Flue type gas water heater

Abstract

The utility model provides a flue type gas water heater which comprises a shell, a heat exchange chamber and a controller are arranged in the shell, a gas proportional valve, a water inlet valve and a water outlet connector are installed on the shell, a first temperature sensor is arranged at the position of the water inlet valve, a burner is arranged at the lower end of the heat exchange chamber, a heat exchanger is arranged at the upper end of the heat exchange chamber, and a second temperature sensor is arranged at the position of the water outlet connector. The heat exchanger is respectively connected with the water inlet valve and the water outlet connector through water pipes, the combustor is communicated with the gas proportional valve through a gas square pipe and comprises a first fire row and a second fire row, a first channel and a second channel are respectively arranged in the gas square pipe, and the first fire row and the second fire row are communicated with the gas proportional valve. The gas outlet end of the first channel is communicated with a first fire grate, the gas outlet end of the second channel is communicated with a second fire grate, the gas inlet end of the first channel and the gas inlet end of the second channel are both communicated with the gas proportional valve, and the gas inlet end of the second channel is connected with a normally closed electromagnetic valve. And the electromagnetic valve and the first temperature sensor are electrically connected with the controller.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of gas water heater, especially a flue type gas water heater. BACKGROUND

[0002] The energy required for the water heater to raise the temperature of water to the same set temperature is not the same under different ambient temperatures.For example, in spring and summer, the ambient temperature is high, and the temperature of cold water is usually between 20-30 degrees, and the energy required to raise the temperature of the cold water in this environment to 40-degree hot water for bathing is less, that is, only small firepower is needed to raise the temperature of water to the appropriate temperature; in autumn and winter, the ambient temperature is low, and the temperature of cold water is usually around 0-15 degrees, and more energy is required to raise the temperature of the cold water in this environment to 40-degree hot water for bathing, that is, more firepower is required. Therefore, it is necessary to adjust the firepower by distinguishing the seasons, so as to better output hot water.

[0003] However, the existing flue type gas water heater usually uses a water-gas linkage valve for water-gas linkage, which includes a cold water inlet part and a gas valve part, and the gas valve part is communicated with a gas distribution rod, the upper nozzle of the gas distribution rod is matched with the burner, and the heat exchanger is communicated with the hot water outlet pipe. This linkage structure is relatively complex, and there are generally high failure rates of water-gas linkage valves, insufficient combustion, poor flue gas, low energy efficiency and other defects, and there are also problems such as no automatic constant temperature adjustment for bathing, the need for manual adjustment, poor bathing effect and the like.

[0004] Moreover, the existing structure uses a water-gas linkage valve structure to realize firepower control, which requires manual adjustment of the size of water to realize the adjustment of firepower, and the start is affected by water pressure, and it is difficult to realize automatic adjustment of water temperature. Utility model content

[0005] Therefore, it is necessary to provide a flue type gas water heater.

[0006] The utility model provides a flue type gas water heater, including the casing, be provided with the heat exchange chamber and the controller in the casing, install gas proportional valve, water inlet valve and water outlet joint on the casing, first temperature sensor is set in water inlet valve department, the lower extreme of heat exchange chamber is provided with combustor, is provided with heat exchanger in the upper extreme, heat exchanger is connected water inlet valve and water outlet joint respectively through water pipe, combustor passes through gas square tube with gas proportional valve conduction, combustor includes first fire and second fire, first channel and second channel are set up in gas square tube respectively, the gas end of first channel is linked with first fire, the gas end of second channel is linked with second fire, the gas end of first channel and the gas end of second channel all are linked with gas proportional valve, the gas end of second channel is connected and is provided with the solenoid valve of normally closed type, solenoid valve, first temperature sensor all are connected with controller electrically.

[0007] Preferably, the water inlet valve is provided with a flow sensor, and the flow sensor is electrically connected with the controller.

[0008] Preferably, the water inlet valve is provided with a flow sensor, and the flow sensor is electrically connected with the controller.

[0009] Preferably, the water outlet joint is provided with a second temperature sensor, and the second temperature sensor is electrically connected with the controller.

[0010] Preferably, the gas square tube is provided with a third channel, the first end of the third channel is communicated with the gas proportional valve, the second end of the third channel is respectively provided with a first through hole and a second through hole, the first through hole is communicated with the first channel and the third channel, the second through hole is communicated with the second channel and the third channel, the gas inlet end of the first channel and the gas inlet end of the second channel are communicated with the gas proportional valve through the third channel, the solenoid valve is located at the second channel, and the solenoid valve is used for closing or opening the second through hole.

