CN211823183U - Water temperature control device of hot water unit - Google Patents
Water temperature control device of hot water unit Download PDFInfo
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- CN211823183U CN211823183U CN202020258848.5U CN202020258848U CN211823183U CN 211823183 U CN211823183 U CN 211823183U CN 202020258848 U CN202020258848 U CN 202020258848U CN 211823183 U CN211823183 U CN 211823183U
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Abstract
A water temperature control device of a hot water unit is characterized in that a water inlet pipe is connected with a water inlet at the water side of a condenser. The water outlet pipe is used for being connected with a water outlet at the water side of the condenser. The water inlet pipe and the water outlet pipe are connected through a bypass pipe. And a second water quantity control valve and a second water electromagnetic valve are arranged on the bypass pipe. A first water quantity control valve and a condenser water outlet temperature sensor are arranged on the water outlet pipe from a water outlet at the water side of the condenser. The connection part of the bypass pipe and the water outlet pipe is positioned behind the first water quantity control valve and the condenser water outlet temperature sensor. The water inlet pipe is provided with a tap water inlet pressure sensor, a tap water inlet temperature sensor, a water stop valve, a water flowmeter and a first water electromagnetic valve. The joint of the bypass pipe and the water inlet pipe is positioned between the first water electromagnetic valve and the water side water inlet of the condenser. The water outlet pipe is provided with a hot water outlet temperature sensor which is positioned behind the bypass pipe. High water production efficiency and quick temperature rise response. The hot water outlet temperature is stable, and the energy efficiency ratio is high.
Description
Technical Field
The utility model belongs to the temperature control device field of hot water unit, in particular to temperature control device of hot water unit mainly is applied to directly-heated hot water unit, has solved when the running water temperature of coming water is too high or set for about 40 degrees centigrade low temperature hot water constant temperature to go out water, because of the restriction of hot water unit design parameter, leads to the super working range operation of hot water unit, the temperature control inefficacy appears, and hot water leaving water temperature is to high temperature skew, triggers the phenomenon of the overtemperature of condenser and superpressure warning even.
After the water temperature control device is installed on the hot water unit, when the above conditions occur, the control device can reasonably distribute and adjust the distribution of tap water and hot water while ensuring that the refrigeration system works in an optimal working area, and the tap water and the hot water produced by the refrigeration system are mixed by adopting a shunt mixing mode, so that the stable constant-temperature production of the hot water unit is ensured. The device ensures that the temperature of hot water is accurately controlled, simultaneously increases the hot water yield of the hot water unit, improves the running COP (coefficient of performance) of the hot water unit, reduces the running energy consumption of the hot water unit, and is a good technology achieving multiple purposes.
Background
People can not take bath in social production and living activities, bath is not only a body cleaning mode along with social progress, and the bath center is developed into a place which takes bath as a service main body and integrates multiple functions of catering, leisure and the like, and the pursuit of people for high-quality healthy life such as health preservation, health care and the like is reflected everywhere. With the rapid development of society, the production equipment of bathing hot water is gradually developed from the traditional coal-fired boiler to novel environment-friendly hot water equipment such as a gas boiler, a sewage waste heat recovery hot water unit and the like. In the hot water unit, the direct heating type hot water unit has the characteristics of high hot water outlet temperature, high water outlet speed, capability of reaching the use temperature by heating once and high operation efficiency, and is most widely applied. However, when the temperature of the incoming tap water is too high, the hot water unit fails to control the outlet water temperature when the low-temperature hot water is discharged at a constant temperature of about 40 ℃, the outlet water temperature of the hot water deviates to a high temperature, and even an overtemperature alarm and an overpressure alarm of the condenser are triggered. Therefore, for the directly-heated hot water unit, the original temperature control mechanism is replaced by the novel water temperature adjusting device, which is very necessary and has positive significance.
The utility model has the following contents:
the utility model aims at providing a temperature control device of hot water unit can solve the problem that directly-heated hot water unit hot water goes out the temperature and is higher than the settlement temperature and leads to the control by temperature change inefficacy.
