CN109458709B - Air humidity adjusting device and control method - Google Patents
Air humidity adjusting device and control method Download PDFInfo
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- CN109458709B CN109458709B CN201811290105.XA CN201811290105A CN109458709B CN 109458709 B CN109458709 B CN 109458709B CN 201811290105 A CN201811290105 A CN 201811290105A CN 109458709 B CN109458709 B CN 109458709B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
Abstract
The invention discloses an air humidity adjusting device and a control method, wherein the method comprises the following steps: s1: detecting indoor temperature t1 and outdoor temperature t 2; s2: according to the detected indoor temperature t1 and the detected outdoor temperature t2, judging preset conditions met by the indoor temperature t1 and the outdoor temperature t 2; s3: according to preset conditions met by the indoor temperature t1 and the outdoor temperature t2, the control assembly controls the dehumidification equipment to selectively work in a temperature-rising dehumidification mode, an isothermal dehumidification mode or a temperature-reducing dehumidification mode. The adjusting device utilizing the method can control the working mode of the dehumidifying equipment according to the indoor and outdoor measured temperatures, so that the indoor temperature and humidity can be kept relatively constant all the time, and the comfort of users is greatly improved.
Description
Technical Field
The invention relates to the field of air conditioning, in particular to an air humidity conditioning device and a control method.
Background
At present, the existing dehumidification regulation method of a dehumidifier is usually based on that a low-temperature heat exchanger is placed in an air duct, and the flow of a refrigerant passing through the low-temperature heat exchanger is regulated according to the actually measured humidity, so as to increase or reduce the amount of precipitated condensed water, and achieve the purpose of regulation and control.
To current dehumidification adjustment method, if want quick dehumidification, only can be through increasing refrigerant flow in order to increase the dehumidification portion, must lead to the air-out temperature to hang down excessively, the phenomenon of dewing appears in the air-out department on the one hand appearing easily, and the comfortable impression of heat of on the other hand air-out department also can be extremely poor. When the flow rate of the refrigerant is reduced, although the outlet air is improved, the dehumidification amount is reduced, and a long time is required for reducing the room humidity to the target humidity, so that the original purpose of the dehumidifier cannot be achieved.
The present invention solves the above problems by providing a control (dehumidification) method and a new air humidity adjustment device (dehumidification apparatus).
Disclosure of Invention
In view of the above, according to one aspect of the present invention, there is provided a control method of an air humidity adjusting apparatus, the method including the steps of:
s1: detecting indoor temperature t1 and outdoor temperature t 2;
s2: according to the detected indoor temperature t1 and the detected outdoor temperature t2, judging preset conditions met by the indoor temperature t1 and the outdoor temperature t 2;
s3: according to preset conditions met by the indoor temperature t1 and the outdoor temperature t2, the control assembly controls the dehumidification equipment to selectively work in a temperature-rising dehumidification mode, an isothermal dehumidification mode or a temperature-reducing dehumidification mode.
Preferably, in step S2: the preset conditions comprise a temperature rise preset condition, an isothermal preset condition and a temperature reduction preset condition.
Preferably, in step S3: if the indoor temperature t1 and the outdoor temperature t2 meet the preset temperature-rising condition, the control assembly controls the dehumidifying equipment to work in a temperature-rising dehumidifying mode; if the indoor temperature t1 and the outdoor temperature t2 are judged to meet the isothermal preset condition, the control assembly controls the dehumidification equipment to work in an isothermal dehumidification mode; if the indoor temperature t1 and the outdoor temperature t2 meet the preset cooling condition, the control assembly controls the dehumidifying equipment to work in a cooling and dehumidifying mode.
Preferably, in the step S2, the determining whether the indoor temperature t1 and the outdoor temperature t2 satisfy a warming preset condition includes the following steps:
s21: comparing the indoor temperature t1 with an indoor reference value t10, a first preset threshold value t1a and a second preset threshold value t1b, and comparing the outdoor temperature t2 with an outdoor reference value t20, a third preset threshold value t2a and a fourth preset threshold value t2b, wherein t10< t1a < t1b, and t20< t2a < t2 b;
s22: if t1 is not less than t1a, t1 is not less than t1b, t2 is not less than t20, and t2 is not less than t2a, judging that the indoor temperature t1 and the outdoor temperature t2 meet the preset temperature-increasing condition; or if t1 is not less than t10, t1 is not less than t1a, t2 is not less than t2a, and t2 is not less than t2b, it is determined that the indoor temperature t1 and the outdoor temperature t2 meet the preset temperature-increasing condition.
