CN220582751U - Full premix gas heating equipment - Google Patents

Abstract

The utility model discloses full premix gas heating equipment, which comprises: a housing; the condensing heat exchanger is provided with a water outlet; the water seal assembly, the water seal assembly includes: the water tank is characterized by comprising a water tank and a sealing cover, wherein the top of the water tank is of an opening structure, a partition plate is arranged in the water tank, the partition plate is longitudinally arranged and divides the water tank into a first cavity and a second cavity, the bottom of the water tank is also provided with a water outlet pipe communicated with the second cavity, and the sealing cover is provided with a first water inlet pipe; the sealing cover is arranged on the water tank and covers the opening structure, and the first water inlet pipe extends to the bottom of the first cavity; the condensing heat exchanger and the water seal assembly are arranged in the shell, and the first water inlet pipe is connected with a water outlet of the condensing heat exchanger through a pipeline. The combustion efficiency of the full-premix gas heating equipment is improved, and the energy consumption is reduced.

Description

Full premix gas heating equipment

Technical Field

The utility model belongs to the technical field of household appliances, and particularly relates to full premix gas heating equipment.

Background

At present, the gas heating stove is a household appliance commonly used in daily life of people, and the gas heating stove adopts a mode of burning gas to heat water, thereby achieving the purpose of heating. The full premix gas heating equipment is widely popularized and used due to high heat exchange efficiency, and generally comprises a condensing heat exchanger, a plate heat exchanger, a fan and the like.

As disclosed in chinese patent publication No. CN101118127a, a full premix condensing dual-purpose device for heating and water heating is disclosed, in the use process, after the fan is started, the external air is sucked and connected with the fuel gas to drive and input into the burner in the condensing heat exchanger for combustion, so as to meet the heating requirement.

The condensing heat exchanger can generate more condensed water due to the working reasons, and the conventional technology is to connect a drain pipe on a condensed water outlet for discharging the condensed water. However, in the actual use process, the drain pipe is always communicated with the outside, so that the inside of the condensing heat exchanger is communicated with the outside atmosphere, and the combustion efficiency of the fuel gas is reduced. In view of this, how to design a fully premixed gas heating device for improving the gas combustion efficiency to reduce the energy consumption is a technical problem to be solved by the present utility model.

Disclosure of Invention

The utility model provides full premix gas heating equipment, which can improve the combustion efficiency of the full premix gas heating equipment and reduce the energy consumption.

In order to achieve the technical purpose, the utility model is realized by adopting the following technical scheme:

in one aspect, the present utility model provides a ventilation assembly comprising:

the cover body is provided with a through hole;

the water pan is provided with a ventilating duct which is vertically arranged, and the bottom of the water pan is also provided with a drain pipe;

an air filter;

the cover body is arranged on the water receiving disc and covers the water receiving disc, an air inlet cavity and a vent hole communicated with the air inlet cavity are formed between the cover body and the water receiving disc, the vent pipe is arranged in the through hole, an air inlet area is formed between the vent pipe and the through hole, and the air filter is arranged on the vent hole.

Compared with the prior art, the utility model has the advantages and positive effects that: through increasing water seal assembly in the shell, the comdenstion water that condensing heat exchanger produced is continuous through first inlet tube entering into the water tank, and the continuous increase of condensed water in the water tank for the water level in the water tank is continuous to rise for the lower mouth of pipe of first inlet tube is submerged by the water, and then makes first inlet tube by the water seal owner in the water tank, reduces outside air and enters into condensing heat exchanger through condensing heat exchanger's outlet, realizes improving full premix gas heating equipment's combustion efficiency and reduces the energy consumption.

In an embodiment of the present application, a water level sensor is further disposed on the cover, and the water level sensor is located in the second cavity.

In an embodiment of the application, the bottom of water tank still is provided with the intercommunication the drain of first cavity, be provided with detachably end cap on the drain.

