WO2017133326A1

WO2017133326A1 - Air conditioner and humidification method thereof

Info

Publication number: WO2017133326A1
Application number: PCT/CN2016/109539
Authority: WO
Inventors: 陈鸿
Original assignee: 华为技术有限公司
Priority date: 2016-02-04
Filing date: 2016-12-12
Publication date: 2017-08-10
Also published as: EP3401611A4; CN105716188A; EP3401611A1; EP3401611B1

Abstract

An air conditioner, comprising a fan (6), a humidification assembly, and a heat exchanger (7), wherein the fan (6) is provided at an air outlet of the heat exchanger (7); the humidification assembly comprises a circulating water tank (4), a humidification module (1), and a water distribution tray (8). The circulating water tank (4) is used for holding water; the humidification module (1) comprises a wet film covering an air inlet of the heat exchanger (7), and further comprises a water distributor; the water distribution tray (8) is located below the humidification module (1) and used for recycling water dripping from the wet film; water in the water distribution tray (8) flows into the circulating water tank (4) by means of a water return pipe. Also disclosed is a humidification method of the air conditioner.

Description

Air conditioner and humidification method thereof

The present application claims priority to Chinese Patent Application No. 201610080117.4, entitled "A Method of Air Conditioning and Its Humidification Method", filed on February 4, 2016, the entire contents of which is incorporated herein by reference. .

Technical field

The invention relates to the technical field of humidifying equipment, in particular to an air conditioner and a humidifying method thereof.

Background technique

For places with high temperature and humidity requirements, the use of precision special air conditioners not only enables the equipment to operate in a good and reliable working environment, but also prolongs the service life of the equipment and greatly reduces the operating cost.

For row-level precision air conditioners, it forms a closed space with the server room server. Through the refrigeration and humidification functions of the air conditioner, the server is provided with a constant temperature and humidity operation environment to ensure efficient and stable operation of the equipment.

In most row-level precision air conditioners, the humidification operation is usually unstable, the water quality requirements are high, and the maintenance work is large in the later stage. Therefore, a new humidification method is urgently needed to solve the humidification problem of the row-level precision air conditioner.

The humidification method used in the prior art is an electrode humidification method. The working principle of the electrode type humidifier is that water is used as a conductor, and alternating current is supplied to the two electrodes. After the water contacts the electrode, the electrode forms a current loop through the water to heat the water. To boil, the evaporated water vapor is directly sent into the channel by the fan through the pipeline, thereby achieving air humidification.

However, when the above humidification method is adopted, since the conductivity of water affects the humidification efficiency, the water quality is required to be high, and the power in the humidification process is large, resulting in a higher unit PUE. In addition, the high-temperature steam mixed with the cold air causes partial steam condensation, which leads to a decrease in humidification efficiency. At the same time, the long-term operation of the water storage tank is easy to scale, affecting the stable operation of the system, the overall service life is short, and the maintenance workload is large.

Summary of the invention

The invention provides an air conditioner and a humidifying method thereof for improving the humidifying effect and improving the service life of the humidifying component.

In a first aspect, an air conditioner is provided, the air conditioner including a fan, a humidifying component, and a heat exchanger, wherein

The fan is disposed at an air outlet of the heat exchanger;

The humidification assembly includes: a circulating water tank for holding water;

a humidification module comprising a wet film covering the air inlet of the heat exchanger, further comprising a water separator, wherein a water outlet of the water separator faces the wet film, and a water inlet of the water separator passes through the pipeline and the a circulating water tank is connected, and the pipeline is provided with a circulating water pump for pumping water in the circulating water tank into the water separator;

a water dividing tray located below the humidifying module for recovering water dripping from the wet film, and the water dividing tray is connected with a water return pipe communicating with the circulating water tank, in the water dividing tray Water flows into the circulating water tank through the return water pipe.

In combination with the above first aspect, in a first possible implementation, the water distribution tray is disposed at a lower portion of the wet film and the width of the water distribution tray is greater than or equal to a width of the wet film, or A water dividing tray is disposed at a lower portion of the heat exchanger and the wet film and a width of the water dividing tray is greater than or equal to a sum of a width of the heat exchanger and a width of the wet film.

In conjunction with the first possible implementation of the first aspect, in a second possible implementation, the water outlet of the water separator is directed toward the wet film and is connected to an upper portion of the wet film so that The water flowing out of the water outlet of the water separator flows from the upper part of the wet film to the lower part, so that the water is evenly distributed on the wet film.

In conjunction with the second possible implementation of the first aspect, in a third possible implementation, the water inlet of the circulating water tank is connected with a water inlet pipe, and the water inlet pipe is provided with an on-off valve.

