CN217636223U - Wind pressure sampling connecting device, assembly of wind pressure sampling connecting device and fan, and gas water heating equipment comprising assembly - Google Patents

Abstract

The utility model provides a wind pressure sample connecting device and with the subassembly of fan and contain the gas hot water equipment of this subassembly. The wind pressure sampling and connecting device is suitable for being connected between the fan and the wind pressure detection device. The connecting device comprises a first connecting pipe, wherein the first connecting pipe is provided with a first transverse part and a first vertical part which is formed by bending the first transverse part and extending upwards. Through this kind of structure, can prevent effectively that the comdenstion water that forms in the fan sampling tube from getting into in the hose of being connected with wind pressure detection device.

Description

Wind pressure sampling connecting device, assembly of wind pressure sampling connecting device and fan, and gas water heating equipment comprising assembly

Technical Field

The utility model relates to a wind pressure sample connecting device especially relates to a connect in order to be used for the connecting device of wind pressure sample between fan and wind pressure detection device.

The utility model discloses still relate to a wind pressure sample connecting device and fan subassembly.

The utility model discloses still relate to a gas hot water system who contains above-mentioned subassembly.

Background

Gas-fired water heating appliances typically include a gas water heater and a gas boiler. Taking a gas water heater as an example, a burner, a heat exchanger, and a piping system are generally disposed therein. The burner often includes a plurality of fire row pieces arranged side by side, each fire row piece has a gas-air mixing channel, and gas and air can be mixed and transmitted in the mixing channel to fire holes positioned at the top of the fire row pieces so as to be combusted in the combustion chamber and generate heat, the generated heat can heat water in the heat exchanger, and then the heated water can be output through a pipeline system so as to meet the supply requirements of domestic hot water for drinking, bathing and the like. The gas boiler can be used for providing domestic hot water and can also be communicated with a radiator arranged indoors to provide a central heating function.

A fan and a smoke hood are also usually installed in the gas water heating equipment. The fan is used for supplying air to the combustor and discharging waste flue gas generated by combustion through the smoke hood. When the equipment works, the fan usually works first, and the ignition action of the equipment can be carried out when the normal work of air supply and smoke exhaust is ensured. At this moment, a wind pressure detection device is needed to ensure the normal operation of the fan, and the gas channel can be closed in time under the condition of unsmooth smoke discharge so as to ensure that the gas does not leak, thereby protecting the personal safety.

Typical wind pressure detecting devices such as wind pressure switches use the static pressure of air to push micro-switches to switch on and off the current. The wind pressure switch has two detection ports, namely a positive pressure detection port and a negative pressure detection port, and the cavity of the wind pressure switch is divided into a positive pressure cavity and a negative pressure cavity. The two cavities are isolated by a skin membrane, and when a pressure source exists, the skin membrane moves to trigger the micro switch so as to achieve the on/off purpose. The existing fan pressure sampling mode is that a hole is directly formed in the side face of a fan shell, a sampling tube radially extends out of the hole, a venturi tube is formed in the part of the sampling tube located in the shell, and the part of the sampling tube located outside the shell is connected to a detection port of a wind pressure switch through a rubber hose. Therefore, pressure difference is formed by the principle of the Venturi tube, so that the membrane drives the microswitch to act to switch on a signal. However, in cold weather, when equipment start, the high temperature flue gas passes through the fan and can make the sampling tube be located the pipe wall in the casing and form the comdenstion water, and the comdenstion water gets into in the rubber hose afterwards. Along with the gradual increase of the starting frequency, the more condensed water is accumulated in the rubber tube, the rubber tube can be blocked, so that the wind pressure switch can not be normally opened and closed, or the acidic condensed water further enters the wind pressure switch to corrode electronic components, so that the normal work of the wind pressure switch is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wind pressure sample connecting device, it can prevent that the comdenstion water that forms in the fan sampling tube from getting into the hose of being connected with wind pressure detection device.

An object of the utility model is to provide an above-mentioned wind pressure sample connecting device and subassembly of fan still.

An object of the utility model is also to provide an adopt the gas hot water system of above-mentioned subassembly.

In order to achieve the above object, the utility model provides a wind pressure sample connecting device, it is applicable to and connects between fan and wind pressure detection device. The connecting device comprises a first connecting pipe, wherein the first connecting pipe is provided with a first transverse part and a first vertical part which is formed by bending the first transverse part and extending upwards.

