Waterway system and constant-temperature gas water heater

Abstract

The utility model relates to a waterway system and a constant temperature gas water heater, and relates to the technical field of water heater constant temperature, the waterway system comprises a water inlet pipe, a water pump, a stop valve, a heat exchanger and a water outlet pipe; the water inlet pipe is connected with the heat exchanger, and the heat exchanger is connected with the water outlet pipe; the water pump is arranged on the water inlet pipe, and the stop valve is arranged on the water pump; the water pump comprises an inlet, an outlet, a first water flow channel and a second water flow channel, the first water flow channel and the second water flow channel are both communicated with the inlet and the outlet of the water pump, and the first water flow channel can be cut off / conducted through the stop valve; according to the secondary ignition device, the first water flow channel of the water pump can be closed during secondary ignition, the water flow is reduced, and cold water with low flow can be heated to a higher temperature under the action of waste heat of the heat exchanger, so that the lowest temperature of water during secondary ignition is increased, and the amount of the cold water is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to water heater constant temperature technical field especially relates to a water system and constant temperature gas water heater. BACKGROUND

[0002] Gas water heater can provide hot water for user bath, has extensive application.

[0003] The existing gas water heater still needs to carry out use environment safety, system safety etc. Condition determination after closing and opening second time, and enters ignition after determining eligible, and gradually promotes temperature to set temperature after ignition eligible.

[0004] However, a large amount of cold water flows out in the last second ignition process, which causes the user to experience that the water heater is not constant temperature, and the user experience is poor. UTILITY MODEL CONTENT

[0005] The utility model provides a water system and constant temperature gas water heater to solve the technical problem of not constant temperature of gas water heater caused by second ignition.

[0006] Firstly, the utility model provides a water system, the water system includes inlet pipe, water pump, stop valve, heat exchanger and outlet pipe, the inlet pipe is connected with the heat exchanger, the heat exchanger is connected with the outlet pipe, the water pump is arranged on the inlet pipe, and the stop valve is arranged on the water pump, the water pump includes inlet, outlet, first water flow channel and second water flow channel, the first water flow channel and the second water flow channel are all communicated with the inlet and the outlet of the water pump, wherein the first water flow channel can be cut off / conducted through the stop valve.

[0007] Further technical scheme is that the water system further includes first temperature sensor, and the first temperature sensor is arranged on the water pump.

[0008] Further technical scheme is that the water system further includes second temperature sensor, and the second temperature sensor is arranged on the outlet pipe.

[0009] Further technical scheme is that the water system further includes water flow sensor, and the water flow sensor is arranged on the water pump.

[0010] Further technical scheme is that the water system further includes controller, and the controller is connected with the water pump, the stop valve, the first temperature sensor, the second temperature sensor and the water flow sensor.

[0011] Further technical scheme is that the water pump is equipped with mounting port, the first water flow channel is arranged on the lower side of the mounting port, and the stop valve is sealingly installed on the mounting port.

[0012] Further, the cut-off valve comprises a coil, a moving iron core and a blocking piece, the coil is sleeved outside the moving iron core, and the blocking piece is arranged on the lower side of the moving iron core, wherein the moving iron core can push the blocking piece downward to block the first water flow channel.

[0013] Further, the water system further comprises a gas valve and a burner, the gas valve is arranged on the gas inlet pipeline of the burner, and the gas valve is connected with the controller.

[0014] Further, the water flow sensor comprises a detection assembly and a Hall sensor, the detection assembly is arranged in the water pump, the Hall sensor is arranged on the shell of the water pump, and the Hall sensor is connected with the controller.

[0015] In a second aspect, the utility model provides a constant temperature gas water heater, the constant temperature gas water heater includes the water system as the first aspect.

