CN220771412U

CN220771412U - Gas water heater

Info

Publication number: CN220771412U
Application number: CN202322189368.4U
Authority: CN
Inventors: 卢宇聪; 王杰盛; 张其
Original assignee: Guangdong Vanward New Electric Co Ltd
Current assignee: Guangdong Vanward New Electric Co Ltd
Priority date: 2023-08-14
Filing date: 2023-08-14
Publication date: 2024-04-12
Anticipated expiration: 2033-08-14

Abstract

The utility model relates to a gas water heater, which comprises a main controller, a coaxial smoke pipe and a fan assembly, wherein the air inlet end of the fan assembly is communicated with an outer ring channel of the coaxial smoke pipe and is used for conveying air to a combustion chamber of the gas water heater; the method is characterized in that: the gas water heater also comprises a temperature detection device which is arranged at an air outlet of the fan assembly; the temperature detection device is electrically connected with the main controller and is used for detecting the air outlet temperature of the fan assembly; wherein, be equipped with sealing member between fan subassembly and the temperature-detecting device. The utility model can realize the monitoring of the working state of the gas water heater by detecting the air temperature of the air outlet of the fan assembly, and has the characteristics of simple specific structure, simple wiring and the like.

Description

Gas water heater

Technical Field

The utility model relates to a water heater, in particular to a gas water heater.

Background

The gas water heater, especially the balanced gas water heater, is highly safe and popular with consumers by using a fan to forcibly supply outdoor air and discharge exhaust air to the outside.

In addition, in order to ensure the safety of the gas water heater, the current gas water heater generally integrates the functions of antifreezing, dry burning prevention, abnormal early warning and the like. In the prior art, a temperature detection device is usually arranged at a smoke tube to monitor the air temperature in the smoke tube so as to realize an antifreezing function and a dry burning prevention function; the mounting position of the temperature detection device is provided with a sealing ring for sealing, and the temperature of the smoke tube is higher, so that the service lives of the sealing ring and the temperature detection device are influenced.

Disclosure of Invention

The utility model aims to provide a gas water heater, which effectively solves the problem that the service lives of a sealing ring and a temperature detection device are influenced due to the fact that the temperature of a smoke tube is higher in the prior art.

The technical problems are solved by the following technical scheme:

the gas water heater comprises a main controller, a coaxial smoke pipe and a fan assembly, wherein the air inlet end of the fan assembly is communicated with an outer ring channel of the coaxial smoke pipe and is used for conveying air to a combustion chamber of the gas water heater; the method is characterized in that: the gas water heater also comprises a temperature detection device, and the temperature detection device is arranged at an air outlet of the fan assembly; the temperature detection device is electrically connected with the main controller and is used for detecting the air outlet temperature of the fan assembly; and a sealing part is arranged between the fan assembly and the temperature detection device.

Further, the fan assembly includes a volute; the gas water heater is provided with an air inlet channel; the volute is communicated with an outer ring channel of the coaxial smoke tube through the air inlet channel; the temperature detection device is arranged on the volute and is positioned at one side of the volute, which is away from the air inlet channel.

Further, a mounting hole site is arranged on a pipeline of an air outlet of the volute, and the temperature detection device stretches into the pipeline of the air outlet of the volute through the mounting hole of the mounting hole site.

Further, the sealing component is an O-shaped sealing ring.

Further, the temperature detection device comprises a connecting plate and a temperature probe, and the temperature probe is electrically connected with the main controller; the temperature probe stretches into a pipeline of an air outlet of the volute and is connected with the volute through the connecting plate.

Further, a groove is formed in the volute, the mounting hole is formed in the groove, the O-shaped sealing ring is located in the groove, and the depth of the groove is smaller than the thickness of the O-shaped sealing ring; and the O-shaped sealing ring is extruded through the connection of the connecting plate and the volute.

Further, the device also comprises a fixing piece, wherein the connecting plate is provided with a first through hole, and the volute is provided with a second through hole; the fixing piece penetrates through the first through hole and the second through hole, so that the connecting plate is fixedly connected with the volute.

Further, a flange is convexly arranged on one side of the second through hole, which faces the pipeline, the flange is surrounded on the second through hole, the fixing piece is a screw, and the screw is in threaded connection with the flange.

Further, the gas water heater is a balanced gas water heater.

Further, the temperature probe is a thermal resistor.

