A gas-fired high-efficiency energy-saving mold temperature controller

Abstract

This utility model relates to the technical field of gas heating equipment, specifically a gas-fired high-efficiency and energy-saving mold temperature controller. It includes a mold temperature controller body with a combustion chamber. A heat transfer oil heating coil is fixedly installed inside the combustion chamber. The heat transfer oil heating coil has an oil outlet pipe and an oil inlet pipe. An oil pump is installed on the oil inlet pipe. Several gas industrial burners are fixedly installed on one side below the combustion chamber. These burners are arranged symmetrically at the four corners of the combustion chamber. The central axis of each burner forms a preset angle with the side wall of the combustion chamber, and the geometric center lines of the nozzles of the four corner burners are tangent to the same imaginary tangent circle on the cross-section of the combustion chamber. A flue gas duct is installed on one side of the combustion chamber, and a flue gas heat exchanger is installed on one side of the flue gas duct. A flue gas outlet pipe is installed on one side of the flue gas heat exchanger. This design achieves high-efficiency combustion and energy saving.

Description

Technical Field

[0001] This utility model relates to the field of gas heating equipment technology, and more specifically, to a gas-fired high-efficiency and energy-saving mold temperature controller. Background Technology

[0002] A gas-fired mold temperature controller is an industrial device that uses the heat generated by the combustion of gas to heat a heat transfer medium (such as thermal oil or water), and then transfers the heat to the mold or other equipment requiring temperature control to achieve precise temperature control. It is particularly suitable for applications requiring rapid heating, uniform temperature, and cost-effectiveness, such as plastic injection molding and rubber vulcanization processes. Compared to electric heating methods, gas-fired mold temperature controllers can significantly reduce operating costs under certain conditions.

[0003] For example, a Chinese patent disclosure describes a gas-fired mold temperature controller (application number CN201720008509.X), which includes a hot kerosene circulation mechanism, a gas heating mechanism, and an oil inlet / outlet temperature difference control device. The hot kerosene circulation mechanism includes an oil inlet pipe, an oil return pipe, an oil delivery pipe, an oil outlet pipe, a heat transfer oil heating coil, an oil injection valve, an oil return valve, a heat transfer oil inlet valve, an oil outlet valve, a vapor-liquid phase separator, an expansion tank, and a circulating oil pump. The gas heating mechanism includes a combustion chamber, a gas industrial burner, and a gas control solenoid valve. The heat transfer oil heating coil is installed in the combustion chamber. The oil inlet / outlet temperature difference control device includes an oil return electronic thermometer, an oil outlet electronic thermometer, and a PID control unit. The PID control unit controls the gas control solenoid valve based on the difference between the oil return temperature and the oil outlet temperature detected by the oil return and outlet electronic thermometers. By controlling the combustion heating of the gas industrial burner through the oil outlet and return temperature difference, the heat transfer oil heating coil in the combustion chamber is heated, resulting in high efficiency and energy saving.

[0004] However, in the above-mentioned technical solutions, traditional gas-fired mold temperature controllers usually adopt a single burner or direct injection combustion structure, which results in uneven mixing of gas and air and low combustion efficiency. This is mainly manifested in the possibility of incomplete combustion, which may lead to some gas not being completely burned or excessive flue gas being generated, which carries away heat. These factors not only lead to low energy utilization and increased production costs, but also limit the heating speed and temperature control accuracy of the mold temperature controller, making it difficult to meet the requirements of high efficiency and energy saving. Utility Model Content

[0005] The main objective of this invention is to provide a gas-fired, high-efficiency, and energy-saving mold temperature controller. This invention effectively solves the problem in the background art where traditional gas-fired mold temperature controllers typically employ a single burner or direct injection combustion structure, resulting in uneven mixing of gas and air and low combustion efficiency. This is mainly manifested in incomplete combustion, leading to some gas not being completely burned or excessive flue gas carrying away heat. These factors not only result in low energy utilization and increased production costs, but also limit the heating speed and temperature control accuracy of the mold temperature controller, making it difficult to meet the requirements for high efficiency and energy saving.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a gas-fired high-efficiency energy-saving mold temperature controller, comprising a mold temperature controller body, a combustion chamber provided on the mold temperature controller body, a heat transfer oil heating coil fixedly installed in the combustion chamber, an oil outlet pipe and an oil inlet pipe provided on the heat transfer oil heating coil, an oil pump provided on the oil inlet pipe, several gas industrial burners fixedly installed on one side below the combustion chamber, the gas industrial burners being arranged symmetrically at the four corners of the combustion chamber, the central axis of each gas industrial burner forming a preset angle with the side wall of the combustion chamber, and the geometric center lines of the nozzles of the four corner gas industrial burners being tangent to the same imaginary tangent circle on the cross-section of the combustion chamber, a flue gas duct provided on one side above the combustion chamber, a flue gas heat exchanger provided on one side of the flue gas duct, and a flue gas outlet pipe provided on one side of the flue gas heat exchanger.

