A single-layer or multi-layer centralized placement system for air source heat pumps

Abstract

A single-layer or multi-layer centralized placement system for air source heat pumps belongs to the field of energy technology. The purpose of the present invention is to provide a single-layer or multi-layer centralized placement system for air source heat pumps to solve the problem of cross-infection of air inlet and outlet of air source heat pump units, affecting the air heat exchange efficiency, as well as the problem of insufficient machine room space and excessive impact of rainy and snowy weather on the units. The system of the present invention includes an air source heat pump unit, an axial flow fan, a pipe section, an air duct outlet, and a hood. The airtight reliability of the pipe section connection is achieved through a sealing rubber ring and a flange bolt connection, and the independent exhaust of the pipe section is achieved through an axial flow fan. The present invention is suitable for independent exhaust of a single-layer or multi-layer centralized placement system for air source heat pumps, which saves floor space, ensures that the air inlet and outlet of the unit do not affect each other, improves the heat exchange efficiency of the unit, and has the advantages of simple structure and reliability. It is suitable for air source heat pump heating and cooling systems.

Description

Technical Field

[0001] The invention relates to a single-layer or multi-layer centralized placement system for air source heat pumps, belonging to the technical field of energy. Background Art

[0002] In recent years, winter haze weather has occurred frequently, air pollution is serious, and energy consumption demand is high in summer. There is an urgent need for an efficient and environmentally friendly heating and cooling method to replace traditional coal-fired and air-conditioning systems. Heat pump technology extracts cold and heat from low-grade, renewable clean energy for building heating and air-conditioning, which has huge energy-saving and emission-reduction potential and has become an important way to alleviate the problems of air-conditioning energy consumption and environmental pollution. These low-grade renewable clean cold and heat sources include: water source, soil source, air source, etc. Their temperature is between 0 and 30°C in winter. When they are used as the cold and heat sources of heat pumps, the utilization efficiency of the primary energy of coal, oil, and natural gas in the heat pump system can reach 133% or even higher, and the energy saving range can be more than 45%. Water source heat pumps require a suitable water source near the heat pump station, which is not easy to meet; soil source heat pumps are small in scale and occupy a large area. They are not suitable for domestic public buildings with a large number of people and large-scale construction, and the cost is high. The low-grade energy used by air source heat pumps is ubiquitous air, which is not restricted by soil and water sources and is suitable for large-scale public buildings in most areas. When large public buildings use air source heat pump technology for heating and cooling, they face two technical challenges. On the one hand, when the air source heat pump units are placed too densely, the distance between the lower air inlet and the upper air outlet of each unit is too close, causing disturbances in the inlet and outlet air flow fields, greatly affecting the temperature difference. On the other hand, how to achieve an efficient and stable air heat exchange process.

[0003] At present, the solutions commonly used by people are to increase the intervals between each air source heat pump unit, and to increase the air heat exchanger, auxiliary heat source, and increase the supply air temperature difference to improve the unit efficiency. The first method not only fails to completely solve the problem of cross-infection between the incoming and return air, but also increases the difficulty of the machine room layout; in the face of large-scale public buildings that require large-scale heating and cooling, such as high-speed railway stations and railway stations, a large number of air source heat pump units are inevitably required. Simply increasing the intervals will lead to insufficient space in the machine room and cannot solve the problem of cross-infection between the incoming and outgoing air. The other method is also not practical when the amount of heating and cooling is huge. It uses the addition of air heaters to increase the temperature difference. Although it improves the efficiency of the air heat exchange process to a certain extent, when multiple units are used, the number of air heaters also increases. While the system energy consumption increases, a large part of the heat energy is also wasted, which directly leads to a decrease in the heating or cooling performance coefficient of the entire system.

[0004] The present invention adopts the method of layered placement of air source heat pumps, which saves floor space, ensures that the inlet and outlet air of the unit do not affect each other, and improves the heat exchange efficiency of the unit. In addition, the system of the present invention effectively solves the impact of rainy and snowy weather in the north on axial flow fans. Summary of the invention

[0005] The purpose of the present invention is to provide a single-layer or multi-layer centralized placement system for air source heat pumps to solve the problem of cross-infection of air in and out of each unit of the air source heat pump, affecting the air heat exchange efficiency, while saving machine room space.

