CN106568166A

CN106568166A - Anti-condensation control method and device for combined air conditioner and combined air conditioner

Info

Publication number: CN106568166A
Application number: CN201610953211.6A
Authority: CN
Inventors: 彭延君; 钱沛; 莫湛; 侯坤鹏; 徐艳妮
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2016-10-27
Filing date: 2016-10-27
Publication date: 2017-04-19
Anticipated expiration: 2036-10-27
Also published as: CN106568166B

Abstract

The invention discloses an anti-condensation control method and device for a combined air conditioner and the combined air conditioner, wherein the method comprises the following steps: under the refrigeration mode of the combined air conditioner, acquiring the wet bulb temperature of the environment where the combined air conditioner is located; determining whether the wet bulb temperature is less than or equal to a preset dew point temperature; and when the wet bulb temperature is less than or equal to the dew point temperature, adjusting the opening degree of an air valve and/or a water valve of the combined air conditioner so as to enable the adjusted current wet bulb temperature of the environment to be greater than the dew point temperature, and realizing the anti-condensation control of the combined air conditioner. The scheme of the invention can overcome the defects of large energy consumption, small application range, easy environmental pollution and the like in the prior art, and has the beneficial effects of small energy consumption, large application range and difficult environmental pollution.

Description

Anti-condensation control method and device for combined air conditioner and combined air conditioner

Technical Field

The invention belongs to the technical field of air conditioners, and particularly relates to an anti-condensation control method and device for a combined air conditioner and the combined air conditioner, in particular to the anti-condensation control method for the combined air conditioner, a device corresponding to the method and the combined air conditioner with the device.

Background

The combined air conditioner can be an air conditioning unit formed by combining a plurality of functional sections (such as a primary effect fresh air return section, a surface cooling water retaining section, a heating section, a humidifying section, a secondary air return section, a fan section, a silencing section, an intermediate effect filtering section, a sterilizing section, a heat recovery section and the like), and different air treatment requirements can be realized through the combination of different functional sections. At present, a condensation prevention control method of a combined air conditioner mainly comprises the steps of placing a unit under the condition of high humidity, adopting dehumidification equipment, reducing air outlet water, improving air quantity, reducing refrigeration output and increasing electric auxiliary heat so as to improve air outlet temperature and increase heat preservation of a position easy to condense to control condensation.

This conventional solution has several disadvantages. For example: the method comprises the steps of judging whether condensation is possible according to local summer dry bulb temperature and dew point temperature of different regions; the freezing water type combined air conditioner condensation control system is not arranged; the common heat insulation materials have no replacement requirement, and bacteria are easy to breed when the heat insulation materials are contacted with water for a long time, so that the indoor air quality is polluted.

In the prior art, the defects of large energy consumption, small application range, easy environmental pollution and the like exist.

Disclosure of Invention

The invention aims to provide an anti-condensation control method and device for a combined air conditioner and the combined air conditioner, aiming at overcoming the defects, so as to solve the problem of high energy consumption caused by the adoption of electric auxiliary heating and anti-condensation of dehumidification equipment in the prior art and achieve the effect of reducing energy consumption.

The invention provides an anti-condensation control method of a combined air conditioner, which comprises the following steps: under the refrigeration mode of the combined air conditioner, acquiring the wet bulb temperature of the environment where the combined air conditioner is located; determining whether the wet bulb temperature is less than or equal to a preset dew point temperature; and when the wet bulb temperature is less than or equal to the dew point temperature, adjusting the opening degree of an air valve and/or a water valve of the combined air conditioner so as to enable the adjusted current wet bulb temperature of the environment to be greater than the dew point temperature, and realizing the anti-condensation control of the combined air conditioner.

Optionally, obtaining the wet bulb temperature of the environment where the combined air conditioner is located includes: acquiring the dry bulb temperature of the environment where the combined air conditioner is located, which is detected by a temperature and humidity sensor; calculating to obtain the wet bulb temperature of the environment according to the dry bulb temperature and the calculation coefficient matched with the environment; and/or acquiring the wet bulb temperature of the environment where the combined air conditioner is located, which is detected by a wet bulb temperature sensor.

Optionally, adjusting the opening degree of an air valve and/or a water valve of the combined air conditioner comprises: acquiring a detection result of whether an air valve and/or a water valve exists in an actuator of the combined air conditioner; when the detection result shows that the air valve is arranged in the actuator and the water valve is not arranged, the opening degree of the air valve is increased so as to increase the air output of the combined air conditioner; or when the detection result shows that the air valve is not arranged in the actuator and the water valve is arranged in the actuator, the opening degree of the water valve is reduced so as to reduce the refrigerating capacity of the combined air conditioner; or when the detection result shows that the actuator is provided with the air valve and the water valve, the opening degree of the air valve is firstly opened and then the opening degree of the water valve is closed, or the opening degree of the water valve is firstly closed and then the opening degree of the air valve is opened, or the opening degree of the air valve is opened and then the opening degree of the water valve is closed, so that the combined air conditioner can realize anti-condensation control under the preset energy-saving requirement.

Optionally, the obtaining a detection result of whether an air valve and/or a water valve is/are present in an actuator of the combined air conditioner includes: when the electric cabinet wiring of the combined air conditioner is electrified, obtaining a detection result of whether the air valve and/or the water valve is detected by a controller main board in the electric cabinet; when an air valve detection port of the controller main board feeds back a first preset level, determining that the air valve exists in the actuator; and/or when a water valve detection port of the control mainboard feeds back a second preset level, determining that the water valve is in the actuator.

