Anti-freezing protection gas water heater

Abstract

The utility model provides an anti-freezing protection gas water heater, belongs to the technical field of water heaters, mainly aims at the problem that a traditional gas water heater is easily influenced by a low-temperature environment, and adopts the technical scheme that the anti-freezing protection gas water heater comprises a shell, a mounting cavity is formed in one side of the shell, a gas combustion chamber is arranged in the mounting cavity, and a water inlet pipe is arranged at the bottom of the shell; one end of the water inlet pipe is connected with the heating water pipe, and a heat exchanger is arranged at the top of the gas combustion chamber; a water tank is further arranged in the mounting cavity, a heating backflow assembly is arranged at the top of the water tank, and a controller is arranged on the front face of the shell; through the arrangement of the heating water pipe, the heating water pipe surrounding the peripheral side can be heated through the fuel gas combustion chamber, so that water in the middle pipeline is prevented from being frozen; and the water in the water tank is circularly heated through the heat exchanger by virtue of the temperature rise backflow assembly, so that the problem that a traditional gas water heater is easily influenced by a low-temperature environment is solved, and the water heater is prevented from being damaged by freezing expansion of the water.

Description

Technical Field

[0001] The utility model belongs to the technical field of water heaters, and more specifically, particularly relates to a gas water heater with antifreeze protection. Background Art

[0002] In modern life, as an important household and commercial device, a gas water heater provides people with comfortable hot water supply and a warm indoor environment.

[0003] For example, the Chinese utility model patent with the patent number 202122894468.8 provides a gas water heater. Through the settings of a furnace body, an air inlet pipe, a heating mechanism, a heat exchanger, and a hot water pipe, when in use, gas enters the heating mechanism in the furnace body through the air inlet pipe, the heating mechanism burns the gas to heat the heat exchanger, and then the heat exchanger transfers the heat to the hot water pipe to supply hot water and for heating; however, in some severely cold areas, traditional gas water heaters are easily affected by low-temperature environments, and the water inside the water heater may freeze and expand in volume, thus damaging the pipes and the water tank and affecting the normal use of the device. Summary of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a gas water heater with antifreeze protection to solve the technical problems in the prior art that traditional gas water heaters are easily affected by low-temperature environments, the water inside the water heater may freeze and expand in volume, thus damaging the pipes and the water tank and affecting the normal use of the device.

[0005] The purpose and efficacy of a gas water heater with antifreeze protection of the utility model are achieved by the following specific technical means:

[0006] A gas water heater with antifreeze protection includes a housing. An installation cavity is provided on one side of the housing. A gas combustion chamber is provided in the installation cavity. A water inlet pipe is provided at the bottom of the housing. A temperature-rising water pipe is wound around the outside of the gas combustion chamber. One end of the water inlet pipe is connected to the temperature-rising water pipe. A heat exchanger is provided at the top of the gas combustion chamber. A water tank is also provided in the installation cavity. A temperature-rising return assembly is provided at the top of the water tank. A controller is provided on the front of the housing.

[0007] In a preferred embodiment, the temperature-rising return assembly includes a circulation pump. The bottom of the circulation pump is connected to the water tank through a pipeline. A temperature-rising return pipe is provided on one side of the circulation pump. A through first heat exchange hole is formed in the heat exchanger. The temperature-rising return pipe passes through the first heat exchange hole and is connected to the water tank.

[0008] In a preferred embodiment, the heating and reflux assembly further includes a first temperature sensor, which is disposed on the top of the water tank, and both the first temperature sensor and the circulation pump are electrically connected to the controller.

[0009] In a preferred embodiment, a second temperature sensor is disposed at the bottom of the installation cavity, the second temperature sensor faces the water inlet pipe, and both the gas combustion chamber and the second temperature sensor are electrically connected to the controller.

[0010] In a preferred embodiment, two groups of second heat exchange holes are formed in the heat exchanger, and the same group of heat exchange water pipes are passed through the two groups of second heat exchange holes. One end of the heat exchange water pipe is connected to the heating water pipe, and the other end is connected to the water tank.

[0011] In a preferred embodiment, a water outlet pump is disposed on the top of the water tank. The water inlet end of the water outlet pump is connected to the water tank through a pipeline, the water outlet end of the water outlet pump is connected to an electromagnetic diverter valve, and a heating water pipe and a domestic water pipe are disposed on one side of the electromagnetic diverter valve.

