Energy-saving central air conditioner with waste heat recovery function

Abstract

The utility model discloses an energy-saving central air conditioner with a waste heat recovery function, and particularly relates to the technical field of central air conditioners, the energy-saving central air conditioner comprises a first recovery box and a second recovery box, the first recovery box is arranged on one side of the second recovery box, and a liquid recovery mechanism is arranged in the first recovery box. A waste heat recovery mechanism is arranged in the second recovery box and comprises a heat recovery pipe arranged in the second recovery box, the heat recovery pipe is made of copper, an anti-corrosion layer is arranged on the surface of the heat recovery pipe, an air inlet pipe is arranged at one end of the heat recovery pipe, and an air outlet pipe is arranged at the other end of the heat recovery pipe. One end of the air inlet pipe penetrates through the first recycling box and extends towards the outside of the first recycling box. The waste heat of the central air conditioner is comprehensively recycled, hot water is prepared and stored according to actual requirements in a full-automatic mode, the requirements of users are met, and therefore the energy-saving effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of central air conditioners, and more specifically, to an energy-saving central air conditioner with waste heat recovery. Background Art

[0002] Central air conditioners are common equipment in our daily life. They are often used in hot summer and cold winter. Air conditioner waste heat refers to the energy that is not used in energy utilization equipment under certain economic and technical conditions. It includes high-temperature waste heat, cooling medium waste heat, waste heat of waste gas and waste water, high-temperature products and slag waste heat, etc.

[0003] At present, energy-saving central air conditioners with waste heat recovery structure directly discharge the internal condensed water through the drain pipe, which is detrimental to the urban environment. Moreover, in the current modern society with scarce water resources, the arbitrary discharge of condensed water causes a waste of water resources and is not conducive to environmental protection.

[0004] After searching, a Chinese patent with publication number CN215062796U discloses a central air-conditioning condensate waste heat recovery energy-saving device. The structure connects the condensate pipe with the first conduit. The condensate reaches the bottom of the filter plate of the filter box through the first conduit. The condensate without impurities after precipitation in the filter box passes through the filter plate and reaches the first frame through the second conduit. When the condensate in the first frame no longer has a temperature difference, it is discharged into the water storage tank through the fifth conduit for recycling. At the same time, the exhaust fan is connected to the water storage tank through the sixth conduit. When the sensor contacts the inductor, the buzzer starts to alarm and reminds people that the condensate in the water storage tank is full and needs to be drained through the drain valve, which effectively reduces the random discharge and waste of condensate, can reuse the condensate, and is more energy-saving and environmentally friendly.

[0005] However, when this structure is actually used, the condensed water is collected and filtered, but heating still requires external heating means. At the same time, when the central air conditioner is cooling, a large amount of heat energy is discharged into the air, thus causing energy waste. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides an energy-saving central air conditioner with waste heat recovery to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An energy-saving central air conditioner with waste heat recovery comprises a first recovery box and a second recovery box, wherein the first recovery box is arranged on one side of the second recovery box, a liquid recovery mechanism is arranged inside the first recovery box, and a waste heat recovery mechanism is arranged inside the second recovery box;

[0009] The waste heat recovery mechanism includes a heat recovery pipe arranged inside the second recovery box, the heat recovery pipe is made of copper, and an anti-corrosion layer is arranged on the surface of the heat recovery pipe; an air inlet pipe is arranged at one end of the heat recovery pipe, and one end of the air inlet pipe passes through the first recovery box and extends to the outside of the first recovery box; an air outlet pipe is arranged at the other end of the heat recovery pipe, and one end of the air outlet pipe passes through the first recovery box and extends to the outside of the first recovery box; solenoid valves are arranged on one side of the air inlet pipe and the air outlet pipe; a first liquid level sensor is arranged inside the second recovery box, a second liquid level sensor is arranged at the bottom of the first liquid level sensor, and a temperature sensor is arranged inside the second recovery box.

[0010] By adopting the above technical solution: in order to realize the comprehensive recovery and utilization of the waste heat of the central air-conditioning, and in full automatic mode, hot water is prepared and stored according to actual needs, meeting the needs of users and saving time and effort.

[0011] As a further description of the above technical solution: the liquid recovery mechanism includes a heat exchanger arranged inside a first recovery box, a filter frame is arranged at the bottom of the heat exchanger, a filter net is connected to the internal movable card of the filter frame, a water inlet pipe is arranged at the top of the first recovery box, a water outlet pipe is arranged on one side of the first recovery box, a first water stop valve is arranged on one side of the water outlet pipe, and a circulating water pump is arranged on one side of the first water stop valve.