Optionally, wherein opening the opening degree of the air valve is increased, including: increasing the PWM wave duty ratio of an air valve controller of the combined air conditioner so as to enable the air valve to execute an opening command; and/or, closing the opening degree of the water valve, comprising: and reducing the PWM wave duty ratio of a water valve controller of the combined air conditioner so as to enable the water valve to execute a command of closing.

Optionally, adjusting an opening degree of an air valve and/or a water valve of the combined air conditioner further includes: after the opening degree of the air valve is increased and/or the opening degree of the water valve is decreased, acquiring the current wet bulb temperature of the environment; determining whether the current wet bulb temperature is greater than the dew point temperature; when the current wet bulb temperature is higher than the dew point temperature, keeping the opening degree of the air valve and/or the water valve unchanged at the moment; or when the current wet bulb temperature is less than or equal to the dew point temperature, continuously adjusting the opening degree of the air valve and/or the water valve, and circulating according to the above steps.

In another aspect, the present invention provides an anti-condensation control apparatus for a combined air conditioner, including: the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the wet bulb temperature of the environment where the combined air conditioner is located in the refrigeration mode of the combined air conditioner; a determining unit for determining whether the wet bulb temperature is less than or equal to a preset dew point temperature; and the execution unit is used for adjusting the opening degree of an air valve and/or a water valve of the combined air conditioner when the wet bulb temperature is less than or equal to the dew point temperature, so that the adjusted current wet bulb temperature of the environment is greater than the dew point temperature, and the condensation prevention control of the combined air conditioner is realized.

Optionally, the obtaining unit includes: a temperature and humidity sensor; the acquisition unit is also used for acquiring the dry bulb temperature of the environment where the combined air conditioner is located, which is detected by the temperature and humidity sensor; the calculation module is used for calculating the wet bulb temperature of the environment according to the dry bulb temperature and the calculation coefficient matched with the environment; and/or, a wet bulb temperature sensor; the acquisition unit is further used for acquiring the wet bulb temperature of the environment where the combined air conditioner is located, which is detected by the wet bulb temperature sensor.

Optionally, the execution unit includes: the actuator detection module is used for acquiring a detection result of whether an air valve and/or a water valve exists in an actuator of the combined air conditioner; the air valve adjusting module is used for opening the opening of the air valve to increase the air output of the combined air conditioner when the detection result indicates that the air valve is arranged in the actuator and the water valve is not arranged in the actuator; or, the water valve adjusting module is used for reducing the opening degree of the water valve to reduce the refrigerating capacity of the combined air conditioner when the detection result indicates that the air valve is not arranged in the actuator and the water valve is arranged in the actuator; or, the matching adjusting module is used for firstly opening the opening of the air valve and then closing the opening of the water valve when the detection result shows that the air valve and the water valve are arranged in the actuator, or firstly closing the opening of the water valve and then opening the opening of the air valve, or simultaneously opening the opening of the air valve and closing the opening of the water valve, so that the combined air conditioner realizes condensation prevention control under the preset energy-saving requirement.

Optionally, the actuator detection module comprises: a controller main board; the actuator detection module is further used for acquiring a detection result of whether the air valve and/or the water valve is detected by a controller main board in the electric control box when the electric control box wiring of the combined air conditioner is electrified; when an air valve detection port of the controller main board feeds back a first preset level, determining that the air valve exists in the actuator; and/or when a water valve detection port of the control mainboard feeds back a second preset level, determining that the water valve is in the actuator.

Optionally, wherein the damper adjustment module comprises: the first duty ratio adjusting submodule is used for enabling the PWM wave duty ratio of an air valve controller of the combined air conditioner to be increased so that the air valve executes an increasing command; and/or, a water valve adjustment module comprising: and the second duty ratio adjusting submodule is used for reducing the PWM wave duty ratio of the water valve controller of the combined air conditioner so as to enable the water valve to execute a command of closing.

Optionally, the execution unit further includes: an opening degree maintaining module; the acquiring unit is further configured to acquire the current wet bulb temperature of the environment after the opening degree of the air valve is increased and/or the opening degree of the water valve is decreased; the determining unit is further used for determining whether the current wet bulb temperature is greater than the dew point temperature; the opening keeping module is used for keeping the opening of the air valve and/or the water valve unchanged when the current wet bulb temperature is higher than the dew point temperature; or the opening degree adjusting module is further used for continuously adjusting the opening degree of the air valve and/or the water valve when the current wet bulb temperature is less than or equal to the dew point temperature, and circulating the steps.

In accordance with another aspect of the present invention, there is provided a combined air conditioner, comprising: the anti-condensation control device of the combined air conditioner is characterized in that the condensation control device comprises a condensation control device and a condensation control device.

According to the scheme, whether condensation exists or not is detected in the refrigeration mode, and the temperature is adjusted by adjusting the opening degree of the air valve and the water valve, so that condensation prevention is realized without electric auxiliary heating and dehumidification equipment, the problem that condensation occurs on the local parts of a unit and control equipment due to the fact that refrigeration is prevented under the high-temperature and high-humidity working condition by a chilled water machine room air conditioner or similar chilled water end products can be solved, and air supply, water carrying and electrical potential safety hazards are avoided.

Furthermore, the scheme of the invention can dynamically control the water flow and the power consumption of the pump in an energy-saving manner and reduce the energy consumption by preventing condensation in a manner of adjusting the opening degrees of the air valve and the water valve.

Furthermore, according to the scheme of the invention, condensation is prevented by adjusting the opening degree of the air valve and the water valve, so that the use of heat insulation materials can be reduced, and the possibility of air supply pollution is reduced.

