Safety type gas water heater heat exchanger

Abstract

The utility model provides a safety type gas water heater heat exchanger which comprises a water heater body and a heat exchanger, the heat exchanger is installed in the water heater body, a first water inlet pipe is arranged at the bottom of the heat exchanger, a filtering assembly is arranged at one end of the heat exchanger, and a second water inlet pipe is arranged at the bottom of the water heater body. The second water inlet pipe is connected with the filtering assembly through a supercharger; a first water outlet pipe is arranged on one side of the heat exchanger and connected with a second water outlet pipe at the bottom of the water heater body through a connecting pipe. A pressure sensor is arranged on the first water outlet pipe and electrically connected with a controller arranged on one side of the water heater body. According to the heat exchanger, the filtering assembly is arranged at one end of the first water outlet pipe, cold water needs to pass through the heat exchanger firstly and then enters the heat exchanger, double filtration of the cold water is achieved through the filtering assembly, various impurities in water can be intercepted, the chance that corrosive substances make contact with the heat exchanger is reduced, and the risk that the heat exchanger is corroded is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to heat exchanger technical field, more specifically, especially, it is related to a safe gas water heater heat exchanger. BACKGROUND

[0002] The heat exchanger is a component for transmitting heat generated by gas combustion to cold water to rapidly heat the cold water and provide hot water in the gas water heater. In daily water, there are often many impurities. When the cold water flows in the pipeline, the impurities will enter the heat exchanger with the cold water. However, the traditional heat exchanger does not have an effective filtering structure. Therefore, the impurities in the water will directly enter the heat exchanger during the hot water circulation process. With long-term use, the impurities will accumulate on the inner wall of the heat exchanger pipeline, reducing the heat exchange efficiency. At the same time, the accumulated impurities will corrode the heat exchanger, causing the heat exchanger to rust, resulting in water leakage of the heat exchanger. If not treated in time, it will bring great safety hazards. SUMMARY

[0003] To solve the above technical problems, the utility model provides a safe gas water heater heat exchanger to solve the technical problem that the traditional heat exchanger does not have an effective filtering structure, which easily causes the accumulation of impurities and reduces the heat exchange efficiency. At the same time, it also easily causes the corrosion and rust of the heat exchanger, resulting in great safety hazards.

[0004] The purpose and function of the safe gas water heater heat exchanger are achieved by the following specific technical means:

[0005] A safe gas water heater heat exchanger, comprising a water heater body and a heat exchanger, the heat exchanger is installed in the water heater body, the heat exchanger bottom is provided with a first water inlet pipe, one end of the first water inlet pipe is provided with a filtering assembly, the water heater body bottom is provided with a second water inlet pipe, the water heater body is provided with a booster, the booster is connected with the second water inlet pipe and the filtering assembly through a connecting pipe; one side of the heat exchanger is provided with a first water outlet pipe, the first water outlet pipe is connected with the water heater body bottom second water outlet pipe through the connecting pipe; a pressure sensor is arranged on the first water outlet pipe, a controller is arranged on one side of the water heater body, and the pressure sensor and the controller are electrically connected.

[0006] According to a preferred embodiment, the filter assembly comprises a main pipe, one side of the main pipe is provided with a filter pipe, the filter pipe is through the main pipe, one side of the main pipe is provided with a filter, the filter is arranged in the filter pipe, one end of the filter is in contact with the inner wall of the main pipe, the diameter of the filter is smaller than the diameter of the inner wall of the filter pipe, and a gap is formed between the filter and the inner wall of the filter pipe.

[0007] According to a preferred embodiment, one end of the filter is provided with a mounting seat, the filter pipe is provided with a mounting plate, a plurality of mounting holes are formed in the mounting plate and the mounting seat, mounting bolts are arranged in the mounting holes, and the filter and the filter pipe are detachably connected; a sealing ring is further arranged between the mounting seat and the filter pipe, and the sealing ring is arranged on the filter.