Preferably, in the step S2, the step of determining whether the indoor temperature t1 and the outdoor temperature t2 satisfy the isothermal preset condition includes the steps of:
p21: comparing the indoor temperature t1 with an indoor reference value t10, a first preset threshold value t1a and a second preset threshold value t1b, and comparing the outdoor temperature t2 with a third preset threshold value t2a, a fourth preset threshold value t2b and a fifth preset threshold value t2c, wherein t10< t1a < t1b, and t2a < t2b < t2 c;
p22: if t1 is greater than t1a, t1 is not less than t1b, t2 is greater than t2a, and t2 is not less than t2b, judging that the indoor temperature t1 and the outdoor temperature t2 meet the isothermal preset condition; or if t1 is not less than t10, t1 is not less than t1b, t2 is greater than t2b, and t2 is not less than t2c, judging that the indoor temperature t1 and the outdoor temperature t2 meet the isothermal preset condition.
Preferably, in the step S2, the determining whether the indoor temperature t1 and the outdoor temperature t2 satisfy a preset cooling condition includes the following steps:
f21: comparing the indoor temperature t1 with an indoor reference value t10, a first preset threshold value t1a and a second preset threshold value t1b, and comparing the outdoor temperature t2 with a third preset threshold value t2a, a fourth preset threshold value t2b and a fifth preset threshold value t2c, wherein t10< t1a < t1b, and t2a < t2b < t2 c;
f22: if t1> t1b, judging that the indoor temperature t1 and the outdoor temperature t2 meet the preset cooling condition; or t1 is more than or equal to t10, t1 is less than t1b, and t2 is greater than t2c, and the indoor temperature t1 and the outdoor temperature t2 are judged to meet the preset cooling condition.
Preferably, the dehumidification device comprises a compressor, a condenser, a variable-function heat exchanger and an evaporator connected in series through a refrigerant circuit, and a first expansion valve and a second expansion valve arranged between the condenser and the variable-function heat exchanger and between the variable-function heat exchanger and the evaporator; the dehumidification equipment also comprises an air inlet channel, an air exhaust channel, an air inlet fan arranged in the air inlet channel and an air exhaust fan arranged in the air exhaust channel; the evaporator and the variable-function heat exchanger are disposed in the air intake passage, and the variable-function heat exchanger is disposed downstream of the evaporator in an airflow flowing direction.
Preferably, in step S3: according to preset conditions met by the indoor temperature t1 and the outdoor temperature t2, the control component controls the opening degrees of the first expansion valve and the second expansion valve, so that the variable-function heat exchanger is adjusted to work in a condensation mode or an evaporation mode, and the dehumidification equipment is enabled to selectively work in a temperature-rising dehumidification mode, an isothermal dehumidification mode or a temperature-lowering dehumidification mode.
Preferably, in step S3, if the indoor temperature t1 and the outdoor temperature t2 satisfy preset temperature-increasing conditions, the control module controls the first expansion valve to be opened without throttling, and controls the second expansion valve to be throttled, so that the variable function heat exchanger operates in the condensing mode to control air to enter the room at a temperature higher than the indoor ambient temperature.
Preferably, in step S3, if the indoor temperature t1 and the outdoor temperature t2 satisfy isothermal preset conditions, the control module controls the opening degrees of the first expansion valve and the second expansion valve such that both the first expansion valve and the second expansion valve perform partial throttling, and adjusts the operation of the variable function heat exchanger in the condensing mode or the evaporating mode according to the magnitude of the indoor temperature t1 to control air to enter the room under conditions equal to the indoor ambient temperature.
Preferably, in step S3, if the indoor temperature t1 and the outdoor temperature t2 satisfy a preset cooling condition, the control module controls the first expansion valve to perform throttling while controlling the second expansion valve to be opened without throttling, and the variable function heat exchanger operates in an evaporation mode to control air to enter the room at a temperature lower than the indoor ambient temperature.
Compared with the existing dehumidification method, the working mode of the dehumidification equipment is controlled according to the indoor and outdoor measured temperatures, so that the indoor temperature and humidity can be kept relatively constant all the time, and the comfort of a user is greatly improved.
A second object of the invention is to propose a dehumidification plant.
According to the dehumidification device provided by the embodiment of the invention, the dehumidification device comprises a compressor, a condenser, a variable-function heat exchanger and an evaporator which are connected in series through a refrigerant loop, as well as a first expansion valve arranged between the condenser and the variable-function heat exchanger and a second expansion valve arranged between the variable-function heat exchanger and the evaporator; the dehumidifier also comprises an air inlet channel, an air exhaust channel, an air inlet fan arranged in the air inlet channel and an air exhaust fan arranged in the air exhaust channel; the evaporator and the variable-function heat exchanger are arranged in the air intake channel, and the variable-function heat exchanger is arranged downstream of the evaporator in the airflow flowing direction; the dehumidification device further comprises a control assembly, wherein the control assembly is used for controlling the opening degrees of the first expansion valve and the second expansion valve so that the variable-function heat exchanger can selectively work in a condensation mode or an evaporation mode.
