WO2021143657A1

WO2021143657A1 - Air conditioner condensate water two-stage utilization device

Info

Publication number: WO2021143657A1
Application number: PCT/CN2021/071157
Authority: WO
Inventors: 刘俊红; 刘凤珍
Original assignee: 山东建筑大学
Priority date: 2020-01-13
Filing date: 2021-01-12
Publication date: 2021-07-22
Also published as: CN110966747A

Abstract

In order to solve the problems of energy utilization of air conditioner condensate water and influence of condensate water regathering in a process on a heat exchange device, the present invention provides an air conditioner condensate water two-stage utilization device, mainly comprising a fresh air treatment box and an upper water tank. An air inlet and an air outlet are provided on the fresh air treatment box; a fan, a heat pipe exchanger and a condensate water pan are provided in the fresh air treatment box; the condensate water pan is fixedly connected to the middle part of the fresh air treatment box and is distributed by inclining at a certain angle in the horizontal direction; a water outlet is provided at a lower position; the air inlet and the air outlet are both located above the condensate water pan; the fan is located at one end of the air outlet; the heat pipe exchanger passes through the condensate water pan in the vertical direction; a plurality of fins are fixedly connected to the part, located above the condensate water pan, of the heat pipe exchanger; an air conditioner condensate water inlet pipe located below the condensate water pan is provided on the fresh air treatment box; the upper water tank is fixedly connected below the fresh air treatment box; a first overflow pipe is connected between the fresh air treatment box and the upper water tank; a first water outlet pipe is provided at the lower portion of the upper water tank.

Description

A two-stage utilization device for condensed water of air conditioner

Technical field

The invention relates to the technical field of building energy saving, in particular to a dual-stage utilization device for condensed water of an air conditioner.

Background technique

Water resources are an important resource indispensable for human survival and social development. With the rapid development of my country's economy, the progress of urbanization and industrialization, the demand for water has increased rapidly. At the same time, the utilization rate of air-conditioning in the national economic production and people's social life is getting higher and higher. The water vapor in the air will condense on the surface of the evaporator to produce condensed water during the indoor cooling of the air conditioner. Theoretically, the condensed water is pure water, but because the air contains some harmful substances such as dust, bacteria, viruses, etc., when the water vapor condenses, these harmful substances are brought to the condensed water, but the air-conditioning condensate can be purified after purification. Drinking level.

The temperature of the condensed water is relatively low, generally between 10°C and 15°C, and the environment with a higher humidity load produces more condensed water. According to GB 50736-2012 "Civil Building Heating Ventilation and Air Conditioning Design Code", each 1kw cooling load can produce 0.4-0.8kg of condensate water per 1h. Therefore, the huge air-conditioning utilization rate in the building makes the amount of condensate water generated by the air-conditioning is also considerable, and the condensate water generated is a by-product of the air-conditioning operation, and no additional energy is required. Therefore, the collection and recycling of the cold and water volume of air-conditioning condensate can not only achieve building energy saving, but also "open source" the existing water resources, and is an effective way to solve the shortage of water resources.

In the prior art, there is an energy recovery system or device that uses air-conditioning condensate to cool the air. However, in the process of air-conditioning condensate heat exchange, due to the low temperature of the air-conditioning condensate, the introduced air may still be exchanging heat. On the heat exchanger and other internal structures, new condensate water is formed to cover the heat exchanger and other structures. Since the temperature of the newly formed condensate is generally higher than the temperature of the heat pipe heat exchanger, the heat exchange efficiency of the heat pipe heat exchanger will be reduced. And with long-term use, the condensed water inside the heat exchange mechanism will gradually increase, causing certain damage to the internal structure and parts. In addition, most of them are the single use of cold or water, and there is no two-stage recycling of cold or water.

Summary of the invention

In order to solve the above-mentioned problems, the present invention provides a dual-stage utilization device for air-conditioning condensate water. The technical solutions adopted are as follows:

A dual-stage utilization device for air-conditioning condensate, which is characterized in that it mainly includes:

Fresh air treatment box, the fresh air treatment box is provided with an air inlet and an air outlet, and is provided with a fan for exhausting air to the outside, a heat pipe heat exchanger, and a condensate pan that divides the fresh air treatment box into upper and lower parts. The condensate pan is fixedly connected to the middle of the fresh air treatment box. The condensate pan is inclined at a certain angle in the horizontal direction, and there is a water outlet at the low position of the condensate pan. The air inlet and the air outlet are both located above the condensate pan, and the fan is located At one end of the air outlet, the heat pipe heat exchanger is vertically distributed through the condensate pan. The part of the heat pipe heat exchanger located above the condensate pan is fixedly connected with a number of fins. The fresh air treatment box is also provided with a condensate pan. The air-conditioning condensate water inlet pipe below;

A high-level water tank, the high-level water tank is fixedly connected below the fresh air treatment tank, a first overflow pipe is connected between the fresh air treatment tank and the high-level water tank, and a first water outlet pipe is arranged at the lower part of the high-level water tank.

