CN207268539U - Rear end water-mixing type gas heater - Google Patents
Rear end water-mixing type gas heater Download PDFInfo
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- CN207268539U CN207268539U CN201721094829.8U CN201721094829U CN207268539U CN 207268539 U CN207268539 U CN 207268539U CN 201721094829 U CN201721094829 U CN 201721094829U CN 207268539 U CN207268539 U CN 207268539U
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Abstract
The utility model provides a kind of rear end water-mixing type gas heater, water inlet pipe is equipped with water flow sensor, water inlet pipe connects the water inlet of heat exchanger, the water outlet of the water inlet connection heat exchanger of hot water inlet pipe, outlet pipe is provided with leaving water temperature sensors, the water outlet connection straight pipe of hot water inlet pipe and the water inlet of by-pass collar, straight pipe connects the water inlet of outlet pipe with the water outlet of by-pass collar, straight-through temperature sensor is arranged in hot water inlet pipe or straight pipe, by-pass collar is equipped with water servomechanism, water flow sensor, straight-through temperature sensor, leaving water temperature sensors, water servomechanism is connected with controller；The defects of gas heater leaving water temperature in the prior art is unstable, and comfort level is poor and security is relatively low is solved, gas heater effluent temperature constancy is realized, improves comfort level and security.
Description
Technical field
It the utility model is related to gas heater, and in particular to a kind of rear end water-mixing type gas heater.
Background technology
Water temperature stability is constant temp gas water heater main performance index, and conventional gas heater is cut off the water in use
When being then turned on, caused water cut-off temperature-rising higher by exchanger heat inertia effects, it may appear that water temperature elevated phenomenon suddenly；Meanwhile weight
New startup Water heater igniting valve opening heating needs the regular hour, causes then and one section of cold water occurs.In addition process is being used
During middle water pressure fluctuations, it may appear that the sometimes hot and sometimes cold phenomenon of water temperature.Ultimately cause user comfortably experienced using hot water it is poor.
In order to solve above-mentioned user's pain spot, industry Normal practice is increase by-pass collar, hot water effluent end and cold water into
Water end (W.E.) increases by one section of less water pipe of diameter and is used for mixing water, can reduce water cut-off temperature-rising, cut off the water halfway and be then turned on being not in one
Duan Rongyi scalds the high-temperature water of people, but has one section of cold water to influence user and use hot water comfort level, in addition also can't resolve
In work during water pressure fluctuations, it may appear that the sometimes hot and sometimes cold phenomenon of water temperature.And by-pass collar pipe diameter size is difficult to adapt to different uses
Situation, by-pass collar the choice of diameter is too small, water cut-off temperature-rising reducing effect unobvious；By-pass collar the choice of diameter is excessive, and can make
It is excessive into heat exchanger water temperature inside, water flow very little easily occur under the very high use condition of set temperature vaporization noise and
High temperature protection phenomenon.
Patent Office of the People's Republic of China discloses CN103344046A patents, entitled constant temp gas water heater on October 09th, 2013
Control method and constant temp gas water heater, the bypass pipe of the technology connect the water inlet pipe and outlet pipe of water heater, are set on bypass pipe
Bypass water servomechanism is equipped with, the water flow of control bypass water servomechanism action adjustment bypass pipe, makes the leaving water temperature of outlet pipe permanent
Calmly, the hot water of output excessive temperature is avoided, but does not solve the problems, such as that gas heater leaving water temperature is too low.
Utility model content
The purpose of the utility model is to overcome above-mentioned deficiency existing in the prior art, and provide a kind of rear end water-mixing type
Gas heater, gas heater leaving water temperature is unstable in the prior art for solution, and comfort level is poor and security is relatively low lacks
Fall into, realize gas heater effluent temperature constancy, improve comfort level and security.
