WO2018120151A1

WO2018120151A1 - Windshield and gas water heater having the same

Info

Publication number: WO2018120151A1
Application number: PCT/CN2016/113797
Authority: WO
Inventors: 代先锋; 仇正良; 梁国荣
Original assignee: 芜湖美的厨卫电器制造有限公司
Priority date: 2016-12-30
Filing date: 2016-12-30
Publication date: 2018-07-05

Abstract

Provided is a windshield (50) and a gas water heater (1) having the same, the windshield (50) comprising: a windshield cover (100), provided with a smoke inlet (110), a smoke outlet (120) and an exhaust air duct (130); a windshield inner cover (200) which is disposed in the windshield cover (100) and located at the smoke outlet (120). A one-way smoke outlet (210) is arranged on the windshield inner cover (200), and a smoke exhaust duct (220) is defined between the windshield inner cover (200) and the windshield cover (100). The wind shield (200) has a smoke guide surface (230) for directing the airflow, which flows out of the windshield (50) via the one-way smoke outlet (210), to the smoke exhaust duct (220), and an air guide surface (240) for guiding the airflow, which flows into the windshield (50) via the smoke exhaust passage (220), to the exhaust air duct (130).

Description

Windshield and gas water heater with same

Technical field

The present invention relates to the field of electrical appliance manufacturing technology, and in particular to a windshield and a gas water heater having the windshield.

Background technique

In the volumetric gas water heater of the related art, in order to facilitate the exhausting of smoke, the burner is usually disposed under the flue so that when there is wind outside, that is, when the air is blown outside, the external wind will form a descending airflow of a certain flow velocity in the flue. The descending airflow blows along the flue to the burner, affecting the combustion conditions, easily leading to flame extinction, tempering and flames exceeding the boundary of the combustion chamber, and easily causing excessive emissions of flue gas.

Summary of the invention

The present invention aims to solve at least one of the above technical problems in the related art to some extent. To this end, the present invention provides a windshield that can reduce the influence of the external air blow on the combustion condition, and achieve the purpose of stable combustion and reasonable smoke.

The invention also proposes a gas water heater having the windshield.

According to an embodiment of the first aspect of the present invention, a windshield is provided, the windshield cover includes: a windproof cover, the windshield cover is provided with a smoke inlet, a smoke exhaust port and an exhaust air flow passage; and a windproof inner cover, a windproof inner cover is disposed in the windproof cover and located at the exhaust vent, wherein the windproof inner cover is provided with a one-way flue gas outlet, and the windproof inner cover and the windproof cover define a smoke exhaust flow a windproof inner cover having a smoke guiding surface for guiding an airflow flowing out of the windshield from the one-way flue gas outlet to the exhaust gas flow path and for flowing the windproof flow into the windproof passage The air flow of the hood is directed to the air guiding surface of the exhaust air flow path.

The windshield according to the embodiment of the invention can reduce the influence on the combustion condition when the outer air blows, and achieve the purpose of stable combustion and reasonable smoke.

In addition, the windshield according to an embodiment of the present invention may further have the following additional technical features:

According to an embodiment of the present invention, the windshield cover includes: an outer cover body, an upper end of the outer cover body is open to form the exhaust vent, and a lower end of the outer cover is open to form the smoke inlet, the cover The exhaust flow passage is defined between the body and the windproof inner cover; the pillar is connected to a lower circumference of the outer cover to form the exhaust flow below a lower circumference of the outer cover Road.

According to an embodiment of the present invention, the windshield cover further includes: a shroud attached to an upper circumference of the outer casing and disposed around the exhaust vent.

According to an embodiment of the present invention, the cross-sectional area of the inner space of the outer cover gradually increases from top to bottom.

According to an embodiment of the invention, the struts are plural and are spaced apart along the circumference of the outer casing.

According to an embodiment of the present invention, the windproof inner cover includes: an inner cover body, the inner cover body and the windproof outer cover define the exhaust flow passage, and the inner cover body is provided with a through hole, The upper surface of the inner cover body constitutes the air guiding surface; a windshield disposed on the inner cover body and located above the through hole, the windshield partially blocking the through hole The holes form a single-phase flue gas outlet toward the exhaust flow path, and an inner surface of the windshield constitutes the smoke guiding surface.

According to an embodiment of the invention, the upper surface of the inner cover body extends obliquely downward from the center to the outer periphery.

According to an embodiment of the invention, the through holes are plural and are disposed along a circumferential interval of the inner cover body, and the windshield is a plurality of and respectively located above the plurality of through holes.

According to an embodiment of the invention, the windshield cover and the windshield inner cover are connected by a plurality of ribs spaced along the circumferential direction of the exhaust vent.

