An integrated air conditioner and its control method

Abstract

This invention discloses an integrated air conditioner and its control method. The air conditioner includes: a housing, the interior of which is divided into an upper chamber and a lower chamber; the upper chamber is provided with an air inlet and an air inlet baffle corresponding to the evaporator, a first air outlet and a corresponding first air guide plate; the lower chamber is provided with a second air outlet and a corresponding second air guide plate; the upper chamber is provided with a cooling air duct connecting the air inlet and a first air outlet duct connecting the cooling air duct and the first air outlet, and the evaporator is disposed on the cooling air duct; the lower chamber forms a second air outlet duct connecting the cooling air duct and the second air outlet; the compressor and the main condenser are located on the second air outlet duct; an air guide assembly is disposed between the upper chamber and the lower chamber; when the air guide assembly is in a first working state, the first air outlet duct is closed, and the cooling air duct is connected to the second air outlet duct; when the air conditioner is operating in a constant temperature and dehumidification mode, the air guide assembly is controlled to be in the first working state.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to an integrated air conditioner and its control method. Background Technology

[0002] Current household air conditioners are generally split-type, requiring the indoor and outdoor units to be connected by pipes. This design is not compact enough, and for example, there are usually no pre-installed mounting locations on exterior walls, such as in kitchens, making installation inconvenient. Even integrated air conditioners require drilling holes in walls or windows to install flexible cooling hoses, which can damage the décor and affect aesthetics. Furthermore, traditional air conditioners, when in dehumidification mode, simultaneously lower the indoor temperature, impacting the user experience. Summary of the Invention

[0003] In view of this, the present invention discloses an integrated air conditioner and its control method to solve the problem that the indoor temperature drops simultaneously when the dehumidification mode of a traditional air conditioner is turned on.

[0004] To achieve the above objectives, the technical solution adopted by this invention is as follows:

[0005] The first aspect of this invention discloses an integrated air conditioner, comprising:

[0006] The shell is internally divided into an upper chamber and a lower chamber.

[0007] The evaporator is located in the upper chamber;

[0008] The main condenser is located in the lower chamber;

[0009] The compressor is located in the lower chamber and is situated on one side of the main condenser.

[0010] The upper chamber is provided with an air inlet and an air inlet baffle corresponding to the evaporator, a first air outlet and a first air guide plate corresponding to the first air outlet;

[0011] The lower chamber is equipped with a second air outlet and a corresponding second air guide plate for the second air outlet;

[0012] The upper chamber is provided with a cooling air duct that connects to the air inlet and a first air outlet duct that connects the cooling air duct and the first air outlet. The evaporator is installed on the cooling air duct.

[0013] The lower chamber forms a second air outlet duct that connects the cooling air duct and the second air outlet; the compressor and the main condenser are located on the second air outlet duct, and the compressor is located upstream of the main condenser;

[0014] An air guide assembly is provided between the upper chamber and the lower chamber. The air guide assembly is used to control the switching between the first air outlet duct and the second air outlet duct. When the air guide assembly is in the first working state, the first air outlet duct is closed and the cooling duct is connected to the second air outlet duct. When the air guide assembly is in the second working state, the second air outlet duct is closed and the cooling duct is connected to the first air outlet duct.

[0015] The air conditioner has a constant temperature and dehumidification mode.

[0016] When the air conditioner is running in cooling mode, the air guide component is in the second working state; when the air conditioner is running in constant temperature and dehumidification mode, the air guide component is in the first working state.

[0017] Alternatively, the air guide assembly can be located at the air outlet of the cooling air duct.

[0018] The air guide assembly includes a first movable volute, a second movable volute, a transmission rod, a moving air guide plate, and a drive motor;

[0019] The first movable volute tongue and the second movable volute tongue are arranged opposite each other on both sides of the air outlet of the cooling air duct and can be retracted or extended on their respective sides.

