A humidification system for industrial air conditioning

Abstract

The present invention relates to the field of air conditioning humidification technology, and in particular to a humidification system for industrial air conditioning, comprising a high-temperature heat pump unit, a high-pressure micro-mist unit and a humidification space, wherein the high-temperature heat pump unit converts a low-grade heat source into high-grade high-temperature hot water, the high-pressure micro-mist unit is connected to the high-temperature heat pump unit to pressurize the high-temperature hot water and convert it into high-temperature hot water mist particles for discharge, the humidification space provides a space for the high-temperature hot water mist particles and air to mix, the high-temperature heat pump unit extends into the humidification space through a high-pressure pipeline and is connected to at least one micro-mist nozzle to spray high-temperature hot water mist particles, and the humidification space is also horizontally introduced with an air source mixed with the hot water mist particles sprayed by the micro-mist nozzle. The humidification system for industrial air conditioning provided by the present invention has a humidification source of high-temperature hot water generated by the high-temperature heat pump unit, and the high-temperature heat pump unit and the high-pressure micro-mist unit are combined and applied to improve the atomization efficiency of the humidifier and significantly reduce the design power of the heating section of the industrial air conditioner.

Description

Technical Field

[0001] The invention relates to the technical field of air conditioning and humidification, and in particular to a humidification system for industrial air conditioning. Background Art

[0002] Humidification is an energy-intensive process and is generally required in demanding industrial air-conditioning systems. Common humidification sources include the following: (1) Electrode-type and electrothermal humidifiers, which use electric energy to heat water, evaporate the water into steam and directly humidify the air. A humidification capacity of 1kg / h requires approximately 0.76kW of electric energy; (2) General high-pressure micro-mist humidifiers, which use electric energy to pressurize water to 5-7MPa, vaporize or atomize the water to humidify the air. A humidification capacity of 1kg / h requires approximately 0.006kW of electric energy. However, because it is an isenthalpic humidification principle, the water mist vaporizes by absorbing the sensible heat of the air. The circulating air of the air-conditioning unit needs to be preheated to above 35°C to achieve a good humidification effect. Heating the circulating air of the air-conditioning unit also requires additional energy; (3) Dry steam humidifiers, which use fuel or electric energy to heat the water in the boiler to generate steam. The steam is filtered and then passed through a steam humidification device to humidify the air. A humidification capacity of 1kg / h requires approximately 1kW of electric energy.

[0003] Based on the above, the humidification system used in industrial air conditioning requires a lot of energy, so it is necessary to find a reliable energy-saving humidification solution for application in industrial air conditioning. Summary of the invention

[0004] In view of the above technical problems, the present invention overcomes the shortcomings of the prior art and provides a humidification system for industrial air conditioning. The humidification source is high-temperature hot water generated by a high-temperature heat pump unit. The high-temperature heat pump unit and the high-pressure micro-mist unit are combined and applied together to improve the atomization efficiency of the humidifier and significantly reduce the design power of the heating section of the industrial air conditioner.

[0005] The present invention provides a humidification system for industrial air conditioning, comprising:

[0006] High-temperature heat pump unit converts low-grade heat source into high-grade high-temperature hot water;

[0007] The high-pressure mist unit is connected to the high-temperature heat pump unit to convert high-quality high-temperature hot water into high-temperature hot water mist particles for discharge; and,

[0008] The high-temperature heat pump unit extends into the humidification space through a high-pressure pipeline and is connected to at least one micro-mist nozzle to spray high-temperature hot water mist particles. The humidification space is also horizontally connected with an air source mixed with the hot water mist particles sprayed by the micro-mist nozzle.

[0009] In the humidification system of industrial air conditioners used in this solution, the humidification source is the high-temperature hot water generated by the high-temperature heat pump unit. The high-temperature hot water enters the high-pressure micro-mist unit, generates pressure, and is sprayed into fine water particles by the micro-mist nozzle of the high-pressure micro-mist humidifier. It enters the air conditioning system to mix with the circulating air, conducts heat and moisture exchange, and continuously humidifies the air, raising the waste heat to high-temperature hot water, providing a high-temperature water source for humidification, and serving as an energy source for high-temperature spray humidification. Combined with the high-temperature and high-pressure micro-mist humidifier, the two units are combined and applied together to improve the atomization efficiency of the humidifier and significantly reduce the design power of the central air conditioning heating section.