In an embodiment of the present application, the drain pipe and the plug are both located at the bottom of the housing and extend out of the housing.

In an embodiment of the present application, further comprising a ventilation assembly, comprising:

the cover body is provided with a through hole;

the water pan is provided with a ventilating duct which is vertically arranged, and the bottom of the water pan is also provided with a drain pipe;

an air filter;

the cover body is arranged on the water receiving disc and covers the water receiving disc, an air inlet cavity and a vent hole communicated with the air inlet cavity are formed between the cover body and the water receiving disc, the vent pipe is arranged in the through hole, an air inlet area is formed between the vent pipe and the through hole, and the air filter is arranged on the vent hole;

the sealing cover is also provided with a second water inlet pipe, a water outlet of the second water inlet pipe is positioned above the first cavity, and the second water inlet pipe is connected with the water discharge pipe through a pipeline.

In an embodiment of the application, a first mounting port and a second mounting port are arranged at the top of the shell, the through port is located below the first mounting port, and the inserting port is located below the second mounting port.

In an embodiment of the present application, the cover body is further provided with an insertion port, the insertion port is located at the outer side of the ventilation opening, and the air filter is inserted into the insertion port and covers the ventilation opening.

In an embodiment of the present application, an extension portion is disposed on the cover body, the extension portion is disposed on the outer side of the first notch, and the insertion opening is disposed on the extension portion.

In an embodiment of the present application, the upper port and the lower port of the ventilation pipe are arranged in a staggered manner.

In an embodiment of the present application, the vertical projection portions of the upper port and the lower port of the ventilation duct overlap.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of a full premix gas heating apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a partial structure of an embodiment of a fully premixed gas heating apparatus according to the present utility model;

FIG. 3 is a second schematic diagram of a partial structure of an embodiment of a fully premixed gas heating device according to the present utility model;

FIG. 4 is a schematic view of the air intake assembly of FIG. 1;

FIG. 5 is a schematic view of the structure of the extension tube of FIG. 4;

FIG. 6 is one of the schematic structural views of the ventilation assembly of FIG. 1;

FIG. 7 is a second schematic view of the ventilation assembly of FIG. 1;

FIG. 8 is a third schematic view of the ventilation assembly of FIG. 1;

FIG. 9 is a cross-sectional view taken along line A-A of FIG. 8;

FIG. 10 is one of the schematic structural views of the vent assembly of FIG. 1;

FIG. 11 is a second schematic view of the ventilation assembly of FIG. 1;

FIG. 12 is a third schematic view of the ventilation assembly of FIG. 1;

fig. 13 is a sectional view taken along line B-B of fig. 12.

Reference numerals:

the gas valve comprises a shell 100, a mounting frame 110, a gas valve 120 and a water pump 130;

a first mounting port 101, a second mounting port 102;

a condensing heat exchanger 200, an air intake pipe 201;

an air inlet assembly 300, a fan 310, a tee joint 320, a gas pipe 330 and an extension pipe 340;

a first tube 341 and a second tube 342;

a lateral tube 3421, a longitudinal tube 3422, and an expansion portion 3423;

the ventilation assembly 400, the cover 410, the water pan 420, and the air filter 430;

a through hole 411, an insertion hole 412, a first notch 413, an extension 414, a ventilation pipe 421, a drain pipe 422, and a second notch 423;

the water seal assembly 500, the water tank 510, the cover 520, and the water level sensor 530;

baffle 511, outlet pipe 512, plug 513, first inlet pipe 521, second inlet pipe 522.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in the description of the present utility model, terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model. Furthermore, 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.

In the present utility model, unless explicitly specified 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 connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

An embodiment as shown in fig. 1 to 13, the present embodiment provides a full premix gas heating apparatus, including:

a housing 100, in which a blower 310 is provided in the housing 100;

the condensing heat exchanger 200, the condensing heat exchanger 200 is disposed in the housing 100.

