WO2018040601A1

WO2018040601A1 - Flue assembly of water heater, and water heater

Info

Publication number: WO2018040601A1
Application number: PCT/CN2017/082586
Authority: WO
Inventors: 陆祖安; 王明; 梁国荣; 黄官贤; 杜小文
Original assignee: 芜湖美的厨卫电器制造有限公司; 美的集团股份有限公司
Priority date: 2016-08-31
Filing date: 2017-04-28
Publication date: 2018-03-08

Abstract

A flue assembly (100) of a water heater, and the water heater. The flue assembly (100) defines a channel (1) that allows flue gas to flow, the channel (1) comprising: a main body section (3), a contraction section (4), and a transition section (5). One end of the main body (3) is communicated with a flue inlet (11). The contraction section (4) comprises a first end (41) and a second end (42). The first end (41) is communicated with the other end of the body section (3). The second end (42) is communicated with a flue outlet (12). The width of the first end (41) is W1, and the width of the second end (42) is W2. In a cross section vertical to the flowing direction of flue gas, the cross sectional area of the first end (41) is S1, and the cross sectional area of the second end (42) is S2, wherein W1 is greater than W2, and S1 is equal to S2.

Description

Flue assembly and water heater for water heater

Technical field

The invention relates to the technical field of water heaters, in particular to a flue assembly and a water heater of a water heater.

Background technique

In the related art, all premixed gas water heaters/wall-hung boilers mostly use inverted combustion, and the flue gas generated by the combustion flows from the top of the heat exchanger through the heat exchange sheet to the bottom of the heat exchanger, and finally returns to the water heater from the bottom through the flue. The top of the wall hob is discharged. Affected by the structure of the water heater/wall-hung boiler, the flue structure is often designed to be more complicated, and the complex structure has a great influence on the aerodynamic noise, which is prone to large noise.

Summary of the invention

The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, the present invention provides a flue assembly for a water heater, the flue assembly of the water heater having the advantages of simple structure and low noise.

The invention also proposes a water heater comprising a flue assembly of the above described water heater.

A flue assembly of a water heater according to an embodiment of the present invention, the flue assembly defining a passage for the flow of flue gas, the passage having a flue inlet and a flue outlet, the passage comprising: a body section, the body section One end is in communication with the flue inlet; a constricted section having a first end and a second end, the first end being in communication with the other end of the body segment, the second end being opposite the smoke The passage outlet is in communication, the first end has a width W1, the second end has a width W2, and the cross-sectional area of the first end is S1 in a cross section perpendicular to the flow direction of the flue gas. The cross-sectional area of the second end is S2, wherein the W1>the W2, the S1=the S2; and the transition section, the transition section has a third end and a fourth end, the third An end is in communication with the constricted section and the third end is coupled to a top wall of the constricted section, and the flue outlet is disposed at the fourth end.

A flue assembly according to an embodiment of the present invention, by providing the flue assembly as a main body section, a constricted section and a transition section, and making the width of the first end of the constricted section larger than the width of the second end, the cross-sectional area of the first end is equal to The cross-sectional area of the second end, while allowing the third end of the transition section to communicate with the top wall of the constricted section, simplifies the structure of the flue assembly, reduces aerodynamic noise of the flue assembly, and reduces pressure loss of the flue assembly.

According to some embodiments of the invention, the W1 ≤ 40 cm.

According to some embodiments of the invention, the W2 ≥ 6 cm.

According to some embodiments of the invention, the cross-sectional area of the body segment is S3 in a cross section perpendicular to the flow direction of the flue gas, and S3 = S1.

According to some embodiments of the invention, the body segment has a first inner bottom wall formed as a plane, the constricted section having Formed as a planar second inner bottom wall, the first inner bottom wall is coupled to the second inner bottom wall, and the first inner bottom wall and the second inner bottom wall are in the same plane.

According to some embodiments of the present invention, a bending section is provided at a position of the main body section near the inlet of the flue, the bending section is bent toward one side of the passage, and the flue inlet is formed at The free end of the bent section.

According to some embodiments of the invention, the width of the constricted section gradually decreases in a direction from the first end to the second end.

In some embodiments of the present invention, the transition section includes: a horizontal section, a rear end of the horizontal section is formed as the third end; and a vertical section, one end of the vertical section and the horizontal section The front end is connected, and the other end of the vertical section is formed as the flue outlet.

In some embodiments of the invention, a smooth transition between the vertical section and the horizontal section is achieved.

A water heater according to an embodiment of the present invention includes a flue assembly of the above water heater.