The technical scheme is as follows:
a water temperature control device of a water heating unit comprises a water inlet pipe and a water outlet pipe.
The technical key points are as follows:
the water inlet pipe is used for being connected with a water inlet at the water side of the condenser.
The water outlet pipe is used for being connected with a water outlet at the water side of the condenser.
The water inlet pipe and the water outlet pipe are connected through a bypass pipe.
And a second water quantity control valve and a second water electromagnetic valve are arranged on the bypass pipe.
A first water quantity control valve and a condenser water outlet temperature sensor are arranged on the water outlet pipe from a water outlet at the water side of the condenser.
The connection part of the bypass pipe and the water outlet pipe is positioned behind the first water quantity control valve and the condenser water outlet temperature sensor.
The water inlet pipe is provided with a tap water inlet pressure sensor, a tap water inlet temperature sensor, a water stop valve, a water flowmeter and a first water electromagnetic valve from a tap water inlet.
The joint of the bypass pipe and the water inlet pipe is positioned between the first water electromagnetic valve and the water side water inlet of the condenser.
The hot water outlet temperature sensor is arranged on the water outlet pipe and is positioned behind the bypass pipe.
The second water electromagnetic valve is positioned on one side of the water outlet pipe.
The second water quantity control valve is positioned on one side of the water inlet pipe.
1. The problem of hot water leaving water temperature is higher than the settlement temperature and leads to the control by temperature change inefficacy is solved, and novel water temperature control device adopts the double-circuit water supply mode (A way water supply and B way water supply), and A, B way all has independent flow control mechanism. The water supply of the path A enters a condenser of the hot water unit, and the water supply of the path B does not pass through the unit and is converged with the water supply of the path A at the outlet position of the condenser.
2. The way A water supply enters a condenser of the unit, the unit selects the optimal working condition according to the operating condition, the maximum heat is released to the way A water supply as far as possible, the temperature of the way A water supply outlet is reduced as far as possible, and the highest operating efficiency of the refrigerating system is realized.
3. And adjusting the water flow of the water supply of the path B according to the outlet water temperature of the water supply of the path A, so that the temperature of the mixed water reaches the outlet water temperature required by setting after the water supply of the path A and the water supply of the path B are mixed.
4. The flow control of the water supply of the path A and the water supply of the path B are completed by the control program of the hot water unit. The flow control adjusting signal of the A-way water supply is given by the output of the refrigerating system, and the highest operation efficiency of the hot water unit is ensured.
5. The flow control adjusting signal of the B-path water supply is given by the output of the outlet water temperature of the hot water unit, and the flow of the B-path water supply ensures the stable outlet water temperature of the hot water unit.
6. The water yield of the water heating unit is the sum of the water yields of the A path and the B path.
In the refrigeration system circulation of the hot water unit, a refrigerant absorbs heat from an evaporator, returns to a compressor, is compressed to do work, and then enters a condenser to release heat. This heat released in the condenser includes not only the heat absorbed by the refrigerant from the evaporator, but also the heat generated by the compressor doing work. The condenser is a heat exchanger and is provided with two medium channels, wherein one medium channel is a refrigerant, and the other medium channel is tap water. The refrigerant exchanges heat with tap water in the condenser, the refrigerant releases heat, the temperature is reduced, and the tap water absorbs the heat and the temperature is increased. Tap water enters the condenser through a water side water inlet of the condenser, absorbs heat released by the refrigerant, passes through the flow control device and the temperature control device, is heated to a set temperature, and flows out of a water side water outlet of the condenser, so that hot bathing water is produced.
In the actual operation of the hot water unit, the external environmental conditions can influence the stability of the outlet water temperature of the hot water unit, mainly the incoming water temperature of tap water. When the temperature of the incoming water of the tap water is too high, the condenser releases too much heat to the tap water, the high-temperature deviation of the outlet water temperature of hot water can occur, the actual outlet water temperature of the hot water is higher than the set temperature, the outlet water temperature control fails, the high-temperature alarm and the high-pressure alarm of the unit can be caused in serious conditions, and the unit is in fault shutdown. The reason for this is that the refrigeration system must be able to operate within an operating range determined by the operating conditions of the refrigeration system in the hot water unit, which, although wide, still does not satisfy all objective operating conditions. When the temperature of tap water is too high, the operation condition of the hot water unit exceeds the operation range of the refrigeration system, so that the unit fails. At the moment, in order to realize normal work of the hot water unit, the water temperature control mechanism in the unit needs to be adjusted, the external condition exceeding the range is changed into the controllable range, and meanwhile, the originally born energy exceeding the unit operation range is promoted and converted into the directly utilized heat resource.
