WO2018018977A1 - 燃气热水器 - Google Patents

燃气热水器 Download PDF

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Publication number
WO2018018977A1
WO2018018977A1 PCT/CN2017/082592 CN2017082592W WO2018018977A1 WO 2018018977 A1 WO2018018977 A1 WO 2018018977A1 CN 2017082592 W CN2017082592 W CN 2017082592W WO 2018018977 A1 WO2018018977 A1 WO 2018018977A1
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WIPO (PCT)
Prior art keywords
water
gas
inlet
pipe
heat exchanger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/082592
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English (en)
French (fr)
Inventor
黄官贤
王明
杜小文
陆祖安
梁国荣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Original Assignee
Midea Group Co Ltd
Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201610606163.3A external-priority patent/CN106091357A/zh
Priority claimed from CN201620806037.8U external-priority patent/CN206055937U/zh
Application filed by Midea Group Co Ltd, Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd filed Critical Midea Group Co Ltd
Publication of WO2018018977A1 publication Critical patent/WO2018018977A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium

Definitions

  • the present invention relates to the field of electrical appliance manufacturing technology, and in particular to a gas water heater.
  • the gas water heater in the related art adopts a partial premixed combustion mode, which has a low combustion efficiency and cannot meet the emission requirements of low harmful gases.
  • some gas water heaters use a full premixed combustion mode, but full premixed combustion requires high matching of gas and air, and noise is prone to occur under high load operation.
  • the present invention aims to solve at least one of the above technical problems in the prior art to some extent.
  • the present invention provides a gas water heater, which has the advantages of low noise, high space utilization, and the like.
  • a gas water heater comprising: a casing, the casing comprising a mounting plate adapted to be mounted on a wall, the casing being provided with a smoke exhaust a port, a cold water inlet, a hot water outlet, a gas inlet and an air inlet; a heat exchanger, the heat exchanger is disposed in the casing, and the heat exchanger is provided with a water inlet connected to the cold water inlet, and a water outlet connected to the hot water outlet, a flue gas inlet and a flue gas outlet; a burner for heating the heat exchanger, the burner being disposed in the casing and communicating with the flue gas inlet The burner is provided with a mixed gas inlet respectively communicating with the gas inlet and the air inlet; and a smoke exhausting pipe, wherein the exhaust pipe is respectively connected with the flue gas outlet and the exhaust vent, and at least a part thereof Located between the heat exchanger and the mounting
  • the gas water heater according to the embodiment of the invention has the advantages of low noise, high space utilization and the like.
  • gas water heater according to the above embodiment of the present invention may further have the following additional technical features:
  • the cross section of the casing is substantially rectangular and the length of the cross section of the casing in the left-right direction is greater than the length in the front-rear direction, and the cross section of the exhaust pipe is substantially rectangular. And the length of the cross section of the exhaust pipe in the left-right direction is greater than the length in the front-rear direction.
  • the gas water heater further includes an adapter tube respectively connected to the exhaust port and the exhaust pipe, the exhaust port being located on a top wall of the casing, the burning The heater is located above the heat exchanger, and the adapter tube is disposed within the housing and above the burner.
  • the transfer tube is provided with a smoke temperature sensor.
  • the length of the housing in the vertical direction is less than 800 mm
  • the housing is The length in the left-right direction is less than 600 mm
  • the length of the casing in the front-rear direction is less than 400 mm.
  • the gas water heater further includes a water receiving box for collecting condensed water generated by the heat exchanger, the water receiving box being located below the heat exchanger and with the flue gas outlet Connected.
  • a mixer is connected to the mixed gas inlet, and the mixer is provided with a gas passage communicating with the gas inlet and an air passage communicating with the air inlet.
  • a U-shaped silencer tube is connected to the air inlet.
  • the gas water heater further includes: a circulation line that is respectively connected to the water inlet and the water outlet; a circulating water pump, the circulating water pump is connected to the circulation pipe On the road.
  • the gas water heater further includes an inlet pipe and an outlet pipe, wherein the inlet pipe is respectively connected to the water inlet and the cold water inlet, and the outlet pipe is respectively connected to the water outlet and the water outlet a hot water outlet connected to the inlet pipe and the outlet pipe, wherein a connection node of the circulation pipe and the inlet pipe is located between the water inlet and the cold water inlet, The connection node of the circulation line and the outlet pipe is located between the water outlet and the hot water outlet.
  • the gas water heater further includes a water storage tank connected to the water inlet pipe and located at a connection node of the circulation pipe and the water inlet pipe and the water inlet between.
  • the gas water heater further includes a water storage tank connected to the outlet pipe and located at a connection node of the circulation pipe and the water outlet pipe and the water outlet between.
  • the water storage tank and the heat exchanger are respectively disposed adjacent to opposite side walls of the housing.
  • the gas water heater further includes a controller and a gas proportional valve, the gas proportional valve is connected to the mixer inlet, the controller and the gas proportional valve and the cycle respectively
  • the water pump communicates and controls the circulating water pump to operate for a predetermined time after the gas proportional valve is closed.
  • a circulation on-off valve is connected to the circulation line, and the circulating on-off valve communicates with the controller.
  • the gas water heater further includes a water flow sensor connected to the inlet pipe and located at a connection node of the circulation pipe and the inlet pipe and the water inlet
  • the water flow sensor is in communication with the controller.
  • the circulation line is provided with a return pipe joint for connecting the return pipe.
  • the circulation line is located below the heat exchanger.
  • the cold water inlet, the hot water outlet and the gas inlet are located on a bottom wall of the housing.
  • FIG. 1 is a cross-sectional view of a gas water heater in accordance with an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of a gas water heater in accordance with an embodiment of the present invention.
  • FIG 3 is a cross-sectional view of a gas water heater in accordance with an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of a gas water heater in accordance with an embodiment of the present invention.
  • Figure 5 is a cross-sectional view of a gas water heater in accordance with an embodiment of the present invention.
  • Figure 6 is a partial structural schematic view of a gas water heater in accordance with an embodiment of the present invention.
  • Figure 7 is a partial structural schematic view of a gas water heater according to another embodiment of the present invention.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • a gas water heater 1 according to an embodiment of the present invention will be described below with reference to the drawings.
