CN217423647U

CN217423647U - Wall-mounted furnace

Info

Publication number: CN217423647U
Application number: CN202220682942.2U
Authority: CN
Inventors: 卢宇轩; 潘耀文; 胡杰; 邱振春; 陈均滢
Original assignee: Guangdong Wanhe Thermal Energy Technology Co Ltd
Current assignee: Guangdong Wanhe Thermal Energy Technology Co Ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-09-13
Anticipated expiration: 2032-03-25

Abstract

The utility model relates to a wall-mounted furnace, which comprises a shell provided with a holding cavity, a Venturi wind pressure sampling device and a wind pressure detecting element, wherein the top of the shell is provided with an air inlet communicated with the holding cavity; the Venturi air pressure sampling device is arranged on the peripheral edge of the air inlet and comprises a Venturi tube, an air inlet pressure taking tube and a throat pressure taking tube, wherein the Venturi tube is provided with an air inlet channel, a throat and an air outlet channel which are sequentially communicated along the air flow direction, the opening of the air inlet channel faces the air inlet, the air inlet pressure taking tube is communicated with the air inlet channel, and the throat pressure taking tube is communicated with the throat; the wind pressure detecting elements respectively detect the wind pressure in the two pressure taking pipes. Through the setting, the pressure taking position is far away from the fan impeller, the influence on the accuracy of the pressure taking of the air pressure caused by the blockage of the smoke pipe and the large smoke humidity is avoided, the flow of the air inlet of the wall-mounted furnace is relatively stable, and the air pressure sampling is more accurate. Meanwhile, the air inlet is low in temperature and relative humidity of air, so that condensed water is reduced, and the phenomenon of failure of internal components is avoided.

Description

Wall-mounted furnace

Technical Field

The utility model relates to a hanging stove especially relates to a hanging stove.

Background

The wall-mounted boiler is a gas wall-mounted boiler, is called as a gas wall-mounted heating boiler for short, is a water heater taking natural gas as energy, and has various safety protection measures such as anti-freezing protection, anti-dry heating protection, accidental flameout protection, over-temperature protection, water pump anti-blocking protection and the like. The wind pressure sampling point of conventional hanging stove is placed between fan spiral case and fan export usually, and the hanging stove judges whether machine operating condition is good according to the wind pressure size of sampling point, when the wind pressure value is lower, just can flameout shutdown protection, avoids the machine to move at unfavorable operating mode.

In present wind pressure sampling mode, the wind pressure size that the wind pressure sampling point was got is not proportional relation with the flow, especially when blockking up the tobacco pipe, and flow variation is great this moment, and the wind pressure changes lessly, and the complete machine is good to be judged whether machine operating condition is good, influences the life of device. And the sampling point is at the fan air outlet promptly machine exhaust port, and flue gas temperature humidity is great, produces the comdenstion water easily in the wind pressure connecting tube and gets into inside the machine, leads to the components and parts malfunctioning.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a hanging stove, it has solved prior art wind pressure sample effectively and has placed the position not good, and wind pressure sample interference factor more leads to getting and presses the unsafe problem, and it is few to have interference factor, and the wind pressure is got and is pressed the accuracy, can not produce the comdenstion water, increases device life's effect. The technical problem is solved by the following technical scheme:

a wall hanging stove comprising:

the air conditioner comprises a shell, a fan and a fan, wherein the shell is provided with an accommodating cavity, and the top of the shell is provided with an air inlet communicated with the accommodating cavity;

the venturi wind pressure sampling device is arranged on the periphery of the air inlet and comprises a Venturi tube, an air inlet pressure taking tube and a throat pressure taking tube, wherein an air inlet channel, a throat and an air outlet channel which are sequentially communicated along the air flow direction are arranged in the Venturi tube, the opening of the air inlet channel faces the air inlet, the air inlet pressure taking tube is communicated with the air inlet channel, and the throat pressure taking tube is communicated with the throat;

and the wind pressure detecting element is used for respectively detecting the wind pressure in the air inlet pressure taking pipe and the throat pressure taking pipe.