[0012] In a preferred embodiment, an installation back plate is disposed on the back of the housing, an exhaust gas discharge device is disposed in the installation cavity, one side of the gas combustion chamber is connected to the exhaust gas discharge device through a gas pipe, a through hole is formed in the installation back plate corresponding to the exhaust gas discharge device, and the exhaust pipe of the exhaust gas discharge device is passed through the through hole.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. Through the setting of the heating and reflux assembly, when using the water heater, the water temperature in the water tank is detected by the first temperature sensor. If the water temperature reaches a dangerous value where it may freeze, a signal will be transmitted to the controller, and the circulation pump will be started by the controller, so that the water in the water tank flows through the heat exchanger through the heating and reflux pipe for heating, and then returns to the water tank to form a circulating heating; at the same time, the second temperature sensor at the bottom of the installation cavity can monitor the temperature of the water inlet pipe. When the temperature of the water inlet pipe is detected to be too low, through the combustion of the gas combustion chamber, the heating water pipe surrounding the gas combustion chamber is heated to prevent the water in the pipeline from freezing, solving the problem that the traditional gas water heater is easily affected by low temperature environment, avoiding the damage to the water heater caused by the expansion of frozen water, and improving the stability and safety of the water heater in low temperature environment.

[0015] 2. Two groups of second heat exchange holes are opened on the heat exchanger, and the heat exchange water pipes are passed through them. One end of the heat exchange water pipe is connected to the heating water pipe, and the other end is connected to the water tank, realizing efficient heat exchange, enabling the heat generated by gas combustion to be fully transferred to the water flow, improving the energy utilization efficiency, and also being able to isolate the heat exchange water pipe from the external environment, reducing the risk of the pipeline being frozen; at the same time, the water pump at the top of the water tank is connected to the electromagnetic flow divider valve, which can deliver hot water to the heating water pipe and the domestic water pipe respectively according to user needs, meeting the diverse needs of users; whether it is winter heating or daily domestic water use, a stable and reliable hot water supply can be obtained, improving the practicability of this water heater.

[0016] 3. Through the setting of the installation back plate, the installation of this gas water heater is facilitated. It can be installed in a suitable position by connecting with a hook or by fixing it with screws, saving installation time; the exhaust gas discharge device in the installation cavity can timely discharge the exhaust gas generated by gas combustion. This independent exhaust gas discharge channel not only is beneficial to the normal operation of the combustion chamber but also avoids the reverse flow of exhaust gas caused by low temperature, further improving the safety of this water heater. Brief Description of the Drawings

[0017] Figure 1 It is a structural schematic diagram of a gas water heater with anti-freezing protection of the present utility model;

[0018] Figure 2 It is an exploded view of a gas water heater with anti-freezing protection of the present utility model;

[0019] Figure 3 It is a structural schematic diagram of the heating and reflux assembly in a gas water heater with anti-freezing protection of the present utility model;

[0020] Figure 4 It is Figure 3 The structural schematic diagram after splitting.

[0021] In the figure, the corresponding relationship between the component names and the drawing reference numbers is as follows:

[0022] 11. Outer shell; 12. Installation cavity; 13. Gas combustion chamber; 14. Water inlet pipe; 15. Heat exchanger; 16. Water tank; 17. Controller; 18. Installation back plate; 21. Heating water pipe; 22. Circulation pump; 23. Heating and reflux pipe; 24. First heat exchange hole; 25. First temperature sensor; 26. Second temperature sensor; 31. Second heat exchange hole; 32. Heat exchange water pipe; 33. Water pump; 34. Electromagnetic flow divider valve; 35. Heating water pipe; 36. Domestic water pipe; 37. Exhaust gas discharge device. Detailed Description of the Invention

[0023] The following further describes in detail the embodiments of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0024] Embodiment:

[0025] As shown in the Figure 1 to Figure 4 accompanying drawings:

[0026] The present utility model provides a gas water heater with anti-freeze protection, including a housing 11. An installation cavity 12 is provided on one side of the housing 11. Inside the installation cavity 12, there is a gas combustion chamber 13, which provides the heat required for the entire hot water system. A heating water pipe 21 is surrounded outside the gas combustion chamber 13. A water inlet pipe 14 is provided at the bottom of the housing 11. One end of the water inlet pipe 14 is connected to the heating water pipe 21. A heat exchanger 15 is located at the top of the gas combustion chamber 13. A water tank 16 is also provided in the installation cavity 12 for storing and outputting the heated hot water. In addition, a controller 17 is provided on the front of the housing 11.