Compared with the background technology, the gas water heater has the beneficial effects that: according to the utility model, the temperature detection device is arranged at the air outlet of the fan assembly of the gas water heater to detect the temperature of air entering the combustion chamber of the gas water heater, wherein the air entering the gas water heater is heated when passing through the coaxial smoke tube, so that the working state of the gas water heater can be identified according to the air temperature at the air outlet, and further the monitoring of freezing prevention and dry burning prevention is realized; meanwhile, compared with the air temperature of the smoke tube, the temperature of the air temperature at the air outlet is relatively low, and further the service lives of the temperature detection device and the sealing component can be prolonged. The temperature detection device is arranged at the air outlet of the fan assembly, and the shell of the gas water heater can be maintained and replaced by opening, so that the gas water heater is more convenient.

Drawings

FIG. 1 is a schematic diagram of a gas water heater according to the present utility model;

FIG. 2 is a schematic view of the internal structure of FIG. 1;

FIG. 3 is a schematic cross-sectional view of B-B of FIG. 2;

fig. 4 is a partial enlarged view of a portion a in fig. 3.

Description of the reference numerals: 1. a main controller; 2. a temperature probe; 3. a fan assembly; 4. a coaxial smoke tube; 5. an O-shaped sealing ring; 6. a fixing member; 7. an air inlet channel; 41. an outer ring channel; 42. an inner ring channel; 31. a volute; 32. flanging; 33. a groove; 34. and (5) connecting a plate.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

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 implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; 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 terms in this application will be understood by those of ordinary skill in the art in a specific context.

The utility model provides a preferred embodiment, and a gas water heater, as shown in figures 1-4, comprises a main controller 1, a coaxial smoke tube 4, a fan assembly 3 and a temperature detection device.

Wherein the air inlet end of the fan assembly 3 is communicated with the outer ring channel 41 of the coaxial smoke tube 4 for delivering air to the combustion chamber of the gas water heater.

The temperature detection device is arranged at an air outlet of the fan assembly 3, is electrically connected with the main controller 1 and is used for detecting the air outlet temperature of the fan assembly 3. The main controller 1 judges the working state of the gas water heater according to the air outlet temperature of the fan assembly 3 detected by the temperature detection device, and further controls the execution actions of other devices so as to ensure the normal operation of the gas water heater.

Preferably, the gas water heater is provided with an air inlet channel 7, the air inlet channel 7 is communicated with an outer ring channel 41 of the coaxial smoke tube 4, the outer ring channel 41 of the coaxial smoke tube 4 is communicated with an air inlet end of the fan assembly 3, and an air outlet end of the fan assembly 3 is communicated with a combustion chamber of the gas water heater.

Meanwhile, the coaxial smoke tube 4 of the present embodiment is a sleeve structure, which includes an air intake passage and a smoke exhaust passage, and the outer ring passage 41 is an air intake passage of the coaxial smoke tube 4, and the inner ring passage 42 is a smoke exhaust passage. Namely, the air required by the gas water heater firstly enters the outer ring channel 41 (air inlet channel) of the coaxial smoke tube 4 through the air inlet channel 7 of the gas water heater, and then enters the combustion chamber of the gas water heater through the fan assembly 3 to participate in combustion; the flue gas generated after combustion sequentially passes through the air outlet channel of the gas water heater and enters the inner ring channel 42 (smoke exhaust channel) of the coaxial smoke tube 4, and is discharged to the outside through the smoke outlet of the coaxial smoke tube 4.

Since the flue gas exhausted after combustion in the combustion chamber is high temperature gas, the flue gas passing through the inner ring channel 42 of the coaxial smoke tube 4 heats the air in the outer ring channel 41 of the coaxial smoke tube 4. That is, the temperature of the air in the outer ring channel 41 of the coaxial smoke tube 4 will rise along with the rise of the temperature of the smoke discharged from the combustion chamber, so that the temperature detection device is arranged at the air outlet end of the fan assembly 3, and the temperature of the smoke discharged from the combustion chamber is obtained by detecting the temperature of the air entering the combustion chamber and judging whether the temperature exceeds the preset threshold value, so that whether the gas water heater fails or not is judged.

