CN102322687B - Heat-exchanging heat-preserving device of heat pump water heater - Google Patents
Heat-exchanging heat-preserving device of heat pump water heater Download PDFInfo
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- CN102322687B CN102322687B CN201110291404.7A CN201110291404A CN102322687B CN 102322687 B CN102322687 B CN 102322687B CN 201110291404 A CN201110291404 A CN 201110291404A CN 102322687 B CN102322687 B CN 102322687B
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Abstract
The invention relates to a heat-exchanging heat-preserving device of a heat pump water heater, especially to a device with the functions of complete heat exchange and heat preservation. A heat-preserving container capable of bearing tap water pressure can be divided into a heating cavity and a heat storage cavity by a structure, the upper parts of the two cavities are mutually communicated, the communicated part is a communication cavity; or the container is divided into a heating cavity and a heat storage cavity which are communicated by a pipeline; or the heating cavity and the communication cavity are two independent containers and are communicated by a pipeline; a heat insulation layer is arranged between the two sides of the structure; a heat exchange tube connected with a high pressure end of a compressor penetrates into the heat storage cavity from the lower part of the container, winds upwards and finally enters into the heating cavity from the upper end of the structure; and then the heat exchange tube winds downwards and goes out of the heating cavity from the lower end of the heating cavity to be connected with an evaporator; a water inlet tube penetrates from the lower end of the heating cavity, a water outlet tube penetrates into the heat storage cavity from the lower part of the container, hot water reaching a set temperature flows into the heat storage cavity for use from the heating cavity, thus heat energy in a medium can be fully released in water during constant-temperature water supply, condensing temperature of the medium can be reduced and energy efficiency can be improved.
Description
Affiliated technical field
The present invention relates to the heat exchange attemperator of Teat pump boiler, especially fully the device of heat exchange insulation.
Technical background
At present, the heat exchange attemperator of known Teat pump boiler, to be provided with delivery port on the top that can bear the cool-bag of tap water pressure, bottom is provided with water inlet, outside the inner casing of described container or in it from top to bottom but be not limited to the top-down heat exchanger tube that is provided with, in the air medium in heat exchanger tube being absorbed by heat exchanger tube but be not limited to airborne thermal power transfer in the water in container.Described heat exchange attemperator has following defect: 1. the water in container all will be heated to the temperature of setting, the medium in heat exchanger tube and the temperature difference of water will constantly be dwindled.According to Fourier law, the temperature difference is less, and heat transfer rate is lower.Along with the water temperature in container constantly raises, the temperature difference of medium and water is just constantly dwindled, and causes heat transfer rate constantly to decline, and is also that the conversion ratio of energy constantly declines.When the temperature difference is zero, the conversion ratio of energy is also zero.The technical data of announcing according to domestic certain famous enterprise of freezing, certain air-source water heater by airborne thermal power transfer in medium, can usefulness reach 3.6, but according to analyzing and pass through above calculating, when the water in water tank is heated to 50 ℃ of acquiescence from 15 ℃, described air-source water heater is by airborne thermal power transfer in medium, and in fact average efficiency only has 2.15, and in medium, on average only has 54% thermal power transfer in the water of container.Show thus, described air-source water heater is by airborne thermal power transfer in water, and in fact efficiency only has 1.16, its reason be exactly in whole heating process heat pump efficiency constantly decline and the heat transfer rate of heat exchanger tube constantly declines until be finally due to zero.2. according to Carnot's theorem, condensation temperature is higher, and the efficiency of compressor is lower, is embodied in medium from air but the heat energy that is not limited to absorb in air is fewer; Meanwhile, the condensation temperature of medium is higher, illustrates that the heat energy being discharged in water in medium is fewer, and heat transfer rate is lower.Two aspect combinations, cause vicious circle.3., when Teat pump boiler brings into operation, the condensation temperature of medium just continues to increase, until be equal to or higher than the design temperature of the water in container.The too high condensation temperature of medium, the lubricant effect variation, lubricating oil carbonization that causes compressor even compressor is burned; 4. while using hot water, though Teat pump boiler in service, but because hot water constantly flows out from top, cold water constantly flows into from bottom, in container, will soon occur hydrothermal area and cold water area.The heat transfer rate of water is very high, and hydrothermal area's heat energy can transmit to cold water area fast.Therefore in the shorter time, the heat energy in container will be evenly distributed in water, reaches thermal equilibrium state, and water temperature drops to be become water to be not suitable for using.In order to extend the time of constant temperature water supply, a water-stop sheet has been installed in the water tank of certain air-source water heater by domestic certain famous refrigeration enterprise.Heat energy transmits and is determined by hot transfer law from water temperature higher position to water temperature lower, and water-stop sheet can only stop that cold water pours hydrothermal area under the effect of pressure, can not stop heat transmission at all, and therefore the effect of described measure is very limited.
