Gas water heater

Abstract

The invention discloses a gas water heater, which comprises a water pipe, a water inlet pipe, a water outlet pipe, a water inlet pipe, a water outlet pipe, a water inlet pipe, a water inlet pipe and a water outlet pipe, and is characterized in that the water inlet end of the water pipe is communicated with the water inlet end of the water outlet pipe; the water inlet end of the connecting pipe is communicated with the water outlet end of the water inlet pipe, the water outlet end of the connecting pipe is communicated with the water inlet end of the water outlet pipe, and a heater is arranged on the connecting pipe; the first water transfer assembly is arranged at the water inlet end of the water passing pipe; the second water transfer assembly is arranged at the water outlet end of the connecting pipe; the first temperature sensor is arranged on the water inlet pipe; the second temperature sensor is arranged at the water outlet end of the water passing pipe; the water inlet end of the water storage tank is communicated with the water outlet end of the water passing pipe and the water outlet end of the connecting pipe, the water outlet end of the water storage tank is communicated with the water outlet pipe, and a third temperature sensor is arranged in the water storage tank. The water dispenser is simple in structure, and the phenomenon that a user feels too much cold water when using water, and consequently the bathing experience is not good can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a gas water heater. Background Art

[0002] Existing gas water heaters are all constant temperature gas water heaters. When the user uses water, the gas water heater detects the water flow signal, first turns on the fan for front cleaning, and discharges the exhaust gas in the water heater through the smoke pipe. After the wind pressure switch detects that it is closed, it will ignite, open the air valve, and then burn. After the water is heated, it flows out through the water heater. It takes about 3-5 seconds from the user turning on the water to the water heater burning. It usually takes 20-30 seconds for the user to turn on the water in the bathing area until the constant temperature hot water flows out. During the bathing process, users are accustomed to turning off the water and applying soap. When turning on the water again (that is, when using water for the second time), since ignition needs to wait for the fan to clean the front, the water heater also needs 3-5 seconds after turning on the water. This will cause the user to first flow out the hot water stored in the water pipe after turning on the water, and then flow out a section of cold water for 3-5 seconds. This causes a bad user experience.

[0003] In addition, when using water once, since it usually takes about 10 seconds for the water heater to ignite and produce hot water, you need to wait for another 10 seconds before hot water can be produced. Summary of the invention

[0004] The present invention aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the present invention proposes a gas water heater with a simple structure, which can effectively shorten the heating time and avoid the occurrence of too much cold water when the user uses water, thereby causing a bad bathing experience.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A gas water heater, comprising:

[0007] A water heater body, on which a water inlet pipe and a water outlet pipe are respectively connected;

[0008] A water pipe, wherein the water inlet end of the water pipe is connected to the water outlet end of the water inlet pipe, the water outlet end of the water pipe is connected to the water inlet end of the water outlet pipe, and the water pipe is connected to a combustion chamber;

[0009] A connecting pipe, wherein a water inlet end of the connecting pipe is connected to a water outlet end of the water inlet pipe, a water outlet end of the connecting pipe is connected to a water inlet end of the water outlet pipe, and a heater is provided on the connecting pipe;

[0010] A first water regulating component, wherein the first water regulating component is arranged on the water inlet end of the water pipe;

[0011] A second water regulating assembly, wherein the second water regulating assembly is arranged on the water outlet end of the connecting pipe;

[0012] A first temperature sensor, wherein the first temperature sensor is arranged on the water inlet pipe;

[0013] a second temperature sensor, wherein the second temperature sensor is arranged on the water outlet end of the water pipe;

[0014] A water storage tank, wherein the water inlet end of the water storage tank is respectively connected with the water outlet end of the water pipe and the water outlet end of the connecting pipe, the water outlet end of the water storage tank is connected with the water outlet pipe, and a third temperature sensor is arranged in the water storage tank;

[0015] A controller is electrically connected to the first water regulating component, the second water regulating component, the first temperature sensor, the second temperature sensor, and the third temperature sensor respectively.

