Energy-saving cold and hot combined heat supply recovery device

By designing coaxially distributed wastewater chambers, recovery chambers, and exhaust gas chambers, and configuring stirring plates and exhaust gas circulation components, the problems of low heat recovery efficiency and lack of synergistic utilization of wastewater and exhaust gas heat in existing devices have been solved, achieving efficient energy utilization and environmental protection.

CN224230782UActive Publication Date: 2026-05-12JINAN CITY HEATING & COOLING COMBINED SUPPLY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JINAN CITY HEATING & COOLING COMBINED SUPPLY CO LTD
Filing Date
2025-06-11
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Existing heat recovery devices typically only recover heat from a single medium, resulting in low efficiency. Furthermore, the waste heat in wastewater and exhaust gas cannot be utilized in synergy, leading to low energy utilization and environmental pollution.

Method used

Design an energy-saving combined cooling and heating heat recovery device, which adopts a coaxially distributed wastewater chamber, recovery chamber and exhaust gas chamber, and is equipped with a stirring plate and exhaust gas circulation components. The wastewater circulation components and exhaust gas circulation components realize efficient circulation and heat exchange between wastewater and exhaust gas, thereby enhancing fluidity and heat exchange effect.

Benefits of technology

It significantly improves heat recovery efficiency, enables synergistic heat recovery from wastewater and exhaust gas, increases energy utilization, and reduces environmental pollution.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of heat supply recovery devices, in particular to an energy-saving cold and hot combined heat supply recovery device. Comprising a recycling barrel, the recycling barrel is sequentially provided with a first partition layer and a second partition layer from inside to outside, the first partition layer and the second partition layer divide the recycling barrel into a waste water cavity, a recycling cavity and a waste gas cavity which are coaxially distributed, the top of the recycling cavity is rotationally connected with an adjusting disc, and the adjusting disc is connected with a plurality of stirring plates; the stirring plate can push water in the recovery cavity; a waste gas circulation assembly is arranged in the waste gas cavity, and a waste water circulation assembly is arranged in the axis direction of the waste water cavity. By arranging the waste water cavity, the recovery cavity and the waste gas cavity which are coaxially distributed and arranging the stirring plate and the waste gas circulation assembly, efficient circulation and heat exchange of waste water and waste gas are achieved, and the heat recovery efficiency is remarkably improved.
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Description

Technical Field

[0001] This utility model relates to the technical field of heat recovery devices, specifically an energy-saving combined cooling and heating heat recovery device. Background Technology

[0002] With the increasing demand for energy conservation and emission reduction, combined cooling and heating systems have been widely used in the field of HVAC energy conservation technology. Heat recovery from combined cooling and heating systems can effectively reduce heat waste.

[0003] Traditional heat recovery devices typically only recover heat from a single medium (such as wastewater or exhaust gas), resulting in low efficiency. Existing heat recovery equipment often has a simple structure and lacks an efficient heat exchange mechanism, leading to insufficient heat recovery and low energy utilization. Furthermore, the waste heat in wastewater and exhaust gas is not utilized in tandem, resulting in energy waste. Therefore, there is an urgent need for an energy-saving device capable of simultaneously treating wastewater and exhaust gas and achieving efficient heat recovery to improve energy efficiency and reduce environmental pollution. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides an energy-saving combined cooling and heating heat recovery device.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an energy-saving combined cooling and heating heat recovery device, including a recovery tank, wherein the recovery tank is provided with a first partition layer and a second partition layer from the inside to the outside, the first partition layer and the second partition layer divide the recovery tank into a wastewater chamber, a recovery chamber and a waste gas chamber distributed coaxially, an adjustment plate is rotatably connected to the top of the recovery chamber, and the adjustment plate is connected to a plurality of stirring plates, the stirring plates can push the water inside the recovery chamber;

[0006] The waste gas chamber is equipped with a waste gas circulation assembly, and the waste water chamber is equipped with a waste water circulation assembly along its axial direction. The waste water circulation assembly includes a water suction plate, a water pump, and a distribution pipe. The water suction plate is located at the bottom of the waste water chamber and has several water suction holes arranged in a circumferential array. The water pump is connected between the distribution pipe and the water suction holes of the water suction plate, and the upper end of the distribution pipe is located at the upper part of the waste water chamber.

