CN219199522U - Sectional air valve and gas water heating equipment comprising same - Google Patents

Abstract

The utility model provides a sectional air valve and gas water heating equipment comprising the same. The sectional air valve comprises a valve body, a main stop valve, a first stop valve and a second stop valve. The valve body is provided with an air inlet channel, a main air channel communicated with the air inlet channel, and a first air outlet channel and a second air outlet channel communicated with the main air channel. The inlet defines a vertically extending main central axis having a vertically downward opening. The first outlet channel defines a first central axis and the second outlet channel defines a second central axis. Wherein at least one of the first and second outlet channels has an upward opening and the first and second central axes define an included angle between 0 and 90 degrees. Through this kind of structure for the connection of segmentation pneumatic valve and branch gas frame is more convenient, also becomes compacter on the structure of segmentation pneumatic valve, is convenient for arrange in a flexible way inside the equipment.

Description

Sectional air valve and gas water heating equipment comprising same

Technical Field

The present disclosure relates to gas valves, and more particularly, to a segmented gas valve suitable for use in gas water heating apparatus.

The disclosure also relates to a gas water heating device employing the segmented gas valve.

Background

Gas water heating plants generally comprise a gas water heater and a gas boiler. Wherein, be provided with gas distribution system, combustor, heat exchanger, pipe-line system in the gas heater. The gas distribution system is used for supplying the gas required for combustion of the burner and generally comprises a gas valve assembly and a gas distribution frame. The burner often includes a plurality of fire grate segments positioned side by side, each having a gas-air mixing channel within which gas and air can be mixed and transferred to fire holes located at the top of the fire grate segments for combustion and heat generation within the combustion chamber. The heat exchanger is mounted in the upper part of the burner, typically a fin-and-tube heat exchanger, i.e. a heat exchanger housing is provided with a plurality of fins through which a heat absorbing water pipe is routed. The heat generated by the combustion of the burner is absorbed by the fins and further transferred to the water flowing through the heat absorbing water pipe, and then the heated water can be output through the pipeline system for supplying the domestic hot water for drinking, bathing and the like. And the gas boiler can be used for providing domestic hot water and also can be communicated with a radiator arranged indoors to provide central heating.

Most of the existing burners can be controlled to perform multi-stage combustion, as shown in the utility model patent CN207945810U filed and published by the applicant, the air outlet of the existing burners is controlled by an air valve, and an electromagnetic valve capable of controlling an air vent is arranged on an air distributing frame, so that one or more of a plurality of air channels can be selectively and simultaneously ventilated, the power adjusting range of the water heater is further enlarged, and the constant temperature effect of the water heater is enlarged. However, the air valve disclosed in the patent can only be combined with a specific air distribution frame, and the assembly formed by the air valve occupies a large space in the equipment, so that arrangement of parts in the equipment is difficult, and the assembly cannot be applied to different models.

Disclosure of Invention

It is an object of the present disclosure to provide a segmented gas valve having an improved construction, thereby facilitating spatial arrangement within a gas water heating apparatus employing the same.

The utility model also aims to provide gas water heating equipment adopting the segmented air valve.

A first aspect of an embodiment of the present disclosure provides a segmented gas valve that includes a valve body, a main shut-off valve, a first shut-off valve, and a second shut-off valve. The valve body is provided with an air inlet channel, a main air channel communicated with the air inlet channel, and a first air outlet channel and a second air outlet channel communicated with the main air channel. The inlet defines a vertically extending main central axis having a vertically downward opening. The first outlet channel defines a first central axis and the second outlet channel defines a second central axis. Wherein at least one of the first and second outlet channels has an upward opening and the first and second central axes define an included angle between 0 and 90 degrees. The main cut-off valve is disposed between the intake duct and the main air duct for communicating or blocking a gas passage between the intake duct and the main air duct. The first stop valve is arranged between the main air passage and the first air outlet passage and is used for communicating or blocking a fuel gas passage between the main air passage and the first air outlet passage. The second stop valve is arranged between the main air channel and the second air outlet channel and is used for communicating or blocking a fuel gas passage between the main air channel and the second air outlet channel.

In some embodiments, at least one of the first and second gas outlet channels has a vertically upward opening.

In some embodiments, at least one of the first and second gas outlet channels has an opening that is diagonally upward.

In some embodiments, the first central axis and the second central axis extend in parallel in a vertical direction.

In some embodiments, the first central axis and the second central axis extend perpendicular to each other.

In some embodiments, the first central axis and the second central axis are in the same plane.

In some embodiments, the first central axis and the second central axis define a plane that is parallel to or in the same plane as the main central axis.