  • a gas water heater 1 As shown in FIGS. 1 to 7, a gas water heater 1 according to an embodiment of the present invention includes a casing 100, a heat exchanger 200, and combustion. The unit 300 and the exhaust pipe 400.
  • the housing 100 includes a mounting plate 110 adapted to be mounted to a wall, the housing 100 having a venting port 120, a cold water inlet 130, a hot water outlet 140, a gas inlet 150, and an air inlet.
  • the heat exchanger 200 is disposed in the casing 100.
  • the heat exchanger 200 is provided with a water inlet 210 communicating with the cold water inlet 130, a water outlet 220 communicating with the hot water outlet 140, a flue gas inlet and a flue gas outlet.
  • the burner 300 is used to heat the heat exchanger 200.
  • the burner 300 is disposed in the casing 100 and communicates with the flue gas inlet.
  • the heat exchanger 200 is provided with a mixture respectively communicating with the gas inlet 150 and the air inlet. Gas import.
  • the exhaust pipe 400 is in communication with the flue gas outlet and the exhaust vent 120, respectively, and at least a portion is located between the heat exchanger 200 and the mounting plate 110.
  • the gas entering the casing 100 through the gas inlet 150 and the air entering the casing 100 through the air inlet are mixed by providing the heat exchanger 200, the burner 300, and the exhaust pipe 400.
  • the heat exchanger 200 is heated by burning in the combustor 300, and the water at the water source enters the heat exchanger 200 through the water inlet 210 to be heated, and then discharged through the water outlet 220 and the hot water outlet 140 for use by the user.
  • the flue gas generated by the combustion of the burner 300 enters the exhaust pipe 400 through the flue gas outlet, and is finally discharged through the exhaust port 120 to facilitate the transportation and processing of the flue gas.
  • the exhaust pipe 400 can be adjacent to the wall where the gas water heater 1 is located, for example, the rear wall of the casing 100 constitutes a mounting plate. 110.
  • the heat exchanger 200 is disposed adjacent to a front wall of the housing 100 and the exhaust pipe 400 is disposed adjacent to a rear wall of the housing 100.
  • at least a portion of the exhaust pipe 400 may be located behind the heat exchanger 200, so that the exhaust pipe 400 is closer to the wall than the heat exchanger 200, so that the flue gas passes through the exhaust pipe.
  • the noise generated at 400 is easily absorbed by the wall, making it difficult for the user to hear the noise generated at the exhaust pipe 400, thereby reducing the noise generated when the gas water heater 1 is operated, and improving the comfort of the user.
  • the utilization of the space inside the casing 100 can be improved, and the space inside the casing 100 can be saved, for example, the casing can be easily reduced.
  • the size of the body 100 in the left-right direction thereby reducing the space occupied by the gas water heater 1, making the gas water heater 1 more suitable for general household use.
  • the gas water heater 1 according to the embodiment of the present invention has the advantages of low noise, high space utilization, and the like.
  • a gas water heater 1 according to an embodiment of the present invention will now be described with reference to the accompanying drawings.
  • a gas water heater 1 in some embodiments of the present invention, as shown in FIGS. 1-7, includes a housing 100, a heat exchanger 200, a burner 300, and a smoke exhaust pipe 400.
  • the cross section of the housing 100 is substantially rectangular and the length of the cross section of the housing 100 in the left and right direction is greater than the front and rear.
  • the upward length, the cross section of the exhaust pipe is substantially rectangular, and the length of the cross section of the exhaust pipe in the left-right direction is greater than the length in the front-rear direction (up and down direction is as shown by the arrow A in FIG. 1 - FIG.
  • the left and right directions are as shown by an arrow C in FIGS. 1 and 3 to 5, and the front and rear directions are as indicated by an arrow B in FIG. 2).
  • the gas water heater 1 further includes an adapter tube 410 connected to the exhaust port 120 and the exhaust pipe 400, respectively, and the exhaust port 120 is located on the top wall of the casing 100, and the burner 300 Located above the heat exchanger 200, the transfer tube 410 is disposed within the housing 100 and above the burner 300.
  • the communication between the exhaust pipe 400 and the exhaust port 120 can be facilitated, the flue gas can be discharged out of the casing 100, and the exhaust port 120 can be conveniently disposed adjacent to the center of the top wall of the casing 100 for facilitating the exhaust port 120.
  • Connect the external exhaust pipe Connect the external exhaust pipe.
  • the transfer tube 410 has a circular cross section.
  • a smoke temperature sensor 411 is disposed on the transfer tube 410.
  • the temperature of the flue gas passing through the transfer pipe 410 can be detected by the smoke temperature sensor 411 to adjust the combustion state of the burner 300 according to the temperature of the flue gas, so that the generation of harmful gas can be easily avoided.
  • the length of the casing 100 in the vertical direction is less than 800 mm
  • the length of the casing in the left-right direction is less than 600 mm
  • the length of the casing in the front-rear direction is less than 400 mm. This can reduce the space occupied by the gas water heater 1, facilitate the installation of the gas water heater 1, and improve the acceptance of the user.
  • the gas water heater 1 further includes a water receiving box 500 for collecting condensed water generated by the heat exchanger 200, and the water receiving box 500 is located below the heat exchanger 200 and is in communication with the flue gas outlet.
  • the burner 300 directly heats the upper portion of the heat exchanger 200, and the flue gas generated by the combustion further exchanges heat with the heat exchanger 200 at the lower portion of the heat exchanger 200, and the water vapor in the flue gas after heat exchange occurs. After condensing, it falls into the water receiving box 500. This can facilitate the collection of the condensed water, and can fully utilize the heat generated by the combustion of the burner 300, thereby improving the heating effect of the gas water heater 1 and reducing the energy consumption of the gas water heater 1.
  • the smoke exhaust pipe 400 may be attached to the rear surface of the water receiving box 500.
  • a mixer 600 is connected to the mixed gas inlet, and the mixer 600 is provided with a gas passage communicating with the gas inlet 150 and an air passage communicating with the air inlet.
  • the mixer 600 can be a venturi mixer and located above the combustor 300. This allows the gas and air to enter the mixer 600 for premixing and then enter the burner 300 through the mixture inlet, thereby facilitating full premixed combustion, improving the energy efficiency of the gas water heater 1 and reducing emissions.
  • a U-shaped muffler 610 is connected to the air inlet. This can drop The noise generated by the low air passing through the air inlet further improves the comfort of the user.