[0016] In some embodiments, a water pump electrically connected to the controller is further included, the water pump is arranged on the water inlet pipe, and the water outlet of the water pump is respectively connected to the water inlet end of the water pipe and the water inlet end of the connecting pipe.

[0017] In some embodiments, the first water regulating component includes a first water regulating valve and a first water flow sensor, wherein the first water regulating valve and the first water flow sensor are respectively arranged on the water inlet end of the water pipe, and the first water regulating valve and the first water flow sensor are respectively electrically connected to the controller.

[0018] In some embodiments, the second water regulating component includes a second water regulating valve and a second water flow sensor, wherein the second water regulating valve and the second water flow sensor are respectively arranged on the water outlet end of the water pipe, and the second water regulating valve and the second water flow sensor are respectively electrically connected to the controller.

[0019] In some embodiments, a fan electrically connected to the controller is further included, one end of the fan is connected to the combustion chamber, and the other end is connected to the external air.

[0020] In some embodiments, a gas valve is further included, and the gas valve is electrically connected to the controller.

[0021] In some embodiments, it also includes a proportional valve, a first segment valve and a second segment valve electrically connected to the controller respectively, wherein the air inlet end of the proportional valve is connected to the air valve, and the air outlet end thereof is connected to a gas dividing rod, and a plurality of nozzles are respectively arranged on the gas dividing rod, and the plurality of nozzles are divided into a first area, a second area and a third area in the lateral direction, the nozzles on the first area are controlled on and off by the first segment valve, the nozzles on the second area are normally open, and the nozzles on the third area are controlled on and off by the second segment valve.

[0022] Compared with the prior art, the present invention has at least the following beneficial effects:

[0023] 1. The gas water heater of the present invention has a simple structure and can effectively shorten the heating time. It can also prevent the user from using too much cold water when using water, thereby preventing the user from having a bad bathing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the structure of a gas water heater in an embodiment of the present invention. DETAILED DESCRIPTION

[0026] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in combination with the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, but not all of the embodiments. The components of the embodiment of the present invention can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the technical solution claimed for protection of the present invention.

[0028] Example:

[0029] like Figure 1 As shown, this embodiment provides a gas water heater, comprising:

[0030] The water heater body 1 is connected with a water inlet pipe 11 and a water outlet pipe 12;

[0031] A water pipe 2, the water inlet end of the water pipe 2 is connected to the water outlet end of the water inlet pipe 11, the water outlet end of the water pipe 2 is connected to the water inlet end of the water outlet pipe 12, and the water pipe 2 is connected to the combustion chamber 21;

[0032] A connecting pipe 3, wherein the water inlet end of the connecting pipe 3 is connected to the water outlet end of the water inlet pipe 11, and the water outlet end of the connecting pipe 3 is connected to the water inlet end of the water outlet pipe 12, and a heater 31 is provided on the connecting pipe 3;

[0033] A first water regulating component 8, which is arranged on the water inlet end of the water pipe 2;

[0034] A second water regulating component 9, which is arranged on the water outlet end of the connecting pipe 3;

[0035] A first temperature sensor 4, which is arranged on the water inlet pipe 11;

[0036] A second temperature sensor 5, which is arranged on the water outlet end of the water pipe 2;

[0037] A water storage tank 6, wherein the water inlet end of the water storage tank 6 is respectively connected to the water outlet end of the water pipe 2 and the water outlet end of the connecting pipe 3, the water outlet end of the water storage tank 6 is connected to the water outlet pipe 12, and a third temperature sensor is arranged in the water storage tank 6;

[0038] The controller is electrically connected to the first water regulating component 8, the second water regulating component 9, the first temperature sensor 4, the second temperature sensor 5, and the third temperature sensor respectively.