In order to maintain the air pressure in the condensing heat exchanger 200 during the process of discharging the condensed water in the condensing heat exchanger 200, the gas in the condensing heat exchanger 200 is efficiently combusted to be heated. The full premix gas heating equipment still includes: a water seal assembly 500;

the water seal assembly 500 includes:

the water tank 510, the top of the water tank 510 is of an opening structure, a baffle 511 is arranged in the water tank 510, the baffle 511 is longitudinally arranged and divides the water tank 510 into a first cavity and a second cavity, and a water outlet pipe 512 communicated with the second cavity is also arranged at the bottom of the water tank 510;

a cover 520, the cover 520 being provided with a first water inlet pipe 521;

wherein, the cover 520 is disposed on the water tank 510 and covers the opening structure, the first water inlet pipe 521 extends to the bottom of the first cavity, and the first water inlet pipe 521 is connected with the water outlet of the condensing heat exchanger 200 through a pipe.

Specifically, a water seal assembly 500 is additionally added in the housing 100, and the water seal assembly 500 is used to connect with the water outlet of the condensing heat exchanger 200. In this way, the condensed water outputted from the drain port of the condensing heat exchanger 200 is introduced into the water tank 510 via the first water inlet pipe 521.

Along with the continuous running of the condensing heat exchanger 200, the condensed water generated by the condensing heat exchanger 200 continuously enters the water tank 510 through the first water inlet pipe 521, and the water level in the water tank 510 continuously increases, so that the lower pipe orifice of the first water inlet pipe 521 is immersed by water, and further the first water inlet pipe 521 is sealed by the water in the water tank 510, and the outside air is reduced from entering the condensing heat exchanger 200 through the water outlet of the condensing heat exchanger 200.

As the time of use increases, the water level in the first chamber in the water tank 510 increases, and after the water level is higher than the partition 511, the water in the first chamber overflows into the second chamber and is discharged from the water outlet pipe 512 at the bottom of the second chamber.

In some embodiments, for the first cavity, as the usage time increases, there may be a certain amount of dirt at the bottom of the first cavity, and for convenience in cleaning the dirt in the first cavity in time, a drain outlet communicating with the first cavity may be further provided at the bottom of the water tank 510, and a detachable plug 513 is provided on the drain outlet.

Specifically, in the use, after the user uses full premix gas heating equipment for a certain period of time, just can open end cap 513 to discharge the water in the first cavity, and the water in the discharge process, the filth of first cavity bottom will follow rivers and flow together to realize timely clearance first cavity bottom's filth.

In another embodiment, to facilitate the cleaning operation by the user and the connection of the external water pipe, the drain pipe 422 and the plug 513 may be located at the bottom of the housing 100 and extend to the outside of the housing 100.

Specifically, when an external water pipe is connected for drainage, the external water pipe may be directly connected to the drain pipe 422 at the bottom of the housing 100. When the user needs to clean the water tank 510, the plug 513 leaking outside the bottom of the housing 100 can be unscrewed so that the water in the water tank 510 flows to the outside of the housing 100.

In some embodiments of the present application, in order to provide reliability of use, a water level sensor 530 is further disposed on the cover 520, and the water level sensor 530 is located in the second cavity

Specifically, the water level sensor 530 is electrically connected to an electric control board of the full premix gas heating apparatus. In the use process of the water seal assembly 500, the water outlet pipe 512 or an external water pipe connected to the water outlet pipe 512 is blocked, and in case of further blocking, the water in the water tank 510 cannot be discharged, so that the condensing heat exchanger 200 is easily damaged.

And through still being provided with water level sensor 530 on closing cap 520, to the water in the second cavity when unable normal discharge because of the jam, the water level in the second cavity rises constantly, when the water level in the second cavity risees to water level sensor 530 department, water level sensor 530 will detect the water level in the second cavity and surpass the setting value and then trigger full premix gas heating equipment's automatically controlled board and remind the warning.

