Gas water heater

Abstract

The utility model 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 outlet pipe and a water outlet pipe, wherein 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 utility model relates to domestic appliance technical field especially relates to a gas water heater. BACKGROUND

[0002] The existing gas water heater is constant temperature type gas water heater, when the user uses water, the gas water heater detects the water flow signal, first opens the fan to clean in advance, the waste gas in the water heater is discharged through the flue pipe, the air pressure switch detects the closure, then carries out the ignition, opens the gas valve, and then burns, the water is heated and flows out through the water heater. The user needs about 3-5s from opening water to the water heater combustion, and the user needs 20-30s from opening water to constant temperature hot water flowing out in the bathing place. During the bathing process, the user is used to closing water to apply soap, and when the water is opened again (that is, when the water is used twice), since the ignition needs to wait for the fan to clean in advance, the water heater also needs 3-5s after the water is opened, which will cause the hot water stored in the water pipe to flow out first, and then a period of 3-5s cold water to flow out. This causes a bad user experience.

[0003] In addition, during the first water use, since the water heater needs about 10s from ignition to hot water flowing out, it needs to wait for 10s to produce hot water. SUMMARY

[0004] The utility model aims at at least in a certain extent solves one of the problems existing in the prior art related, for this, the utility model provides a gas water heater, its simple structure effectively shortens the heating time, and can also avoid the user when using water to appear more cold water, thereby causing a bad bathing experience.

[0005] The above-mentioned purpose is realized by the following technical schemes:

[0006] A gas water heater, comprising:

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

[0008] A water passage, which is connected with the water inlet end of the water inlet pipe and the water outlet end of the water outlet pipe, and is connected with the water inlet end of the water outlet pipe, and is connected with a combustion chamber;

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

[0010] A first water regulating assembly, which is arranged on the water inlet end of the water passage;

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

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

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

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

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

[0016] In some embodiments, a water pump electrically connected to the controller is arranged on the water inlet pipe, and the water outlet end of the water pump is 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 assembly 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 arranged on the water inlet end of the water pipe, and the first water regulating valve and the first water flow sensor are electrically connected to the controller.

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

[0019] In some embodiments, a fan electrically connected to the controller is arranged on the combustion chamber.

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

[0021] In some embodiments, a proportional valve, a first sectional valve, and a second sectional valve electrically connected to the controller are arranged, wherein the air inlet end of the proportional valve is connected to the gas valve, the air outlet end of the proportional valve is connected to a gas distribution rod, a plurality of nozzles are arranged on the gas distribution rod, the plurality of nozzles are divided into a first region, a second region, and a third region along the transverse direction, the nozzles in the first region are controlled by the first sectional valve, the nozzles in the second region are always open, and the nozzles in the third region are controlled by the second sectional valve.

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

[0023] 1、 the gas water heater of the utility model, its simple structure effectively shortens heating length, can also avoid that user appears more cold water when using water simultaneously, thereby causes bad bath experience. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in prior art, the following will briefly introduce the drawing needed to be used in specific embodiment or prior art description, obviously, the drawing in following description is some embodiment of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0025] Figure 1 It is the structural schematic diagram of the gas water heater in the embodiment of the utility model. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following will combine the embodiment of the utility model, and the technical scheme in the embodiment of the utility model is clearly and completely described, obviously, the described embodiment is a part of embodiment of the utility model, not all embodiment.The component of the embodiment of the utility model can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model.Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the technical scheme range of the utility model claimed.

[0028] Embodiment:

[0029] As Figure 1 Indicated, the embodiment provides a kind of gas water heater, comprising:

[0030] Water heater body 1, water inlet pipe 11 and water outlet pipe 12 are respectively communicated on water heater body 1;

[0031] Water pipe 2, water inlet end of water pipe 2 and water outlet end of water inlet pipe 11 are communicated, water outlet end of water pipe 2 and water inlet end of water outlet pipe 12 are communicated, and water pipe 2 is connected with combustion chamber 21;

[0032] Connecting pipe 3, connecting pipe 3 water inlet end and water outlet end of water inlet pipe 11 are communicated, connecting pipe 3 water outlet end and water inlet end of water outlet pipe 12 are communicated, and heater 31 is arranged on connecting pipe 3;

[0033] The first water regulating assembly 8 is arranged on the water inlet end of the water passage pipe 2.