[0006] The technical solution adopted by the present invention to solve the above technical problems is:

[0007] A single-layer or multi-layer centralized placement system of air source heat pumps, which is composed of an air source heat pump unit, an axial flow fan, an air duct outlet and a hood, characterized in that the air source heat pump unit 1 is connected to the axial flow fan 1, the axial flow fan 1 is connected to the pipe section 1; the other end of the pipe section 1 is connected to the air duct outlet 1, and the hood 1 is arranged on the upper part of the air duct outlet 1. The air source heat pump unit 1, the axial flow fan 1, the pipe section 1, the air duct outlet 1 and the hood 1 constitute an air duct device A1. Multiple air duct devices A1 are placed on a single-layer welded steel frame.

[0008] The single-layer or multi-layer centralized placement system of an air source heat pump is characterized in that the axial flow fan is connected to the pipe section vertically above the air source heat pump unit.

[0009] The single-layer or multi-layer centralized placement system of air source heat pumps is characterized in that the axial flow fan and

[0010] The pipe section and the wind cap are connected by flange bolts and are sealed with a sealing rubber ring.

[0011] The single-layer centralized placement system for air source heat pumps is characterized in that the wind hoods are located at the same horizontal height.

[0012] The single-layer or multi-layer centralized placement system of air source heat pumps is characterized in that the axial flow fan is composed of

[0013] It consists of an electric motor, a transmission main shaft and spiral blades; one side of the transmission main shaft is connected to the electric motor, and the other side is connected to the spiral blades; the direction of the axial flow fan must be consistent with the air outlet of the air duct.

[0014] A double-layer centralized placement system for air source heat pumps, characterized in that it consists of air source heat pump unit 2, air source heat pump unit 3, axial flow fan 2, axial flow fan 3, pipe section 2, pipe section 3, pipe section 4, duct elbow 1, duct elbow 2, duct outlet 2, duct outlet 3, hood 2, and hood 3. The air source heat pump unit 2 is connected to axial flow fan 2, axial flow fan 2 is connected to pipe section 2; the other end of pipe section 2 is connected to duct outlet 2, and hood 2 is arranged on the upper part of duct outlet 2. Air source heat pump unit 2, axial flow fan 2, pipe section 2, pipe section 2, duct outlet 2, and hood 2 form duct device B1. The air source heat pump unit 3 is connected to the axial flow fan 3, and the axial flow fan 3 is connected to the pipe segment 3; the other end of the pipe segment 3 is connected to the duct elbow 1, the other end of the duct elbow 1 is connected to the duct elbow 2, the other end of the duct elbow 2 is connected to the pipe segment 4, the other end of the pipe segment 4 is connected to the duct outlet 3, and the wind cap 2 is arranged on the upper part of the duct outlet 3; the air source heat pump unit 3, the axial flow fan 3, the pipe segment 3, the duct elbow 1, the duct elbow 2, the pipe segment 4, the duct outlet 3, and the wind cap 2 constitute the duct device A2. The duct device B1 is placed on the double-layer welded steel frame 2, and the duct device A2 is placed on the double-layer welded steel frame 1.

[0015] The air source heat pump uses a double-layer centralized placement double-layer system, characterized in that the second hood and the third hood are located at the same horizontal height.

[0016] A multi-layer centralized placement multi-layer system for air source heat pump, characterized in that it is composed of air source heat pump unit 4, axial flow fan 4, pipe section 5, air duct outlet 4 and wind cap 4, the air source heat pump unit 4 is connected to axial flow fan 4, axial flow fan 4 is connected to pipe section 5; the other end of pipe section 5 is connected to air duct outlet 4, and wind cap 4 is arranged on the upper part of air duct outlet 4; air source heat pump unit 4, axial flow fan 4, pipe section 5, air duct outlet 4 and wind cap 4 form air duct device A3. The connection mode of air duct device B2 and air duct device C is the same as that of air duct device A3; air duct device A3 is placed on multi-layer welded steel frame 1, air duct device B2 is placed on multi-layer welded steel frame 2, and air duct device C is placed on multi-layer welded steel frame 3.

[0017] The multi-layer centralized placement system for an air source heat pump is characterized in that the four wind hoods are located at the same horizontal height.

[0018] The operating principle of the present invention is: under the action of the axial flow fan, the air that extracts heat and cold through the air source heat pump unit enters the air duct section through the air duct inlet, ensuring that the flow direction is unidirectional, and passes through the air duct elbows in turn to the air duct outlet. The wind cap prevents natural rain and snow from entering the pipeline to affect the operation of the equipment or corrode the inside of the pipeline, thereby ensuring effective and independent exhaust.

[0019] The beneficial effects of the present invention relative to the prior art are:

[0020] (1) The present invention sets up an independent air duct to collect the air medium after heat exchange of the air source heat pump unit for centralized treatment, ensuring that the air inlet and outlet of the unit do not affect each other, so that the temperature of the fresh air used by the unit is high enough during heating and low enough during cooling, and is not affected by cross-infection of exhaust air, ensuring a sufficiently large heat exchange temperature difference, and greatly improving the efficiency of the unit.

