Embedded gas water heater

Abstract

The application provides an embedded gas water heater and relates to the field of gas water heaters, which comprises a furnace outer cylinder, a gas valve, a fully premixed burner, a water pump and a main heat exchanger; the inner side of the front and rear ends of the furnace outer cylinder is respectively provided with a group of front partition plates and two groups of rear partition plates, the lower end of the conical cylinder is provided with an air inlet and is inserted with an exhaust cylinder; the main electric control box, the gas valve and the water pump are respectively arranged on the inner side of the rear end of the furnace outer cylinder, the fully premixed burner is arranged on the inner side of the conical cylinder, and the outer end of the fully premixed burner is provided with a fan; the main heat exchanger is of a volute structure, the outer end is connected with a water inlet pipe, the middle is connected with a water outlet pipe, and the water inlet pipe and the water outlet pipe are respectively connected to a communicating vessel through the rear partition plates. The gas exchange and the fan are installed outdoors in the embedded wall hole, the furnace outer cylinder is installed in the wall, the structure is compact, the indoor noise is small, the problems of large combustion noise and fan noise are solved, and the problems of large combustion chamber space and indoor space occupation are solved.

Description

Technical Field

[0001] This invention relates to the field of gas water heater technology, and particularly to embedded gas water heaters. Background Technology

[0002] With economic development and social progress, household gas water heaters have become widespread, meeting the domestic hot water and heating needs of many families. Due to limitations in the combustion heat exchange structure, most domestic hot water systems are currently installed indoors. The air required for combustion and the exhaust gas after combustion need to be led outdoors through a dedicated flue. The length of the pipe is limited, which poses a safety risk of gas leakage. In addition, the installation location of the furnace body has high requirements for the load-bearing capacity of the wall. Furthermore, the combustion noise and fan noise are loud, requiring the use of thick sound insulation cotton for noise reduction. Moreover, the combustion chamber space is large due to the distance required for the combustion flame, resulting in a large volume that occupies indoor space. Summary of the Invention

[0003] To address the problems in the background art, the present invention provides an embedded gas water heater, which uses a wall-mounted method to install the ventilation and fan outdoors, while the outer cylinder of the furnace is installed in the wall, resulting in a compact structure and low indoor noise.

[0004] The embedded gas water heater provided by this invention specifically includes: an outer cylinder of the boiler body, a control panel, a main electrical control box, a gas valve, a fully premixed burner, a gas pipe, a water pump, a connector, and a main heat exchanger; The front end of the outer cylinder of the furnace body is fitted with a conical cylinder, and the rear end of the outer cylinder of the furnace body is fitted with a control panel. The inner front and rear ends of the outer cylinder of the furnace are respectively provided with a set of front partitions and two sets of rear partitions. The lower end of the conical cylinder is provided with an air inlet and an exhaust duct is inserted therein, and the rear end of the exhaust duct passes through the front partition. The main electrical control box, gas valve, and water pump are respectively placed inside the rear end of the outer cylinder of the furnace and fixed on the rear partition. The fully premixed burner is placed inside the conical cylinder and fixed on the front partition. A fan is installed at the outer end of the fully premixed burner. The gas valve and the fully premixed burner are connected by a gas pipe. The gas pipe passes between the front partition and the rear partition. A fan wiring harness tube also passes between the front partition and the rear partition. The main heat exchanger has a volute structure with an inlet pipe connected to the outer end and an outlet pipe connected in the middle. The main heat exchanger is placed between the front and rear partitions, and the inlet and outlet pipes pass through the rear partition and are connected to the communicating vessel. An outlet water temperature probe is installed at the connection between the communicating vessel and the outlet pipe. The communicating vessel is also connected to the water pump.

[0005] Furthermore, the outer cylinder of the furnace is inserted into a wall hole in a non-load-bearing wall, with the conical cylinder placed outdoors and the control panel placed indoors. The control panel is electrically connected to the main electrical control box.

[0006] Furthermore, the main heat exchanger is also provided with a heat insulation felt on the outside, and the gas pipe and fan wiring harness protective pipe are placed on the outside of the heat insulation felt.

