Waste heat recovery high-efficiency heater

Abstract

The utility model discloses a kind of waste heat recovery high-efficiency heaters.It includes condenser, evaporator and compressor with built-in compression medium, condenser, evaporator and compressor are interconnected to constitute heat pump system, condenser and evaporator are also provided with heat exchanger for heat exchange between them, heat exchanger has heat exchange box and heat exchange tube in heat exchange box, heat exchange box has wastewater inlet and box outlet, the box outlet of heat exchange box is connected with evaporator, heat exchange tube has purification inlet and pipe body outlet, the pipe body outlet of heat exchange tube is connected with condenser and can make purified water heat exchange after entering into condenser again to further heat and output.The advantage is: using its specific circulation means, preheated water, reduce compressor heating power, improve heating efficiency, in addition, by integrating each component in the body, high integration, easy to install and use, easy to maintain, make full use of waste heat.

Description

Technical Field

[0001] This utility model relates to a technology for hot water and waste heat recovery and utilization, specifically a high-efficiency waste heat recovery heater. Background Technology

[0002] In industrial or domestic hot water systems, heat pump systems mainly consist of compressors, evaporators, condensers, and throttling devices. These systems heat cold water. In practice, the heated water is usually discharged directly after use. However, much industrial or agricultural water still retains a significant amount of residual heat after use. Direct discharge of this heat results in a waste of heat. Therefore, some have proposed using specialized waste heat recovery systems. However, existing waste heat recovery systems are not only bulky and costly to manufacture, but also difficult to install, debug, and maintain. Furthermore, they have numerous leakage points and low recovery efficiency. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a high-efficiency waste heat recovery heater with a compact structure, convenient installation, debugging and maintenance, and high heat recovery efficiency.

[0004] To solve the above-mentioned technical problems, the present invention provides a high-efficiency waste heat recovery heater, comprising a condenser, an evaporator, and a compressor containing a compressed medium. The condenser, evaporator, and compressor are interconnected to form a heat pump system. A heat exchanger for heat exchange is also provided between the condenser and the evaporator. The heat exchanger has a heat exchange chamber and heat exchange tubes inside the heat exchange chamber. The heat exchange chamber has a wastewater inlet and a chamber outlet. The chamber outlet of the heat exchange chamber is connected to the evaporator and enables the hot wastewater entering the heat exchange chamber through the wastewater inlet to exchange heat before entering the evaporator as a heat source for the evaporation of the compressed medium. The heat exchange tube has a purification inlet and a tube outlet. The tube outlet of the heat exchange tube is connected to the condenser and enables the purified water entering the heat exchange tube through the purification inlet to exchange heat before entering the condenser for further heating and output.

[0005] The condenser is equipped with a first condensing port, a second condensing port, a third condensing port, and a purification outlet. The evaporator is equipped with a first evaporating port, a second evaporating port, a third evaporating port, and a wastewater outlet. The casing outlet is connected to the second evaporating port, the pipe outlet is connected to the second condensing port, the third condensing port is connected to the third evaporating port, and both the first condensing port and the first evaporating port are connected to the compressor.

[0006] The condenser, evaporator, compressor, and heat exchanger are all integrated into a single unit.

[0007] The machine body is equipped with a No. 1 interface terminal connected to the wastewater inlet, a No. 2 interface terminal connected to the wastewater outlet, a No. 3 interface terminal connected to the purification inlet, and a No. 4 interface terminal connected to the purification outlet.

[0008] The heat exchange tube is a heat exchange coil.

[0009] The heat exchanger is a plate heat exchanger.

[0010] A throttling valve is installed between the No. 3 condensation port and the No. 3 evaporation port.

[0011] With the above structure, a heat exchanger is installed between the condenser and the evaporator for heat exchange. The outlet of the heat exchange chamber is connected to the evaporator, allowing hot wastewater entering the heat exchange chamber through the wastewater inlet to exchange heat before entering the evaporator as a heat source for the evaporation of the compressed medium, thus assisting the evaporator in operation. At the same time, the outlet of the heat exchange tube is connected to the condenser, allowing purified water entering the heat exchange tube through the purification inlet to exchange heat before entering the condenser for further heating and output. By utilizing its specific circulation method, the preheated water reduces the compressor's heating power and improves heating efficiency. In addition, by integrating all components into the machine body, the integration is high, installation and use are convenient, maintenance is easy, and waste heat is fully utilized. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the high-efficiency heater for industrial waste heat recovery according to this utility model. Detailed Implementation