In some embodiments, the connecting device further comprises a second connecting pipe having a second transverse portion and a second vertical portion formed by bending the second transverse portion and extending upward.

Further, a solid holding portion is integrally formed between the first and second connection pipes.

Preferably, the holding portion is connected between the bent portion of the first connecting pipe and the second transverse portion of the second connecting pipe.

In some embodiments, the first connecting tube and the second connecting tube are arranged in parallel.

In order to achieve the above-mentioned another object, the present invention also provides a wind pressure sampling connection device and a fan assembly, which includes a fan having a housing and a wind pressure sampling tube extending from the housing. The assembly further comprises a wind pressure sampling connecting device connected with the wind pressure sampling pipe, wherein the wind pressure sampling connecting device comprises a first connecting pipe, and the first connecting pipe is provided with a first transverse part and a first vertical part formed by bending the first transverse part and extending upwards.

In some embodiments, the wind pressure sampling tube comprises a positive pressure sampling tube and a negative pressure sampling tube, and the first connecting tube is connected to one of the positive pressure sampling tube and the negative pressure sampling tube; the wind pressure sampling and connecting device also comprises a second connecting pipe connected with the other one of the positive pressure sampling pipe and the negative pressure sampling pipe, and the second connecting pipe is provided with a second transverse part and a second vertical part which is formed by bending the second transverse part and extending upwards.

Further, a solid holding portion is integrally formed between the first and second connection pipes.

To achieve the above-mentioned further object, the present invention further provides a gas water heater, which includes a housing, a burner for burning a mixture of gas and air, and a heat exchanger for absorbing heat generated from the burner and transferring the heat to water flowing therethrough. The gas water heating equipment also comprises the wind pressure sampling and connecting device, a fan assembly and a wind pressure detection device which is in gas communication with the wind pressure sampling and connecting device.

In some embodiments, the wind pressure detecting device has a detecting port, and the wind pressure sampling connecting device is in gas communication with the detecting port through a hose; the hose is fixed by a fixing member to a position vertically higher than the wind pressure sampling connection device in the housing.

Compared with the prior art, the beneficial effects of the utility model are that: because the wind pressure sampling connecting device is provided with the first vertical part, condensed water must be continuously accumulated to a high enough liquid level to possibly enter the hose, but enough condensed water cannot be formed after one-time startup, so that the condensed water can be accumulated in the horizontal part of the connecting device, and returns to the fan through the sampling pipe after shutdown, thereby avoiding the condensed water from entering the hose.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly introduced, it is obvious that the drawings related to the present invention in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without creative efforts.

FIG. 1 is a schematic plan view of a gas-fired water heating apparatus of the present invention in a particular embodiment with portions of the housing panels and parts of the apparatus removed to clearly show the corresponding structure;

FIG. 2 is a schematic perspective view of the wind pressure sampling connection shown in FIG. 1 connected to a fan assembly and a wind pressure detection device;

FIG. 3 is a schematic perspective view of the wind pressure sampling connection shown in FIG. 2;

FIG. 4 is a schematic cross-sectional view of the wind pressure sampling connection shown in FIG. 3;

FIG. 5 is a schematic perspective view of a pneumatic sampling connection in another embodiment.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. However, these embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art based on these embodiments are all included in the scope of the present invention.

The gas water heater uses combustible gas as fuel, such as natural gas, city gas, liquefied gas, methane, etc., and supplies heat to satisfy the living needs of users by burning the combustible gas, for example, a gas water heater for supplying living hot water, or a gas boiler for simultaneously supplying the living hot water and the heating needs, etc.

A specific embodiment of a gas-fired water heating apparatus is shown in fig. 1. The gas water heating apparatus 100 includes a housing 10, and a burner 20, a heat exchanger 30, a hood, a fan 60, a wind pressure detecting device 70, and the like, which are accommodated in the housing 10. The burner 20 includes a burner housing (not shown) within which is typically disposed a burner unit, such as a plurality of fire fins (not shown) disposed side-by-side. Each fire row piece is provided with a gas-air mixing channel, and gas and primary air conveyed by a gas conveying pipeline are mixed in the mixing channel and are transferred to fire holes at the tops of the fire row pieces to be combusted and generate heat. Since the construction and arrangement of fire flaps are well known to those skilled in the art, applicant is not repeated here.

