CN209801758U - anti-freezing gas water heater - Google Patents
anti-freezing gas water heater Download PDFInfo
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- CN209801758U CN209801758U CN201920005719.2U CN201920005719U CN209801758U CN 209801758 U CN209801758 U CN 209801758U CN 201920005719 U CN201920005719 U CN 201920005719U CN 209801758 U CN209801758 U CN 209801758U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 416
- 238000007710 freezing Methods 0.000 title claims description 29
- 108010053481 Antifreeze Proteins Proteins 0.000 claims 2
- 230000002528 anti-freeze Effects 0.000 claims 2
- 208000001034 Frostbite Diseases 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000008400 supply water Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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Abstract
The utility model discloses a gas heater prevents frostbite, including heat exchanger, inlet tube and outlet pipe, heat exchanger respectively with the inlet tube with go out water piping connection, outside cold water warp the inlet tube enters into heat exchanger heats the back warp the outlet pipe is toward flowing out outward, through be provided with first temperature-sensing valve and second temperature-sensing valve respectively on heat exchanger's inlet tube and outlet pipe for whether open or close corresponding pipeline with the decision with the surplus water of inlet tube, outlet pipe and heat exchanger toward discharging outward according to intraductal temperature, its surplus water in can automatic evacuation gas heater and the pipeline fast, avoids the water pipe frost crack in order to reach the mesh of preventing frostbite.
Description
Technical Field
The utility model relates to a kitchen electricity technical field especially relates to a gas heater prevents frostbite.
background
The gas water heater has become an indispensable kitchen life electrical appliance of modern families, and provides a water heater required by life for people. However, in winter, especially in most northern areas, winter temperatures are generally below 0 ℃. When the gas water heater is in a non-working state and the waterway system is full of cold water, the whole gas water heater is arranged outside a balcony or external cold air flows through the smoke exhaust pipe to form backflow, so that the internal temperature of the water heater suddenly drops, the pipeline freezes and expands, the pipeline is very easy to freeze and leak, and economic loss of users is caused.
In the related art, there are two common anti-freezing measures adopted by gas water heaters:
One is to adopt the manual form of draining, when gas heater does not use, opens water inlet and delivery port through the manual work, discharges the water storage in the heat exchanger among the gas heater toward outside totally, but this kind of mode is more troublesome, if the user too late to drain or forget under the condition of draining, also can cause because of the temperature reduction leads to the condition that the heat exchanger water pipe frost crack leaks.
Secondly, an electric heating component is adopted, the temperature of the water path is detected through a temperature controller, when the temperature is lower than the temperature of a closing point, the heating component carries out comprehensive and rapid heating on the water path system, the method has a good anti-freezing effect, and is a mainstream anti-freezing measure in the current stage, but the measure is an energy consumption measure, and a large amount of electric energy needs to be wasted in the repeated heating process.
Disclosure of Invention
The utility model discloses aim at solving one of the problems that exist among the prior art to a certain extent at least, for this reason, the utility model provides an anti-freezing gas water heater, its simple structure can be fast the surplus water in the automatic evacuation gas water heater pipeline, avoids the water pipe frost crack in order to reach the purpose of preventing frostbite.
The above purpose is realized by the following technical scheme:
An anti-freezing gas water heater comprises a heat exchanger, a water inlet pipe, a water outlet pipe, a first temperature control valve, a second temperature control valve, a first water outlet pipe and a second water outlet pipe, wherein the heat exchanger is respectively connected with the water inlet pipe and the water outlet pipe, external cold water enters the heat exchanger through the water inlet pipe to be heated and then flows out through the water outlet pipe;
The second temperature control valve is arranged between the heat exchanger and the water outlet pipe, and is at least provided with a second water inlet valve port, a second water outlet valve port and a second water discharge valve port, wherein the second water inlet valve port is connected with the heat exchanger, the second water outlet valve port is connected with the water outlet pipe, and the second water discharge valve port is connected with the second water discharge pipe.
