CN210740723U - A condensing zero cold water gas water heater - Google Patents

Abstract

The utility model discloses a condensing type zero-cold water gas water heater, which comprises a casing, a combustion chamber, a heat exchanger, a smoke exhaust system and a circulating water pump installed in the casing; the casing is further provided with a water inlet, a water outlet and a drain The smoke outlet also includes a condensing heat exchanger, which is installed between the smoke exhaust system and the smoke outlet, the heat exchanger includes a coil heat exchange mechanism and a fin heat exchange mechanism, and the fins The heat exchange mechanism is arranged on the combustion chamber, the coil heat exchange mechanism is arranged outside the combustion chamber, and a water circuit is arranged in the outer casing, and the water circuit passes through the water inlet, the circulating water pump, the coil heat exchange mechanism, and the condensing heat exchanger in sequence. , Finned heat exchange mechanism and water outlet. By adding a condensing heat exchanger in the water heater, the utility model utilizes the condensing heat exchanger to recover the heat of the high-temperature exhaust gas after combustion, which improves the thermal efficiency of the water heater, saves the gas, reduces the discharge of the exhaust gas, and is more energy-saving and environmentally friendly.

Description

A condensing zero cold water gas water heater

technical field

The utility model relates to a water heater, in particular to a gas water heater.

Background technique

As people's pursuit of quality of life is getting higher and higher, "zero cold water" water heaters have become the common pursuit of most users. The so-called "zero cold water" refers to the technology that when the water heater is used, the cold water in the user's water circuit is drawn back into the water heater's internal circulation for heating, and then the heated hot water is released to prevent the user from first flowing out a large amount of cold water when the water heater is turned on. .

Existing zero-cold water gas water heaters generally require higher gas consumption than non-zero cold-water gas-fired water heaters due to the need to frequently heat and keep the water in the circulation pipeline, and the existing zero-cold-water gas water heaters basically have secondary energy efficiency and low thermal efficiency. , Long-term use will not only cause a lot of gas waste, but also increase exhaust emissions and pollute the environment.

Utility model content

The technical problem to be solved by the utility model is to provide a more energy-saving and environment-friendly zero-cold water gas water heater.

The solution of the utility model to the technical problem is as follows: a condensing type zero-cold water gas water heater, comprising a casing, a combustion chamber, a heat exchanger, a smoke exhaust system and a circulating water pump installed in the casing, and the casing is further provided with The water inlet, the water outlet and the smoke outlet also include a condensing heat exchanger, which is installed between the smoke exhaust system and the smoke outlet, and the heat exchanger includes a coil heat exchange mechanism and a fin exchange. Heat mechanism, the fin heat exchange mechanism is arranged on the combustion chamber, the coil heat exchange mechanism is arranged outside the combustion chamber, and a water circuit is arranged in the outer casing, and the water circuit passes through the water inlet, the circulating water pump, and the coil exchange in sequence. Heat mechanism, condensing heat exchanger, fin heat exchange mechanism and water outlet.

The beneficial effects of the utility model are: the utility model adds a condensing heat exchanger to the water heater, and utilizes the condensing heat exchanger to recover the heat of the high-temperature exhaust gas after combustion, thereby improving the thermal efficiency of the water heater, saving gas, and reducing the The emission of exhaust gas is more energy-saving and environmentally friendly.

As a further improvement of the above technical solution, the casing further includes a main controller, a sensor is also provided on the water inlet, and both the circulating water pump and the sensor are electrically connected to the main controller. The control of the water heater can be made more intelligent through the master controller.

As a further improvement of the above technical solution, a condensed water treatment box is also installed at the lower part of the casing, and the condensed water treatment box is communicated with the condensed heat exchanger through a condensed water pipe.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly describes the accompanying drawings that are used in the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present invention, but not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings according to these drawings without creative work.

Figure 1 is a schematic structural diagram of the present invention.

Detailed ways

The concept, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, those skilled in the art can obtain other embodiments without creative work, All belong to the scope of protection of the present invention. The preferred embodiments of the present utility model are shown in the accompanying drawings. The function of the accompanying drawings is to supplement the description of the text part of the specification with graphs, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model. , but it cannot be construed as a limitation on the protection scope of the present invention.

In the description of the present utility model, it should be understood that the orientation descriptions related to orientations, such as up, down, front, rear, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings, only It is for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including this number, above, below, within, etc. are understood as including this number. If it is described that the first and the second are only for the purpose of distinguishing technical features, it cannot be understood as indicating or implying relative importance, or indicating the number of the indicated technical features or the order of the indicated technical features. relation.

