CN206875713U - A high-efficiency gas heater - Google Patents

Abstract

An efficient gas heater, includes the heating member, its characterized in that: the heating body comprises a plurality of groups of heating rods, a metal pipeline for ventilation and a cast aluminum heating body; the metal pipelines are tightly wound on a plurality of groups of heating rods; the cast aluminum heating body pours a plurality of groups of heating rods tightly wound by the metal pipeline into a whole with the metal pipeline. The gas circulates through the metal pipeline, the metal pipeline is tightly wound on the heating rod, and the heating rod is isolated from the airflow channel, so that the heating rod is prevented from being affected with damp, leaked with electricity or damaged; cast aluminium heating body and metal pipeline pouring into an organic whole the heating rod, strengthened whole gas heater's intensity, alleviate whole weight for heat conduction efficiency increases greatly.

Description

A high-efficiency gas heater

technical field

The utility model relates to the technical field of gas heating equipment, in particular to an efficient gas heater.

Background technique

Gas electric heaters are widely used. The working process of traditional gas heaters is usually as follows: gas enters the airflow channel from the inlet, the heating element is set in the airflow channel, the gas is heated by the heating element, the temperature rises, and then it goes out from the outlet. In traditional gas heaters, because the gas contains moisture, the heating element will be corroded and damaged, and it is also likely to cause the risk of moisture leakage; moreover, the heating element is not isolated from the air flow channel, which also makes the air flow channel have a lower pressure resistance.

There is also an improved gas heater that separates the heating element from the gas flow channel on the market, but because the heating element is separated from the gas, the heating efficiency is relatively low, and it is heavy and inconvenient to use. At the same time, the connection of the heating element, the heat conductor and the airflow channel of this improved gas heater is relatively loose and easy to be damaged, so there is still a lot of room for improvement.

Utility model content

The purpose of the utility model is to overcome the problems of low heating efficiency, bulky and easy to be corroded of existing heaters, and provide a high-efficiency gas heater.

In order to achieve the above object, the utility model is achieved through the following technical solutions: a high-efficiency gas heater, including a heating body, characterized in that: the heating body includes several groups of heating rods, metal pipes for ventilation and cast An aluminum heating body; the metal pipes are tightly wound on several groups of heating rods; the cast aluminum heating body integrates several groups of heating rods tightly wound by the metal pipes and the metal pipes into one.

In the above scheme, the gas circulates through metal pipes, and the heating rod is isolated from the air flow channel to avoid leakage or damage to the heating rod due to moisture; the metal pipe is tightly wound on the heating rod to help reduce volume and improve heating efficiency and reduce heat loss; cast aluminum The heating body integrates the heating rod and the metal pipe, which not only enhances the strength of the entire gas heater, but also conducts heat through aluminum, which greatly improves the heat conduction efficiency.

The tight winding of the metal pipes on several groups of heating rods means that the metal pipes are spirally wound around the heating rods without gaps and surround several groups of heating rods. When the heating rod is working, it can efficiently conduct heat to the gas in the metal pipe with lower loss.

The inside of the cast aluminum is provided with a hole for installing a temperature control sensor, and the hole is also located in the middle of several groups of heating rods. The hole of the temperature control sensor is located in the middle of several groups of heating rods, so that the temperature sensing is more accurate, which is beneficial to the precise control of the temperature of the gas.

The cast aluminum heating body is cast aluminum cast through a mold at high temperature and high pressure. Such a technical solution can increase the impact resistance and impact resistance of the gas heater, increase the thermal conductivity of the cast aluminum heating body, and improve the heating efficiency.

The heating rods are in a "U" shape, and several groups of heating rods are superimposed or cross-arranged together and then connected to the external controller signal; or the heating rods are in a "U" structure, and several groups of heating rods are superimposed or cross-arranged together Afterwards, it is directly connected to the external power supply through wires.

The heating rod includes a heating wire in the middle, a thermally conductive filling insulation layer wrapped around the heating wire, and an outermost metal layer. During the thermal expansion and contraction process of heating, the heating wire is under the protection of the metal layer and is not easy to be damaged.

A further solution also includes a thermometer; the thermometer is arranged at the gas outlet of the metal pipe for real-time display of the temperature of the gas at the gas outlet. According to the temperature gauge, you can know the gas temperature in real time and make corresponding adjustments as needed.

The preferred solution also includes a protective shell; the protective shell is an aluminum alloy shell wrapped outside the thermal insulation layer.

It also includes a temperature protector arranged on the surface of the cast aluminum heating body, and the temperature protector is used for sensing the surface temperature of the cast aluminum heating body and connecting the signal to an external controller to prevent danger caused by excessive temperature.