[0013] The high-efficiency industrial waste heat recovery heater of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] As shown in the figure, the high-efficiency industrial waste heat recovery heater of this utility model includes a condenser 1, an evaporator 2, and a compressor 3 containing a compression medium. The condenser 1, evaporator 2, and compressor 3 are interconnected to form a heat pump system. A heat exchanger 4 for heat exchange is also provided between the condenser 1 and the evaporator 2. The heat exchanger 4 is preferably a plate heat exchanger. As can be seen from the figure, the condenser 1 is provided with a first condensation port 1-1, a second condensation port 1-2, a third condensation port 1-3, and a purification outlet 1-4. The evaporator 1 is provided with a first evaporation port 2-1, a second evaporation port 1-2, a third condensation port 1-3, and a purification outlet 1-4. Evaporation port 2-2, evaporation port 2-3, and wastewater outlet 2-4; heat exchanger 4 has a heat exchange box 5 and heat exchange tubes 6 inside the heat exchange box, the heat exchange tubes 6 being heat exchange coils; heat exchange box 5 has a wastewater inlet 7 and a box outlet 8; heat exchange tubes have a purification inlet 9 and a tube outlet 10. For the connection structure of the heat pump system, condenser port 1-1 and evaporation port 2-1 of evaporator 2 are both connected to compressor 3; condenser port 1-3 of condenser 1 is connected to evaporation port 2-3 of evaporator 2. When... However, a throttling valve 16 is also installed between the third condensing port 1-3 of condenser 1 and the third evaporating port 2-3 of evaporator 2. The outlet 8 of the heat exchange box 5 is connected to the second evaporating port 2-2 of evaporator 2, allowing the hot wastewater entering the heat exchange box through the wastewater inlet 7 to exchange heat before entering the evaporator as a heat source for the evaporation of the compressed medium. The outlet 10 of the heat exchange tube is connected to the second condensing port 1-2 of condenser 1, allowing the purified water entering the heat exchange tube through the purification inlet 9 to exchange heat before entering the condenser for further heating. The output is as follows: Through this structural design, wastewater hot water enters the heat exchanger for primary heat exchange, passes through the tank outlet 8, enters the evaporator through the second evaporation port 2-2 for heat exchange, and is discharged after being cooled by the evaporator through the wastewater outlet 2-4. The heating part, cold water, undergoes primary heat exchange through the heat exchanger, absorbs heat from the wastewater hot water, enters the condenser 1 through the pipe outlet 10 and the second condensation port 1-2, is heated, and is discharged from the fourth interface end 15. It cleverly utilizes the wastewater waste heat for primary heat exchange and then performs secondary heat exchange through the reverse Carnot principle of the heat pump, making the heater more efficient.

[0015] Furthermore, the condenser 1, evaporator 2, compressor 3 and heat exchanger 4 are integrated into a single unit 11. The unit 11 is equipped with a first interface 12 connected to the wastewater inlet, a second interface 13 connected to the wastewater outlet, a third interface 14 connected to the purification inlet, and a fourth interface 15 connected to the purification outlet.

[0016] Its working principle is as follows:

[0017] For heat pump systems, it is well known that the evaporator is the heat-absorbing end of the compressed medium (the medium absorbs heat and turns into gas), and the condenser is the heat-releasing end. The condenser can dissipate heat into the heated medium (such as water) and condense the compressed medium of the compressor. Based on this, in the operation of this invention, wastewater enters the heat exchange box from the first interface 12 through the wastewater inlet 7 and is cooled down. Since the heat exchanger's box outlet 8 is connected to the second evaporation port 2-2 of the evaporator, the hot wastewater output from the heat exchange box can be used as the heat source for the evaporation of the compressed medium. After further heat dissipation by the evaporator, it is discharged to assist the evaporator in its operation (the evaporator absorbs heat). Purified water enters the heat exchange tube 6 from the third interface 14 through the purification inlet 9. After heat exchange and heat absorption (preheating) by the heat exchanger, it enters the condenser through the tube outlet 10 of the heat exchange tube and the second condensation port 1-2 of the condenser 1 (absorbing the heat dissipated by the condenser medium), is further heated, and then outputs hot water.

[0018] As can be seen from the working principle described above, preheated water, having already reached a higher temperature, reduces the heating power of the compressor, thereby increasing heating efficiency. The evaporator increases the evaporation temperature (heat source heating assistance), which in turn reduces the power consumption of the compressor.

[0019] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A high-efficiency waste heat recovery heater, comprising a condenser (1), an evaporator (2), and a compressor (3) with a built-in compression medium, characterized in that: The condenser (1), evaporator (2) and compressor (3) are interconnected to form a heat pump system. A heat exchanger (4) for heat exchange is also provided between the condenser (1) and evaporator (2). The heat exchanger (4) has a heat exchange box (5) and a heat exchange tube (6) inside the heat exchange box. The heat exchange box (5) has a wastewater inlet (7) and a box outlet (8). The box outlet of the heat exchange box (5) is connected to the evaporator (2) and can allow the hot wastewater entering the heat exchange box through the wastewater inlet (7) to exchange heat before entering the evaporator as a heat source for the evaporation of the compression medium. The heat exchange tube has a purification inlet (9) and a tube outlet (10). The tube outlet of the heat exchange tube is connected to the condenser (1) and can allow the purified water entering the heat exchange tube through the purification inlet (9) to exchange heat before entering the condenser for further heating and output.

2. The high-efficiency waste heat recovery heater according to claim 1, characterized in that: The condenser (1) is provided with a first condensing port (1-1), a second condensing port (1-2), a third condensing port (1-3), and a purification outlet (1-4). The evaporator (2) is provided with a first evaporating port (2-1), a second evaporating port (2-2), a third evaporating port (2-3), and a wastewater outlet (2-4). The box outlet (8) is connected to the second evaporating port (2-2). The pipe outlet (10) is connected to the second condensing port (1-2). The third condensing port (1-3) is connected to the third evaporating port (2-3). The first condensing port (1-1) and the first evaporating port (2-1) are both connected to the compressor (3).

3. The high-efficiency waste heat recovery heater according to claim 1 or 2, characterized in that: The condenser (1), evaporator (2), compressor (3) and heat exchanger (4) are integrated into a single body (11).

4. The high-efficiency waste heat recovery heater according to claim 3, characterized in that: The body (11) is provided with a No. 1 interface (12) connected to the wastewater inlet, a No. 2 interface (13) connected to the wastewater outlet, a No. 3 interface (14) connected to the purification inlet, and a No. 4 interface (15) connected to the purification outlet.

5. The high-efficiency waste heat recovery heater according to claim 1, 2 or 4, characterized in that: The heat exchange tube (6) is a heat exchange coil.

6. The high-efficiency waste heat recovery heater according to claim 2, characterized in that: A throttling valve (16) is provided between the No. 3 condensing port (1-3) and the No. 3 evaporating port (2-3).

7. The high-efficiency waste heat recovery heater according to claim 1, characterized in that: The heat exchanger (4) is a plate heat exchanger.

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