[0020] The movable air guide plate is movably positioned between the first movable volute tongue and the second movable volute tongue.

[0021] One end of the transmission rod is connected to the motor drive, and the other end is connected to the moving air guide plate. When the air guide assembly is in the first working state, the moving air guide plate cooperates with the first movable volute to shut off the first air outlet duct, so that the cooling air duct is connected to the second air outlet duct. When the air guide assembly is in the second working state, the moving air guide plate cooperates with the second movable volute to shut off the second air outlet duct, so that the cooling air duct is connected to the first air outlet duct.

[0022] Optionally, a first partition is provided between the upper chamber and the lower chamber. When the air guide assembly is in the first working state, the first end of the moving air guide plate abuts against the first partition, and the second end cooperates with the first movable volute tongue. When the air guide assembly is in the second working state, the second end of the moving air guide plate abuts against the first partition, and the first end cooperates with the second movable volute tongue.

[0023] Alternatively, the main condenser can be a coaxial type, with water flowing through the inner tube, refrigerant flowing through the outer tube, and air flowing outside the tube into the second air outlet duct.

[0024] Alternatively, the air conditioner has a main refrigerant flow path and a bypass refrigerant flow path. The air conditioner also has a secondary condenser. The main condenser is located on the main refrigerant flow path, and the secondary condenser is located on the bypass refrigerant flow path and in the flow path of the second air outlet duct in the lower chamber. The secondary condenser is air-cooled and can be selectively connected in series with the main condenser in the air conditioner's refrigeration system flow path through the bypass refrigerant flow path. The gaseous refrigerant discharged from the compressor first flows through the secondary condenser and then through the main condenser.

[0025] In cooling mode and during the initial operation of the air conditioner, shut off the bypass refrigerant flow path;

[0026] In cooling mode, when the temperature of the water in the main condenser is higher than the system's preset upper limit for water temperature, the bypass refrigerant flow path is opened.

[0027] Alternatively, the lower chamber may be provided with a compressor chamber and a main condenser chamber, with the compressor located in the compressor chamber, the main condenser located in the main condenser chamber, and the auxiliary condenser located in the compressor chamber;

[0028] A second partition is provided between the main condenser chamber and the compressor chamber, and the second partition has a through hole for fluid communication between the main condenser chamber and the compressor chamber.

[0029] Alternatively, a first partition may be provided between the upper chamber and the lower chamber;

[0030] The integrated air conditioner has an evaporator base below the evaporator to collect the condensate produced by the evaporator;

[0031] The integrated air conditioner has a water collection tank below the main condenser, which is used to collect the condensate produced by the evaporator;

[0032] The water collection tank has an open structure.

[0033] The second aspect of this invention discloses a control method for controlling any of the integrated air conditioners described in the first aspect, wherein the control method further includes, in cooling mode and constant temperature dehumidification mode:

[0034] Determine the indoor ambient temperature and the air conditioner's outlet temperature, and calculate the temperature difference ΔT between the indoor ambient temperature and the air conditioner's outlet temperature.

[0035] Compare the temperature difference ΔT with the first and second set values ​​for the corresponding mode;

[0036] The compressor operating frequency is adjusted based on the comparison results.

[0037] Further, optionally, the compressor operating frequency can be adjusted based on the comparison results, including:

[0038] When the temperature difference ΔT is greater than the first set value, the compressor will operate at a reduced frequency.

[0039] When the temperature difference ΔT is less than the second set value, the compressor is operated at a higher frequency.

[0040] When the temperature difference ΔT is less than or equal to the first set value and greater than or equal to the second set value, the compressor is kept running at the current frequency.

[0041] Further optional control methods include:

[0042] Determine the inlet and outlet water temperatures of the main condenser, and calculate the temperature difference ΔT between the inlet and outlet water temperatures. 水 ;

[0043] The temperature difference ΔT 水 Compare with the third and fourth settings;

[0044] The water flow rate in the outer tube of the main condenser is adjusted based on the comparison results.