[0007] As an optimization, the inside of the recycling bin is provided with several air guide protrusions, which are distributed along the height direction of the recycling bin, and the two sides of the air guide protrusions converge towards the middle to form an air guide slope, and an air guide channel is formed between the air guide protrusions and the second partition layer;

[0008] The central recess of the air guide protrusion forms a first receiving groove, and the second partition layer is recessed inward to form a plurality of second receiving grooves. The first receiving groove and the second receiving groove are arranged opposite to each other to form a circular operating space, and the exhaust gas recirculation component is located in the operating space.

[0009] As an optimization, the first partition layer protrudes outward to form a plurality of first protrusions, and the plurality of first protrusions are arranged opposite to the inner side of the plurality of second receiving grooves to form a water flow acceleration port;

[0010] The water flow acceleration port can accommodate the passage of the stirring plate, and the width of the stirring plate is set along the diameter direction of the recycling tank.

[0011] As an optimization, the recycling bin is equipped with a first drive motor, the output shaft of the first drive motor is equipped with a drive gear, the adjusting disc is equipped with a connecting gear ring, and the drive gear meshes with the connecting gear ring.

[0012] The top of the recovery chamber is provided with a water inlet, and the setting of the water inlet does not affect the operation of the stirring plate.

[0013] As an optimization, the exhaust gas recirculation assembly includes a stirring rod and a plurality of stirring blades fixedly disposed therewith. The stirring rod is arranged along the height direction of the recycling tank, and a second drive motor is disposed at at least one end of the stirring rod.

[0014] As an optimization, the recovery chamber is located between the wastewater chamber and the waste gas chamber. The bottom of the wastewater chamber is provided with a wastewater inlet and the top of the wastewater chamber is provided with a wastewater outlet. The top of the waste gas chamber is provided with a waste gas inlet and the bottom of the waste gas chamber is provided with a waste gas outlet. The bottom of the recovery chamber is provided with a drain outlet.

[0015] As an optimization, several of the suction holes pass through the axis of the suction plate, the water inlet end of the water pump is sealed to the suction plate, and the diameter of the suction plate is larger than the diameter of the distribution pipe and smaller than the inner diameter of the wastewater chamber.

[0016] The beneficial effects of this plan are as follows:

[0017] By setting up coaxially distributed wastewater chamber, recovery chamber and exhaust gas chamber, and configuring a stirring plate and exhaust gas circulation assembly, efficient circulation and heat exchange of wastewater and exhaust gas are achieved, significantly improving heat recovery efficiency.

[0018] The wastewater circulation components (suction plate, water pump, distribution pipe) and the exhaust gas circulation components (stirring rod, stirring blade) can promote the efficient circulation of wastewater and exhaust gas respectively, improve heat exchange efficiency, and the design of air guide protrusions, air guide channels and water flow acceleration ports enhances the fluidity and heat exchange effect of exhaust gas and wastewater. Attached Figure Description

[0019] Figure 1 This is an axonometric view of the present invention.

[0020] Figure 2 This is a schematic diagram of the bottom axial side of the present invention.

[0021] Figure 3 This is a schematic diagram of the front view of this utility model.

[0022] Figure 4 This utility model Figure 3 A schematic diagram of the AA cross-section structure.

[0023] Figure 5 This is an isometric view of the wastewater recycling component of this utility model.