[0011] Preferably, the bottom of the casing is provided with an air inlet, the top of the casing is provided with a smoke outlet, the top end of the casing is provided with an air inlet and smoke outlet assembly, the air inlet and smoke outlet assembly is located above the combustor, and the air inlet and smoke outlet assembly comprises a smoke outlet pipe.

[0012] Preferably, the air inlet and smoke exhaust assembly comprises a first guide plate, a second guide plate and a third guide plate arranged from top to bottom, the first guide plate is installed at the bottom of the smoke exhaust pipe, the first guide plate and the smoke exhaust pipe form an inverted funnel structure, the airflow above the first guide plate is guided to the smoke exhaust pipe, the second guide plate is located above the outer side of the first guide plate, the second guide plate is an arc-shaped plate with an arc opening facing upward, the third guide plate is located above the second guide plate, the third guide plate is a bent plate with a bent opening facing upward, an auxiliary air inlet channel is formed between the bottom surface of the second guide plate and the top surface of the third guide plate, an air inlet is arranged on the third guide plate, and a wind deflector is arranged on the third guide plate at the position of the air inlet, and the wind deflector is inclined towards the air inlet channel.

[0013] Preferably, the second guide plate and the third guide plate are both two, and the two second guide plates and the two third guide plates are symmetrically arranged on the two sides of the first guide plate.

[0014] Preferably, the bottom of the third guide plate is provided with a baffle, the bottom of the first guide plate is provided with a fourth guide plate, the fourth guide plate is an arc-shaped plate with an arc opening facing upward, and the fourth guide plate is located between the two second guide plates.

[0015] Preferably, the air inlet and smoke exhaust assembly further comprises a first fixed plate and a second fixed plate, the first fixed plate and the second fixed plate are oppositely arranged, the first ends of the first guide plate, the second guide plate, the third guide plate and the fourth guide plate are connected with the first fixed plate, and the second ends of the first guide plate, the second guide plate, the third guide plate and the fourth guide plate are connected with the second fixed plate, so that the first guide plate, the second guide plate, the third guide plate and the fourth guide plate are fixed on the first fixed plate and the second fixed plate.

[0016] The application has the advantages that: the structure of the application, which is matched by the gas square pipe and the electromagnetic valve, can realize multi-section automatic control, the fire bars of the burner are divided into 2 / 5 sections, 2 rows of fires of the first fire bar are used for ventilation combustion when the ambient temperature is low, 2 rows of fires of the first fire bar and 2 rows of fires of the second fire bar are used for ventilation combustion to heat cold water when the ambient temperature is high, that is, all 5 rows of fires are used for ventilation combustion, the gas proportional valve adjusts the gas amount according to the real-time water temperature load demand, so that the effect of real-time water outlet constant temperature is realized all the time when the ambient temperature changes, the cooperation of the fire bars and the gas flow enables the gas to be fully combusted, and the application has the advantages of low energy efficiency and energy saving. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the preferred embodiments thereof as illustrated in the drawings. In the drawings, like reference numerals refer to like elements throughout the several views, and the drawings are not necessarily drawn to scale, with emphasis being placed upon illustrating the principles of the present application.

[0018] Figure 1 Fig. 1 is a schematic diagram of the overall structure of a water heater according to a preferred embodiment of the present application;

[0019] Figure 2 Fig. 2 is a schematic diagram of the overall structure of the water heater according to the preferred embodiment of the present application from another perspective;

[0020] Figure 3 Fig. 3 is a schematic diagram of the internal structure of the water heater according to the preferred embodiment of the present application;

[0021] Figure 4 Fig. 4 is a schematic diagram of the structure of a burner and a fire control device thereof according to the preferred embodiment of the present application;

[0022] Figure 5 Fig. 5 is a schematic diagram of the structure of a gas square pipe connected with a solenoid valve according to the preferred embodiment of the present application;

[0023] Figure 6 Fig. 6 is a schematic diagram of the structure of the gas square pipe according to the preferred embodiment of the present application;

[0024] Figure 7 Fig. 7 is a sectional view of the gas square pipe connected with the solenoid valve according to the preferred embodiment of the present application;

[0025] Figure 8 Fig. 8 is a schematic diagram of the three-dimensional structure of an air intake and smoke exhaust assembly according to the preferred embodiment of the present application;

[0026] Figure 9 Fig. 9 is a schematic diagram of the cross-sectional structure of the air intake and smoke exhaust assembly according to the preferred embodiment of the present application;

[0027] In the drawings: housing 1; heat exchange chamber 2; controller 4; gas proportional valve 5; water inlet valve 6; water outlet joint 7; burner 8; gas square pipe 10; first fire row 81; second fire row 82; first passage 101; second passage 102; solenoid valve 11; third passage 103; air inlet 14; smoke outlet 15; air intake and smoke exhaust assembly 9; smoke exhaust pipe 16; first guide plate 17; second guide plate 18; third guide plate 19; auxiliary air intake passage 20; air inlet 190; air deflector 191; baffle 192; fourth guide plate 24; first fixed plate 25; second fixed plate 26. DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings.

