CN214536877U

CN214536877U - Automatic overtemperature-preventing solar water heater

Info

Publication number: CN214536877U
Application number: CN202120785808.0U
Authority: CN
Inventors: 李�杰; 朱庆国
Original assignee: Jiangsu Gmo Hi Tech Co ltd
Current assignee: Jiangsu Gmo Hi Tech Co ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-10-29
Anticipated expiration: 2031-04-16

Abstract

The utility model relates to an automatic prevent overtemperature prote solar water heater belongs to water heater technical field. The water heater comprises a solar heat collector and a water tank positioned above the solar heat collector, wherein the solar heat collector consists of an upper communicating pipe, a lower communicating pipe and a group of heat collecting tubes arranged between the upper communicating pipe and the lower communicating pipe, and the upper communicating pipe end and the lower communicating pipe end respectively form a heat exchange loop with the water tank through a liquid outlet pipe and a return pipe; the inner side of the upper area of the water tank shell is provided with a radiator, the upper part of a heat exchange loop at the water tank is connected with one end of the radiator through a heat radiation outlet pipe and a temperature control valve, and the other end of the radiator is communicated with a return pipe through a heat radiation return pipe to form a heat radiation loop. When the stored water temperature in the water tank exceeds the set temperature of the temperature control valve, the valve opens a heat dissipation loop, and the over-temperature medium at the water tank enters the radiator, is returned after heat dissipation and returns to the solar thermal collector through a return pipe; thereby avoiding the water temperature from being overhigh and automatically realizing the overtemperature prevention function.

Description

Automatic overtemperature-preventing solar water heater

Technical Field

The utility model relates to a solar water heater, especially an automatic prevent solar water heater of overtemperature belongs to water heater technical field.

Background

When the illumination is strong in summer, the temperature of hot water provided by the solar water heater is often too high, and in order to avoid adverse consequences caused by the high temperature, the Chinese patent document with the application number of 201721642216.3 discloses a high-temperature fault-resistant solar water heating system, which comprises a solar heat collector, a heat storage water tank, a radiator, a temperature sensor, a controller, a circulating pump and a three-way valve; the three-way valve is provided with a first valve port, a second valve port and a third valve port, the first valve port is communicated with a water outlet of the solar heat collector through a first pipeline, the second valve port is communicated with a first circulating water port of the heat storage water tank through a second pipeline, and the third valve port is communicated with a water inlet of the radiator through a third pipeline; the temperature sensor is used for detecting the water temperature in the heat storage water tank, and the controller is respectively connected with the temperature sensor, the three-way valve and the circulating pump electrically. The hot water in the heat storage water tank enters the radiator through the second pipeline and the third pipeline to be cooled, the controller is prevented from being cut off due to high-temperature faults, and therefore normal hot water of a user is prevented from being influenced, and the heat storage water tank is convenient for the user to use. The essence is that when the water in the water tank is over-temperature through monitoring, the high-temperature water in the water tank is pumped to the radiator for heat dissipation by the aid of the circulating pump. The technical scheme has the problems that an electronic controller is required to monitor the water temperature and output a control signal, and once the controller fails, the high-temperature prevention function is lost; and secondly, circulating pumps and other parts are needed, so that the cost and the failure rate are high.

Further, chinese patent application No. 201210295669.9 discloses a scale prevention apparatus for a solar water heater, the scale prevention apparatus including: and the radiator is connected with the water tank and used for radiating the water in the water tank. The radiator has a radiator passage through which water passes, the radiator passage being in fluid communication with the water tank. The radiator channel and the water tank form a loop of water circulation. The water in the radiator is cooled by the heat dissipated, and then flows downwards to be injected into the lower end of the water tank, and the hot water in the upper end of the water tank automatically enters the upper end of the radiator to be continuously cooled because the water in the radiator flows downwards, so that a water flow circulation is formed between the radiator and the water tank. Not only reduces the temperature of the water in the water tank, but also enables the water to be in a flowing state, and prevents the formation of scale. Although the technical scheme also has a certain high-temperature prevention function, the technical scheme has the problems that the external radiator is an external radiator, corresponding weather-resistant treatment is required, the cost is high, and the integrity of the system is influenced; secondly, its temperature-sensing valve sets up in the low temperature side, and when the temperature that the water tank obtained was not high, the water of storage also can dispel the heat to the air through metal pipeline such as radiator, influences the effective gain of heat of entire system.