Compared with the background art, the wall-mounted furnace has the advantages that: in this scheme, through setting up near the air intake of hanging stove with venturi wind pressure sampling device, get and press the position and kept away from fan wheel, avoided the tobacco pipe to block up, flue gas humidity is big to bring the influence to the accuracy that the wind pressure was got to the pressure, and the flow relatively stable of the air intake department of hanging stove moreover, the wind pressure sample is more accurate, and then can be to carrying out more accurate judgement and adjustment of device operating condition. Meanwhile, the temperature and the relative humidity of the air near the air inlet are lower, the internal connecting pipeline cannot produce condensed water, and the phenomenon that internal components are out of order is avoided.

Specifically, when the air pressure sampling device is used, the venturi air pressure sampling device can be arranged near an air inlet of the wall-mounted furnace, one end of the air inlet channel faces the air inlet of the wall-mounted furnace, one end of the air outlet channel faces the inside of the wall-mounted furnace, then the pressure difference at the moment is detected through the matching of the air inlet pressure taking pipe, the throat pressure taking pipe and the air pressure detecting element, and finally the pressure difference is converted to obtain the flow so as to accurately judge and adjust the running condition of the wall-mounted furnace. This scheme has both avoided the tobacco pipe to block up, flue gas humidity big accuracy of getting the pressure to the wind pressure brings the influence through above-mentioned venturi wind pressure sampling device's position setting, and the flow relatively stable of the air intake department of hanging stove moreover, and the wind pressure sample is more accurate, has improved the accuracy of judging and adjusting the device operating condition. Set up in air intake department simultaneously, the temperature and the relative humidity of air are lower, and internal connection pipeline can not produce the comdenstion water, avoids taking place the malfunctioning phenomenon of inside components and parts.

In one embodiment, the air inlet channel comprises a straight section and a contraction section connected with the throat, and the contraction section is a hollow circular truncated cone section and gradually contracts along a direction back to the air inlet channel.

In one embodiment, the air outlet channel is a hollow circular truncated cone pipe section and gradually expands along a direction back to the throat.

In one embodiment, the air inlet channel, the throat and the air outlet channel are communicated in sequence along the same axis.

In one embodiment, the venturi tube is further provided with a fixing portion for fixing to the housing.

In one embodiment, the intake air pressure tapping pipe and/or the throat pressure tapping pipe are connected with the two detection ports of the wind pressure detection element through hoses.

In one embodiment, the air inlet pressure tapping pipe and the throat pressure tapping pipe are both arranged in a bent L shape.

In one embodiment, the bending parts of the inlet air pressure tapping pipe and the throat pressure tapping pipe are in arc transition.

In one embodiment, the wind pressure detecting element is a wind pressure sensor or a wind pressure switch, and the wind pressure detecting element is fixed on the top of the accommodating cavity.

Drawings

FIG. 1 is a schematic view of a wall-hanging stove installation;

fig. 2 is a front view of the wall-hanging stove device of fig. 1;

FIG. 3 is a schematic structural view of a venturi;

figure 4 is a cross-sectional view of the venturi.

Description of reference numerals:

10. a venturi tube; 101. a straight-through section; 102. a contraction section; 103. a throat; 104. an air outlet channel; 105. a fixed part; 20. an air inlet pressure taking pipe; 30. a throat pressure tapping pipe; 40. a wind pressure detecting element; 50. a hose; 60. a housing; 601. and an air inlet.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, when referring to the orientation or positional relationship indicated in the drawings, are used for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be considered as limiting the present application.

In the description of the present application, it is to be understood that the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 1-4, the present invention provides a wall-hanging stove, which includes a housing 60 having an accommodating chamber, a venturi wind pressure sampling device and a wind pressure detecting element 40 disposed at the periphery of the air inlet 601, the top of the housing 60 is provided with an air inlet 601 communicated with the accommodating chamber; the Venturi wind pressure sampling device comprises a Venturi tube 10, an air inlet pressure sampling tube 20 and a throat pressure sampling tube 30, wherein an air inlet channel, a throat 103 and an air outlet channel 104 which are sequentially communicated along the air flow direction are arranged in the Venturi tube 10, the opening of the air inlet channel faces to an air inlet 601, the air inlet pressure sampling tube 20 is communicated with the air inlet channel, and the throat pressure sampling tube 30 is communicated with the throat 103; the wind pressure detecting element 40 is used for detecting the wind pressure in the intake air pressure sampling pipe 20 and the throat pressure sampling pipe 30 respectively. In this scheme, through setting up near the air intake 601 of hanging stove with venturi wind pressure sampling device, get and press the position and kept away from fan wheel, avoided the tobacco pipe to block up, flue gas humidity is big to bring the influence to the accuracy that the wind pressure got the pressure, and the flow relatively stable of the air intake 601 department of hanging stove moreover, the wind pressure sample is more accurate, and then can be to carrying out more accurate judgement and adjustment of device operating condition. Meanwhile, the air inlet 601 has low temperature and relative humidity of air, and the internal connecting pipeline cannot produce condensed water, so that the phenomenon of failure of internal components is avoided.