A water heater according to an embodiment of the present invention, by providing a flue assembly as a main body section, a constricted section and a transition section, and making a width of the first end of the constricted section larger than a width of the second end, the cross-sectional area of the first end is equal to the second The cross-sectional area of the end, and at the same time, the third end of the transition section communicates with the top wall of the constricted section, which simplifies the structure of the flue assembly, reduces the aerodynamic noise of the flue assembly, and reduces the pressure loss of the flue assembly.

DRAWINGS

1 is a schematic structural view of a flue assembly according to an embodiment of the present invention;

2 is a schematic structural view of a flue assembly according to an embodiment of the present invention;

3 is a schematic structural view of a flue assembly in accordance with an embodiment of the present invention.

Reference mark:

Flue assembly 100,

Channel 1, flue inlet 11, flue outlet 12,

Bending section 2, flange 21, connecting rib 22, mounting portion 23,

Main body segment 3, first inner bottom wall 31,

Shrinking section 4, first end 41, second end 42, second inner bottom wall 43, top wall 44,

Transition section 5, third end 51, fourth end 52, smoke temperature probe interface 53, horizontal section 54, vertical section 55, elbow 56.

detailed description

Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. 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.

In the description of the present invention, it is to be understood that the terms "lateral", "width", "upper", "lower", "front", "rear", The orientation or positional relationship of the indications of "left", "right", "inside", "outside", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, for convenience of description of the present invention and simplified description. Instead of indicating or implying that the device or component referred to must have a particular orientation, constructed and operated in a particular orientation, it is not to be construed 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" or "second" may include at least one 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 in one piece; it may be a mechanical connection, or it may be an electrical connection or a communication with each other; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship between two elements. Unless otherwise expressly defined. 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.

A flue assembly 100 for a water heater in accordance with an embodiment of the present invention will now be described with reference to Figures 1-3. The flue assembly 100 defines a passage 1 for the flow of flue gas, the passage 1 having a flue inlet 11 and a flue outlet 12.

As shown in Figures 1-3, the channel 1 comprises a body section 3, a constricted section 4 and a transition section 5.

Specifically, one end of the main body section 3 (the lower end as shown in FIG. 2) communicates with the flue inlet 11 having a first end 41 and a second end 42, the first end 41 and the other end of the main body section 3 (upper end as shown in Fig. 2) communicates, the second end 42 communicates with the flue outlet 12, the first end 41 has a width W1, and the second end 42 has a width W2 in a direction perpendicular to the flow direction of the flue gas. In the cross section, the first end 41 has a cross-sectional area of S1, and the second end 42 has a cross-sectional area of S2, where W1 > W2 and S1 = S2. Thereby, the structure of the flue assembly 100 can be simplified and made to satisfy the structure of the water heater or the fireplace, and at the same time, the aerodynamic noise of the flue assembly 100 can be reduced, and the pressure loss of the flue assembly 100 can be reduced, and the water heater or the fireplace can be improved. Performance.

The transition section 5 has a third end 51 and a fourth end 52, the third end 51 is in communication with the constricted section 4 and the third end 51 is connected to the top wall 44 of the constricted section 4, and the flue outlet 12 is provided at the fourth end 52. Therefore, not only the structure of the flue assembly 100 can meet the structural requirements of the water heater or the fireplace, but also the structure of the flue assembly 100 and the water heater or the fireplace can be prevented, and the compactness and rationality of the structure such as the water heater or the fireplace can be ensured. . At the same time, the structure and processing technology of the flue assembly 100 can be simplified, and the pressure loss of the flue gas from the contraction section 4 into the transition section 5 can be reduced, the aerodynamic noise of the flue gas can be reduced, and the performance of the water heater or the fireplace can be improved.

It should be noted that when the structure of the flue assembly 100 is relatively complicated, the complicated structure has a great influence on the aerodynamic noise, and a large noise is likely to occur. Moreover, when the passage 1 of the flue gas flowing in the flue assembly 100 is long, the overall pressure loss of the flue assembly 100 is generally large, affecting the performance of the water heater or the fireplace.

The flue assembly 100 according to an embodiment of the present invention, by arranging the flue assembly 100 as the main body section 3, the constricted section 4, and The transition section 5, and the width of the first end 41 of the constricted section 4 is greater than the width of the second end 42, the cross-sectional area of the first end 41 is equal to the cross-sectional area of the second end 42, and at the same time, the section of the transition section 5 The three ends 51 communicate with the top wall 44 of the constricted section 4 to simplify the structure of the flue assembly 100, reduce the aerodynamic noise of the flue assembly 100, and reduce the pressure loss of the flue assembly 100.