[0016] Compared with the prior art, the above technical scheme provided by the utility model has the following advantages:

[0017] In the utility model embodiment, the water system comprises a water inlet pipe, a water pump, a cut-off valve, a heat exchanger and a water outlet pipe, the water inlet pipe is connected with the heat exchanger, the heat exchanger is connected with the water outlet pipe, the water pump is arranged on the water inlet pipe, and the cut-off valve is arranged on the water pump, the water pump comprises an inlet, an outlet, a first water flow channel and a second water flow channel, the first water flow channel and the second water flow channel are communicated with the inlet and the outlet of the water pump, wherein the first water flow channel can be cut off or conducted through the cut-off valve, the first water flow channel of the water pump can be closed when secondary ignition, the water flow is reduced, the cold water of low flow can be heated to a higher temperature under the action of the residual heat of the heat exchanger, so that the minimum temperature of water during secondary ignition is improved, and the amount of cold water is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings incorporated into the specification and forming a part thereof, illustrate embodiments consistent with the present utility model, and together with the specification serve to explain the principles of the present utility model.

[0019] In order to more clearly illustrate the technical scheme in the utility model embodiments or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced as follows, and obviously, other drawings can be obtained by those skilled in the art without creative labor under the premise of the drawings.

[0020] One or more embodiments are illustrated by way of example in the figures that are part of this patent document, and which are not intended to limit the present embodiments to the specific embodiments illustrated in the figures but to cover all modifications, equivalents, and alternatives falling within the scope of the present embodiments as defined by the appended claims. In the figures, like references numerals refer to like elements, unless otherwise indicated. The figures in the drawings do not necessarily bear a consistent scale in proportion.

[0021] Figure 1 A structure schematic view of a waterway system provided by the present embodiment;

[0022] Figure 2 Another structure schematic view of a waterway system provided by the present embodiment;

[0023] Figure 3 A sectional view of a water pump of a waterway system provided by the present embodiment;

[0024] Figure 4 A schematic view of a water pump of a waterway system provided by the present embodiment after dismounting a stop valve, a stator and a rotor;

[0025] Figure 5 A structure schematic view of a stop valve of a waterway system provided by the present embodiment;

[0026] Figure 6 A structure schematic view of a water pump of a waterway system provided by the present embodiment;

[0027] Figure 7 A connection schematic view of a water pump and a controller of a waterway system provided by the present embodiment;

[0028] Figure 8 A control principle diagram of a waterway system provided by the present embodiment;

[0029] Figure 9 A change relation schematic view of an inlet pressure and a water flow of a water pump provided by the present embodiment;

[0030] Figure 10 A sectional view of a stop valve of a waterway system provided by the present embodiment.

[0031] BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Inlet pipe 10, water pump 20, stop valve 30, heat exchanger 40, outlet pipe 50, first temperature sensor 60, second temperature sensor 70, water flow sensor 80, controller 90, gas valve 100, burner 110, exhaust system 120, inlet 21, outlet 22, first water flow passage 23, second water flow passage 24, mounting port 25, stator 26, rotor 27, coil 31, moving iron core 32, blocking piece 33, contact 34, fixed plate 331, sealing rubber 332, plug 333, detection assembly 81, flow guide cylinder 811, rotating piece 812, Hall sensor 82. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0034] The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. For simplicity of the disclosure, the description below of the specific examples refers only to the particular embodiments thereof, and the description that follows with reference to the drawings is not intended to limit the scope of the utility model. Furthermore, the utility model can refer to reference numerals and / or letters in different examples. Such repetition is for the sake of a simpler and clearer purpose, and does not indicate the relationship between the various embodiments and / or settings discussed.

[0035] For the convenience of description, spatial relative terms can be used in the description to describe the relative position relationship or movement condition of one element or feature relative to another element or feature as shown in the drawings, such as "internal", "external", "inboard", "outboard", "under", "below", "on", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawing is flipped over or the posture is changed or the movement state is changed, the directional indications will also change accordingly, for example: the element described as "under" or "below" another element or feature will be oriented as "above" or "above" another element or feature. Therefore, the example term "below" can include both the up and down positions. The device can be additionally oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the description are interpreted accordingly.

