CN116697419A - A multifunctional rapid heating waste heat recovery device - Google Patents

Abstract

The present invention relates to the field of waste heat recovery from gas stoves, in particular to a multi-functional rapid heating waste heat recovery device, which includes a hot water collection tank, a warm water tank, a heating water tank, a heat exchanger, a drainage control device, and an air duct; the warm water The water tank is fixedly installed above the hot water collection tank, and the upper end of the warm water tank is provided with a water inlet pipe; the present invention guides out the water vapor in the hot water collection tank by setting a spiral exhaust pipe, and heats the water in the warm water tank, so that The whole waste heat recovery device can provide both hot water and warm water, and through the pre-heating effect of the warm water tank, when the warm water enters the heating water tank for heating, the heating speed of the water in the heating water tank is greatly improved; Water vapor is used to control the timely discharge of water in the heating water tank, so that the structure of the drainage control device is simpler, the cost is lower, and the effect is more stable.

Description

A multifunctional rapid heating waste heat recovery device

technical field

The invention relates to the technical field of waste heat recovery of gas stoves, in particular to a multi-functional rapid heating waste heat recovery device.

Background technique

As the country pays more and more attention to environmental protection, saving energy, reducing carbon emissions, and reducing pollutant emissions have become the main goals of the development of various energy-consuming industries. In recent years, with the gradual improvement of people's living standards, the catering industry has gained However, the catering industry consumes a lot of energy every day and emits a lot of waste heat and smoke and kitchen waste. The fuel consumption in the cooking process, the daily drinking water in the kitchen and the hot water for washing are constantly increasing. consumes energy and emits carbon dioxide;

In order to reduce carbon emissions and energy loss in existing commercial gas stoves, the heat in the high-temperature flue gas (about 500°C to 600°C in the drainage control device) generated during the combustion process of the stove is usually recycled through the heat exchange tube, such as It is used to heat water to provide hot water or provide steam, etc. However, in the existing waste heat recovery and utilization devices, the heat is directly exchanged for water through heat exchange tubes, and in order to heat more water, the water tank is usually set up very large. There is a lot of water, which causes the water in the water tank to be boiled, and the heating time required is very long, so that when the stove starts to work, when there is a demand for hot water, the water tank cannot provide hot water in time .

Contents of the invention

Therefore, the present invention is made in view of the above problems. The purpose of the present invention is to make use of the pressure of water vapor to discharge the hot water in time after the heating water tank finishes heating the water by arranging a small heating water tank and a drainage control device, and then Add the water in the warm water tank into the heating water tank to solve the problem that the existing waste heat recovery device cannot provide hot water in time when it just starts working. The present invention achieves the above purpose through the following technical solutions:

A multi-functional rapid heating waste heat recovery device, including a hot water collection tank, a warm water tank, a heating water tank, a heat exchanger, a drainage control device, and an air duct; the warm water tank is fixedly installed above the hot water collection tank, and the warm water tank The upper end of the heating water tank is provided with a water inlet pipe; the heating water tank is fixedly installed inside the warm water tank, and the upper end cover of the heating water tank is provided with an exhaust pipe one and an exhaust pipe two, and the exhaust pipe one is connected with the heating water tank A pressure control valve is provided at the internal communication position; a drainage port and a pressure valve port are symmetrically arranged at the bottom of the heating water tank, and the heat exchanger is fixedly installed inside the heating water tank; the heat exchanger includes: a heat exchange core , a smoke inlet pipe and a smoke exhaust pipe; the smoke exhaust pipe and the smoke inlet pipe are respectively arranged at the upper and lower ends of the heat exchange core; the heat exchange core includes: a heat exchange pipe, a smoke distribution tray and a diversion protrusion; The upper and lower ends of the heat exchange tube are fixedly connected with the smoke distribution tray; the middle part of the smoke distribution tray is provided with a diversion protrusion; the drainage control device is fixedly installed on one side of the warm water tank, and the drainage control device includes: a steam cylinder, Sliding cylinder and valve stem, wherein the steam cylinder is fixedly installed on the side wall of the warm water tank near the side of the exhaust pipe; the steam cylinder communicates with the exhaust pipe on the heating water tank, and the sliding cylinder is fixedly installed It is located directly below the steam cylinder near the drain port, and one end of the slide cylinder is connected to the drain port, and the other end is connected to the inside of the hot water collection tank; the upper end of the valve stem is provided with an air piston, and the lower end is provided with a control piston. The integral sliding connection is in the interior of the steam cylinder and the sliding cylinder, wherein the air piston is located in the steam cylinder and the control piston is located in the sliding cylinder.