  • Figures 1-7 illustrate a gas water heater 1 in accordance with some embodiments of the present invention.
  • the gas water heater 1 further includes a circulation line 700 and a circulation water pump 710.
  • the circulation line 700 is in communication with the water inlet 210 and the water outlet 220, respectively.
  • a circulating water pump 710 is connected to the circulation line 700.
  • the circulation line 700 and the circulating water pump 710 By providing the circulation line 700 and the circulating water pump 710, the water inlet 210 and the water outlet 220 of the heat exchanger 200 can be communicated by the circulation line 700, so that the water in the heat exchanger 200 can circulate with the water in the circulation line 700. exchange.
  • the water in the circulation line 700 is driven to start by circulating the circulating water pump 710 to cause the water in the circulation line 700 to circulate with the water in the heat exchanger 200, thereby reducing the heat exchanger 200.
  • the water temperature prevents the superheated water from remaining in the heat exchanger 200, causing scale to be generated in the heat exchanger 200, so that the heat exchanger 200 can be made difficult to structure.
  • the heat exchanger 200 since the heat exchanger 200 is not easy to structure, the heat exchanger 200 can be prevented from affecting the heat exchange effect due to the structure, so that the service life of the heat exchanger 200 can be prolonged. Since the heat exchanger 200 can reduce the temperature of the water in the heat exchanger 200 by circulating the stored water, the problem of the structure inside the heat exchanger 200 caused by the slow cooling of the stored water due to the increase in the volume of the heat exchanger 200 can be avoided. It is convenient to enlarge the volume of the heat exchanger 200 and improve the heat exchange efficiency of the heat exchanger 200.
  • the water flow can be used normally by the user so that the circulating water pump 710 is not passed, so as to reduce the water resistance of the user during normal use, thereby preventing the circulating water pump 710 from affecting the user.
  • the water flow rate when using water improves the comfort of the user.
  • the gas water heater 1 further includes an inlet pipe 810 and an outlet pipe 820, and the inlet pipe 810 is connected to the water inlet 210 and the cold water inlet 130, respectively, and the outlet pipe 820 is respectively connected to the water outlet 220 and the hot water.
  • the outlets 140 are connected, and the circulation pipelines 700 are respectively connected to the inlet pipe 810 and the outlet pipe 820.
  • the connection node of the circulation pipe 700 and the inlet pipe 810 is located between the water inlet 210 and the cold water inlet 130, and the circulation pipe 700 and the outlet pipe 820 are The connection node is located between the water outlet 220 and the hot water outlet 140. In this way, the connection of the circulation line 700 can be realized, and the water inlet can pass through the partial inlet pipe 810 and the partial outlet pipe 820, thereby improving the cooling effect on the heat exchanger 200.
  • the gas water heater 1 further includes a water storage tank 900 connected to the inlet pipe 810 and located at a connection node of the circulation line 700 and the inlet pipe 810, and Between the water inlets 210. This allows water in the water storage tank 900 to participate in the circulation of the water in the circulation line 700 and the water in the heat exchanger 200, circulating the water in the water storage tank 900 and the water in the heat exchanger 200.
  • the gas water heater 1 further includes a water storage tank 900 connected to the outlet pipe 820 and located at a connection node of the circulation line 700 and the outlet pipe 820. And the water outlet 220 between.
  • a water storage tank 900 connected to the outlet pipe 820 and located at a connection node of the circulation line 700 and the outlet pipe 820.
  • the water outlet 220 between.
  • This allows water in the water storage tank 900 to participate in the circulation of the water in the circulation line 700 and the water in the heat exchanger 200, circulating the water in the water storage tank 900 and the water in the heat exchanger 200. Exchanging, thereby further reducing the temperature of the heat exchanger 200, and since the water storage tank 900 is connected to the water outlet pipe 820, the hot water flowing out through the water outlet pipe 820 can be first buffered by the water storage tank 900 to avoid the hot water outlet 140. The water that flows out is hot and cold.
  • the water inlet tank 810 and the water outlet pipe 820 may each be provided with a water storage tank 900.
  • the volume of the water storage tank 900 is 1-2L. In this way, the cooling effect on the heat exchanger 200 can be improved while ensuring the heating rate of the water.
  • the water storage tank 900 and the heat exchanger 200 are disposed adjacent to opposite side walls of the housing 100, respectively.
  • the water storage tank 900 may be disposed adjacent to the upper left corner of the housing 100, and the heat exchanger 200 may be located at the lower right of the water storage tank 900. This can leave enough space for the pipeline connecting the water storage tank 900 and the heat exchanger 200 to improve the utilization of the space inside the casing 100, further facilitate the control of the size of the casing 100, and reduce the space occupied by the gas water heater 1.
  • the gas water heater 1 further includes a controller 1000 and a gas proportional valve 1100.
  • the gas proportional valve 1100 is in communication with the mixed gas inlet, and the controller 1000 is respectively associated with the gas proportional valve 1100 and the circulating water pump.
  • the 710 communicates and controls the circulating water pump 710 to operate for a predetermined time after the gas proportional valve 1100 is closed.
  • the controller 1000 can automatically control the startup of the circulating water pump 710.
  • the gas proportional valve 1100 is closed, the gas stops entering the burner 300, the burner 300 stops heating, and the controller 1000 controls the circulation line 700 to operate.
  • the water flow is circulated, and the cycle is stopped after a predetermined time to save energy. This allows automatic control of the circulating water pump 710.
  • the predetermined time may be less than 30 seconds.
  • the controller 1000 can be disposed side by side with the water storage tank 900.
  • a circulation on-off valve 720 is connected to the circulation line 700, the circulating on-off valve 720 is in communication with the controller 1000, and the controller 1000 controls the cycle after the gas proportional valve 1100 is closed.
  • the on-off valve 720 opens for the predetermined time. In this way, the circulating on-off valve 720 can be closed when the user normally uses water, the cold water at the inlet pipe 810 is prevented from entering the outlet pipe 820, and the circulating on-off valve 720 is opened after the user ends the water, so that the water at the heat exchanger 200 can be The water in the circulation line 700 is cyclically exchanged.
  • the gas water heater 1 further includes a water flow sensor 1200 connected to the inlet pipe 810 and located at the connection node and the water inlet 210 of the circulation pipe 700 and the inlet pipe 810 .