[0034] The second water regulating assembly 9 is arranged on the water outlet end of the connecting pipe 3.

[0035] The first temperature sensor 4 is arranged on the water inlet pipe 11.

[0036] The second temperature sensor 5 is arranged on the water outlet end of the water passage pipe 2.

[0037] The water storage tank 6 has a water inlet end communicated with the water outlet end of the water passage pipe 2 and the water outlet end of the connecting pipe 3 respectively, and a water outlet end communicated with the water outlet pipe 12, and a third temperature sensor arranged in the water storage tank 6.

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

[0039] In the embodiment, the water inlet pipe 11 and the water outlet pipe 12 are communicated with the water heater body 1 respectively, and the water passage pipe 2 and the connecting pipe 3 are arranged in the heat exchanger body respectively, the water inlet end of the water passage pipe 2 and the water inlet end of the connecting pipe 3 are communicated with the water inlet pipe 11 respectively, and the water outlet end of the water passage pipe 2 and the water outlet end of the connecting pipe 3 are communicated with the water outlet pipe 12 respectively, the water passage pipe 2 is connected with the combustion chamber 21, and the heat exchanger is arranged in the combustion chamber 21 to form a main water passage for the water passage pipe 2, the connecting pipe 3 is provided with the heater 31 to form a branch water passage for the connecting pipe 3, the first temperature sensor 4 is arranged on the water inlet pipe 11 to detect the water inlet temperature, the second temperature sensor 5 is arranged on the water outlet end of the water passage pipe 2 to detect the water temperature flowing out of the combustion chamber 21, and the third temperature sensor is arranged in the water storage tank 6 to detect the water outlet temperature, and the water inlet end of the water storage tank 6 is communicated with the water outlet end of the water passage pipe 2 and the water outlet end of the connecting pipe 3 respectively, and the water outlet end thereof is communicated with the water outlet pipe 12, so that the water flow output by the water passage pipe 2 and the connecting pipe 3 can be mixed and uniformly output by the water storage tank 6, thereby the controller can control the actions of the first water regulating assembly 8, the second water regulating assembly 9 and the heater 31 according to the temperature feedback of the first temperature sensor 4, the second temperature sensor 5 and the third temperature sensor to realize the constant temperature control of the gas water heater, and the structure is simple, the heating time is effectively shortened, and the user can avoid the situation that there is much cold water when using water, thereby the bad bathing experience can be avoided.

[0040] In addition, the power of the heater 31 is preferably 3kw large power consumption in the embodiment, so that hot water can be quickly generated.

[0041] Further, the water pump 7 electrically connected with the controller is further included, the water pump 7 is arranged on the water inlet pipe 11, and the water outlet end of the water pump 7 is connected with the water inlet end of the water pipe 2 and the water inlet end of the connecting pipe 3 respectively, which has simple structure, and the water flow is pressurized through the working of the water pump 7, so that the water flow of the user is increased.

[0042] Preferably, the first water regulating assembly 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 arranged on the water inlet end of the water pipe 2 respectively, and the first water regulating valve and the first water flow sensor are electrically connected with the controller respectively, which has reasonable design, the water flow regulating effect is realized by adopting the electric water regulating valve, so that the water flow can be adjusted.

[0043] Specifically, the second water regulating assembly 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 arranged on the water outlet end of the water pipe 2 respectively, and the second water regulating valve and the second water flow sensor are electrically connected with the controller respectively, which has reasonable design, the water flow regulating effect is realized by adopting the electric water regulating valve, so that the water flow can be adjusted.

[0044] Preferably, the fan electrically connected with the controller is further included, one end of the fan is connected with the combustion chamber 21, and the other end is connected with the external air, which has simple structure, when the flame is burned, the fan blows away the waste gas generated by the combustion, and the oxygen is supplemented for the combustion.

[0045] Further, the gas valve electrically connected with the controller is further included.