In some embodiments, the first thermostat valve has a first reversing temperature, when the temperature of water flowing into the first thermostat valve is higher than the first reversing temperature, a channel in the first thermostat valve for connecting the first water inlet port and the first water outlet port is communicated, and a channel in the first thermostat valve for connecting the first water outlet port and the first water outlet port is blocked;
When the temperature of water flowing into the first temperature control valve is lower than the first reversing temperature, a channel in the first temperature control valve for connecting the first drain valve port and the first outlet valve port is communicated, and a channel in the first temperature control valve for connecting the first inlet valve port and the first outlet valve port is cut off.
in some embodiments, the second thermostat valve has a second reversing temperature, when the temperature of water flowing into the second thermostat valve is higher than the second reversing temperature, a channel in the second thermostat valve for connecting the second water inlet port and the second water outlet port is communicated, and a channel in the second thermostat valve for connecting the second water inlet port and the second water outlet port is blocked;
When the temperature of water flowing into the second thermostat valve is lower than the second reversing temperature, a channel in the second thermostat valve for connecting the second water inlet valve port and the second water outlet valve port is communicated, and a channel in the second thermostat valve for connecting the second water inlet valve port and the second water outlet valve port is cut off.
In some embodiments, a pressure accumulator is disposed between the first temperature control valve and the heat exchanger.
in some embodiments, the pressure storage tank is located at a higher position than the heat exchanger.
in some embodiments, the pressure storage tank has a water inlet at the top of the pressure storage tank and connected to the first outlet port of the first thermostatic valve, and a water outlet at the bottom of the pressure storage tank and connected to the heat exchanger.
in some embodiments, the first temperature control valve and the second temperature control valve are both mechanical temperature control three-way valves.
Compared with the prior art, the utility model, following effect has at least:
1. The utility model discloses a gas heater prevents frostbite, its simple structure, the surplus water in automatic evacuation gas heater and the pipeline fast avoids the water pipe frost crack in order to reach frostproofing purpose.
2. The operation is simple, the environment is protected, energy is saved, and the use experience of a user is further improved.
other advantageous results of the invention will be described in the detailed description with reference to the drawings.
Drawings
Fig. 1 is a schematic structural diagram of an anti-freezing gas water heater according to a first embodiment of the present invention;
Fig. 2 is a schematic structural diagram of an anti-freezing gas water heater according to a second embodiment of the present invention;
Fig. 3 is a flowchart of a control method of an anti-freezing gas water heater according to a third embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The first embodiment is as follows: as shown in fig. 1, the embodiment provides an anti-freezing gas water heater, which includes a heat exchanger 1, a water inlet pipe 2 and a water outlet pipe 3, wherein the heat exchanger 1 is respectively connected to the water inlet pipe 2 and the water outlet pipe 3, external cold water enters the heat exchanger 1 through the water inlet pipe 2 to be heated and then flows out through the water outlet pipe 3, the anti-freezing gas water heater further includes a first temperature control valve 4, a second temperature control valve 5, a first water outlet pipe 6 and a second water outlet pipe 7, the first temperature control valve 4 is disposed between the water inlet pipe 2 and the heat exchanger 1, the first temperature control valve 4 at least includes a first water inlet valve port 41, a first water outlet valve port 42 and a first water outlet valve port 43, wherein the first water inlet valve port 41 is connected to the water inlet pipe 2, the first water outlet valve port 42 is connected to the heat exchanger 1; the second temperature control valve 5 is arranged between the heat exchanger 1 and the water outlet pipe 3, the second temperature control valve 5 at least has a second water inlet valve port 51, a second water outlet valve port 52 and a second water outlet valve port 53, wherein the second water inlet valve port 51 is connected with the heat exchanger 1, the second water outlet valve port 52 is connected with the water outlet pipe 3, and the second water outlet valve port 53 is connected with the second water outlet pipe 7.