[0039] In this embodiment, a water inlet pipe 11 and a water outlet pipe 12 are respectively connected to the water heater body 1, and a water pipe 2 and a connecting pipe 3 are respectively arranged in the heat exchanger body. The water inlet end of the water pipe 2 and the water inlet end of the connecting pipe 3 are respectively connected to the water inlet pipe 11, and the water outlet end of the water pipe 2 and the water outlet end of the connecting pipe 3 are respectively connected to the water outlet pipe 12. The water pipe 2 is connected to the combustion chamber 21. A heat exchanger is arranged in the combustion chamber 21 so that the pipeline of the water pipe 2 forms a main water channel. A heater 31 is arranged on the connecting pipe 3 so that the pipeline of the connecting pipe 3 forms a branch water channel. The first temperature sensor 4 is arranged on the water inlet pipe 11 to detect the inlet water temperature, and the second temperature sensor 5 is arranged on the water outlet end of the water pipe 2 to detect the water flowing out of the combustion chamber 21. The temperature is detected, and the third temperature sensor is arranged in the water storage tank 6 to detect the outlet water temperature, and the water inlet end of the water storage tank 6 is respectively connected with the water outlet end of the water pipe 2 and the water outlet end of the connecting pipe 3, and the water outlet end is connected with the water outlet pipe 12, so that the water flow output by the water pipe 2 and the connecting pipe 3 can be evenly mixed by the water storage tank 6 and then outputted outward, so that the controller controls the action of the first water regulating component 8, the second water regulating component 9, and the heater 31 according to the temperature conditions fed back by the first temperature sensor 4, the second temperature sensor 5, and the third temperature sensor to enable the gas water heater to achieve constant temperature control, and its structure is simple, and the heating time is effectively shortened. At the same time, it can also avoid more cold water when the user uses water, thereby causing a bad bathing experience.

[0040] In addition, in this embodiment, the power of the heater 31 is preferably 3kw, which is a high power consumption, so that hot water can be produced quickly.

[0041] Furthermore, it also includes a water pump 7 electrically connected to the controller. The water pump 7 is arranged on the water inlet pipe 11, and the water outlet end of the water pump 7 is respectively connected to the water inlet end of the water pipe 2 and the water inlet end of the connecting pipe 3. It has a simple structure, and the water flow is pressurized by the operation of the water pump 7, thereby increasing the water flow rate of the user's bath.

[0042] Preferably, the first water regulating component 8 includes a first water regulating valve and a first water flow sensor, wherein the first water regulating valve and the first water flow sensor are respectively arranged on the water inlet end of the water pipe 2, and the first water regulating valve and the first water flow sensor are respectively electrically connected to the controller. The design is reasonable, and the water flow regulating function is realized by adopting an electric water regulating valve for the first water regulating valve, so that the water flow can be increased or decreased.

[0043] Specifically, the second water regulating component 9 includes a second water regulating valve and a second water flow sensor, wherein the second water regulating valve and the second water flow sensor are respectively arranged on the water outlet end of the water pipe 2, and the second water regulating valve and the second water flow sensor are respectively electrically connected to the controller. The design is reasonable. By adopting an electric water regulating valve for the second water regulating valve, the water flow regulation function is realized, and the water flow can be increased or decreased.

[0044] Preferably, it also includes a fan electrically connected to the controller, one end of the fan is connected to the combustion chamber 21, and the other end is connected to the external air. Its structure is simple. When the flame is burning, the fan blows away the waste gas generated by the combustion and supplements oxygen for its combustion.

[0045] Furthermore, it also includes an air valve, which is electrically connected to the controller.

[0046] In particular, it also includes a proportional valve, a first segment valve and a second segment valve which are electrically connected to the controller respectively, wherein the air inlet end of the proportional valve is connected to the air valve, and the air outlet end thereof is connected to an air dividing rod, on which a plurality of nozzles are respectively arranged, and the plurality of nozzles are divided into a first area, a second area and a third area in the lateral direction, the nozzles in the first area are controlled on and off by the first segment valve, the nozzles in the second area are normally open, and the nozzles in the third area are controlled on and off by the second segment valve.

