CN216048333U

CN216048333U - Gas water heater

Info

Publication number: CN216048333U
Application number: CN202122353993.9U
Authority: CN
Inventors: 卢宇聪; 钟益明
Original assignee: Guangdong Vanward New Electric Co Ltd
Current assignee: Guangdong Vanward New Electric Co Ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-03-15
Anticipated expiration: 2031-09-27

Abstract

The utility model relates to a gas water heater, which comprises a heat exchanger, a burner, a water inlet pipe, a water outlet pipe and an auxiliary electric heater, wherein the burner is arranged on the heat exchanger; the water inlet pipe, the heat exchanger and the water outlet pipe are sequentially connected to form a heating water path; the combustor corresponds the heat exchanger setting, and auxiliary electric heater sets up on heating the water course, and auxiliary electric heater includes the shell and locates the graphite alkene heating tube in the shell, is provided with the binding post that is used for connecting external power on the graphite alkene heating tube. Through set up supplementary electric heater on heating the water course, when needs carry out the micro-heating to the water, can start supplementary electric heater and carry out the electrical heating to the water to satisfy the required temperature of user, travelling comfort when effectively guaranteeing the user's bathing improves user's use and experiences the sense. In addition, under the condition that no fuel gas or insufficient fuel gas exists, the auxiliary electric heater can be directly started to heat water, great convenience is provided for users, and the use experience of the users is further improved.

Description

Gas water heater

Technical Field

The utility model relates to the technical field of water heaters, in particular to a gas water heater.

Background

With the improvement of living standard of people, the gas water heater enters thousands of households and is deeply loved by the majority of users. The gas water heater is also called as a gas water heater, and refers to a gas appliance which takes gas as fuel and transfers heat to cold water flowing through a heat exchanger in a combustion heating mode so as to achieve the purpose of preparing hot water.

The traditional gas water heater has the problem that the temperature of outlet water is too high in summer, so that the comfort of a user in bathing is influenced, and the temperature adjusting range is too small due to the fact that the heat load of the traditional gas water heater is adjusted to be small. Specifically, the ratio of the maximum heat load to the minimum heat load of a gas water heater is generally 5:1, for example, a water heater with a water generating capacity of 10 liters, and if the rated heat load is 20kW, the minimum heat load is about 4 kW. When the gas water heater needs to slightly heat water in a water pipe, such as in summer in the south, the water volume used by a user for bathing is 6 liters/minute, the water outlet temperature is set to be 38 ℃, the temperature of cold water entering the gas water heater reaches 32 ℃, if the gas water heater is started to heat the cold water flowing through the water heater at 32 ℃ with the minimum load, the water outlet temperature of the water heater can reach 8.3 ℃, namely the water outlet temperature can reach 40.3 ℃, and exceeds 38 ℃ set by the user, so that the use experience of the user is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a gas water heater which can effectively meet the water temperature required by a user and effectively ensure the comfort of the user in bathing.

The technical problem is solved by the following technical scheme:

a gas water heater comprises a heat exchanger, a burner, a water inlet pipe, a water outlet pipe and an auxiliary electric heater; the water inlet pipe, the heat exchanger and the water outlet pipe are sequentially connected to form a heating water path; the combustor corresponds the heat exchanger setting, supplementary electric heater sets up on heating the water route, supplementary electric heater includes the shell and locates the graphite alkene heating tube in the shell, be provided with the binding post that is used for connecting external power on the graphite alkene heating tube.

Compared with the background technology, the gas water heater of the utility model has the following beneficial effects: through set up supplementary electric heater on heating the water course, when needs carry out the micro-heating to the water, can start supplementary electric heater and carry out the electrical heating to the water to satisfy the required water temperature of user, travelling comfort when effectively guaranteeing the user's bathing improves user's use and experiences the sense. In addition, under the condition that no fuel gas or insufficient fuel gas exists, the auxiliary electric heater can be directly started to heat water, great convenience is provided for users, and the use experience of the users is further improved. The auxiliary electric heater adopts the graphite alkene heating tube, and graphite alkene heating tube has characteristics such as high speed, high-effect, high strength and wide temperature range.

In one embodiment, the auxiliary electric heater further comprises a heat insulation sleeve arranged on the outer surface of the graphene heating tube.

In one embodiment, the auxiliary electric heater further comprises a reflective aluminum foil wrapped around the outer surface of the heat insulating sleeve.