[0008] According to a preferred embodiment, the filter assembly further comprises filter cotton, one end of the main pipe is detachably provided with a connecting head, a filter cavity is formed between the main pipe and the connecting head, and the filter cotton is clamped in the filter cavity; one end of the main pipe is connected with the pressure booster, and the other end is connected with the first water inlet pipe through the connecting head.

[0009] According to a preferred embodiment, one side of the first water outlet pipe is provided with a connecting joint, one side of the pressure sensor is provided with a sensing head, and the sensing head is arranged in the connecting joint; one side of the pressure sensor is provided with a mounting buckle, the mounting buckle is arranged on the connecting joint, and a limiting hole is formed in the mounting buckle and the connecting joint, and a limiting bolt is arranged in the limiting hole.

[0010] According to a preferred embodiment, one side of the water heater body is provided with a mounting box, the controller is mounted in the mounting box, heat insulation cotton is arranged between the controller and the mounting box, a temperature sensor is arranged in the water heater body, an air inlet pipe is arranged at the bottom of the water heater body, and an electromagnetic valve is arranged at one end of the second water inlet pipe; the controller is electrically connected with the temperature sensor and the electromagnetic valve.

[0011] According to a preferred embodiment, the water heater body is provided with a ventilation groove, a plurality of ventilation holes are formed in the bottom of the ventilation groove, the diameter of one end of the ventilation hole is smaller than that of the other end, and the ventilation hole is conical; an assembly plate is clamped in the ventilation groove, a plurality of assembly grooves are formed in the assembly plate, and a fan is arranged in the assembly groove.

[0012] Compared with the prior art, the utility model has the advantages of:

[0013] 1. The utility model discloses a filter assembly is arranged at the first water inlet pipe of the bottom of heat exchanger, and filter assembly is arranged with filter piece in filter pipe, and one end of filter piece is arranged in the main body pipe and contacts with the inner wall of main body pipe because filter pipe is through with main body pipe, when cold water enters into the main body pipe, can carry out the preliminary filtration to cold water through the action of filter piece, and the large impurity in cold water can enter into filter piece, and there is gap between filter piece and filter pipe inner wall, which guarantees the filtering effect, and will not affect the water flow velocity because of too much impurity and too fast blockage, simultaneously, filter cavity is formed between main body pipe and connecting head, and filter cotton is arranged in filter cavity, and cold water needs to pass through filter cotton after preliminary filtration by filter piece, and then enters into heat exchanger, and double filtration is formed with filter piece and filter cotton, can intercept the impurity such as rust, silt, mineral particle in water, reduces the opportunity of corrosive substance and heat exchanger contact, reduces the risk of corrosion of heat exchanger.

[0014] 2. Pressure sensor is installed on the first water outlet pipe, can monitor the water pressure change inside heat exchanger in real time, when the heat exchanger appears the water leakage condition, the internal pressure will change, and pressure sensor can quickly capture this change, and signal transmission is given to controller, after receiving the signal, controller can send the alarm in time, reminds the user to check whether the heat exchanger exists the water leakage problem, when detecting that pressure change is bigger, controller will control solenoid valve, realizes the cut-off of cold water and gas supply, avoids the bigger loss caused by water leakage problem, also reduces the security risk, simultaneously, gas water heater can produce a large amount of heat in the use process, and heat accumulation is too high, is easy to cause equipment overheating, influences its performance and stability, and the cooperation of vent hole and fan can effectively cool heat exchanger, and the vent groove bottom of a plurality of vent holes is conical, and the principle of big hole into small hole increases the air flow rate, makes the external cold air can enter the heat water heater body inside quickly, and takes away the heat generated by heat exchanger, makes the temperature of heat water heater body inside keep in the balanced state. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic diagram after the utility model is assembled;

[0016] Figure 2 It is the structure schematic diagram after the utility model is split;

[0017] Figure 3 It is the structure schematic diagram after filter assembly is split;

[0018] Figure 4 It is the structure schematic diagram after heat exchanger and pressure sensor are split;

[0019] Figure 5 It is the structure schematic diagram of heat exchanger;

[0020] Figure 6 is a partial sectional view of the utility model;

[0021] Figure 7 is a principle block diagram of the controller.