Summary of the invention
In order to overcome that the efficiency condensation temperature low, medium of current Teat pump boiler is too high, compressor is easily burned and the defect such as water temperature easily turns cold, the invention provides a kind of heat exchange attemperator, can increase substantially the efficiency of Teat pump boiler, the condensation temperature that reduces medium, the guarantee long-time safe operation of compressor and long-time constant temperature water supply.
The technical solution adopted for the present invention to solve the technical problems is: in bearing the cool-bag of tap water pressure, have a structure perpendicular to ground that the inner chamber of described container is separated into three chambers, one is heating chamber, and one is accumulation of heat chamber; The top of two chambers is interconnected, and connected component is connected chamber.Between the shell of described structure and inner casing, be provided with thermal insulation layer.The heat exchanger tube that connects compressor high-voltage end penetrates from the bottom of described container, enters accumulation of heat chamber hub disk around up, to the top in accumulation of heat chamber, folds into heating chamber, then coil descending, until pass with evaporimeter and be connected from the bottom of container.Water inlet pipe penetrates from the lower end of heating chamber, and the body of 10 centimeter length of having an appointment is vertically placed in the bottom of heating chamber.The delivery port of water inlet pipe seals, and has several apertures approaching on the arc surface of delivery port, for disperse water filling in heating chamber.Water inlet pipe penetrates to heating chamber from the bottom of container.The water inlet of water inlet pipe is connected with the delivery port of check valve, and the water inlet of check valve is connected with a threeway, and a water inlet of check valve is become to two water inlets.Two water inlets are connected with the delivery port of magnetic valve and the delivery port of electrically-controlled valve respectively.The water inlet of magnetic valve is connected with another threeway respectively with the water inlet of electrically-controlled valve, and another interface of this threeway is connected with running water pipe.This junction is provided with initial water temperature temperature sensor and contacts with running water, and this sensor is connected with control panel electric wire.The inlet end of the evaporimeter of described Teat pump boiler is provided with temperature sensor, and this sensor is connected with control panel electric wire.Magnetic valve is connected with control panel electric wire respectively with electrically-controlled valve.Outlet pipe penetrates to accumulation of heat chamber from the bottom of described container.Approaching described structure upper end, be provided with a bypass pipe and communicate with heating chamber.In this bypass pipe, anti-flow electrode is installed, anti-flow electrode is connected with control panel electric wire.A bypass pipe bottom, be provided with No. two bypass pipes and communicate with heating chamber, porosely on the tube wall of this bypass pipe communicate with accumulation of heat chamber.In No. two bypass pipes, hot water temperature's sensor is installed, this temperature sensor is connected with control panel electric wire.In the bottom of described container, be provided with No. three bypass pipes and communicate with its inner chamber, on the outer end of this bypass pipe, drain valve is installed.The bottom in heating chamber and accumulation of heat chamber is equipped with sewage draining exit.
The present invention can also be designed to two cavates, only have heating chamber and accumulation of heat chamber, there is no connected chamber.In partition between two chambeies, be provided with thermal insulation layer.Two cavates be divided into again two kinds of vertical type and gauche forms.Between two chambeies, with pipeline communication, the hot water that reaches design temperature in heating chamber flows into accumulation of heat chamber by pipeline.Heating chamber and accumulation of heat chamber can be made to two independently containers again, between two chambeies, with pipeline communication, the hot water that reaches design temperature in heating chamber flows into accumulation of heat chamber by pipeline.