In one embodiment, the auxiliary electric heater is arranged on the water outlet pipe or the water inlet pipe; when the quantity of supplementary electric heater is a plurality of, it is a plurality of supplementary electric heater all overlaps and establishes on the outlet pipe, or, it is a plurality of supplementary electric heater all sets up on the inlet tube, or, part supplementary electric heater sets up on the outlet pipe, another part supplementary electric heater sets up on the inlet tube.

In one embodiment, the water heater further comprises a positioning member, and the positioning member fixes the auxiliary electric heater on the water outlet pipe or the water inlet pipe.

In one embodiment, the graphene heating tube comprises a sleeve and a coating structure arranged on the sleeve, and the sleeve is sleeved on the water outlet tube or the water inlet tube; the coating structure comprises a bottom coating insulating layer, a metal electrode layer, a graphene layer, an insulating packaging layer and an infrared reflecting layer which are sequentially arranged, and the wiring terminal is connected with the metal electrode layer.

In one embodiment, the ferrule is made of a ceramic substrate or a glass substrate.

In one embodiment, the thickness of the side wall of the ferrule is 0.05-10 mn; and/or the thickness of the bottom coating insulating layer is 10 um-20 um; and/or the thickness of the metal electrode layer is 3 um-6 um; and/or the thickness of the graphene layer is 3 um-15 um; and/or the thickness of the insulating packaging layer is 10 um-20 um; and/or the infrared reflecting layer is 3 um-6 um.

In one embodiment, the auxiliary electric heater further comprises an overheat protector or a thermostat disposed in the graphene heat pipe.

In one embodiment, the water heater further comprises an inlet water temperature sensor and an outlet water temperature sensor, wherein the inlet water temperature sensor is arranged on the inlet water pipe and is positioned upstream of the auxiliary electric heater along the water flow direction of the heating water path; the water outlet temperature sensor is arranged on the water outlet pipe and is positioned at the downstream of the auxiliary electric heater along the water flow direction of the heating water path; and/or, the gas water heater still includes water flow sensor, water flow sensor sets up on the inlet tube, and follow the rivers direction in heating water route is located auxiliary electric heater's upper reaches.

Drawings

Fig. 1 is a schematic structural view of a gas burner according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the auxiliary electric heater of the gas water heater of FIG. 1;

fig. 3 is a structural view illustrating a coating structure of the auxiliary electric heater shown in fig. 2.

The meaning of the reference symbols in the drawings is:

the heat exchanger 10, the combustor 20, the water inlet pipe 30, the water outlet pipe 40, the auxiliary electric heater 50, the shell 51, the graphene heating pipe 52, the wiring terminal 53, the positioning piece 54, the coating structure 56, the sleeve 59, the bottom coating insulating layer 562, the metal electrode layer 563, the graphene layer 564, the insulating packaging layer 565, the infrared reflecting layer 566, the heat insulating sleeve 55, the reflective aluminum foil 57, the annular wiring base 58, the controller 60, the water inlet temperature sensor 70, the water outlet temperature sensor 80, the water flow sensor 90, the fan 100, the smoke exhauster 110, the gas valve 120, the water pump 130, the hot water pipe 140, the cold water pipe 150, the water end 160, the check valve 170, and the bypass circuit 180.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" 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 defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 3, a gas water heater according to an embodiment of the present invention includes a heat exchanger 10, a burner 20, a water inlet pipe 30, a water outlet pipe 40, and an auxiliary electric heater 50. The water inlet pipe 30, the heat exchanger 10 and the water outlet pipe 40 are connected in sequence to form a heating water path. One end of the water inlet pipe 30 far away from the heat exchanger 10 is connected with an external tap water pipe, one end of the water outlet pipe 40 far away from the heat exchanger 10 is connected with the water using end 160, water in the external tap water pipe enters the heat exchanger 10 through the water inlet pipe 30, and the heated water flows to the water using end 160 through the water outlet pipe 40. The combustor 20 is arranged corresponding to the heat exchanger 10, the auxiliary electric heater 50 is arranged on a heating water circuit, the auxiliary electric heater 50 comprises a shell 51 and a graphene heating tube 52 arranged in the shell 5, and two ends of the graphene heating tube 52 are respectively provided with a connecting terminal 53 for connecting an external power supply.