Specifically, when the wall-mounted furnace is used, as shown in fig. 2, the venturi wind pressure sampling device may be disposed near the air inlet 601 of the wall-mounted furnace, one end of the air inlet channel faces the air inlet 601 of the wall-mounted furnace, one end of the air outlet channel 104 faces the inside of the wall-mounted furnace, then the pressure difference is detected by the cooperation of the air inlet pressure tapping pipe 20, the throat pressure tapping pipe 30 and the wind pressure detecting element 40, and finally the flow rate is obtained through conversion, so that the operation condition of the wall-mounted furnace can be accurately determined and adjusted. This scheme has both avoided the tobacco pipe to block up, flue gas humidity is big to the wind pressure accuracy of getting the pressure and has brought the influence through above-mentioned venturi wind pressure sampling device's position setting, and the flow relatively stable of the air intake 601 department of hanging stove moreover, and the wind pressure sample is more accurate, has improved the accuracy of judging and adjusting the device operating condition. Meanwhile, the air inlet 601 is formed, the temperature and the relative humidity of air are low, the internal connecting pipeline cannot produce condensed water, and the phenomenon that internal components fail is avoided.

In this embodiment, the air inlet channel includes a straight section 101 and a contracting section 102 connected to the throat 103, and the contracting section 102 is a hollow circular truncated cone section and gradually contracts in a direction away from the air inlet channel. Through the setting of above-mentioned through section 101, can prolong or shorten through section 101's length according to the installation condition of reality, and then prolong or shorten inlet air channel's stroke to this makes things convenient for the connection of air inlet pressure sampling pipe 20 and avoids the interference of other components and parts inside the hanging stove. The contraction section 102 enables the direct connection between the straight-through section 101 and the throat 103 to be smoother, the air flowing through the straight-through section 101 is transited to the throat 103 and cannot be greatly reduced by wind, and the accuracy of follow-up wind pressure detection is ensured.

In this embodiment, the air outlet channel 104 is a hollow circular truncated cone pipe section and gradually expands along a direction back to the throat 103. Through the shape setting, the detection of the air pressure difference between the air inlet channel and the throat 103 is more accurate, the conversion of the subsequent flow value is more accurate, and the judgment and the adjustment of the self operation condition of the device can be better finally.

In this embodiment, the air inlet channel, the throat 103 and the air outlet channel 104 are sequentially communicated along the same axis. Through the arrangement, gas can smoothly flow from one end of the Venturi tube 10 to the other end, and cannot be blocked by bending or other sections of inner walls, so that the resistance of the gas is reduced to a certain extent, and the accuracy of detecting the wind pressure difference between the air inlet channel and the throat 103 is improved.

In this embodiment, referring to fig. 3, the venturi tube 10 is further provided with a fixing portion 105 for fixing to the wall-hanging furnace casing 60. The specific fixing part 105 is flat and is attached to the inner wall of the wall-mounted furnace, through the arrangement, the contact area between the fixing part 105 and the inner wall is increased, the fixing part and the inner wall can be connected and fixed through screws or bonding and the like, the connection tightness of the fixing part and the inner wall is increased, the Venturi tube 10 is prevented from being separated from the shell 60, meanwhile, the air inlet channel can be directly opposite to the air inlet 601 of the wall-mounted furnace, and the detection accuracy is improved.