The utility model provides a following technical problem:
1. the problem of temperature control failure caused by the fact that the temperature of hot water outlet water is higher than a set temperature is solved. When the temperature of tap water is higher and the temperature of hot water outlet is lower, the hot water outlet temperature of the hot water unit is out of control. For example, in bathing pools in places such as schools, for safety, single-pipe constant-temperature water supply is adopted for hot water supply, and the temperature of hot water outlet water is generally required to be about 39-40 ℃. In summer, the temperature of the incoming water of the tap water can reach more than 25 ℃, the heat absorbed by the hot water in the heating process does not need to be large, but the heat released by the hot water unit in operation can not be reduced due to less needed heat, so that the provided heat is larger than the heat required by the tap water for warming, and when the hot water flows out of the hot water unit, the temperature is heated too high and is higher than the hot water outlet temperature set by the unit, and the hot water unit can not ensure the constant-temperature hot water outlet of the set temperature. In order to ensure that the hot water unit can stably output hot water, the requirement of the hot water unit cannot be met by simply adjusting the hot water unit, and a novel water temperature control device is required to ensure the stable operation and the hot water output of the hot water unit.
2. If the unit is forced to operate, the tap water must be artificially cooled, so that not only is heat dissipation equipment increased, but also partial heat is artificially and forcibly dissipated. In the subsequent hot water production heating process, energy consumption is needed to supplement the lost heat, and extra energy is also needed to be consumed in the forced heat dissipation process, so that repeated energy waste is caused. After adopting neotype temperature control device, can effectually avoid these problems.
3. The operation efficiency of the hot water unit is improved, and the water yield is increased. Adopt neotype temperature control device's hot water unit, not only do not have calorific loss, can also be with these heat conversion that are the burden originally to the energy of heating, can not only improve the operating efficiency of hot water unit, reduce the operation energy consumption of unit, can also increase the water yield of unit, guarantee that the operation of unit is stable.
The advantages are that:
1. high water-producing efficiency and direct heating. Tap water flows out of the unit to reach the required temperature, and the temperature rise response is fast.
2. The temperature of the hot water outlet is stable.
3. The energy efficiency ratio is high (1 energy efficiency ratio or more than that of the commonly used equipment).
4. The water yield is large.
5. The structure is exquisite, to traditional hot water unit improve can.
6. Automatic adjustment, degree of automation is high.
Drawings
Fig. 1 is a schematic diagram of the system of the present invention.
The condenser comprises a condenser 1, (G1) a first water quantity control valve 2 (electric), (G2) a second water quantity control valve 3 (electric), (G3) a water stop valve 4 (manual), (G4) a water flow meter 5, (G5) a first water electromagnetic valve 6, (G6) a second water electromagnetic valve 7, (G7) a refrigerant liquid supply electromagnetic valve 8, (Y1) a tap water inlet pressure sensor 9, (Y2) a tap water inlet temperature sensor 10, (Y3) a condenser outlet water temperature sensor 11, (Y4) a hot water outlet water temperature sensor 12, a water inlet pipe 13, a water outlet pipe 14, a bypass pipe 15, a tap water inlet 16 and a blow-down valve 17 (manual).
Detailed Description
A water temperature control device of a hot water unit comprises a first water quantity control valve 2 (G1), a second water quantity control valve 3 (G2), a water stop valve 4 (G3), a water flow meter 5 (G4), a first water electromagnetic valve 6 (G5), a second water electromagnetic valve 7 (G6), a refrigerant liquid supply electromagnetic valve 8 (G7), a tap water inlet pressure sensor 9 (Y1), a tap water inlet temperature sensor 10 (Y2), a condenser outlet water temperature sensor 11 (Y3) and a hot water outlet water temperature sensor 12 (Y4).