[0045] Further, optionally, the water flow rate in the main condenser outer casing can be adjusted based on the comparison results, including:

[0046] At temperature difference ΔT 水 If the water flow rate exceeds the third set value, increase the water flow rate.

[0047] At temperature difference ΔT 水 When the water flow rate is less than the fourth set value, reduce the water flow rate.

[0048] At temperature difference ΔT 水 When the current water flow rate is less than or equal to the third set value and greater than or equal to the fourth set value, the current water flow rate is maintained.

[0049] Alternatively, the control method may further include the following during the regulation of the water flow rate in the main condenser:

[0050] Compare the outlet water temperature with the preset target outlet water temperature;

[0051] When the outlet water temperature is higher than the preset target outlet water temperature, the refrigerant discharged by the compressor is first heat-exchanged through the auxiliary condenser before entering the main condenser.

[0052] When the outlet water temperature is less than or equal to the preset target outlet water temperature, the refrigerant discharged by the compressor is allowed to directly enter the main condenser.

[0053] Beneficial effects: The air conditioner of the present invention is an integrated unit, which is easy to install, requires no connecting pipes, has a compact structure, and greatly reduces the area occupied; at the same time, the air conditioner is equipped with dual air ducts, and constant temperature and dehumidification functions can be achieved by controlling the air guide components, thereby improving the user experience. Attached Figure Description

[0054] The above and other objects, features, and advantages of the present invention will become more apparent from the detailed description of exemplary embodiments with reference to the accompanying drawings. The drawings described below are merely some embodiments disclosed in the present invention; those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0055] Figure 1a A schematic diagram of an air conditioning cooling mode structure according to an embodiment of the present invention is shown.

[0056] Figure 1b A schematic diagram of air outlet in air conditioning cooling mode according to an embodiment of the present invention is shown.

[0057] Figure 2a A schematic diagram of an air conditioning constant temperature dehumidification mode according to an embodiment of the present invention is shown.

[0058] Figure 2b A schematic diagram of air outlet in constant temperature and dehumidification mode of an air conditioner according to an embodiment of the present invention is shown.

[0059] Figure 3 A schematic diagram of the appearance of an air conditioner according to an embodiment of the present invention is shown.

[0060] Figure 4 A schematic diagram of a transmission rod structure according to an embodiment of the present invention is shown.

[0061] Figure 5 A flowchart illustrating an air conditioner control method according to an embodiment of the present invention is shown.

[0062] Figure 6 A flowchart illustrating an air conditioner control method according to an embodiment of the present invention is shown.

[0063] Among them, A1-shell, A2-evaporator, A3-touchscreen control panel, A4-cross-flow fan blade, A5-first movable volute, A6-first air guide plate, A7-capillary tube, A8-second air guide plate, A9-main condenser, A10-water collection tank, A11-water level detection device, A12-second partition, A13-compressor, A14-first solenoid valve, A15-auxiliary condenser, A16-second solenoid valve, A17-third solenoid valve, A18-first partition, A19-moving air guide plate, A20-drive rod, A21-second movable volute, A22-evaporator base, A23-air inlet baffle, A24-water inlet, A25-water outlet. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0065] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” used in the embodiments of this invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “Multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0066] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0067] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0068] To address the issue of indoor temperature drop that occurs simultaneously when traditional air conditioners activate dehumidification mode, this embodiment discloses a modular air conditioner that combines... Figure 1aThe air conditioner includes: a housing A1, the interior of which is divided into an upper chamber and a lower chamber; an evaporator A2, located in the upper chamber; a main condenser A9, located in the lower chamber; and a compressor A13, located in the lower chamber and situated to one side of the main condenser A9. The upper chamber has an air inlet and an air inlet baffle A23 corresponding to the evaporator A2, a first air outlet and a first air guide plate A6 corresponding to the first air outlet. The lower chamber has a second air outlet and a second air guide plate A8 corresponding to the second air outlet. The upper chamber has a cooling duct connecting the air inlet and a first air outlet duct connecting the cooling duct and the first air outlet. 2. It is installed on the cooling air duct; the lower chamber forms a second air outlet duct that connects the cooling air duct and the second air outlet; the compressor A13 and the main condenser A9 are located on the second air outlet duct, and the compressor A13 is located upstream of the main condenser A9; an air guide assembly is provided between the upper chamber and the lower chamber, and the air guide assembly is used to control the switching of the first air outlet duct and the second air outlet duct; when the air guide assembly is in the first working state, the first air outlet duct is closed, and the cooling air duct is connected to the second air outlet duct; when the air guide assembly is in the second working state, the second air outlet duct is closed, and the cooling air duct is connected to the first air outlet duct;