  • the controller 1000 controls the gas proportional valve 1100 to close after the water flow sensor 1200 detects that the water flow has stopped.
  • the water flow sensor 1200 can be used to detect whether the user stops using water, thereby automatically controlling the gas proportional valve 1100 to close, and stopping the gas from entering the burner 300.
  • the water flow sensor 1200 is located between the connection node of the circulation line 700 and the inlet pipe 810 and the water inlet 210. After the gas proportional valve 1100 is closed, it is possible to detect whether there is water flowing in the inlet pipe 810 to determine whether the circulating water pump 710 is working normally.
  • the gas water heater 1 further includes a water temperature detecting device (not shown) that communicates with the controller 1000, and the water temperature detecting device is disposed on the water outlet pipe 820 or the return pipe 2.
  • the controller 1000 controls the circulation water pump 710 and the circulation on-off valve 720 to open when the detected value of the water temperature detecting means is lower than a predetermined value.
  • the circulating water pump 710 and the circulating on-off valve 720 are opened to cyclically exchange the water in the pipeline and the water storage tank 900 with the water in the heat exchanger 200, thereby The water in the outlet pipe 820 or the return pipe 2 is preheated to shorten the waiting time when the user uses the hot water again, thereby improving the comfort of the user.
  • the water inlet 210 and the water outlet 220 may be located on the same side wall of the heat exchanger 200.
  • the inlet pipe 810 may extend from below the heat exchanger 200 to the left or right side of the heat exchanger 200.
  • FIGS. 1 to 5 show a gas water heater 1 according to a specific example of the present invention.
  • a circulation pipe joint 730 for connecting a return pipe is provided on the circulation line 700. This makes it possible to connect the return pipe 2 with the return pipe joint 730 to cyclically exchange water in the return pipe 2 with the water in the heat exchanger 200.
  • the circulation line 700 is located below the heat exchanger 200. This can further improve the utilization of space and reduce the size of the housing 100.
  • the cold water inlet 130, the hot water outlet 140, and the gas inlet 150 are located on the bottom wall of the housing 100. This facilitates the connection of the external line to the gas water heater 1 from below.
  • the heat exchanger 200 can be a stainless steel piece or a copper piece.
  • a check valve can be connected to the return pipe joint 730. This prevents cold water from flowing to the hot water end.
  • a gas line 830 is connected between the gas inlet 150 and the gas passage, and the gas proportional valve 1100 is connected to the gas line 830 and located on the left side of the heat exchanger 200.
  • the gas line 830 extends from the bottom wall of the housing 100 through the side of the heat exchanger 200 to above the combustor 300.
  • the circulation on-off valve 720 is closed, the circulating water pump 710 is closed, the gas proportional valve 1100 is opened, and the gas passes through the gas line 830.
  • the mixer 600 is entered, mixed with air entering the mixer 600 through the U-shaped muffler 610, and then entered into the combustor 300 for combustion to heat the heat exchanger 200.
  • the water at the water source enters the heat exchanger 200 through the inlet pipe 810, is heated by the burner 300, is buffered by the outlet pipe 820 through the water storage tank 900, and is discharged from the hot water outlet 140 for use by the user.
  • the water storage tank 900 is disposed on the water inlet pipe 810, the water at the water source passes through the water inlet pipe 810 through the water storage tank 900 and enters the heat exchanger 200.
  • the controller 1000 controls the gas proportional valve 1100 to be closed, and controls the circulating water pump 710 to be started, the circulating on-off valve 720 is opened, and the high-temperature water in the heat exchanger 200 and the water in the water storage tank 900 are circulated through the circulation line 700. Exchange, reduce the water temperature inside the heat exchanger 200, thereby reducing the probability of high temperature water scaling.
  • FIG. 4 and 6 show an embodiment in which the water storage tank 900 is disposed on the water outlet pipe 820.
  • FIG. 7 shows an embodiment in which the water storage tank 900 is provided on the water inlet pipe 810.
  • the gas water heater 1 may further have a preheating cycle function.
  • the controller 1000 controls the circulating water pump 710 and the circulating on/off valve 720 to open when the detected value of the water temperature detecting device is less than a predetermined value.
  • the circulation is circulated between the water storage tank 900 and the heat exchanger 200 until the detected value of the water temperature detecting device is greater than a predetermined value. Therefore, it can be ensured that the water storage temperature of the water storage tank 900 is within the range of the user setting value, and the user is allowed to use the rapid hot water for the next time.
  • the return pipe 2 When the user pre-packs the return pipe 2, as shown in FIG. 5, the return pipe 2 is connected to the return pipe joint 730 and the hot water outlet 140, respectively. After the user stops using water, the circulation on-off valve 720 is closed, the circulating water pump 710 is started, and water circulates between the return pipe 2 and the heat exchanger 200.
  • the circulating water pump 710 stops after a predetermined time of operation.
  • the circulation water pump 710 stops after the detected value of the temperature detecting device reaches a predetermined value.