Preferably, it further includes a low-level water tank fixedly connected below the high-level water tank, a second water outlet pipe is arranged on the low-level water tank, and a second overflow pipe is also arranged between the high-level water tank and the low-level water tank.

Preferably, the fresh air treatment box is also provided with a plurality of deflectors evenly distributed along the airflow direction, and the deflectors are fixedly connected to the bottom plate of the fresh air treatment box in the vertical direction, and two adjacent deflectors are respectively fixed Connected to the front and rear ends of the fresh air treatment box.

Preferably, several fins are evenly distributed along the height direction of the heat pipe heat exchanger, and the plane of each fin is parallel to the plane from the air inlet to the air outlet.

Preferably, drainage grooves are provided on the condensate pan, and the drainage grooves are distributed along the inclined direction of the condensate pan.

Preferably, the fresh air treatment box is provided with an air filter device near one end of the air inlet and above the condensate pan.

Preferably, a filter valve is provided on the condensate water inlet pipe of the air conditioner.

Preferably, the fresh air treatment box is also provided with a drain pipe below the condensate pan, and the drain pipe is provided with an on-off valve.

Preferably, the upper part of the high-level water tank and the low-level water tank are respectively provided with a first vent hole and a second vent hole, and the upper end of the second overflow pipe is located below the first vent hole.

Preferably, the outer surface of the low-level water tank is provided with diversion grooves distributed in a vertical direction, and the upper end of the diversion groove is connected with the second exhaust hole.

The beneficial effects of the present invention are:

1. Use air-conditioning condensate as the cold source to cool the introduced fresh air, play the role of fresh air pre-cooling or fresh air treatment, reduce the load of indoor fresh air treatment equipment or replace indoor fresh air treatment equipment, so as to achieve the purpose of building energy saving and improving indoor air quality ；

2. After the cold capacity of the condensate is used, it can continue to use the condensed water to realize the dual-stage utilization of the air-conditioning condensate cold and water to maximize its energy efficiency utilization;

3. Through the setting of the condensate tray structure, it can prevent the condensation of condensate during the heat exchange process, improve the heat exchange efficiency and prolong the service life of the parts.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the present invention

Figure 2 is the A-A view

Figure 3 is a left side view of the heat pipe heat exchanger and fin structure

Figure 4 is a schematic top view of the heat pipe heat exchanger and fin structure

Among them, 1-fan, 2-heat pipe heat exchanger, 3-fins, 4-fresh air treatment box, 5-air filter, 6-air conditioning condensate water inlet pipe, 7-filter valve, 8-drain pipe, 9- On-off valve, 10- deflector, 11- condensate tray, 12- outlet, 13- first overflow pipe, 14- second overflow pipe, 15- high water tank, 16- first outlet pipe, 17- Check valve, 18-electric three-way valve, 19-filter, 20-first water pipe, 22-second water pipe, 23-water pump, 24-second water outlet, 25-low water tank, 26-th One exhaust hole, 27-second exhaust hole, 28-diversion groove, 29-base, 30-second on-off valve.

Detailed ways

Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the drawings show exemplary embodiments of the present disclosure, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