The specific working principle is as follows:

when the gas water heater is not in operation, the temperature of the air in the outer ring channel 41 of the coaxial smoke tube 4 is consistent with the external environment temperature due to the backward wind when the gas water heater is in a standby state. If the air outlet temperature of the fan assembly 3 detected by the temperature detection device is less than or equal to 5 ℃, the air temperature of the current environment is considered to be low, the gas water heater can be controlled to be started to have an anti-freezing function, and the situation that the gas water heater cannot be used due to frost cracking of a water tank of the gas water heater when the air temperature is low is avoided. Especially in winter in the north, the gas water heater often causes frost cracking of the water tank because of low air temperature, so the utility model can detect the air temperature of the air outlet of the fan assembly 3 in real time under the state that the gas water heater does not work, and timely start the frost preventing function, thereby avoiding the frost cracking of the water tank of the gas water heater and prolonging the service life of the gas water heater.

Under the condition that the gas water heater works, high-temperature smoke after being combusted in the combustion chamber of the gas water heater is discharged through the inner ring channel 42 of the coaxial smoke tube 4 and heats air of the outer ring channel 41 of the coaxial smoke tube 4. If the air temperature detected by the temperature detection device is less than or equal to 60 ℃, the smoke exhaust of the gas water heater is normal, and the gas water heater works normally without adverse phenomena. If the temperature detection device detects that the air temperature is higher, for example, between 80 ℃ and 140 ℃, it is indicated that smoke leakage may exist in the inner ring channel 42 of the coaxial smoke tube 4, that is, smoke leakage may exist in the smoke discharging channel of the coaxial smoke tube 4, high-temperature smoke discharged after combustion may be re-inhaled into the combustion chamber of the gas water heater to participate in combustion again, the condition may cause that the temperature of the smoke entering the combustion chamber is too high, and the normal operation of the gas water heater is affected, the main controller 1 can send an alarm through the alarm device and control the gas water heater to stop working, and meanwhile, send a fault code prompt to remind a user of the type of fault occurring in the gas water heater. If the air temperature detected by the temperature detection device is greater than 150 ℃, the water heater is considered to be in a dry-burning state, and likewise, the main controller 1 controls the gas water heater to stop working and give an alarm so as to remind a user of the fault type of the gas water heater.

In addition, the relationship between the specific air temperature value and the operating state of the gas water heater is merely illustrative, and the present embodiment may be specifically set according to practical experience and requirements, and is not limited to the temperature value range provided in the present embodiment.

According to the utility model, the temperature detection device is arranged at the air outlet end of the fan assembly 3 to detect the temperature of air entering the combustion chamber, so as to judge whether the smoke exhaust of the gas water heater is normal or not, and further judge whether the gas water heater works or not, thereby realizing the real-time monitoring of the working state of the gas water heater, timely finding out the abnormal state of the gas water heater, adopting corresponding measures, ensuring the stable work of the gas water heater, and further prolonging the service life and the use safety of the gas water heater.

Meanwhile, when the water heater works normally, because the temperature of the air entering the combustion chamber is lower, the temperature of the air entering the combustion chamber is detected by the temperature detection device arranged at the air outlet end of the fan assembly 3, so that the influence of high-temperature smoke in the coaxial smoke tube 4 on the service life of the temperature detection device can be effectively prevented, and the service life of the temperature detection device is prolonged.

Preferably, the fan assembly 3 comprises a volute 31, and the volute 31 is communicated with an outer ring channel 41 of the coaxial smoke tube 4 through an air inlet channel 7 of the gas water heater. The temperature detection device is arranged on the volute 31 and is positioned on one side of the volute 31 away from the air inlet channel 7 of the gas water heater.

Further, a mounting hole is provided on the pipe of the air outlet of the volute 31. The temperature detecting device extends into the pipe of the air outlet of the volute 31 through the mounting hole of the mounting hole.

Preferably, a sealing member is provided between the fan assembly 3 and the temperature detecting device, and air in the fan assembly 3 is prevented from being discharged to the outside by the sealing member. More preferably, the sealing member is an O-ring seal 5.

Preferably, the temperature detection means comprises a temperature probe 2 and a connection plate 34. The temperature probe 2 is electrically connected with the main controller 1, and transmits detected temperature data to the main controller 1. One end of the temperature probe 2 also extends into a pipeline of an air outlet of the volute 31 and is fixedly connected with the volute 31 through a connecting plate 34.

Preferably, the volute 31 is provided with a groove 33, the mounting hole is arranged in the groove 33, and the O-shaped sealing ring 5 is arranged in the groove 33. The depth of the groove 33 is smaller than the thickness of the O-ring 5. The connection between the connecting plate 34 and the volute 31 is used for extruding the O-shaped sealing ring 5 so as to ensure the tightness between the fan assembly 3 and the temperature probe 2 and avoid air leakage.