The heat exchanger 30 is installed at an upper portion of the burner 20. In some embodiments, the heat exchanger may be a finned tube heat exchanger, i.e., a heat exchanger housing having a plurality of fins with a heat absorbing water tube (not shown) extending around the fins. The gas-air mixture is combusted in a combustion chamber formed by splicing the combustor shell and the heat exchanger shell, the generated heat is absorbed by the fins and further transferred to water flowing through the heat absorption water pipe, and the heated water is transferred to the water pipe of domestic water through the water outlet pipe, so that domestic water for drinking, bathing and the like is provided for users. The hood is fastened to the top of the heat exchanger 30 for collecting flue gas (exhaust gas containing carbon monoxide, nitrogen oxides, etc.) generated from the burner and discharging it to the outside.

As shown with reference to fig. 2, in some embodiments, a fan 60 is disposed alongside the hood for promoting convection of the gases. The fan may be a centrifugal fan, an axial fan, or a mixed flow fan, and in the present embodiment, the fan is a centrifugal fan. The fan 60 includes a casing and a motor provided on a side wall of the casing. The shell is provided with an air inlet on one side wall connected with the smoke hood, an air outlet on the top of the shell and a fan cavity communicated with the air inlet and the air outlet. An impeller (not shown) driven by a motor is usually arranged in the fan cavity, and negative pressure is formed in the fan cavity through rotation of the impeller to drive airflow to enter from the air inlet axially, then flow along the radial direction and be discharged from the air outlet, so that flue gas generated by combustion is driven to be discharged outdoors. The wind pressure detecting device can be a wind pressure switch or a wind pressure sensor. In the present embodiment, the wind pressure detecting device is a wind pressure switch 70, which generally has a negative pressure detecting port and a positive pressure detecting port.

In the embodiment shown in fig. 2, the wind pressure sampling tube extending from the casing of the fan 60 includes a positive pressure sampling tube 61 and a negative pressure sampling tube 62. One end of a wind pressure sampling connection device 40 is connected to the positive pressure sampling tube 61 and the negative pressure sampling tube 62, respectively, to constitute an assembly, and the other end is connected to the positive pressure and negative pressure detection ports of the wind pressure switch 70, respectively, through a pair of hoses 71, 72.

Referring to fig. 3 and 4, the wind pressure sampling connection device 40 includes a first connection pipe having a first transverse portion 411 and a first vertical portion 412 formed by bending the first transverse portion and extending upward. The wind pressure sampling connection device 40 further includes a second connection pipe having a second transverse portion 421 and a second vertical portion 422 formed by bending the second transverse portion and extending upward. In this embodiment, the included angle between the horizontal portion and the vertical portion of the first and second connecting pipes is a right angle, and in other embodiments, the included angle may be other angles. In some embodiments, the first and second connection pipes are arranged in parallel, i.e. the first transverse portion 411 is parallel to the second transverse portion 421 and the first vertical portion 411 is parallel to the second vertical portion 421. Wherein the first connecting pipe is connected with one of the positive pressure and negative pressure sampling pipes, and the second connecting pipe is connected with the other of the positive pressure and negative pressure sampling pipes. As shown in fig. 2, in the present embodiment, the first lateral portion 411 of the first connecting pipe is connected to the positive pressure sampling pipe 61, and the first vertical portion 412 thereof is connected to the positive pressure detection port of the wind pressure switch 70 via the hose 71; the second horizontal part 421 of the second connecting pipe is connected to the negative pressure sampling pipe 62, and the second vertical part 412 is connected to the negative pressure detecting port of the wind pressure switch 70 via the hose 72. In this embodiment, in order to ensure that the first connecting pipe and the second connecting pipe can maintain the relative connection position, a solid holding portion 43 is further integrally formed between the first and second connecting pipes, and preferably, the holding portion is connected between the bent portion of the first connecting pipe and the second transverse portion 421 of the second connecting pipe. Of course, in other embodiments, as shown in fig. 5, the holding portion may be omitted, i.e. only the first connecting pipe 51 and the second connecting pipe 52 are included. In addition, in some embodiments, only positive pressure or negative pressure needs to be detected, i.e. the wind pressure sampling connection device only comprises the first connection pipe or the second connection pipe.