In conjunction with the third possible implementation manner of the foregoing first aspect, in a fourth possible implementation, the switching valve is a solenoid valve;

a liquid level detecting device is disposed in the circulating water tank;

A control device is further included, the control device controlling the solenoid valve to open when the water level detected by the liquid level detecting device is lower than a set water level until the detected water level of the circulating water tank reaches a set water level.

In conjunction with the above first aspect, in a fifth possible implementation, the water distribution tray is located below the heat exchanger and the humidification module, and is configured to collect condensed water of the heat exchanger and the Humidification module dripping water.

In combination with the first aspect to the fifth possible implementation of the first aspect, in a sixth possible implementation, the wet film has a thickness of 20 to 200 mm.

In a second aspect, an air conditioning humidification method is provided, the air conditioner being the air conditioner described above, and the humidification method includes the following steps:

When humidification is required, the air drawn by the fan in the air conditioner first passes through the wet film to be humidified and then enters the heat exchanger.

In combination with the foregoing second aspect, in a first possible implementation, the method further includes: detecting water level of the circulating water tank when starting humidification, and directly starting humidification when the water level of the circulating water tank reaches a set water level; When the water level of the circulating water tank does not reach the set water level, the solenoid valve is controlled to open, and water is injected into the circulating water tank until the set position is reached, and then humidification is started.

According to the air conditioner provided by the first aspect and the humidifying method provided by the second aspect, the water pumped from the circulating water tank to the humidifying module forms a uniform water film on the wet film during specific humidification. When the dry wind passes through the wet film material The dry air and the wet wet film surface have a large area of contact, thereby achieving a large amount of water evaporation, the heat exchanger heats the water film on the wet film, and a large amount of water molecules are sent into the space to be humidified with the wind. To increase the humidity of the air to achieve the purpose of humidification. The humidification effect is achieved by the cooperation of the humidifying module and the heat exchanger, and the humidifying method is provided in the humidifying manner of the prior art, and the humidifying component provided in the embodiment is disposed at the air inlet of the heat exchanger to avoid The condensation of water vapor and the above-mentioned humidification method have lower requirements on water quality, and do not form scale in the circulating water tank, thereby improving the stability of the humidifying assembly and improving the service life of the humidifying assembly.

DRAWINGS

1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;

2 is another schematic structural diagram of an air conditioner according to an embodiment of the present invention;

FIG. 3 is a control block diagram of a humidifying component according to an embodiment of the present invention.

Reference mark:

1-Humidification module 2-Level detection device 3-Circulating pump

4-Circulating Water Tank 5-Inlet Water Pipe 51-Solenoid Valve

6-fan 7-heat exchanger 8-divided water tray

detailed description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative and not restrictive.

An embodiment of the present invention provides a humidifying component for an air conditioner, the humidifying component comprising:

a circulating water tank for holding water;

The humidification module comprises a wet film covering the air inlet of the heat exchanger, and further comprises a water separator, and the water outlet of the water separator is directed to the wet film, and the water inlet of the water separator is connected to the circulating water tank through the pipeline, and the pipeline is arranged There is a circulating water pump that pumps the water in the circulating water tank into the water separator;

The water dividing tray is located below the humidifying module for recovering the water dripping from the wet film, and the water dividing tray is connected with a return water pipe connected with the circulating water tank, and the water in the water dividing tray flows into the circulating water tank through the return water pipe.

When specifically humidifying, the water pumped from the circulating water tank to the humidifying module forms a uniform water film on the wet film. When the fan draws air, the heat exchanger heats the water film on the wet film, and the dried wind passes through the wet film material. The dry air and the wet wet film surface have a large area of contact, thereby achieving a large amount of water evaporation. A large amount of water molecules are sent to the space to be humidified with the wind, so that the humidity of the air is increased, thereby achieving the purpose of humidification. The humidification effect is achieved by the cooperation of the humidifying module and the heat exchanger, and the humidifying method is provided in the humidifying manner of the prior art, and the humidifying component provided in the embodiment is disposed at the air inlet of the heat exchanger to avoid The condensation of water vapor, and the above-mentioned humidification method, the water quality requirements are relatively It is low and does not form scale in the circulating water tank, which improves the stability of the humidifying assembly and improves the service life of the humidifying assembly.

In addition, as shown in FIG. 1, FIG. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention.