[0007] Preferably, the oil pump is fixedly mounted on the mold temperature controller body.

[0008] Preferably, the two sides of the flue are connected to the combustion chamber and the flue gas heat exchanger, respectively.

[0009] Preferably, the gas industrial burner includes a burner body, an air supply pipe and a gas supply pipe provided on the burner body, and a blower provided on the air supply pipe.

[0010] Preferably, a gas control solenoid valve is installed on the gas delivery pipe.

[0011] Preferably, a portion of the air delivery pipe is located in the flue gas heat exchanger.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) When this utility model is used, the gas is transported to the burner body through the gas supply pipe, and the air is transported to the burner body through the air supply pipe and the blower. During the air supply process, since part of the air supply pipe is located in the flue gas heat exchanger, the air will be heated by the flue gas heat exchanger when it passes through the flue gas heat exchanger, thereby preheating the air. By preheating the air, the ignition and combustion reaction of the fuel can be accelerated, so that the fuel can burn more completely, thereby improving the combustion efficiency. Then the air and gas are mixed in the burner body and burn out a high-temperature flame. Since the gas industrial burner adopts a four-corner tangent circle arrangement, the flame can form a rotating airflow in the combustion chamber, so that the mixed gas is evenly distributed in the combustion chamber. At the same time, a vortex will also be formed in the center of the combustion chamber, which promotes the mixing and combustion of gas and air. During combustion, the heat can be released more evenly, thereby improving the combustion efficiency, thus achieving high-efficiency combustion and saving energy and reducing consumption. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a gas-fired high-efficiency energy-saving mold temperature controller according to the present invention;

[0015] Figure 2 This is a schematic diagram of the internal structure of a gas-fired high-efficiency energy-saving mold temperature controller according to this utility model;

[0016] Figure 3 This is a schematic diagram of the gas industrial burner in a gas-fired high-efficiency energy-saving mold temperature controller according to this utility model.

[0017] In the diagram: 1. Mold temperature controller body; 2. Combustion chamber; 3. Heat transfer oil heating coil; 4. Oil outlet pipe; 5. Oil inlet pipe; 6. Oil pump; 7. Gas industrial burner; 701. Burner body; 702. Air supply pipe; 703. Gas supply pipe; 704. Blower; 705. Gas control solenoid valve; 8. Smoke guide pipe; 9. Flue gas heat exchanger; 10. Smoke outlet pipe. Detailed Implementation

[0018] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0019] like Figure 1 and Figure 2As shown, a gas-fired high-efficiency energy-saving mold temperature controller includes a mold temperature controller body 1, a combustion chamber 2 on the mold temperature controller body 1, a heat transfer oil heating coil 3 fixedly installed in the combustion chamber 2, an oil outlet pipe 4 and an oil inlet pipe 5 on the heat transfer oil heating coil 3, an oil pump 6 on the oil inlet pipe 5, and several gas industrial burners 7 fixedly installed on one side below the combustion chamber 2. The gas industrial burners 7 are arranged symmetrically at the four corners of the combustion chamber, and the central axis of each gas industrial burner 7 forms a preset angle with the side wall of the combustion chamber. The geometric center lines of the nozzles of the four corner gas industrial burners 7 are tangent to the same imaginary tangent circle on the cross-section of the combustion chamber 2. A flue gas duct 8 is provided on one side above the combustion chamber 2, a flue gas heat exchanger 9 is provided on one side of the flue gas duct 8, and a flue gas outlet pipe 10 is provided on one side of the flue gas heat exchanger 9.

[0020] like Figure 3 As shown, in another embodiment of the present invention, the gas industrial burner 7 includes a burner body 701, an air supply pipe 702 and a gas supply pipe 703 are provided on the burner body 701, and a blower 704 is provided on the air supply pipe 702.