Described structure can be plane, can be also cambered surface, can be carefully columnar, can be also slightly columnar, etc., as long as the inner chamber of described container can be separated into described heating chamber, accumulation of heat chamber and connected chamber or heating chamber and accumulation of heat chamber, all can.
It is up that heat exchanger tube can also be close to the back side coiling of outer wall of described structure, at the upper end that approaches described structure, turns back, and the back side of being close to the inwall of described structure is coiled descending, makes described structure or a heat-exchanger rig, to improve the durability of heat exchanger tube.
During first use, first close outlet valve, switch on power, then toward the interior water filling of container.When water touches anti-flow electrode, just can the break power supply of power down magnet valve of control panel, closed electromagnetic valve, stops water filling.Set heating-up temperature, start Teat pump boiler.In heating chamber, medium from top to bottom flows in heat exchanger tube, and therefore, the water temperature in heating chamber is from top to bottom constantly to reduce.When the water temperature that records heating chamber top by hot water temperature's sensor when control panel reaches design temperature, just can instruction open electrically-controlled valve, toward the flow direction perpendicular to water in heating chamber, disperse water filling.The hot water on the cold water promotion heating chamber top of injecting overflows across the upper end of described structure and injects accumulation of heat chamber.The water amount of electrically-controlled valve, after being calculated according to the data such as heating efficiency of environment temperature, the gentle compressor of initial water by control panel, determine, when the water that assurance reaches design temperature flows into accumulation of heat chamber from heating chamber continuously, the temperature of the end of the heat exchanger tube in heating chamber equals or a little more than the initial temperature of water, to reduce the condensation temperature of medium, improve heat exchange efficiency.Water temperature in accumulation of heat chamber is kept by the heat exchanger tube through therebetween, the highest maximum temperature that can reach medium of water temperature keeping.Along with the continuous injection of water, the pressure of the empty G&W in described container constantly raises, and when the pressure of water of described heating chamber bottom and the pressure of the water of water inlet pipe water side equate, just can automatically stop water filling.
Now close water intaking valve.Stop after water filling, water temperature in heating chamber continues to raise, and when water temperature is elevated to a certain value higher than design temperature, for invariable frequency compressor, the control panel power down source of will breaking, makes it out of service.Subsequently, if when water temperature is reduced to a certain value lower than design temperature, control panel can restart again compressor and heat, so repeatedly to keep water temperature.For frequency-changeable compressor, control panel sends the signal of converting operation to it after can calculating according to the data such as heating efficiency of environment temperature, the gentle compressor of initial water, makes it make low-frequency operation, to keep water temperature.Like this, from the water flowing out in accumulation of heat chamber, be the hot water that reaches design temperature all the time, until the pressure of the empty G&W in container equals atmospheric pressure, the hot water in accumulation of heat chamber is finished substantially.
Automatically stop after water filling, if do not close water intaking valve, as long as outlet pipe one water outlet, the pressure in container will decline, and when pressure drops to the pressure lower than the water in running water pipe, water inlet pipe will be automatically toward the interior moisturizing of heating chamber.Moisturizing declines the water temperature in heating chamber.The water temperature that records heating chamber top by hot water temperature's sensor when control panel during lower than a certain value of design temperature, just can instruction be closed electrically-controlled valve, stops to water filling in heating chamber.Meanwhile, for invariable frequency compressor, control panel will restart it and heat; For frequency-changeable compressor, control panel will instruction its do high frequency operation, to increase heating capacity.When the water temperature that records heating chamber top by hot water temperature's sensor when control panel reaches design temperature, just can instruction open electrically-controlled valve, to water filling in heating chamber.The hot water on the cold water promotion heating chamber top of injecting overflows across the upper end of described device and injects accumulation of heat chamber.Like this, just can extend the time of hot-water supply, increase in other words the supply of hot water.When the pressure of the water of described heating chamber bottom is during higher than the pressure of the water of water inlet pipe water side, check valve stops hot water return in container in running water pipe.When the pressure of the water and air in container reaches a certain value higher than the pressure of running water, drain valve is opened and is sluiced, and to reduce the pressure in container, ensures its safe operation.