[0029] It is to be understood that when a component is referred to as being "connected" to another component, it can be directly connected to the other component, or intervening components can be present. The terms "mounted", "one end", "the other end", and the like as used herein are used to describe the relative positioning of components for purposes of explanation only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this technology belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the present technology. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0031] Reference Figures 1-8 The present application provides a flue type gas water heater, including a shell 1, the shell 1 is provided with heat exchange chamber 2 and controller, the shell is provided with gas proportional valve 5, water inlet valve 6 and water outlet connector 7, the first temperature sensor is arranged at water inlet valve 6, the lower end of heat exchange chamber 2 is provided with burner 8, the upper end is provided with heat exchanger, the heat exchanger is located inside the heat exchange chamber, the heat exchanger is connected with water inlet valve 6 and water outlet connector 7 through water pipe respectively, burner 8 is communicated with gas proportional valve 5 through gas square pipe 10, burner 8 includes first fire row 81 and second fire row 82, first channel 101 and second channel 102 are arranged in gas square pipe 10 respectively, the gas outlet end of first channel 101 is communicated with first fire row 81, the gas outlet end of second channel 102 is communicated with second fire row 82, the gas inlet end of first channel 101 and the gas inlet end of second channel are communicated with gas proportional valve, the gas inlet end of second channel is provided with normally closed electromagnetic valve 11, optionally, the model of electromagnetic valve 11 is DC24V, the setting of normally closed electromagnetic valve 11 makes second channel 102 be normally closed state, that is, in normal state, second fire row 82 communicated with second channel 102 does not burn with gas, electromagnetic valve 11 and first temperature sensor are electrically connected with controller. First temperature sensor is used to detect the water temperature T1 of cold water of water inlet valve 6, according to the hot water temperature T2 set by user and the water temperature T1 of cold water, the difference between the two is the heating temperature difference of cold water and hot water, the required heat energy can be calculated according to the heating temperature difference, the use of second fire row 82 is automatically controlled according to the required heat energy, and the size of gas flow of gas proportional valve 5 is controlled to accurately control firepower, so that the technical effect of adjusting firepower to keep the hot water temperature of water outlet connector 7 constant is achieved.

[0032] In the preferred embodiment, the position of water inlet valve 6 is provided with flow sensor, and the flow sensor is electrically connected with the controller.

[0033] In the preferred embodiment, the water inlet valve 6 is integrated with a flow sensor, and the flow sensor is electrically connected with the controller.

[0034] In the preferred embodiment, the second temperature sensor is arranged at the position of the water outlet joint 7, and the second temperature sensor is electrically connected with the controller.

[0035] The first temperature sensor and the flow sensor integrated in the water inlet valve 6 are respectively used for detecting the water inlet temperature T1 and the water inlet flow Q. The second temperature sensor (the water outlet temperature sensor detects the water outlet temperature, i.e., the setting temperature) is arranged at the water outlet joint 7. After the water inlet temperature T1, the water inlet flow Q and the water outlet temperature T2 are obtained, the controller 4 calculates the required load in real time, adjusts the real-time gas flow through the gas proportional valve 5 and the gas square pipe 10, so as to achieve the purpose of automatic constant temperature of the water outlet. Optionally, the gas square pipe 10 is 2 / 5 segmented, and the electromagnetic valve on the gas square pipe 10 is in a normally closed state. When the small load is used for bathing, for example, in summer, only 2 rows of fire are needed to burn, i.e., only the first fire row 81 is kept to burn, and the gas flow is adjusted from small to large through the proportional valve. When the large fire is used for bathing, for example, in winter, the required heat load has exceeded the maximum burning power of 2 rows of fire of the first fire row 81. At this time, the main control detects that the water outlet temperature cannot reach the setting temperature all the time, and the electromagnetic valve on the square pipe is automatically opened to make 5 rows of fire of the first fire row 81 and the second fire row 82 fully burn. At this time, the adjustable range of the load is increased, and the higher bathing load requirement can be met. The scheme of the present application is different from the traditional manual adjustment type winter and summer square pipe, and the fire size can be automatically adjusted to well control the water temperature.