Preferably, the dehumidifier further comprises a temperature detection component, the temperature detection component can detect an indoor temperature t1 and an outdoor temperature t2, and the control component controls the dehumidification device to work in a heating dehumidification mode, an isothermal dehumidification mode or a cooling dehumidification mode according to the indoor temperature t1 and the outdoor temperature t 2.
Preferably, the control assembly is preset with preset conditions, and the preset conditions comprise a heating preset condition, an isothermal preset condition and a cooling preset condition; if the indoor temperature t1 and the outdoor temperature t2 meet the preset temperature-rising condition, the control assembly controls the dehumidifying equipment to work in a temperature-rising dehumidifying mode; if the indoor temperature t1 and the outdoor temperature t2 are judged to meet the isothermal preset condition, the control assembly controls the dehumidification equipment to work in an isothermal dehumidification mode; if the indoor temperature t1 and the outdoor temperature t2 meet the preset cooling condition, the control assembly controls the dehumidifying equipment to work in a cooling and dehumidifying mode.
Preferably, if the indoor temperature t1 and the outdoor temperature t2 satisfy the preset temperature-increasing condition, the control module controls the first expansion valve to be opened without throttling, and controls the second expansion valve to be throttled, so that the variable-function heat exchanger operates in a condensing mode to control air to enter the room at a temperature higher than the indoor ambient temperature.
Preferably, if the indoor temperature t1 and the outdoor temperature t2 satisfy the isothermal preset condition, the control module controls the opening degrees of the first expansion valve and the second expansion valve to allow both the first expansion valve and the second expansion valve to perform partial throttling, and adjusts the variable function heat exchanger to operate in a condensing mode or an evaporating mode according to the magnitude of the indoor temperature to control air to enter the room under the condition equal to the indoor ambient temperature.
Preferably, if the indoor temperature t1 and the outdoor temperature t2 satisfy the preset cooling condition, the control component controls the first expansion valve to throttle, and controls the second expansion valve to open without throttling, and the variable-function heat exchanger works in an evaporation mode.
Preferably, the preset temperature-rise condition is as follows: t1 is more than or equal to t1a, t1 is less than or equal to t1b, t2 is more than or equal to t20, and t2 is less than or equal to t2 a; or t1 is more than or equal to t10, t1 is less than or equal to t1a, t2 is more than or equal to t2a, and t2 is less than or equal to t2 b.
Preferably, the isothermal preset conditions are as follows: t1 is more than t1a, t1 is less than or equal to t1b, meanwhile, t2 is more than t2a, and t2 is less than or equal to t2 b; or if t1 is more than or equal to t10, t1 is less than or equal to t1b, and t2 is more than t2b, and t2 is less than or equal to t2 c.
Preferably, the preset cooling condition is as follows: t1> t1 b; alternatively, t1 ≧ t10, and t1< t1b, while t2> t2 c.
Compared with the existing dehumidification equipment (air humidity adjusting device), the dehumidification device solves the problem of uncontrollable outlet air temperature and improves the thermal comfort of the dehumidification effect only by changing the dehumidification structure, the heat exchanger function and the control method under the condition of not increasing the cost.
Other features and aspects of the present invention will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the invention and, together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of a dehumidification apparatus control method according to an embodiment of the present invention;
FIG. 2 is a block diagram of a dehumidification apparatus in accordance with one embodiment of the present invention;
Detailed Description
Various exemplary embodiments, features and aspects of the present invention will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In some instances, methods, procedures, components, and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Referring to fig. 1, a method for controlling an air humidity control device includes the following steps:
and S1, detecting the indoor temperature t1 and the outdoor temperature t 2.
Specifically, when the dehumidifying apparatus is operated, the dehumidifying apparatus detects an indoor temperature t1 and an outdoor temperature t 2. It is understood here that the dehumidification device may be a real-time detection or an intermittent detection.
S2: and judging the preset conditions met by the indoor temperature t1 and the outdoor temperature t2 according to the detected indoor temperature t1 and outdoor temperature t 2.
And comparing and judging the indoor temperature t1 and the outdoor temperature t2 with preset conditions through the detected indoor temperature t1 and the detected outdoor temperature t2, judging the preset conditions met by the indoor temperature t1 and the outdoor temperature t2, and performing control action according to the met preset conditions. The preset conditions comprise a temperature rise preset condition, an isothermal preset condition and a temperature drop preset condition, and the three preset conditions are not mutually crossed and overlapped, namely the indoor temperature t1 and the outdoor temperature t2 only meet one preset condition at the same time.
And S3, controlling the dehumidifier to selectively work in a heating dehumidification mode, an isothermal dehumidification mode or a cooling dehumidification mode by the control component according to preset conditions met by the indoor temperature t1 and the outdoor temperature t 2.
Specifically, if the indoor temperature t1 and the outdoor temperature t2 are judged to meet the preset temperature-rise condition, the control assembly controls the dehumidifying equipment to work in the temperature-rise dehumidifying mode; if the indoor temperature t1 and the outdoor temperature t2 are judged to meet the isothermal preset condition, the control assembly controls the dehumidification equipment to work in an isothermal dehumidification mode; if the indoor temperature t1 and the outdoor temperature t2 meet the preset cooling condition, the control assembly controls the dehumidifying equipment to work in a cooling and dehumidifying mode.