[0010] The technical solution further defined in the present invention is:

[0011] Furthermore, the high-temperature heat pump unit includes an evaporator, a compressor and a condenser which are connected in sequence, and a throttle valve and a drying filter are also connected between the evaporator and the condenser.

[0012] Furthermore, the high-pressure micro-mist unit includes a high-pressure plunger pump and a water supply pump respectively connected to the condenser, the high-pressure plunger pump is connected to the high-pressure pipeline, and a low-pressure pressure sensor is provided on the pipeline connecting the condenser and the high-pressure plunger pump, and a high-pressure pressure sensor is provided on the high-pressure pipeline.

[0013] Furthermore, a micro-mist nozzle is connected to the micro-mist nozzle, and the angle formed by the nozzle center axis of the micro-mist nozzle and the incident direction of the air source is 40-60°. The micro-mist nozzle sprays high-temperature hot water mist particles upward at an angle to form a conical hot water mist particle injection area. In the hot water mist particle injection area, a parabolic trajectory is formed due to the action of gravity. Similarly, after the horizontal air source contacts the high-temperature hot water mist particles, it also continues to mix with the high-temperature hot water mist particles below in a parabolic shape, thereby extending the mixing contact time between the air source and the high-temperature hot water mist particles and improving the mixing effect.

[0014] Furthermore, the micro-mist nozzles are distributed in an array point shape in a vertical plane, and the vertical plane is perpendicular to the incident direction of the air source.

[0015] Furthermore, a water baffle and an exhaust fan are provided in the humidification space, and the exhaust fan is arranged away from the air source to form a negative pressure so that the air after heat and moisture exchange is discharged through the water baffle and the exhaust fan in sequence.

[0016] Furthermore, a suction mechanism is also provided in the humidification space, which includes a symmetrically arranged air suction hood and a confluence hood, and two arc-shaped wind shields are vertically connected between the air suction hood and the confluence hood. The two wind shields are respectively located at the edges of the two hoods, so that a suction mixing space is formed between the two for the air source and the micro-mist nozzle to spray high-temperature hot water mist particles.

[0017] Furthermore, a plurality of S-shaped first spoilers are arranged in a circumferential shape inside the air suction hood body to improve the mixing effect of the gas passing near the inner surface of the air suction hood body.

[0018] Furthermore, a plurality of vertical S-shaped second spoilers are staggeredly distributed in the two wind shields along their length direction, so as to further improve the mixing effect on the circumferential side of the suction mixing space and make the gas drawn upward in the suction mixing space form a swirl.

[0019] Furthermore, the air suction hood and the converging hood are both truncated cone-shaped hollow cylinders that have the function of converging flows, and an exhaust fan is connected to the top of the air suction hood.

[0020] The beneficial effects of the present invention are:

[0021] (1) In the humidification system provided by the present invention, the humidification source is the high-temperature hot water generated by the high-temperature heat pump unit. The high-temperature hot water enters the high-pressure micro-mist unit, generates pressure, and is sprayed into fine water particles by the micro-mist nozzle of the high-pressure micro-mist humidifier. The water enters the air-conditioning system and mixes with the circulating air to exchange heat and moisture. The air is continuously humidified, and the waste heat is increased to high-temperature hot water. This provides a high-temperature water source for humidification, and also serves as an energy source for high-temperature spray humidification. The high-pressure micro-mist humidifier is combined with the two units by isenthalpic humidification, which can improve the atomization efficiency of the humidifier and significantly reduce the design power of the heating section of the industrial air conditioner.