An embodiment of the present invention further provides an air conditioner, including a fan 6, a humidifying component, and a heat exchanger 7, wherein

The fan 6 is disposed at an air outlet of the heat exchanger 7;

The humidifying assembly includes: a circulating water tank 4 for holding water;

The humidification module 1 includes a wet film covering the air inlet of the heat exchanger 7, and further includes a water separator, and the water outlet of the water separator is directed to the wet film, and the water inlet of the water separator is connected to the circulating water tank 4 through the pipeline, and The pipeline is provided with a circulating water pump 3 for pumping water in the circulating water tank 4 into the water separator;

The water distribution tray 8 is located below the humidification module 1 for recovering the water dripping from the wet film, and the water distribution tray 8 is connected with a water return pipe communicating with the circulating water tank 4, and the water in the water distribution tray 8 passes through the water return pipe. Flows into the circulating water tank 4.

When specifically humidifying, the water pumped from the circulating water tank 4 to the humidifying module 1 forms a uniform water film on the wet film. When the fan draws air, the heat exchanger 7 heats the water film on the wet film, and the dried wind passes. The wet film material, the dry air and the wet wet film surface have a large area of contact, thereby achieving a large amount of water evaporation. A large amount of water molecules are sent to the space to be humidified with the wind, so that the humidity of the air is increased, thereby achieving the purpose of humidification. The humidification effect is achieved by the cooperation of the humidification module 1 and the heat exchanger 7. The humidification module provided in this embodiment is disposed at the air inlet of the heat exchanger 7 according to the humidification mode in the prior art. At the same time, the condensation of water vapor is avoided, and the above-mentioned humidification method is adopted, the water quality requirement is low, and scale is not formed in the circulating water tank 4, the stability of the humidifying component is improved, and the service life of the humidifying component is improved. The humidifying module 1 is disposed in the casing of the heat exchanger 7, which reduces the space occupied by the entire air conditioner and facilitates miniaturization.

Further, the water dividing tray is disposed at a lower portion of the wet film and the width of the water dividing tray is greater than or equal to a width of the wet film, or the water dividing tray is disposed at the heat exchanger and the wet film The lower portion and the width of the water dividing tray are greater than or equal to the sum of the width of the heat exchanger and the width of the wet film.

Further, the water outlet of the water separator faces the wet film and is connected to an upper portion of the wet film. The water flowing out of the water outlet of the water separator flows from the upper portion of the wet film to the lower portion, so that the water is evenly distributed on the wet film.

In order to facilitate the understanding of the structure and working principle of the air conditioner provided by the embodiment of the present invention, a detailed description thereof will be made below with reference to the accompanying drawings.

With reference to FIG. 1, the air conditioner provided in this embodiment mainly includes a structure such as a fan 6, a humidifying assembly, and a heat exchanger 7, and the placing direction shown in FIG. 1 is a reference direction. The humidifying module 1 is placed at the air inlet of the heat exchanger 7, and the circulating water tank 4 is placed below the humidifying module 1.

The humidifying unit provided in this embodiment is used to form a water film. When in use, the fan 6 on the air conditioner performs air extraction, and the air first flows through the humidifying module 1 for humidification, and then flows to the heat exchanger 7 for heating. The humidification module 1 includes a wet film disposed at the air inlet of the air conditioner heat exchanger 7 and a water separator, and the water outlet of the water separator faces the wet film, and the water inlet of the water separator passes through the pipe with the circulating water pump 3 and the circulating water tank. 4 connections. Specifically, the wet film humidification physical principle is equal humidification, and the wet film material is a corrugated plate-shaped overlapping polymer compound. When the water in the circulating water tank 4 is transported to the water trap at the top of the humidifying module 1, the passage is passed. The water separator evenly drains the water to the top of the wet membrane. The water separator ensures that the water is evenly distributed onto the wet membrane material, and the water penetrates down the wet membrane material to wet all the layers inside the wet membrane while being wetted by the membrane material. Absorbs to form a uniform water film. When the dry wind passes through the wet film material, the dry air and the wet wet film surface have a large area of contact, thereby achieving a large amount of water evaporation. A large amount of water molecules are sent to the space to be humidified with the wind, so that the humidity of the air is increased, thereby achieving the purpose of humidification. The above humidification method solves the problem that the current electrode humidification has high water quality and easy scaling, and the maximum power consumption of the wet film humidification is 10W, the energy consumption of the comparative electrode humidification consumption is more than 95%, and the PUE value of the unit is lowered; The membrane has a long service life of two years, which saves nearly 80% of the cost of maintenance. And through the heat exchanger in the air conditioner to blow, the maximum power consumption of wet film humidification is 10W, the energy consumption of the comparative electrode humidification consumption is more than 95%, and the PUE value of the unit is reduced.