The technical scheme in the invention for solving the above technical problem is：A kind of rear end water-mixing type gas heater, bag
Include controller, water inlet pipe, water flow sensor, heat exchanger, hot water inlet pipe, leaving water temperature sensors, outlet pipe；The water inlet
Pipe is equipped with water flow sensor；Water inlet pipe connects the water inlet of heat exchanger；The water inlet connection heat exchanger of the hot water inlet pipe
Water outlet；The outlet pipe is provided with leaving water temperature sensors；Its architectural feature is：Further include straight pipe, by-pass collar,
Straight-through temperature sensor, water servomechanism；The water outlet connection straight pipe of the hot water inlet pipe and the water inlet of by-pass collar；Institute
State the water inlet that straight pipe connects outlet pipe with the water outlet of by-pass collar；The straight-through temperature sensor is arranged on hot water water inlet
In pipe or straight pipe；The by-pass collar is equipped with water servomechanism；The water flow sensor, straight-through temperature sensor, go out water temperature
Degree sensor, water servomechanism are connected with controller.
Preferably, further include front end three-way connection；The water outlet connection front end three-way connection of the hot water inlet pipe
Before first connector, the second connector connection of water inlet connection front end three-way connection of straight pipe, the water inlet connection of by-pass collar
Hold the 3rd connector of three-way connection.
Preferably, further include rear end three-way connection；The first of the water outlet connection rear end three-way connection of the straight pipe
Connector, the second connector of water outlet connection rear end three-way connection of by-pass collar, the water inlet connection rear end three of outlet pipe connect
3rd connector of head.
Preferably, the water flow sensor, straight-through temperature sensor, leaving water temperature sensors, water servomechanism with
Controller is connected by electric signal.
Preferably, the by-pass collar is bypass pipe or water tank.
Preferably, the water servomechanism is water solenoid valve or water ratio adjusting valve.
Preferably, the by-pass collar is equipped with bypass temperature sensor, bypass temperature sensor is connected with controller.
The utility model compared with prior art, has the following advantages and effect：Between hot water inlet pipe and straight pipe
By-pass collar is provided with, by-pass collar is equipped with water servomechanism, controls water servomechanism by straight-through temperature sensor so that water outlet
The temperature of pipe tends to be constant, avoids that the temperature of outlet pipe is excessive or too low, improves the comfort level and peace of gas heater
Quan Xing.
Brief description of the drawings
Fig. 1 is the structure diagram of water-mixing type gas heater embodiment in rear end of the present invention；
Fig. 2 is the flow diagram of rear end water-mixing type gas heater control method embodiment of the present invention；
Fig. 3 is to close water in the embodiment of the present invention halfway to be then turned on heating properties improvement schematic diagram；
Fig. 4 is the middle water flow fluctuation temperature persistance improvement schematic diagram that works in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and the utility model is described in further detail by embodiment, and following embodiments are pair
The explanation of the utility model and the utility model is not limited to following embodiments.
Embodiment.
Referring to Fig. 1, a kind of rear end water-mixing type gas heater, its structure includes controller 1, water flow sensor 2, heat exchange
Device 3, hot water inlet pipe 4, straight-through temperature sensor 5, front end three-way connection 6, straight pipe 7, rear end three-way connection 8, leaving water temperature
Sensor 9, outlet pipe 10, bypass temperature sensor 11, bypass pipe 12, water solenoid valve 13, water inlet pipe 14.
Water inlet pipe 14 is provided with water flow sensor 2, and water inlet pipe 14 connects the water inlet of heat exchanger 3.
The water outlet of the water inlet connection heat exchanger 3 of hot water inlet pipe 4.
Water outlet, the second connector of the first connector connection hot water inlet pipe 4 of front end three-way connection 6 connects straight pipe 7
The water inlet of water inlet, the 3rd connector connecting bypass pipe 12.
The water outlet of the water outlet, the second connector connecting bypass pipe 12 of the first connector connection straight pipe 7 of rear end three-way connection 8
The water inlet of mouth, the 3rd connector connection outlet pipe 10.
Hot water inlet pipe 4 is provided with straight-through temperature sensor 5.
Outlet pipe 10 is provided with leaving water temperature sensors 9.Bypass pipe 12 is provided with bypass temperature sensor 11 and water power magnetic
Valve 13.