[0024] The components are as follows: 1. Recycling bin; 2. First partition layer; 3. Second partition layer; 4. Wastewater chamber; 5. Recycling chamber; 6. Exhaust gas chamber; 7. Adjustment plate; 8. Stirring plate; 9. Suction plate; 10. Water pump; 11. Distribution pipe; 12. Suction hole; 13. Air guide protrusion; 14. First receiving groove; 15. Second receiving groove; 16. First protrusion; 17. Water flow acceleration port; 18. First drive motor; 19. Drive gear; 20. Connecting gear ring; 21. Water inlet; 22. Stirring rod; 23. Stirring blade; 24. Second drive motor; 25. Exhaust gas inlet; 26. Exhaust gas outlet; 27. Wastewater inlet; 28. Wastewater outlet. Detailed Implementation

[0025] like Figures 1-5 As shown, an energy-saving combined cooling and heating heat recovery device includes a recovery tank 1. The recovery tank 1 is provided with a first partition layer 2 and a second partition layer 3 from the inside out. The first partition layer 2 and the second partition layer 3 divide the recovery tank 1 into a wastewater chamber 4, a recovery chamber 5 and a waste gas chamber 6 distributed coaxially. The top of the recovery chamber 5 is rotatably connected to an adjusting plate 7. The adjusting plate 7 is connected to a plurality of stirring plates 8. The stirring plates 8 can push the water inside the recovery chamber 5.

[0026] The waste gas chamber 6 is equipped with a waste gas circulation assembly, and the waste water chamber 4 is equipped with a waste water circulation assembly along its axial direction. The waste water circulation assembly includes a water suction plate 9, a water pump 10, and a distribution pipe 11. The water suction plate 9 is located at the bottom of the waste water chamber 4 and has a plurality of water suction holes 12 arranged in a circular array. The water pump 10 is connected between the distribution pipe 11 and the water suction holes 12 of the water suction plate 9. The upper end of the distribution pipe 11 is located at the upper part of the waste water chamber 4.

[0027] Wastewater chamber 4, recovery chamber 5 and waste gas chamber 6 are coaxially arranged, which can simultaneously recover heat from wastewater and waste gas. The heat exchange effect is improved through the efficient flow of heat exchange media in the waste gas circulation component and the wastewater circulation component.

[0028] The recycling bin 1 can be made of carbon steel with anti-corrosion coating, the first separation layer 2 can be made of aluminum alloy or copper alloy plate to ensure thermal conductivity, and the second separation layer 3 can be made of stainless steel composite plate to ensure thermal conductivity while having good corrosion resistance.

[0029] like Figure 4 As shown, the inside of the recycling bin 1 is provided with a plurality of air guide protrusions 13. The air guide protrusions 13 are distributed along the height direction of the recycling bin 1, and the two sides of the air guide protrusions 13 converge toward the middle to form an air guide slope. An air guide channel is formed between the air guide protrusions 13 and the second partition layer 3.

[0030] The central recess of the air guide protrusion 13 forms a first receiving groove 14, and the second partition layer 3 is recessed inward to form a plurality of second receiving grooves 15. The first receiving groove 14 and the second receiving grooves 15 are arranged opposite to each other to form a circular operating space, and the exhaust gas recirculation component is located in the operating space.

[0031] The air guide protrusion 13 is designed to create a relatively narrow air guide channel at this location. When the exhaust gas flows through this location, the air pressure increases, which helps to improve the circulation speed of the exhaust gas. The exhaust gas circulation component further improves the circulation efficiency of the exhaust gas, allowing the exhaust gas that has not undergone heat exchange to circulate efficiently and improving heat exchange efficiency.

[0032] like Figure 4 As shown, the first partition layer 2 protrudes outward to form a plurality of first protrusions 16, and the plurality of first protrusions 16 are arranged opposite to the inner side of the plurality of second receiving grooves 15 to form a water flow acceleration port 17.

[0033] The water flow acceleration port 17 can accommodate the passage of the stirring plate 8, and the width of the stirring plate 8 is set along the diameter direction of the recycling tank 1.