In some embodiments of the invention, as shown in Figure 2, W1 ≤ 40 cm. It has been verified by experiments that when W1≤40cm, the width of the flue assembly 100 can be reduced, the structure of the flue assembly 100 can be simplified, and at the same time, the occupied space of the flue assembly 100 can be reduced, so that the structure of the water heater or the fireplace is more compact. ,reasonable. In addition, the pressure loss of the flue assembly 100 can be reduced to improve the performance of the water heater or the fireplace.

In some embodiments of the invention, as shown in Figure 2, W2 > 6 cm. It has been verified by experiments that when W2 ≥ 6 cm, the structure and processing technology of the flue assembly 100 can be simplified, and at the same time, the pressure loss of the flue assembly 100 can be reduced, and the performance of the water heater or the fireplace can be improved.

In some embodiments of the invention, the cross-sectional area of the body segment 33 is S3, S3 = S1, in a cross-section perpendicular to the direction of flow of the flue gas. When the flue gas flows in the passage 1, since the cross-sectional area in the main body section 3 is equal to the cross-sectional area of the first end 41 of the constricted section 4, the flow of the flue gas from the main body section 3 to the constricted section 4 can be reduced. Pressure loss, reduce the aerodynamic noise of the flue gas, improve the performance of water heaters or fireplaces. Of course, in the cross section perpendicular to the flow direction of the flue gas, the cross-sectional area in the constricted section 4 can be equal everywhere, thereby further reducing the pressure loss of the flue gas flow through the constricted section 4, and reducing the aerodynamic noise of the flue gas. Improve the performance of water heaters or fireplaces.

In some embodiments of the invention, as shown in Figure 3, the body section 3 has a first inner bottom wall 31 formed in a plane, the constricted section 4 having a second inner bottom wall 43 formed as a flat surface, a first inner bottom wall 31 is connected to the second inner bottom wall 43, and the first inner bottom wall 31 and the second inner bottom wall 43 are located in the same plane. Thereby, the positioning and processing of the flue assembly 100 are facilitated, the production cycle is saved, and the production cost is reduced.

In some embodiments of the present invention, as shown in Figures 1-3, a portion of the body section 3 adjacent the flue inlet 11 is provided with a bent section 2 that faces one side of the channel 1 (e.g. The front side shown in Fig. 3 is bent, and the flue inlet 11 is formed on the free end of the bent section 2 (the front end shown in Fig. 3). The setting of the bending section 2 facilitates the connection of the flue assembly 100 with the flue gas outlet of the water heater or the fireplace, and at the same time, when the bending section 2 is set, the structure of the water heater or the fireplace can be made more compact and reasonable.

In some embodiments of the present invention, as shown in FIG. 2, the width of the constricted section 4 is gradually reduced in the direction from the first end 41 to the second end 42, that is, in the direction from the lower end to the upper end shown in FIG. small. Thereby, the structure and the processing technology of the shrinking section 4 are simplified, the production cycle is saved, and the production cost is reduced. For example, in the example shown in FIG. 2, the width of the body section 3 remains unchanged along the direction of flow of the flue gas, and the width of the first end 41 of the constricted section 4 is equal to that of the body section 3, from the first end 41. In the direction to the second end 42, the left side wall of the constricted section 4 is flush with the left side wall of the main body section 3, and the right side wall of the constricted section 4 is from the first end 41 to the second end 42. The direction is inclined toward the left side wall to gradually reduce the width of the constricted section 4 in the direction from the first end 41 to the second end 42. Of course, the invention is not limited thereto, from the first end 41 to In the direction of the second end 42, the side wall of the left side of the constricted section 4 may be inclined toward the right side wall, and the side wall of the right side of the constricted section 4 may be inclined toward the left side wall to be from the first end 41 to In the direction of the second end 42, the width of the constricted section 4 is gradually reduced. It is of course also possible to keep the right side wall of the constricted section 4 flush with the right side wall of the main body section 3 such that the left side wall of the constricted section 4 is again from the first end 41 to the second end 42 toward the right side. The side walls are inclined.

In some embodiments of the invention, as shown in Figures 1 and 3, the transition section 5 includes a horizontal section 54 and a vertical section 55, and the rear end of the horizontal section 54 (the rear end as shown in Figure 3) is formed as At the three ends 51, one end of the vertical section 55 (the lower end as shown in FIG. 3) communicates with the front end of the horizontal section 54 (the front end as shown in FIG. 3), and the other end of the vertical section 55 (shown in FIG. 3). The upper end) is formed as a flue outlet 12. Thereby, the structure and processing technology of the transition section 5 can be simplified, thereby simplifying the structure and processing technology of the flue assembly 100, saving production cycle and reducing production cost.