[0046] Particularly, the proportional valve, the first sectional valve and the second sectional valve electrically connected with the controller are further included, wherein the air inlet end of the proportional valve is connected with the gas valve, the air outlet end of the proportional valve is connected with the gas distribution rod, a plurality of nozzles are arranged on the gas distribution rod respectively, the plurality of nozzles are divided into a first region, a second region and a third region along the transverse direction, the nozzles in the first region are controlled to be opened and closed by the first sectional valve, the nozzles in the second region are set to be always opened, and the nozzles in the third region are controlled to be opened and closed by the second sectional valve.

[0047] In the embodiment, the gas passes through the gas valve and the gas proportional valve in sequence, and then enters the gas distribution rod. A plurality of nozzles are arranged on the gas distribution rod. The plurality of nozzles are divided into a first region, a second region and a third region along a transverse direction. The nozzles in the first region are controlled by a first sectional valve. The nozzles in the second region are always open. The nozzles in the third region are controlled by a second sectional valve. When the water heater is ignited, the controller controls the gas flow by adjusting the current value of the proportional valve. The first sectional valve and the second sectional valve are switched to control different numbers of fire rows. Different numbers of fire rows and different current values of the proportional valve are selected for combustion according to different loads. When the water heater is designed, it must be ensured that the maximum load of 2 rows is greater than the minimum load of 4 rows, and the maximum load of 4 rows is greater than the minimum load of 6 rows, so as to ensure the continuity of the load.

[0048] In the embodiment, the controller controls the gas flow by adjusting the current value of the proportional valve. The opening degrees of the proportional valves of the minimum fire PL and the maximum fire PH of different sections are close, but there are slight differences between the values of the sections to ensure the stability of the flame and the load overlap. The specific values are as follows:

[0049] (1 Under the same opening degree of the proportional valve, the secondary pressure will decrease after the first sectional valve and the second sectional valve are opened. Therefore, the stability of the flame P2L and P3L is generally higher than P1L.

[0050] (2 To ensure that the load overlap area is sufficient, the current value of P1H and P2H is greater than the current value of P3H.

[0051] In the embodiment, the steps of realizing the rapid heating function are as follows:

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

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

[0054] Step 3: The combustion chamber 21 of the water pipe 2 is controlled by normal ignition. After about 10s, the water temperature gradually rises, and the water temperature t2 reaches 42 degrees at about 20s.

[0055] Step 4, the waterway of the connecting pipe 3 controls the heater 31 to be turned on to heat, about 5s later, the waterway of the water pipe 2 is heated to about 39 / 2=19.5℃, that is, the outlet water temperature=19.5+20=39.5℃, then, after the heating is completed, the hot water generated by the waterway of the water pipe 2 and the waterway of the connecting pipe 3 is mixed uniformly in the water storage tank 6, and the mixed temperature is (39.5*L2+20*L1) / 5=(39.5*2+20*3) / 5=28℃, 10s later, the waterway of the water pipe 2 starts to heat and rise, and the mixed temperature gradually rises, when the temperature of the waterway of the water pipe 2 rises to 39.5 degrees, the outlet water temperature gradually closes the waterway of the connecting pipe 3 and the heater 31, so that the flow of the waterway of the water pipe 2 is L1=5L / M IN, L2=0L / M IN after 3s. Through the control, the user can obtain heated hot water in 5-10s.

[0056] In the embodiment, the steps of realizing the scald prevention function are as follows:

[0057] Step 1, the user opens the water flow of 5L / MIN, and the target heating temperature is 42 degrees, and the inlet water temperature is 20℃.

[0058] Step 2, first, the steps 2-4 of the rapid heating function are controlled to obtain stable 42-degree hot water, at this time, the water heater heat load is about (42-20)*5=110(L / min*℃)=110 / 13(kw)=8.5(kw)

[0059] Step 3, the user opens another water, such as kitchen water, for 20s, at this time, the total flow is 8L / MIN, and the water heater constant temperature control slowly adjusts the power to (42-20)*8=176(L / min*℃)=110 / 13(kw)=13.5(kw).

[0060] Step 4, the user closes the kitchen water after 20s, and because the water heater load heating has inertia, after the hydraulic pressure is reduced, the heating load will slowly decrease, so the power will slowly decrease from 13.5kw to 8.5kw, and the duration is about 5-10s.