In another embodiment of the present application, in order to meet the air suction requirement of the fan 310 inside the casing 100, the air intake quality of the condensing heat exchanger 200 is improved; meanwhile, in order to solve the damage to the internal devices caused by the inflow of external rainwater into the housing 100 during use. The full premix gas heating equipment still includes: a ventilation assembly 400.

The ventilation assembly 400 includes:

a cover 410, wherein a through hole 411 is formed in the cover 410;

the water receiving disc 420, the water receiving disc 420 is provided with a ventilating duct 421, the ventilating duct 421 is vertically arranged, and the bottom of the water receiving disc 420 is also provided with a drain pipe 422;

an air filter 430;

wherein, the cover 410 is disposed on the water pan 420 and covers the water pan 420, an air inlet cavity and a vent (not labeled) communicating with the air inlet cavity are formed between the cover 410 and the water pan 420, the vent 421 is disposed in the through hole 411, an air inlet area is formed between the vent 421 and the through hole 411, and the air filter 430 is disposed on the vent;

in addition, the ventilation assembly 400 is disposed on the housing 100 above the condensing heat exchanger 200, and the exhaust port of the condensing heat exchanger 200 is connected to the ventilation duct 421.

Specifically, since the blower 310 is located in the housing 100, air sucked into the housing 100 during operation is inputted into the condensing heat exchanger 200, in order to perform a filtering and purifying process on the air inputted into the housing 100. For this reason, for the space entered into the housing 100, the air filter 430 of the ventilation assembly 400 performs a filtering process, and thus the air flowing therethrough is purified by the air filter 430 to filter dust in the air, so that the air entered into the condensing heat exchanger 200 is cleaner.

In the actual use process, the external air enters the air inlet cavity through the air inlet area formed between the ventilating duct 421 and the through hole 411, and then the air enters the shell 100 after being filtered by the air filter 430, and is conveyed into the condensing heat exchanger 200 to be mixed with the fuel gas for combustion under the action of the fan 310.

Correspondingly, a second water inlet pipe 522 is arranged on the sealing cover 520, a water outlet of the second water inlet pipe 522 is positioned above the first cavity, and the second water inlet pipe 522 is connected with the water outlet pipe 422 through a pipeline. Specifically, for the rainwater collected by the water receiving tray 420, the rainwater is discharged into the water tank 510 through the drain pipe 422 and stored in the first chamber, so that the rainwater is discharged through the ventilation assembly 400.

The water receiving disc is arranged on the ventilation assembly, the ventilation pipeline is arranged on the water receiving disc and connected with the external smoke exhaust pipe, and when rainwater flows into the room through the smoke exhaust pipe, the rainwater is collected in the water receiving disc along the outer wall of the ventilation pipeline and cannot damage electric devices in the housing; in addition, in the use, outside air enters into the shell after entering into the air inlet cavity and enters into the shell after being filtered by the air filter, so that the air inlet quality in the shell is improved, rainwater is collected through the water receiving disc, and the air entering into the shell is purified by the air purifier, so that the use reliability of the fully premixed gas heating equipment is improved.

Meanwhile, for the ventilation assembly 400, the water receiving tray 420 is located below the air inlet area, in a rainy day environment, after external rainwater flows into the room through the smoke exhaust pipe connected to the ventilation pipe 421, the rainwater on the smoke exhaust pipe flows into the water receiving tray 420 along the outer wall of the ventilation pipe 421, and then the rainwater is uniformly collected through the water receiving tray 420, and the rainwater collected by the water receiving tray 420 can be discharged to a designated position through the drain pipe 422, so that the rainwater is prevented from entering the housing 100 to damage internal devices.

In an embodiment of the present application, the cover 410 is further provided with a plug-in port 412, the plug-in port 412 is located at the outer side of the vent, and the air filter 430 is inserted into the plug-in port 412 and covers the vent.