According to an embodiment of the invention, the central axis of the windshield inner cover coincides with the central axis of the windshield cover.

According to an embodiment of the second aspect of the present invention, a gas water heater includes: a casing; a flue, the flue is disposed in the casing and penetrates a top wall of the casing; a burner, a a burner disposed in the outer casing and located below the flue; a windshield, the windshield being a windshield according to the embodiment of the first aspect of the invention, the windshield being mounted on the outer casing Above and above the flue.

A gas water heater according to an embodiment of the present invention has advantages such as stable combustion, reasonable flue gas, and the like by using the windshield according to the embodiment of the first aspect of the present invention.

According to an embodiment of the present invention, the gas water heater further includes a liner, the liner being disposed in the outer casing and the flue passing through the inner casing.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the structure and smoke exhaust of a gas water heater without external air blowing according to an embodiment of the present invention.

2 is a schematic view showing the structure and smoke exhausting of a gas water heater when there is an external air blow according to an embodiment of the present invention.

3 is a perspective cross-sectional view of a draft shield in accordance with an embodiment of the present invention.

4 is a plan cross-sectional view of a draft shield in accordance with an embodiment of the present invention.

Figure 5 is a top plan view of a draft shield in accordance with an embodiment of the present invention.

Reference mark:

Gas water heater 1,

The outer casing 10, the inner casing 20, the flue 30, the burner 40, the windshield 50,

Windproof cover 100, smoke inlet 110, exhaust vent 120, exhaust runner 130, outer cover 140, struts 150, shroud 160,

The windproof inner cover 200, the one-way flue gas outlet 210, the exhaust gas flow path 220, the smoke guiding surface 230, the air guiding surface 240, the inner cover body 250, the windshield 260,

Rib 300.

detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

A gas water heater 1 according to an embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1 and FIG. 2, a gas water heater 1 according to an embodiment of the present invention includes a casing 10, a flue 30, a burner 40, and a windshield 50. Further, the gas water heater 1 may be a volumetric gas water heater, that is, a gas water heater. 1 also includes a liner 20. Among them, the burner 40 may be an atmospheric burner.

A draft shield 50 according to an embodiment of the present invention will first be described with reference to the accompanying drawings.

As shown in FIGS. 1 to 5, the windshield 50 according to an embodiment of the present invention includes a windshield cover 100 and a windproof inner cover 200.

The windshield cover 100 is provided with a smoke inlet 110, a smoke exhaust port 120 and an exhaust air flow passage 130. The smoke inlet 110 is located at the bottom of the windproof cover 100, the smoke outlet 120 is located at the top of the windproof cover 100, and the exhaust flow channel 130 is located at the windproof cover. The side of the 100. The windproof inner cover 200 is disposed in the windproof outer cover 100, and the windproof inner cover 200 is located at the smoke exhausting opening 120. The windproof inner cover 200 is provided with a one-way flue gas outlet 210, and the windproof inner cover 200 and the windproof outer cover 100 define a smoke exhausting The flow path 220 in which the air flow can only flow out of the windproof inner cover 200 from the one-way smoke outlet 210 and cannot flow into the windproof inner cover 200 from the one-way smoke outlet 210. The windproof inner cover 200 has a smoke guiding surface 230 and a wind guiding surface 240 for guiding the airflow flowing out of the windshield 50 from the one-way flue gas outlet 210 to the exhaust gas flow path 220, and the air guiding surface 240 is used for discharging the smoke The flow of the flow path 220 into the windshield 50 is directed to the exhaust flow path 130.

In the gas water heater 1 according to an embodiment of the present invention, the inner liner 20 is disposed inside the outer casing 10. The flue 30 is disposed within the outer casing 10 and extends through the inner wall of the inner casing 20 and the outer casing 10. The burner 40 is disposed within the outer casing 10 and below the flue 30. The windshield 50 is mounted on the outer top wall surface of the outer casing 10 and the windshield 50 is located above the flue 30. The top of the flue 30 is in communication with the smoke inlet 110 of the draft shield 50, which is defined by the windshield 100 and the outer top wall of the outer casing 10.

The smoke exhausting process of the windshield 50 according to an embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, when there is no external air blow, the flue gas generated by the burner 40 rises to the shroud 160 through the flue 30, and a part of the flue gas flows out through the one-way flue gas outlet 210 on the windproof inner cover 200. The smoke surface 230 is guided to the exhaust flow path 220 and discharged from the exhaust flow path 220, and another portion of the flue gas is directly discharged through the exhaust flow path 220.