In step S2, determining whether the indoor temperature t1 and the outdoor temperature t2 satisfy a warming preset condition includes the steps of:
s21: the indoor temperature t1 is compared with an indoor reference value t10, a first preset threshold value t1a and a second preset threshold value t1b, and the outdoor temperature t2 is compared with an outdoor reference value t20, a third preset threshold value t2a and a fourth preset threshold value t2b, wherein t10< t1a < t1b, and t20< t2a < t2 b.
S22: if t1 is not less than t1a, t1 is not less than t1b, t2 is not less than t20, and t2 is not less than t2a, judging that the indoor temperature t1 and the outdoor temperature t2 meet the preset temperature-increasing condition; or if t1 is not less than t10, t1 is not less than t1a, t2 is not less than t2a, and t2 is not less than t2b, it is determined that the indoor temperature t1 and the outdoor temperature t2 meet the preset temperature-increasing condition.
In step S2, determining whether the indoor temperature t1 and the outdoor temperature t2 satisfy isothermal preset conditions includes the steps of:
p21: the indoor temperature t1 is compared with an indoor reference value t10, a first preset threshold value t1a and a second preset threshold value t1b, and the outdoor temperature t2 is compared with a third preset threshold value t2a, a fourth preset threshold value t2b and a fifth preset threshold value t2c, wherein t10< t1a < t1b, and t2a < t2b < t2 c.
P22: if t1 is greater than t1a, t1 is not less than t1b, t2 is greater than t2a, and t2 is not less than t2b, judging that the indoor temperature t1 and the outdoor temperature t2 meet the isothermal preset condition; or if t1 is not less than t10, t1 is not less than t1b, t2 is greater than t2b, and t2 is not less than t2c, judging that the indoor temperature t1 and the outdoor temperature t2 meet the isothermal preset condition.
In step S2, determining whether the indoor temperature t1 and the outdoor temperature t2 satisfy a preset cooling condition includes the following steps:
f21: comparing the indoor temperature t1 with an indoor reference value t10, a first preset threshold value t1a and a second preset threshold value t1b, and comparing the outdoor temperature t2 with a third preset threshold value t2a, a fourth preset threshold value t2b and a fifth preset threshold value t2c, wherein t10< t1a < t1b, and t2a < t2b < t2 c;
f22: if t1> t1b, judging that the indoor temperature t1 and the outdoor temperature t2 meet the preset cooling condition; or if t1 is not less than t10, t1 is less than t1b, and t2 is greater than t2c, judging that the indoor temperature t1 and the outdoor temperature t2 meet the preset cooling condition.
The indoor reference value t10, the first preset threshold value t1a, the second preset threshold value t1b, the outdoor reference value t20, the outdoor third preset threshold value t2a, the outdoor fourth preset threshold value t2b and the fifth preset threshold value t2c are parameter values stored in the control module in advance.
In a preferred embodiment, referring to fig. 2, the dehumidifying apparatus 100 includes a compressor 10, a condenser 20, a variable-function heat exchanger 30, and an evaporator 40 connected in series by a refrigerant circuit, and a first expansion valve 51 disposed between the condenser 20 and the variable-function heat exchanger 30 and a second expansion valve 52 disposed between the variable-function heat exchanger 30 and the evaporator 40; the dehumidifying device 100 further comprises an air inlet channel 60 and an air exhaust channel 70, and an air inlet fan 62 arranged in the air inlet channel 60 and an air exhaust fan 72 arranged in the air exhaust channel 70; the evaporator 40 and the variable-function heat exchanger 30 are disposed in the intake air passage 60, and the variable-function heat exchanger 30 is disposed downstream of the evaporator 40 in the airflow direction.
In step S3: according to preset conditions met by the indoor temperature t1 and the outdoor temperature t2, the control component controls the opening degrees of the first expansion valve 51 and the second expansion valve 52, so as to adjust the variable-function heat exchanger 30 to work in a condensation mode or an evaporation mode, and enable the dehumidification device 100 to selectively work in a temperature-rising dehumidification mode, an isothermal dehumidification mode or a temperature-lowering dehumidification mode.
Specifically, in step S3, if the indoor temperature t1 and the outdoor temperature t2 satisfy the preset temperature-increasing condition, the control module controls the first expansion valve to open without throttling, and controls the second expansion valve to throttle, so that the variable-function heat exchanger operates in the condensing mode. If the indoor temperature t1 and the outdoor temperature t2 meet the isothermal preset condition, the control assembly controls the opening degrees of the first expansion valve and the second expansion valve to enable the first expansion valve and the second expansion valve to perform partial throttling, and the variable-function heat exchanger is adjusted to work in a condensation mode or an evaporation mode according to the indoor temperature so as to control air to enter the room under the condition equal to the indoor environment temperature. If the indoor temperature t1 and the outdoor temperature t2 meet the preset cooling condition, the control assembly controls the first expansion valve to throttle, and controls the second expansion valve to open without throttling, and the variable-function heat exchanger works in an evaporation mode.