[0036] In order to solve the technical problem of the existing technology that the secondary ignition causes the gas water heater to be not constant temperature, the utility model provides a water system, can close the first water flow passage of water pump when secondary ignition, reduce water flow, low flow cold water can be heated to higher temperature under the action of the waste heat of heat exchanger, thereby improve the minimum temperature of water when secondary ignition, effectively reduce the amount of cold water.

[0037] Referring to Figures 1-10 The utility model embodiment provides a water system, the water system includes water inlet pipe 10, water pump 20, stop valve 30, heat exchanger 40 and water outlet pipe 50, and the specific structure is introduced as follows:

[0038] Water inlet pipe 10 is used to be connected with water source, for example tap water.The water inlet pipe 10 is connected with the heat exchanger 40, and the heat exchanger 40 is connected with the water outlet pipe 50.Heat exchanger 40 is used to exchange heat with water, thereby generating hot water.

[0039] The water pump 20 is arranged on the water inlet pipe 10, and the water pump 20 includes an inlet 21, an outlet 22, a first water flow passage 23 and a second water flow passage 24, the first water flow passage 23 and the second water flow passage 24 are in communication with the inlet 21 and the outlet 22 of the water pump 20.

[0040] Specifically, the inlet 21 of water pump 20 is used for water inflow, and the outlet 22 of water pump 20 is used for water outflow, and the first water flow passage 23 and the second water flow passage 24 are arranged in the water pump 20 and are in communication with the inlet 21 and the outlet 22.The second water flow passage 24 is in the normally open state, when the first water flow passage 23 is closed, the water flow of the water pump 20 is reduced, and when the first water flow passage 23 is opened, the water flow of the water pump 20 is increased.Further, the water pump 20 further includes a stator 26 and a rotor 27 and other components, which are not specifically limited by the utility model.

[0041] The stop valve 30 is arranged on the water pump 20, and the first water flow passage 23 can be cut off / conducted through the stop valve 30.

[0042] The utility model discloses an embodiment, water system includes inlet pipe 10, water pump 20, stop valve 30, heat exchanger 40 and outlet pipe 50, inlet pipe 10 with heat exchanger 40 is connected, heat exchanger 40 with outlet pipe 50 is connected, water pump 20 is located on inlet pipe 10, stop valve 30 is located on water pump 20, water pump 20 includes inlet 21, outlet 22, first water flow channel 23 and second water flow channel 24, first water flow channel 23 with second water flow channel 24 all with the inlet 21 of water pump 20 and the outlet 22 are communicated, wherein, through stop valve 30 can cut off / the first water flow channel 23 of conduction, the utility model discloses can close the first water flow channel 23 of water pump 20 when secondary ignition, reduce water flow, and the cold water of low flow can be heated to higher temperature under the action of the residual heat of heat exchanger 40, thereby promoting the minimum temperature of water when secondary ignition, effectively reduce the cold water amount.

[0043] Further, in some embodiments, such as the present embodiment, the water system further comprises a first temperature sensor 60, the first temperature sensor 60 is arranged on the water pump 20.

[0044] Specifically, the first temperature sensor 60 is used for detecting the inlet water temperature of the water system. The first temperature sensor 60 can be fixed on the shell of the water pump 20 by a pressing plate, so as to accurately measure the inlet water temperature. The pressing plate and the shell of the water pump 20 are fixed by fasteners.

[0045] Further, the water system further comprises a second temperature sensor 70, the second temperature sensor 70 is arranged on the outlet pipe 50.

[0046] Specifically, the second temperature sensor 70 is used for detecting the outlet water temperature of the water system.

[0047] Further, the water system further comprises a water flow sensor 80, the water flow sensor 80 is arranged on the water pump 20.

[0048] Specifically, the water flow sensor 80 is used for detecting the water flow of the water pump 20, i.e. the water flow of the water system.

[0049] Further, the water system further comprises a controller 90, a gas valve 100 and a burner 110, the gas valve 100 is arranged on the air inlet pipeline of the burner 110, the gas valve 100 is connected with the controller 90 and is controlled by the controller 90.