Described while automatically stopping water filling, in container, having at most nearly 30% volume is compressed air, and its effect is: 1., when closing water intaking valve but be sometimes not limited to close water intaking valve while using the hot water in container, compressed air can extrude hot water; 2. the pressure slowing down in container raises.
If above-mentioned certain air-source water heater is used the present invention to make heat exchange attemperator, can improve heat pump efficiency 117%, heat transfer rate 46%, comprehensively improves actual efficiency 218%.
The invention has the beneficial effects as follows: can significantly improve the efficiency of Teat pump boiler, reduce the condensation temperature of medium, ensure the long-time safe operation of compressor and with stationary temperature, supply water for a long time.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the heat exchange attemperator of Teat pump boiler of the present invention is described.
Figure is one embodiment of the invention schematic diagrames.
1. shell of tanks in figure, 2. vessel insulation, 3. container inner casing, 4. accumulation of heat chamber, 5. heating chamber shell, 6. heating chamber thermal insulation layer, 7. heating chamber inner casing, 8. heating chamber, 9. No. three bypass pipes, 10. drain valve, 11. outlet pipe water outlet mouthpieces, 12 outlet pipes, 13. supports, No. 14. bypass pipes, 15. anti-flow electrodes, 16. hot water temperature's sensors, 17. No. two bypass pipes, 18. heat exchanger tubes, 19. connected chambers, 20. heat exchanger tube head end interfaces, 21. heat exchanger tube end interface, 22. magnetic valves, 23. water inlet pipe water inlet interfaces, 24. electrically-controlled valve, 25. check valves, 26. water inlet pipes.
The specific embodiment
Can bear in the cool-bag of tap water pressure, have a columnar structured inner chamber by described container that is axially perpendicular to ground to be separated into three chambers, be heating chamber (8) in described cylinder, and it is outer is accumulation of heat chamber (4); The top of two chambers is interconnected, and connected component is connected chamber (19).The centre on the inside and outside two sides of cylinder is provided with heating chamber thermal insulation layer (6).Heat exchanger tube head end interface (20) is connected with pipe with the high-pressure side of compressor.Heat exchanger tube (18) penetrates from the bottom of container, enter behind accumulation of heat chamber (4) up around cylinder, upper end to cylinder enters heating chamber (8), then around descending, until pass from the lower end of heating chamber (8), by heat exchanger tube end interface (21), be connected with pipe with evaporimeter.Water inlet pipe (26) penetrates from the lower end of heating chamber (8), and the body of 10 centimeter length of having an appointment is vertically placed in the bottom of heating chamber (8).The delivery port of water inlet pipe (26) seals, and has several apertures approaching on the delivery port of sealing perpendicular arc surface, for disperse water filling in heating chamber (8).The water inlet of water inlet pipe is connected with the delivery port of check valve (25), and the water inlet of check valve (25) is connected with a threeway, and a water inlet of check valve (25) is become to two water inlets.Two water inlets are connected with the delivery port of electrically-controlled valve (24) with the delivery port of magnetic valve (22) respectively.The water inlet of the water inlet of magnetic valve (22) and electrically-controlled valve (24) is connected with another threeway respectively, and another interface of this threeway is that water inlet pipe water inlet interface (23) is connected with running water pipe.This junction is provided with initial water temperature temperature sensor and contacts with running water, and described sensor is connected with control panel electric wire.The air inlet of the evaporimeter of described Teat pump boiler but be not limited to inlet end and be provided with temperature sensor, this sensor is connected with control panel electric wire.Magnetic valve (22) is connected with control panel electric wire respectively with electrically-controlled valve (24).Outlet pipe (12) penetrates to accumulation of heat chamber (4) from the bottom of described container.Approaching heating chamber (8) upper end, be provided with a bypass pipe (14) and communicate with it, in described other pipe, anti-flow electrode (15) is being installed, anti-flow electrode (15) is connected with control panel electric wire.A bypass pipe bottom, be provided with No. two bypass pipes (17) and communicate with heating chamber, porose communicate with accumulation of heat chamber (4) on the tube wall of this bypass pipe.Hot water temperature's sensor (16) is installed in No. two bypass pipes (17), and this temperature sensor (16) is connected with control panel electric wire.In the bottom of described container, be provided with No. three logical other pipes (9) and communicate with its inner chamber, drain valve (10) is installed on the outer end of this bypass pipe.The bottom of heating chamber (8) and accumulation of heat chamber (4) is equipped with sewage draining exit.
