CN219889787U - Combustion heat exchange assembly with primary wind shield and gas water heater - Google Patents

Abstract

The utility model relates to the technical field of household appliances, in particular to a combustion heat exchange assembly with a primary wind shield and a gas water heater, wherein the combustion heat exchange assembly comprises a combustor, and a primary air port for receiving gas and air is formed in one side wall of the combustor; a fuel gas supply unit including a nozzle aligned with the primary air port at a distance from the primary air port and injecting fuel gas into the primary air port; a primary air deflector having a wind deflector portion located on one side of a space between the primary air port and the nozzle and at least partially shielding the space from the one side. The preferred combustion heat exchange assembly of the present utility model can improve the stability of the gas combustion of the burner in the assembly by optimizing the stability of the gas feed.

Description

Combustion heat exchange assembly with primary wind shield and gas water heater

Technical Field

The utility model relates to the technical field of household appliances, in particular to a combustion heat exchange assembly with a primary wind deflector and a gas water heater.

Background

The gas water heater is the most convenient and economic device for quickly heating water at present, has high energy conversion efficiency, saves more energy compared with an electric water heater, and meets the requirement of double carbon.

The combustion heat exchange assembly shown in fig. 2 below is a main component of the gas water heater, and generally consists of a combustion heat exchange system and a gas supply assembly, wherein the combustion heat exchange system comprises a fan assembly, a heat exchange assembly and a burner assembly. For the updraft type combustion heat exchange system, the fan assembly is arranged above the burner assembly, and the burner assembly is connected with the fan assembly through the heat exchange assembly. When the burner assembly works, the burner assembly receives the fuel gas sprayed from the nozzle of the fuel gas supply assembly (comprising a transportation pipeline, a fuel gas distributor and the like) and burns, the high-temperature flue gas after burning flows out of the burner assembly under the attraction effect of the fan assembly, flows through the heat exchange assembly and realizes heat exchange with water to be heated, and then flows to the fan assembly and is discharged. The fan assembly not only guides the high-temperature flue gas after combustion, but also drives external air to enter the burner assembly from the fuel gas feeding port and the air ports at other positions to provide sufficient oxygen for combustion of fuel gas.

However, in practical use, it was found that the burner in the above system had a problem of unstable gas combustion.

Disclosure of Invention

The utility model aims at overcoming the defects of the prior art, and provides a combustion heat exchange assembly with a primary wind shield, which improves the stability of gas combustion of a combustor in the assembly by optimizing the stability of gas feeding.

On the basis, the gas water heater provided with the combustion heat exchange assembly with the primary wind shield is provided.

The technical solution of the utility model is as follows:

a combustion heat exchange assembly with a primary air deflector, comprising:

a primary air port for receiving fuel gas and air is formed in one side wall of the burner;

a fuel gas supply unit including a nozzle aligned with the primary air port at a distance from the primary air port and injecting fuel gas into the primary air port;

a primary air deflector having a wind deflector portion located on one side of a space between the primary air port and the nozzle and at least partially shielding the space from the one side.

In the scheme, aiming at the interval alignment of the primary air port and the nozzle, the fuel gas and part of air driven by the fuel gas are sprayed into the primary air port through the nozzle, so that the mode that the fuel gas and the air are jointly input into the burner is realized; when air flows between the primary air port and the nozzle in a direction perpendicular to the gas injection direction, shearing force is easily formed on the gas injected from the nozzle, so that the impact on the gas injection is caused, and the gas feeding is unstable, so that the problem of unstable gas combustion is solved. Through setting up the deep bead to make the wind shielding portion of deep bead place the interval one side between the last primary air mouth of combustor and the last nozzle of gas supply module, shelter from the interval between primary air mouth and the nozzle with following this side, with hinder the air to flow to between primary air mouth and the nozzle along the direction that is perpendicular to the gas injection direction, and then effectively weaken the shearing force that the air formed to the nozzle injection gas, slow down the impact to the gas injection, make the gas can more steadily follow primary air mouth input combustor in, improve the stability of gas combustion in the combustor.

Further preferably, one end of the wind shielding part is connected with the burner, and a channel for air circulation is arranged between the other end of the wind shielding part and the fuel gas supply assembly.

Further preferably, an end portion of the wind shielding portion has a portion aligned with the nozzle at an interval in the covering direction.