Preferably, the opening and closing of the water inlet pipe is controlled by a solenoid valve.

Preferably, an exhaust pipe is provided inside the warm water tank, and the exhaust pipe is a spiral pipe body, and the inside of the exhaust pipe can communicate with the inside of the hot water collection tank.

Preferably, the lower end of the smoke inlet pipe communicates with the interior of the cooker; the upper end of the smoke exhaust pipe communicates with the outside.

Preferably, a steam box is provided on the left side of the hot water collection tank, and the top of the steam box communicates with the exhaust pipe through an air duct.

Preferably, a valve is provided at the connection between the air guide pipe and the exhaust pipe.

Beneficial effects of the present invention:

1. In the present invention, the heating water tank is designed to have a smaller volume, and then the heated water is discharged from the heating water tank in time through the drainage control device, and the water of the warm water tank is added to the heating water tank, so that the heating water tank starts to work It can quickly complete the heating of small-capacity water in a short time and provide it to the outside in time;

2. In the present invention, the water vapor in the hot water collection tank is exported by setting a spiral exhaust pipe, and the water in the warm water tank is heated, so that the whole waste heat recovery device can provide both hot water and warm water, and through the warm water tank The pre-heating effect makes the warm water enter the heating water tank for heating, which greatly improves the heating speed of the water in the heating water tank;

3. The present invention uses the steam generated by the heating water tank to control the timely discharge of water in the heating water tank, so that the structure of the drainage control device is simpler, the cost is lower, and the effect is more stable.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of a multi-functional rapid heating waste heat recovery device of the present invention.

Fig. 2 is a partial structural schematic diagram of a multifunctional rapid heating waste heat recovery device of the present invention.

Fig. 3 is an exploded schematic diagram of the structure of a heat exchanger in a multifunctional rapid heating waste heat recovery device of the present invention.

Fig. 4 is a top view of a multifunctional rapid heating waste heat recovery device of the present invention.

Fig. 5 is a sectional view along line A-A in Fig. 4 .

Fig. 6 is a sectional view along line B-B in Fig. 4 .

Description of drawings: 100, hot water collection tank; 200, warm water tank; 210, water inlet pipe; 220, exhaust pipe; 300, heating water tank; 310, exhaust pipe one; 311, pressure control valve; 320, exhaust pipe 2; 330, drain port; 340, pressure valve port; 400, heat exchanger; 410, heat exchange core; 411, heat exchange tube; 412, smoke distribution tray; 413, diversion protrusion; 420, smoke inlet pipe; 430, smoke exhaust pipe; 500, drainage control device; 510, steam cylinder; 520, sliding cylinder; 530, valve stem; 531, gas piston; 532, control piston; 600, air guide pipe; 610, valve; 700, steam box .