As shown in FIG. 2, in the case of external blowing, the external wind is blown down from the exhaust flow path 220, and mixed with the flue gas flowing into the exhaust flow path 220 through the one-way flue gas outlet 210, on the wind guiding surface. Guided by 240, it flows to the exhaust passage 130 and is discharged from the exhaust passage 130 to prevent external wind from blowing toward the burner 40 along the flue 30, thereby avoiding the influence on the combustion conditions in the case of external blowing.

The windshield 50 according to the embodiment of the present invention is provided with a unidirectional flue gas outlet 210, an exhaust air flow path 130, and a smoke exhaust flow path 220, and is provided for guiding the airflow flowing out of the windshield 50 from the one-way flue gas outlet 210 to the exhaust gas. The smoke guiding surface 230 of the flow path 220 and the air flow for flowing the exhaust air flow path 220 into the windshield 50 are guided to the air guiding surface 240 of the exhaust air flow path 130, so that the flue gas can be discharged from the exhaust gas flow path 220 when there is no external air blowing. The mixed flue gas can be discharged from the exhaust air flow passage 130 when there is an external air blow, so that the influence of the external air blow on the combustion working condition can be reduced, and the purpose of stable combustion and reasonable flue gas can be achieved.

The gas water heater 1 according to the embodiment of the present invention has advantages such as stable combustion, reasonable flue gas, and the like by using the windshield 50 according to the above embodiment of the present invention.

A windshield 50 according to an embodiment of the present invention will now be described with reference to the accompanying drawings.

In some embodiments of the present invention, as shown in FIGS. 3-5, the windshield cover 100 includes a cover body 140 and a strut 150.

The outer cover body 140 has a circular cross section, and the upper end of the outer cover body 140 is open to form a smoke exhaust port 120. The lower end of the outer cover body 140 is open to form the smoke inlet 110, and the outer cover body 140 and the windproof inner cover 200 define a smoke exhaust flow. Road 220. The pillar 150 is coupled to the lower circumference of the outer casing 140 to form an exhaust flow path 130 below the lower circumference of the outer casing 140 and above the top wall of the outer casing 10. Therefore, the smoke inlet 110, the smoke exhaust port 120 and the exhaust air flow passage 130 can be formed on the windproof cover 100, and the positions of the smoke inlet 110, the smoke exhaust port 120 and the exhaust air flow passage 130 are reasonably distributed to facilitate the discharge of the flue gas. .

Further, as shown in FIG. 3 to FIG. 5, the windshield cover 100 further includes a flow guiding cover 160 connected to the upper circumference of the outer cover body 140, and the air guiding cover 160 is a ring shape disposed around the exhaust vent 120. The flue gas discharged from the exhaust flow passage 220 is emptied under the guidance of the shroud 160 to prevent the exhausted flue gas from spreading.

Optionally, as shown in FIG. 3 to FIG. 5, the cross-sectional area of the inner space of the outer cover body 140 is gradually increased from top to bottom. For example, the outer cover body 140 may be generally in the shape of a truncated cone. The upward discharge of the gas, on the other hand, facilitates the mixing of the flue gas to the exhaust runner 130 when there is an external blow.

Advantageously, as shown in FIGS. 3-5, in order to improve the stability of the windshield 50 on the outer casing 10, the plurality of pillars 150 are disposed at equal intervals along the circumferential direction of the outer casing 140, and the lower ends of the plurality of pillars 150 are respectively installed. On the top wall of the outer casing 10.

In some specific examples of the invention, as shown in FIGS. 3-5, the windshield inner cover 200 includes an inner shroud body 250 and a windshield 260.

A smoke exhaust passage 220 is defined between the outer side surface of the inner cover body 250 and the inner side surface of the outer cover body 140. The inner cover body 250 is provided with a through hole, and the upper surface of the inner cover body 250 (also referred to as an outer side surface) is formed. Wind guiding surface 240. Windshield 260 is located at The inner cover body 250 is located above the through hole, and the windshield 260 partially blocks the through hole to form a one-way flue gas outlet 210 facing the exhaust flow path 220 (ie, facing the outer cover body 140), the windshield The inner surface of 260 constitutes a smoke guide surface 230. Therefore, the one-way flue gas outlet 210, the smoke guiding surface 230 and the air guiding surface 240 can be formed on the windproof inner cover 200, and in the case of external blowing, the external wind cannot be singular due to the shielding of the windshield 260. The windshield 50 is introduced into the flue gas outlet 210, and can only flow back into the windshield 50 from the exhaust gas flow path 220, and is guided to the exhaust air flow path 130 by the air guiding surface 240.

Optionally, as shown in FIG. 3 to FIG. 5, the upper surface of the inner cover body 250 extends obliquely downward from the center to the outer periphery. For example, the inner cover body 250 may be substantially conical, of course, the inner cover body 250 The top can be a circular transition. This can facilitate the guiding of the flue gas and the wind by the inner cover body 250.