The water inlet pipe 13 is connected to the water side water inlet of the condenser 1 (C1).
The water outlet pipe 14 is connected with a water side water outlet of the condenser 1 (C1).
The water inlet pipe 13 and the water outlet pipe 14 are used for A path of water to enter the condenser 1.
The water inlet pipe 13 and the water outlet pipe 14 are connected through a bypass pipe 15, and the bypass pipe 15 supplies water for the B path without entering the condenser 1.
The water supply of the A path and the water supply of the B path are linked to complete the temperature control of the hot water outlet.
The water inlet pipe 13 is sequentially provided with a tap water inlet pressure sensor 9, a tap water inlet temperature sensor 10, a water stop valve 4, a water flowmeter 5 and a first water electromagnetic valve 6 from a tap water inlet.
The water outlet pipe 14 is provided with a first water quantity control valve 2, a condenser outlet water temperature sensor 11 and a hot water outlet water temperature sensor 12 in sequence from a water outlet at the water side of the condenser 1.
One end of the bypass pipe 15 is connected to the water outlet pipe 14 between the condenser outlet water temperature sensor 11 and the hot water outlet water temperature sensor 12.
The other end of the bypass pipe 15 is connected to the water inlet pipe 13 between the first water solenoid valve 6 and the water side water inlet of the condenser 1.
The bypass pipe 15 is provided with a second water amount control valve 3 and a second water solenoid valve 7.
The second water electromagnetic valve 7 is positioned at one side of the water outlet pipe 14.
The second water quantity control valve 3 is positioned at one side of the water inlet pipe 13.
A blow-down valve 17 may further be provided between the first water solenoid valve 6 and the water side inlet of the condenser 1, with a by-pass line 15 connected between the blow-down valve 17 and the water side inlet of the condenser 1.
Description of the working process:
the utility model provides a temperature control device of hot water unit is mainly applied to directly-heated type hot water unit, when the external environment condition that appears that the running water temperature degree is too high and is skew, also can satisfy the normal work of hot water unit and hot water leaving water temperature control, its working process as follows:
1. the working process when the external environmental conditions are normal:
after the hot water unit is started, the hot water unit completes refrigeration cycle, and the condenser heats tap water to produce hot water. Tap water passes through a (Y1) tap water inlet pressure sensor 9, a (Y2) tap water inlet temperature sensor 10, a (G3) water stop valve 4, a (G4) water flow meter 5 and a (G5) first water electromagnetic valve 6, enters the condenser 1, is heated by heat released by the condenser 1, passes through a (G1) water flow control valve 2 and a (Y3) condenser water outlet temperature sensor 11, is controlled at a set temperature and is discharged at a constant temperature, and finally passes through a (Y4) hot water outlet temperature sensor 12 to an outlet of a water outlet pipe 14 to be sent out of a hot water unit, so that the heating process of the hot water is completed.
During the working process of the hot water unit, (G2) the second water quantity control valve 3, (G6) the second water electromagnetic valve 7 is closed.
2. Working process when the external environmental conditions deviate:
after the hot water unit is started, the hot water unit completes refrigeration cycle, and the condenser heats tap water to produce hot water. Tap water passes through a (Y1) tap water inlet pressure sensor 9, a (Y2) tap water inlet temperature sensor 10, a (G3) water stop valve 4, a (G4) water flow meter 5 and a (G5) first water electromagnetic valve 6, and then is divided into a path A water supply and a path B water supply. The path A of water supply enters the condenser 1, is heated by heat released by the condenser 1, and then passes through the (G1) first water quantity control valve 2 to realize maximization of the capacity of the refrigerating system and minimization of energy consumption, and (Y3) after the outlet water temperature of the path A of water supply is measured at the outlet of the condenser 1, the condenser outlet water temperature sensor 11 sends signals to an electrical control system of the unit, and then the electrical control system outputs command signals through calculation to control the output flow of the path B (G2) second water quantity control valve 3. The water supply of the B path passes through (G2) a second water quantity control valve 3, and (G6) a second water electromagnetic valve 7, and finally joins the water supply of the A path on a hot water outlet main path before (Y4) the hot water outlet temperature sensor 12. After the water supply of the A path and the water supply of the B path are mixed, the water temperature of the A path is reduced, the water temperature of the B path is increased, the water temperature of the A path and the water temperature of the B path are finally mixed to be the set water outlet temperature, the mixed water is sent out of the hot water unit through the hot water outlet temperature sensor 12 (Y4), and the heating process of the hot water is finished.