The thickness of the wet film may be different thicknesses, and may be specifically set according to the space inside the heat exchanger 7 to ensure that the humidification module 1 can be placed into the structure of the heat exchanger 7. As a preferred embodiment, the thickness of the wet film provided by the embodiment of the present invention is between 20 and 200 mm, and specifically, such as 20 mm, 50 mm, 100 mm, 150 mm, 200 mm, etc., between 20 and 200 mm. The thickness between the two. By reducing the wet film thickness, reducing the wet film mesh aperture, ensuring that the wet film contact area is constant, and the humidification efficiency is the same, the resistance of the same humidification amount is reduced, which is beneficial to the overall refrigeration capacity of the heat exchanger 7.

In order to facilitate the water supply to the humidification module 1, the circulating water tank 4 is disposed in the heater in the embodiment, which is connected to the humidification module 1 through a pipe with a circulating water pump 3, and when the humidification is required, the circulating water tank 4 is extracted by the water circulation water pump 3. The water inside is applied to the humidifying module 1. Moreover, when the water in the circulating water tank 4 provided in this embodiment is used up, water can be manually added. As a preferred embodiment, the water inlet of the circulating water tank 4 provided in the embodiment is connected with the inlet pipe 5, and the inlet pipe 5 is provided with an on-off valve. Specifically, the water inlet pipe 5 is connected to a pump or a water supply system which is a water supply system which is common in the prior art. When water is required to be supplied, the circulating water tank 4 is supplied with water through a water supply system or a pump, thereby improving the efficiency of the water supply.

In the air conditioner provided in this embodiment, in order to reduce the waste of water resources, the air conditioner in the embodiment is provided with a water distribution tray 8 disposed under the humidification module 1 for recovering the humidification module 1 Water dripping on. Specifically, when the water separator is used to drip the water onto the wet film, the water cannot be completely immersed in the humidifying film. In order to avoid waste of water resources, the present embodiment sets a water dividing water for collecting dripping water under the humidifying module 1. a water tray 8 for holding the dripping water, and a water outlet is provided at the bottom of the water distribution tray 8, and the water outlet is connected with a water return pipe extending into the circulating water tank 4, thereby The collected water can be returned to the circulating water tank 4, and the water is recycled.

As a preferred technical solution. The water dividing tray 8 is located below the heat exchanger 7 and the humidifying module 1, and is used for collecting the condensed water of the heat exchanger 7 and the water dripping from the humidifying module 1. That is, the water distribution tray 8 can also recover the condensed water formed on the heat exchanger 7, so that the condensed water formed by the heat exchanger 7 on the air conditioner can be used for humidification, thereby improving the utilization rate of water resources, and at the same time, the air conditioning unit is condensed. Water recycling, increasing the sensible heat ratio of cooling up to 100%.

In addition, in order to improve the automatic operation efficiency of the entire device, the humidification module provided in this embodiment is provided with a system for automatic water supply. Specifically, the on-off valve on the inlet pipe 5 uses a solenoid valve 51, and a liquid is disposed in the circulation water tank 4. The position detecting device 2; furthermore, a control device is provided, which controls the solenoid valve 51 to open when the water level detected by the liquid level detecting device 2 is lower than the set water level The water level to the detected circulating water tank 4 reaches the set water level.

In the specific operation, when the air conditioning operating parameter monitoring humidity is lower than the set value, the air conditioner starts the “humidification” working condition, and after receiving the command, when the liquid level detecting signal has no output signal at the high liquid level, the electromagnetic valve 51 is opened to the circulating water tank 4 When water is added, when the liquid level rises to a high liquid level, the solenoid valve 51 is closed, the circulating water pump 3 is turned on, and the circulating water pump 3 in the circulating water tank 4 is introduced into the water separator, humidified by the humidifying membrane, and the unvaporized water flows back to the circulating water tank 4 In the next cycle, after the humidification parameter reaches the setting, the circulating water pump 3 is turned off and the humidification condition is completed.

When the humidity of the air conditioning operation parameter is lower than the set value, the air conditioner starts the “humidification” working condition. After receiving the command, when the liquid level detection signal has a high liquid level output signal, the circulating water pump 3 is turned on, and the circulating water pump in the circulating water tank 4 is 3 In the water separator, humidification is performed through the humidifying membrane, and the unvaporized water flows back to the circulating water tank 4 to enter the next cycle. After the humidification parameter reaches the setting, the circulating water pump 3 is turned off, and the humidification condition is completed.