[0034] The width of the water flow acceleration port 17 is slightly larger than the width of the stirring plate 8, so that when the stirring plate 8 passes through the position, it accelerates and pushes the water flow at that position. The water flow acceleration port 17 is located in the middle layer of the recovery chamber 5. The stirring plate 8 can push the water in the middle layer to circulate inward and outward, avoiding the problem that the surface water is heat exchanged while the temperature of the inner water is low, and further promoting heat exchange.

[0035] like Figure 1 and Figure 2As shown, the recycling bin 1 is equipped with a first drive motor 18, the output shaft of the first drive motor 18 is equipped with a drive gear 19, the adjusting disk 7 is equipped with a connecting gear ring 20, and the drive gear 19 is meshed with the connecting gear ring 20.

[0036] The top of the recovery chamber 5 is provided with a water inlet 21, and the setting of the water inlet 21 does not affect the operation of the stirring plate 8.

[0037] like Figure 1 and Figure 4 As shown, the waste gas recirculation assembly includes a stirring rod 22 and a plurality of stirring blades 23 fixedly disposed therewith. The stirring rod 22 is arranged along the height direction of the recycling tank 1, and at least one end of the stirring rod 22 is provided with a second drive motor 24.

[0038] like Figure 1 , Figure 2 and Figure 4 As shown, the recycling chamber 5 is located between the wastewater chamber 4 and the waste gas chamber 6. The bottom of the wastewater chamber 4 is provided with a wastewater inlet 27 and the top of the wastewater chamber 4 is provided with a wastewater outlet 28. The top of the waste gas chamber 6 is provided with a waste gas inlet 25 and the bottom of the waste gas chamber 6 is provided with a waste gas outlet 26. The bottom of the recycling chamber 5 is provided with a drain outlet.

[0039] like Figure 4 and Figure 5 As shown, several water suction holes 12 pass through the axis of the water suction plate 9, the water inlet end of the water pump 10 is sealed to the water suction plate 9, and the diameter of the water suction plate 9 is larger than the diameter of the distribution pipe 11 and smaller than the inner diameter of the wastewater chamber 4.

[0040] The suction plate 9 can circulate water from the bottom and outer layer upwards and towards the middle by suction, pushing the inner wastewater to the outer layer and improving heat exchange efficiency.

[0041] This energy-saving combined cooling and heating heat recovery device achieves synergistic heat recovery from wastewater and waste gas through coaxially distributed wastewater chamber 4, recovery chamber 5, and waste gas chamber 6. The specific operation process is as follows:

[0042] Wastewater enters wastewater chamber 4 from wastewater inlet 27, waste gas enters waste gas chamber 6 from waste gas inlet 25, and heat exchange water enters recovery chamber 5 from water inlet 21.

[0043] Heat exchange water can absorb heat from both waste gas and wastewater simultaneously.

[0044] During the wastewater circulation process, the wastewater is circulated through the wastewater circulation component, causing the inner layer of wastewater to flow to the outer layer, which promotes the efficient recovery of heat from the wastewater.

[0045] At the same time, the exhaust gas is efficiently circulated through the exhaust gas recirculation component, which promotes the efficient recovery of heat from the exhaust gas.

[0046] The heat exchange water is efficiently stirred by the stirring plate 8, which promotes the flow of the inner heat exchange water to the inside and outside, further improving the heat exchange efficiency.

[0047] The above-described specific embodiments are merely specific examples of this utility model. The patent protection scope of this utility model includes, but is not limited to, the product form and style of the above-described specific embodiments. Any energy-saving combined cooling and heating heat recovery device that conforms to the claims of this utility model, and any appropriate changes or modifications made to it by those skilled in the art, shall fall within the patent protection scope of this utility model.