[0061] When the water flow is detected to be 5L / M IN, the first water regulating valve is adjusted to L1=3L / M IN, and the second water regulating valve is adjusted to L2=2L / M IN. Because the cold water can enter the water tank through the second water regulating valve to neutralize the temperature with the first water regulating valve, the water temperature can quickly decrease, so that the maximum temperature can be decreased to about 50, and then slowly decreased to 42℃, thereby realizing the scald prevention function.

[0062] The above only describes some embodiments of the present application. For ordinary skilled persons in the art, without departing from the creative concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A gas water heater, characterised in that, The utility model relates to a kind of water heater, comprising: Water heater body (1), water inlet pipe (11) and water outlet pipe (12) are communicated on the water heater body (1) respectively; Water pipe (2), the water inlet end of the water pipe (2) is communicated with the water outlet end of the water inlet pipe (11), the water outlet end of the water pipe (2) is communicated with the water inlet end of the water outlet pipe (12), and the water pipe (2) is connected with combustion chamber (21); Connecting pipe (3), the water inlet end of the connecting pipe (3) is communicated with the water outlet end of the water inlet pipe (11), the water outlet end of the connecting pipe (3) is communicated with the water inlet end of the water outlet pipe (12), and heater (31) is provided on the connecting pipe (3); First water regulating assembly (8), the first water regulating assembly (8) is provided on the water inlet end of the water pipe (2); Second water regulating assembly (9), the second water regulating assembly (9) is provided on the water outlet end of the connecting pipe (3); First temperature sensor (4), the first temperature sensor (4) is provided on the water inlet pipe (11); Second temperature sensor (5), the second temperature sensor (5) is provided on the water outlet end of the water pipe (2); Water storage tank (6), the water inlet end of the water storage tank (6) is communicated with the water outlet end of the water pipe (2) respectively, the water outlet end of the connecting pipe (3) is communicated, the water outlet end of the water storage tank (6) is communicated with the water outlet pipe (12), and third temperature sensor is provided in the water storage tank (6); Controller, the controller is electrically connected with the first water regulating assembly (8), the second water regulating assembly (9), first temperature sensor (4), the second temperature sensor (5), the third temperature sensor respectively.

2. A gas water heater as claimed in claim 1 wherein, Further comprising water pump (7) electrically connected with the controller, the water pump (7) is provided on the water inlet pipe (11), and the water outlet end of the water pump (7) is communicated with the water inlet end of the water pipe (2) respectively, the water inlet end of the connecting pipe (3) is communicated.

3. A gas water heater as claimed in claim 1 wherein, The first water regulating assembly (8) includes first water regulating valve and first water flow sensor, wherein the first water regulating valve, the first water flow sensor are provided on the water inlet end of the water pipe (2) respectively, and the first water regulating valve, the first water flow sensor are electrically connected with the controller respectively.

4. A gas water heater as claimed in claim 1 wherein, The second water regulating assembly (9) includes second water regulating valve and second water flow sensor, wherein the second water regulating valve, the second water flow sensor are provided on the water outlet end of the water pipe (2) respectively, and the second water regulating valve, the second water flow sensor are electrically connected with the controller respectively.

5. A gas water heater as claimed in claim 1 wherein, Further comprising fan electrically connected with the controller, one end of the fan is connected with the combustion chamber (21), and the other end is communicated with external air.

6. A gas water heater as claimed in claim 1 wherein, Further comprising gas valve, the gas valve is electrically connected with the controller.

7. A gas water heater as claimed in claim 6 wherein, The application further comprises a proportional valve, a first sub-valve and a second sub-valve electrically connected to the controller, wherein the air inlet end of the proportional valve is connected to the air valve, the air outlet end of the proportional valve is connected to a gas distribution rod, a plurality of nozzles are arranged on the gas distribution rod, the plurality of nozzles are divided into a first region, a second region and a third region along the transverse direction, the nozzles in the first region are controlled by the first sub-valve, the nozzles in the second region are always open, and the nozzles in the third region are controlled by the second sub-valve.

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