In some embodiments, the segmented gas valve further comprises a proportional valve mounted to the valve body for controlling the proportion and pressure of the gas in the main gas passage.

A second aspect of the disclosed embodiments also provides a gas water heating apparatus comprising a housing, a burner, a heat exchanger that absorbs heat generated by the burner and transfers the heat to a water stream passing therethrough, the segmented gas valve described above, and a gas separation shelf connected between the segmented gas valve and the burner.

In some embodiments, the gas separation frame is disposed in the housing in a manner of extending transversely, at least two gas separation chambers are disposed therein, and the first and second gas outlet channels are respectively communicated with the at least two gas separation chambers through bendable connecting pipes.

The technical solution provided by one or more embodiments of the present disclosure may include the following beneficial effects: because at least one of the first air outlet channel and the second air outlet channel is provided with an upward opening, and an included angle between 0 degree and 90 degrees is defined between the first central axis and the second central axis, the connection between the sectional air valve and the air dividing frame is more convenient, the sectional air valve is more compact in structure, and the flexible arrangement in the equipment is facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, and it is apparent that the drawings related to the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic plan view of a gas water heating apparatus of the present disclosure in one embodiment, with a front cover plate of the apparatus removed to show its internal structure;

FIG. 2 is a schematic perspective view of a segment valve of the gas water heating apparatus shown in FIG. 1;

FIG. 3 is a schematic cross-sectional view of the segmented gas valve shown in FIG. 2;

FIG. 4 is a schematic cross-sectional view of another embodiment of a segmented gas valve of the present disclosure;

FIG. 5 is a schematic cross-sectional view of a further embodiment of a segmented gas valve of the present disclosure.

Detailed Description

The embodiments shown in the drawings will be described in detail below. These embodiments do not represent all embodiments consistent with the present disclosure, and structural, methodological, or functional transformations of one of ordinary skill in the art based on these embodiments are included within the scope of the appended claims.

The gas water heating device is a gas water heater which uses combustible gas as fuel, such as natural gas, city gas, liquefied gas, biogas and the like, and provides heat by combusting the combustible gas to meet the living demands of users, for example, a gas water heater which provides living hot water, a gas boiler which can simultaneously provide living hot water and heating demands, and the like.

A specific embodiment of a gas water heating apparatus is shown in fig. 1. The gas water heating apparatus 100 includes a housing 10, a burner 20, a heat exchanger 30, a gas valve 40, a gas separation frame 70, a hood, a fan 80, a wind pressure switch 90, and the like, which are accommodated in the housing 10. A partition 11 is provided in the housing 10 to vertically partition a space in the housing, wherein the gas valve 40 is located below the partition 11, and the burner 20, the heat exchanger 30, the gas separation frame 70, and the like are located above the partition 11.

The burner 20 includes a burner housing within which a burner unit is typically disposed, such as a plurality of fire grate segments (not shown) disposed side-by-side. Each fire grate plate is provided with a gas-air mixing channel, and the gas and the primary air conveyed by the gas conveying pipeline are mixed in the mixing channel and are transmitted to fire holes at the top of the fire grate plate to burn and generate heat. The construction and arrangement of fire grate segments is well known to those skilled in the art and therefore, the applicant will not be described in detail herein.

The heat exchanger 30 is installed at an upper portion of the burner 20. In some embodiments, the heat exchanger may employ a fin and tube heat exchanger, i.e., a heat exchanger housing having a plurality of fins disposed therein through which a heat absorbing water pipe (not shown) passes in a serpentine path. The gas-air mixture burns in the combustion chamber formed by the jointing of the burner shell and the heat exchanger shell, the generated heat is absorbed by the fins and further transferred to the water flowing through the heat absorption water pipe, and the heated water is transferred to the water pipe of the domestic water through the water outlet pipe, so that the domestic water for drinking, bathing and the like is provided for users. The hood is fastened to the top of the heat exchanger 30 to collect the smoke (exhaust gas containing carbon monoxide, nitrogen oxides, etc.) generated from the burner and discharge it to the outside.

In some embodiments, a blower 80 is disposed beside the hood for promoting gas convection. The fan may be a centrifugal fan, an axial flow fan, or a mixed flow fan, etc. The air pressure switch 90 typically has a negative pressure sensing port and a positive pressure sensing port that are in air communication with a sampling tube on the blower to detect if the blower is exhausting smoke properly and to trigger the microswitch to stop the operation of the apparatus when an abnormality occurs.