For example, when the temperature rise to be heated is equal to or greater than the minimum load temperature for gas heating, the burner 20 is started, the burner 20 burns the gas to generate high-temperature flue gas, the heat in the high-temperature flue gas is transferred to the heat exchanger 10 to heat the water flowing through the heat exchanger 10, and the auxiliary electric heater 50 stops operating during the operation of the burner 20. When the temperature rise required for heating is lower than the minimum load temperature for gas heating, the auxiliary electric heater 50 is started to heat the water flowing through the graphene heating tube 52, and the burner 20 stops operating during the operation of the auxiliary electric heater 50. When there is no or insufficient gas, the auxiliary electric heater 50 is activated to heat the water flowing through the graphene heat pipe 52.

According to the gas water heater, the auxiliary electric heater 50 is arranged on the heating water circuit, when the water needs to be slightly heated, namely the water temperature is not high, and the heating temperature which cannot be reached during gas heating is reached, the auxiliary electric heater 50 can be started to electrically heat the water, so that the water temperature required by a user is met, the comfort of the user during bathing is effectively guaranteed, and the use experience of the user is improved. In addition, under the condition that no gas exists or the gas is insufficient, the electric energy can be used as an auxiliary energy source of the gas water heater, the auxiliary electric heater 50 can be directly started to heat water, great convenience is provided for users, and the use experience of the users is further improved. The auxiliary electric heater 50 adopts the graphene heating tube 52, and the graphene heating tube 52 has the characteristics of high speed, high efficiency, high strength, wide temperature range and the like, and specifically, the graphene heating tube 52 has small thermal inertia, can be heated when heated, and can be cooled when power is cut off, the electric-heat conversion rate can reach 95% -99%, the energy can be saved by about 10% -70% compared with the traditional electric heating tube, the vibration resistance and thermal shock resistance are strong, and the sustainable dry burning at 70 ℃ -600 ℃.

The gas water heater further comprises a controller 60, the controller 60 is electrically connected with the auxiliary electric heater 50, and the controller 60 is used for controlling the operation of the auxiliary electric heater 50, for example, the controller 60 connects an external power supply to the auxiliary electric heater 50 to control the on/off of the auxiliary electric heater 50 by the external power supply. In this embodiment, the external power source is 220V commercial power.

The auxiliary electric heater 50 is provided on the water outlet pipe 40 or the water inlet pipe 30. When the number of the auxiliary electric heaters 50 is plural, the plural auxiliary electric heaters 50 are all sleeved on the water outlet pipe 40, or the plural auxiliary electric heaters 50 are all arranged on the water inlet pipe 30, or a part of the auxiliary electric heaters 50 are arranged on the water outlet pipe 40, and another part of the auxiliary electric heaters 50 are arranged on the water inlet pipe 30.

Further, the gas water heater further includes a positioning member 54, and the positioning member 54 fixes the auxiliary electric heater 50 to the water outlet pipe 40 or the water inlet pipe 30. Specifically, the positioning element 54 is an annular body, the positioning element 54 is fixedly sleeved on the water outlet pipe 40 or the water inlet pipe 30, and the positioning element 54 abuts against the housing 51.

The graphene heating tube 52 includes a socket 59 and a coating structure 56 disposed on the socket 59. The sleeve 59 is disposed on the water outlet pipe 40 or the water inlet pipe 30, and specifically, the sleeve 59 is sleeved on the water outlet pipe 40 or the water inlet pipe 30. The socket pipe 59 is a ceramic pipe or a glass pipe, i.e., the socket pipe 59 is made of ceramic substrate or glass substrate, and can play a role in supporting and supporting the coating structure 56, and meanwhile, the socket pipe is hard and not easy to deform, and can be firmly and stably arranged on the water outlet pipe 40 or the water inlet pipe 30. Further, the thickness of the side wall of the ferrule 59 is 0.05mn to 10 mn. The coating structure 56 includes a primer insulating layer 562, a metal electrode layer 563, a graphene layer 564, an insulating encapsulation layer 565, and an infrared reflection layer 566, which are sequentially disposed. The metal electrode layer 563 is a noble metal electrode layer 563, the metal electrode layer 563 is used for conduction, and the connection terminal 53 is connected to the metal electrode layer 563. Further, the auxiliary electric heater 50 further includes an annular wire holder 58, the annular wire holder 58 is sleeved on the graphene heating tube 52 and compresses the wiring terminal 53 on the graphene heating tube 52, so that the wiring terminal 53 can be effectively contacted with the metal electrode layer 563, and the stability of the metal electrode layer 563 during power-on can be ensured. Through setting up first coat insulating layer 562, effectively prevent metal electrode layer 563 and water contact, realize water, the electricity is complete to be separated, and the security is high. Further, the thickness of the undercoat insulating layer 562 is 10um to 20 um. The thickness of the metal electrode layer 563 is 3um to 6 um. The thermal conductivity of graphene layer 564 is greater than 400W/m.K, the thickness of graphene layer 564 is 3um ~ 15um, the thickness of insulating encapsulation layer 565 is 10um ~ 20um, infrared reflection layer 566 is 3um ~ 6 um.