The anti-freezing gas water heater of the embodiment comprises a heat exchanger 1, a water inlet pipe 2, a water outlet pipe 3, a first temperature control valve 4, a second temperature control valve 5, a first water outlet pipe 6 and a second water outlet pipe 7, wherein the heat exchanger 1 is respectively connected with the water inlet pipe 2 and the water outlet pipe 3, external cold water enters the heat exchanger 1 through the water inlet pipe 2 to be heated and then flows out through the water outlet pipe 3 to provide hot water for a user side, the first temperature control valve 4 is arranged at the water inlet end of the heat exchanger 1 and between the water inlet pipe 2 and the heat exchanger 1, the second temperature control valve 5 is arranged at the water outlet end of the heat exchanger 1 and between the heat exchanger 1 and the water outlet pipe 3, a water path system of the hot water heater is formed by respectively arranging the first temperature control valve 4 and the second temperature control valve 5 on the water inlet pipe 2 and the water outlet pipe 3 of the heat exchanger 1, the first, A first water outlet valve port 42 and a first water outlet valve port 43, wherein the first water inlet valve port 41 is connected with the water inlet pipe 2 to introduce external cold water into the first temperature control valve 4, the first water outlet valve port 42 is connected with the heat exchanger 1 to provide cold water for the heat exchanger 1, and the first water outlet valve port 43 is connected with the first water outlet pipe 6 to discharge residual water in the water inlet pipe 2; the second temperature control valve 5 is a three-way valve having a second water inlet valve port 51, a second water outlet valve port 52 and a second water outlet valve port 53, wherein the second water inlet valve port 51 is connected to the heat exchanger 1 to introduce the water heated by the heat exchanger 1 into the second temperature control valve 5, the second water outlet valve port 52 is connected to the water outlet pipe 3 to provide hot water for the user, and the second water outlet valve port 53 is connected to the second water outlet pipe 7 to discharge the residual water in the water outlet pipe 3. The water-saving device is simple in structure, and can quickly and automatically empty residual water in a gas water heater and a pipeline by respectively arranging the first temperature control valve 4 and the second temperature control valve 5 on the water inlet pipe 2 and the water outlet pipe 3 of the heat exchanger 1, so that the aim of preventing freezing of the water pipe is fulfilled.
Further, the first temperature control valve 4 has a first reversing temperature, when the temperature of the water flowing into the first temperature control valve 4 is higher than the first reversing temperature, a channel in the first temperature control valve 4 for connecting the first water inlet valve port 41 and the first water outlet valve port 42 is communicated, and a channel in the first temperature control valve 4 for connecting the first water outlet valve port 43 and the first water outlet valve port 42 is cut off; when the temperature of the water flowing into the first temperature control valve 4 is lower than the first reversing temperature, the channel inside the first temperature control valve 4 for connecting the first drain valve port 43 and the first outlet valve port 42 is communicated, and the channel inside the first temperature control valve 4 for connecting the first inlet valve port 41 and the first outlet valve port 42 is cut off, so that the structure is simple, and the assembly cost of the product is reduced.
in the present embodiment, the first temperature control valve 4 has a preset first reversing temperature, and the first reversing temperature is preferably preset to 4 ℃, but is not limited to 4 ℃, and may also be preset to other more suitable temperatures according to actual requirements. When the actual water temperature flowing into the first temperature control valve 4 is higher than the first reversing temperature, the first water inlet valve port 41 and the first water outlet valve port 42 are opened to connect the first water inlet valve port 41 and the first water outlet valve port 42 in the first temperature control valve 4, and the first water outlet valve port 43 is closed to cut off the channel between the heat exchanger 1 and the first water outlet pipe 6, so that the external cold water is supplied into the heat exchanger 1 through the first temperature control valve 4 after entering from the water inlet pipe 2, when the actual water temperature flowing into the first temperature control valve 4 and the external actual temperature are both lower than the first reversing temperature, the first water inlet valve port 41 and the first water outlet valve port 43 are opened to connect the channel between the first water inlet valve port 41 and the first water outlet valve port 43 in the first temperature control valve 4, and the first water outlet valve port 42 is closed to connect the channel between the first water inlet valve port 41 and the first water outlet valve port 42 in the first temperature control valve 4, thereby allowing the interior of the heat exchanger 1 to communicate with the outside through the first drain pipe 6.