Water flow sensor 2, straight-through temperature sensor 5, leaving water temperature sensors 9, bypass temperature sensor 11, water power magnetic
Valve 13 is connected with controller 1.
The rear end water-mixing type gas water heater working control flow of the utility model is as follows：
Step 1, carry out PID according to set temperature and adjust firepower so that straight-through hot water temperature reaches set temperature；
Step 2, the operating status for recording the rear end water-mixing type gas heater, while calculate the amendment temperature Δ of acquisition
T=（Straight-through hot water temperature-set temperature）；
If step 3, the rear end water-mixing type gas heater start first, step 30- steps 34 are performed；
Step 30, open water solenoid valve 13；
Step 31, by the straight-through temperature sensor 5 judge whether straight-through hot water temperature is more than or equal to set temperature；
If step 32, straight-through hot water temperature >=set temperature, close water solenoid valve 13；
If step 33, straight-through hot water temperature's ＜ set temperatures, return to step 32；
The operating status of the rear end water-mixing type gas heater recorded in step 34, renewal step 2；
Restart if water is closed in step 4, the rear end water-mixing type gas heater midway, perform step 40- steps 412；
Step 40, judged by the straight-through temperature sensor 5 straight-through hot water temperature whether be more than or equal to set temperature+
T1；
If step 41, straight-through hot water temperature >=set temperature+T1, then water solenoid valve 13 is opened；
If step 42, straight-through hot water temperature's ＜ set temperatures+T1, then return to step 41；
Step 43, judge whether straight-through hot water temperature is less than or equal to set temperature；
If step 44, straight-through hot water temperature≤set temperature, close water solenoid valve 13；
If step 45, straight-through hot water temperature's ＞ set temperatures, return to step 44；
Step 46, judge whether straight-through hot water temperature is less than or equal to set temperature-T2；
If step 47, straight-through hot water temperature≤set temperature-T2, then water solenoid valve 13 is opened；
If step 48, straight-through hot water temperature are more than set temperature-T2, then return to step 47；
Step 49, judge whether straight-through hot water temperature is more than or equal to set temperature；
If step 410, straight-through hot water temperature >=set temperature, close water solenoid valve 13；
If step 411, straight-through hot water temperature's ＜ set temperatures, return to step 410；
The operating status of the rear end water-mixing type gas heater recorded in step 412, renewal step 2；
If water flow fluctuates in step 5, the rear end water-mixing type gas water heater working, step 50- steps 55 are performed；
Step 50, judged by the straight-through temperature sensor 5 straight-through hot water temperature whether be more than or equal to set temperature+
T3；
If step 51, straight-through hot water temperature >=set temperature+T3, then step 510- steps 514 are performed；
If step 52, straight-through hot water temperature's ＜ set temperatures+T3, then step 53 is performed；
Step 510, open water solenoid valve 13；
Step 511, by the straight-through temperature sensor 5 judge whether straight-through hot water temperature is less than or equal to set temperature；
If step 512, straight-through hot water temperature≤set temperature, close water solenoid valve 13；
If step 513, straight-through hot water temperature's ＞ set temperatures, return to step 512；
The operating status of the rear end water-mixing type gas heater recorded in step 514, renewal step 2；
Step 53, by the straight-through temperature sensor 5 judge whether straight-through hot water temperature is less than or equal to set temperature-T3
If step 54, straight-through hot water temperature≤set temperature-T3, then step 540- steps 544 are performed；
If step 55, straight-through hot water temperature's ＞ set temperatures-T3, then step 2 is performed；
Step 540, open water solenoid valve 13；
Step 541, by the straight-through temperature sensor 5 judge whether straight-through hot water temperature is more than or equal to set temperature；
If step 542, straight-through hot water temperature >=set temperature, close water solenoid valve 13；
If step 543, straight-through hot water temperature's ＜ set temperatures, return to step 542；
The operating status of the rear end water-mixing type gas heater recorded in step 544, renewal step 2；
Wherein, straight-through hot water temperature is to lead directly to the temperature that temperature sensor detects water in hot water inlet pipe, T1For combustion gas
Water heater starts the upper limit temperature difference, T2Start the lower limit temperature difference, T for gas heater3For constant temperature temperature difference threshold values.