[0021] (2) The present invention provides a method for placing air source heat pumps in a single layer or multiple layers when the air source heat pumps are placed in a centralized manner, which not only saves floor space but also leaves enough space for the placement of other equipment such as distribution cabinets.

[0022] (3) The present invention provides an independent air duct connected to the wind hood, which effectively curbs the impact of rainy and snowy weather in the north on the axial flow fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of a single-layer structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the double-layer structure of the present invention;

[0025] Figure 3 is a schematic diagram of a multilayer structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the axial flow fan and the sealing rubber ring of the present invention;

[0027] In the figure, the air source heat pump unit 1, the axial flow fan 2, the pipe section 3, the air duct outlet 4, the wind cap 5, the sealing rubber ring 6, the motor 7, the transmission shaft 8, the spiral blade 9, the air duct elbow 10, the single-layer welded steel frame 11, the double-layer welded steel frame 12, and the multi-layer welded steel frame 13. DETAILED DESCRIPTION

[0028] Specific implementation method 1, as Figure 1 As shown, a single-layer centralized placement system for air source heat pumps in this embodiment is composed of an air source heat pump unit 1-1, an axial flow fan 2-1, a pipe section 3-1, a duct outlet 4-1 and a hood 5-1. The air source heat pump unit 1-1 is connected to the axial flow fan 2-1, and the axial flow fan 2-1 is connected to the pipe section 3-1; the other end of the pipe section 3-1 is connected to the duct outlet 4-1, and the hood 5-1 is arranged on the upper part of the duct outlet 4-1. The air source heat pump unit 1-1, the axial flow fan 2-1, the pipe section 3-1, the duct outlet 4-1 and the hood 5-1 constitute the duct device A1. Multiple duct devices A1 are placed on a single-layer welded steel frame 11. The beneficial effect of this embodiment is that the duct is used for independent exhaust, which effectively prevents cross infection of the incoming and outgoing air.

[0029] Specific implementation method 2: Figure 2 As shown, a double-layer centralized placement system for an air source heat pump in this embodiment is composed of an air source heat pump unit 2 1-2, an air source heat pump unit 3 1-3, an axial flow fan 2-2, an axial flow fan 3 2-3, a pipe section 2 3-2, a pipe section 3 3-3, a pipe section 4 3-4, an air duct elbow 10-1, an air duct elbow 2 10-2, an air duct outlet 2 4-2, an air duct outlet 3 4-3, a wind cap 2 5-2 and a wind cap 3 5-3. The air source heat pump unit 2 1-2 is connected to the axial flow fan 2-2, and the axial flow fan 2-2 is connected to the pipe section 2 3-2; the other end of the pipe section 2 3-2 is connected to the air duct outlet 2 4-2, and the wind cap 2 5-2 is arranged on the upper part of the air duct outlet 2 4-2. The air source heat pump unit 2 1-2, the axial flow fan 2-2, the pipe section 2 3-2, the pipe section 2 3-2, the air duct outlet 2 4-2, and the air cap 2 5-2 constitute the air duct device B1. The air source heat pump unit three 1-3 is connected to the axial flow fan three 2-3, and the axial flow fan three 2-3 is connected to the pipe section three 3-3; the other end of the pipe section three 3-3 is connected to the air duct elbow one 10-1, and the other end of the air duct elbow one 10-1 is connected to the air duct elbow two 10-2, and the other end of the air duct elbow two 10-2 is connected to the pipe section four 3-4, and the other end of the pipe section four 3-4 is connected to the air duct outlet three 4-3, and the wind cap two 5-2 is arranged on the upper part of the air duct outlet three 4-3; the air source heat pump unit three 1-3, the axial flow fan three 2-3, the pipe section three 3-3, the air duct elbow one 10-1, the air duct elbow two 10-2, the pipe section four 3-4, the air duct outlet three 4-3, and the wind cap two 5-2 constitute the air duct device A2. The air duct device B1 is placed on the double-layer welded steel frame 12-2, and the air duct device A2 is placed on the double-layer welded steel frame 12-1. The beneficial effect of this embodiment is that the air source heat pump units are placed in a double-layer distribution, which meets the layout of the machine room for the number of small and medium units and effectively avoids cross infection of the inlet and outlet air.