[0012] By adopting the above technical solution: in order to collect and filter the condensed water, and reheat it through the waste heat recovery mechanism, the waste heat is fully utilized to achieve energy saving effect.

[0013] As a further description of the above technical solution: a water delivery pipe is arranged on one side of the circulating water pump, one end of the water delivery pipe passes through the second recovery box and extends into the interior of the second recovery box, one side of the first recovery box is connected to a box door through a hinge, and a handle is arranged on one side of the box door.

[0014] By adopting the above technical solution: it is convenient to clean and replace the filter, and it is also convenient to check and repair the internal parts.

[0015] As a further description of the above technical solution: a drain pipe is provided on one side of the second recycling box, a second water stop valve is provided on one side of the drain pipe, a controller is provided on one side of the second recycling box, a cavity is opened inside the first recycling box and the second recycling box, and an insulating layer is provided inside the cavity.

[0016] By adopting the above technical solution: in order to improve the overall thermal insulation effect, heat loss can be effectively prevented.

[0017] Technical effects and advantages of the utility model:

[0018] 1. By setting up a waste heat recovery mechanism, compared with the prior art, the air inlet pipe is connected to the hot air pipe of the external central air conditioner, and then the hot air enters the heat recovery pipe through the air inlet pipe, and the heat of the heat recovery pipe is used to heat the condensed water inside the second recovery box. Since the heat recovery pipe is made of copper, it has the advantages of fast heat conduction speed, high reliability, and easy manufacturing. Since the surface of the copper pipe is easily oxidized, an anti-corrosion layer is set, thereby improving the use effect, extending the service life, fully recovering the waste heat, and reheating the recovered condensed water, greatly improving the energy saving effect;

[0019] 2. By setting up a liquid recovery mechanism, compared with the prior art, the liquid is filtered through the filter net inside the filter frame and then falls into the bottom of the first recovery box, and the circulating water pump is started. At the same time, the first water stop valve is opened to drive the filtered water inside the first recovery box to enter the delivery water pipe through the outlet pipe, and the condensed water inside the delivery water pipe enters the second recovery box, and then the heat from the heat recovery pipe is used to heat the condensed water inside the second recovery box. It is fully automatically controlled, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a schematic diagram of the overall front cross-sectional structure of the utility model.

[0022] Figure 3 It is a schematic diagram of the structure of the waste heat recovery mechanism of the utility model.

[0023] Figure 4 It is a schematic diagram of the structure of the liquid recovery mechanism of the utility model.

[0024] Figure 5 It is a schematic diagram of the overall three-dimensional cross-sectional structure of the utility model.

[0025] The accompanying drawings are marked as follows: 1. first recovery box; 2. second recovery box; 3. heat recovery pipe; 4. air inlet pipe; 5. air outlet pipe; 6. solenoid valve; 7. first liquid level sensor; 8. second liquid level sensor; 9. temperature sensor; 10. heat exchanger; 11. filter frame; 12. filter net; 13. water inlet pipe; 14. water outlet pipe; 15. first water stop valve; 16. circulating water pump; 17. water delivery pipe; 18. box door; 19. handle; 20. drain pipe; 21. second water stop valve; 22. controller; 23. thermal insulation layer. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The embodiments of this application disclose Figure 1-5 An energy-saving central air conditioner with waste heat recovery is shown, comprising a first recovery box 1 and a second recovery box 2, wherein the first recovery box 1 is arranged on one side of the second recovery box 2, a liquid recovery mechanism is arranged inside the first recovery box 1, and a waste heat recovery mechanism is arranged inside the second recovery box 2;

[0028] The waste heat recovery mechanism includes a heat recovery pipe 3 arranged inside the second recovery box 2, the heat recovery pipe 3 is made of copper, the surface of the heat recovery pipe 3 is provided with an anti-corrosion layer, one end of the heat recovery pipe 3 is provided with an air inlet pipe 4, one end of the air inlet pipe 4 passes through the first recovery box 1 and extends to the outside of the first recovery box 1, the other end of the heat recovery pipe 3 is provided with an air outlet pipe 5, one end of the air outlet pipe 5 passes through the first recovery box 1 and extends to the outside of the first recovery box 1, one side of the air inlet pipe 4 and the air outlet pipe 5 are provided with a solenoid valve 6, the interior of the second recovery box 2 is provided with a first liquid level sensor 7, the bottom of the first liquid level sensor 7 is provided with a second liquid level sensor 8, the interior of the second recovery box 2 is provided with a temperature sensor 9, by connecting the air inlet pipe 4 with the hot air pipe of the external central air conditioner, and then allowing the hot air to enter the heat through the air inlet pipe 4 The recovery pipe 3 is made of copper material, which has the advantages of fast heat conduction speed, high reliability and easy manufacturing. Since the surface of the copper pipe is easily oxidized, an anti-corrosion layer is set to improve the use effect and extend the service life. The water inlet pipe 13 is connected to the condensing water pipe of the external central air conditioner, and then the condensed water enters the interior of the first recovery box 1 through the water inlet pipe 13, is filtered through the filter net 12 inside the filter frame 11, and then falls to the bottom of the first recovery box 1, and the circulating water pump 16 is started, and the first water stop valve 15 is opened at the same time, driving the filtered water inside the first recovery box 1 to enter the delivery water pipe 17 through the outlet pipe 14, and the condensed water inside the delivery water pipe 17 enters the interior of the second recovery box 2, and then the condensed water inside the second recovery box 2 is heated by the heat of the heat recovery pipe 3.