(G1) The first water quantity control valve 2 can realize independent operation or linkage operation with the (G2) second water quantity control valve 3 according to the signal of the electric control system of the hot water unit. (G2) The second water control valve 3 adjusts the amount of water supplied to the B-channel based on a signal from the electric control system, and operates in conjunction with the first water control valve 2 (G1).
This device can be according to the temperature of the running water that comes of running water, combines refrigerating system's operating range, judges the operating condition of hot water unit by oneself, and the operating condition of the first water control valve 2 of self-control adjustment (G1), (G2) second water control valve 3 and (G6) second water solenoid valve 7 guarantees that the hot water unit goes out water according to the temperature stability of settlement.
The condenser 1 has a refrigerant liquid outlet and is provided with (G7) a refrigerant liquid supply solenoid valve 8.
The condenser 1 has a refrigerant gas inlet.
Claims (3)
1. A water temperature control device of a water heating unit is provided with a water inlet pipe (13) and a water outlet pipe (14), and is characterized in that:
the water inlet pipe (13) is used for being connected with a water inlet at the water side of the condenser (1);
the water outlet pipe (14) is used for being connected with a water outlet at the water side of the condenser (1);
the water inlet pipe (13) and the water outlet pipe (14) are connected through a bypass pipe (15);
a second water quantity control valve (3) and a second water electromagnetic valve (7) are arranged on the bypass pipe (15);
a first water quantity control valve (2) and a condenser outlet water temperature sensor (11) are arranged on the water outlet pipe (14) from a water outlet at the water side of the condenser (1);
the connection part of the bypass pipe (15) and the water outlet pipe (14) is positioned behind the first water quantity control valve (2) and the condenser outlet water temperature sensor (11).
2. A water temperature control apparatus of a hot water unit as claimed in claim 1, wherein:
a tap water inlet pressure sensor (9), a tap water inlet temperature sensor (10), a water stop valve (4), a water flowmeter (5) and a first water electromagnetic valve (6) are arranged on the water inlet pipe (13) from a tap water inlet (16);
the joint of the bypass pipe (15) and the water inlet pipe (13) is positioned between the first water electromagnetic valve (6) and the water side water inlet of the condenser (1);
a hot water outlet temperature sensor (12) is arranged on the water outlet pipe (14), and the hot water outlet temperature sensor (12) is positioned behind the bypass pipe (15).
3. A water temperature control apparatus of a hot water unit as claimed in claim 1, wherein:
the second water electromagnetic valve (7) is positioned on one side of the water outlet pipe (14);
the second water quantity control valve (3) is positioned on one side of the water inlet pipe (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020258848.5U CN211823183U (en) | 2020-03-05 | 2020-03-05 | Water temperature control device of hot water unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020258848.5U CN211823183U (en) | 2020-03-05 | 2020-03-05 | Water temperature control device of hot water unit |
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| CN211823183U true CN211823183U (en) | 2020-10-30 |
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| CN202020258848.5U Active CN211823183U (en) | 2020-03-05 | 2020-03-05 | Water temperature control device of hot water unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758015A (en) * | 2021-08-27 | 2021-12-07 | 青岛经济技术开发区海尔热水器有限公司 | Control method of hot water system |
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2020
- 2020-03-05 CN CN202020258848.5U patent/CN211823183U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758015A (en) * | 2021-08-27 | 2021-12-07 | 青岛经济技术开发区海尔热水器有限公司 | Control method of hot water system |
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