According to the dehumidification method of the present invention, the evaporation or condensation mode of the variable function heat exchanger 30 is controlled and switched according to the actual indoor and outdoor temperatures, so that the indoor temperature is not too cold during dehumidification, and thus, the indoor temperature can be rapidly increased when the temperature is too low, thereby ensuring comfort and considering dehumidification efficiency.
Fig. 2 is a schematic structural diagram of a dehumidifying apparatus 100 according to an embodiment of the present invention. As shown in fig. 2, the dehumidifying apparatus 100 includes a compressor 10, a condenser 20, a variable-function heat exchanger 30, and an evaporator 40 connected in series by a refrigerant circuit, and a first expansion valve 51 disposed between the condenser 20 and the variable-function heat exchanger 30 and a second expansion valve 52 disposed between the variable-function heat exchanger 30 and the evaporator 40.
The dehumidifying apparatus 100 further includes an air intake passage 60 and an air exhaust passage 70, and an air intake fan 62 disposed in the air intake passage and an air exhaust fan 72 disposed in the air exhaust passage 70. The air intake fan 62 is used for driving air flow to be conveyed from the outside to the indoor, and the air exhaust fan 72 is used for exhausting indoor air to the outdoor, so that the indoor air is updated, and a comfortable air environment is maintained.
The evaporator 40 and the variable-function heat exchanger 30 are disposed in the intake air passage 60, and the variable-function heat exchanger 30 is disposed downstream of the evaporator 40 in the airflow direction. The air flow entering from the outside is first cooled and dehumidified by the evaporator 40 and then passes through the variable-function heat exchanger 30.
The dehumidifying apparatus 100 further includes a control assembly for controlling opening degrees of the first and second expansion valves 51 and 52, thereby adjusting an evaporation or condensation amount of the condenser 20, the variable-function heat exchanger 30, and the evaporator 40. In the present embodiment, the variable-function heat exchanger 30 has a condensing mode and an evaporating mode, and the variable-function heat exchanger 30 can be selectively operated in the condensing mode or the evaporating mode by adjusting the opening degrees of the first expansion valve 51 and the second expansion valve 52.
For clarity of description, it is defined that the direction of flow along the gas stream is downstream and the direction of flow against the gas stream is upstream.
The evaporator 40 and the variable-function heat exchanger 30 are arranged in the air inlet channel 60, the variable-function heat exchanger 30 is arranged at the downstream of the evaporator 40 in the airflow flowing direction, and in the air inlet channel 60, airflow flows in from an air inlet, firstly passes through the evaporator 40 to be cooled and dehumidified, then passes through the variable-function heat exchanger 30, and finally is sent into a room from an air supply outlet.
In this embodiment, the condenser 20 and the compressor 10 are disposed in the discharge passage 70, the condenser 20 is disposed downstream of the compressor 10, and the air flow introduced from the room passes through the compressor 10 first, thereby dissipating heat from the compressor 10. The compressor 10 is disposed in the exhaust duct 70, and the airflow in the exhaust duct 70 is effectively utilized to accelerate the heat dissipation of the compressor 142.
Preferably, the control assembly is disposed within the exhaust channel 70. The compressor 10 and the control assembly are arranged in the exhaust channel 70, air flow in the exhaust channel 70 is effectively utilized, heat dissipation of the compressor 10 and the control assembly is accelerated, meanwhile, air circulating in the exhaust channel 70 comes from processed indoor air, the temperature, humidity and cleanliness of the air are generally maintained at a better level, a heat exchange effect is guaranteed, and equipment corrosion is not easily caused.
The dehumidifying apparatus 100 comprises a temperature detecting component, the temperature detecting component can detect indoor temperature t1 and outdoor temperature t2, and the control component controls the dehumidifying apparatus 100 to work in a temperature-rising dehumidifying mode or an isothermal dehumidifying mode or a temperature-lowering dehumidifying mode according to the indoor temperature t1 and the outdoor temperature t 2.
Specifically, the control assembly is preset with preset conditions for controlling the dehumidification device to work, and the preset conditions comprise a temperature rise preset condition, an isothermal preset condition and a temperature reduction preset condition. If the indoor temperature t1 and the outdoor temperature t2 meet the preset temperature-rising condition, the control assembly controls the dehumidifying equipment to work in a temperature-rising working mode; if the indoor temperature t1 and the outdoor temperature t2 are judged to meet the isothermal preset condition, the control assembly controls the dehumidifying equipment to work in an isothermal working mode; if the indoor temperature t1 and the outdoor temperature t2 meet the preset cooling condition, the control assembly controls the dehumidifying equipment to work in a cooling working mode.