[0007] Furthermore, the flame outlet pipe of the fully premixed burner passes through the front diaphragm and is placed in the combustion chamber in the middle of the main heat exchanger. A gas nozzle is installed on the inner side of the fully premixed burner, and a flame stabilizing plate is provided on the inner side of the flame outlet pipe of the fully premixed burner, with the flame stabilizing plate located at the end of the gas nozzle.

[0008] Furthermore, an ignition and flame monitoring electrode and a furnace pressure sampling tube are interspersed in the middle of the rear partition plate, and the front end of the ignition and flame monitoring electrode is placed in the middle of the volute of the main heat exchanger and is opposite to the flame outlet tube of the fully premixed burner.

[0009] Furthermore, a flue gas pressure sampling pipe is inserted into the lower end of the rear partition, and the front end of the flue gas pressure sampling pipe is directly opposite the lower outer side of the main heat exchanger and the heat insulation felt.

[0010] The embedded gas water heater provided by this invention has the following beneficial effects: This invention uses an embedded wall hole to install the ventilation and fan outdoors. The furnace body is cylindrical and installed in the wall, while the control panel and piping are installed indoors. The structure is compact, the indoor noise is low, and maintenance is simple. It also uses a fully premixed burner, which performs low-NOx combustion in the combustion chamber formed by the vortex heat exchange center. The flame center radiates heat exchange, and the high-temperature exhaust gas is in long-term contact with the main heat exchanger for conduction heat exchange. The air inlet and exhaust port of the fan are both located outdoors, which reduces the noise of the fan and combustion into the room. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0012] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0013] In the attached diagram: Figure 1 A schematic diagram of the overall structure of the present invention is shown; Figure 2 The present invention is shown Figure 1 A schematic diagram of the structure of the outer cylinder and the conical cylinder after vertical sectioning at one end of the furnace body; Figure 3 The present invention is shown Figure 2 Schematic diagram of the front structure; Figure 4 The present invention is shown Figure 2 A schematic diagram of the side-mounted structure of the outer cylinder, conical cylinder, control panel, and insulation felt of the furnace after removal; Figure 5 A schematic diagram of the main heat exchanger in this invention is shown; Figure 6 The present invention is shown Figure 1 A schematic diagram of the structure after the furnace outer cylinder, conical cylinder, and the other end of the main heat exchanger are vertically cut apart after the control panel is disassembled; Figure 7 The present invention is shown Figure 6 Schematic diagram of the right-side tilting structure; Figure 8 The present invention is shown Figure 1 A schematic diagram of the structure of the furnace body inserted into a wall hole in a non-load-bearing wall.

[0014] List of reference numerals 1. Furnace outer shell; 101. Front baffle; 102. Rear baffle; 2. Conical cylinder; 201. Air inlet; 3. Exhaust duct; 4. Control panel; 5. Main electrical control box; 6. Gas valve; 7. Fully premixed burner; 701. Fan; 702. Gas nozzle; 703. Flame stabilizer; 8. Gas pipe; 9. Fan wiring harness cover; 10. Water pump; 11. Connecting device; 12. Main heat exchanger; 1201. Water inlet pipe; 1202. Water outlet pipe; 13. Insulation felt; 14. Ignition and flame monitoring electrode; 15. Furnace pressure sampling pipe; 16. Flue pressure sampling pipe. Detailed Implementation