[0022] In the drawing, the corresponding relationship of component name and drawing number is:

[0023] 11, water heater body; 12, second water inlet pipe; 13, booster; 14, mounting box; 15, heat insulation cotton; 16, air inlet pipe; 17, electromagnetic valve; 18, air vent; 19, air hole; 21, heat exchanger; 22, first water inlet pipe; 23, first water outlet; 24, connecting joint; 25, temperature sensor; 31, pressure sensor; 32, controller; 33, induction head; 34, mounting buckle; 35, limiting bolt; 36, assembly plate; 37, assembly groove; 41, main pipe; 42, filter pipe; 43, filter element; 44, mounting seat; 45, mounting plate; 46, sealing ring; 47, filter cotton; 48, connecting head. DETAILED DESCRIPTION

[0024] The embodiment of the utility model is further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the technical scheme of the utility model, but cannot be used to limit the protection scope of the utility model.

[0025] Example:

[0026] As Figures 1 to 7As shown, the utility model provides a kind of safety gas water heater heat exchanger, including water heater body 11 with heat exchanger 21, heat exchanger 21 is installed in water heater body 11 inside, first water inlet pipe 22 is provided at the bottom of heat exchanger 21, one end of first water inlet pipe 22 is equipped with filter assembly, filter assembly can effectively filter the impurity in water before cold water enters heat exchanger 21, prevent the impurity from causing blockage or damage inside heat exchanger 21, also avoid the accumulation of impurities, cause the corrosion of heat exchanger 21. Second water inlet pipe 12 is also provided at the bottom of water heater body 11. Meanwhile, booster 13 is installed in water heater body 11 inside, booster 13 is connected with second water inlet pipe 12 and filter assembly by connecting pipe. The effect of booster 13 is to improve the pressure of water flow, ensure that cold water can enter heat exchanger 21 with enough pressure, to improve the efficiency of heat exchange, booster 13 can adopt Granth UP A15-90 automatic booster pump. One side of heat exchanger 21 is provided with first water outlet pipe 23. First water outlet pipe 23 is connected with second water outlet pipe at the bottom of water heater body 11 by connecting pipe. When hot water after heat exchange flows out from heat exchanger 21, it is transported to the place required by user by first water outlet pipe 23 and second water outlet pipe. Pressure sensor 31 is provided on first water outlet pipe 23. Pressure sensor 31 can monitor the water pressure change inside heat exchanger 21 in real time. When heat exchanger 21 appears abnormal conditions such as leakage, internal pressure will change, and pressure sensor 31 can quickly capture this change, and pressure sensor 31 can adopt OMRON (OMRON) D6F series differential pressure sensor. Controller 32 is provided on one side of water heater body 11, and pressure sensor 31 is electrically connected with controller 32, when pressure sensor 31 detects pressure change, signal is transmitted to controller 32. After receiving the signal, controller 32 can timely issue an alarm to remind user to check whether heat exchanger 21 has leakage problem, and controller 32 can adopt OMRON CP1 E-N40SDR-A controller.

[0027] As Figure 2 、 Figure 3 、 Figure 5 shown, filter assembly includes main pipe 41, main pipe 41 side is provided with filter pipe 42, and filter pipe 42 and main pipe 41 are mutually penetrated, to ensure that water flow can pass smoothly. Filter piece 43 is installed on the side of main pipe 41, filter piece 43 is arranged in filter pipe 42, and one end of filter piece 43 is in contact with the inner wall of main pipe 41. The diameter of filter piece 43 is less than the diameter of the inner wall of filter pipe 42, so that a gap is formed between filter piece 43 and the inner wall of filter pipe 42, which ensures that even if more impurities are intercepted by filter piece 43 during the filtering process, the water flow rate will not be affected due to excessive impurities and rapid blockage, and cold water can continuously and stably enter heat exchanger 21.