Detailed ways

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention can also be implemented in various forms, so the present invention is not limited to the embodiments described hereinafter. In addition, in order to describe the present invention more clearly, there is no Connected parts will be omitted from the drawings;

As shown in Figure 1, a waste heat recovery device for multifunctional rapid heating, comprising: a hot water collection tank 100, a warm water tank 200, a heating water tank 300, a heat exchanger 400, a drainage control device 500, an air duct 600, and a steam box 700 ;

As shown in Fig. 1 to Fig. 6, the hot water collection tank 100 is a box structure, and the interior has a thermal insulation inner wall that can accommodate and keep a certain amount of hot water. Above, the upper end of the warm water tank 200 is provided with a water inlet pipe 210, and the water inlet pipe 210 is opened and closed by a solenoid valve, and an exhaust pipe 220 is also provided inside the warm water tank 200, the exhaust pipe 220 is a spiral pipe body, and the exhaust pipe 220 The inside of the pipe 220 can communicate with the inside of the hot water collection tank 100, and the exhaust pipe 220 can discharge the water vapor generated inside the hot water collection tank 100;

The heating water tank 300 is fixedly installed inside the warm water tank 200. The heating water tank 300 is a cylindrical shell structure as a whole. The upper end cover of the heating water tank 300 is provided with an exhaust pipe 1 310 and an exhaust pipe 2 320. The exhaust pipe One 310 and exhaust pipe two 320 can communicate with the inside of the heating water tank 300, and the exhaust pipe one 310 is also provided with a pressure control valve 311 at the position communicating with the inside of the heating water tank 300, and the pressure control valve 311 is only in the heating water tank The 300 will only open when the internal pressure reaches a certain threshold. The bottom of the heating water tank 300 is symmetrically provided with a drain port 330 and a pressure valve port 340. The drain port 330 communicates with the heating water tank 300 to discharge the water inside the heating water tank 300. The valve port 340 is a valve controlled by pressure. When the pressure difference inside and outside the tank wall of the heating water tank 300 reaches a specified value, the pressure valve port 340 will open and connect the heating water tank 300 with the warm water tank 200, so that the water in the warm water tank 200 enters the heating tank. In the water tank 300, the heat exchanger 400 is fixedly installed inside the heating water tank 300. The heat exchanger 400 includes: a heat exchange core 410, a smoke inlet pipe 420 and a smoke exhaust pipe 430; wherein the heat exchange core 410 includes: a heat exchange tube 411, the smoke distribution tray 412 and the diversion protrusion 413; the heat exchange tube 411 is an internal hollow pipe, the number is four, and it is evenly fixed and installed on the smoke distribution tray 412 along the circumferential direction, and the inside of the smoke distribution tray 412 There is a guide protrusion 413, which can make the smoke entering the smoke distribution tray 412 enter each heat exchange tube 411 more smoothly and evenly, and the smoke inlet tube 420 is fixedly installed on the heat exchange core 410 One end of the smoke inlet pipe 420 communicates with the inside of the smoke distribution tray 412, and the other end communicates with the interior of the cooking stove (not shown in the figure). The smoke inlet pipe 420 can discharge the smoke generated in the cooking stove into the smoke distribution tray In 412, the smoke exhaust pipe 430 is fixedly installed on the other end of the heat exchange core 410, and the smoke exhaust pipe 430 can discharge the smoke inside the heat exchange core 410;

As shown in Figures 4-5, the drainage control device 500 is fixedly installed on one side of the warm water tank 200, and the drainage control device 500 includes: a steam cylinder 510, a sliding cylinder 520 and a valve stem 530; On the side wall of the water tank 200 near the side of the exhaust pipe 310, and the steam cylinder 510 can communicate with the inside of the exhaust pipe 310 on the heating water tank 300, and the sliding cylinder 520 is fixedly installed directly below the steam cylinder 510 near the drain port 330, and one end of the slide cylinder 520 communicates with the drain port 330, and the other end communicates with the inside of the hot water collection tank 100. The upper end of the valve stem 530 is provided with a gas piston 531 and the lower end is provided with a control piston 532. The valve stem 530 is integrally Movably installed inside the steam cylinder 510 and the sliding cylinder 520, wherein the air piston 531 is located in the steam cylinder 510, and the control piston 532 is located in the sliding cylinder 520;

As shown in Figure 2, one end of the air guide pipe 600 is connected to the second exhaust pipe 320 to communicate with the second exhaust pipe 320, and the other end is connected to the steam box 700 to communicate with the interior of the steam box 700, and the air guide pipe 600 is connected to the exhaust pipe 700. A valve 610 is also provided at the joint of the air pipe 2 320, and the valve 610 can control the communication between the exhaust pipe 2 320 and the air guide pipe 600. The steam box 700 is a steam box fixedly installed at one end of the warm water tank 200. Under the control of the valve 610, the water vapor in the heating water tank 300 is guided into the steam box 700, and the high-temperature water vapor in the steam box 700 can heat the food.