[0047] In this embodiment, the gas passes through the gas valve and the gas proportional valve in sequence and then enters the gas distribution rod. Since a plurality of nozzles are respectively arranged on the gas distribution rod, the plurality of nozzles are divided into a first area, a second area, and a third area in the horizontal direction, and the nozzles on the first area are controlled on and off by the first section valve, the nozzles on the second area are normally open, and the nozzles on the third area are controlled on and off by the second section valve. When the water heater is ignited and burned, the controller controls the air intake flow rate by adjusting the current value of the proportional valve, and controls different numbers of fire rows by switching the first section valve and the second section valve. Different numbers of rows and different proportional valve current values ​​are selected for combustion according to different loads. When designing the water heater, it must be ensured that the maximum fire load of the 2 rows is greater than the minimum fire load of the 4 rows, and the maximum fire load of the 4 rows is greater than the minimum fire load of the 6 rows, so as to ensure load continuity.

[0048] In this embodiment, the controller controls the intake air flow rate by adjusting the current value of the proportional valve. The openings of the proportional valves of the minimum fire PL and the maximum fire PH in different sections are close. However, in order to ensure flame stability and load overlap, the values ​​of each section are slightly different, as follows:

[0049] (1 Under the same proportional valve opening, after the first and second section valves are opened, the secondary pressure will drop, so the flame stability P2L and P3L are generally higher than P1L.

[0050] (2 To ensure that the load overlap area is sufficient, the current values ​​of P1H and P2H are larger than that of P3H.

[0051] In this embodiment, the steps for implementing the rapid heating function are as follows:

[0052] Step 1: The user's boiling water flow rate is 5L / MIN, the target heating temperature is 42 degrees, and the water inlet temperature is 20℃.

[0053] Step 2: Adjust the first water regulating valve to use L1=3L / MIN and the second water regulating valve to use L2=2L / MIN.

[0054] Step 3, the combustion chamber 21 of the water channel of the water pipe 2 is ignited normally and the temperature is controlled. After about 10 seconds, the water temperature gradually increases, and the water outlet temperature t2 reaches 42 degrees in about 20 seconds.

[0055] Step 4, the water circuit of the connecting pipe 3 controls the heater 31 to start heating. After about 5 seconds, the temperature of the heated hot water on the water circuit of the water pipe 2 is about 39 / 2=19.5°C, that is, the outlet water temperature=19.5+20=39.5°C. Then, after the heating is completed, the hot water produced by the water circuit of the water circuit of the water circuit of the water circuit of the water circuit of the water circuit of the connecting pipe 3 is evenly mixed in the water storage tank 6, and the mixed temperature is (39.5*L2+20*L1) / 5=(39.5*2+20*3) / 5=28°C. After 10 seconds, the water circuit of ...

[0056] In this embodiment, the steps for implementing the anti-scalding function are as follows:

[0057] Step 1: The user's boiling water flow rate is 5L / MIN, the target heating temperature is 42 degrees, and the water inlet temperature is 20℃.

[0058] Step 2: First, follow the steps 2-4 of the rapid heating function to control and obtain stable 42-degree hot water. At this time, the heat load of the water heater is about (42-20)*5=110(L / min*℃)=110 / 13(kw)=8.5(kw)

[0059] Step 3, the user turns on another water source, such as filling the kitchen with water for 20 seconds. At this time, the total flow rate is 8L / MIN, and the water heater thermostatic control slowly increases the power to (42-20)*8=176(L / min*℃)=110 / 13(kw)=13.5(kw).

[0060] Step 4: The user immediately turns off the kitchen water after 20 seconds. Due to the inertia of the water heater load heating, the heating load will slowly decrease after the water power is reduced, so the power will slowly drop from 13.5kw to 8.5kw, lasting about 5-10s.