Disclosure of Invention

The utility model aims to provide an automatic anti-overtemperature solar water heater which does not need electronic monitoring, is stable and reliable and has economical cost aiming at the problems in the prior art.

In order to achieve the above purpose, the utility model discloses automatic prevent overtemperature solar water heater's basic technical scheme does: the solar heat collector comprises a solar heat collector and a water tank positioned above the solar heat collector, wherein the solar heat collector consists of an upper horizontal communicating pipe, a lower horizontal communicating pipe and a group of heat collecting tubes arranged between the upper horizontal communicating pipe and the lower horizontal communicating pipe, and the upper horizontal communicating pipe end and the lower horizontal communicating pipe end form a heat exchange loop with the water tank through a liquid outlet pipe and a return pipe respectively; the heat exchange device is characterized in that a radiator is arranged on the inner side of the upper area of the shell of the water tank, the upper part of a heat exchange loop at the water tank is connected with one end of the radiator through a heat radiation outlet pipe and a temperature control valve, and the other end of the radiator is communicated with a return pipe through a heat radiation return pipe to form a heat radiation loop.

Under normal conditions, the solar heat collector and the water tank circularly heat the stored water in the water tank through the heat exchange loop. When the stored water temperature in the water tank exceeds the set temperature of the temperature control valve, the valve opens a heat dissipation loop, and the over-temperature medium at the water tank enters the radiator, is returned after heat dissipation and returns to the solar thermal collector through a return pipe; thereby avoiding the water temperature from being overhigh and automatically realizing the overtemperature prevention function.

After the utility model is adopted, the structure is simple, the reliability is high, and the cost is economical due to the help of the mechanical temperature control valve; the radiator is arranged in the water tank shell, and weather-proof treatment is not needed; in addition, the temperature control valve is arranged at a high position, and the temperature control valve is opened for heat dissipation when the temperature is over-high, so that the normal heat gain of the whole solar heat exchange loop is not influenced.

The utility model has the further perfection that the inner container of the water tank is surrounded with a heat exchange jacket, the upper communicating pipe is connected with one end of the lower part of the heat exchange jacket through a liquid outlet pipe, and the other end of the lower part of the heat exchange jacket is communicated with the lower communicating pipe through a return pipe to form an indirect heat exchange loop; the upper part of the heat exchange jacket is connected with one end of the radiator through a heat radiation outlet pipe and a temperature control valve.

The utility model is further perfected in that the upper communicating pipe is directly connected with one end of the lower part of the inner container of the water tank through the liquid outlet pipe, and the other end of the lower part of the inner container is communicated with the lower communicating pipe through the return pipe to form a direct heat exchange loop; the upper part of the inner container is connected with one end of the radiator through a radiating outlet pipe and a temperature control valve.

The utility model discloses a further perfection is again, the safety relief valve is still equipped with to the heat dissipation exit tube.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic sectional structure view of fig. 1.

Fig. 3 is a schematic sectional structure diagram of a second embodiment of the present invention.

Detailed Description

Example one

As shown in fig. 1 and 2, the automatic overtemperature prevention solar water heater of the embodiment comprises a solar heat collector 1 consisting of an upper horizontal communicating pipe 1-1, a lower horizontal communicating pipe 1-2 and a group of heat collecting tubes 1-3 arranged between the upper horizontal communicating pipe and the lower horizontal communicating pipe, and is arranged on a roof surface W. The solar water heater is characterized in that an inner container 2-7 with a hot water outlet 2-1 and a cold water inlet 2-2 is arranged above the solar heat collector 1, the inner container 2-7 is surrounded by a heat exchange jacket 2-4 and is wrapped by an insulating layer 2-3 filled in the shell to form a water tank 2.