[0027] Please refer to Figure 3 as Figure 4 shown. The heating and reflux assembly includes a circulation pump 22 and a heating and reflux pipe 23. The bottom of the circulation pump 22 is connected to the water tank 16 through a pipeline, and can extract the water in the water tank 16. A heating and reflux pipe 23 is provided on one side of the circulation pump 22. This pipeline passes through the first heat exchange hole 24 opened on the heat exchanger 15 and finally is connected to the water tank 16. By starting the circulation pump 22, the water in the water tank 16 will continuously flow through the heating and reflux pipe 23, continuously heat up under the action of the heat exchanger 15, and then flow back to the water tank 16, forming a closed-loop circulation heating process. Utilizing the heat of the heat exchanger 15, it effectively prevents the water body inside the water tank 16 from freezing and expanding in volume, thereby avoiding damage to the water tank 16 itself.

[0028] Please refer to Figure 2 as Figure 3As shown in the figure, the heating and reflux assembly further includes a first temperature sensor 25, which is installed on the top of the water tank 16 to monitor the temperature change of the water body inside the water tank 16 in real time. Once it detects that the water temperature may drop to a dangerous value of freezing, the first temperature sensor 25 will transmit this information to the controller 17 in a timely manner. After receiving the warning signal, the controller 17 will immediately start the circulation pump 22 located at the bottom of the water tank 16, so that the water in the water tank 16 is continuously heated at the heat exchanger 15 through the heating and reflux pipe 23, thus effectively avoiding the risk of water body freezing. This linkage mechanism based on temperature monitoring ensures that even in a severe cold environment, the water heater can automatically take necessary anti-freezing measures to maintain the safe operation of the water tank 16. Through the coordinated cooperation of the first temperature sensor 25 and the controller 17, the anti-freezing performance of the gas water heater under low temperature conditions is further enhanced.

[0029] Please refer to as Figure 3 With Figure 4 As shown in the figure, a second temperature sensor 26 is provided at the bottom of the installation cavity 12. The second temperature sensor 26 directly faces the water inlet pipe 14 and can monitor the temperature change of the water body inside the water inlet pipe 14 in real time. Once it detects that the temperature of the water inlet pipe 14 is too low, which may cause the water body to freeze, the second temperature sensor 26 will transmit this information to the controller 17. After receiving the warning signal, the controller 17 will immediately start the gas combustion chamber 13 located inside the installation cavity 12, and through its continuous combustion effect, heat the heating water pipe 21 surrounding the gas combustion chamber 13. This can not only effectively prevent the water body inside the water inlet pipe 14 from freezing, but also ensure the smooth operation of the entire hot water system and avoid failures caused by frozen water pipes. The linkage control of the second temperature sensor 26 at the bottom of the installation cavity 12 and the gas combustion chamber 13 further supplements and improves the all-round anti-freezing protection mechanism of the gas water heater in a low temperature environment, and improves its reliability and safety in severe cold conditions.

[0030] Please refer to as Figure 4 As shown in the figure, two groups of second heat exchange holes 31 are also provided on the heat exchanger 15 of the gas water heater. The same group of heat exchange water pipes 32 are passed through the two groups of second heat exchange holes 31. One end of the heat exchange water pipe 32 is connected to the heating water pipe 21, and the other end is connected to the water tank 16, forming a closed heat transfer loop. During the process of the gas combustion chamber 13 generating heat, it heats the heat exchanger 15, and then exchanges heat with the heat exchange water pipe 32 through the heat exchanger 15. The heat will be efficiently transferred to the water flow inside the heat exchange water pipe 32 passing through these second heat exchange holes 31. This not only improves the energy utilization efficiency of the entire heat exchange system, but also effectively isolates the heat exchange water pipe 32 from the external environment and reduces the risk of the pipeline being frozen.

[0031] Please refer to asFigure 2 As shown, a water pump 33 is provided at the top of the water tank 16. The water inlet end of the water pump 33 is connected to the water tank 16 through a pipeline, and it can extract the hot water stored inside the water tank 16. The water outlet end of the water pump 33 is connected to an electromagnetic diverter valve 34. This electromagnetic diverter valve 34 can, according to the actual needs of users, deliver the hot water to the heating water pipe 35 and the domestic water pipe 36 respectively. If the user needs winter heating, the hot water will be delivered to the corresponding heating equipment through the heating water pipe 35; if it is only for daily domestic water use, the hot water will be directly delivered to the water use point through the domestic water pipe 36. This flexible water outlet distribution mechanism fully meets the hot water requirements in different usage scenarios, improving the practicability and applicability of this gas water heater; whether for heating or domestic water use, users can obtain a stable and reliable hot water supply.