  • the water temperature can be kept within the set temperature range, and when the user opens the faucet, the hot water can be turned on immediately, which effectively reduces the situation of starting the cold water.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or in one piece; it may be a mechanical connection, or it may be an electrical connection or a communication with each other; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship between two elements. Unless otherwise expressly defined. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

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Abstract

一种燃气热水器 (1)，包括：壳体 (100)，壳体 (100)包括适于安装在墙壁上的安装板 (110)，壳体 (100)上设有排烟口 (120)；换热器 (200)，换热器 (200)上设有烟气进口和烟气出口；燃烧器 (300)，燃烧器 (300)与烟气进口连通；排烟管 (400)，排烟管 (400)分别与烟气出口和排烟口 (120)连通且至少一部分位于换热器 (200)和安装板 (110)之间。

Description

燃气热水器 技术领域
本发明涉及电器制造技术领域，具体而言，涉及一种燃气热水器。
背景技术
相关技术中的燃气热水器采用部分预混式燃烧方式，这种燃烧方式燃烧效率较低，且无法满足低有害气体的排放要求。为此，部分燃气热水器采用全预混的燃烧方式，但全预混燃烧对燃气和空气的匹配要求较高，高负荷工作状态下容易出现噪音。
发明内容
本发明旨在至少在一定程度上解决现有技术中的上述技术问题之一。为此，本发明提出一种燃气热水器,该燃气热水器具有噪音低、空间利用率高等优点。
为实现上述目的，根据本发明的实施例提出一种燃气热水器，所述燃气热水器包括：壳体，所述壳体包括适于安装在墙壁上的安装板，所述壳体上设有排烟口、冷水进口、热水出口、燃气进口和空气进口；换热器，所述换热器设在所述壳体内，所述换热器上设有与所述冷水进口连通的进水口、与所述热水出口连通的出水口、烟气进口和烟气出口；用于对所述换热器加热的燃烧器，所述燃烧器设在所述壳体内且与所述烟气进口连通，所述燃烧器上设有分别与所述燃气进口和所述空气进口连通的混合气进口；排烟管，所述排烟管分别与所述烟气出口和所述排烟口连通且至少一部分位于所述换热器和所述安装板之间。
根据本发明实施例的燃气热水器，具有噪音低、空间利用率高等优点。
另外，根据本发明上述实施例的燃气热水器还可以具有如下附加的技术特征：
根据本发明的一个实施例，所述壳体的横截面大体为长方形且所述壳体的横截面在左右方向上的长度大于前后方向上的长度，所述排烟管的横截面大体为长方形且所述排烟管的横截面在左右方向上的长度大于前后方向上的长度。
根据本发明的一个实施例，所述燃气热水器还包括分别与所述排烟口和所述排烟管相连的转接管，所述排烟口位于所述壳体的顶壁上，所述燃烧器位于所述换热器上方，所述转接管设在所述壳体内且位于所述燃烧器上方。
根据本发明的一个实施例，所述转接管上设有烟温传感器。
根据本发明的一个实施例，所述壳体在竖直方向上的长度小于800毫米，所述壳体在 左右方向上的长度小于600毫米，所述壳体在前后方向上的长度小于400毫米。
根据本发明的一个实施例，所述燃气热水器还包括用于收集所述换热器产生的冷凝水的接水盒，所述接水盒位于所述换热器下方且与所述烟气出口连通。
根据本发明的一个实施例，所述混合气进口上连接有混合器，所述混合器上设有与所述燃气进口连通的燃气过口以及与所述空气进口连通的空气过口。
根据本发明的一个实施例，所述空气进口上连接有U型消音管。
根据本发明的一个实施例，所述燃气热水器还包括：循环管路，所述循环管路分别与所述进水口和所述出水口连通；循环水泵，所述循环水泵连接在所述循环管路上。
根据本发明的一个实施例，所述燃气热水器还包括进水管和出水管，所述进水管分别与所述进水口和所述冷水进口相连，所述出水管分别与所述出水口和所述热水出口相连，所述循环管路分别与所述进水管和所述出水管相连，所述循环管路与所述进水管的连接节点位于所述进水口和所述冷水进口之间，所述循环管路与所述出水管的连接节点位于所述出水口和所述热水出口之间。
根据本发明的一个实施例，所述燃气热水器还包括储水罐，所述储水罐连接在所述进水管上且位于所述循环管路与所述进水管的连接节点以及所述进水口之间。
根据本发明的一个实施例，所述燃气热水器还包括储水罐，所述储水罐连接在所述出水管上且位于所述循环管路与所述出水管的连接节点以及所述出水口之间。
根据本发明的一个实施例，所述储水罐和所述换热器分别邻近所述壳体相对的两侧壁设置。
根据本发明的一个实施例，所述燃气热水器还包括控制器和燃气比例阀，所述燃气比例阀连接在所述混合器进口上，所述控制器分别与所述燃气比例阀和所述循环水泵通讯且在所述燃气比例阀关闭后控制所述循环水泵运行预定时间。
根据本发明的一个实施例，所述循环管路上连接有循环通断阀，所述循环通断阀与所述控制器通讯。
根据本发明的一个实施例，所述燃气热水器还包括水流量传感器，所述水流量传感器连接在所述进水管上且位于所述循环管路与所述进水管的连接节点与所述进水口之间，所述水流量传感器与所述控制器通讯。
根据本发明的一个实施例，所述循环管路上设有用于连接回水管的回水管接头。
根据本发明的一个实施例，所述循环管路位于所述换热器的下方。
根据本发明的一个实施例，所述冷水进口、热水出口和燃气进口位于所述壳体的底壁上。
附图说明
图1是根据本发明实施例的燃气热水器的剖视图。
图2是根据本发明实施例的燃气热水器的剖视图。
图3是根据本发明实施例的燃气热水器的剖视图。
图4是根据本发明实施例的燃气热水器的剖视图。
图5是根据本发明实施例的燃气热水器的剖视图。
图6是根据本发明一个具体实施例的燃气热水器的局部结构示意图。
图7是根据本发明另一个具体实施例的燃气热水器的局部结构示意图。