[0050] Specifically, the burner 110 is used for heating the heat exchanger 40. The gas valve 100 is used for controlling the flow of the gas of the burner 110. The controller 90 controls the gas amount of the burner 110 through the gas valve 100. The upper side of the burner 110 also has a smoke exhaust system 120 for exhausting smoke.

[0051] The controller 90 is connected with the water pump 20, the stop valve 30, the first temperature sensor 60, the second temperature sensor 70, the gas valve 100 and the water flow sensor 80.

[0052] Specifically, the first temperature sensor 60 is used for transmitting the water inlet temperature information of the water system to the controller 90, the second temperature sensor 70 is used for transmitting the water outlet temperature information of the water system to the controller 90, and the water flow sensor 80 is used for transmitting the water flow information of the water system to the controller 90.

[0053] The controller 90 is used for controlling the gas valve 100, the water pump 20 and the stop valve 30 according to the water inlet temperature information, the water outlet temperature information and the water flow information, for example, controlling the opening degree of the gas valve 100, controlling the rotating speed (water flow) of the water pump 20 and controlling the stop valve 30 to cut off / conduct the first water flow passage 23. Specifically, the stop valve 30 can cut off the first water flow passage 23 at the time of secondary ignition.

[0054] Further, in some embodiments, for example, in the embodiment, the water pump 20 is provided with a mounting port 25, the first water flow passage 23 is arranged at the lower side of the mounting port 25, and the stop valve 30 is sealingly mounted on the mounting port 25 (for example, sealing can be realized through a sealing gasket, and the utility model is not specifically limited).

[0055] In specific implementation, the mounting port 25 is in communication with the first water flow passage 23, and the mounting port 25 is located above the first water flow passage 23. The stop valve 30 is sealingly mounted on the mounting port 25 to avoid water leakage, and at the same time, the first water flow passage 23 can be cut off / conducted through the stop valve 30.

[0056] Further, the stop valve 30 comprises a coil 31, a moving iron core 32 and a plugging piece 33, the coil 31 is sleeved outside the moving iron core 32, and the plugging piece 33 is arranged at the lower side of the moving iron core 32, wherein the moving iron core 32 can push the plugging piece 33 downward to plug the first water flow passage 23.

[0057] Specifically, the moving iron core 32 and the blocking piece 33 can slide in the shutoff valve 30 (for example, the shutoff valve 30 is provided with a sliding channel for the moving iron core 32 and the blocking piece 33 to slide). When the shutoff valve 30 is not powered, under the action of the water inlet pressure, the blocking piece 33 moves upward, and the first water flow passage 23 is opened; when the shutoff valve 30 is powered on, the coil 31 is powered on to generate a magnetic field, so that the iron core moves downward and pushes the blocking piece 33 to block the first water flow passage 23 downward, so that the first water flow passage 23 is cut off.

[0058] The blocking piece 33 can specifically include a fixed plate 331 and a sealing rubber 332 and a plug 333 provided on the fixed plate 331. The sealing rubber 332 plays a sealing role, and the plug 333 plays a role of blocking the first water flow passage 23.

[0059] Further, in some embodiments, for example, in the embodiment, the water flow sensor 80 includes a detection assembly 81 and a Hall sensor 82, the detection assembly 81 is arranged in the water pump 20, and the Hall sensor 82 is arranged on the shell of the water pump 20, and the Hall sensor 82 is connected with the controller 90.

[0060] Specifically, the detection assembly 81 includes a flow guide cylinder 811 and a rotating piece 812 arranged in the flow guide cylinder 811, and the rotating piece 812 can rotate under the action of water flow. The Hall sensor 82 is used for detecting the rotating speed of the rotating piece 812. The Hall sensor 82 is connected with the controller 90, and is used for transmitting the rotating speed information (i.e. water flow information) of the rotating piece 812 to the controller 90, and the controller 90 determines the water flow based on the rotating speed information.

