 is connected to the heating inlet of an external heating room through a pipeline. The air outlet pipe 32 can guide the hot air into the external heating room.

[0031] Working principle: First, the staff opens valve 45 and pours the required amount of clean water into the vacuum furnace body 2 through the connecting pipe. Then, the connecting pipe is connected to an external vacuum pump through a pipeline. At this time, the external vacuum pump is started, and the vacuum pump works to evacuate the inside of the vacuum furnace body 2, so that the inside of the vacuum furnace body 2 is in a negative pressure state. During this process, the vacuum pressure gauge 44 will display the vacuum pressure inside the vacuum furnace body 2 in real time. When the vacuum pressure inside the vacuum furnace body 2 reaches the required value, the external vacuum pump and valve 45 can be closed respectively, so that the inside of the vacuum furnace body 2 always maintains a negative pressure state. Since the water inside the vacuum furnace body 2 is at a low level, and the valve 45 is at the top of the vacuum furnace body 2, and because the height of the vacuum furnace body 2 is 600 cm, the water inside the vacuum furnace body 2 will not be easily sucked into the valve 45 during the evacuation process of the inside of the vacuum furnace body 2; then the staff can make the electric heating tube 47 work according to the set temperature value through an external temperature controller. During this process, the working temperature of the electric heating tube 47 needs to be adjusted to 50 degrees, because when the water inside the vacuum furnace body 2 is in a negative pressure state and is heated to 50 degrees (the maximum temperature is controlled at 75 degrees), it begins to vaporize into steam and rise to the upper side inside the vacuum furnace body 2, so that multiple heat exchange tubes 34 can adsorb the heat in the surrounding water vapor. When the thermometer 42 shows that the water temperature inside the vacuum furnace body 2 is 50 degrees, the blower 33 can be started, and the blower 33 works to send air into the dispersion box 35. The dispersion box 35 will disperse the blown air into multiple heat exchange tubes 34. At this time, the heat adsorbed by the multiple heat exchange tubes 34 will exchange heat with the passing cold air. The heated air will pass through the air outlet header 31 and be centrally guided to the air outlet pipe 32, and finally be guided to the external heating room through the air outlet pipe 32 for heating. At the same time, the multiple heat exchange tubes 34 after heat exchange will cool down. At this time, a part of the surrounding water vapor will condense into water droplets and fall down again to the lower side inside the vacuum furnace body 2 for cyclic heating use, so as to save the use amount of clean water in the vacuum furnace body 2.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum heating furnace, comprising a positioning substrate (1) and a vacuum furnace body (2), characterized in that: A positioning base plate (1) is fixedly connected to the bottom of the vacuum furnace body (2); a heating component (4) is arranged on the lower side of the interior of the vacuum furnace body (2), and the heating component (4) is used to heat water inside the vacuum furnace body (2); a heat exchange component (3) is arranged on the upper side of the interior of the vacuum furnace body (2), and the heat exchange component (3) is used to absorb heat from water vapor inside the vacuum furnace body (2).

2. A vacuum heating furnace according to claim 1, characterized in that: The heating assembly (4) comprises an electrode-type liquid level gauge (43), a vacuum pressure gauge (44), a valve (45), an electric heating tube (47) and a fixed plugging plate (48); the electrode-type liquid level gauge (43) is installed on the right side of the upper end face of the vacuum furnace body (2); the vacuum pressure gauge (44) is installed on the front side of the upper end face of the vacuum furnace body (2); the valve (45) is installed on the right side of the upper end face of the vacuum furnace body (2); the fixed plugging plate (48) is installed on the lower side of the front end face of the vacuum furnace body (2); and the electric heating tube (47) is fixedly connected to the rear end of the fixed plugging plate (48).

3. A vacuum heating furnace according to claim 1, characterized in that: The heat exchange assembly (3) comprises an air outlet header (31), an air outlet pipe (32), a blower (33), a heat exchange pipe (34) and a dispersion box (35); a plurality of heat exchange pipes (34) are fixedly connected to the upper side of the interior of the vacuum furnace body (2); a dispersion box (35) is fixedly connected to the upper side of the right end surface of the vacuum furnace body (2); a blower (33) is installed at the inlet of the right end surface of the dispersion box (35); an air outlet header (31) is fixedly connected to the upper side of the left end surface of the vacuum furnace body (2); and an air outlet pipe (32) is fixedly connected to the outlet of the upper end surface of the air outlet header (31).

4. A vacuum heating furnace according to claim 3, characterized in that: A plurality of heat exchange tubes (34) are fixedly connected, and the plurality of heat exchange tubes (34) have the same specifications. The center spacing between the plurality of heat exchange tubes (34) is 35 cm. The outer diameter of the heat exchange tube (34) is 19 cm. The plurality of heat exchange tubes (34) are arranged at equal distances.

5. A vacuum heating furnace according to claim 1, characterized in that: A liquid level observation window (41) is installed on the right side of the front end surface of the vacuum furnace body (2), and the center height of the liquid level observation window (41) is 240 cm. A temperature gauge (42) is installed on the left side of the front end surface of the vacuum furnace body (2). The left-right width and the front-back width of the vacuum furnace body (2) are both 300 cm. The vertical height of the vacuum furnace body (2) is 600 cm.

6. A vacuum heating furnace according to claim 2, characterized in that: A sealing ring (481) is provided on the rear end surface of the fixed plugging plate (48); the fixed plugging plate (48) is a detachable structure; and the electric heating tube (47) is connected to an external temperature controller via a wire.

7. The vacuum heating furnace according to claim 1, characterized in that: A drainage valve (46) is installed on the lower side of the right end surface of the vacuum furnace body (2), and the outlet of the drainage valve (46) is connected to the inlet of the external drainage pipeline through a pipeline.

Images