Further, as shown in FIGS. 1 and 3, a smooth transition between the vertical section 55 and the horizontal section 54 is achieved. Thereby, the inner wall of the transition section 5 can be made more rounded, and when the flue gas flows through the transition section 5, the pressure loss of the transition section 5 can be reduced, and the aerodynamic noise of the flue gas can be reduced.

In some embodiments of the present invention, as shown in FIGS. 1-3, the transition section 5 is provided with a smoke temperature probe interface 53, and a temperature sensor is provided at the smoke temperature probe interface 53 to monitor the temperature of the smoke.

In some embodiments of the invention, the flue assembly 100 can be a stainless steel piece, a PP (polypropylene) plastic piece, a PPS (polyphenylene sulfide) plastic piece, or a cast aluminum piece.

The flue assembly 100 of a water heater in accordance with one embodiment of the present invention is described below with reference to FIGS. 1-3. The following description is intended to be illustrative of the invention and is not to be construed as limiting. Wherein the flue assembly 100 defines a passage 1 for the flow of flue gas, the passage 1 having a flue inlet 11 and a flue outlet 12.

As shown in FIGS. 1-3, the passage 1 includes a main body section 3, a constricted section 4, a bent section 2, and a transition section 5.

Specifically, the main body section 3 is formed as a square pipe, and the lower end of the main body section 3 communicates with the flue inlet 11 in a cross section perpendicular to the flow direction of the flue gas, that is, in a cross section in the up and down direction, the main body section 3 The cross-sectional area is S3. A bent section 2 is provided at a position of the main body section 3 near the flue inlet 11 . The bent section 2 has a square cross section, and the bent section 2 is bent toward one side of the passage 1 (the front side as shown in FIG. 3). Folded, the flue inlet 11 is formed at the free end of the bend section 2 (the front end as shown in Figure 3), and the flue inlet 11 can be connected to the hood at the bottom of the water heater. Thereby, the connection of the flue assembly 100 to the water heater or the fireplace is facilitated, and at the same time, the structure of the water heater or the fireplace can be made more compact and reasonable. As shown in FIGS. 1 and 2, the flue inlet 11 is provided with a flange 21 extending in the circumferential direction thereof, and the flange 21 is provided with a mounting portion 23 for connection with a water heater or the like. The intermediate portion of the flue inlet 11 is further provided with a connecting rib 22, and the connecting rib 22 is provided with a mounting portion 23 for facilitating the connection of the flue assembly 100 on the one hand and strengthening the joint strength of the flue assembly 100 on the other hand.

The constricted section 4 has a first end 41 and a second end 42. The first end 41 communicates with the upper end of the main body section 3, and the second end 42 communicates with the flue outlet 12. The first end 41 has a width W1 and a second end 42. The width is W2, and the cross-sectional area of the first end 41 is S1 and the cross-section of the second end 42 in a cross section perpendicular to the flow direction of the flue gas, that is, in a cross section in the up and down direction. The cross-sectional area is S2, which satisfies, W1>W2, and S1=S2=S3. Among them, W1 ≤ 40cm, W2 ≥ 6cm. In addition, in the direction from the first end 41 to the second end 42, the cross-sectional area of the constricted section 4 remains unchanged, the width of the constricted section 4 gradually decreases, and the left side wall of the constricted section 4 and the main section 3 The left side wall remains flush, and the right side wall of the constricted section 4 is inclined toward the left side wall in the direction from the first end 41 to the second end 42. Thereby, the structure of the flue assembly 100 can be simplified and made to satisfy the structure of the water heater or the fireplace, etc., and at the same time, the aerodynamic noise of the flue assembly 100 can be reduced, and the pressure loss of the flue assembly 100 can be reduced, and the water heater or the wall hanging can be improved. The performance of the furnace.

In addition, as shown in FIG. 3, the main body section 3 has a first inner bottom wall 31 formed in a plane, and the constricted section 4 has a second inner bottom wall 43 formed in a plane, a first inner bottom wall 31 and a second inner bottom wall. 43 is connected, and the first inner bottom wall 31 and the second inner bottom wall 43 are in the same plane. Thereby, the positioning and processing of the flue assembly 100 is facilitated, the production cycle is saved, and the production cost is reduced.