[0069] The air conditioner has a cooling mode and a constant temperature and dehumidification mode. When the air conditioner is running in cooling mode, the air guide component is in the second working state. When the air conditioner is running in constant temperature and dehumidification mode, the air guide component is in the first working state.

[0070] The air conditioner in this embodiment is an integrated unit, easy to install, requiring no connecting pipes, and has a compact structure, greatly reducing its footprint. Simultaneously, the air conditioner features dual air ducts; by controlling the air guide components, it can achieve constant temperature dehumidification and cooling functions, enhancing the user experience. Specifically, when the user sets the constant temperature dehumidification mode, refer to... Figure 2b Indoor air is drawn in through the air inlet A23 of the air conditioner, cooled and dehumidified by the evaporator A2, and then ejected by the cross-flow fan A4 into the second air outlet duct. The cooled air then enters the compressor and condenser chambers through the left-side channel, simultaneously cooling the compressor A13 and main condenser A9 while heating the air. The heated, dry air is then delivered to the room through the lower air guide plate (second air guide plate A8), achieving constant temperature and dehumidification. When the user sets the cooling mode and turns on the unit, refer to... Figure 1b When compressor A13 starts, the low-temperature, low-pressure refrigerant vapor enters compressor A13 and is compressed to a high-temperature, high-pressure state. It then enters the main condenser A9 to release heat. The condensed refrigerant liquid passes through the throttling device A7, where its pressure is reduced to a low-temperature, low-pressure two-phase state. It then enters the evaporator A2 to evaporate and absorb heat, cooling the air. Indoor air is drawn in through the air inlet A23 of the air conditioner, cooled by the evaporator A2, and then ejected by the cross-flow fan A4 into the first air outlet duct, allowing the cool air to enter the room and achieving ambient cooling.

[0071] Optionally, the air guide assembly is located at the air outlet of the cooling air duct.

[0072] The air guide assembly includes a first movable volute A5, a second movable volute A21, a transmission rod A20, a moving air guide plate A19, and a drive motor;

[0073] The first movable volute A5 and the second movable volute A21 are arranged opposite each other on both sides of the air outlet of the cooling air duct and can be retracted or extended on their respective sides.

[0074] The motion guide plate A19 is movably positioned between the first movable volute tongue A5 and the second movable volute tongue A21.

[0075] One end of the transmission rod A20 is connected to the motor drive, and the other end is connected to the moving air guide plate A19. When the air guide assembly is in the first working state, the moving air guide plate A19 cooperates with the first movable volute A5 to shut off the first air outlet duct, so that the cooling air duct is connected to the second air outlet duct. When the air guide assembly is in the second working state, the moving air guide plate A19 cooperates with the second movable volute A21 to shut off the second air outlet duct, so that the cooling air duct is connected to the first air outlet duct.

[0076] Specifically, refer to Figure 4 The transmission rod has a built-in motor that drives an internal gear to rotate. The gear meshes with a rack on the transmission rod, thus driving the transmission rod to move. The worm gear mechanism operates on the same principle. The moving air guide plate rotates around its axis. A motor is located at the end of the transmission rod to drive the moving air guide plate, allowing it to rotate around the motor's axis.