Preferably, the connection plate 34 is provided with a first through hole, and the volute 31 is provided with a second through hole. The fixing piece 6 sequentially passes through the first through hole and the second through hole, so that the connecting plate 34 is fixedly connected with the volute 31.

More preferably, a flange 32 is convexly arranged on one side of the second through hole facing the pipeline, and the flange 32 is fixed on the second through hole. The fixing member 6 is a screw which is in threaded connection with the flange 32.

The gas water heater in the utility model is preferably a balanced gas water heater.

Preferably, the temperature probe 2 in this embodiment is a thermal resistor. Since the resistance value of the thermal resistor changes with a change in temperature, a current signal is formed in the circuit. That is, the main controller 1 is electrically connected with the thermal resistor, and is used for detecting the current signal so as to obtain the current resistance value of the thermal resistor according to the current signal, so that the current air temperature of the air intake can be obtained according to the current resistance value.

The resistance value of the thermal resistor has a certain association relation with the temperature, a corresponding relation table can be stored in the system, and the temperature of the thermal resistor is obtained by matching the calculated current resistance value of the thermal resistor.

In the specific content of the above embodiment, any combination of the technical features may be performed without contradiction, and for brevity of description, all possible combinations of the technical features are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing detailed description of the embodiments presents only a few embodiments of the present utility model, which are described in some detail and are not intended to limit the scope of the present utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The gas water heater comprises a main controller (1), a coaxial smoke pipe (4) and a fan assembly (3), wherein the air inlet end of the fan assembly (3) is communicated with an outer ring channel (41) of the coaxial smoke pipe (4) and is used for conveying air to a combustion chamber of the gas water heater; the method is characterized in that: the gas water heater further comprises a temperature detection device, and the temperature detection device is arranged at an air outlet of the fan assembly (3); the temperature detection device is electrically connected with the main controller (1) and is used for detecting the air outlet temperature of the fan assembly (3); wherein, the fan assembly (3) is provided with a sealing part between the temperature detection device.

2. The gas water heater as recited in claim 1, wherein: the fan assembly (3) comprises a volute (31); the gas water heater is provided with an air inlet channel (7); the volute (31) is communicated with an outer ring channel (41) of the coaxial smoke tube (4) through the air inlet channel (7); the temperature detection device is arranged on the volute (31) and is positioned at one side of the volute (31) away from the air inlet channel (7).

3. The gas water heater as recited in claim 2, wherein: the temperature detection device is characterized in that a mounting hole site is arranged on a pipeline of an air outlet of the volute (31), and the temperature detection device stretches into the pipeline of the air outlet of the volute (31) through the mounting hole of the mounting hole site.

4. A gas water heater as claimed in claim 3, wherein: the sealing component is an O-shaped sealing ring (5).

5. The gas water heater as recited in claim 4, wherein: the temperature detection device comprises a connecting plate (34) and a temperature probe (2), and the temperature probe (2) is electrically connected with the main controller (1); the temperature probe (2) stretches into a pipeline of an air outlet of the volute (31) and is connected with the volute (31) through the connecting plate (34).

6. The gas water heater as recited in claim 5, wherein: the spiral case (31) is provided with a groove (33), the mounting hole is formed in the groove (33), the O-shaped sealing ring (5) is located in the groove (33), and the depth of the groove (33) is smaller than the thickness of the O-shaped sealing ring (5); and the O-shaped sealing ring (5) is extruded through the connection of the connecting plate (34) and the volute (31).

7. The gas water heater as recited in claim 5, wherein: the spiral case also comprises a fixing piece (6), wherein a first through hole is formed in the connecting plate (34), and a second through hole is formed in the spiral case (31); the fixing piece (6) penetrates through the first through hole and the second through hole, so that the connecting plate (34) is fixedly connected with the volute (31).

8. The gas water heater as recited in claim 7, wherein: the second through hole is towards protruding turn-ups (32) that are equipped with in one side of pipeline, turn-ups (32) enclose and locate the second through hole, mounting (6) are the screw, the screw with turn-ups (32) threaded connection.

9. The gas water heater as recited in claim 1, wherein: the gas water heater is a balanced gas water heater.

10. The gas water heater as recited in claim 5, wherein: the temperature probe (2) is a thermal resistor.