The heat exchange medium in the solar heat collector 1 is connected with the right end of the lower part of the heat exchange jacket 2-4 through the liquid outlet pipe 1-4 by the right end of the upper communicating pipe 1-1, and the left end of the lower part of the heat exchange jacket 2-4 is communicated with the left end of the lower communicating pipe 1-2 through the return pipe 1-5, so that an indirect heat exchange loop of the solar heat collector 1 and the water tank 2 is formed. The inner side of the upper area of the outer shell of the water tank 2 is provided with a radiator 3, the upper part of a heat exchange jacket 2-4 of a water tank inner container 2-7 is connected with one end of the radiator 3 through a heat radiation outlet pipe 2-5 by a temperature control valve 4, and the other end of the radiator 3 is communicated with a return pipe 1-5 through a heat radiation return pipe 2-6, thereby forming a heat radiation loop. In addition, the heat radiation outlet pipe 2-5 is also provided with a safety pressure relief valve 5.

When the solar water heater operates, the solar heat collector and the water tank indirectly circulate and heat the stored water in the water tank through the heat exchange loop of the heat exchange jacket outside the water tank. When the stored water temperature does not exceed the set temperature of the temperature control valve, the temperature control valve closes the heat conduction and dissipation loop; once the temperature exceeds the set temperature, the temperature control valve automatically opens a heat dissipation loop, and the overtemperature heat exchange medium at the heat exchange jacket of the water tank enters the radiator, returns after heat dissipation and returns to the solar heat collector through the return pipe, so that the automatic overtemperature prevention function is realized.

Example two

The automatic overtemperature prevention solar water heater of the embodiment is shown in fig. 3, and the basic structure is the same as that of the first embodiment. The difference is that a direct heat exchange mode is adopted, namely water which is led to the inner container of the water tank is used as a heat exchange medium, so that the water in the solar heat collector 1 is directly connected with the right end of the lower part of the inner container 2-7 through the right end of the upper communicating pipe 1-1 through the liquid outlet pipe 1-4, and the left end of the lower part of the inner container 2-7 is communicated with the left end of the lower communicating pipe 1-2 through the return pipe 1-5, thereby forming a direct heat exchange loop of the solar heat collector 1 and the water tank 2. And the upper part of the water tank inner container 2-7 is connected with one end of a radiator 3 through a heat radiation outlet pipe 2-5 and a temperature control valve 4, and the other end of the radiator 3 is communicated with a return pipe 1-5 through a heat radiation return pipe 2-6, thereby forming a heat radiation loop.

In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.

Claims

1. An automatic overtemperature-preventing solar water heater comprises a solar heat collector and a water tank positioned above the solar heat collector, wherein the solar heat collector consists of an upper horizontal communicating pipe, a lower horizontal communicating pipe and a group of heat collecting tubes arranged between the upper horizontal communicating pipe and the lower horizontal communicating pipe, and the upper communicating pipe end and the lower communicating pipe end form a heat exchange loop with the water tank through a liquid outlet pipe and a return pipe respectively; the method is characterized in that: the heat exchange device is characterized in that a radiator is arranged on the inner side of the upper area of the shell of the water tank, the upper part of a heat exchange loop at the water tank is connected with one end of the radiator through a heat radiation outlet pipe and a temperature control valve, and the other end of the radiator is communicated with a return pipe through a heat radiation return pipe to form a heat radiation loop.

2. The automatic anti-overtemperature solar water heater according to claim 1, characterized in that: a heat exchange jacket is surrounded by the inner container of the water tank, the upper communicating pipe is connected with one end of the lower part of the heat exchange jacket through a liquid outlet pipe, and the other end of the lower part of the heat exchange jacket is communicated with the lower communicating pipe through a return pipe to form an indirect heat exchange loop; the upper part of the heat exchange jacket is connected with one end of the radiator through a heat radiation outlet pipe and a temperature control valve.

3. The automatic anti-overtemperature solar water heater according to claim 1, characterized in that: the upper communicating pipe is directly connected with one end of the lower part of the inner container of the water tank through the liquid outlet pipe, and the other end of the lower part of the inner container is communicated with the lower communicating pipe through the return pipe to form a direct heat exchange loop; the upper part of the inner container is connected with one end of the radiator through a radiating outlet pipe and a temperature control valve.

4. The automatic anti-overtemperature solar water heater according to claim 2 or 3, characterized in that: and the heat radiation outlet pipe is also provided with a safety relief valve.