Specifically, the second temperature control valve 5 has a second reversing temperature, when the temperature of the water flowing into the second temperature control valve 5 is higher than the second reversing temperature, a channel in the second temperature control valve 5 for connecting the second water inlet valve port 51 and the second water outlet valve port 52 is communicated, and a channel in the second temperature control valve 5 for connecting the second water inlet valve port 51 and the second water discharge valve port 53 is cut off; when the temperature of water flowing into the second temperature control valve 5 is lower than the second reversing temperature, the channel inside the second temperature control valve 5 for connecting the second water inlet valve port 51 and the second water outlet valve port 53 is communicated, and the channel inside the second temperature control valve 5 for connecting the second water inlet valve port 51 and the second water outlet valve port 52 is cut off, so that the structure is simple, the assembly cost of the product is reduced, and the residual water in the heat exchanger 1 and the water outlet pipe 3 can be effectively discharged outwards.
in the present embodiment, the second temperature control valve 5 has a second reversing temperature, which is preferably preset to 4 ℃, but not limited to 4 ℃, and can also be preset to other more suitable temperatures according to actual requirements. When the actual water temperature flowing into the second temperature control valve 5 is higher than the second reversing temperature, the second water inlet valve port 51 and the second water outlet valve port 52 are opened to conduct a channel in the second temperature control valve 5 for connecting the second water inlet valve port 51 and the second water outlet valve port 52, and the second water discharge valve port 53 is closed to cut off the channel in the second temperature control valve 5 for connecting the second water inlet valve port 51 and the second water discharge valve port 53, so that the water heated by the heat exchanger 1 is output to a user end through the water outlet pipe 3; when both the actual temperature of the water flowing into the second temperature control valve 5 and the actual temperature of the outside are lower than the second switching temperature, the second water inlet valve port 51 and the second water outlet valve port 53 are opened to conduct a channel inside the second thermostatic valve 5 for connecting the second water inlet valve port 51 and the second water outlet valve port 53, and the second water outlet valve port 52 is closed to cut off the passage inside the second temperature control valve 5 for connecting the second water inlet valve port 51 and the second water outlet valve port 52, since the actual water temperature flowing into the first temperature control valve 4 and the actual temperature of the outside are also lower than the first switching temperature, the first temperature control valve 4 opens a passage between the first water inlet port 41 and the first drain port 43 so that the inside of the heat exchanger 1 communicates with the outside through the first drain pipe 6, thereby opening a passage between the first drain pipe 6 and the second drain pipe 7, and then the residual water in the heat exchanger 1 and the water outlet pipe 3 is discharged out through the second water discharge pipe 7 under the action of air pressure.
Preferably, a pressure water storage tank 8 is arranged between the first temperature control valve 4 and the heat exchanger 1, and the design is reasonable, so that the effect of discharging residual water in the heat exchanger 1 outwards can be enhanced.
further, the position of the pressure water storage tank 8 is higher than that of the heat exchanger 1, so that the pressure in the pipeline can be further enhanced to discharge the residual water in the pipeline to the outside more quickly.
Specifically, the pressure water storage tank 8 has a water inlet 81 and a water outlet 82, wherein the water inlet 81 is located at the top of the pressure water storage tank 8 and connected to the first water outlet valve port 41, and the water outlet 82 is located at the bottom of the pressure water storage tank 8 and connected to the heat exchanger 1, and the structure is simple, so that the water stored in the pressure water storage tank 8 can be effectively discharged.