Specifically, the air filter 430 needs to be cleaned or replaced after long-term use, so as to facilitate replacement and maintenance of the air filter by an operator. A fitting opening 412 is provided in the cover 410 and the air filter 430 is inserted into the fitting opening 412 to complete the assembly. After the air filter 430 is inserted into the insertion opening 412, the air filter 430 will block the vent.

In another embodiment, a first notch 413 is disposed on one side of the cover 410, a second notch 423 is disposed on one side of the water tray 420, and the first notch 413 and the second notch 423 form the ventilation opening.

Specifically, after the cover 410 is mounted on the water pan 420, the first notch 413 and the second notch 423 are butted together to form the ventilation opening.

In some embodiments, the cover 410 is provided with an extension portion 414, the extension portion 414 is disposed outside the first notch 413, and the insertion opening 412 is disposed on the extension portion 414.

Specifically, the extension 414 formed on the cover 410 extends toward the outside of the first notch 413, so that the air filter 430430 is mounted on the outside of the vent to block the vent.

In another embodiment of the present application, the upper and lower ports of the ventilation duct 421 are arranged in a staggered manner.

Specifically, the ventilation duct 421 is integrally formed in a bent duct form, so as to reduce the influence of external air pressure on the internal combustion of the condensing heat exchanger 200.

In one embodiment, the vertical projection portions of the upper port and the lower port of the ventilation duct 421 overlap, specifically, during the smoke discharging process, since the projection portions of the upper port and the lower port overlap, it is ensured that the smoke outputted from the condensing heat exchanger 200 can be smoothly discharged through the ventilation duct 421.

In another embodiment, the inner wall of the ventilation duct 421 forms a cambered surface, which is arranged opposite to the lower port. Specifically, the cambered surface formed by the inner wall of the ventilation pipe 421 can guide the airflow entering the ventilation pipe 421 to the upper port, so as to improve the smoothness of smoke discharge.

In another embodiment of the present application, the top of the housing 100 is provided with a first mounting port 101 and a second mounting port 102, the through port 411 is located below the first mounting port 101, and the insertion port 412 is located below the second mounting port 102.

Specifically, during the assembly process, the ventilation assembly 400 is integrally installed and fixed on the top of the housing 100, and the upper end portion of the ventilation duct 421 is located in the first installation opening 101 to satisfy connection with the external smoke exhaust pipe. While the air filter 430 may be fittingly inserted into the insertion port 412 through the second mounting port 102 to enable replacement of the maintenance air filter 430 outside the housing 100.

In the second embodiment, as shown in fig. 1 to 5, a burner (not labeled) is disposed in the condensation heat exchanger 200, and an air inlet pipe 201 communicating with the burner is further disposed on the condensation heat exchanger 200;

the full premix gas heating equipment still includes the subassembly 300 that admits air, and the subassembly 300 that admits air sets up in shell 100, and the subassembly 300 that admits air includes fan 310, tee bend 320, gas pipe 330 and extension pipe 340, and tee bend 320 is connected respectively to gas pipe 330 and extension pipe 340, and tee bend 320 sets up on the air intake of fan 310, and air inlet 201 is connected to fan 310's air outlet.

Specifically, the housing 100 is further provided with a gas valve 120 and a water pump 130, wherein the gas valve 120 is connected with the gas pipe 330 to control the gas to enter into the gas pipe 330; and the water pump 130 is connected to the cold water inlet of the condensing heat exchanger 200 to supply cold water to be heated into the condensing heat exchanger 200.

In the actual assembly process, the blower 310 is installed on the air inlet pipe 201 of the condensing heat exchanger 200, and then the gas pipe 330 and the extension pipe 340 are connected through the tee 320.