Therefore, according to the scheme provided by the invention, the problem of high energy consumption caused by adopting electric auxiliary heating and dehumidification equipment to prevent condensation in the prior art is solved by detecting whether condensation exists or not and controlling the opening of the electrical elements of the unit to adjust the temperature when condensation exists, so that the defects of high energy consumption, small application range and easy environmental pollution in the prior art are overcome, and the beneficial effects of low energy consumption, large application range and difficult environmental pollution are realized.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

Fig. 1 is a schematic flowchart illustrating an anti-condensation control method of a combined air conditioner according to an embodiment of the present invention;

FIG. 2 is a schematic flow chart illustrating one embodiment of obtaining wet bulb temperature in the method of the present invention;

FIG. 3 is a schematic flow chart illustrating one embodiment of adjusting the opening of the damper and/or water valve in the method of the present invention;

FIG. 4 is a schematic flow chart illustrating one embodiment of the adjustment result for determining the opening degree of the air valve and/or the water valve in the method of the present invention;

FIG. 5 is a schematic structural diagram illustrating an embodiment of a condensation prevention control apparatus of a combined air conditioner according to the present invention;

FIG. 6 is a schematic diagram of an embodiment of an actuator detection module of the apparatus of the present invention;

FIG. 7 is a schematic structural view of one embodiment of a damper adjustment module in the apparatus of the present invention;

FIG. 8 is a schematic diagram of an embodiment of a water valve regulating module in the apparatus of the present invention;

fig. 9 is a schematic view illustrating a working process of the combined air conditioner according to an embodiment of the present invention.

The reference numbers in the embodiments of the present invention are as follows, in combination with the accompanying drawings:

102-an obtaining unit; 1022-temperature and humidity sensor; 1024 — a calculation module; 1026 — wet bulb temperature sensor; 104-a determination unit; 106-an execution unit; 1062-actuator detection module; 10622-controller motherboard; 1064-an air valve adjusting module; 10642-a first duty cycle adjustment submodule; 1066-water valve regulating module; 10662-a second duty cycle adjustment submodule; 1068-a coordination adjustment module; 1070-opening degree keeping module.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

According to an embodiment of the present invention, a method for controlling condensation prevention of a combined air conditioner is provided, as shown in fig. 1, which is a schematic flow chart of an embodiment of the method of the present invention. The anti-condensation control method of the combined air conditioner can comprise the following steps:

in step S110, in a cooling mode of the combined air conditioner, a wet bulb temperature of an environment in which the combined air conditioner is located is obtained.

The combined air conditioner is a combined air conditioner unit, and is sometimes called an air handling unit, which is a commercial big-end air conditioner unit.

Therefore, by acquiring the wet bulb temperature of the environment of the combined air conditioner in the refrigeration mode, accurate and reliable basis can be provided for condensation judgment, and the processing mode is simple and convenient.

In an alternative example, a specific process of acquiring the wet bulb temperature of the environment where the combined air conditioner is located in step S110 may be further described with reference to a flowchart of an embodiment of acquiring the wet bulb temperature in the method of the present invention shown in fig. 2.

And step S210, acquiring the dry bulb temperature of the environment where the combined air conditioner is located, which is detected by a temperature and humidity sensor.

For example: the temperature and humidity sensor senses and detects the temperature TG of the dry bulb.

And S220, calculating to obtain the wet bulb temperature of the environment according to the dry bulb temperature and the calculation coefficient matched with the environment.

Specifically, in step S220, the wet bulb temperature of the environment may be calculated according to the dry bulb temperature, and a first preset calculation coefficient and a second preset calculation coefficient that are adapted to the environment. Namely: the wet bulb temperature is the first preset calculation coefficient x the dry bulb temperature + the second preset calculation coefficient.

For example: the wet bulb temperature TS ═ a × TG + B was calculated, where A, B was constant.

Alternatively, the approximation formula can be used for direct calculation. For example: the calculation can be performed using the formula (dry bulb temperature + wet bulb temperature) × 0.7+40.6 ═ humidity. Of course, other simple formulas are possible.

Therefore, the wet bulb temperature of the environment is calculated according to the calculation coefficient matched with the environment by detecting the dry bulb temperature of the environment, the detection mode is simple and convenient, the calculation reliability is high, and the cost is low.

In an alternative example, another specific process of acquiring the wet bulb temperature of the environment where the combined air conditioner is located in step S110 may include: and acquiring the wet bulb temperature of the environment where the combined air conditioner is located, which is detected by a wet bulb temperature sensor.

Therefore, the wet bulb temperature of the environment is detected through the wet bulb temperature sensor, the detection mode is simple and convenient, and the detection result is accurate and good.

At step S120, it is determined whether the wet bulb temperature is less than or equal to a preset dew point temperature.

For example: the condensation condition is automatically detected by a novel device or equipment under the condition that electric auxiliary heating and dehumidification equipment are not available.

For example: the wet bulb temperature in the refrigeration mode is detected in real time and compared with the local dew point temperature, so that the condensation problem can be controlled in time.

Therefore, the wet bulb temperature and the dew point temperature are compared to realize the judgment of the condensed dew in the air, the judgment mode is simple and convenient, and the judgment result is accurate and good.

At step S130, when the wet bulb temperature is less than or equal to the dew point temperature, adjusting an opening degree of an air valve and/or a water valve of the combined air conditioner, so that the adjusted current wet bulb temperature of the environment is greater than the dew point temperature, thereby implementing anti-condensation control on the combined air conditioner.

For example: and controlling the opening of the electrical elements of the unit to adjust the temperature.

For example: when no electricity is assisted hot and dehumidifier auxiliary assembly, guarantee that the cooling capacity is not less than the design value, through controller control water valve or blast gate aperture, guarantee that wet bulb temperature is greater than dew point temperature, have effectual condensation effect of preventing, can need not the secondary protection and increase sponge spare and prevent the condensation.