附图标记：燃气热水器1、壳体100、安装板110、排烟口120、冷水进口130、热水出口140、燃气进口150、换热器200、进水口210、出水口220、燃烧器300、排烟管400、转接管410、烟温传感器411、接水盒500、混合器600、U型消音管610、循环管路700、循环水泵710、循环通断阀720、回水管接头730、进水管810、出水管820、燃气管路830、储水罐900、控制器1000、燃气比例阀1100、水流量传感器1200。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
下面参考附图描述根据本发明实施例的燃气热水器1。
如图1-图7所示，根据本发明实施例的燃气热水器1包括壳体100、换热器200、燃烧 器300和排烟管400。
壳体100包括适于安装在墙壁上的安装板110，壳体100上设有排烟口120、冷水进口130、热水出口140、燃气进口150和空气进口。换热器200设在壳体100内，换热器200上设有与冷水进口130连通的进水口210、与热水出口140连通的出水口220、烟气进口和烟气出口。燃烧器300用于对换热器200加热，燃烧器300设在壳体100内且与所述烟气进口连通，换热器200上设有分别与燃气进口150和所述空气进口连通的混合气进口。排烟管400分别与所述烟气出口和排烟口120连通且至少一部分位于换热器200和安装板110之间。
根据本发明实施例的燃气热水器1，通过设置换热器200、燃烧器300和排烟管400，使通过燃气进口150进入壳体100的燃气和通过所述空气进口进入壳体100的空气混合后进入燃烧器300，在燃烧器300内燃烧对换热器200进行加热，同时水源处的水经过进水口210进入换热器200进行加热后通过出水口220和热水出口140排出供用户使用，以实现向用户供应热水。并且，燃烧器300燃烧产生的烟气通过所述烟气出口进入排烟管400，最后通过排烟口120排出，以便于烟气的输送和处理。
并且，通过将排烟管400的至少一部分设在换热器200和安装板110之间，可以使排烟管400邻近燃气热水器1所在的墙体，例如，壳体100的后壁构成安装板110，换热器200邻近壳体100的前壁设置且排烟管400邻近壳体100的后壁设置。相比相关技术中的燃气热水器，可以使排烟管400的至少一部分位于换热器200的后方，以使排烟管400较换热器200更加贴近墙体，从而使烟气经过排烟管400时产生的噪音易于被墙体吸收，使用户不易听到排烟管400处产生的噪音，从而降低燃气热水器1工作时产生的噪音，提高用户使用时的舒适性。
此外，通过将排烟管400的至少一部分设置在换热器200与安装板110之间，可以提高壳体100内空间的利用率，节省壳体100内部的空间，例如，可以便于减小壳体100在左右方向上的尺寸，从而降低燃气热水器1占用的空间，使燃气热水器1更加适于一般家庭使用。
因此，根据本发明实施例的燃气热水器1具有噪音低、空间利用率高等优点。
下面参考附图描述根据本发明具体实施例的燃气热水器1。
在本发明的一些具体实施例中，如图1-图7所示，根据本发明实施例的燃气热水器1包括壳体100、换热器200、燃烧器300和排烟管400。
壳体100的横截面大体为长方形且壳体100的横截面在左右方向上的长度大于前后方 向上的长度，所述排烟管的横截面大体为长方形且所述排烟管的横截面在左右方向上的长度大于前后方向上的长度(上下方向如图1-图5中的箭头A所示，左右方向如图1、图3-图5中的箭头C所示，前后方向如图2中的箭头B所示)。这样可以在保证排烟管400的风量和换热器200的容积的情况下，便于控制燃气热水器1在前后方向上的尺寸，从而进一步降低燃气热水器1占用的空间。
有利地，如图1-图5所示，燃气热水器1还包括分别与排烟口120和排烟管400相连的转接管410，排烟口120位于壳体100的顶壁上，燃烧器300位于换热器200上方，转接管410设在壳体100内且位于燃烧器300上方。这样可以便于排烟管400与排烟口120的连通，便于将烟气排出壳体100，而且可以便于将排烟口120邻近壳体100顶壁的中心处设置，便于在排烟口120上连接外部排烟管路。
具体而言，转接管410的横截面为圆形。
更为有利地，如图1-图5所示，转接管410上设有烟温传感器411。这样可以利用烟温传感器411检测经过转接管410的烟气的温度，以根据烟气温度调节燃烧器300的燃烧状态，从而可以便于避免有害气体的产生。
具体地，如图1-图5所示，壳体100在竖直方向上的长度小于800毫米，所述壳体在左右方向上的长度小于600毫米，所述壳体在前后方向上的长度小于400毫米。这样可以减小燃气热水器1占用的空间，便于燃气热水器1的安装，提高用户的接受度。
图1-图5示出了根据本发明一个具体示例的燃气热水器1。如图1-图5所示，燃气热水器1还包括用于收集换热器200产生的冷凝水的接水盒500，接水盒500位于换热器200下方且与所述烟气出口连通。具体而言，燃烧器300对换热器200的上部进行直接加热，燃烧产生的烟气在换热器200的下部进一步与换热器200进行换热，换热后烟气中的水蒸气发生冷凝后落入接水盒500内。这样可以便于对冷凝水进行收集，而且可以使燃烧器300燃烧产生的热量得到充分利用，从而提高燃气热水器1的加热效果，降低燃气热水器1的能耗。
具体而言，排烟管400可以连接在接水盒500的后表面上。
具体地，如图1所示，所述混合气进口上连接有混合器600，混合器600上设有与燃气进口150连通的燃气过口以及与所述空气进口连通的空气过口。具体而言，混合器600可以为文丘里混合器且位于燃烧器300上方。这样可以使燃气与空气先进入混合器600进行预混后再通过所述混合气进口进入燃烧器300，从而可以便于实现全预混燃烧，提高燃气热水器1的能效并降低排放。
更为具体地，如图1-图5所示，所述空气进口上连接有U型消音管610。这样可以降 低空气经过所述空气进口时产生的噪音，从而进一步提高用户使用时的舒适度。
图1-图7示出了根据本发明一些具体实施例的燃气热水器1。如图1-图7所示，燃气热水器1还包括循环管路700和循环水泵710。循环管路700分别与进水口210和出水口220连通。循环水泵710连接在循环管路700上。
通过设置循环管路700和循环水泵710，可以利用循环管路700连通换热器200的进水口210和出水口220，使换热器200内的水能够与循环管路700中的水进行循环交换。这样在用户停止使用热水后，通过启动循环水泵710驱动循环管路700中的水进行流动，促使循环管路700中的水与换热器200中的水进行循环，降低换热器200内的水温，避免过热的水留存在换热器200内导致换热器200内产生水垢，从而可以使换热器200不易结构。
并且，由于换热器200不易结构，可以使换热器200不易因结构而影响换热效果，从而可以延长换热器200的使用寿命。由于换热器200能够通过对存水进行循环降低换热器200内存水的温度，可以避免由于换热器200的容积增大使的存水降温缓慢而导致换热器200内结构的问题，从而可以便于扩大换热器200的容积，提高换热器200的换热效率。