[0021] A gas control solenoid valve 705 is installed on the gas transmission pipe 703.

[0022] When it is necessary to heat the interior of combustion chamber 2, gas is supplied to burner body 701 through gas supply pipe 703, and air is supplied to burner body 701 through air supply pipe 702 and blower 704. During the air supply process, since part of air supply pipe 702 is located in flue gas heat exchanger 9, the air is heated by flue gas heat exchanger 9 when it passes through the flue gas heat exchanger 9, thus preheating the air. By preheating the air, the ignition and combustion reaction of fuel can be accelerated, and the fuel can be burned more completely, thereby improving combustion efficiency. Subsequently, the air and gas are mixed in burner body 701 and combusted to produce a high-temperature flame, which heats the interior of combustion chamber 2.

[0023] The working principle of this gas-fired high-efficiency energy-saving mold temperature controller:

[0024] In operation, gas is first supplied to the burner body 701 via gas supply pipe 703, and simultaneously air is supplied to the burner body 701 via air supply pipe 702 and blower 704. During air supply, since part of air supply pipe 702 is located in flue gas heat exchanger 9, the air is preheated as it passes through the heat exchanger 9. The air and gas are then mixed in the burner body 701, producing a high-temperature flame. Because the industrial gas burner 7 uses a tangential arrangement, the flame forms a rotating airflow in the combustion chamber 2, ensuring the mixed gas is evenly distributed within the combustion chamber 2 for simultaneous combustion. A vortex is also formed in the center of combustion chamber 2, which promotes the mixing and combustion of gas and air, reduces the generation of unburned gas and flue gas, and allows heat to be released more evenly during combustion, thereby improving combustion efficiency. This rapidly heats the interior of combustion chamber 2, heating the heat transfer oil heating coil 3. The hot oil inside the heat transfer oil heating coil 3 is then transported to a designated location through the oil outlet pipe 4, and then cold oil is transported to the heat transfer oil heating coil 3 through the oil inlet pipe 5 and the oil pump 6 to complete the oil circulation. The smoke generated by combustion in combustion chamber 2 enters the flue gas heat exchanger 9 through the smoke guide pipe 8, and is discharged from the smoke outlet pipe 10 after heat exchange, making full use of the high-temperature flue gas in combustion chamber 2.

[0025] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A gas-fired high-efficiency energy-saving mold temperature controller, comprising a mold temperature controller body (1), characterized in that: The main body (1) of the mold temperature controller is provided with a combustion chamber (2), and a heat transfer oil heating coil (3) is fixedly installed in the combustion chamber (2). An oil outlet pipe (4) and an oil inlet pipe (5) are provided on the heat transfer oil heating coil (3). An oil pump (6) is provided on the oil inlet pipe (5). Several gas industrial burners (7) are fixedly installed on one side below the combustion chamber (2). The gas industrial burners (7) are arranged in a symmetrical manner at the four corners of the combustion chamber. The central axis of each gas industrial burner (7) forms a preset angle with the side wall of the combustion chamber. The geometric center lines of the nozzles of the four corner gas industrial burners (7) are tangent to the same imaginary tangent circle on the cross section of the combustion chamber (2). A flue gas pipe (8) is provided on one side above the combustion chamber (2). A flue gas heat exchanger (9) is provided on one side of the flue gas pipe (8). A flue gas outlet pipe (10) is provided on one side of the flue gas heat exchanger (9).

2. The gas-fired high-efficiency energy-saving mold temperature controller according to claim 1, characterized in that: The oil pump (6) is fixedly installed on the body (1) of the mold temperature controller.

3. The gas-fired high-efficiency energy-saving mold temperature controller according to claim 2, characterized in that: The flue pipe (8) is connected to the combustion chamber (2) and the flue gas heat exchanger (9) on both sides respectively.

4. The gas-fired high-efficiency energy-saving mold temperature controller according to claim 3, characterized in that: The gas industrial burner (7) includes a burner body (701), an air supply pipe (702) and a gas supply pipe (703) are provided on the burner body (701), and a blower (704) is provided on the air supply pipe (702).

5. The gas-fired high-efficiency energy-saving mold temperature controller according to claim 4, characterized in that: A gas control solenoid valve (705) is installed on the gas delivery pipe (703).

6. A gas-fired high-efficiency energy-saving mold temperature controller according to claim 5, characterized in that: A portion of the air delivery pipe (702) is located in the flue gas heat exchanger (9).

Images