[0015] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0016] Example 1: Please refer to Figures 1 to 8 : This invention proposes an embedded gas water heater, comprising: an outer cylinder of the furnace body 1, a control panel 4, a main electrical control box 5, a gas valve 6, a fully premixed burner 7, a gas pipe 8, a water pump 10, a connector 11, and a main heat exchanger 12. The front end of the outer cylinder 1 of the furnace body is fitted with a conical cylinder 2, and the rear end of the outer cylinder 1 of the furnace body is fitted with a control panel 4. The inner front and rear ends of the outer cylinder 1 of the furnace are respectively provided with a set of front partitions 101 and two sets of rear partitions 102. The lower end of the conical cylinder 2 is provided with an air inlet 201 and an exhaust duct 3 is inserted therein, and the rear end of the exhaust duct 3 passes through the front partition 101. The main electrical control box 5, gas valve 6, and water pump 10 are respectively placed inside the rear end of the outer cylinder 1 of the furnace body and fixed on the rear partition 102. The fully premixed burner 7 is placed inside the conical cylinder 2 and fixed on the front partition 101. A fan 701 is installed at the outer end of the fully premixed burner 7. The gas valve 6 and the fully premixed burner 7 are connected by a gas pipe 8. The gas pipe 8 passes between the front partition 101 and the rear partition 102. A fan wiring harness tube 9 also passes between the front partition 101 and the rear partition 102. The main heat exchanger 12 has a volute structure, with an inlet pipe 1201 connected to the outer end and an outlet pipe 1202 connected in the middle. The main heat exchanger 12 is located between the front partition 101 and the rear partition 102. The inlet pipe 1201 and the outlet pipe 1202 pass through the rear partition 102 and are connected to the communicating vessel 11. An outlet water temperature probe is installed at the connection between the communicating vessel 11 and the outlet pipe 1202. The communicating vessel 11 is also connected to the water pump 10.

[0017] In embodiments of the present invention, such as Figure 8 As shown, the outer cylinder 1 of the furnace is inserted into a wall hole in a non-load-bearing wall, and the conical cylinder 2 is placed outdoors, while the control panel 4 is placed indoors. The control panel 4 is electrically connected to the main electrical control box 5, and the main electrical control box 5 is electrically connected to the gas valve 6, the fan 701, the water pump 10, the outlet water temperature probe, and the ignition and flame monitoring electrode 14. The ventilation and fan 701 are installed outdoors by embedding them into the wall hole, the outer cylinder 1 of the furnace is installed in the wall, and the control panel 4 and the connecting pipes are installed indoors. The structure is compact, the indoor noise is low, and maintenance is simple.

[0018] In embodiments of the present invention, such as Figure 2 and Figure 3 As shown, a heat insulation felt 13 is also provided on the outside of the main heat exchanger 12, and the gas pipe 8 and the fan wiring harness protective pipe 9 are placed on the outside of the heat insulation felt 13. The heat insulation felt 13 prevents the heat after combustion in the combustion chamber from dissipating outward, and at the same time protects the gas pipe 8 and the fan wiring harness protective pipe 9.

[0019] In embodiments of the present invention, such as Figure 6 and Figure 7 As shown, the flame outlet pipe of the fully premixed burner 7 passes through the front partition 101 and is placed in the combustion chamber in the middle of the main heat exchanger 12. A gas nozzle 702 is installed on the inner side of the fully premixed burner 7. A flame stabilizing plate 703 is provided on the inner side of the flame outlet pipe of the fully premixed burner 7, and the flame stabilizing plate 703 is placed at the end of the gas nozzle 702. The fully premixed burner 7 is used to perform low-NOx combustion in the combustion chamber formed by the vortex heat exchange center. The flame center radiates heat exchange, and the high-temperature exhaust gas contacts the main heat exchanger 12 for a long time for conduction heat exchange.

[0020] In embodiments of the present invention, such as Figure 3 , Figure 6 and Figure 7 As shown, an ignition and flame monitoring electrode 14 and a furnace pressure sampling tube 15 are also inserted in the middle of the rear partition 102. The front end of the ignition and flame monitoring electrode 14 is placed in the middle of the volute of the main heat exchanger 12 and is opposite to the flame outlet tube of the fully premixed burner 7. A flue gas pressure sampling tube 16 is also inserted at the lower end of the rear partition 102, and the front end of the flue gas pressure sampling tube 16 is directly opposite the lower outer side of the main heat exchanger 12 and the heat insulation felt 13.