Further preferably, a portion of the wind shielding portion that contacts the burner is adjacent to the primary air port.

Further preferably, the primary air deflector is connected to a burner housing of the burner.

Further preferably, an installation part is arranged at one end of the wind shielding part, which is close to the burner housing, the installation part is adapted to the outer side surface of the burner housing, and the wind shielding part is fixedly connected with the burner housing through the installation part.

Further preferably, the wind shielding portion is integrally formed with the mounting portion.

Further preferably, the mounting portion is detachably connected to the burner housing.

Further preferably, a guide hole extending obliquely is provided in the wind shielding portion, and guides the air flow outside the wind shielding portion to flow into the primary air port approximately laterally along the guide hole.

The technical scheme has the main beneficial effects that:

through setting up the one-time deep bead that has the portion of keeping out the wind, can shelter from the interval between primary air outlet and the nozzle to hinder the air to flow to between primary air outlet and the nozzle along the direction looks vertically with the gas injection direction, and then can slow down the influence to the nozzle injection gas, make the gas that the nozzle was jetted out can jet to primary air outlet more steadily, and in the input combustor of primary air outlet, improve the stability of gas combustion in the combustor.

Further or more detailed benefits will be described in connection with specific embodiments.

Drawings

The utility model is further described with reference to the accompanying drawings:

fig. 1 is a schematic view of a primary wind deflector installation.

FIG. 2 is a schematic diagram of a prior art combustion heat exchange assembly.

FIG. 3 is a schematic illustration of the fit of nozzles in a conventional burner and gas supply assembly.

Fig. 4 is an enlarged schematic view of one configuration of the X portion of fig. 1.

FIG. 5 is a schematic view of a burner configuration with a primary air deflector.

Fig. 6 is a schematic view of the assembly of a primary wind deflector on a burner.

Fig. 7 is an enlarged schematic view of another structure of the X portion in fig. 1.

FIG. 8 is a schematic diagram of a gas water heater.

The figure shows: a bottom shell a, a burner b, a burner shell b1, a primary air port b11, a secondary air port b12, a discharge port b13, a primary wind shield b2, a wind shield b21, a drainage hole b211, a mounting part b22, a fire row b3, a feeding channel b31, a fan assembly c, a heat exchange assembly d, a fuel gas supply assembly e and a nozzle e1;

flame 1, primary air intake flow arrow 1, secondary air intake flow arrow 3, primary air intake flow arrow second 4, primary air intake flow arrow third 5.

Detailed Description

The utility model is illustrated by the following examples in which:

embodiment one:

the combustion heat exchange assembly, which is an important constituent part of the gas water heater, is shown with reference to fig. 2 and 8, and mainly comprises a combustion heat exchange system and a gas supply assembly e, which are installed on a bottom shell a of the gas water heater.

For a combustion heat exchange system, as shown in fig. 2, it mainly includes a burner b, a fan assembly c and a heat exchange assembly d.

Specifically, as shown in fig. 2 and fig. 3, the fan assembly c is disposed above the burner b, and the fan assembly c is communicated with the burner b through the heat exchange assembly d, so that the fan assembly c can form negative pressure and pump up high-temperature gas formed after combustion of fuel gas in the burner b through a channel inside the heat exchange assembly d.

Further, as shown in fig. 3, the burner b in this embodiment includes a burner housing b1, a primary air port b11 for inputting fuel is provided on the right side of the burner housing b1, a discharge port b13 for discharging high temperature gas after combustion and communicating with the heat exchange assembly d is provided on the upper end, a fire row b3 is installed in the burner housing b1, a feed channel b31 is provided in the fire row b3, one end of the feed channel b31 communicates with the primary air port b11, and the other end communicates with the discharge port b13 in a para position. During operation, fuel gas enters a feeding channel b31 of the fire row b3 from the primary air port b11, flows through the feeding channel b31, is discharged into a cavity where the row through port b13 is located for ignition combustion to form high-temperature gas, and under the negative pressure effect formed by the fan assembly c, the high-temperature gas is pumped from the row through port b13 to the heat exchange assembly d, flows to the fan assembly c after passing through the heat exchange assembly d and is discharged.

As for the gas supply assembly e, as shown in fig. 2 and 3, it mainly includes a pipe for transporting gas and a nozzle e1 connected to an end of the pipe for injecting gas.