此外，通过将循环水泵710连接在循环管路700上，可以使水流在用户正常使用热水使不会经过循环水泵710，以降低用户正常使用时的进水阻力，从而避免循环水泵710影响用户的用水时的出水流量，提高用户使用时的舒适性。
具体地，如图1-图7所示，燃气热水器1还包括进水管810和出水管820，进水管810分别与进水口210和冷水进口130相连，出水管820分别与出水口220和热水出口140相连，循环管路700分别与进水管810和出水管820相连，循环管路700与进水管810的连接节点位于进水口210和冷水进口130之间，循环管路700与出水管820的连接节点位于出水口220和热水出口140之间。这样可以实现循环管路700的连接，而且可以使水流循环时能够经过部分进水管810和部分出水管820，从而提高对换热器200的降温效果。
在本发明的一个具体实施例中，如图7所示，燃气热水器1还包括储水罐900，储水罐900连接在进水管810上且位于循环管路700与进水管810的连接节点以及进水口210之间。这样可以使储水罐900内的水参与到循环管路700中的水与换热器200中的水进行的循环中，使储水罐900中的水与换热器200中的水进行循环交换，从而进一步便于降低换热器200的温度，而且将储水罐900连接在进水管810上可以使进行循环时，储水罐900内留存的水为通过冷水进口130进入的冷水，从而可以降低储水罐900内的存水温度，在与换热器200中的水进行循环交换时，可以提高对换热器200的降温效果。
在本发明的另一个具体实施例中，如图6所示，燃气热水器1还包括储水罐900，储水罐900连接在出水管820上且位于循环管路700与出水管820的连接节点以及出水口220 之间。这样可以使储水罐900内的水参与到循环管路700中的水与换热器200中的水进行的循环中，使储水罐900中的水与换热器200中的水进行循环交换，从而进一步便于降低换热器200的温度，而且由于储水罐900连接在出水管820上，可以使通过出水管820流出的热水先通过储水罐900进行缓冲，避免热水出口140流出的水发生忽冷忽热的现象。
本领域的技术人员可以理解的是，进水管810和出水管820上可以均设有储水罐900。
具体而言，储水罐900的容积为1-2L。这样可以在保证对水的加热速度的情况下提高对换热器200的降温效果，
更为具体地，如图1所示，储水罐900和换热器200分别邻近壳体100相对的两侧壁设置。具体而言，储水罐900可以邻近壳体100的左上拐角处设置，换热器200可以位于储水罐900的右下方。这样可以为连接储水罐900和换热器200的管路留出足够的空间，以提高壳体100内空间的利用率，进一步便于控制壳体100的尺寸，降低燃气热水器1占用的空间。
有利地，如图1-图7所示，燃气热水器1还包括控制器1000和燃气比例阀1100，燃气比例阀1100与所述混合气进口连通，控制器1000分别与燃气比例阀1100和循环水泵710通讯且在燃气比例阀1100关闭后控制循环水泵710运行预定时间。这样可以利用控制器1000自动控制循环水泵710的启动，在用户停止用水后，燃气比例阀1100关闭，燃气停止进入燃烧器300，燃烧器300停止加热，同时控制器1000控制循环管路700运行，对水流进行循环，循环预定时间后停止，以节约能源。这样可以实现循环水泵710的自动控制。
具体而言，所述预定时间可以小于30秒。控制器1000可以与储水罐900前后并排设置。
更为有利地，如图1-图7所示，循环管路700上连接有循环通断阀720，循环通断阀720与控制器1000通讯且控制器1000在燃气比例阀1100关闭后控制循环通断阀720打开所述预定时间。这样可以在用户正常用水时关闭循环通断阀720，防止进水管810处的冷水进入出水管820内，并在用户用水结束后打开循环通断阀720，使换热器200处的水能够与循环管路700中的水进行循环交换。
可选地，如图6和图7所示，燃气热水器1还包括水流量传感器1200，水流量传感器1200连接在进水管810上且位于循环管路700与进水管810的连接节点与进水口210之间，水流量传感器1200与控制器1000通讯，控制器1000在水流量传感器1200检测到水流停止后控制燃气比例阀1100关闭。这样可以利用水流量传感器1200检测用户是否停止用水，从而自动控制燃气比例阀1100关闭，使燃气停止进入燃烧器300。并且由于水流量传感器 1200位于循环管路700与进水管810的连接节点与进水口210之间，可以在燃气比例阀1100关闭后检测进水管810内是否有水流动，以判断循环水泵710是否正常工作。
进一步地，燃气热水器1还包括水温检测装置(图中未示出)，所述水温检测装置与控制器1000通讯，所述水温检测装置设在出水管820或回水管2上。控制器1000在所述水温检测装置的检测值低于预定值时控制循环水泵710和循环通断阀720打开。这样可以在用户不使用热水时，在出水水温降低时，打开循环水泵710和循环通断阀720使管路和储水罐900内的水与换热器200中的水进行循环交换，从而对出水管820或回水管2中的水进行预热，缩短用户再次使用热水时的等待时间，提高用户使用时的舒适性。
具体而言，进水口210和出水口220可以位于换热器200的同一侧壁上。进水管810可以从换热器200的下方延伸至换热器200的左侧或右侧。
图1-图5示出了根据本发明一个具体示例的燃气热水器1。如图1-图5所示，循环管路700上设有用于连接回水管的回水管接头730。这样可以利用回水管接头730连接回水管2，以利用回水管2中的水与换热器200中的水进行循环交换。
具体地，如图1-图5所示，循环管路700位于换热器200的下方。这样可以进一步提高空间的利用率，降低壳体100的尺寸。
更为具体地，如图1-图5所示，冷水进口130、热水出口140和燃气进口150位于壳体100的底壁上。这样可以便于外部管路从下方与燃气热水器1相连。
具体而言，回水管接头730通过壳体100的底壁露出。换热器200可以为不锈钢件或铜件。
回水管接头730上可以连接有单向阀。这样可以防止冷水向热水端流动。
燃气进口150和所述燃气过口之间连接有燃气管路830，燃气比例阀1100连接在燃气管路830上且位于换热器200的左侧。燃气管路830从壳体100的底壁经过换热器200的侧部延伸至燃烧器300的上方。
下面参考附图描述根据本发明实施例的燃气热水器1的工作过程。
在用户正常使用热水时，若储水罐900设在出水管820上，如图3所示，循环通断阀720关闭，循环水泵710关闭，燃气比例阀1100打开，燃气通过燃气管路830进入混合器600，与通过U型消音管610进入混合器600的空气混合后进入燃烧器300进行燃烧以对换热器200进行加热。同时，水源处的水经过进水管810进入换热器200，受到燃烧器300加热后通过出水管820经过储水罐900进行缓冲后从热水出口140排出以供用户使用。