In this way, the supplied fuel gas is inputted into the blower 310 through the fuel gas pipe 330, and the air is inputted into the blower 310 through the extension pipe 340, and the air and the fuel gas are mixed by the blower 310 and are inputted into the condensing heat exchanger 200 through the air inlet pipe 201 to be burned. The specific process of burning fuel gas by the Guan Lengning heat exchanger 200 to heat water flowing through can refer to conventional full premix fuel gas heating equipment, and is not limited and described in detail herein.

Wherein, during operation, the gas supplied from the gas supply pipeline is conveyed into the fan 310 via the gas pipe 330 and blown into the condensing heat exchanger 200.

Meanwhile, under the action of the fan 310, air is sucked into the fan 310 through the extension pipe 340, and under the action of the extension pipe 340, the length distance in the air conveying process is effectively increased, so that the phenomenon that the air flow is directly sucked by the fan 310 to cause mutual interference between the air flow and devices around the fan 310 to generate larger noise is avoided.

In the actual installation design process, for the extension tube 340, the inlet of the extension tube 340 may be disposed at a relatively regular position in the space of the housing 100, so as to reduce noise generated when the extension tube 340 inhales.

In one embodiment of the present application, for convenience of assembling by an operator, the housing 100 is provided with a mounting frame 110, and the extension tube 340 is disposed on the mounting frame 110.

Specifically, the housing 100 is provided with a mounting bracket 110 to assist in mounting and fixing the extension tube 340 through the mounting bracket 110. In the use process, because the whole length of the extension tube 340 is longer, after the extension tube 340 is mounted on the tee 320, if the extension tube 340 is not firmly fixed in the operation process of the fan 310, air flow is generated to be conveyed in the extension tube 340, and vibration of the extension tube 340 is easily caused.

The mounting bracket 110 is used for assisting in fixing the extension tube 340, so that on one hand, the mounting firmness of the extension tube 340 can be improved, and on the other hand, the extension tube 340 can be kept stable in the use process so as to play a silencing role.

In some embodiments of the present application, for the mounting bracket 110, which is suspended at the top of the housing 100, the condensing heat exchanger 200 is fixed at one side of the mounting bracket 110, the extension tube 340 is fixed at the other side of the mounting bracket 110, and the condensing heat exchanger 200 is also fixed at the back of the housing 100.

Specifically, the mounting bracket 110 is fixed to the top of the housing 100 and located at the front side of the condensing heat exchanger 200, the extension pipe 340 in the lower air intake assembly 300 is fixedly installed by the mounting bracket 110 being hung, one end of the extension pipe 340 is connected to the tee 320, and the entire structure of the extension pipe 340 is fixedly supported by the mounting bracket 110.

In this way, the extension pipe 340 may be integrally disposed at the front side of the condensing heat exchanger 200 to fully utilize the space between the condensing heat exchanger 200 and the front panel of the housing 100 to install the extension pipe 340. In addition, there are few parts in the area between the condensing heat exchanger 200 and the front panel of the housing 100, and thus, during the suction process of the extension pipe 340, the interference of the air flow with other parts is reduced, and a large air flow noise is generated.

In another embodiment of the present application, at least the following structural improvement design may be performed in order to enhance the overall silencing effect of the extension tube 340.

In one embodiment, the extension pipe 340 has a variable diameter pipe structure. Specifically, in order to more effectively reduce noise during operation, the pipe diameter of the extension pipe 340 is changed in the direction of the airflow. For example: along the air flow direction, the pipe diameter can be increased firstly and then is reduced, so that the noise generated in the conveying process of the air flow is reduced.

In the second mode, the extension tube 340 is bent to form at least one bending portion.

Specifically, by forming the bending portion on the extension pipe 340, the air sucked into the extension pipe 340 may change the flow direction during the flow process, thereby achieving noise reduction.

In some embodiments, the extension tube 340 includes a first tube 341 and a second tube 342, where the first tube 341 has an inverted U-shaped structure and the second tube 342 is connected between the first tube 341 and the tee 320.