As shown with reference to fig. 2 and 3 in combination, the segmented gas valve 40 includes a valve body having a gas inlet 41, a main gas passage 42 in communication with the gas inlet, and first and second gas outlet passages 431 and 432 in communication with the main gas passage. A main shut-off valve 44, which may take the form of a solenoid valve, is provided at the junction of the inlet duct 41 and the main duct 42, and a valve stem 441 thereof is moved in a lateral direction for communicating or shutting off the gas passage between the inlet duct 41 and the main duct 42, thereby allowing or preventing the gas from entering the main duct. A proportional valve 45 is mounted to the valve body for controlling the proportion and pressure of the fuel gas in the main gas passage 42. A first shut-off valve 46 and a second shut-off valve 47 are provided in the upper part of the valve body, which may each take the form of solenoid valves.

The air intake duct 41 defines a vertically extending main central axis A1 having a vertically downward opening. The first outlet channel 431 defines a first central axis B1 and the second outlet channel 432 defines a second central axis C1. At least one of the first and second outlet channels 431, 432 has an upward opening, and the first and second central axes B1, C1 define an included angle between 0 and 90 degrees. As shown in fig. 3, in the present embodiment, the first outlet channel 431 and the second outlet channel 432 each have an opening that is vertically upward, and the included angle between the first central axis B1 and the second central axis C1 is 0 degrees, that is, both extend in parallel in the vertical direction. The valve stem 461 of the first shut-off valve moves horizontally for communicating or blocking the gas passage between the main gas passage 42 and the first gas outlet passage 431, thereby allowing or preventing the gas from entering the first gas outlet passage 431; the valve stem 471 of the second shut-off valve moves horizontally for communicating or blocking the gas passage between the primary gas channel 42 and the second gas outlet channel 432; allowing or preventing gas from entering the second gas outlet channel 432.

With reference to fig. 1, the air separation frame 70 extends in a transverse direction, and at least two air separation chambers (not shown) and a plurality of nozzles (not shown) communicating with each air separation chamber are provided therein. The nozzles are in one-to-one correspondence with air inlets of the fire bars of the burner so as to supply fuel gas to the fire bars. The first air outlet channel 431 and the second air outlet channel 432 are respectively communicated with the at least two air separation chambers through connecting pipes 71 and 72. The connecting pipe can be flexible pipe, such as corrugated pipe, or other bendable pipe, so that flexible connection is realized between the gas dividing frame 50 and the sectional air valve 40, and flexible arrangement of the two in the shell 10 is facilitated. The connection pipes 71, 72 extend through the partition 11 to be connected with the segment gas valve 40 and the gas separation frame 50, respectively. The segment gas valve 40 is operable by selectively controlling either the first shut-off valve 46 or the second shut-off valve 47 to open either the first outlet channel 431 or the second outlet channel 432 to cause the burner to burn at a selected power, or controlling both the first and second shut-off valves 46, 47 to open to enable the burner to burn at full power.

Fig. 4 shows another embodiment of a segmented gas valve. In this embodiment, the segment gas valve 50 also includes a gas inlet 51, a main gas passage 52 communicating with the gas inlet, a first gas outlet passage 531 and a second gas outlet passage 532 communicating with the main gas passage, a main stop valve 54 having a valve stem 541, a proportional valve 55, a first stop valve 56 having a valve stem 561, and a second stop valve 57 having a valve stem 571. Since the construction of the segmented air valve 50 and the operation principle of the constituent parts are basically the same as those of the above embodiment, the applicant will not be described in detail herein. The air intake duct 51 defines a vertically extending main central axis A2 having a vertically downward opening. The first outlet channel 531 defines a first central axis B2 and the second outlet channel 532 defines a second central axis C2. In the present embodiment, the first outlet channel 531 has an opening vertically upwards, and the included angle between the first central axis B2 and the second central axis C2 is 90 degrees, that is, the two extend perpendicular to each other, so that the second outlet channel 532 has an opening arranged horizontally.

Fig. 5 shows a further embodiment of a segmented gas valve. In this embodiment, the segment gas valve 60 also includes a gas inlet 61, a main gas passage 62 communicating with the gas inlet, a first gas outlet 631 and a second gas outlet 632 communicating with the main gas passage, a main shut-off valve 64 having a valve stem 641, a proportional valve 65, a first shut-off valve 66 having a valve stem 661, and a second shut-off valve 67 having a valve stem 671. Since the construction of the segmented air valve 60 and the operation principle of the constituent parts are basically the same as those of the above embodiment, the applicant will not be described in detail herein. The inlet channel 61 defines a vertically extending main central axis A3 having a vertically downward opening. The first outlet channel 631 defines a first central axis B3 and the second outlet channel 632 defines a second central axis C3. In this embodiment, the first air outlet channel 631 and the second air outlet channel 632 each have an opening that is inclined upward, and the included angle between the first central axis B3 and the second central axis C3 is an acute angle, such as 30 degrees.