In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution . At the same time, various technical features in the present invention can be combined interactively on the premise of not contradicting each other.

Referring to FIG. 1, a condensing zero-cold water gas water heater includes a casing 1, a combustion chamber 2, a heat exchanger 3, a smoke exhaust system 4 and a circulating water pump 5 installed in the casing 1, and the casing 1 is also provided with an inlet The water outlet 11, the water outlet 12 and the smoke outlet 13 also include a condensing heat exchanger 6, which is installed between the smoke exhaust system 4 and the smoke outlet 13, and the heat exchanger 3 includes a coil. Heat exchange mechanism and fin heat exchange mechanism, the fin heat exchange mechanism is arranged on the combustion chamber 2, the coil heat exchange mechanism is arranged outside the combustion chamber 2, the casing 1 is provided with a waterway, the waterway It passes through the water inlet 11 , the circulating water pump 5 , the coil heat exchange mechanism, the condensing heat exchanger 6 , the fin heat exchange mechanism and the water outlet 12 in sequence. A condensed water treatment box 7 is also installed at the lower part of the casing 1 , and the condensed water treatment box 7 is communicated with the condensed water heat exchanger 6 through a condensed water pipe 8 . The casing 1 further includes a main controller 9 , and a sensor 10 is also provided on the water inlet. The circulating water pump 5 and the sensor 10 are both electrically connected to the main controller 9 .

When working, by feeding gas into the water heater, and then igniting the gas, the gas is burned in the combustion chamber to generate heat, and then the water flows through the heat exchanger and is heated, so that hot water is produced at the water outlet. The combustion chamber will generate a large amount of high-temperature exhaust gas during the combustion process, and the heat during the combustion process will heat the outer wall of the combustion chamber due to thermal radiation. Therefore, after entering the water heater, the cold water first passes through the coil heat exchanger for preliminary heating this time. The heat from the outer wall of the combustion chamber is recovered.

Then the water enters the condensing heat exchanger. After passing through the condensing heat exchanger, the water recovers the heat of the high-temperature exhaust gas. At the same time, because the cold water first passes through the coil heat exchanger, the temperature difference between the condensing heat exchanger and the water is reduced, thereby reducing condensation. production of water. Because the condensed water produced by the condensing heat exchanger is an acidic and harmful liquid, the condensed water will corrode the heat exchanger and cause damage to the environment. Therefore, smaller condensate production will be more environmentally friendly. At the same time, the recovered condensed water is neutralized and collected by the condensed water treatment box. It is convenient for the treatment of condensed water.

The hot water heated by the condensing heat exchanger is then heated by the fin heat exchange mechanism. Since the gas directly heats the fin heat exchange mechanism, the increase in water temperature is the most obvious in the process. water outlet. It can be seen from this that the cold water passes through the heat exchange mechanism for many times in the water heater, so that the heat of gas combustion can be more fully utilized.

When the user does not use hot water, the circulating water pump 5 circulates the cold water in the waterway, and then uses the water heater to heat this part of the water, so that the user can directly produce hot water when using the water heater, achieving zero cold water. Effect. Moreover, when the user is using normal water, because the circulating water pump is connected in series on the waterway, the circulating water pump can be used to increase the pressure of the user's water.

The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or variations without departing from the spirit of the present invention. Alternatives, these equivalent modifications or substitutions are all included within the scope defined by the claims of the present application.

Claims (3)

1. The utility model provides a zero cold water gas heater of condensing, includes the shell, installs combustion chamber, heat exchanger, the system of discharging fume and circulating water pump in the shell, still be equipped with water inlet, delivery port and exhaust port on the shell, its characterized in that: still include the condensation heat exchanger, the condensation heat exchanger is installed between system and the exhaust port of discharging fume, heat exchanger includes coil pipe heat transfer mechanism and fin heat transfer mechanism, fin heat transfer mechanism sets up on the combustion chamber, coil pipe heat transfer mechanism sets up outside the combustion chamber, be equipped with the water route in the shell, the water route is in proper order through water inlet, circulating water pump, coil pipe heat transfer mechanism, condensation heat exchanger, fin heat transfer mechanism and delivery port.

2. The condensing zero-cold water gas water heater of claim 1, wherein: still include main control unit in the shell, still establish the sensor on the water inlet, circulating water pump and sensor all are connected with main control unit electricity.

3. The condensing zero-cold water gas water heater of claim 1, wherein: and the lower part of the shell is also provided with a condensed water processing box, and the condensed water processing box is communicated with the condensing heat exchanger through a condensed water pipe.

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