[0028] One end of the filter 43 is provided with a mounting seat 44, and the filter pipe 42 is provided with a mounting plate 45. The mounting plate 45 and the mounting seat 44 are both provided with a plurality of groups of mounting holes, and mounting bolts are arranged in the mounting holes, so that the filter 43 and the filter pipe 42 are detachably connected. After the filter 43 is used for a period of time, a large amount of impurities may accumulate, affecting the filtering effect. The user can disassemble the mounting bolts, remove the filter 43 from the filter pipe 42, and clean or replace the filter 43 to ensure the continuous operation of the filter assembly. In addition, a sealing ring 46 is arranged between the mounting seat 44 and the filter pipe 42, the sealing ring 46 is sleeved on the filter 43, and the sealing ring 46 can effectively prevent unfiltered water from seeping into the heat exchanger 21 from the connection between the mounting seat 44 and the filter pipe 42, ensuring the reliability and stability of the filtration.

[0029] The filter assembly further comprises filter cotton 47. One end of the main pipe 41 is detachably provided with a connecting head 48, and a filter cavity is formed between the main pipe 41 and the connecting head 48. The filter cotton 47 is clamped in the filter cavity, and the filter cotton 47 can further intercept small impurities in the water. After the cold water is preliminarily filtered by the filter 43, it will be filtered again by the filter cotton 47. Through the double filtering action of the filter 43 and the filter cotton 47, rust, sand, mineral particles and other impurities in the water can be intercepted, the opportunity for corrosive substances to contact the heat exchanger 21 is reduced, the risk of corrosion of the heat exchanger 21 is reduced, and the service life of the heat exchanger 21 is prolonged. One end of the main pipe 41 is connected with the pressure booster 13, and the other end is connected with the first water inlet pipe 22 through the connecting head 48, so that the whole filter assembly cooperates with other parts of the gas water heater.

[0030] As shown in Figure 2 , Figure 4 , one side of the first water outlet pipe 23 is provided with a connecting joint 24, and one side of the pressure sensor 31 is provided with a sensing head 33. The sensing head 33 is arranged in the connecting joint 24, and the pressure sensor 31 can more accurately sense the water pressure change in the first water outlet pipe 23. The pressure sensor 31 is further provided with a mounting buckle 34, which is tightly sleeved on the connecting joint 24, further ensuring the installation stability of the pressure sensor 31. The mounting buckle 34 and the connecting joint 24 are both provided with limiting holes, and the limiting bolt 35 is arranged in the limiting holes to firmly fix the pressure sensor 31 on the connecting joint 24, preventing loosening or displacement during use, thereby ensuring the accuracy and reliability of pressure monitoring.

[0031] The side of the water heater body 11 is provided with a mounting box 14, and the controller 32 is mounted in the mounting box 14. In order to ensure the stable operation of the controller 32, the heat insulation cotton 15 is arranged between the controller 32 and the mounting box 14. The heat insulation cotton 15 can effectively block the heat generated in the water heater body 11 from being transmitted to the controller 32, prevent the controller 32 from being damaged due to high temperature, and ensure that the controller 32 can work in a suitable temperature environment. At the same time, the water heater body 11 is provided with a temperature sensor 25, which can monitor the temperature change in the water heater body 11 in real time. The bottom of the water heater body 11 is provided with an air inlet pipe 16 for conveying gas. The air inlet pipe 16 and one end of the second water inlet pipe 12 are provided with electromagnetic valves 17, which play a key control role. The controller 32 is electrically connected with the temperature sensor 25 and the electromagnetic valves 17. When the temperature sensor 25 detects abnormal change of the temperature in the water heater body 11, it will transmit a signal to the controller 32. The temperature sensor 25 can adopt an Omron E52-CA20A temperature sensor. The controller 32 controls the electromagnetic valves 17 on the air inlet pipe 16 and the second water inlet pipe 12 according to the received signal.

[0032] As shown in Figure 2 、 Figure 6 , a ventilation groove 18 is arranged on one side of the water heater body 11. The bottom of the ventilation groove 18 is provided with a plurality of ventilation holes 19, one end of which is larger in diameter and the other end is smaller in diameter, which is tapered, so that the external cold air can enter the water heater body 11 more quickly by utilizing the principle of air flow. The ventilation groove 18 is clamped with an assembly plate 36, and a plurality of assembly grooves 37 are arranged on the assembly plate 36, and fans are arranged in the assembly grooves 37. The existence of the fans further enhances the flow effect of the air and accelerates the emission of heat.