In this embodiment, referring to fig. 1, the intake air pressure tapping pipe 20 and/or the throat pressure tapping pipe 30 are connected to two detection ports of the wind pressure detecting element 40 through a hose 50. Through the connection setting of hose 50, can make venturi 10 and wind pressure detection element 40 both's position can adjust according to the installation condition of the inside part of hanging stove for when accomplishing the pressure difference detection, also can adapt to different hanging stove mounted position and adjust, the suitability is stronger.

In this embodiment, referring to fig. 3 to 4, the inlet air pressure sampling pipe 20 and the throat pressure sampling pipe 30 are both arranged in a bent L shape. Wherein the air inlet pressure tapping pipe 20 and the throat pressure tapping pipe 30 are generally the axis of the perpendicular to venturi tube 10 and extend outwards, through the above arrangement, can be in convenient use with the wind pressure detecting element 40 is connected while avoiding other elements, avoiding interfering with other elements.

In combination with the L-shaped arrangement, in the present embodiment, referring to fig. 3 to 4, the bent portions of the intake air pressure sampling pipe 20 and the throat pressure sampling pipe 30 are in arc transition. Through the arc transition arrangement, the abrasion of wind received when passing through the L-shaped pipe is small, the influence of the bent pipe type on wind power is reduced, and the accuracy of pressure difference detection is improved.

In this embodiment, the wind pressure detecting element 40 is a wind pressure sensor or a wind pressure switch, and the wind pressure detecting element 40 is fixed to the top of the accommodating chamber. Through the concrete chooseing for use of the wind pressure detecting element 40, this kind of detection device can realize the detection to the wind pressure difference, detects accurate and detection efficiency height.

In the detailed description of the embodiments, various technical features may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The details of the foregoing embodiments are merely representative of several embodiments of the present invention, which are described in more detail and detail, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A wall hanging stove, comprising:

the air conditioner comprises a shell (60), wherein the shell (60) is provided with an accommodating cavity, and the top of the shell (60) is provided with an air inlet (601) communicated with the accommodating cavity;

the venturi wind pressure sampling device is arranged on the periphery of the air inlet (601), the venturi wind pressure sampling device comprises a venturi tube (10), an air inlet pressure taking tube (20) and a throat pressure taking tube (30), an air inlet channel, a throat (103) and an air outlet channel (104) which are sequentially communicated along the air flow direction are arranged in the venturi tube (10), the opening of the air inlet channel faces towards the air inlet (601), the air inlet pressure taking tube (20) is communicated with the air inlet channel, and the throat pressure taking tube (30) is communicated with the throat (103);

and the wind pressure detection element (40) is used for respectively detecting the wind pressure in the inlet wind pressure taking pipe (20) and the throat pressure taking pipe (30).

2. The wall hanging stove according to claim 1, characterized in that: the air inlet channel comprises a straight section (101) and a contraction section (102) connected with the throat (103), the air inlet pressure tapping pipe (20) is communicated with the straight section (101), and the contraction section (102) is a hollow circular truncated cone pipe section and gradually contracts along a direction back to the air inlet channel.

3. The wall-hanging stove according to claim 1, wherein: the air outlet channel (104) is a hollow circular truncated cone pipe section and gradually expands along the direction back to the throat (103).

4. The wall hanging stove according to claim 1, characterized in that: the air inlet channel, the throat (103) and the air outlet channel (104) are sequentially communicated along the same axis.

5. The wall hanging stove according to claim 1, characterized in that: the venturi tube (10) is further provided with a fixing portion (105) for fixing to the housing (60).

6. The wall-hanging stove according to claim 1, wherein: the air inlet pressure sampling pipe (20) and/or the throat pressure sampling pipe (30) are/is connected with two detection ports of the air pressure detection element (40) through a hose (50).

7. The wall hanging stove according to claim 1, characterized in that: the air inlet pressure tapping pipe (20) and the throat pressure tapping pipe (30) are both arranged in a bent L shape.

8. The wall hanging stove according to claim 7, wherein: the bending parts of the air inlet pressure taking pipe (20) and the throat pressure taking pipe (30) are in arc transition.

9. The wall-hanging stove according to claim 1, wherein: the wind pressure detecting element (40) is a wind pressure sensor or a wind pressure switch, and the wind pressure detecting element (40) is fixed at the top of the accommodating cavity.