Therefore, when the condensation condition is determined, the condensation can be prevented through multiple control modes of the air valve and/or the opening adjustment of the water valve under the condition that no electric auxiliary heating and dehumidification equipment exists, and the flexibility and the reliability of the condensation can be greatly improved.

In an alternative example, a specific process of adjusting the opening degree of the air valve and/or the water valve of the combined air conditioner in step S130 may be further described with reference to a flowchart of an embodiment of adjusting the opening degree of the air valve and/or the water valve in the method of the present invention shown in fig. 3.

Step S310, obtaining a detection result of whether an air valve and/or a water valve exists in an actuator of the combined air conditioner.

For example: when TS is less than or equal to dew point TD, a series of control is executed, and due to different engineering types, whether the electric air valve actuator control (for example, represented by F) and the electric water valve actuator control (for example, represented by W) exist or not needs to be automatically judged.

For example: two detection circuits of an air valve and a water valve are reserved on the controller mainboard, and the existence of the air valve or the water valve is detected through digital quantity.

In an optional specific example, the step S310 of obtaining a detection result of whether an air valve and/or a water valve is/are present in the actuator of the combined air conditioner may include: when the electric cabinet wiring of the combined air conditioner is electrified, obtaining a detection result of whether the air valve and/or the water valve is detected by a controller main board in the electric cabinet; when an air valve detection port of the controller main board feeds back a first preset level, determining that the air valve exists in the actuator; and/or when a water valve detection port of the control mainboard feeds back a second preset level, determining that the water valve is in the actuator.

For example: after an electric cabinet configured for the combined air conditioning unit is electrified, signal acquisition of the unit is carried out, whether an air valve or a water valve exists or not is detected through a controller main board in the electric cabinet, and the detection method comprises the following steps: the mainboard is reserved with two detection circuits of an air valve and a water valve, and whether the air valve or the water valve exists or not is detected through digital quantity.

For example: the detection ports of the air valve or the water valve respectively feed back a high level 1, and the detection ports of the air valve or the water valve do not feed back a low level 0.

Therefore, whether the air valve and/or the water valve exist or not is detected through the controller mainboard, the detection mode is simple and convenient, and the reliability is high.

And S320, when the detection result shows that the air valve is arranged in the actuator and the water valve is not arranged, opening the air valve to increase the air output of the combined air conditioner.

For example: the air valve detection circuit feeds back a high level 1, and when the water valve detection circuit feeds back a low level 0, the following control commands are executed:

the air valve F and the water-free valve W are arranged, whether the wet bulb temperature TS is lower than the dew point temperature TD or not is judged, if the TS is lower than the TD, a signal is fed back to the main board, and the main board executes an opening command of the air valve according to required logic. The opening degree of the air valve is realized by adjusting the duty ratio of the PWM wave, and when the duty ratio of the PWM wave is increased, the air valve executes an opening command; otherwise, controlling the air valve actuator to have no action, namely TS is larger than TD, and ending the command.

Or step S330, when the detection result shows that the air valve is not arranged in the actuator and the water valve is arranged in the actuator, the opening degree of the water valve is reduced so as to reduce the refrigerating capacity of the combined air conditioner.

For example: the air valve detection circuit feeds back a low level 0, and when the water valve detection circuit feeds back a high level 1, the following control commands are executed:

the water valve W and the airless valve F are arranged, if the wet bulb temperature TS is lower than the dew point temperature TD, the flow is controlled by the water valve, and the flow is controlled to be reduced when the refrigerating capacity is ensured to be higher than the designed value, so that the refrigerating capacity is adjusted, and the relative temperature is increased. The opening degree of the water valve is realized by adjusting the duty ratio of the PWM wave, when the duty ratio of the PWM wave is reduced, the water valve executes a turn-down command to make TS greater than TD, and the command is ended; otherwise, the wet bulb temperature TS is larger than the dew point temperature TD and the command is directly finished.

Or step S340, when the detection result indicates that the actuator includes the air valve and the water valve, opening the air valve first and then closing the water valve, or opening the water valve first and then opening the air valve, or simultaneously opening the air valve and closing the water valve, so as to enable the combined air conditioner to achieve condensation prevention control under a preset energy saving requirement.

For example: the air valve detection circuit feeds back a high level 1, and when the water valve detection circuit feeds back the high level 1, the following control commands are executed:

the optimal energy-saving scheme is determined by matching the water valve W and the air valve F, the opening degree of one valve is firstly adjusted (or the opening degrees of two valves are simultaneously adjusted, so that one valve or two valves are selected to be opened under the condition of ensuring energy saving priority) through program control, the TS is larger than the TD, the aim of preventing condensation is fulfilled, and the command is finished.

For example: the wet bulb temperature is not guaranteed to be below the condensation point through a plurality of control schemes, and the wet bulb temperature control system can be used for different areas and different engineering equipment configurations, can prevent condensation of a unit, can prevent condensation requirements of a conveying pipeline, is dynamically controlled through a series of precise judgments, and has the advantage of energy conservation.

Therefore, the problem that the tail end product of a chilled water machine room air conditioner or similar chilled water is prevented from being refrigerated under the working condition of high temperature and high humidity by dynamically controlling the water flow and the power consumption of the pump in an energy-saving manner, so that the local condensation of a unit and control equipment is caused, and the air supply and water carrying as well as the electrical potential safety hazard are avoided; moreover, the use of heat insulation materials can be reduced, the possibility of air supply pollution is reduced, and the environmental protection and humanization are greatly improved.

In an alternative specific example, the opening of the air valve in step S320 or step S340 may include: and increasing the PWM wave duty ratio of an air valve controller of the combined air conditioner so as to enable the air valve to execute an opening command.