Referring to fig. 2, in some embodiments, the auxiliary electric heater 50 further includes a heat insulation sleeve 55 disposed on the outer surface of the graphene heating tube 52 and a reflective aluminum foil 57 wrapped on the outer surface of the heat insulation sleeve 55, it can be understood that the heat insulation sleeve 55 is disposed on the infrared reflective layer 566 of the graphene heating tube 52, and the heat insulation sleeve 55 and the reflective aluminum foil 57 are located between the graphene heating tube 52 and the housing 51, and the heat insulation sleeve 55 is disposed on the outer surface of the graphene heating tube 52 to prevent heat dissipation on the graphene heating tube 52, and the reflective aluminum foil 57 is wrapped around the heat insulation sleeve 55 to further prevent heat dissipation, reduce energy consumption, and save cost.

In some embodiments, the auxiliary electric heater 50 further includes an overheat protector or a thermostat disposed in the graphene heating tube 52, and the overheat protector or the thermostat is used to prevent the auxiliary electric heater 50 from heating the water too high, or the heating control function of the auxiliary electric heater 50 is disabled. Specifically, the overheat protector or the temperature controller is electrically connected to the controller 60, and if the heating temperature of the water in the graphene heating tube 52 is too high, the overheat protector or the temperature controller sends a signal to the controller 60, and the controller 60 stops the operation of the auxiliary electric heater 50 according to the signal, so as to stop continuously heating the water.

Referring again to fig. 1, in some embodiments, the gas water heater further includes an inlet water temperature sensor 70, an outlet water temperature sensor 80, and a water flow sensor 90, wherein the inlet water temperature sensor 70, the outlet water temperature sensor 80, and the water flow sensor 90 are electrically connected to the controller 60. The inlet water temperature sensor 70 is disposed on the inlet pipe 30 and located upstream of the auxiliary electric heater 50 in a water flow direction of the heating water path, and the inlet water temperature sensor 70 is used for sensing the inlet water temperature in the inlet pipe 30. The outlet temperature sensor 80 is disposed on the outlet pipe 40 and located downstream of the auxiliary electric heater 50 along the water flow direction of the heating water path, and the outlet temperature sensor 80 is configured to sense the heated outlet temperature. The water flow sensor 90 is disposed on the water inlet pipe 30 and located upstream of the auxiliary electric heater 50 in a water flow direction of the heating water path, and the water flow sensor 90 is used for sensing a water inlet flow of the water inlet pipe 30.

The gas water heater further comprises a fan 100, a smoke exhauster 110 and a gas valve 120, wherein the fan 100 is used for pumping outside air to the combustor 20, the smoke exhauster 110 is used for exhausting smoke generated during combustion of the combustor 20, the gas valve 120 is connected with the combustor 20, and the gas valve 120 is further electrically connected with the controller 60. Specifically, the gas valve 120 is disposed on a pipe connected to a gas inlet of the burner 20, and when the burner 20 is used, the gas valve 120 is opened, and gas flows to the burner 20 through the gas valve 120 to be combusted; when the burner 20 is not in use, the gas valve 120 is closed.

In some embodiments, the gas water heater is further connected to a circulating preheating water circuit, the circulating preheating water circuit includes a water pump 130, a hot water pipe 140, a cold water pipe 150 and a bypass branch 180, the water pump 130 is disposed on the water inlet pipe 30, the water pump 130 is electrically connected to the controller 60, the hot water pipe 140 is connected to the water outlet pipe 40, the cold water pipe 150 is connected to the water inlet pipe 30, the bypass branch 180 is connected between the hot water pipe 140 and the cold water pipe 150, and a junction of the hot water pipe 140 and the cold water pipe 150 is connected to the useful water end 160. When the water route was preheated in the needs, start water pump 130, water pump 130 pumps the water in the water route was preheated in the circulation and heats in heating the water route to guarantee that the user can both use hot water at any time. Specifically, the water pump 130 pumps the water in the cold water pipe 150 into the water inlet pipe 30, and the water in the water inlet pipe 30 is heated by the heat exchanger 10 or the auxiliary electric heater 50 and then flows to the hot water pipe 140 through the water outlet pipe 40, so that the user can use the hot water by opening the water end 160.