[0022] (2) The central axis of the micro-mist nozzle in the humidification system of the present invention forms a certain inclination angle with the incident direction of the air source, so that the micro-mist nozzle sprays high-temperature hot water mist particles upward at an angle, forming a conical hot water mist particle spraying area. In the hot water mist particle spraying area, a parabolic trajectory is formed due to the action of gravity. At the same time, after the horizontal air source contacts the high-temperature hot water mist particles, it also continues to mix with the high-temperature hot water mist particles below in a parabolic shape, thereby extending the mixing contact time between the air source and the high-temperature hot water mist particles and improving the mixing effect;

[0023] (3) In the suction mixing space formed by the suction mechanism in the humidification system of the present invention, the airflow passing through the second spoiler and the first spoiler in sequence forms a swirl, which accelerates the collision and mixing between the air from the air source and the high-temperature hot water mist particles, greatly improving the efficiency of heat and moisture exchange, thereby improving the humidification efficiency of the air conditioning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of a humidification system in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure in the humidification space in an embodiment of the present invention;

[0026] Figure 3This is a schematic diagram of the structure of the suction mechanism in the humidification space in an embodiment of the present invention;

[0027] Figure 4 Schematic diagram of the side structure of the suction mechanism in the humidification space in an embodiment of the present invention;

[0028] Figure 5 It is a schematic diagram of the internal structure of the air suction cover and the wind shield in a specific embodiment of the present invention;

[0029] Figure 6 A schematic diagram of airflow trajectory of heat and moisture exchange in a specific embodiment of the present invention;

[0030] In the figure: 10, high-temperature heat pump unit; 11, evaporator; 12, compressor; 13, condenser; 14, throttle valve; 15, drying filter; 20, high-pressure micro-mist unit; 21, water supply pump; 22, high-pressure plunger pump; 23, low-pressure pressure sensor; 24, high-pressure pressure sensor; 30, humidification space; 31, high-pressure pipeline; 32, micro-mist nozzle; 33, micro-mist nozzle; 33a, hot water mist particle injection area; 34, nozzle bracket; 35, water baffle; 40, air source; 50, nozzle center axis; 61, air suction cover; 61a, first spoiler; 62, converging cover; 63, wind baffle; 63a, second spoiler; 64, exhaust fan. DETAILED DESCRIPTION

[0031] The humidification system for industrial air conditioning provided in this embodiment is as follows Figure 1 As shown, it includes a high-temperature heat pump unit 10, a high-pressure micro-mist unit 20 and a humidification space 30. Specifically, the high-temperature heat pump unit 10 mainly converts low-grade heat source into high-grade high-temperature hot water, and the high-pressure micro-mist unit 20 is connected to the high-temperature heat pump unit 10 to pressurize the high-grade high-temperature hot water and convert it into high-temperature hot water mist particles for discharge. The humidification space 30 provides a space for the high-temperature hot water mist particles and air to mix. The high-temperature heat pump unit 10 extends into the humidification space 30 through a high-pressure pipeline 31 and is connected to at least one micro-mist nozzle 32 to spray high-temperature hot water mist particles. The humidification space 30 also has an air source 40 horizontally introduced into it to mix with the hot water mist particles sprayed from the micro-mist nozzle 32.

[0032] It can be understood that the high-temperature heat pump unit 10, as a device that can absorb heat from a low-temperature heat source and raise it to a high temperature for use, has a wide range of application prospects in the field of energy utilization. In this embodiment, it mainly includes an evaporator 11, a compressor 12 and a condenser 13 connected in sequence, and a throttle valve 14 and a drying filter 15 are also connected between the evaporator 11 and the condenser 13. The working principle is mainly based on the principles of thermodynamics and refrigeration cycles, and its working process can be summarized into four main steps: evaporation, compression, condensation and expansion.

[0033] Evaporation process: In the evaporator 11, the low-temperature and low-pressure refrigerant liquid absorbs heat from the low-temperature heat source (such as ambient air, groundwater, etc.), thereby evaporating into a low-temperature and low-pressure refrigerant gas. In this process, the refrigerant absorbs heat from the low-temperature heat source; Compression process: The refrigerant gas in the evaporator 11 is compressed by the compressor 12, and the temperature and pressure are increased. The compressed refrigerant gas becomes a high-temperature and high-pressure gas, ready for the next condensation process; Condensation process: The high-temperature and high-pressure refrigerant gas enters the condenser 13, releases heat through the cooling medium (such as water, air, etc.) in the condenser 13, and condenses into a high-temperature and high-pressure refrigerant liquid. In this process, the refrigerant releases heat to the high-temperature heat source; Expansion process: The condensed high-temperature and high-pressure refrigerant liquid passes through an expansion valve or a capillary tube and other devices, and the pressure and temperature are reduced, and it returns to the evaporator 11 for the next round of circulation. Through the cycle of these four steps, the high-temperature heat pump unit 10 achieves the purpose of absorbing heat from the low-temperature heat source and raising it to a high temperature for use.