The working principle of the present invention:

Tap water enters the warm water tank 200 through the water inlet pipe 210, and then enters the heating water tank 300 through the pressure valve port 340 on the heating water tank 300. As the water continuously enters the heating water tank 300, the pressure difference between the two ends of the pressure valve port 340 gradually increases. When the water level in the warm water tank 200 reaches the specified position, the water inlet pipe 210 closes the water inlet, and the high-temperature flue gas generated by the combustion of natural gas in the stove enters the boiler through the smoke inlet pipe 420. heat core 410, then flows through each heat exchange tube 411 in the heat exchange core 410, and finally is discharged through the smoke exhaust pipe 430. When the high-temperature flue gas flows through the heat exchange tube 411, it will transfer heat to the heating water tank 300 Water, when the water in the heating water tank 300 starts to boil, a large amount of water vapor will be generated in a short time in the heating water tank 300 until the pressure of the water vapor reaches the opening threshold of the pressure control valve 311, the pressure control valve 311 opens, and the water vapor Enter the steam cylinder 510 on the drainage control device 500 through the exhaust pipe 1 310, and the valve rod 530 starts to move upward under the pressure of the water vapor until the control piston 532 opens the drain port 330, and the hot water in the water tank 300 starts to be heated. It flows into the sliding cylinder 520 through the water outlet 330, and is discharged into the hot water collection tank 100 at the lower end through the sliding cylinder 520. When the hot water in the heating water tank 300 starts to be discharged, the water vapor pressure at the upper end of the heating water tank 300 decreases. After the pressure on the pressure control valve 311 is lower than the opening threshold, the pressure control valve 311 is closed, and the valve stem 530 stops moving until the hot water in the heating water tank 300 is almost exhausted, and the water level sensor at the bottom of the heating water tank 300 senses that the water level has reached After the water level is specified, the water inlet pipe 210 will be opened, and the cold water in the water inlet pipe 210 will directly flow to the pressure control valve 311 and the exhaust pipe 1 310 at the lower end. Since the water in the water inlet pipe 210 has a cooling effect, the pressure control valve 311 The water vapor in the exhaust pipe 310 starts to liquefy when it is cold, the water vapor pressure in the steam cylinder 510 starts to drop, and the valve stem 530 will start to move downward under the action of gravity until the water outlet 330 is closed and then stops moving. Now because the water level in the warm water tank 200 rises, the internal and external pressure difference of the pressure valve port 340 increases, reaching the opening threshold of the pressure valve port 340, the pressure valve port 340 will open the water in the warm water tank 200 and will enter the heating again. In the water tank 300, since the smoke inlet pipe 420 passes through the hot water collection tank 100, the smoke inlet pipe 420 will insulate the hot water in the hot water collection tank 100, and the water produced by the hot water in the hot water collection tank 100 The steam will flow out through the exhaust pipe 220, and the water vapor will heat the water in the warm water tank 200 during the process of flowing through the exhaust pipe 220. Since the water in the warm water tank 200 is relatively large and often circulates into cold water, therefore The temperature of the water in the warm water tank 200 will not be too high, so the warm water tank 200 can provide warm water to the outside world. When the food needs to be heated, the valve 610 is manually opened, and the water vapor generated in the heating water tank 300 will start to flow from the exhaust pipe. 2 320 enters the air duct 600, and flows into the steamer 700 from the air duct 600, and starts to heat the food in the steamer 700. The water level sensor senses that it will also open the water intake, and then the pressure valve port 340 is opened, and water is added to the heating water tank 300 in time.