[0021] The specific usage and function of this embodiment: The present invention uses an embedded wall hole to install the ventilation and fan 701 outdoors. The outer cylinder 1 of the furnace is cylindrical and installed in the wall. The control panel 4 and the connecting pipe are installed indoors. The structure is compact, the indoor noise is low, and the maintenance is simple. It also uses a fully premixed burner 7, which performs low-NOx combustion in the combustion chamber formed by the vortex heat exchange center. The flame center radiates heat exchange, and the high-temperature exhaust gas is in contact with the main heat exchanger 12 for a long time for conduction heat exchange. The air inlet and exhaust port of the fan 701 are both located outdoors, which reduces the noise of the fan 701 and the combustion noise entering the room.

[0022] The following points should be noted in this article: 1. The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention; other structures can refer to general designs.

[0023] 2. Where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other to obtain new embodiments.

[0024] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. Built-in gas water heaters, including: Furnace outer shell (1), control panel (4), main electrical control box (5), gas valve (6), fully premixed burner (7), gas pipe (8), water pump (10), connector (11) and main heat exchanger (12); The front end of the outer cylinder (1) of the furnace body is fitted with a conical cylinder (2), and the rear end of the outer cylinder (1) of the furnace body is fitted with a control panel (4). The furnace outer cylinder (1) is characterized in that a set of front partitions (101) and two sets of rear partitions (102) are respectively provided on the front and rear ends of the inner side of the outer cylinder (1). The lower end of the conical cylinder (2) is provided with an air inlet (201) and an exhaust pipe (3) is inserted therein, and the rear end of the exhaust pipe (3) passes through the front partition (101). The main electrical control box (5), gas valve (6), and water pump (10) are respectively placed inside the rear end of the outer cylinder (1) of the furnace body and fixed on the rear partition (102). The fully premixed burner (7) is placed inside the conical cylinder (2) and fixed on the front partition (101). A fan (701) is installed at the outer end of the fully premixed burner (7). The gas valve (6) and the fully premixed burner (7) are connected by a gas pipe (8). The gas pipe (8) is inserted between the front partition (101) and the rear partition (102). A fan wiring harness tube (9) is also inserted between the front partition (101) and the rear partition (102). The main heat exchanger (12) has a volute structure with an inlet pipe (1201) connected to the outer end and an outlet pipe (1202) connected in the middle. The main heat exchanger (12) is placed between the front partition (101) and the rear partition (102). The inlet pipe (1201) and the outlet pipe (1202) pass through the rear partition (102) and are connected to the communicating vessel (11). An outlet water temperature probe is installed at the position where the communicating vessel (11) is connected to the outlet pipe (1202). The communicating vessel (11) is also connected to the water pump (10).

2. The embedded gas water heater according to claim 1, characterized in that: The outer cylinder (1) of the furnace body is inserted into a wall hole in a non-load-bearing wall, and the conical cylinder (2) is placed outdoors, while the control panel (4) is placed indoors. The control panel (4) is electrically connected to the main electrical control box (5).

3. The embedded gas water heater according to claim 1, characterized in that: The main heat exchanger (12) is also provided with a heat insulation felt (13) on the outside, and the gas pipe (8) and the fan wiring harness protective pipe (9) are placed on the outside of the heat insulation felt (13).

4. The embedded gas water heater according to claim 1, characterized in that: The flame outlet pipe of the fully premixed burner (7) passes through the front partition (101) and is placed in the combustion chamber in the middle of the main heat exchanger (12). A gas nozzle (702) is installed on the inner side of the fully premixed burner (7). A flame stabilizer plate (703) is provided on the inner side of the flame outlet pipe of the fully premixed burner (7), and the flame stabilizer plate (703) is located at the end of the gas nozzle (702).

5. The embedded gas water heater according to claim 4, characterized in that: The rear partition (102) also has an ignition and flame monitoring electrode (14) and a furnace pressure sampling tube (15) inserted in the middle position. The front end of the ignition and flame monitoring electrode (14) is placed in the middle of the volute of the main heat exchanger (12) and is opposite to the flame outlet tube of the fully premixed burner (7).

6. The embedded gas water heater according to claim 3, characterized in that: The lower end of the rear partition (102) is also inserted with a flue pressure sampling tube (16), and the front end of the flue pressure sampling tube (16) is directly opposite the lower outer side of the main heat exchanger (12) and the heat insulation felt (13).

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