More specifically, the control module is preset with preset temperature values, which respectively include an indoor reference value t10, an indoor first preset threshold value t1a and an indoor second preset threshold value t1b, and an outdoor reference value t20, an outdoor third preset threshold value t2a, an outdoor fourth preset threshold value t2b and an outdoor fifth preset value t2c, where t10< t1a < t1b, and t20< t2a < t2b < t2 c.
The preset temperature-rise conditions are as follows: t1 is more than or equal to t1a, t1 is less than or equal to t1b, t2 is more than or equal to t20, t2 is less than or equal to t2a, or t1 is more than or equal to t10, t1 is less than or equal to t1a, t2 is more than or equal to t2a, and t2 is less than or equal to t2 b. That is, if t1 is greater than or equal to t1a, t1 is less than or equal to t1b, t2 is greater than or equal to t20, and t2 is less than or equal to t2a, it is determined that the indoor temperature t1 and the outdoor temperature t2 satisfy the preset temperature-increasing condition; or if t1 is not less than t10, t1 is not less than t1a, t2 is not less than t2a, and t2 is not less than t2b, it is determined that the indoor temperature t1 and the outdoor temperature t2 meet the preset temperature-increasing condition.
The isothermal preset conditions are as follows: t1 is more than t1a, t1 is less than or equal to t1b, t2 is more than t2a, and t2 is less than or equal to t2b, or if t1 is more than or equal to t10, t1 is less than or equal to t1b, t2 is more than t2b, and t2 is less than or equal to t2 c. That is, if t1> t1a, t1 is not more than t1b, meanwhile, t2> t2a, and t2 is not more than t2b, it is determined that the indoor temperature t1 and the outdoor temperature t2 satisfy the isothermal preset condition; or if t1 is not less than t10, t1 is not less than t1b, t2 is greater than t2b, and t2 is not less than t2c, judging that the indoor temperature t1 and the outdoor temperature t2 meet the isothermal preset condition.
The preset cooling condition is as follows: t1> t1b, alternatively, t1 ≧ t10, and t1< t1b, while t2> t2 c. That is, if t1> t1b, it is determined that the indoor temperature t1 and the outdoor temperature t2 satisfy the cool-down preset condition; or if t1 is not less than t10, t1 is less than t1b, and t2 is greater than t2c, judging that the indoor temperature t1 and the outdoor temperature t2 meet the preset cooling condition.
Preferably, when t1> t10, t1< t1a, t2> t20, and t2< t2a, the dehumidification device 100 is controlled to be closed and not to be dehumidified.
When the indoor temperature t1 and the outdoor temperature t2 satisfy the preset warming condition, the dehumidifying apparatus 100 operates in the warming operation mode, and the control unit controls the first expansion valve 51 to be opened without throttling and controls the second expansion valve 52 to be throttled, so that the variable function heat exchanger 30 operates in the condensing mode. After the temperature of the air flow is reduced and dehumidified by the evaporator 40, the air flow is heated by the variable-function heat exchanger, and the air is controlled to finally enter the room at a temperature higher than the indoor temperature, so that the heating and dehumidifying functions are realized.
When the indoor temperature t1 and the outdoor temperature t2 satisfy the isothermal preset condition, the control unit controls the opening degrees of the first expansion valve 51 and the second expansion valve 52 such that both the first expansion valve 51 and the second expansion valve 52 perform partial throttling, and adjusts the operation of the variable function heat exchanger 30 in the condensing mode or the evaporating mode according to the magnitude of the indoor temperature to control the air to enter the room in a condition equal to the indoor ambient temperature. After the air flow is cooled and dehumidified by the evaporator 40, the air flow is heated and dehumidified or cooled and dehumidified by the variable-function heat exchanger, and the air is controlled to finally enter the room at the indoor temperature, so that the isothermal dehumidification function is realized.
If the indoor temperature t1 and the outdoor temperature t2 satisfy the preset cooling condition, the control module controls the first expansion valve 51 to perform throttling, and controls the second expansion valve 52 to be opened without throttling, and the variable function heat exchanger operates in the evaporation mode. After the air flow is cooled and dehumidified by the evaporator 40, the air flow is further cooled and dehumidified by the variable-function heat exchanger, and the air is controlled to finally enter the room under the condition of being lower than the indoor temperature, so that the cooling and dehumidifying functions are realized.
In this embodiment, the dehumidifying apparatus 100 is specifically a dehumidifier and is also called an air humidity adjusting device.
Compared with the existing dehumidification equipment, the problem of uncontrollable outlet air temperature is solved and the thermal comfort of the dehumidification effect is improved only by changing the dehumidification structure, the heat exchanger function and the control method under the condition of not increasing the cost.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All modifications made according to the spirit of the main technical scheme of the invention are covered in the protection scope of the invention.