Of course, in some gas water heaters, the gas supply assembly e may further include a gas proportional valve connected in the pipe to adjust the size of the gas, and a gas distributor to distribute the gas.

Specifically, as shown in fig. 3, the nozzle e1 and the primary air port b11 are arranged in a staggered manner, so that the nozzle e1 sprays fuel gas into the primary air port b11 and simultaneously can take up air into the burner b, thereby realizing premixing of the fuel gas and the air before combustion and improving the combustion effect.

At this time, the negative pressure formed by the fan assembly c can suck fuel through the feeding channel b31 and the primary air port b11, so as to optimize the feeding of fuel gas; at the same time, the air is sucked through the primary air port b11 to form an intake air flow, and these air flow portions easily flow between the primary air port b11 and the nozzle e1 in a direction perpendicular to the gas injection direction.

For example, in the updraft type combustion heat exchange system shown in fig. 2, the nozzle e1 sprays fuel gas to the left to the primary air port b11, and under the upward suction action of the fan assembly c, upward flowing air flows as shown by the primary air inlet flow arrow one 2 in fig. 3 are mainly formed, and the upward flowing air flows easily form shearing force on the fuel gas sprayed by the nozzle e1, so that the impact on the fuel gas spraying is caused, and the fuel gas feeding is unstable, so that the problem of unstable fuel gas combustion is caused.

Based on this, as shown in fig. 1 and fig. 4, a primary wind deflector b2 is added in this embodiment.

Specifically, the primary air deflector b2 has a wind deflector b21 located on one side of the space between the primary air port b11 and the nozzle e1, and at least partially shielding the space from this side. In the updraft type combustion heat exchange system shown in fig. 2, the primary air shield b2 is provided with a wind shielding portion b21 which is located below the interval between the primary air port b11 and the nozzle e1 and at least partially shields the interval from below.

In this way, air can be prevented from flowing between the primary air port b11 and the nozzle e1 along the direction perpendicular to the gas injection direction, so that the shearing force of the air on the injection of the gas from the nozzle e1 is effectively weakened, the impact on the gas injection is slowed down, the gas can be more stably input into the burner b from the primary air port b11, and the combustion stability of the gas in the burner b is improved.

The primary air deflector b2 may be mounted on the burner housing b1, the gas supply assembly e, or the bottom case a.

In this embodiment, the primary wind deflector b2 is preferably attached to the burner housing b1, and the primary wind deflector b2 can be preferably connected to the burner housing b 1.

Because the suction effect of the blower assembly c is stronger closer to the primary air port b11, the more easily an air flow having a shearing force on the gas jet is formed.

As shown in fig. 1 and 4, the left end of the wind shielding part b21 is preferably connected with the burner b to better block the strong airflow near the burner housing b 1; and a channel for air flow is reserved between the right end of the wind shielding part b21 and the gas supply assembly e, so that air flow can flow into the primary air port b11 in the direction of a primary air inlet flow arrow two 4 in fig. 4 to be premixed with gas, and shearing force influence on the gas sprayed by the nozzle e1 is not easy to be formed.

At this time, the end of the wind shielding portion b21 is preferably located at a position spaced apart from the nozzle e1 in the covering direction.

For example, as shown in fig. 4, it is preferable that the right end of the wind shielding portion b21 has a portion vertically aligned with the nozzle e1, that is, the wind shielding portion b21 can completely shield the space between the primary air port b11 and the nozzle e1 from below, so as to form a larger blocking area, and prevent the air flow from flowing vertically upward between the primary air port b11 and the nozzle e1.

Meanwhile, it is preferable that the portion where the wind shielding portion b21 contacts the burner b is close to the primary air port b11.

For example, as shown in fig. 4, the portion where the left end of the wind shielding portion b21 meets the burner b is close to the lower end portion of the primary air port b11, so that the air flow does not easily flow vertically upward between the primary air port b11 and the nozzle e1 when bypassing the wind shielding portion b21, but easily flows laterally into the primary air port b11 by the suction of the fan assembly c.

As shown in fig. 5 and 6, a mounting part b22 is arranged at one end of the wind shielding part b21 close to the burner housing b1, the mounting part b22 is adapted to the outer side surface of the burner housing b1, and the wind shielding part b21 is fixedly connected with the burner housing b1 through the mounting part b22, so that the wind shielding part b21 can keep a stable state to realize blocking of air flow.