The metal pipe body is made of stainless steel; it is more resistant to moisture and corrosion.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1. The metal pipe is tightly wound on the heating rod, and is melted into one body through the cast aluminum heating body. The volume is compact and the heat conduction efficiency is very high. It can be heated to the set temperature in the shortest time;

2. The heating rod and the metal pipe are made into a whole through cast aluminum, which has good impact resistance and impact resistance, and is not easy to be damaged;

3. The heating rod is completely isolated from the air flow channel, and does not contact with the moisture of the gas, so as to prevent the heating rod from being damp, electric leakage or damage, and also makes the metal pipe have a higher pressure resistance, and the temperature of the gas outlet can reach 120-300 °C;

4. A thermometer for real-time display of temperature is set at the gas outlet, which can display the temperature of the gas in real time, which is convenient for use and control.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of heating body;

Explanation of reference signs: 1. heating body; 1.1, heating rod; 1.2, metal pipe; 1.21, metal pipe inlet; 1.22, metal pipe outlet; 1.3, cast aluminum heating body; 2, temperature control sensor; 3, thermal insulation Layer; 4. Thermometer; 5. Protective shell; 6. Temperature protector; 7. External controller; 8. Electric plug.

detailed description

The utility model is described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1

As shown in Figure 1 and Figure 2, a high-efficiency gas heater includes a heating body 1. The heating body 1 includes two sets of "U" structures, heating rods 1.1 arranged side by side, metal pipes 1.2 for ventilation and cast aluminum heating The body 1.3; the metal pipe 1.2 is tightly wound on the two sets of heating rods 1.1 in a spiral shape without gaps; the cast aluminum heating body 1.3 integrates the two sets of heating rods 1.1 tightly wound by the metal pipe 1.2 and the metal pipe 1.2. The two sets of heating rods 1.1 are connected to the external controller 7 with signals, and the external controller 7 can be provided with a temperature adjustment input, and the power of the heating rods can be adjusted as required to realize temperature adjustment, and the existing controller can be used.

There is a hole for installing the temperature control sensor 2 inside the cast aluminum heating body 1.3, and the hole is located in the middle of the heating rod 1.1. This structure makes the temperature sensing more accurate, which is beneficial to control the temperature of the gas. Controller signal connections.

The cast aluminum heating body 1.3 is cast aluminum cast at high temperature and high pressure through a mold, which is conducive to increasing the impact resistance and impact resistance of the gas heater, and the compactness and thermal conductivity of cast aluminum cast at high temperature and high pressure Large, can improve heating efficiency.

The heating rod 1.1 includes a heating wire in the middle, a thermally conductive filling insulating layer and a metal layer wrapped around the heating wire. The thermally conductive filling insulating layer is a magnesium sulfate powder layer, and the metal layer is a stainless steel layer. During the thermal expansion and contraction process of heating, the heating wire is under the protection of stainless steel and is not easy to be damaged.

The gas heater also includes a thermometer 4; the thermometer 4 is arranged at the gas outlet of the metal pipe 1.2, and is used to display the temperature of the gas at the gas outlet in real time.

Preferably, the gas heater also includes a protective shell 5 and a thermal insulation layer 3; the thermal insulation layer 3 is wrapped outside the heating body 1; the protective shell 5 is an aluminum alloy shell, wrapped outside the thermal insulation layer 3.

In a further preferred solution, the gas heater also includes a temperature protector 6 arranged on the surface of the cast aluminum heating body 1.3, the temperature protector 6 is used to sense the surface temperature of the cast aluminum heating body 1.3 and the signal is connected to the external controller 7 to prevent temperature Danger from overheating. An external device can output an alarm signal.

The metal pipe 1.2 is made of corrosion-resistant and moisture-resistant materials such as stainless steel, which is more resistant to moisture and corrosion.

The gas heater also has ancillary devices such as an electric plug 8 for connecting to an external power supply.

The electric plug 8 is connected to the power supply, and the signal of the external thermostat 7 is connected to and controls the heating rod 1.1 and the temperature protector 6 . After the power is turned on, the external thermostat 7 is used to control the power of the heating rod 1.1 and to turn it on and off; when the temperature of the heating body 1 is too high, the temperature protector 6 feeds back a signal to the external thermostat 7, thereby controlling the heating rod 1.1 The power level and startup shutdown, so as to achieve the role of protection.

The production process of the heating body 1 is as follows: firstly, the sand-filled metal pipe 1.2 is tightly wound on two sets of heating rods 1.1, and then placed in a special mold, and molten high-quality cast aluminum is injected under high temperature and high pressure to make the metal pipe 1.2 , the heating rod 1.1 and the cast aluminum heating body 1.3 become a whole and are molded according to the mould. Therefore, the heating body 1 is a whole, has good impact resistance and impact resistance, and is not easy to be damaged.

The production process of the heating body comprising more groups of heating rods can be deduced by analogy.