Claims

1. An energy-saving combined cooling and heating heat recovery device, comprising a recovery tank (1), characterized in that: The recycling bin (1) is provided with a first partition layer (2) and a second partition layer (3) from the inside out. The first partition layer (2) and the second partition layer (3) divide the recycling bin (1) into a wastewater chamber (4), a recycling chamber (5) and a waste gas chamber (6) distributed coaxially. An adjustment plate (7) is rotatably connected to the top of the recycling chamber (5). The adjustment plate (7) is connected to a number of stirring plates (8). The stirring plates (8) can push the water inside the recycling chamber (5). The waste gas chamber (6) is equipped with a waste gas circulation assembly, and the waste water chamber (4) is equipped with a waste water circulation assembly along its axial direction. The waste water circulation assembly includes a water suction plate (9), a water pump (10), and a distribution pipe (11). The water suction plate (9) is located at the bottom of the waste water chamber (4). The water suction plate (9) has a plurality of water suction holes (12) arranged in a circular array. The water pump (10) is connected between the distribution pipe (11) and the water suction holes (12) of the water suction plate (9). The upper end of the distribution pipe (11) is located at the upper part of the waste water chamber (4).

2. The energy-saving combined cooling and heating heat recovery device according to claim 1, characterized in that: The recycling bin (1) has several air guide protrusions (13) inside. The air guide protrusions (13) are distributed along the height direction of the recycling bin (1), and the two sides of the air guide protrusions (13) converge towards the middle to form an air guide slope. An air guide channel is formed between the air guide protrusions (13) and the second partition layer (3). The central recess of the air guide protrusion (13) forms a first receiving groove (14), and the second partition layer (3) is recessed inward to form a plurality of second receiving grooves (15). The first receiving groove (14) and the second receiving grooves (15) are arranged opposite to each other to form a circular operating space, and the exhaust gas recirculation component is located in the operating space.

3. The energy-saving combined cooling and heating heat recovery device according to claim 2, characterized in that: The first partition layer (2) protrudes outward to form a plurality of first protrusions (16), and the plurality of first protrusions (16) and the inner sides of the plurality of second receiving grooves (15) are arranged opposite to each other to form a water flow acceleration port (17); The water flow acceleration port (17) can accommodate the passage of the stirring plate (8), and the width of the stirring plate (8) is set along the diameter direction of the recycling tank (1).

4. The energy-saving combined cooling and heating heat recovery device according to claim 1, characterized in that: The recycling bin (1) is equipped with a first drive motor (18), the output shaft of the first drive motor (18) is equipped with a drive gear (19), the adjusting disc (7) is equipped with a connecting gear ring (20), and the drive gear (19) meshes with the connecting gear ring (20). The top of the recovery chamber (5) is provided with a water inlet (21), and the setting of the water inlet (21) does not affect the operation of the stirring plate (8).

5. The energy-saving combined cooling and heating heat recovery device according to claim 1, characterized in that: The waste gas recirculation assembly includes a stirring rod (22) and a plurality of stirring blades (23) fixedly disposed with the stirring rod (22). The stirring rod (22) is disposed along the height direction of the recycling tank (1), and at least one end of the stirring rod (22) is provided with a second drive motor (24).

6. The energy-saving combined cooling and heating heat recovery device according to claim 1, characterized in that: The recycling chamber (5) is located between the wastewater chamber (4) and the waste gas chamber (6). The bottom of the wastewater chamber (4) is provided with a wastewater inlet (27) and the top of the wastewater chamber (4) is provided with a wastewater outlet (28). The top of the waste gas chamber (6) is provided with a waste gas inlet (25) and the bottom of the waste gas chamber (6) is provided with a waste gas outlet (26). The bottom of the recycling chamber (5) is provided with a drain outlet.

7. The energy-saving combined cooling and heating heat recovery device according to claim 1, characterized in that: Several suction holes (12) are connected through the axis of the suction plate (9). The water inlet of the water pump (10) is sealed to the suction plate (9). The diameter of the suction plate (9) is larger than the diameter of the distribution pipe (11) and smaller than the inner diameter of the wastewater chamber (4).