[0034] On the other hand, the high-pressure mist unit 20 in this embodiment includes a high-pressure plunger pump 22 and a water supply pump 21 respectively connected to the condenser 13, the high-pressure plunger pump 22 is connected to the high-pressure pipeline 31, and a low-pressure pressure sensor 23 is provided on the pipeline connecting the condenser 13 and the high-pressure plunger pump 22, and a high-pressure pressure sensor 24 is provided on the high-pressure pipeline 31. Figure 2 As shown, the other end of the high-pressure pipeline 31 is connected to three groups of micro-mist nozzles 32 through a straight pipe, and the position is fixed by a vertical nozzle bracket 34, and a water baffle 35 is also vertically arranged on one side. Each micro-mist nozzle 32 is connected to a micro-mist nozzle 33, and the angle α formed by the nozzle center axis 50 of each micro-mist nozzle 33 and the incident direction of the air source 40 is 45°. The micro-mist nozzle 33 sprays high-temperature hot water mist particles upward in an inclined manner to form a conical hot water mist particle injection area 33a. In the hot water mist particle injection area 33a, a parabolic trajectory is formed due to gravity. Similarly, after the air source 40 in the horizontal direction contacts the high-temperature hot water mist particles, it also continues to mix with the high-temperature hot water mist particles below in a parabolic shape, prolonging the mixing, contact and collision time between the air source 40 and the high-temperature hot water mist particles, and improving the mixing effect.

[0035] The high-temperature heat pump unit 10 absorbs the waste heat above 40°C through the evaporator 11, and provides the working fluid vaporization energy for the heat pump system; the water in another circulation system is heated from about 20°C to high-temperature hot water of about 50°C in the condenser 13; the high-temperature hot water enters the pressurization system, generates a pressure of 5-7MPa, and is sprayed by the micro-mist nozzle 33 as fine water particles of 3-10μm (i.e., high-temperature hot water mist particles), enters the air-conditioning system to mix and collide with the air source 40, and performs heat and moisture exchange to continuously humidify the air. The particles that cannot be vaporized will diffuse with the air flow because of their small size, and after absorbing the environmental waste heat, they will continue to vaporize and become water vapor to achieve the environmental humidification effect. Due to the fine particles, high water temperature and high internal energy, the humidification efficiency will reach more than 90%, reducing the water consumption of the spray humidifier. The waste heat or waste heat described in the present invention can be low-grade heat energy in the form of industrial waste heat (wastewater or waste gas) or geothermal energy.

[0036] In some other embodiments, Figure 2 As shown, the micro-mist nozzles 32 can also be multiple and distributed in an array in a vertical plane, and the vertical plane is perpendicular to the incident direction of the air source 40, that is, the vertical plane is parallel to the nozzle bracket 34. At the same time, a water baffle 35 and an exhaust fan 64 are vertically arranged in the humidification space 30, and the exhaust fan 64 is arranged away from the side of the air source 40 to form a negative pressure so that the air after the heat and moisture exchange on the left side of the water baffle 35 is discharged to the right through the water baffle 35 and the exhaust fan 64 in turn, so that a negative pressure section of the air conditioning system is formed on the left side of the exhaust fan 64 in the humidification space 30, which is used to discharge to the workshop or room. It should be noted that the installation setting of the exhaust fan 64 in this embodiment is only one example, and the exhaust fan 64 can also be installed in other ways.

[0037] As one of the optional embodiments of the present invention, see Figure 3 , Figure 4 A suction mechanism is also provided in the humidification space 30, and the suction mechanism specifically includes a symmetrically arranged air suction hood body 61 and a confluence hood body 62, both of which are truncated cone-shaped hollow cylinders, and an exhaust fan 64 is connected to the top of the air suction hood body 61, and a water outlet pipe is connected to the bottom of the confluence hood body 62 for recovering condensed water, and two arc-shaped wind shields 63 are vertically connected between the air suction hood body 61 and the confluence hood body 62, and the two wind shields 63 are respectively located at the edges of the two hoods, so that a suction mixing space is formed between the two for the air source 40 and the micro-mist nozzle 32 to spray high-temperature hot water mist particles, and when the air source 40 and the hot water mist particles sprayed from the micro-mist nozzle 32 contact and mix in the suction mixing space, heat and moisture exchange is carried out, and the exhaust fan 64 on the top of the air suction hood body 61 transports the humidified gas after the heat and moisture exchange to other air-conditioning system pipelines.