For example: the damper opening degree vout [ n ] may be implemented by an internal program PWM duty cycle, that is, the damper opening degree output value vout [ n ] (maximum-minimum) × opening degree duty percentage + minimum, where the maximum value 10230mV corresponds to the voltage 10V at which the maximum duty cycle is output; the minimum value of 2046mV corresponds to a minimum duty cycle output voltage of 2V.

Therefore, the adjustment of the opening degree of the air valve is realized by adjusting the PWM wave duty ratio of the air valve controller, so that the adjustment of the opening degree of the air valve is more accurate and sensitive, and the adjustment mode is simple and convenient.

In an optional specific example, the closing the opening degree of the water valve in step S330 or step S340 may include: and reducing the PWM wave duty ratio of a water valve controller of the combined air conditioner so as to enable the water valve to execute a command of closing.

For example: the opening degree of the air valve and the water valve is controlled by a mainboard program, and the opening degree is proportionally adjusted by the duty ratio of the PWM wave.

For example: the adjustment of the water valve can also be based on experimental data to derive a similar formula.

Therefore, the opening of the water valve can be adjusted more conveniently in a mode of adjusting the PWM wave duty ratio of the water valve controller, and the reliability can be well guaranteed.

In an alternative example, another specific process of adjusting the opening degree of the air valve and/or the water valve of the combined air conditioner in step S130 may be further described with reference to a flowchart of an embodiment of determining the adjustment result of the opening degree of the air valve and/or the water valve in the method of the present invention shown in fig. 4.

And step S410, acquiring the current wet bulb temperature of the environment after opening the air valve and/or closing the water valve.

Step S420, determining whether the current wet bulb temperature is greater than the dew point temperature.

And step S430, when the current wet bulb temperature is higher than the dew point temperature, keeping the opening degree of the air valve and/or the water valve unchanged. Or,

and step S440, when the current wet bulb temperature is less than or equal to the dew point temperature, continuously adjusting the opening degree of the air valve and/or the water valve, and circulating the steps.

For example: and the main board logically executes the opening command of the air valve until TS is larger than TD, and then the opening is kept unchanged.

Therefore, the adjustment is stopped when the adjustment result achieves the anti-condensation purpose by detecting the adjustment result of the opening degree of the air valve and/or the water valve, so that the reliability of the anti-condensation is ensured, and the anti-condensation control effect and the user experience can be well guaranteed; on the other hand, the energy consumption caused by continuous adjustment can be saved, and the energy-saving and environment-friendly effects are also obvious.

In an optional embodiment, before obtaining the wet bulb temperature of the environment where the combined air conditioner is located in step S110, the method may further include: and determining whether the current operation mode of the combined air conditioner is a refrigeration mode or not, and acquiring the wet bulb temperature of the environment when the current operation mode is determined to be the refrigeration mode.

For example: and judging whether the combined air conditioner is in a refrigeration mode.

From this, through the judgement to current operating mode to just carry out the judgement whether there is the condensation condition when current operating mode is the refrigeration mode, can just carry out the judgement whether there is the condensation when the refrigeration mode, guaranteed the reliability and the promptness of preventing condensation control on the one hand, on the other hand has practiced thrift the energy consumption of carrying out the judgement whether there is the condensation under the non-refrigeration mode.

Through a large amount of experimental verifications, adopt the technical scheme of this embodiment, through whether there is the condensation condition in the detection under the refrigeration mode to through the aperture regulating temperature of adjusting blast gate, water valve, with do not have the electricity to assist under hot and dehumidification equipment and realize preventing the condensation, can solve refrigerated water computer lab air conditioner or similar refrigerated water end product and prevent to refrigerate under the high temperature and high humidity operating mode, lead to unit and controlgear local condensation to appear, avoid sending wind and take water and electric potential safety hazard.

According to the embodiment of the invention, the condensation prevention control device of the combined air conditioner corresponding to the condensation prevention control method of the combined air conditioner is also provided. Referring to fig. 5, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The condensation prevention control apparatus of the combined air conditioner may include: an acquisition unit 102, a determination unit 104, and an execution unit 106.

In an example, the obtaining unit 102 may be configured to obtain a wet bulb temperature of an environment in which the combined air conditioner is located in a cooling mode of the combined air conditioner. The specific functions and processes of the acquiring unit 102 are referred to in step S110.

Optionally, the obtaining unit 102 may include: a temperature and humidity sensor 1022 and a calculation module 1024.

In an optional specific example, the obtaining unit 102 may be further configured to obtain a dry bulb temperature of an environment where the combined air conditioner is located, which is detected by the temperature and humidity sensor 1022. The specific functions and processes of the temperature/humidity sensor 1022 are shown in step S210.

In an alternative specific example, the calculating module 1024 may be configured to calculate the wet-bulb temperature of the environment according to the dry-bulb temperature and a calculation coefficient adapted to the environment. The specific functions and processes of the calculating module 1024 are shown in step S220.

Specifically, the calculating module 1024 may calculate the wet bulb temperature of the environment according to the dry bulb temperature, and a first preset calculating coefficient and a second preset calculating coefficient that are adapted to the environment. Namely: the wet bulb temperature is the first preset calculation coefficient x the dry bulb temperature + the second preset calculation coefficient.

Optionally, the obtaining unit 102 may further include: a wet bulb temperature sensor 1026.

In an optional specific example, the obtaining unit 102 may be further configured to obtain a wet bulb temperature of an environment in which the combined air conditioner is located, which is detected by a wet bulb temperature sensor 1026.

In one example, the determining unit 104 may be configured to determine whether the wet bulb temperature is less than or equal to a preset dew point temperature. The specific function and processing of the determination unit 104 are referred to in step S120.