Because at least one of the first air outlet channel and the second air outlet channel is provided with an upward opening, and an included angle between 0 degree and 90 degrees is defined between the first central axis and the second central axis, the connection between the sectional air valve and the air dividing frame is more convenient, the sectional air valve is more compact in structure, and the flexible arrangement in the equipment is facilitated. In some embodiments, the first central axis of the first outlet channel and the second central axis of the second outlet channel are in the same plane, and preferably, the plane defined by the first central axis and the second central axis is parallel to or in the same plane as the main central axis of the inlet channel, by which the sectional air valve as a whole tends to be flattened, thereby facilitating the size reduction of the device housing in the thickness direction, and further facilitating the miniaturization of the device overall size.

In the description of the above embodiments of the present disclosure, the positional or positional relationship indicated by "longitudinal", "transverse", "axial", "radial", "circumferential", "horizontal", "vertical", "clockwise", "counterclockwise", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", etc. is based on the positional or positional relationship shown in the drawings, and is merely for convenience of description and simplification of the description, and does not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the utility model.

In the above disclosure, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an indication of the number of technical features being indicated. Thus, a feature defining "a first", "a second", etc. can explicitly or implicitly include at least one such feature. In the above description, the meaning of "several", "a plurality" and the like means at least two, such as two, three, etc., unless specifically defined otherwise.

In the above disclosure, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or in communication with each other, or in interaction with each other, unless otherwise specifically defined. It will be apparent to those skilled in the art that the specific meaning of the terms described above in the present utility model may be understood in a specific manner.

In the above disclosure, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be a direct contact of the first feature with the second feature, or an indirect contact of the first and second features through an intervening medium. Also, a first feature "above," "over," "above" a second feature may be that the first feature is directly above or obliquely above the second feature, or simply that the first feature is higher in level than the second feature. The first feature being "under", "below", "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to specific embodiments, and that the embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

Claims (10)

1. The segmentation pneumatic valve, its characterized in that: the sectional air valve comprises

The valve body is provided with an air inlet channel, a main air channel communicated with the air inlet channel, and a first air outlet channel and a second air outlet channel communicated with the main air channel; the inlet duct defines a vertically extending main central axis having a vertically downward opening; the first outlet channel defines a first central axis and the second outlet channel defines a second central axis; wherein at least one of the first and second outlet channels has an upward opening and the first and second central axes define an included angle between 0 and 90 degrees;

a main cut-off valve provided between the air inlet and the main air passage for communicating or cutting off a gas passage between the air inlet and the main air passage;

the first stop valve is arranged between the main air channel and the first air outlet channel and is used for communicating or blocking a fuel gas channel between the main air channel and the first air outlet channel;

and the second stop valve is arranged between the main air channel and the second air outlet channel and is used for communicating or blocking a fuel gas passage between the main air channel and the second air outlet channel.

2. The segmented gas valve as set forth in claim 1, wherein: at least one of the first and second gas outlet channels has a vertically upward opening.

3. The segmented gas valve as set forth in claim 1, wherein: at least one of the first and second gas outlet channels has an opening that is angled upward.

4. The segmented gas valve as set forth in claim 1, wherein: the first central axis and the second central axis extend in parallel in the vertical direction.

5. The segmented gas valve as set forth in claim 1, wherein: the first central axis and the second central axis extend perpendicular to each other.

6. The segmented gas valve as set forth in claim 1, wherein: the first central axis and the second central axis are in the same plane.

7. The segmented gas valve as set forth in claim 6, wherein: the plane defined by the first central axis and the second central axis is parallel to or in the same plane as the main central axis.

8. The segmented gas valve as set forth in claim 1, wherein: the sectional air valve also comprises a proportional valve which is arranged on the valve body and used for controlling the proportion and the pressure of the fuel gas in the main air passage.

9. A gas water heating apparatus, characterized in that: the gas-fired water heating apparatus comprising a housing, a burner, a heat exchanger that absorbs heat generated by the burner and transfers the heat to a water stream passing therethrough, a segmented gas valve as claimed in any one of claims 1 to 8, and a gas separation frame connected between the segmented gas valve and the burner.

10. Gas water heating apparatus according to claim 9, characterized in that: the gas distribution frame is arranged in the shell in a transverse extending mode, at least two gas distribution chambers are arranged in the gas distribution frame, and the first gas outlet channel and the second gas outlet channel are communicated with the at least two gas distribution chambers through bendable connecting pipes respectively.

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