During work, at first the air source (not shown) is connected and sealed with the metal pipe inlet 1.21, and the air pipe (not shown) of the gas equipment is connected and sealed with the metal pipe outlet 1.22; the electric plug 8 is connected to the power supply; through the external controller 7 Set the required temperature (equipped with an input panel or knob), the external controller controls the power of the heating rod 1.1 and starts and closes according to the setting, and the temperature control sensor feeds data back to the external controller until the set temperature is reached; the temperature gauge 4 The reading reflects the current temperature in real time, which is convenient for judgment and use. When the temperature of the heating body 1 is too high, the temperature protector 6 feeds back a signal to the external controller 7, thereby controlling the heating rod 1.1 to be turned on and off and/or to alarm, so as to achieve the protection function. The structure of the whole gas heater is ingenious and reliable, light, convenient and easy to carry; the temperature rises quickly, and the temperature can reach above 150°; it can work normally without gas flow, and is not afraid of dry burning; the overall strength is high, and it can withstand large working pressure .

Example 2

The difference between this embodiment and Embodiment 1 is that the outer surface of the cast aluminum heating body 1.3 is provided with a hole for installing the temperature control sensor 2, the metal pipe body 1.2 is made of copper, and the protective shell 5 is made of non-metallic shell such as plastic body. Other structures are with embodiment 1.

Example 3

The only difference between this embodiment and embodiment 1 is that the heating rods 1.1 are two sets of cross-arranged helical heating rods. Other structures are with embodiment 1.

Example 4

The only difference between this embodiment and Embodiment 1 is that the heating rod 1.1 has a "U" structure, and there are two groups arranged in a cross, the metal pipes 1.2 are spirally wound on the two groups of heating rods 1.1, and there are tiny Clearance. Other structures are with embodiment 1.

Example 5

A high-efficiency gas heater, including a heating body, the heating body includes a set of heating rods, metal pipes for ventilation and a cast aluminum heating body; the metal pipes are tightly wound on several groups of heating rods; the cast aluminum heating body is covered with metal A set of heating rods with tightly wound pipes is cast as one piece with the metal pipes. The heating rod has a "U" structure, and the metal pipe is spirally wound around the heating rod without gaps, enclosing the heating rod. The heating rod is directly connected with the electric plug 8 through a wire. When the electric plug 8 is connected with the power supply, the gas can be heated to work; after the work is finished, the electric plug 8 can be directly unplugged.

Example 6

The only difference between this embodiment and Embodiment 5 is that it also includes a thermometer 4 arranged at the gas outlet of the metal pipe 1.2, which is used to display the temperature of the gas at the gas outlet in real time, so that it is convenient to check the temperature.

The above-mentioned embodiment is a preferred implementation mode of the present utility model, but the implementation mode of the present utility model is not limited by the above-mentioned embodiment, and any other changes, modifications and substitutions made without departing from the spirit and principle of the present utility model , combination, and simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present utility model.

Claims (10)

1. a kind of efficient gas heater, including calandria, it is characterised in that：The calandria include some groups of heating rods, Metallic conduit and cast aluminium calandria for ventilation；The metallic conduit is wound around on some groups of heating rods；The cast aluminium Calandria by some groups of heating rods that metallic conduit is closely wound and metallic conduit cast be integrally formed.

A kind of 2. efficient gas heater according to claim 1, it is characterised in that：Set inside the cast aluminium calandria There is the hole for installing temperaturecontrol sensor, the hole is simultaneously positioned at the centre of some groups of heating rods.

A kind of 3. efficient gas heater according to claim 1, it is characterised in that：The metallic conduit is closely wound Refer on some groups of heating rods：The metallic conduit in gapless spiral wound on some groups of heating rods, by some groups Heating rod is surrounded.

A kind of 4. efficient gas heater according to claim 1, it is characterised in that：The cast aluminium calandria is to pass through The cast aluminium that mould forms in HTHP casting.

A kind of 5. efficient gas heater according to claim 1, it is characterised in that：The heating rod is " U " structure, It is connected after some groups of heating rod superpositions or cross arrangement together with external controller signal；Or the heating rod is " U " Structure, some groups of heating rod superpositions or cross arrangement are directly connected by wire with external power supply afterwards together.

A kind of 6. efficient gas heater according to claim 1, it is characterised in that：The heating rod includes middle Heater strip, the conductive filler insulating barrier being wrapped in outside heater strip and outermost metal level.

A kind of 7. efficient gas heater according to any claim in claim 1 to 6, it is characterised in that：Also Including thermometer；The thermometer is located at the gas outlet of metallic conduit, the temperature for real-time display outlet gas.

A kind of 8. efficient gas heater according to any claim in claim 1 to 6, it is characterised in that：Also Including protection shell and heat insulation layer；The heat insulation layer is wrapped in outside calandria；The protection shell is Al alloy shell Body, it is wrapped in outside heat insulation layer.

A kind of 9. efficient gas heater according to any claim in claim 1 to 6, it is characterised in that：Also Temperature protector including being arranged on cast aluminium calandria surface, the temperature protector are used for the surface temperature for sensing cast aluminium calandria Spend and signal connects external controller.

A kind of 10. efficient gas heater according to claim 1 or 6, it is characterised in that：The metallic conduit uses Stainless steel is made.