As shown in fig. 2, after the device is started, the condensed water may enter the first transverse portion and/or the second transverse portion of the connecting device through the positive pressure sampling tube and/or the negative pressure sampling tube, but since the connecting device also has the first vertical portion and/or the second vertical portion, the condensed water must be continuously accumulated to a sufficiently high level before the condensed water can enter the hose. However, enough condensed water cannot be formed during one-time startup, so that the condensed water can be accumulated in the transverse part of the connecting device, and returns through the sampling tube after shutdown and flows into the fan, thereby preventing the condensed water from entering the hose. And the condensed water entering the fan is not enough to damage the shell of the fan and can be discharged together with the high-temperature flue gas after being evaporated when the fan is started next time. In some embodiments, the hoses 71, 72 are secured by a fastener to the inside of the housing at a location vertically above the wind pressure sampling connection, as shown in fig. 1, by a tie 80 securing the hoses to the housing back plate near the top, thereby extending the hoses 71, 72 a further distance up the connection to the first and/or second vertical portions of the wind pressure sampling connection, thus making it more difficult for condensation water to enter the hoses.

In the description of the above embodiments of the present disclosure, the orientations or positional relationships indicated by "longitudinal," "lateral," "axial," "radial," "circumferential," "horizontal," "vertical," "clockwise," "counterclockwise," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the invention.

In the above disclosure, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, the definitions of "first", "second", etc. features may explicitly or implicitly include at least one such feature. In the foregoing description, the terms "plurality," "plurality," and the like mean at least two, such as two, three, and the like, unless specifically limited otherwise.

In the above disclosure, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected through the interior of two elements or through the interaction of two elements unless otherwise specifically limited. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the disclosure above, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacting the second feature or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," or "above" a second feature may mean that the first feature is directly on or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature "under," "beneath," or "beneath" a second feature may be that the first feature is directly under or obliquely beneath the second feature, or simply means that the first feature is at a lesser elevation than the second feature.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.

Claims (10)

1. A wind pressure sampling connecting device is suitable for being connected between a fan and a wind pressure detection device; the method is characterized in that: the connecting device comprises a first connecting pipe, wherein the first connecting pipe is provided with a first transverse part and a first vertical part which is formed by bending the first transverse part and extending upwards.

2. The wind pressure sampling connection device according to claim 1, wherein: the connecting device also comprises a second connecting pipe, wherein the second connecting pipe is provided with a second transverse part and a second vertical part which is formed by bending the second transverse part and extending upwards.

3. The wind pressure sampling connection device according to claim 2, wherein: a solid holding portion is also integrally formed between the first and second connection pipes.

4. The wind pressure sampling connection device according to claim 3, wherein: the holding part is connected between the bending part of the first connecting pipe and the second transverse part of the second connecting pipe.

5. The wind pressure sampling connection device according to claim 2, wherein: the first connecting pipe and the second connecting pipe are arranged in parallel.

6. An assembly of a wind pressure sampling connecting device and a fan comprises the fan, wherein the fan is provided with a shell and a wind pressure sampling tube extending from the shell; the method is characterized in that: the assembly further comprises a wind pressure sampling connecting device connected with the wind pressure sampling pipe, wherein the wind pressure sampling connecting device comprises a first connecting pipe, and the first connecting pipe is provided with a first transverse part and a first vertical part formed by upwards extending after the first transverse part is bent.

7. The wind pressure sampling connection device and fan assembly of claim 6, wherein: the wind pressure sampling tube comprises a positive pressure sampling tube and a negative pressure sampling tube, and the first connecting tube is connected with one of the positive pressure sampling tube and the negative pressure sampling tube; the wind pressure sampling and connecting device further comprises a second connecting pipe connected with the other one of the positive pressure sampling pipe and the negative pressure sampling pipe, and the second connecting pipe is provided with a second transverse part and a second vertical part formed by bending the second transverse part and extending upwards.

8. The wind pressure sampling connection device and fan assembly of claim 7, wherein: a solid holding portion is also integrally formed between the first and second connection pipes.

9. A gas water heating apparatus includes a housing, a burner for burning a mixture of gas and air contained in the housing, a heat exchanger for absorbing heat generated by the burner and transferring the heat to a water flow passing through the heat exchanger; the method is characterized in that: the gas water heating equipment further comprises the wind pressure sampling connecting device and the fan assembly according to any one of claims 6 to 8, and a wind pressure detecting device in gas communication with the wind pressure sampling connecting device.

10. The gas-fired water heating apparatus according to claim 9, wherein: the wind pressure detection device is provided with a detection port, and the wind pressure sampling connection device is in gas communication with the detection port through a hose; the hose is fixed by a fixing member to a position vertically higher than the wind pressure sampling connection device in the housing.

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