Claims (6)
1. the heat exchange attemperator of a Teat pump boiler, on the cool-bag that can bear tap water pressure, be provided with water inlet and delivery port, water in described cool-bag directly or indirectly contacts with heat exchanger tube, it is characterized in that: have a structure that the inner chamber of described cool-bag is separated into heating chamber, accumulation of heat chamber and connected chamber, or be separated into heating chamber and accumulation of heat chamber, between heating chamber and accumulation of heat chamber, there is pipeline communication; Heating chamber is communicated with top, accumulation of heat chamber; The heat exchanger tube that connects compressor high-voltage end penetrates from the bottom of described cool-bag, enter accumulation of heat chamber hub disk around up, to top, accumulation of heat chamber, fold into heating chamber, then coil descending, or the back side of being close to the outer wall of described structure is coiled up, at the upper end that approaches described structure, turn back, the back side coiling of inwall of being close to described structure is descending, until pass with evaporimeter and be connected from the bottom of described cool-bag; Water inlet pipe penetrates to heating chamber from the bottom of described cool-bag, and outlet pipe penetrates to accumulation of heat chamber from the bottom of described cool-bag; Between the shell of described structure and inner casing, be provided with thermal insulation layer.
2. the heat exchange attemperator of Teat pump boiler according to claim 1, is characterized in that: approaching heating chamber upper end, be provided with a bypass pipe and communicate with heating chamber, in this bypass pipe, anti-flow electrode is being installed, this anti-flow electrode is connected with control panel electric wire.
3. the heat exchange attemperator of Teat pump boiler according to claim 2, it is characterized in that: the bottom of a described bypass pipe is provided with No. two bypass pipes and communicates with heating chamber, in No. two bypass pipes, be provided with and porosely on hot water temperature's sensor and its tube wall communicate with accumulation of heat chamber, this temperature sensor is connected with control panel electric wire.
4. the heat exchange attemperator of Teat pump boiler according to claim 1, is characterized in that: check valve, magnetic valve and electrically-controlled valve are installed on the water inlet end of described water inlet pipe, and magnetic valve is connected with control panel electric wire respectively with electrically-controlled valve.
5. the heat exchange attemperator of Teat pump boiler according to claim 1, is characterized in that: the water inlet end of described water inlet pipe is provided with initial water temperature temperature sensor and contacts with running water, and this sensor is connected with control panel electric wire.
6. the heat exchange attemperator of Teat pump boiler according to claim 1, is characterized in that: the inlet end of the evaporimeter of described Teat pump boiler is provided with temperature sensor, and this sensor is connected with control panel electric wire.
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| CN201110291404.7A CN102322687B (en) | 2011-09-23 | 2011-09-23 | Heat-exchanging heat-preserving device of heat pump water heater |
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| CN201110291404.7A CN102322687B (en) | 2011-09-23 | 2011-09-23 | Heat-exchanging heat-preserving device of heat pump water heater |
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| CN102322687B true CN102322687B (en) | 2014-03-12 |
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| CN114146436B (en) * | 2021-10-29 | 2023-06-27 | 四川天宇油脂化学有限公司 | Short-range distiller for fatty amide production |
| CN114198908A (en) * | 2021-11-09 | 2022-03-18 | 徐晓蓉 | Air source water heater |
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| DK455083D0 (en) * | 1982-10-08 | 1983-10-03 | Stiebel Eltron Gmbh & Co Kg | STORAGE DEVICE |
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Effective date of registration: 20211220 Address after: 272000 No. 5566 Chongwen Avenue, high tech Zone, Jinan City, Shandong Province Patentee after: Jining high tech Keda Technology Project Service Co.,Ltd. Address before: 434000 2-2-4-1, No. 13, Bibo Road, Shashi District, Jingzhou City, Hubei Province Patentee before: Shu Fangshuo |