[0036] Reference Figures 5-7 In the preferred embodiment, the third channel 103 is arranged in the gas square pipe 10, the first end of the third channel 103 is communicated with the gas proportional valve 5, the second end of the third channel 103 is respectively provided with a first through hole and a second through hole, the first through hole guides the first channel 101 and the third channel 103, the second through hole guides the second channel 102 and the third channel 103, the gas inlet end of the first channel 101 and the gas inlet end of the second channel 102 are communicated with the gas proportional valve 5 through the third channel 103, and the electromagnetic valve 11 is arranged at the second channel 102. The electromagnetic valve 11 is used for closing or opening the second through hole, so as to realize the conduction or blockage of the second channel 102 and the third channel 103, and realize whether the second fire row 82 works.

[0037] Reference Figures 1-3 In the preferred embodiment, the bottom of the shell 1 is provided with an air inlet 14, the top of the shell 1 is provided with a smoke outlet 15, the top end of the shell 1 is provided with an air inlet and smoke exhaust assembly 9, the air inlet and smoke exhaust assembly 9 is arranged above the burner 8, and the air inlet and smoke exhaust assembly 9 comprises a smoke exhaust pipe 16 which is opposite to the smoke outlet 15.

[0038] ReferenceFigure 1 、 8 and Figure 9 In the preferred embodiment, the air inlet and smoke exhaust assembly 9 comprises a first guide plate 17, a second guide plate 18 and a third guide plate 19 arranged in sequence from top to bottom, the first guide plate 17 is installed at the bottom of the smoke exhaust pipe 16, the first guide plate 17 and the smoke exhaust pipe 16 form an inverted funnel structure, thereby guiding the airflow directly below the first guide plate 17 to the smoke exhaust pipe 16, the second guide plate 18 is located directly below the outer side of the first guide plate 17, the second guide plate 18 is an arc-shaped plate with an arc opening facing upwards, the third guide plate 19 is located directly below the second guide plate 18, the third guide plate 19 is a bent plate with a bent opening facing upwards, an auxiliary air inlet channel 20 is formed between the bottom surface of the second guide plate 18 and the top surface of the third guide plate 19, an air inlet 190 is provided on the third guide plate 19, and a wind deflector 191 is provided on the third guide plate 19 at the position of the air inlet 190, the wind deflector 191 is inclined towards the auxiliary air inlet channel 20.

[0039] Referring to Figure 8 and Figure 9 In the preferred embodiment, there are two second guide plates 18 and two third guide plates 19, which are symmetrically arranged on both sides of the first guide plate 17.

[0040] Referring to Figure 8 and Figure 9 In the preferred embodiment, the bottom of the third guide plate 19 is provided with a baffle 192, the bottom of the first guide plate 17 is provided with a fourth guide plate 24, the fourth guide plate 24 is an arc-shaped plate with an arc opening facing upwards, and the fourth guide plate 24 is located at a position between the two second guide plates 18. Figure 9 The arrows in the figure show the air flow path of the supplementary air helping combustion and the exhaust gas flow path of the exhaust gas discharged through the smoke exhaust port 15. The air inlet 14 below the air inlet port 14 ensures sufficient combustion of the gas, the air inlet channel 20 above the air inlet port 14 assists combustion and effectively dissipates heat, which realizes sufficient combustion to ensure the temperature rise of the cover, while reducing the noise problem caused by the side opening of the bottom cover; the new structure has the advantages of stable combustion, low noise, automatic constant temperature, low manufacturing and development cost, and the reliability and durability of the whole machine can reach the level of strong exhaust machines.

[0041] Referring to Figure 8 In the preferred embodiment, the air inlet and smoke exhaust assembly 9 further comprises a first fixed plate 25 and a second fixed plate 26, the first fixed plate 25 and the second fixed plate 26 are oppositely arranged, the first ends of the first guide plate 17, the second guide plate 18, the third guide plate 19 and the fourth guide plate 24 are connected with the first fixed plate 25, the second ends of the first guide plate 17, the second guide plate 18, the third guide plate 19 and the fourth guide plate 24 are connected with the second fixed plate 26, so that the two ends of the first guide plate 17, the second guide plate 18, the third guide plate 19 and the fourth guide plate 24 are respectively erected and fixed on the first fixed plate 25 and the second fixed plate 26.