若储水罐900设在进水管810上，则水源处的水通过进水管810经过储水罐900后进入换热器200。
在用户停止使用热水时，如图4、图6和图7所示，冷水进口130和热水出口140处的水由于用户停止用水而停止流动，水流量传感器1200检测到进水管810内水流停止，控制器1000控制燃气比例阀1100关闭，并控制循环水泵710启动，循环通断阀720打开，换热器200内的高温存水与储水罐900内的水通过循环管路700进行循环交换，降低换热器200内部存水温度，从而降低高温水结垢几率。
其中，图4和图6示出了储水罐900设在出水管820上的实施例。图7示出了储水罐900设在进水管810上的实施例。
燃气热水器1还可以具有预热循环功能，当用户设置了预热循环功能时，控制器1000在所述水温检测装置的检测值小于预定值时控制循环水泵710和循环通断阀720打开，水在储水罐900与换热器200之间循环流动，直至所述水温检测装置的检测值大于达预定值时停止。由此可以保证储水罐900存水温度在用户设定值范围内，确保用户下次使用快速出热水。
当用户预铺了回水管2时，如图5所示，将回水管2分别连接在回水管接头730和热水出口140上。用户停止用水后，循环通断阀720关闭，循环水泵710启动，水在回水管2与换热器200之间循环流动。
在用户未设置预热循环功能时，循环水泵710在运行预定时间后停止。
在用户设置预热循环功能时，循环水泵710在所述温度检测装置的检测值达到预定值后停止。
这样可以使水温保持在设定的温度范围内，当用户打开水龙头时可以即开即得热水，有效减少了开机冷水的情况。
根据本发明实施例的燃气热水器1的其他构成以及操作对于本领域普通技术人员而言都是已知的，这里不再详细描述。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接或彼此可通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以 在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (19)

  1. 一种燃气热水器，其特征在于，包括：
    壳体，所述壳体包括适于安装在墙壁上的安装板，所述壳体上设有排烟口、冷水进口、热水出口、燃气进口和空气进口；
    换热器，所述换热器设在所述壳体内，所述换热器上设有与所述冷水进口连通的进水口、与所述热水出口连通的出水口、烟气进口和烟气出口；
    用于对所述换热器加热的燃烧器，所述燃烧器设在所述壳体内且与所述烟气进口连通，所述燃烧器上设有分别与所述燃气进口和所述空气进口连通的混合气进口；
    排烟管，所述排烟管分别与所述烟气出口和所述排烟口连通且至少一部分位于所述换热器和所述安装板之间。
  2. 根据权利要求1所述的燃气热水器，其特征在于，所述壳体的横截面大体为长方形且所述壳体的横截面在左右方向上的长度大于前后方向上的长度，所述排烟管的横截面大体为长方形且所述排烟管的横截面在左右方向上的长度大于前后方向上的长度。
  3. 根据权利要求1所述的燃气热水器，其特征在于，还包括分别与所述排烟口和所述排烟管相连的转接管，所述排烟口位于所述壳体的顶壁上，所述燃烧器位于所述换热器上方，所述转接管设在所述壳体内且位于所述燃烧器上方。
  4. 根据权利要求3所述的燃气热水器，其特征在于，所述转接管上设有烟温传感器。
  5. 根据权利要求1所述的燃气热水器，其特征在于，所述壳体在竖直方向上的长度小于800毫米，所述壳体在左右方向上的长度小于600毫米，所述壳体在前后方向上的长度小于400毫米。
  6. 根据权利要求1所述的燃气热水器，其特征在于，还包括用于收集所述换热器产生的冷凝水的接水盒，所述接水盒位于所述换热器下方且与所述烟气出口连通。
  7. 根据权利要求1所述的燃气热水器，其特征在于，所述混合气进口上连接有混合器，所述混合器上设有与所述燃气进口连通的燃气过口以及与所述空气进口连通的空气过口。
  8. 根据权利要求7所述的燃气热水器，其特征在于，所述空气进口上连接有U型消音管。
  9. 根据权利要求1所述的燃气热水器，其特征在于，还包括：
    循环管路，所述循环管路分别与所述进水口和所述出水口连通；
    循环水泵，所述循环水泵连接在所述循环管路上。
  10. 根据权利要求9所述的燃气热水器，其特征在于，还包括进水管和出水管，所述进水管分别与所述进水口和所述冷水进口相连，所述出水管分别与所述出水口和所述热水出口相连，所述循环管路分别与所述进水管和所述出水管相连，所述循环管路与所述进水管的连接节点位于所述进水口和所述冷水进口之间，所述循环管路与所述出水管的连接节点位于所述出水口和所述热水出口之间。
  11. 根据权利要求10所述的燃气热水器，其特征在于，还包括储水罐，所述储水罐连接在所述进水管上且位于所述循环管路与所述进水管的连接节点以及所述进水口之间。
  12. 根据权利要求10所述的燃气热水器，其特征在于，还包括储水罐，所述储水罐连接在所述出水管上且位于所述循环管路与所述出水管的连接节点以及所述出水口之间。
  13. 根据权利要求11或12所述的燃气热水器，其特征在于，所述储水罐和所述换热器分别邻近所述壳体相对的两侧壁设置。
  14. 根据权利要求10所述的燃气热水器，其特征在于，还包括控制器和燃气比例阀，所述燃气比例阀连接在所述混合器进口上，所述控制器分别与所述燃气比例阀和所述循环水泵通讯且在所述燃气比例阀关闭后控制所述循环水泵运行预定时间。
  15. 根据权利要求14所述的燃气热水器，其特征在于，所述循环管路上连接有循环通断阀，所述循环通断阀与所述控制器通讯。
  16. 根据权利要求14所述的燃气热水器，其特征在于，还包括水流量传感器，所述水流量传感器连接在所述进水管上且位于所述循环管路与所述进水管的连接节点与所述进水口之间，所述水流量传感器与所述控制器通讯。
  17. 根据权利要求9所述的燃气热水器，其特征在于，所述循环管路上设有用于连接回水管的回水管接头。
  18. 根据权利要求10所述的燃气热水器，其特征在于，所述循环管路位于所述换热器的下方。
  19. 根据权利要求1所述的燃气热水器，其特征在于，所述冷水进口、热水出口和燃气进口位于所述壳体的底壁上。
PCT/CN2017/082592 2016-07-28 2017-04-28 燃气热水器 Ceased WO2018018977A1 (zh)

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