Further, a check valve 170 is disposed on a bypass branch 180 between the cold water pipe 150 and the hot water pipe 140. The check valve 170 allows water in the hot water pipe 140 to flow to the cold water pipe 150, prevents the water in the cold water pipe 150 from flowing to the hot water pipe 140, and effectively prevents unheated water in the cold water pipe 150 from entering the hot water pipe 140 to affect the use of a user.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A gas water heater is characterized by comprising a heat exchanger (10), a burner (20), a water inlet pipe (30), a water outlet pipe (40) and an auxiliary electric heater (50); the water inlet pipe (30), the heat exchanger (10) and the water outlet pipe (40) are sequentially connected to form a heating water path; the burner (20) is arranged corresponding to the heat exchanger (10), the auxiliary electric heater (50) is arranged on the heating water circuit, the auxiliary electric heater (50) comprises a shell (51) and a graphene heating tube (52) arranged in the shell (51), and a wiring terminal (53) used for connecting an external power supply is arranged on the graphene heating tube (52).

2. The gas water heater of claim 1, wherein the auxiliary electric heater (50) further comprises a thermal insulating jacket (55) disposed on an outer surface of the graphene heat pipe (52).

3. The gas water heater of claim 2, wherein the auxiliary electric heater (50) further comprises a reflective aluminum foil (57) wrapped on an outer surface of the insulating sleeve (55).

4. Gas water heater according to claim 2, characterized in that said auxiliary electric heater (50) is arranged on said outlet pipe (40) or on said inlet pipe (30); when the quantity of auxiliary electric heater (50) is a plurality of, it is a plurality of auxiliary electric heater (50) all overlap and establish on outlet pipe (40), or, a plurality of auxiliary electric heater (50) all set up on inlet tube (30), or, part auxiliary electric heater (50) set up on outlet pipe (40), another part auxiliary electric heater (50) set up on inlet tube (30).

5. The gas water heater of claim 4, further comprising a retainer (54), said retainer (54) securing said auxiliary electric heater (50) to said outlet pipe (40) or said inlet pipe (30).

6. The gas water heater of claim 1, wherein the graphene heating tube (52) comprises a socket (59) and a coating structure (56) disposed on the socket (59), the socket (59) being fitted over the outlet pipe (40) or the inlet pipe (30); the coating structure (56) comprises a bottom coating insulating layer (562), a metal electrode layer (563), a graphene layer (564), an insulating packaging layer (565) and an infrared reflecting layer (566) which are sequentially arranged, and the wiring terminal (53) is connected with the metal electrode layer (563).

7. Gas water heater according to claim 6, characterized in that the socket (59) is made of ceramic or glass substrate.

8. The gas water heater of claim 6, wherein the thickness of the side wall of the socket (59) is 0.05-10 mn; and/or the thickness of the bottom coating insulating layer (562) is 10 um-20 um; and/or the thickness of the metal electrode layer (563) is 3 um-6 um; and/or the thickness of the graphene layer (564) is 3 um-15 um; and/or the thickness of the insulating packaging layer (565) is 10 um-20 um; and/or the infrared reflecting layer (566) is 3 um-6 um.

9. The gas water heater of claim 1, wherein the auxiliary electric heater (50) further comprises an overheat protector or thermostat provided within the graphene heating tube (52).

10. The gas water heater of claim 1, further comprising an inlet water temperature sensor (70) and an outlet water temperature sensor (80), wherein the inlet water temperature sensor (70) is disposed on the inlet pipe (30) and is located upstream of the auxiliary electric heater (50) in a water flow direction of the heating water circuit; the water outlet temperature sensor (80) is arranged on the water outlet pipe (40) and is positioned at the downstream of the auxiliary electric heater (50) along the water flow direction of the heating water path; and/or, the gas water heater also comprises a water flow sensor (90), and the water flow sensor (90) is arranged on the water inlet pipe (30) and is positioned at the upstream of the auxiliary electric heater (50) along the water flow direction of the heating water path.