[0061] When the water flow is detected to drop to 5L / M IN, quickly adjust the first water regulating valve to use L1 = 3L / M IN, and the second water regulating valve to use L2 = 2L / M IN. Since the cold water can immediately enter the water tank through the second water regulating valve and neutralize the temperature with the first water regulating valve, the water temperature will drop rapidly, and the maximum temperature can be reduced to about 50, and then slowly drop to 42°C, thereby realizing the anti-scalding function.

[0062] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A gas water heater, characterized in that: include: A water heater body (1), wherein a water inlet pipe (11) and a water outlet pipe (12) are respectively connected to the water heater body (1); A water pipe (2), wherein the water inlet end of the water pipe (2) is in communication with the water outlet end of the water inlet pipe (11), the water outlet end of the water pipe (2) is in communication with the water inlet end of the water outlet pipe (12), and the water pipe (2) is connected to a combustion chamber (21); A connecting pipe (3), wherein the water inlet end of the connecting pipe (3) is connected to the water outlet end of the water inlet pipe (11), the water outlet end of the connecting pipe (3) is connected to the water inlet end of the water outlet pipe (12), and a heater (31) is provided on the connecting pipe (3); A first water regulating component (8), the first water regulating component (8) being arranged on the water inlet end of the water passage pipe (2); A second water regulating component (9), the second water regulating component (9) being arranged on the water outlet end of the connecting pipe (3); A first temperature sensor (4), wherein the first temperature sensor (4) is arranged on the water inlet pipe (11); A second temperature sensor (5), the second temperature sensor (5) being arranged on the water outlet end of the water pipe (2); A water storage tank (6), wherein the water inlet end of the water storage tank (6) is respectively connected to the water outlet end of the water pipe (2) and the water outlet end of the connecting pipe (3), the water outlet end of the water storage tank (6) is connected to the water outlet pipe (12), and a third temperature sensor is arranged in the water storage tank (6); A controller, wherein the controller is electrically connected to the first water regulating component (8), the second water regulating component (9), the first temperature sensor (4), the second temperature sensor (5), and the third temperature sensor respectively.

2. A gas water heater according to claim 1, characterized in that: It also includes a water pump (7) electrically connected to the controller, the water pump (7) being arranged on the water inlet pipe (11), and the water outlet end of the water pump (7) being respectively connected to the water inlet end of the water pipe (2) and the water inlet end of the connecting pipe (3).

3. A gas water heater according to claim 1, characterized in that: The first water regulating component (8) comprises a first water regulating valve and a first water flow sensor, wherein the first water regulating valve and the first water flow sensor are respectively arranged on the water inlet end of the water pipe (2), and the first water regulating valve and the first water flow sensor are respectively electrically connected to the controller.

4. A gas water heater according to claim 1, characterized in that: The second water regulating component (9) comprises a second water regulating valve and a second water flow sensor, wherein the second water regulating valve and the second water flow sensor are respectively arranged on the water outlet end of the water pipe (2), and the second water regulating valve and the second water flow sensor are respectively electrically connected to the controller.

5. A gas water heater according to claim 1, characterized in that: It also includes a fan electrically connected to the controller, one end of the fan is connected to the combustion chamber (21), and the other end is connected to the external air.

6. A gas water heater according to claim 1, characterized in that: It also includes an air valve, which is electrically connected to the controller.

7. A gas water heater according to claim 6, characterized in that: It also includes a proportional valve, a first segment valve and a second segment valve electrically connected to the controller respectively, wherein the air inlet end of the proportional valve is connected to the air valve, and the air outlet end thereof is connected to a gas dividing rod, on which a plurality of nozzles are respectively arranged, and the plurality of nozzles are divided into a first area, a second area and a third area in the lateral direction, the nozzles on the first area are controlled on and off by the first segment valve, the nozzles on the second area are normally open, and the nozzles on the third area are controlled on and off by the second segment valve.

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