Further, as shown in FIG. 2, the water dividing tray is disposed at a lower portion of the wet film and the width of the water dividing tray is greater than or equal to a width of the wet film, and one side of the water dividing tray A wall is disposed between the heat exchanger and the wet film, or the water dividing tray is disposed at a bottom of the heat exchanger and extends to a space containing the bottom of the wet film.

In addition, the embodiment further provides an air conditioning humidification method, the air conditioner is the air conditioner described above, and the humidification method includes the following steps:

When humidification is required, the air drawn by the fan 6 in the air conditioner first passes through the wet film to be humidified and then enters the heat exchanger 7.

In the above embodiment, the wind blown by the fan 6 is first humidified by the wet film forming the water film, and the humidified air is again introduced into the heat exchanger, thereby increasing the humidity in the air. With the humidification method, the humidification module provided in this embodiment is disposed at the air inlet of the heat exchanger 7 in comparison with the humidification mode in the prior art, thereby avoiding condensation of water vapor, and adopting the above humidification method, the water quality requirement is low. The scale is not formed in the circulating water tank 4, the stability of the humidifying assembly is improved, and the service life of the humidifying assembly is improved. The humidifying module 1 is disposed in the casing of the heat exchanger 7, which reduces the space occupied by the entire air conditioner and facilitates miniaturization.

As shown in FIG. 3, FIG. 3 shows the control logic using the above humidification method. When the above humidification method is adopted, when there is a humidification demand, that is, when the air conditioning operation parameter monitoring humidity is lower than the set value, the air conditioner starts the "humidification" working condition, and before starting the humidification, the water level of the circulating water tank 4 is detected, in the circulating water tank 4 When the water level reaches the set water level, the humidification is started directly; when the water level of the circulating water tank 4 does not reach the set water level, the control solenoid valve 51 is opened, water is injected into the circulating water tank 4 until the set position is reached, and then humidification is started; After that, the humidity of the air is detected, and when the air humidity reaches the standard, the circulating water pump 3 is controlled to stop humidification, and the entire humidification process is completed.

A person skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

An air conditioner, comprising: a fan, a humidifying component, and a heat exchanger, wherein

The fan is disposed at an air outlet of the heat exchanger;

The humidification assembly includes: a circulating water tank for holding water;

a humidification module comprising a wet film covering the air inlet of the heat exchanger, further comprising a water separator, and a water outlet of the water separator facing the wet film and connected to an upper portion of the wet film, the water dividing The water inlet of the device is connected to the circulating water tank through a pipeline, and the pipeline is provided with a circulating water pump for pumping water in the circulating water tank into the water separator;

a water dividing tray located below the humidifying module for recovering water dripping from the wet film, and the water dividing tray is connected with a water return pipe communicating with the circulating water tank, in the water dividing tray Water flows into the circulating water tank through the return water pipe.
The air conditioner according to claim 1, wherein said water dividing tray is disposed at a lower portion of said wet film and said water dividing tray has a width greater than or equal to a width of said wet film, or said water dividing tray A lower portion of the heat exchanger and the wet film is disposed and a width of the water distribution tray is greater than or equal to a sum of a width of the heat exchanger and a width of the wet film.
The air conditioner according to claim 1 or 2, wherein the water outlet of the water separator faces the wet film and is connected to an upper portion of the wet film so that water flowing out of the water outlet of the water separator is wet. The upper portion of the membrane flows to the lower portion so that water is evenly distributed on the wet film.
The air conditioner according to claim 3, wherein the water inlet of the circulating water tank is connected to a water inlet pipe, and the water inlet pipe is provided with an on-off valve.
The air conditioner according to claim 3, wherein

The switching valve is a solenoid valve;

a liquid level detecting device is disposed in the circulating water tank;

A control device is further included, the control device controlling the solenoid valve to open when the water level detected by the liquid level detecting device is lower than a set water level until the detected water level of the circulating water tank reaches a set water level.
The air conditioner according to claim 3, wherein said water dividing tray is located below said heat exchanger and said humidifying module, and is configured to collect condensed water of said heat exchanger and said humidifying module dripping Water.
The air conditioner according to any one of claims 3 to 6, wherein the wet film has a thickness of 20 to 200 mm.
An air conditioning humidification method, characterized in that the air conditioner is the air conditioner according to claim 2, and the humidification method comprises the following steps:

When humidification is required, the air drawn by the fan in the air conditioner is humidified by the wet film before entering the heat exchanger.
The humidification method according to claim 8, further comprising: detecting a water level of the circulating water tank when the humidification is started, and directly starting humidification when the water level of the circulating water tank reaches a set water level; When the water level does not reach the set water level, the solenoid valve is controlled to open, and water is injected into the circulating water tank until the set position is reached, and then humidification is started.