Further, it is preferable that the wind shielding portion b21 is integrally formed with the mounting portion b22, and for example, as shown in fig. 5 and 6, the mounting portion b22 is formed by bending a left end of the wind shielding portion b21 and is bonded to a left side surface of the burner housing b 1.

Meanwhile, the mounting part b22 is detachably connected to the burner housing b1 by adopting screws, pins and the like, so that the primary wind shield b2 can be conveniently detached and replaced.

As a further development, when it is necessary to increase the air intake amount of the primary air port b11, as shown in fig. 7, a guide hole b211 extending obliquely may be additionally provided in the wind shielding portion b21, which guides the air flow below the wind shielding portion b21 to approach the lateral flow into the primary air port b11 along the guide hole b 211.

On the basis of the above, the lower end of the burner housing b1 may be further provided with a secondary air port b12, and the secondary air port b12 communicates with the exhaust port b13 to form an air flow as shown by a secondary air intake flow arrow 3 in fig. 3 under the action of the fan assembly c for combustion of gas exhausted from the feed passage b31 of the fire exhaust b 3.

Embodiment two:

a gas water heater, as shown in figure 8, comprises a combustion heat exchange assembly with a primary wind deflector in accordance with a first embodiment.

The foregoing description is only of the preferred embodiments of the utility model and is not intended to limit the scope of the utility model. In addition, references to the terms "vertical", "horizontal", "front", "rear", etc., in the embodiments of the present utility model indicate that the apparatus or element in question has been put into practice, based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product is conventionally put in use, merely for convenience of description and to simplify the description, but do not indicate or imply that the apparatus or element in question must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. It should be further noted that, unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," and the like in the description are to be construed broadly as, for example, "connected," either permanently connected, detachably connected, or integrally connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A combustion heat exchange assembly with a primary air deflector, the combustion heat exchange assembly comprising:

a burner (b) having a primary air port (b 11) provided in a side wall thereof for receiving fuel gas and air;

a fuel gas supply unit (e) including a nozzle (e 1) aligned with the primary air port (b 11) at a distance therefrom and injecting fuel gas into the primary air port (b 11);

a primary air deflector (b 2) having a wind deflector (b 21) located on one side of the interval between the primary air port (b 11) and the nozzle (e 1) and at least partially shielding the interval from the side.

2. The combustion heat exchange assembly with primary air deflector of claim 1, wherein: one end of the wind shielding part (b 21) is connected with the burner (b), and a channel for air circulation is arranged between the other end of the wind shielding part and the fuel gas supply assembly (e).

3. The combustion heat exchange assembly with primary air deflector of claim 2, wherein: the end of the wind shielding part (b 21) is provided with a part which is aligned with the nozzle (e 1) at intervals in the covering direction.

4. The combustion heat exchange assembly with primary air deflector of claim 2, wherein: a portion of the wind shielding portion (b 21) contacting the burner (b) is close to the primary air port (b 11).

5. The primary air deflector-equipped combustion heat exchange assembly of any one of claims 1 to 4, wherein: the primary wind deflector (b 2) is connected to a burner housing (b 1) of the burner (b).

6. The combustion heat exchange assembly with primary air deflector of claim 5, wherein: the one end that keeps out wind portion (b 21) is close to burner housing (b 1) is provided with installation department (b 22), installation department (b 22) adaptation burner housing (b 1) lateral surface sets up, just keep out wind portion (b 21) pass through installation department (b 22) with burner housing (b 1) looks rigid coupling.

7. The combustion heat exchange assembly with primary air deflector of claim 6, wherein: the wind shielding part (b 21) is formed integrally with the mounting part (b 22).

8. The combustion heat exchange assembly with primary air deflector of claim 6, wherein: the mounting portion (b 22) is detachably connected to the burner housing (b 1).

9. The combustion heat exchange assembly with primary air deflector of claim 1, wherein: a flow guiding hole (b 211) extending obliquely is arranged in the wind shielding part (b 21), and the air flow outside the wind shielding part (b 21) is guided to flow into the primary air port (b 11) along the flow guiding hole (b 211) in a near transverse direction.

10. A gas water heater, characterized in that: a combustion heat exchange assembly comprising a primary air deflector according to any one of claims 1 to 9.