In this embodiment, a pressure water storage tank 8 is disposed between the first temperature control valve 4 and the heat exchanger 1, the pressure water storage tank 8 is installed at a position higher than that of the heat exchanger 1 for storing a certain amount of water, when the actual temperature of water flowing into the first temperature control valve 4 and the actual temperature of the outside are both lower than a first reversing temperature and the actual temperature of water flowing into the second temperature control valve 5 and the actual temperature of the outside are also lower than a second reversing temperature, the first temperature control valve 4 opens a passage between the first water inlet valve port 41 and the first drain valve port 43 to communicate the inside of the heat exchanger 1 with the outside through the first drain pipe 6, the second temperature control valve 5 opens a passage between the second water inlet valve port 51 and the second drain valve port 53 to open a passage between the first drain pipe 6 and the second drain pipe 7, and since the water level in the pressure water storage tank 8 is higher than the water level at the outlet of the second drain pipe 7, the other end of the second water discharge pipe 7 is communicated with the outside, and under the action of water gravity and air pressure in the pressure water storage tank 8, residual water in the pressure water storage tank 8, the heat exchanger 1 and the water outlet pipe 3 is discharged outwards through the first water discharge pipe 6 until the residual water in the pressure water storage tank 8, the heat exchanger 1 and the water outlet pipe 3 is discharged completely. After the user uses the gas water heater again, when the actual water temperature flowing into the second temperature control valve 5 is higher than the second reversing temperature, the first temperature control valve 4 opens the channel between the first water inlet valve port 41 and the first water outlet valve port 42 to supply water into the heat exchanger 1, the second temperature control valve 5 opens the channel between the second water inlet valve port 51 and the second water outlet valve port 52, the channel inside the second temperature control valve 5 for connecting the second water inlet valve port 51 and the second water discharge valve port 53 is cut off, and then external cold water enters the heat exchanger 1 through the water inlet pipe 2 to be heated and then flows out through the water outlet pipe 3, and the pressure water storage tank 8 is replenished with full water again.
Preferably, the first temperature control valve 4 and the second temperature control valve 5 both adopt a mechanical temperature control three-way valve, so that the assembly cost is low, and the competitiveness of the product is enhanced.
In this embodiment, the first temperature control valve 4 and the second temperature control valve 5 both use a mechanical three-way temperature control valve, which is a three-way temperature control valve that can adjust the opening of the valve according to the temperature change of the liquid in a physical mechanical manner, and at a specific temperature, the three-way temperature control valve can be opened and closed, and when one of the two channels is in an open state, the other channel is in a closed state.
Example two: as shown in fig. 2, the present embodiment provides an anti-freezing gas water heater, which is the same as the first embodiment, and specifically, a first temperature control valve and a second temperature control valve are respectively disposed on a water inlet pipe 2 and a water outlet pipe 3 of a heat exchanger 1 to open or close corresponding pipelines according to the temperature of water in the pipes to determine whether to discharge residual water in the water inlet pipe, the water outlet pipe and the heat exchanger to the outside, so that residual water in the gas water heater and the pipelines can be quickly and automatically emptied, and the freezing crack of the water pipe is avoided to achieve the anti-freezing purpose.
In the present embodiment, specifically, different from the first embodiment, the pressure water storage tank 8 of the gas water heater as described above is installed at a position between the second temperature control valve 5 and the heat exchanger 1, and the position where the pressure water storage tank 8 is installed is higher than the position where the heat exchanger 1 is installed for storing a certain amount of water.
After the gas water heater stops heating, when the actual water temperature flowing into the second temperature control valve 5 and the actual temperature of the outside are both lower than the second reversing temperature, the second temperature control valve 5 opens the channel between the second water inlet valve port 51 and the second water discharge valve port 53 and closes the channel between the second water outlet valve port 52 and the second water inlet valve port 51 so as to communicate the inside of the heat exchanger 1 with the outside through the second water discharge pipe 7; when the actual water temperature flowing into the first temperature control valve 4 and the actual temperature outside are lower than the first reversing temperature, the first temperature control valve 4 opens the channel between the first water outlet valve port 42 and the first water outlet valve port 43 and closes the channel between the first water outlet valve port 42 and the first water inlet valve port 41, so as to open the channel between the first water outlet pipe 6 and the second water outlet pipe 7, and the second temperature control valve 5 opens the channel between the second water inlet valve port 51 and the second water outlet valve port 53, so that the inside of the heat exchanger 1 is communicated with the outside through the second water outlet pipe 7, and further, under the action of the water gravity and the air pressure in the pressure water storage tank 8, the residual water in the heat exchanger 1 and the water inlet pipe 2 is discharged outside through the first water outlet pipe 6 until the residual water in the pressure water storage tank 8, the heat exchanger 1 and the water inlet pipe 2 is completely discharged.