[0033] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments.

Claims

1. A safe gas water heater heat exchanger, comprising a water heater body (11) and a heat exchanger (21), characterized in that: The heat exchanger (21) is installed inside the water heater body (11). A first water inlet pipe (22) is provided at the bottom of the heat exchanger (21). A filter assembly is provided at one end of the first water inlet pipe (22). A second water inlet pipe (12) is provided at the bottom of the water heater body (11). A booster (13) is provided inside the water heater body (11). The booster (13) is connected to the second water inlet pipe (12) and the filter assembly through a connecting pipe. A first water outlet pipe (23) is provided on one side of the heat exchanger (21). The first water outlet pipe (23) is connected to the second water outlet pipe at the bottom of the water heater body (11) through the connecting pipe. A pressure sensor (31) is provided on the first water outlet pipe (23). A controller (32) is provided on one side of the water heater body (11). The pressure sensor (31) is electrically connected to the controller (32).

2. The safe gas water heater heat exchanger according to claim 1, characterized in that: The filter assembly includes a main tube (41), a filter tube (42) is provided on one side of the main tube (41), and the filter tube (42) is in communication with the main tube (41); a filter element (43) is provided on one side of the main tube (41), the filter element (43) passes through the filter tube (42), one end of the filter element (43) contacts the inner wall of the main tube (41), the diameter of the filter element (43) is smaller than the inner wall diameter of the filter tube (42), and a gap is formed between the filter element (43) and the inner wall of the filter tube (42).

3. A safe gas water heater heat exchanger according to claim 2, characterized in that: The filter element (43) is provided with a mounting base (44) at one end, and a mounting plate (45) is provided on the filter tube (42). Both the mounting plate (45) and the mounting base (44) have multiple sets of mounting holes, and mounting bolts are inserted into the mounting holes. The filter element (43) and the filter tube (42) are detachably connected. A sealing ring (46) is also provided between the mounting base (44) and the filter tube (42), and the sealing ring (46) is fitted on the filter element (43).

4. A safe gas water heater heat exchanger according to claim 3, characterized in that: The filter assembly also includes filter cotton (47), and a connector (48) is detachably provided at one end of the main tube (41). A filter chamber is formed between the main tube (41) and the connector (48), and the filter cotton (47) is inserted into the filter chamber. One end of the main tube (41) is connected to the booster (13), and the other end is connected to the first water inlet pipe (22) through the connector (48).

5. A safe gas water heater heat exchanger according to claim 1, characterized in that: A connecting joint (24) is provided on one side of the first water outlet pipe (23), and a sensing head (33) is provided on one side of the pressure sensor (31). The sensing head (33) passes through the connecting joint (24). A mounting buckle (34) is provided on one side of the pressure sensor (31). The mounting buckle (34) is sleeved on the connecting joint (24). Limiting holes are provided on both the mounting buckle (34) and the connecting joint (24). A limiting bolt (35) passes through the limiting hole.

6. A safe gas water heater heat exchanger according to claim 5, characterized in that: An installation box (14) is provided on one side of the water heater body (11). The controller (32) is installed in the installation box (14). A heat insulation cotton (15) is provided between the controller (32) and the installation box (14). A temperature sensor (25) is provided inside the water heater body (11). An air inlet pipe (16) is provided at the bottom of the water heater body (11). A solenoid valve (17) is provided at one end of the air inlet pipe (16) and the second water inlet pipe (12). The controller (32) is electrically connected to the temperature sensor (25) and the solenoid valve (17).

7. A safe gas water heater heat exchanger according to claim 6, characterized in that: A ventilation groove (18) is provided on one side of the water heater body (11). A number of ventilation holes (19) are provided at the bottom of the ventilation groove (18). The diameter of one end of the ventilation hole (19) is smaller than that of the other end, and it is conical. An assembly plate (36) is installed in the ventilation groove (18). A number of assembly slots (37) are provided on the assembly plate (36). A fan is installed in the assembly slot (37).

Images