The air conditioning condensate two-stage utilization device shown in Figure 1-4 mainly includes three parts: the fresh air treatment box 4, the high-level water tank 15, and the low-level water tank 25 that are connected sequentially from top to bottom. Among them, the fresh air treatment box 4 is provided in the middle part Condensate pan 11, the condensate pan 11 is in a plate-like structure to divide the fresh air treatment box 4 into upper and lower parts. The condensate pan 11 is inclined downwardly from left to right, and is provided between the right end and the fresh air treatment box 4 At the water outlet 12, the upper surface of the condensate pan 11 is provided with drainage grooves distributed from left to right. A plurality of heat pipe heat exchangers 2 are fixedly connected to the condensate pan 11 from left to right, and the heat pipe heat exchangers 2 are in a vertical direction. Distributed through the condensate tray 11, the upper part of the heat pipe heat exchanger 2 is located above the condensate tray 11, the lower part extends to the lower part of the fresh air processing box 4, and the upper part of the heat pipe heat exchanger 2 is fixedly connected with a plurality of The ribs 3 are in a plate-like structure. The plane of each rib 3 is distributed parallel to the horizontal plane. In addition, the left and right end faces of the fresh air processing box 4 are respectively provided with air inlets and air outlets, and the air inlets and air outlets are located in the condensation. Above the water tray 11, a fan 1 for drawing air to the outside is fixedly connected to the side of the air inlet, an air filter 5 is fixedly connected to one end of the air outlet, and the left end of the fresh air processing box 4 is also provided with an air conditioning condensate water inlet pipe 5 and The drain pipe 8, both of which are located below the condensate pan 11. The air conditioning condensate water inlet pipe 5 is provided with a filter valve 7, and the drain pipe 8 is provided with an on-off valve 9. In this embodiment, the on-off valve 9 is a stop valve. It is used to control drainage. A number of deflectors 10 are also fixedly connected to the lower end surface of the fresh air treatment box 4, the distribution of which is shown in Figure 1-2. The plates 10 are evenly distributed along the left and right directions, and each baffle 10 is vertically and fixedly connected to the top of the bottom plate. The adjacent baffles 10 are respectively fixedly connected to the front and rear ends of the fresh air treatment box 4, and several baffles 10 form a wave shape. The flow channel makes the condensate flow in an orderly manner.

A first overflow pipe 13 is connected between the fresh air treatment box 4 and the high-level water tank 15. The upper end of the first overflow pipe 13 is connected to the lower part of the fresh air treatment box 4, and the connection point is located below the water outlet 12. The first overflow pipe 13 The lower end is connected to the upper part of the high-level water tank 15; a second overflow pipe 14 is connected between the high-level water tank 15 and the low-level water tank 25, wherein the upper end of the second overflow pipe 14 is connected to the upper part of the high-level water tank 15, and the lower end is connected to the low-level water tank 25 The upper part of the high-level water tank 15 and the low-level water tank 25 are respectively provided with a first exhaust hole 26 and a second exhaust hole 27, and the position of the first exhaust hole 26 is higher than the upper end position of the second overflow pipe 14, the lower position The outer surface of the water tank 25 is provided with diversion grooves 28 distributed in a vertical direction. The upper end of the diversion groove 28 is connected with the second exhaust hole 27, and the lower end extends to the base 29 for draining water to indoor floor drains or other drainage systems.

The lower part of the high-level water tank 15 is provided with a first water outlet pipe 16, which is connected to the water supply pipe through an electric three-way valve 18, and the first water outlet pipe 16 is provided with a check valve 17, and the water in the high-level water tank 15 is There is a certain pressure, so it can be connected to a water supply pipe for domestic water use. In Figure 1, the first water outlet pipe 16 and the water supply pipe are combined to supply water for two water pipes. The first water pipe 20 is sequentially provided with filters 19 and the second on-off valve 30 can be used as water for washing and vegetable washing, and the second water pipe 21 can be used as water for flushing toilets.

The lower water tank 25 is provided with a second water outlet pipe 24. The lower end of the second water outlet pipe 24 is located at the lower end of the lower water tank 25, and the upper end is located outside the upper part of the lower water tank 25, and the upper end of the second water outlet pipe 24 is connected with a water pump 23. 23 is provided with a switch button 22, because the internal water pressure of the low-level water tank 25 is insufficient, the water in the low-level water tank 25 is taken out through the water pump 23.

The principle of the overall device is as follows. The condensed water is filtered by the filter valve 7 on the condensate water inlet pipe 6 and then enters the lower part of the fresh air treatment box 4. The condensed water forms an orderly flow under the guidance of the deflector 10 and gradually fills the fresh air treatment box 4 After the fan 1 is turned on, the outside air enters the upper part of the fresh air treatment box 4 through the air inlet, passes through the heat pipe heat exchanger 2 and the fins 3 in turn, and is discharged from the air outlet. During the process, heat exchange is performed between the condensate water and the upper air of the fresh air treatment box 4 through the heat pipe heat exchanger 2. The plane of the fins 3 is distributed along the air flow plane, which has the effect of uniform air volume and increasing heat exchange area. After the heat exchange is completed, the fan is discharged from the air outlet, and the condensed water condensed on the heat pipe heat exchanger 2, the fins 3 and other structures inside the box body flows to the water outlet 12 through the inclined condensate pan 11, And it finally flows into the fresh air treatment box 4 located below the condensate pan 11, which not only avoids long-term use, the internal condensate accumulation causes the heat exchange efficiency to decrease, but also reduces the risk of component damage caused by long-term immersion in water.