In an example, the execution unit 106 may be configured to adjust an opening degree of an air valve and/or a water valve of the combined air conditioner when the wet bulb temperature is less than or equal to the dew point temperature, so that the adjusted current wet bulb temperature of the environment is greater than the dew point temperature, and thus, the anti-condensation control of the combined air conditioner is achieved. The specific function and processing of the execution unit 106 are shown in step S130.

Optionally, the execution unit 106 may include: an actuator detection module 1062, and at least one of a damper adjustment module 1064, a water valve adjustment module 1066, and a mating adjustment module 1068.

In an alternative specific example, the actuator detection module 1062 may be configured to obtain a detection result of whether an air valve and/or a water valve is/are located in the actuator of the combined air conditioner. The specific functions and processes of the actuator detection module 1062 are shown in step S310.

More optionally, the specific structure of the actuator detection module 1062 may be further described with reference to the schematic structural diagram of an embodiment of the actuator detection module in the apparatus of the present invention shown in fig. 6. The actuator detection module 1062 may include: a controller main board 10622.

In a more optional specific example, the actuator detection module 1062 may be further configured to, when a wiring of an electric cabinet of the combined air conditioner is powered on, obtain a detection result of whether the air valve and/or the water valve is detected by a controller main board 10622 in the electric cabinet. When the air valve detection port of the controller main board 10622 feeds back a first preset level, it is determined that the air valve is in the actuator. And/or when a water valve detection port of the control mainboard feeds back a second preset level, determining that the water valve is in the actuator.

In an optional specific example, the air valve adjusting module 1064 may be configured to, when the detection result indicates that the actuator has the air valve and does not have the water valve, open the air valve to increase an air output of the combined air conditioner. The specific function and processing of the damper adjustment module 1064 are referred to in step S320.

More optionally, the specific structure of the air valve adjusting module 1064 may be further described with reference to the schematic structural diagram of an embodiment of the air valve adjusting module in the apparatus of fig. 7. The damper adjustment module 1064 may include: the first duty cycle adjustment submodule 10642.

In a more specific alternative example, the first duty ratio adjusting sub-module 10642 may be configured to increase the PWM wave duty ratio of the damper controller of the combined air conditioner to make the damper execute an open command.

In an optional specific example, the water valve adjusting module 1066 may be configured to, when the detection result indicates that the actuator does not include the air valve and includes the water valve, close the opening of the water valve to reduce the cooling capacity of the combined air conditioner. The specific function and processing of the water valve adjusting module 1066 are shown in step S330.

More optionally, the specific structure of the water valve adjusting module 1066 may be further described with reference to the schematic structural diagram of an embodiment of the water valve adjusting module in the apparatus of the present invention shown in fig. 8. The water valve adjusting module 1066 may include: a second duty cycle adjustment submodule 10662.

In a more specific alternative example, the second duty cycle adjustment sub-module 10662 may be configured to decrease the PWM wave duty cycle of the water valve controller of the combined air conditioner, so that the water valve executes the command to close.

In an optional specific example, the adjusting module 1068 may be configured to, when the detection result indicates that the actuator includes the air valve and the water valve, first open the air valve and then close the water valve, or first close the water valve and then open the air valve, or simultaneously open the air valve and close the water valve, so that the combined air conditioner realizes condensation prevention control under a preset energy saving requirement. The specific functions and processes of the coordination adjusting module 1068 are shown in step S340.

Optionally, the execution unit 106 may further include: an opening degree holding module 1070.

In an alternative specific example, the obtaining unit 102 may be further configured to obtain the current wet bulb temperature of the environment after the opening degree of the air valve is increased and/or the opening degree of the water valve is decreased. The specific functions and processes of the acquisition unit 102 are also referred to in step S410.

In an alternative specific example, the determining unit 104 may be further configured to determine whether the current wet bulb temperature is greater than the dew point temperature. The specific function and processing of the determination unit 104 are also referred to step S420.

In an alternative specific example, the opening maintaining module 1070 may be configured to maintain the opening of the air valve and/or the water valve when the current wet bulb temperature is greater than the dew point temperature. The specific function and processing of the opening degree holding module 1070 are referred to in step S430.

In an alternative specific example, the air valve adjusting module 1064 may be further configured to continue adjusting the opening degree of the air valve and/or the water valve when the current wet bulb temperature is less than or equal to the dew point temperature, and cycle accordingly. The specific function and processing of the damper adjustment module 1064 are also referred to in step S440.

In an optional embodiment, before acquiring the wet bulb temperature of the environment where the combined air conditioner is located, the acquiring unit 102 may further include: determining, by the determining unit 104, whether a current operation mode of the combined air conditioner is a cooling mode, so as to obtain a wet bulb temperature of the environment when it is determined that the current operation mode is the cooling mode.

Since the processes and functions implemented by the apparatus of this embodiment substantially correspond to the embodiments, principles and examples of the method shown in fig. 1 to 4, the description of this embodiment is not detailed, and reference may be made to the related descriptions in the foregoing embodiments, which are not repeated herein.

Through a large number of tests, the technical scheme of the invention is adopted, condensation is prevented by adjusting the opening degree of the air valve and the water valve, the water flow and the power consumption of the pump can be dynamically controlled in an energy-saving manner, and the energy consumption is reduced.

According to an embodiment of the invention, a combined air conditioner corresponding to the anti-condensation control device of the combined air conditioner is also provided. The combined type air conditioner may include: the anti-condensation control device of the combined air conditioner is characterized in that the condensation control device comprises a condensation control device and a condensation control device.