[0042] In the present application, unless specifically stated and limited otherwise, a first feature "on" or "under" a second feature can be directly contacting the first and second features, or indirectly contacting the first and second features through an intermediate medium. Also, a first feature "over", "above" and "on top of" a second feature can be directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. A first feature "under", "below" and "underneath" a second feature can be directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0043] In the description of the present application, the description of the terms "preferred embodiment", "still another embodiment", "other embodiments" or "specific examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0044] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary, and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A flued gas water heater characterised in that, The utility model provides a kind of gas water heater, including shell, heat exchange chamber and controller are arranged in the shell, gas proportional valve, inlet water valve and outlet water joint are installed on the shell, first temperature sensor is arranged at inlet water valve, the lower end of heat exchange chamber is provided with burner, and the upper end is provided with heat exchanger, and the heat exchanger is connected with inlet water valve and outlet water joint respectively by water pipe, and burner is communicated with gas proportional valve by gas square tube, and burner includes first fire row and second fire row, first channel and second channel are arranged in gas square tube respectively, the outlet of first channel is communicated with first fire row, the outlet of second channel is communicated with second fire row, the inlet of first channel and the inlet of second channel are communicated with gas proportional valve, and the inlet of second channel is connected with the electromagnetic valve of normally closed type, and the electromagnetic valve and first temperature sensor are electrically connected with controller.

2. The gas water heater of claim 1, wherein, Flow sensor is arranged at the position of inlet water valve, and the flow sensor is electrically connected with the controller.

3. The gas water heater of claim 1, wherein the gas burner is positioned in the combustion chamber. Flow sensor is integrated in inlet water valve, and the flow sensor is electrically connected with the controller.

4. A gas water heater as claimed in claim 2 or 3 wherein, Second temperature sensor is arranged at the position of outlet water joint, and the second temperature sensor is electrically connected with the controller.

5. The gas water heater of claim 1, wherein the gas burner is positioned within the combustion chamber. Third channel is arranged in gas square tube, the first end of third channel is communicated with gas proportional valve, the second end of third channel is respectively provided with first through hole and second through hole, the first through hole is communicated with first channel and third channel, the second through hole is communicated with second channel and third channel, the inlet of first channel and the inlet of second channel are communicated with gas proportional valve through third channel, and the electromagnetic valve is located at second channel, and the electromagnetic valve is used to close or open second through hole.

6. The gas water heater of claim 1, wherein, Air inlet is arranged at the bottom of shell, smoke outlet is arranged at the top of shell, air inlet and smoke outlet assembly is installed at the top end of shell, air inlet and smoke outlet assembly is located above burner, and air inlet and smoke outlet assembly includes smoke pipe, and smoke pipe is opposite to smoke outlet.

7. A gas water heater as claimed in claim 6 wherein, Air inlet and smoke outlet assembly includes first guide plate, second guide plate and third guide plate arranged from top to bottom, first guide plate is installed at the bottom of smoke pipe, first guide plate and smoke pipe form an inverted funnel structure, and air flow below first guide plate is guided to smoke pipe, second guide plate is located below the outer side of first guide plate, second guide plate is arc-shaped plate with arc opening upward, third guide plate is located below second guide plate, third guide plate is bending plate with bending opening upward, auxiliary air inlet channel is formed between the bottom surface of second guide plate and the top surface of third guide plate, air inlet is arranged on third guide plate, air deflector is arranged on third guide plate at the position of air inlet, and air deflector is inclined towards air inlet channel.

8. A gas water heater as claimed in claim 7 wherein, Second guide plate and third guide plate are both two, and two second guide plates and third guide plates are symmetrically arranged on both sides of first guide plate.

9. The gas water heater of claim 7, wherein the gas burner is positioned in the combustion chamber such that the flame is directed toward the heat exchanger. The bottom of the third guide plate is provided with a baffle, the lower side of the first guide plate is provided with a fourth guide plate, the fourth guide plate is an arc-shaped plate with an arc opening facing upwards, and the fourth guide plate is located between the two second guide plates.

10. The gas water heater of claim 9, wherein the controller is configured to: The air inlet and smoke exhaust assembly further comprises a first fixed plate and a second fixed plate, the first fixed plate and the second fixed plate are oppositely arranged, the first end of the first guide plate, the second guide plate, the third guide plate and the fourth guide plate is connected with the first fixed plate, and the second end of the first guide plate, the second guide plate, the third guide plate and the fourth guide plate is connected with the second fixed plate, so that the first guide plate, the second guide plate, the third guide plate and the fourth guide plate are fixed on the first fixed plate and the second fixed plate.

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