The air-conditioning condensate dual-stage utilization device can be installed in the rooms with floor drains and near the end of the water in the building, such as toilets, toilets, etc. It uses air-conditioning condensate as the cold source and water source, and first cools the incoming fresh air through a heat exchanger , It has the function of fresh air pre-cooling for large air-conditioning systems, which can reduce the load of indoor fresh air processing equipment; for small air-conditioning systems or household air-conditioning systems, as indoor fresh air processing equipment, introduce fresh air and cool it to make up for the shortcomings of no fresh air introduction, and improve the indoor The comfort of personnel, in both cases, reduces the fresh air cooling load from the source, achieving the effect of building energy saving and cooling.

After the device uses the condensed water cooling capacity, it will continue to use its water capacity. It is used as an "open source" water source in the building for washing, toilet flushing and mop washing. It is an effective way to solve the shortage of water resources. The dual-stage utilization of air conditioning condensate cooling capacity and water capacity maximizes its energy efficiency utilization.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements can be made, and these improvements should also be regarded as the present invention. The scope of protection of the invention.

Claims

A dual-stage utilization device for air-conditioning condensate, which is characterized in that it mainly includes:

Fresh air treatment box, the fresh air treatment box is provided with an air inlet and an air outlet, and is provided with a fan for exhausting air to the outside, a heat pipe heat exchanger, and a condensate pan that divides the fresh air treatment box into upper and lower parts. The condensate pan is fixedly connected to the middle of the fresh air treatment box. The condensate pan is inclined at a certain angle in the horizontal direction, and there is a water outlet at the low position of the condensate pan. The air inlet and the air outlet are both located above the condensate pan, and the fan is located At one end of the air outlet, the heat pipe heat exchanger is vertically distributed through the condensate pan. The part of the heat pipe heat exchanger located above the condensate pan is fixedly connected with a number of fins. The fresh air treatment box is also provided with a condensate pan. The air-conditioning condensate water inlet pipe below;

A high-level water tank, the high-level water tank is fixedly connected below the fresh air treatment tank, a first overflow pipe is connected between the fresh air treatment tank and the high-level water tank, and a first water outlet pipe is arranged at the lower part of the high-level water tank.
The air-conditioning condensate dual-stage utilization device according to claim 1, further comprising a low-level water tank, the low-level water tank is fixedly connected below the high-level water tank, the low-level water tank is provided with a second water outlet pipe, and the high-level water tank and A second overflow pipe is also arranged between the low-level water tanks.
The air-conditioning condensate dual-stage utilization device according to claim 1, wherein the fresh air processing box is also provided with a plurality of baffles evenly distributed along the airflow direction, and the baffles are fixedly connected in the vertical direction On the bottom plate of the fresh air treatment box, two adjacent baffles are respectively fixedly connected to the front and rear ends of the fresh air treatment box.
The air-conditioning condensate dual-stage utilization device according to claim 1, wherein a plurality of fins are evenly distributed along the height direction of the heat pipe heat exchanger, and the plane of each fin is parallel to the plane from the air inlet to the air outlet.
The dual-stage utilization device for air-conditioning condensate water according to claim 1, wherein a drainage groove is provided on the condensate pan, and the drainage grooves are distributed along the inclined direction of the condensate pan.
The air conditioning condensate dual-stage utilization device according to claim 1, wherein the fresh air treatment box is provided with an air filter device near one end of the air inlet and above the condensate pan.
The air conditioner condensate water dual-stage utilization device according to claim 1, wherein the air conditioner condensate water inlet pipe is provided with a filter valve.
The dual-stage utilization device for air-conditioning condensate water according to claim 1, wherein the fresh air treatment box is further provided with a drain pipe located below the condensate pan, and an on-off valve is provided on the drain pipe.
The air-conditioning condensate dual-stage utilization device according to claim 2, wherein the upper part of the high-level water tank and the low-level water tank are respectively provided with a first exhaust hole and a second exhaust hole, and the second overflow pipe The upper end is located below the first exhaust hole.
The air-conditioning condensate dual-stage utilization device according to claim 9, wherein the outer surface of the low-level water tank is provided with vertical diversion grooves, and the upper end of the diversion groove is connected with the second exhaust hole .