[0029] Reference Figure 2-3As shown, the liquid recovery mechanism includes a heat exchanger 10 arranged inside the first recovery box 1, a filter frame 11 is arranged at the bottom of the heat exchanger 10, and a filter screen 12 is connected to the filter frame 11 in an active manner. A water inlet pipe 13 is arranged on the top of the first recovery box 1, a water outlet pipe 14 is arranged on one side of the first recovery box 1, a first water stop valve 15 is arranged on one side of the water outlet pipe 14, and a circulating water pump 16 is arranged on one side of the first water stop valve 15. When the liquid level of the condensed water inside the second recovery box 2 is parallel to the first liquid level sensor 7, the first liquid level sensor 7 transmits a signal to the controller 22, and the circulating water pump 16 is turned off by the controller 22, and then the second recovery box 2 is cooled. The condensed water inside the second recovery tank 2 is continuously heated, and the temperature of the condensed water is detected by the temperature sensor 9. When the set temperature is reached, the temperature sensor 9 transmits a signal to the controller 22, and the second water stop valve 21 is started by the controller 22. The hot water is discharged through the drain pipe 20, and the drain pipe 20 is connected to the external pipe that needs hot water. At the same time, when the hot water inside the second recovery tank 2 is discharged to the bottom, the liquid level is parallel to the second liquid level sensor 8, and the second liquid level sensor 8 transmits a signal to the controller 22. The second water stop valve 21 is controlled to be closed by the controller 22, and the circulating water pump 16 is started. At the same time, the first water stop valve 15 is opened, and then the work can continue.

[0030] Reference Figure 3-4 As shown, a water delivery pipe 17 is provided on one side of the circulating water pump 16, one end of the water delivery pipe 17 passes through the second recovery box 2 and extends to the inside of the second recovery box 2, and a box door 18 is connected to one side of the first recovery box 1 through a hinge, and a handle 19 is provided on one side of the box door 18. When the filter screen 12 needs to be cleaned, the water in the first recovery box 1 is first drained, and then the staff holds the handle 19 and pulls it outward to drive the box door 18 to open, and then the filter screen 12 is pulled out from the inside of the filter frame 11, so that it can be removed for cleaning.

[0031] Reference Figure 5 As shown, a drain pipe 20 is provided on one side of the second recycling box 2, a second water stop valve 21 is provided on one side of the drain pipe 20, a controller 22 is provided on one side of the second recycling box 2, cavities are provided inside the first recycling box 1 and the second recycling box 2, and a heat insulation layer 23 is provided inside the cavity. The heat insulation layer 23 effectively improves the heat insulation effect of the first recycling box 1 and the second recycling box 2, reduces the heat consumption, and further improves the use effect.

[0032] Working principle of the utility model: When the utility model is used, the air inlet pipe 4 is connected to the hot air pipe of the external central air conditioner, and then the hot air enters the heat recovery pipe 3 through the air inlet pipe 4. The heat recovery pipe 3 is set to be copper material, which has the advantages of fast heat conduction speed, high reliability, easy manufacturing, etc. Since the surface of the copper pipe is easy to oxidize, an anti-corrosion layer is set, thereby improving the use effect and extending the service life;

[0033] The water inlet pipe 13 is connected to the condensation water pipe of the external central air conditioner, and then the condensation water enters the first recovery box 1 through the water inlet pipe 13, is filtered through the filter screen 12 inside the filter frame 11, and then falls to the bottom of the first recovery box 1, and the circulating water pump 16 is started, and the first water stop valve 15 is opened at the same time, driving the filtered water inside the first recovery box 1 to enter the delivery water pipe 17 through the water outlet pipe 14, and the condensation water inside the delivery water pipe 17 enters the second recovery box 2, and then the heat of the heat recovery pipe 3 is used to heat the condensation water inside the second recovery box 2;