[0032] Please refer to Figure 1 and Figure 2 As shown, an installation backboard 18 is provided on the back of the outer shell 11. Users can install the entire water heater in a suitable position by connecting it to a hook or fixing it with screws; this simple and efficient installation method saves the user's installation time and effort; in addition, an exhaust gas discharge device 37 is also provided inside the installation cavity 12. One side of the gas combustion chamber 13 is connected to this exhaust gas discharge device 37 through a gas pipe, enabling the exhaust gas generated during the gas combustion process to be discharged in a timely manner; at the same time, through holes are correspondingly opened at the top of the installation backboard 18, and the exhaust pipe of the exhaust gas discharge device 37 passes through them; this not only facilitates the normal operation of the gas combustion chamber 13 but also effectively avoids the problem of exhaust gas backflow caused by a low-temperature environment, further improving the safety of this water heater under severe cold conditions and ensuring that users can obtain a more reassuring and comfortable experience during use.

[0033] The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the present utility model and its practical applications, and to enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. An anti-freeze protected gas water heater, comprising a housing (11), characterized in that: A mounting cavity (12) is provided on one side of the shell (11), a gas combustion chamber (13) is provided in the mounting cavity (12), a water inlet pipe (14) is provided at the bottom of the shell (11), a heating water pipe (21) surrounds the outside of the gas combustion chamber (13), one end of the water inlet pipe (14) is connected to the heating water pipe (21), and a heat exchanger (15) is provided on the top of the gas combustion chamber (13); a water tank (16) is also provided in the mounting cavity (12), a heating reflux component is provided on the top of the water tank (16), and a controller (17) is provided on the front of the shell (11).

2. The gas water heater with anti-freezing protection according to claim 1, characterized in that: The temperature rise and reflux component comprises a circulation pump (22), the bottom of the circulation pump (22) is connected to the water tank (16) through a pipeline, a temperature rise and reflux pipe (23) is arranged on one side of the circulation pump (22), a first heat exchange hole (24) penetrating the heat exchanger (15) is opened, and the temperature rise and reflux pipe (23) passes through the first heat exchange hole (24) and is connected to the water tank (16).

3. The gas water heater with anti-freezing protection according to claim 2, characterized in that: The temperature rise reflux component also includes a first temperature sensor (25). The first temperature sensor (25) is arranged on the top of the water tank (16). The first temperature sensor (25) and the circulation pump (22) are both electrically connected to the controller (17).

4. The anti-freezing protection gas water heater according to claim 1, characterized in that: A second temperature sensor (26) is arranged at the bottom of the installation cavity (12), the second temperature sensor (26) faces the water inlet pipe (14), and the gas combustion chamber (13) and the second temperature sensor (26) are both electrically connected to the controller (17).

5. The gas water heater with anti-freezing protection according to claim 1, wherein: The heat exchanger (15) is provided with two groups of second heat exchange holes (31), and the same group of hot water exchange pipes (32) are passed through the two groups of second heat exchange holes (31). One end of the hot water exchange pipe (32) is connected to the heating water pipe (21), and the other end is connected to the water tank (16).

6. The anti-freezing protection gas water heater according to claim 1, characterized in that: A water outlet pump (33) is arranged on the top of the water tank (16); a water inlet end of the water outlet pump (33) is connected to the water tank (16) via a pipeline; a water outlet end of the water outlet pump (33) is connected to an electromagnetic diverter valve (34); a heating water pipe (35) and a domestic water pipe (36) are arranged on one side of the electromagnetic diverter valve (34).

7. The anti-freezing protection gas water heater according to claim 1, characterized in that: The back of the housing (11) is provided with a mounting back plate (18), an exhaust gas discharge device (37) is provided in the mounting cavity (12), one side of the gas combustion chamber (13) is connected to the exhaust gas discharge device (37) via an air pipe, a through hole is provided at the top of the mounting back plate (18) corresponding to the exhaust gas discharge device (37), and an exhaust pipe of the exhaust gas discharge device (37) is passed through the through hole.

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