[0038] In some other embodiments, Figure 5As shown, a plurality of S-shaped first spoilers 61a are arranged in a circumferential shape in the air suction hood 61, and a plurality of vertical S-shaped second spoilers 63a are arranged in a staggered manner along the length direction of the two wind shields 63, and the deflection directions of the first spoiler 61a and the second spoiler 63a are the same or similar. When the exhaust fan 64 on the air suction hood 61 is in operation, the high-temperature hot water mist particles sprayed by the air source 40 and the micro-mist nozzle 32 contact, collide and mix in the suction mixing space to exchange heat and moisture, so that the airflow passing through the second spoiler 63a and the first spoiler 61a in sequence forms a vortex, which accelerates the collision and mixing between the air from the air source 40 and the high-temperature hot water mist particles, greatly improving the efficiency of heat and moisture exchange, thereby improving the humidification efficiency of the air conditioning system. Figure 6 Schematic diagram of the path of the humidified mixed gas (i.e., humidified air) after heat and moisture exchange in this embodiment.

[0039] In addition to the above embodiments, the present invention may also have other implementation modes. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the present invention.

Claims

1. A humidification system for industrial air conditioning, characterized in that: include: A high-temperature heat pump unit (10) converts low-quality heat source into high-quality high-temperature hot water; The high-pressure micro-mist unit (20) is connected to the high-temperature heat pump unit (10) to convert high-quality high-temperature hot water into high-temperature hot water mist particles under pressure for discharge; and A humidifying space (30), wherein the high-pressure micro-mist unit (20) extends into the humidifying space (30) through a high-pressure pipeline (31) and is connected to at least one micro-mist nozzle (32) for spraying high-temperature hot water mist particles, and an air source (40) for mixing with the hot water mist particles sprayed by the micro-mist nozzle (32) is also horizontally introduced into the humidifying space (30); The micro-mist nozzle (32) is connected to a micro-mist nozzle (33), and the angle formed by the nozzle center axis (50) of the micro-mist nozzle (33) and the incident direction of the air source (40) is 40-60 degrees; A suction mechanism is also provided in the humidification space (30), the suction mechanism comprising a symmetrically arranged air suction hood (61) and a flow collecting hood (62), and two arc-shaped wind shields (63) are vertically connected between the air suction hood (61) and the flow collecting hood (62), the two wind shields (63) being respectively located at the edges of the two hoods, so that a suction mixing space is formed between the two for the air source (40) and the micro-mist nozzle (32) to spray high-temperature hot water mist particles; A plurality of S-shaped first spoilers (61a) are arranged in a circumferential shape in the air suction hood (61), and a plurality of vertical S-shaped second spoilers (63a) are staggeredly distributed in the two wind shields (63) along their length direction.

2. The humidification system according to claim 1, characterized in that: The high-temperature heat pump unit (10) comprises an evaporator (11), a compressor (12), and a condenser (13) which are connected in sequence, and a throttle valve (14) and a drying filter (15) are also connected between the evaporator (11) and the condenser (13).

3. The humidification system according to claim 2, characterized in that: The high-pressure fine mist unit (20) comprises a high-pressure plunger pump (22) and a water supply pump (21) respectively connected to the condenser (13); the high-pressure plunger pump (22) is connected to the high-pressure pipeline (31); a low-pressure pressure sensor (23) is provided on the pipeline connecting the condenser (13) and the high-pressure plunger pump (22); and a high-pressure pressure sensor (24) is provided on the high-pressure pipeline (31).

4. The humidification system according to claim 1, characterized in that: The micro-mist nozzles (32) are distributed in an array point shape in a vertical plane, and the vertical plane is perpendicular to the incident direction of the air source (40).

5. The humidification system according to claim 1, characterized in that: The air suction hood (61) and the converging hood (62) are both truncated cone-shaped hollow cylinders, and the top of the air suction hood (61) is connected to an exhaust fan (64).

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