Embodiment is as follows：
When rear end water-mixing type gas heater start uses first or previous usage time interval was more than 5 minutes, water flow
After sensor 2 has detected water-flow signal, water solenoid valve 13 is opened, water heater starts combustion heating and heat is led directly into straight pipe 7
When coolant-temperature gage is more than or equal to set temperature, water solenoid valve 13 is closed, at this time, 12 water temperature of bypass pipe is approximately equal to set temperature.
When rear end water-mixing type gas heater midway pass water is then turned on, straight-through temperature sensor 5 detects straight-through hot water temperature
When degree is more than or equal to+2 DEG C of set temperature, water solenoid valve 13 is opened, 7 hot water of straight pipe goes out water temperature after being mixed with 12 hot water of bypass pipe
Degree is less than or equal to+4 DEG C of set temperature（Conventional gas heater maximum water temperature reaches+8 DEG C of set temperature）；It is straight when detecting
When logical hot water temperature is less than or equal to set temperature, water solenoid valve 13 is closed；When detect straight-through hot water temperature be less than or equal to set
During -4 DEG C of temperature, water solenoid valve 13 is reopened, leaving water temperature is more than or equal to after 7 hot water of straight pipe is mixed with 12 hot water of bypass pipe
- 6 DEG C of set temperature（The conventional minimum leaving water temperature of gas heater reaches -12 DEG C of set temperature）；When detecting straight-through hot water temperature
When degree is more than or equal to set temperature, water solenoid valve 13 is closed, water heater enters normal constant temperature working status.Rear end water-mixing type combustion gas
Water heater midway is closed water and is then turned on, and in the range of 20 DEG C of inflow temperature, water flow 5L~10L, 42 DEG C of user setting temperature is conventional
Gas heater outlet water temperature range is 30 DEG C~50 DEG C, and human body cannot directly take a shower use；And after the utility model
It is 36 DEG C~46 DEG C to hold water-mixing type gas heater outlet water temperature range, and in the range of human bathing receiving, can directly take a shower makes
With.
Occur water flow during the water-mixing type gas water heater working of rear end and become hour, the water of hot water inlet pipe 4 can be caused
Temperature becomes higher, and when straight-through temperature sensor 5 detects that straight-through hot water temperature is more than or equal to+2 DEG C of set temperature, opens water solenoid valve
13, leaving water temperature is less than or equal to+2 DEG C of set temperature after 7 hot water of straight pipe is mixed with 12 hot water of bypass pipe（Conventional gas heater
Maximum water temperature reaches+4 DEG C of set temperature）；When detecting that straight-through hot water temperature is less than or equal to set temperature, water power is closed
Magnet valve 13.When water flow occur during the water-mixing type gas water heater working of rear end and becoming larger, the water temperature of hot water inlet pipe 4 can be caused
It is lower, when straight-through temperature sensor 5 detects that straight-through hot water temperature is less than or equal to -2 DEG C of set temperature, opens water solenoid valve 13,
Leaving water temperature is more than or equal to -2 DEG C of set temperature after 7 hot water of straight pipe is mixed with 12 hot water of bypass pipe（Conventional gas heater is most
Low leaving water temperature reaches -4 DEG C of set temperature）；When detecting that straight-through hot water temperature is more than or equal to set temperature, water power magnetic is closed
Valve 13.When there is water flow fluctuation during the water-mixing type gas water heater working of rear end, when 20 DEG C of inflow temperature, water flow is in 5L
Fluctuated between~8L, 42 DEG C of user setting temperature, conventional gas heater leaving water temperature fluctuates ± 4 DEG C, and human body is substantially felt
Feel sometimes hot and sometimes cold；And the rear end water-mixing type gas heater leaving water temperature of the utility model fluctuates ± 2 DEG C, human body sensory water temperature is steady
It is fixed, take a shower comfortable.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components, be named
Title etc. can be different, and the above content described in this specification is only to the utility model structure example explanation.