The plurality of through holes are disposed along the circumferential direction of the inner cover 250, and the windshield 260 is plural and located above the plurality of through holes, thereby forming a plurality of one-way flue gas outlets. 210 and a plurality of air guiding surfaces 240, thereby improving the efficiency of exhausting smoke.

In some specific examples of the present invention, as shown in FIGS. 3-5, the central axis of the windshield inner cover 200 coincides with the central axis of the windshield cover 100, that is, the central axis of the inner shroud 250 coincides with the central axis of the outer shroud 140. The exhaust gas flow path 220 is an annular shape extending in the circumferential direction of the windshield 50 and the flow area at the same is equal.

Optionally, as shown in FIG. 3 to FIG. 5, in order to improve the stability of the overall structure of the windshield 50, the windshield cover 100 and the windshield inner cover 200 are separated by a plurality of ribs 300 disposed along the circumferential direction of the exhaust vent 120. Connected. Specifically, each rib 300 is disposed obliquely with respect to the horizontal direction, the upper end of the rib 300 is connected to the upper peripheral edge of the shroud 160, and the lower end of the rib 300 is connected to the outer peripheral edge of the inner cover 250.

Other configurations and operations of the gas water heater 1 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position of indications such as "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the invention and the simplification of the description, and does not indicate or imply that the device or component referred to has a specific orientation, is constructed and operated in a specific orientation, and thus It is not to be understood as limiting the invention.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical connection, or electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be two The internal communication of the components or the interaction of the two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Further, various embodiments or examples described in this specification can be joined and combined by those skilled in the art.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims

A windshield, comprising:

a windproof cover, wherein the windproof cover is provided with a smoke inlet, a smoke exhaust port and an exhaust air flow passage;

a windproof inner cover, the windproof inner cover is disposed in the windproof cover and located at the exhaust vent, the windproof inner cover is provided with a unidirectional flue gas outlet, and the windproof inner cover and the windproof outer cover Between the exhaust gas flow passages, the windproof inner cover has a smoke guiding surface for guiding the airflow flowing out of the windshield from the one-way flue gas outlet to the exhaust gas flow path, and for discharging the smoke The flow of the flow path into the windshield is directed to the air guiding surface of the exhaust flow path.
The windshield of claim 1 wherein said windshield cover comprises:

An outer cover body, an upper end of the outer cover body is open to form the exhaust vent, the lower end of the outer cover body is open to form the air inlet, and the row is defined between the outer cover and the windproof inner cover Smoke flow path;

a post connected to a lower circumference of the outer cover to form the exhaust flow path below a lower circumference of the outer cover.
The windshield according to claim 2, wherein the windshield cover further comprises:

a shroud connected to an upper circumference of the outer casing and disposed around the exhaust vent.
The draft shield according to claim 2, wherein a cross-sectional area of the inner space of the outer cover gradually increases from top to bottom.
The draft shield according to claim 2, wherein the plurality of struts are provided at a plurality of intervals along the circumferential direction of the outer cover.
The windshield of claim 1 wherein said windshield inner cover comprises:

An inner cover body, the inner cover body and the windproof outer cover define the exhaust flow passage, the inner cover body is provided with a through hole, and an upper surface of the inner cover body constitutes the air guiding surface;

a windshield disposed on the inner cover body and located above the through hole, the windshield partially blocking the through hole to form a single phase smoke toward the exhaust flow path An air outlet, the inner surface of the windshield forming the smoke guiding surface.
The draft shield according to claim 6, wherein an upper surface of said inner cover body extends obliquely downward from a center toward an outer periphery.
The windshield according to claim 6, wherein the plurality of through holes are disposed at intervals along a circumferential direction of the inner cover body, and the windshield is provided in plurality and respectively located in the plurality of through holes. Above the hole.
A draft shield according to any one of claims 1 to 8, wherein the windshield cover and the windshield inner cover are connected by a plurality of ribs spaced apart in the circumferential direction of the exhaust vent.
The windshield according to any one of claims 1 to 8, characterized in that the central axis of the windproof inner cover The wire coincides with a central axis of the windshield.
A gas water heater characterized by comprising:

shell;

a flue, the flue is disposed in the outer casing and penetrates a top wall of the outer casing;

a burner disposed within the outer casing and below the flue;

A windshield that is a windshield according to any one of claims 1 to 10, the windshield being mounted on the outer casing and above the flue.
The gas water heater according to claim 11, further comprising:

a bladder, the bladder being disposed within the outer casing and the flue passing through the bladder.