[0077] Optionally, a first partition A18 is provided between the upper chamber and the lower chamber. When the air guide assembly is in the first working state, the first end of the moving air guide plate A19 abuts against the first partition A18, and the second end cooperates with the first movable volute tongue. When the air guide assembly is in the second working state, the second end of the moving air guide plate A19 abuts against the first partition A18, and the first end cooperates with the second movable volute tongue.

[0078] Optionally, the main condenser A9 is a coaxial type, with water flowing through the inner tube, refrigerant flowing through the outer tube, and air flowing outside the tubes from the second air outlet duct. This allows the refrigerant to exchange heat with both water and air simultaneously.

[0079] Optionally, the air conditioner is equipped with a main refrigerant flow path and a bypass refrigerant flow path. The air conditioner also has an auxiliary condenser A15. The main condenser A9 is located on the main refrigerant flow path, and the auxiliary condenser A15 is located on the bypass refrigerant flow path and in the flow path of the second air outlet duct in the lower chamber. The auxiliary condenser A15 is air-cooled and can be selectively connected in series with the main condenser A9 in the refrigeration system flow path of the air conditioner through the bypass refrigerant flow path. The gaseous refrigerant discharged by the compressor A13 first flows through the auxiliary condenser A15 and then flows through the main condenser A9.

[0080] In cooling mode and during the initial operation of the air conditioner, shut off the bypass refrigerant flow path;

[0081] In cooling mode, when the water temperature in the main condenser A9 is higher than the system's preset upper limit for water temperature, the bypass refrigerant flow path is opened.

[0082] Optionally, the lower chamber is provided with a compressor A13 chamber and a main condenser A9 chamber, with the compressor A13 located in the compressor A13 chamber, the main condenser A9 located in the main condenser A9 chamber, and the auxiliary condenser A15 located in the compressor A13 chamber;

[0083] A second partition A12 is provided between the main condenser A9 chamber and the compressor A13 chamber. The second partition A12 has a through hole that allows fluid communication between the main condenser A9 chamber and the compressor A13 chamber.

[0084] Optionally, a first partition A18 is provided between the upper chamber and the lower chamber;

[0085] The integrated air conditioner has an evaporator A2 base below the evaporator A2, which can collect the condensate produced by the evaporator A2;

[0086] The integrated air conditioner has a water collection tank A10 below the main condenser A9. The water collection tank A10 is used to collect the condensate produced by the evaporator A2.

[0087] The water collection tank A10 has an open structure.

[0088] Specifically, in combination Figure 2a When the user sets the constant temperature dehumidification mode, the second air guide plate A8 and the air inlet baffle A23 open, and the first air guide plate A6 closes; thus, the air guide assembly is in its first working state, thereby closing the first air outlet duct and opening the second air outlet duct. Specifically, as follows... Figure 2a As shown, the first movable volute A5 is retracted by a motor (located inside the evaporator base A22), and the second movable volute A21 is extended by a motor. Figure 2a The position shown. The transmission rod A20 drives the moving air guide plate A19 to the indicated position. Figure 2aAt the indicated location, the movable air guide plate A19, the second movable volute A21, and the partition 2A18 form the second air outlet duct. Indoor air is drawn in through the air conditioner inlet, cooled and dehumidified by the evaporator A2, and then ejected by the cross-flow fan A4 into the second air outlet duct. The cooled air enters the compressor chamber and the main condenser chamber through the second channel, simultaneously cooling the compressor and the main condenser while heating the air. Preferably, a second partition A12 is installed between the compressor chamber and the main condenser chamber, with holes in the partition to facilitate airflow. The heated, dry air is then delivered to the room through the lower air guide plate, achieving constant temperature and dehumidification.