Claims (14)
1. A method of controlling an air humidity adjustment device, the method comprising the steps of:
s1: detecting indoor temperature t1 and outdoor temperature t 2;
s2: according to the detected indoor temperature t1 and the detected outdoor temperature t2, judging preset conditions met by the indoor temperature t1 and the outdoor temperature t 2;
s3: according to preset conditions met by the indoor temperature t1 and the outdoor temperature t2, the control assembly controls the air humidity adjusting device to selectively work in a heating dehumidification mode, an isothermal dehumidification mode or a cooling dehumidification mode;
the preset conditions comprise a temperature rise preset condition, an isothermal preset condition and a temperature reduction preset condition;
comparing the indoor temperature t1 with an indoor reference value t10, a first preset threshold value t1a and a second preset threshold value t1b, and comparing the outdoor temperature t2 with an outdoor reference value t20, a third preset threshold value t2a, a fourth preset threshold value t2b and a fifth preset threshold value t2c, wherein t10< t1a < t1b, and t20< t2a < t2b < t2 c;
if t1 is not less than t1a, t1 is not less than t1b, t2 is not less than t20, and t2 is not less than t2a, judging that the indoor temperature t1 and the outdoor temperature t2 meet the preset temperature-increasing condition; or if t1 is not less than t10, t1 is not less than t1a, t2 is not less than t2a, and t2 is not less than t2b, judging that the indoor temperature t1 and the outdoor temperature t2 meet the preset temperature-increasing condition,
and judging that a preset temperature rising condition, an isothermal preset condition or a preset temperature reducing condition is met according to the comparison result of the indoor temperature t1 and the outdoor temperature t2, and automatically selecting the air humidity adjusting device to work in a temperature rising dehumidification mode, an isothermal dehumidification mode or a temperature reducing dehumidification mode.
2. The control method according to claim 1, wherein in the step S2, judging whether the indoor temperature t1 and the outdoor temperature t2 satisfy isothermal preset conditions includes the steps of:
if t1 is greater than t1a, t1 is not less than t1b, t2 is greater than t2a, and t2 is not less than t2b, judging that the indoor temperature t1 and the outdoor temperature t2 meet the isothermal preset condition; or if t1 is not less than t10, t1 is not less than t1b, t2 is greater than t2b, and t2 is not less than t2c, judging that the indoor temperature t1 and the outdoor temperature t2 meet the isothermal preset condition.
3. The control method according to claim 1, wherein in the step S2, judging whether the indoor temperature t1 and the outdoor temperature t2 satisfy a cool-down preset condition includes the steps of:
if t1> t1b, judging that the indoor temperature t1 and the outdoor temperature t2 meet the preset cooling condition; or if t1 is not less than t10, t1 is less than t1b, and t2 is greater than t2c, the indoor temperature t1 and the outdoor temperature t2 are judged to meet the preset cooling condition.
4. The control method according to claim 1, wherein the air humidity adjusting device includes a compressor, a condenser, a variable-function heat exchanger, and an evaporator connected in series by a refrigerant circuit, and a first expansion valve provided between the condenser and the variable-function heat exchanger and a second expansion valve provided between the variable-function heat exchanger and the evaporator; the air humidity adjusting device also comprises an air inlet channel, an air exhaust channel, an air inlet fan arranged in the air inlet channel and an air exhaust fan arranged in the air exhaust channel; the evaporator and the variable-function heat exchanger are disposed in the air intake passage, and the variable-function heat exchanger is disposed downstream of the evaporator in an airflow flowing direction.
5. The control method according to claim 4, characterized in that in step S3: according to preset conditions met by the indoor temperature t1 and the outdoor temperature t2, the control assembly controls the opening degrees of the first expansion valve and the second expansion valve, so that the variable-function heat exchanger is adjusted to work in a condensation mode or an evaporation mode, and the air humidity adjusting device selectively works in a heating dehumidification mode, an isothermal dehumidification mode or a cooling dehumidification mode.
6. The control method of claim 5, wherein in step S3, if the indoor temperature t1 and the outdoor temperature t2 satisfy preset heating conditions, the control module controls a first expansion valve to be opened without throttling and controls a second expansion valve to be throttled to operate the variable function heat exchanger in a condensing mode to control air to enter the room at a temperature higher than an indoor ambient temperature.
7. The control method as claimed in claim 5, wherein in step S3, if the indoor temperature t1 and the outdoor temperature t2 satisfy isothermal preset conditions, the control module controls opening degrees of the first expansion valve and the second expansion valve such that both the first expansion valve and the second expansion valve are partially throttled, and adjusts the operation of the variable function heat exchanger in a condensing mode or an evaporating mode according to the magnitude of the indoor temperature t1 to control air to enter the room in conditions equal to the indoor ambient temperature.