[0061] Referring to Figure 9 , Figure 9 The water pump 20 provided by the embodiment of the utility model provides a water inlet pressure and water flow change relation diagram of the water pump 20, so it is known that the opening and closing of the first water flow passage 23 in the two passages (the first water flow passage 23 and the second water flow passage 24) of the water pump 20 can realize stepless speed regulation from water reduction to water increase, and the overall water amount can cover all water amounts required by users. The water pump 20 realizes the opening and closing of the first water flow passage 23 based on the control of the controller 90, and simultaneously realizes the change of the power of the water pump 20 based on the control of the controller 90, and further realizes the change of the water amount.

[0062] Constant temperature principle

[0063] When the user's use temperature in winter cannot reach the set temperature, the first water flow passage 23 is closed, and the water flow is adjusted to the maximum water amount that can meet the user's set temperature;

[0064] When the user stops the water in the middle of bathing, the first water flow passage 23 is closed, the secondary start water flow is reduced, and the secondary opening temperature drop is reduced.

[0065] The constant temperature process is determined by the controller 90 based on the detection signals of the first temperature sensor 60, the second temperature sensor 70 and the water flow sensor 80, the water temperature difference and the water flow are determined in real time, the gas valve 100 is controlled to adjust the gas quantity in real time, so that the constant temperature gas water heater is controlled to run in constant temperature.

[0066] The utility model embodiment proposes a constant temperature gas water heater, the constant temperature gas water heater includes the water route system as any one of the above embodiment.

[0067] In the above embodiment, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0068] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0069] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0070] In the utility model, unless otherwise specifically defined and limited, the terms "installation", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be connected, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0071] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include the first and second features directly contacting, or the first and second features not directly contacting but contacting through another feature between them. Moreover, the first feature "on", "above" and "on top of" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "underneath" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0072] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application.

[0073] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, these modifications and variations of the present application are intended to be included within the scope of the claims of the present application and their equivalents. The present application is intended to include these modifications and variations.

[0074] The above is a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A waterway system characterized by, The waterway system comprises a water inlet pipe, a water pump, a stop valve, a heat exchanger and a water outlet pipe; the water inlet pipe is connected with the heat exchanger, the heat exchanger is connected with the water outlet pipe; the water pump is arranged on the water inlet pipe, and the stop valve is arranged on the water pump; the water pump comprises an inlet, an outlet, a first water flow channel and a second water flow channel, and the first water flow channel and the second water flow channel are both communicated with the inlet and the outlet of the water pump, wherein the first water flow channel can be cut off / conducted by the stop valve.

2. The waterway system of claim 1, wherein, The waterway system further comprises a first temperature sensor arranged on the water pump.

3. The waterway system of claim 2, wherein, The waterway system further comprises a second temperature sensor arranged on the water outlet pipe.

4. The waterway system of claim 3, wherein, The waterway system further comprises a water flow sensor arranged on the water pump.

5. The waterway system of claim 4, wherein, The waterway system further comprises a controller connected with the water pump, the stop valve, the first temperature sensor, the second temperature sensor and the water flow sensor.

6. The waterway system of claim 1, wherein, The water pump is provided with a mounting port, the first water flow channel is arranged on the lower side of the mounting port, and the stop valve is sealingly mounted on the mounting port.

7. The waterway system of claim 6, wherein, The stop valve comprises a coil, a movable iron core and a blocking piece, the coil is sleeved on the outer side of the movable iron core, and the blocking piece is arranged on the lower side of the movable iron core, wherein the movable iron core can push the blocking piece downward to block the first water flow channel.

8. The water routing system of claim 5, wherein, The waterway system further comprises a gas valve and a burner, the gas valve is arranged on the air inlet pipeline of the burner, and the gas valve is connected with the controller.

9. The water routing system of claim 5, wherein, The water flow sensor comprises a detection assembly and a Hall sensor, the detection assembly is arranged in the water pump, the Hall sensor is arranged on the shell of the water pump, and the Hall sensor is connected with the controller.

10. A thermostatic gas water heater, characterised in that, The constant-temperature gas water heater comprises the waterway system according to any one of claims 1-9.

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