The equivalence changes or simple change that all construction, feature and principles according to described in the utility model patent concept are done, are wrapped
Include in the protection domain of the utility model patent.Those skilled in the art of the present invention can be to described
Specific embodiment does various modifications or additions or substitutes in a similar way, without departing from the knot of the utility model
Structure surmounts scope defined in the claims, all should belong to the protection range of the utility model.
Claims (7)
1. a kind of rear end water-mixing type gas heater, including the water inlet of controller, water inlet pipe, water flow sensor, heat exchanger, hot water
Pipe, leaving water temperature sensors, outlet pipe；The water inlet pipe is equipped with water flow sensor；Water inlet pipe connects the water inlet of heat exchanger；
The water outlet of the water inlet connection heat exchanger of the hot water inlet pipe；The outlet pipe is provided with leaving water temperature sensors；It is special
Sign is：Further include straight pipe, by-pass collar, straight-through temperature sensor, water servomechanism；The water outlet of the hot water inlet pipe connects
Connect the water inlet of straight pipe and by-pass collar；The straight pipe connects the water inlet of outlet pipe with the water outlet of by-pass collar；Institute
Straight-through temperature sensor is stated to be arranged in hot water inlet pipe or straight pipe；The by-pass collar is equipped with water servomechanism；The current
Quantity sensor, straight-through temperature sensor, leaving water temperature sensors, water servomechanism are connected with controller.
2. water-mixing type gas heater in rear end according to claim 1, it is characterised in that：Further include front end three-way connection；
First connector of the water outlet connection front end three-way connection of the hot water inlet pipe, the water inlet connection front end three of straight pipe connect
Second connector of head, the 3rd connector of the water inlet connection front end three-way connection of by-pass collar.
3. water-mixing type gas heater in rear end according to claim 1, it is characterised in that：Further include rear end three-way connection；
First connector of the water outlet connection rear end three-way connection of the straight pipe, the water outlet connection rear end three-way connection of by-pass collar
The second connector, outlet pipe water inlet connection rear end three-way connection the 3rd connector.
4. water-mixing type gas heater in rear end according to claim 1, it is characterised in that：It is the water flow sensor, straight
Logical temperature sensor, leaving water temperature sensors, water servomechanism are connected with controller by electric signal.
5. water-mixing type gas heater in rear end according to claim 1, it is characterised in that：The by-pass collar is bypass pipe
Or water tank.
6. water-mixing type gas heater in rear end according to claim 1, it is characterised in that：The water servomechanism is water power magnetic
Valve or water ratio adjusting valve.
7. water-mixing type gas heater in rear end according to claim 1, it is characterised in that：The by-pass collar is equipped with bypass
Temperature sensor, bypass temperature sensor are connected with controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721094829.8U CN207268539U (en) | 2017-08-30 | 2017-08-30 | Rear end water-mixing type gas heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721094829.8U CN207268539U (en) | 2017-08-30 | 2017-08-30 | Rear end water-mixing type gas heater |
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| Publication Number | Publication Date |
|---|---|
| CN207268539U true CN207268539U (en) | 2018-04-24 |
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ID=61960520
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721094829.8U Active CN207268539U (en) | 2017-08-30 | 2017-08-30 | Rear end water-mixing type gas heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421102A (en) * | 2017-08-30 | 2017-12-01 | 杭州德意电器股份有限公司 | Rear end water-mixing type gas heater and its control method |
-
2017
- 2017-08-30 CN CN201721094829.8U patent/CN207268539U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421102A (en) * | 2017-08-30 | 2017-12-01 | 杭州德意电器股份有限公司 | Rear end water-mixing type gas heater and its control method |
| CN107421102B (en) * | 2017-08-30 | 2022-09-16 | 杭州德意电器股份有限公司 | Rear-end water mixing type gas water heater and control method thereof |
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