8. The control method of claim 5, wherein in step S3, if the indoor temperature t1 and the outdoor temperature t2 satisfy a cool down preset condition, the control module controls the first expansion valve to throttle while controlling the second expansion valve to open without throttling, and the variable function heat exchanger operates in an evaporation mode to control air to enter the room at a condition lower than an indoor ambient temperature.
9. An air humidity adjusting device comprises a compressor, a condenser, a variable function heat exchanger and an evaporator which are connected in series through a refrigerant loop, a first expansion valve arranged between the condenser and the variable function heat exchanger, and a second expansion valve arranged between the variable function heat exchanger and the evaporator; the air humidity adjusting device also comprises an air inlet channel, an air exhaust channel, an air inlet fan arranged in the air inlet channel and an air exhaust fan arranged in the air exhaust channel; the evaporator and the variable-function heat exchanger are arranged in the air intake channel, and the variable-function heat exchanger is arranged downstream of the evaporator in the airflow flowing direction; the air humidity adjusting device further comprises a control assembly, wherein the control assembly is used for controlling the opening degrees of the first expansion valve and the second expansion valve so that the variable-function heat exchanger can selectively work in a condensation mode or an evaporation mode;
the air humidity adjusting device further comprises a temperature detection component, the temperature detection component can detect indoor temperature t1 and outdoor temperature t2, and the control component controls the air humidity adjusting device to work in a temperature-rising dehumidification mode, an isothermal dehumidification mode or a temperature-lowering dehumidification mode according to the indoor temperature t1 and the outdoor temperature t 2; the control assembly is preset with preset conditions, and the preset conditions comprise a heating preset condition, an isothermal preset condition and a cooling preset condition;
comparing the indoor temperature t1 with an indoor reference value t10, a first preset threshold value t1a and a second preset threshold value t1b, and comparing the outdoor temperature t2 with an outdoor reference value t20, a third preset threshold value t2a, a fourth preset threshold value t2b and a fifth preset threshold value t2c, wherein t10< t1a < t1b, t20< t2a < t2b < t2c, and the preset temperature-increasing condition is as follows: t1 is more than or equal to t1a, t1 is less than or equal to t1b, t2 is more than or equal to t20, and t2 is less than or equal to t2 a; or t1 is more than or equal to t10, t1 is less than or equal to t1a, t2 is more than or equal to t2a, and t2 is less than or equal to t2 b; and judging that a preset temperature rising condition, an isothermal preset condition or a preset temperature reducing condition is met according to the comparison result of the indoor temperature t1 and the outdoor temperature t2, and automatically selecting the air humidity adjusting device to work in a temperature rising dehumidification mode, an isothermal dehumidification mode or a temperature reducing dehumidification mode.
10. The air humidity adjusting apparatus of claim 9, wherein if the indoor temperature t1 and the outdoor temperature t2 satisfy the preset warming condition, the control unit controls the first expansion valve to be opened without throttling and controls the second expansion valve to be throttled, so that the variable function heat exchanger operates in the condensing mode to control air to enter the room at a temperature higher than the indoor ambient temperature.
11. The air humidity adjusting apparatus of claim 10, wherein if the indoor temperature t1 and the outdoor temperature t2 satisfy the isothermal preset condition, the control module controls opening degrees of the first expansion valve and the second expansion valve such that both the first expansion valve and the second expansion valve perform partial throttling, and adjusts the operation of the variable function heat exchanger in the condensing mode or the evaporating mode according to the magnitude of the indoor temperature to control air to enter the room in a condition equal to the indoor ambient temperature.
12. The air humidity adjusting apparatus of claim 10, wherein if the indoor temperature t1 and the outdoor temperature t2 satisfy the preset cool-down condition, the control module controls the first expansion valve to perform throttling while controlling the second expansion valve to be opened without throttling, and the variable-function heat exchanger operates in an evaporation mode.
13. Air humidity regulating device according to claim 10, characterized in that said isothermal preset conditions are: t1 is more than t1a, t1 is less than or equal to t1b, meanwhile, t2 is more than t2a, and t2 is less than or equal to t2 b; or if t1 is more than or equal to t10, t1 is less than or equal to t1b, and t2 is more than t2b, and t2 is less than or equal to t2 c.
14. An air humidity regulating device according to claim 10, wherein the preset condition of temperature reduction is: t1> t1 b; alternatively, t1 ≧ t10, and t1< t1b, while t2> t2 c.
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| CN111706972B (en) * | 2020-06-04 | 2023-02-17 | 青岛海尔空调器有限总公司 | Control method and control device for dehumidification of air conditioner and air conditioner |
| CN111706971B (en) * | 2020-06-04 | 2023-01-13 | 青岛海尔空调器有限总公司 | Control method and control device for dehumidification of air conditioner and air conditioner |
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Inventor after: Chen Xiang Inventor after: Zhang Feng Inventor after: Wu Ming Inventor before: Chen Xiang Inventor before: Zhang Feng Inventor before: Liu Bingru |