When the actual water temperature flowing into the first temperature control valve 4 and the second temperature control valve 5 is higher than the first reversing temperature and the second reversing temperature respectively, the first temperature control valve 4 opens the channel between the first water inlet valve port 41 and the first water outlet valve port 42 and closes the channel between the first water outlet valve port 42 and the first water outlet valve port 43 to supply water to the heat exchanger 1; the second temperature control valve 5 opens the passage between the second water outlet port 52 and the second water inlet port 51 and closes the passage between the second water inlet port 51 and the second water outlet port 53 to allow the user to output hot water, thereby closing the passage between the first water discharge pipe 6 and the second water discharge pipe 7.
Example three: as shown in fig. 3, the present embodiment provides a control method of an anti-freezing gas water heater, which is applied to the gas water heater described above, and the control method of the anti-freezing gas water heater includes the following steps:
s101, when the heat exchanger stops heating, the first temperature control valve senses the water temperature flowing into the first temperature control valve, and meanwhile, the second temperature control valve senses the water temperature flowing into the second temperature control valve;
S102, judging whether the water temperature flowing into the first temperature control valve and the water temperature flowing into the second temperature control valve are lower than a first reversing temperature and a second reversing temperature respectively;
when the water temperature flowing into the first temperature control valve and the water temperature flowing into the second temperature control valve are respectively higher than the first reversing temperature and the second reversing temperature, the first temperature control valve opens the first water inlet valve port and closes the first water outlet valve port to conduct a channel between the first water inlet valve port and the first water outlet valve port, meanwhile, the second temperature control valve opens the second water outlet valve port and closes the second water outlet valve port to conduct a channel between the second water inlet valve port and the second water outlet valve port, so that the channel between the first water outlet pipe and the second water outlet pipe is closed, and then the step S101 is returned to continuously sense the water temperature;
When the water temperature in the first temperature control valve and the water temperature in the second temperature control valve are respectively lower than the first reversing temperature and the second reversing temperature, the first temperature control valve opens the first water inlet valve port and the first water outlet valve port and closes the first water outlet valve port, thereby communicating the channel between the first water inlet valve port and the first water outlet valve port to communicate the inside of the heat exchanger with the outside through the first water outlet pipe, meanwhile, the second temperature control valve opens the second water inlet valve port and the second water discharge valve port and closes the second water outlet valve port, so as to open a channel between the first water discharge pipe and the second water discharge pipe, under the action of the gravity and the air pressure of the water in the pressure water storage tank, the residual water in the pressure water storage tank, the heat exchanger and the water outlet pipe is discharged outside through the second water discharge pipe, therefore, residual water in the pipeline of the gas water heater is quickly drained, the freezing and cracking of the water pipe are avoided to achieve the anti-freezing purpose, and the gas water heater can be normally used under the condition of low temperature.
Specifically, when the heat exchanger is used for heating, the first temperature control valve and the second temperature control valve sense the water temperature in the pipe, when the water temperature flowing into the first temperature control valve and the water temperature flowing into the second temperature control valve are respectively higher than a first reversing temperature and a second reversing temperature, the first temperature control valve opens the first water inlet valve port and closes the first water outlet valve port, then the channel between the first water inlet valve port and the first water outlet valve port is conducted to supply water into the heat exchanger and fill the pressure water storage tank and the heat exchanger with water, meanwhile, the second temperature control valve opens the second water outlet valve port and closes the second water outlet valve port, and then the channel between the second water inlet valve port and the second water outlet valve port is conducted to enable external cold water to enter the heat exchanger through the water inlet pipe for heating and then to flow out through the water outlet pipe.