The transition section 5 has a third end 51 and a fourth end 52. The third end 51 is in communication with the second end 42 and the third end 51 is connected to the top wall 44 of the constricted section 4. The third end 51 has a square cross section. The fourth end 52 is formed as a flue outlet 12, the cross section of which is formed in a circular shape, and the flue outlet 12 can be connected to the flue pipe. Wherein, the transition section 5 includes a horizontal section 54 and a vertical section 55, the rear end of the horizontal section 54 is formed as a third end 51, the lower end of the vertical section 55 is in communication with the front end of the horizontal section 54, and the vertical section 55 and the horizontal section 54 is smoothly transitioned by a bend 56, and the upper end of the vertical section 55 is formed as a flue outlet 12. Therefore, not only the structure of the flue assembly 100 can meet the structural requirements of the water heater or the fireplace, but also the structure of the flue assembly 100 and the water heater or the fireplace can be prevented, and the compactness and rationality of the structure such as the water heater or the fireplace can be ensured. . At the same time, the structure of the transition section 5 can be simplified, the pressure loss of the flue gas flowing through the transition section 5 is reduced, the aerodynamic noise of the flue gas is reduced, and the performance of the water heater or the fireplace is improved.

As shown in FIG. 1 to FIG. 3, the transition section 5 is provided with a smoke temperature probe interface 53, and a temperature sensor is provided at the smoke temperature probe interface 53 to monitor the temperature of the smoke.

According to the flue assembly 100 of the water heater according to the embodiment of the present invention, after the flue gas enters the passage 1, the bending section 2, the main body section 3, the constricted section 4 and the transition section 5 are sequentially passed through, and the cross section of the passage 1 is gradually increased from square to circular. Finally, it is discharged through the smoke pipe to avoid the high noise level and large pressure loss caused by the integral transition.

A water heater according to an embodiment of the invention includes a flue assembly 100 of the above described water heater.

A water heater according to an embodiment of the present invention, by arranging the flue assembly 100 as the main body section 3, the constricted section 4 and the transition section 5, and making the width of the first end 41 of the constricted section 4 larger than the width of the second end 42, first The cross-sectional area of the end 41 is equal to the cross-sectional area of the second end 42 while the third section of the transition section 5 is in communication with the top wall 44 of the constricted section 4, which simplifies the structure of the flue assembly 100 and reduces the flue assembly 100. Pneumatic noise and reduced pressure loss of the flue assembly 100.

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 this specification, the schematic representation of the above terms does not necessarily require a needle The same is true for 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. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.

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 flue assembly for a water heater, characterized in that the flue assembly defines a passage for the flow of flue gas, the passage having a flue inlet and a flue outlet, the passage comprising:

a body segment, one end of the body segment is in communication with the flue inlet;

a constricted section having a first end and a second end, the first end being in communication with the other end of the body section, the second end being in communication with the flue outlet, the first end The width is W1, the width of the second end is W2, and the cross-sectional area of the first end is S1 and the cross-sectional area of the second end is S2 in a cross section perpendicular to the flow direction of the flue gas. Wherein said W1 > said W2, said S1 = said S2; and

a transition section having a third end and a fourth end, the third end being in communication with the constricted section and the third end being coupled to a top wall of the constricted section, the flue outlet being disposed The fourth end.
A flue assembly for a water heater according to claim 1 wherein said W1 ≤ 40 cm.
A flue assembly for a water heater according to claim 1 or 2, wherein said W2 ≥ 6 cm.
A flue assembly for a water heater according to any one of claims 1 to 3, wherein said main body section has a cross-sectional area of S3 in a cross section perpendicular to a direction of flow of said flue gas , S3 = the S1.
A flue assembly for a water heater according to any one of claims 1 to 4, wherein the body section has a first inner bottom wall formed in a plane, the constricted section having a second inner surface formed into a plane a bottom wall, the first inner bottom wall is coupled to the second inner bottom wall, and the first inner bottom wall and the second inner bottom wall are in the same plane.
A flue assembly for a water heater according to any one of claims 1 to 5, wherein a bent portion is provided at a position of the main body section adjacent to the flue inlet, the bent section facing One side of the passage is bent, and the flue inlet is formed on the free end of the bent section.
A flue assembly for a water heater according to any one of claims 1 to 6, wherein the width of the constricted section gradually decreases in a direction from the first end to the second end.
A flue assembly for a water heater according to any of claims 1-7, wherein the transition section comprises:

a horizontal section, a rear end of the horizontal section is formed as the third end; and

A vertical section, one end of the vertical section is in communication with a front end of the horizontal section, and the other end of the vertical section is formed as the flue outlet.
A flue assembly for a water heater according to claim 8 wherein a smooth transition between said vertical section and said horizontal section is achieved.
A water heater characterized by comprising a flue assembly of a water heater according to any of claims 1-9.