[0030] Specific implementation method three, as Figure 3As shown, an air source heat pump multi-layer centralized placement system of the present embodiment is composed of an air source heat pump unit four 1-4, an axial flow fan four 2-4, a pipe section five 3-5, an air duct outlet four 4-4 and a wind cap four 5-4. The air source heat pump unit four 1-4 is connected to the axial flow fan four 2-4, and the axial flow fan four 2-4 is connected to the pipe section five 3-5; the other end of the pipe section five 3-5 is connected to the air duct outlet four 4-4, and the wind cap four 5-4 is arranged on the upper part of the air duct outlet four 4-4; the air source heat pump unit four 1-4, the axial flow fan four 2-4, the pipe section five 3-5, the air duct outlet four 4-4 and the wind cap four 5-4 constitute the air duct device A3. The connection method of the air duct device B2 and the air duct device C is the same as that of the air duct device A3; the air duct device A3 is placed on the multi-layer welded steel frame 13-1, the air duct device B2 is placed on the multi-layer welded steel frame 2 13-2, and the air duct device C is placed on the multi-layer welded steel frame 3 13-3. The beneficial effect of this embodiment is that the air source heat pump units are placed in a multi-layer distribution, which meets the layout of the machine room with a large number of units while reducing the air flow disturbance around the units. The machine room equipment such as the power distribution cabinet can also be placed under the welded steel frame to save space. At the same time, independent air ducts are used for exhaust, which does not affect the inlet air temperature and improves the unit efficiency.

[0031] Working principle:

[0032] Under the action of the axial flow fan 2, the air that extracts heat and cold through the air source heat pump unit 1 enters the duct section 3 through the duct inlet to ensure that the flow direction is unidirectional, and passes through the duct elbow 10 in turn to the duct outlet 4. The wind cap 5 prevents natural rainfall and snowfall from entering the pipeline to affect the operation of the equipment or corrode the inside of the pipeline, thereby ensuring effective and independent exhaust.

[0033] The above description is only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above description. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A double-layer centralized placement system for air source heat pumps, characterized in that: The air source heat pump double-layer centralized placement system comprises air source heat pump unit 2 (1-2), air source heat pump unit 3 (1-3), axial flow fan 2 (2-2), axial flow fan 3 (2-3), pipe section 2 (3-2), pipe section 3 (3-3), pipe section 4 (3-4), air duct elbow 1 (10-1), air duct elbow 2 (10-2), air duct outlet 2 (4-2), air duct outlet 3 (4-3), hood 2 (10-1), air duct elbow 2 (10-2), air duct outlet 3 (4-3), hood 2 (10-2), air duct outlet 4 (4-3), hood 2 (10-3), air duct outlet 4 (4-4), hood 3 (10-4), hood 4 (10-5), hood 5 (10-6), hood 6 (10-7), hood 7 (10-8), hood 8 (10-9), hood 9 (10-11), hood 12 (10-12), hood 13 (10-13), hood 14 (10-14), hood 15 (10-15), hood 16 (10-16), hood 17 (10-17), hood 18 (10-19), hood 29 (10-21), hood 20 (10-22), hood 21 (10-23), hood 24 (10-24), hood 25 (10-25), hood 26 (10-26), hood 3 (10-3), hood 3 (10-3), hood 4 (10-4), hood 5 (10-4), hood 5 (10-4), hood 6 (10-4), hood 7 (10-5), hood 8 (10- (5-2) and hood three (5-3), the air source heat pump unit two (1-2), axial flow fan two (2-2), pipe section two (3-2), air duct outlet two (4-2), hood two (5-2) are connected in sequence from bottom to top, the air source heat pump unit two (1-2), axial flow fan two (2-2), pipe section two (3-2), air duct outlet two (4-2), hood two (5-2) form the air duct device B1; The air source heat pump unit three (1-3), the axial flow fan three (2-3), the pipe section three (3-3), the air duct elbow one (10-1), the air duct elbow two (10-2), the pipe section four (3-4), the air duct air outlet three (4-3), and the wind cap three (5-3) are connected in sequence from bottom to top, the air source heat pump unit three (1-3), the axial flow fan three (2-3), the pipe section three (3-3), the air duct elbow one (10-1), the air duct elbow two (10-2), and the pipe section Four (3-4), the air duct outlet three (4-3), the air hood three (5-3) constitute the air duct device A2, the air duct device B1 is placed on the double-layer welded steel frame two (12-2), the air duct device A2 is placed on the double-layer welded steel frame one (12-1), the double-layer welded steel frame one (12-1) is arranged below the double-layer welded steel frame two (12-2), the air hood two (5-2) and the air hood three (5-3) are located at the same horizontal height, the air duct device A2 has three groups, and the air duct device B1 has three groups.

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