Claims (10)

1. A waste heat recovery device for multifunctional rapid heating, comprising: a hot water collection tank (100), a warm water tank (200), a heating water tank (300), a heat exchanger (400), and a drainage control device (500); It is characterized in that: the warm water tank (200) is fixedly installed above the hot water collection tank (100); the heating water tank (300) is fixedly installed inside the warm water tank (200); the heat exchanger (300) is fixedly installed inside the heating water tank (300). 400); the drainage control device (500) is fixedly installed on one side of the warm water tank (200); The end cover of the heating water tank (300) is provided with an exhaust pipe one (310) and an exhaust pipe two (320), and the exhaust pipe one (310) is provided with a pressure control valve at the internal communication with the heating water tank (300) (311); the heat exchanger (400) includes a heat exchange core (410), a smoke inlet pipe (420) and a smoke exhaust pipe (430); the smoke exhaust pipe (430) and the smoke inlet pipe (420) respectively It is arranged at the upper and lower ends of the heat exchange core (410); the drainage control device (500) includes a steam cylinder (510), a sliding cylinder (520) and a valve stem (530); the steam cylinder (510) is fixedly installed in the warm water On the side wall near the exhaust pipe one (310) on the water tank (200); the steam cylinder (510) communicates with the exhaust pipe one (310) on the heating water tank (300); the slide cylinder (520) is fixedly installed On the position directly below the steam cylinder (510) close to the drain port (330), one end of the slide cylinder (520) communicates with the drain port (330), and the other end communicates with the inside of the hot water collection tank (100). 2. A multi-functional rapid heating waste heat recovery device according to claim 1, characterized in that: the upper end of the warm water tank (200) is provided with a water inlet pipe (210); the lower part of the heating water tank (300) is symmetrically arranged There is a drain port (330) and a pressure valve port (340). 3. A multi-functional rapid heating waste heat recovery device according to claim 2, characterized in that: the heat exchange core (410) includes a heat exchange tube (411), a smoke distribution tray (412) and a diversion convex (413); the upper and lower ends of the heat exchange tube (411) are fixedly connected to the smoke distribution tray (412); the middle part of the smoke distribution tray (412) is provided with a guide protrusion (413). 4. A multifunctional rapid heating waste heat recovery device according to claim 3, characterized in that: the valve stem (530) is provided with an air piston (531) at the upper end and a control piston (532) at the lower end. 5. A multifunctional rapid heating waste heat recovery device according to claim 4, characterized in that: the valve rod (530) is integrally slidably connected in the interior of the steam cylinder (510) and the sliding cylinder (520), The air piston (531) is located in the steam cylinder (510) and the control piston (532) is located in the slide cylinder (520). 6. A multi-functional rapid heating waste heat recovery device according to claim 5, characterized in that: the lower end of the smoke inlet pipe (420) communicates with the interior of the cooker; the upper end of the smoke exhaust pipe (430) communicates with the Communicate with the outside world. 7. A multifunctional rapid heating waste heat recovery device according to claim 6, characterized in that: the water inlet pipe (210) is opened and closed by a solenoid valve. 8. A multi-functional rapid heating waste heat recovery device according to claim 7, characterized in that: the inside of the warm water tank (200) is provided with an exhaust pipe (220), and the exhaust pipe (220) is a spiral The pipe body, the inside of the exhaust pipe (220) can communicate with the inside of the hot water collection tank (100). 9. A multifunctional rapid heating waste heat recovery device according to claim 8, characterized in that: a steam box (700) is provided on the left side of the hot water collection box (100). 10. A multi-functional rapid heating waste heat recovery device according to claim 9, characterized in that: the top of the steamer (700) is connected to the second exhaust pipe (320) through the air guide pipe (600), and the guide A valve (610) is provided at the joint between the air pipe (600) and the second exhaust pipe (320).