Specifically, the first tube 341 has an inverted U-shaped structure, and two bending portions are formed on the first tube 341. The connection portion between the second tube 342 and the first tube 341 may be disposed in a manner of being inclined with respect to each other, so as to form a third bending portion at the connection portion.

In another embodiment, the first tube 341 includes a transverse tube 3421 and two longitudinal tubes 3422, where the longitudinal tubes 3422 are respectively disposed at two ends of the transverse tube 3421, one of the longitudinal tubes 3422 is connected to the second tube 342, and an expansion portion 3423 is formed on the transverse tube 3421.

Specifically, the first tube 341 integrates the first and second structural designs, the connection portion between the transverse tube 3421 and the longitudinal tube 3422 forms a bending portion, and the expansion portion 3423 forms a reducing tube structure, so as to more effectively improve the silencing effect.

In some embodiments, the air inlet of the first tube 341 is designed to have a bell mouth structure to increase the air intake. And the pipe diameter of the first pipe body 341 is integrally larger than that of the second pipe body 342 so as to further optimize the silencing effect of the reducer pipe structure.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. The utility model provides a full premix gas heating equipment which characterized in that includes:

a housing;

the condensing heat exchanger is provided with a water outlet;

the water seal assembly, the water seal assembly includes: the water tank is characterized by comprising a water tank and a sealing cover, wherein the top of the water tank is of an opening structure, a partition plate is arranged in the water tank, the partition plate is longitudinally arranged and divides the water tank into a first cavity and a second cavity, the bottom of the water tank is also provided with a water outlet pipe communicated with the second cavity, and the sealing cover is provided with a first water inlet pipe; the sealing cover is arranged on the water tank and covers the opening structure, and the first water inlet pipe extends to the bottom of the first cavity;

the condensing heat exchanger and the water seal assembly are arranged in the shell, and the first water inlet pipe is connected with a water outlet of the condensing heat exchanger through a pipeline.

2. The full premix gas heating apparatus of claim 1, wherein a water level sensor is further provided on the cover, and the water level sensor is located in the second cavity.

3. The full premix gas heating apparatus of claim 1, wherein a drain port communicating with the first cavity is further provided at the bottom of the water tank, and a detachable plug is provided on the drain port.

4. The full premix gas heating apparatus of claim 3, further comprising a ventilation assembly comprising:

the cover body is provided with a through hole;

the water pan is provided with a ventilating duct which is vertically arranged, and the bottom of the water pan is also provided with a drain pipe;

an air filter;

the cover body is arranged on the water receiving disc and covers the water receiving disc, an air inlet cavity and a vent hole communicated with the air inlet cavity are formed between the cover body and the water receiving disc, the vent pipe is arranged in the through hole, an air inlet area is formed between the vent pipe and the through hole, and the air filter is arranged on the vent hole;

the sealing cover is also provided with a second water inlet pipe, a water outlet of the second water inlet pipe is positioned above the first cavity, and the second water inlet pipe is connected with the water discharge pipe through a pipeline.

5. The full premix gas heating apparatus of claim 4, wherein the drain pipe and the plug are both positioned at the bottom of the housing and extend out of the housing.

6. The full premix gas heating apparatus of claim 5, wherein a first mounting port and a second mounting port are provided at the top of the housing, and the through port is located below the first mounting port.

7. The full premix gas heating apparatus of claim 6, wherein the cover further comprises a plug opening, the plug opening is located at an outer side of the vent opening, the air filter is inserted into the plug opening and covers the vent opening, and the plug opening is located below the second installation opening.

8. The full premix gas heating apparatus of claim 7, wherein the cover is provided with an extension portion, and the insertion opening is provided on the extension portion.

9. The full premix gas heating apparatus of claim 7, wherein the upper and lower ports of the ventilation duct are arranged in a staggered manner.

10. The full premix gas heating apparatus of claim 9, wherein the vertical projection portions of the upper and lower ports of the ventilation duct overlap.