[0034] When the liquid level of the condensed water in the second recovery tank 2 is parallel to the first liquid level sensor 7, the first liquid level sensor 7 transmits a signal to the controller 22, and the circulating water pump 16 is turned off by the controller 22, and then the condensed water in the second recovery tank 2 is continuously heated, and the temperature of the condensed water is detected by the temperature sensor 9. When the set temperature is reached, the temperature sensor 9 transmits a signal to the controller 22, and the second water stop valve 21 is started by the controller 22, and the hot water is discharged through the drain pipe 20. The drain pipe 20 can be connected to the external pipe that needs hot water. At the same time, when the second When the hot water inside the recovery tank 2 is discharged to the bottom, the liquid surface is parallel to the second liquid level sensor 8, and the second liquid level sensor 8 transmits a signal to the controller 22, and the controller 22 controls the second water stop valve 21 to close, starts the circulating water pump 16, and opens the first water stop valve 15 at the same time, so that the work can continue, and heat is transferred through the liquid medium, so as to improve the heat conduction efficiency and reduce the heat loss. The model of the first liquid level sensor 7 and the second liquid level sensor 8 is CYW11, the model of the temperature sensor 9 is CWDZ28, and the model of the controller 22 is SDVC31-S;

[0035] At the same time, after long-term use, when the filter 12 needs to be cleaned, the water in the first recovery box 1 is first drained, and then the staff holds the handle 19 and pulls it outward to drive the box door 18 to open, and then the filter 12 is pulled out from the inside of the filter frame 11, so that it can be removed for cleaning. In addition, the heat insulation effect of the first recovery box 1 and the second recovery box 2 is effectively improved by the heat insulation layer 23, the heat consumption is reduced, and the use effect is further improved.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An energy-saving central air conditioner with waste heat recovery, comprising a first recovery box (1) and a second recovery box (2), characterized in that: The first recovery box (1) is arranged on one side of the second recovery box (2); a liquid recovery mechanism is arranged inside the first recovery box (1); and a waste heat recovery mechanism is arranged inside the second recovery box (2); The waste heat recovery mechanism comprises a heat recovery pipe (3) arranged inside the second recovery box (2), the heat recovery pipe (3) being made of copper, the surface of the heat recovery pipe (3) being provided with an anti-corrosion layer, one end of the heat recovery pipe (3) being provided with an air inlet pipe (4), one end of the air inlet pipe (4) passing through the first recovery box (1) and extending to the outside of the first recovery box (1), the other end of the heat recovery pipe (3) being provided with an air outlet pipe (5), one end of the air outlet pipe (5) passing through the first recovery box (1) and extending to the outside of the first recovery box (1), one side of each of the air inlet pipe (4) and the air outlet pipe (5) being provided with a solenoid valve (6), the interior of the second recovery box (2) being provided with a first liquid level sensor (7), the bottom of the first liquid level sensor (7) being provided with a second liquid level sensor (8), and the interior of the second recovery box (2) being provided with a temperature sensor (9).

2. The energy-saving central air conditioner with waste heat recovery according to claim 1 is characterized in that: The liquid recovery mechanism comprises a heat exchanger (10) arranged inside a first recovery box (1), a filter frame (11) is arranged at the bottom of the heat exchanger (10), and a filter screen (12) is movably connected inside the filter frame (11).

3. The energy-saving central air conditioner with waste heat recovery according to claim 1 is characterized in that: A water inlet pipe (13) is arranged at the top of the first recovery box (1), a water outlet pipe (14) is arranged at one side of the first recovery box (1), a first water stop valve (15) is arranged at one side of the water outlet pipe (14), and a circulating water pump (16) is arranged at one side of the first water stop valve (15).

4. The energy-saving central air conditioner with waste heat recovery according to claim 3 is characterized in that: A water delivery pipe (17) is provided on one side of the circulating water pump (16), and one end of the water delivery pipe (17) passes through the second recovery box (2) and extends toward the interior of the second recovery box (2).

5. The energy-saving central air conditioner with waste heat recovery according to claim 1 is characterized in that: One side of the first recovery box (1) is connected to a box door (18) via a hinge, and one side of the box door (18) is provided with a handle (19).

6. The energy-saving central air conditioner with waste heat recovery according to claim 1 is characterized in that: A drainage pipe (20) is provided on one side of the second recovery box (2), a second water stop valve (21) is provided on one side of the drainage pipe (20), and a controller (22) is provided on one side of the second recovery box (2).

7. The energy-saving central air conditioner with waste heat recovery according to claim 1 is characterized in that: The first recovery box (1) and the second recovery box (2) are both provided with cavities inside, and a heat insulation layer (23) is provided inside the cavities.

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