In one embodiment, the combined air conditioner can automatically detect whether condensation exists or not through a novel device or equipment under the condition without electric auxiliary heating and dehumidifying equipment, and control the opening degree of electrical components of a machine set to adjust the temperature, and the specific process can comprise the following steps:

firstly, after an electric cabinet wiring configured for the combined air conditioning unit is electrified, signal acquisition of the unit is carried out, whether an air valve or a water valve exists is detected through a controller mainboard in the electric cabinet, and the detection method comprises the following steps: the mainboard is reserved with two detection circuits of an air valve and a water valve, and whether the air valve or the water valve exists or not is detected through digital quantity. For example: the detection ports of the air valve or the water valve respectively feed back a high level 1, and the detection ports of the air valve or the water valve do not feed back a low level 0.

And secondly, the opening degrees of the air valve and the water valve are controlled by a mainboard program, and the opening degrees are proportionally adjusted by the duty ratio of the PWM wave.

In an alternative embodiment, referring to the example shown in fig. 9, the automatic control process for preventing condensation of the combined air conditioner may include:

and step 1, judging whether the combined air conditioner is in a refrigeration mode, if so, executing step 2, and if not, finishing the execution.

And 2, detecting the dry bulb temperature TG by a temperature and humidity sensor, calculating the wet bulb temperature TS (A multiplied by TG + B), wherein A, B is constant, executing a series of control when the TS is less than or equal to the dew point temperature TD, and automatically judging whether the electric air valve actuator control (for example, represented by F) and the electric water valve actuator control (for example, represented by W) exist or not due to different engineering selection types.

Optionally, two detection circuits of the air valve and the water valve are reserved on the controller mainboard, and the existence of the air valve or the water valve is detected through digital quantity.

In one example, when the air valve detection circuit feeds back a high level 1 and the water valve detection circuit feeds back a low level 0, the following control commands are executed:

the air valve F and the water-free valve W are arranged, whether the wet bulb temperature TS is lower than the dew point temperature TD or not is judged, if TS is lower than TD, a signal is fed back to the main board, the main board executes an air valve opening degree increasing command according to required logic until TS is higher than TD, and then the opening degree is kept unchanged. The opening degree of the air valve is realized by adjusting the duty ratio of the PWM wave, and when the duty ratio of the PWM wave is increased, the air valve executes an opening command; otherwise, controlling the air valve actuator to have no action, namely TS is larger than TD, and ending the command.

In one example, when the air valve detection circuit feeds back a low level 0 and the water valve detection circuit feeds back a high level 1, the following control commands are executed:

For example: and the water valve executes a turn-off command, so that when TS is larger than TD, the current opening degree is kept unchanged.

In one example, when the air valve detection circuit feeds back a high level 1 and the water valve detection circuit feeds back a high level 1, the following control commands are executed:

Like this, a plurality of control schemes of accessible guarantee that wet bulb temperature is not below the condensation point, can be used for different areas, different engineering equipment configuration simultaneously, when preventing the unit condensation, also can prevent pipeline's condensation requirement, a series of accurate judgement dynamic control has energy-conserving advantage.

It is visible, through the wet bulb temperature under the real-time detection refrigeration mode to carry out the comparison with local dew point temperature, can in time control the condensation problem, do not have electric auxiliary heating and dehumidifier auxiliary assembly, when guaranteeing that the cooling capacity is not less than the design value, control water valve or blast gate aperture through the controller, guarantee that wet bulb temperature is greater than dew point temperature, have effectual condensation effect of preventing, can need not the secondary protection and increase sponge spare and prevent the condensation.

Since the processes and functions of the combined air conditioner of this embodiment are basically corresponding to the embodiments, principles and examples of the devices shown in fig. 5 to 8, the descriptions of this embodiment are not detailed, and refer to the related descriptions in the foregoing embodiments, which are not described herein.

Through a large number of tests, the technical scheme of the invention is adopted, and the condensation is prevented by adjusting the opening degree of the air valve and the water valve, so that the use of heat-insulating materials can be reduced, and the possibility of air supply pollution is reduced.

In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.

The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An anti-condensation control method of a combined air conditioner is characterized by comprising the following steps:

under the refrigeration mode of the combined air conditioner, acquiring the wet bulb temperature of the environment where the combined air conditioner is located;

determining whether the wet bulb temperature is less than or equal to a preset dew point temperature;

and when the wet bulb temperature is less than or equal to the dew point temperature, adjusting the opening degree of an air valve and/or a water valve of the combined air conditioner so as to enable the adjusted current wet bulb temperature of the environment to be greater than the dew point temperature, and realizing the anti-condensation control of the combined air conditioner.

2. The method of claim 1, wherein obtaining the wet bulb temperature of the environment in which the combined air conditioner is located comprises:

acquiring the dry bulb temperature of the environment where the combined air conditioner is located, which is detected by a temperature and humidity sensor;

calculating to obtain the wet bulb temperature of the environment according to the dry bulb temperature and the calculation coefficient matched with the environment;

and/or the presence of a gas in the gas,

and acquiring the wet bulb temperature of the environment where the combined air conditioner is located, which is detected by a wet bulb temperature sensor.

3. The method of claim 1 or 2, wherein adjusting the opening degree of an air valve and/or a water valve of the combined air conditioner comprises:

acquiring a detection result of whether an air valve and/or a water valve exists in an actuator of the combined air conditioner;

when the detection result shows that the air valve is arranged in the actuator and the water valve is not arranged, the opening degree of the air valve is increased so as to increase the air output of the combined air conditioner; or,

when the detection result shows that the air valve is not arranged in the actuator and the water valve is arranged in the actuator, the opening degree of the water valve is reduced so as to reduce the refrigerating capacity of the combined air conditioner; or,

when the detection result shows that the actuator is provided with the air valve and the water valve, the opening degree of the air valve is firstly opened and then the opening degree of the water valve is closed, or the opening degree of the water valve is firstly closed and then the opening degree of the air valve is opened, or the opening degree of the air valve is opened and then the opening degree of the water valve is closed, so that the combined air conditioner can realize anti-condensation control under the preset energy-saving requirement.