In this embodiment, the first commutation temperature and the second commutation temperature are both preset temperature values, preferably preset at 4 ℃, but not limited to 4 ℃, and may also be preset at other more suitable temperatures according to actual requirements. According to the control method of the anti-freezing gas water heater, the temperature of water in the detection pipe and the temperature of the outside are respectively compared with the preset reversing temperature, and the corresponding pipelines are opened or closed according to the judgment result to determine whether residual water in the water inlet pipe, the water outlet pipe and the heat exchanger is discharged outwards, so that the gas water heater has an anti-freezing function.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (7)
1. An anti-freezing gas water heater comprises a heat exchanger (1), a water inlet pipe (2) and a water outlet pipe (3), wherein the heat exchanger (1) is respectively connected with the water inlet pipe (2) and the water outlet pipe (3), external cold water enters the heat exchanger (1) through the water inlet pipe (2) to be heated and then flows out through the water outlet pipe (3), the anti-freezing gas water heater is characterized by further comprising a first temperature control valve (4), a second temperature control valve (5), a first water outlet pipe (6) and a second water outlet pipe (7), the first temperature control valve (4) is arranged between the water inlet pipe (2) and the heat exchanger (1), the first temperature control valve (4) is at least provided with a first water inlet valve port (41), a first water outlet valve port (42) and a first water outlet valve port (43), wherein the first water inlet valve port (41) is connected with the water inlet pipe (2), the first water outlet valve port (42) is connected with the heat exchanger (1), and the first water discharge valve port (43) is connected with the first water discharge pipe (6);
The second temperature control valve (5) is arranged between the heat exchanger (1) and the water outlet pipe (3), the second temperature control valve (5) is at least provided with a second water inlet valve port (51), a second water outlet valve port (52) and a second water discharge valve port (53), wherein the second water inlet valve port (51) is connected with the heat exchanger (1), the second water outlet valve port (52) is connected with the water outlet pipe (3), and the second water discharge valve port (53) is connected with the second water discharge pipe (7).
2. an anti-freezing gas water heater according to claim 1, characterized in that the first temperature control valve (4) has a first reversing temperature, when the temperature of the water flowing into the first temperature control valve (4) is higher than the first reversing temperature, the passage in the first temperature control valve (4) for connecting the first water inlet valve port (41) and the first water outlet valve port (42) is communicated, and the passage in the first temperature control valve (4) for connecting the first water outlet valve port (43) and the first water outlet valve port (42) is blocked;
When the temperature of water flowing into the first temperature control valve (4) is lower than the first reversing temperature, a channel in the first temperature control valve (4) for connecting the first drain valve port (43) and the first outlet valve port (42) is communicated, and a channel in the first temperature control valve (4) for connecting the first inlet valve port (41) and the first outlet valve port (42) is cut off.
3. An anti-freezing gas water heater according to claim 1, characterized in that the second temperature control valve (5) has a second reversing temperature, when the temperature of the water flowing into the second temperature control valve (5) is higher than the second reversing temperature, the passage in the second temperature control valve (5) for connecting the second water inlet valve port (51) and the second water outlet valve port (52) is communicated, and the passage in the second temperature control valve (5) for connecting the second water inlet valve port (51) and the second water outlet valve port (53) is blocked;
When the temperature of water flowing into the second temperature control valve (5) is lower than the second reversing temperature, a channel in the second temperature control valve (5) for connecting the second water inlet valve port (51) and the second water outlet valve port (53) is communicated, and a channel in the second temperature control valve (5) for connecting the second water inlet valve port (51) and the second water outlet valve port (52) is cut off.
4. An anti-freeze gas water heater according to claim 1, 2 or 3, characterized in that a pressure storage tank (8) is provided between the first temperature control valve (4) and the heat exchanger (1).
5. Anti-freeze gas water heater according to claim 4, characterized in that the pressure storage tank (8) is located at a higher level than the heat exchanger (1).
6. An anti-freezing gas water heater according to claim 5, characterized in that the pressure storage tank (8) has a water inlet (81) and a water outlet (82), wherein the water inlet (81) is located at the top of the pressure storage tank (8) and is connected with the first water outlet valve port (42), and the water outlet (82) is located at the bottom of the pressure storage tank (8) and is connected with the heat exchanger (1).
7. An anti-freezing gas water heater according to claim 1, 2 or 3, characterized in that the first temperature control valve (4) and the second temperature control valve (5) are both mechanical temperature control three-way valves.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920005719.2U CN209801758U (en) | 2019-01-03 | 2019-01-03 | anti-freezing gas water heater |
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| CN201920005719.2U CN209801758U (en) | 2019-01-03 | 2019-01-03 | anti-freezing gas water heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631312A (en) * | 2019-01-03 | 2019-04-16 | 华帝股份有限公司 | Anti-freezing gas water heater and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631312A (en) * | 2019-01-03 | 2019-04-16 | 华帝股份有限公司 | Anti-freezing gas water heater and control method thereof |
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