4. The method of claim 3, wherein obtaining the detection result of whether the air valve and/or the water valve is/are in the actuator of the combined air conditioner comprises:

when the electric cabinet wiring of the combined air conditioner is electrified, obtaining a detection result of whether the air valve and/or the water valve is detected by a controller main board in the electric cabinet;

when an air valve detection port of the controller main board feeds back a first preset level, determining that the air valve exists in the actuator; and/or when a water valve detection port of the control mainboard feeds back a second preset level, determining that the water valve is in the actuator.

5. The method of claim 3 or 4, wherein,

opening the opening degree of the air valve to a large degree, comprising:

increasing the PWM wave duty ratio of an air valve controller of the combined air conditioner so as to enable the air valve to execute an opening command;

and/or the presence of a gas in the gas,

closing the opening of the water valve to a small degree, comprising:

and reducing the PWM wave duty ratio of a water valve controller of the combined air conditioner so as to enable the water valve to execute a command of closing.

6. The method as claimed in any one of claims 3 to 5, wherein adjusting the opening degree of an air valve and/or a water valve of the combined air conditioner further comprises:

after the opening degree of the air valve is increased and/or the opening degree of the water valve is decreased, acquiring the current wet bulb temperature of the environment;

determining whether the current wet bulb temperature is greater than the dew point temperature;

when the current wet bulb temperature is higher than the dew point temperature, keeping the opening degree of the air valve and/or the water valve unchanged at the moment; or,

and when the current wet bulb temperature is less than or equal to the dew point temperature, continuously adjusting the opening degree of the air valve and/or the water valve, and circulating according to the above steps.

7. The utility model provides a modular air conditioner prevent condensation controlling means which characterized in that includes:

the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the wet bulb temperature of the environment where the combined air conditioner is located in the refrigeration mode of the combined air conditioner;

a determining unit for determining whether the wet bulb temperature is less than or equal to a preset dew point temperature;

and the execution unit is used for adjusting the opening degree of an air valve and/or a water valve of the combined air conditioner when the wet bulb temperature is less than or equal to the dew point temperature, so that the adjusted current wet bulb temperature of the environment is greater than the dew point temperature, and the condensation prevention control of the combined air conditioner is realized.

8. The apparatus of claim 7, wherein the obtaining unit comprises:

a temperature and humidity sensor; the acquisition unit is also used for acquiring the dry bulb temperature of the environment where the combined air conditioner is located, which is detected by the temperature and humidity sensor;

the calculation module is used for calculating the wet bulb temperature of the environment according to the dry bulb temperature and the calculation coefficient matched with the environment;

and/or the presence of a gas in the gas,

a wet bulb temperature sensor; the acquisition unit is further used for acquiring the wet bulb temperature of the environment where the combined air conditioner is located, which is detected by the wet bulb temperature sensor.

9. The apparatus according to claim 7 or 8, wherein the execution unit comprises:

the actuator detection module is used for acquiring a detection result of whether an air valve and/or a water valve exists in an actuator of the combined air conditioner;

the air valve adjusting module is used for opening the opening of the air valve to increase the air output of the combined air conditioner when the detection result indicates that the air valve is arranged in the actuator and the water valve is not arranged in the actuator; or,

the water valve adjusting module is used for reducing the opening degree of the water valve to reduce the refrigerating capacity of the combined air conditioner when the detection result shows that the air valve is not arranged in the actuator and the water valve is arranged in the actuator; or,

and the matching adjusting module is used for opening the opening of the air valve and then closing the opening of the water valve, or opening the opening of the water valve and then opening the opening of the air valve, or simultaneously opening the opening of the air valve and closing the opening of the water valve to enable the combined air conditioner to realize anti-condensation control under the preset energy-saving requirement.

10. The apparatus of claim 9, wherein the actuator detection module comprises:

a controller main board; the actuator detection module is further used for acquiring a detection result of whether the air valve and/or the water valve is detected by a controller main board in the electric control box when the electric control box wiring of the combined air conditioner is electrified; when an air valve detection port of the controller main board feeds back a first preset level, determining that the air valve exists in the actuator; and/or when a water valve detection port of the control mainboard feeds back a second preset level, determining that the water valve is in the actuator.

11. The apparatus of claim 9 or 10, wherein,

an air valve adjustment module comprising:

the first duty ratio adjusting submodule is used for enabling the PWM wave duty ratio of an air valve controller of the combined air conditioner to be increased so that the air valve executes an increasing command;

and/or the presence of a gas in the gas,

a water valve adjustment module comprising:

and the second duty ratio adjusting submodule is used for reducing the PWM wave duty ratio of the water valve controller of the combined air conditioner so as to enable the water valve to execute a command of closing.

12. The apparatus according to one of claims 9-11, wherein the execution unit further comprises: an opening degree maintaining module; wherein,

the acquiring unit is further configured to acquire the current wet bulb temperature of the environment after the opening degree of the air valve is increased and/or the opening degree of the water valve is decreased;

the determining unit is further used for determining whether the current wet bulb temperature is greater than the dew point temperature;

the opening keeping module is used for keeping the opening of the air valve and/or the water valve unchanged when the current wet bulb temperature is higher than the dew point temperature; or,

and the opening adjusting module is also used for continuously adjusting the opening of the air valve and/or the water valve when the current wet bulb temperature is less than or equal to the dew point temperature, and circulating the steps.

13. A combined air conditioner, comprising: the anti-condensation control apparatus of a combined air conditioner as set forth in any one of claims 7 to 12.