[0089] Specifically, in combination Figure 1a When the user turns on the unit in cooling mode, the first air guide plate A6 and the air inlet baffle A23 open, and the second air guide plate A8 closes; thus, the air guide assembly is put into a second working state, thereby opening the first air outlet duct and closing the second air outlet duct. Specifically, as follows... Figure 1a As shown, the first movable volute A5 is positioned as follows: Figure 1a As shown in the default position, the second movable volute A21 is in the retracted state. The transmission rod A20 drives the moving air guide plate A19 to... Figure 1a At the indicated location, the movable air guide plate A19, the first movable volute A5, and the partition 2A18 form the first air outlet channel. The compressor A13 starts. Low-temperature, low-pressure refrigerant vapor enters the compressor and is compressed to a high-temperature, high-pressure state. It then enters the main condenser A9 to release heat. The condensed refrigerant liquid is throttled and depressurized by the throttling device A7 to a low-temperature, low-pressure two-phase state, and then enters the evaporator A2 to evaporate and absorb heat, cooling the air. Indoor air is drawn in through the air inlet A23 of the air conditioner, cooled by the evaporator A2, and then ejected by the cross-flow fan A4 into the first air outlet duct, allowing cold air to enter the room and achieving ambient cooling. Finally, the refrigerant vapor is drawn back into the compressor A13, completing one refrigeration cycle of the system.

[0090] The second aspect of this embodiment also provides a control method for controlling the integrated air conditioner provided in any of the preceding embodiments. In cooling mode and dehumidification mode, the control method further includes S1 to S3, wherein:

[0091] S1, determine the indoor ambient temperature and the air conditioner's outlet temperature, and calculate the temperature difference ΔT between the indoor ambient temperature and the air conditioner's outlet temperature.

[0092] Optionally, an indoor temperature sensor is used to detect the indoor ambient temperature, and an air outlet temperature sensor is used to detect the air outlet temperature. Preferably, temperature sensors are installed at the first and second air outlets respectively. All of the temperature sensors are connected to a control device, which calculates the temperature difference ΔT between the indoor ambient temperature and the air outlet temperature.

[0093] S2, compare the temperature difference ΔT with the first and second set values ​​for the corresponding mode;

[0094] S3 adjusts the compressor operating frequency based on the comparison results.

[0095] The first and second setpoints mentioned above are two boundary values ​​of the optimal range of temperature difference between the indoor ambient temperature and the air conditioner's outlet temperature in the corresponding mode. In the cooling mode, the first and second setpoints are preferably determined based on empirical values ​​of the optimal inlet and outlet air temperature difference ΔT1, which is preferably 6℃ to 8℃. In the constant temperature dehumidification mode, the temperature difference ΔT needs to be small enough, that is, the outlet air temperature is close to the indoor ambient temperature, so that the perceived temperature will not decrease. ΔT is preferably -1℃ to 1℃. By comparing the temperature difference ΔT with the first and second setpoints in the corresponding mode, the compressor operating frequency is adjusted according to the comparison results to meet the outlet air temperature requirements in the corresponding mode and to keep the compressor operating frequency at its optimal level.

[0096] Optionally, S3 adjusts the compressor operating frequency based on the comparison results, including S31 to S33, wherein:

[0097] S31, when the temperature difference ΔT is greater than the first set value, the compressor is made to operate at a reduced frequency;

[0098] S32, when the temperature difference ΔT is less than the second set value, the compressor is made to operate at a higher frequency;

[0099] S33: When the temperature difference ΔT is less than or equal to the first set value and greater than or equal to the second set value, the compressor is kept running at the current frequency.

[0100] Specifically, in combination Figure 6 In cooling mode, after the air conditioner has been running for t0 minutes at its initial settings, the system begins to detect and calculate the indoor ambient temperature T. 环温 With the outlet air temperature T 出风 The system calculates the temperature difference ΔT and determines whether frequency adjustment is needed based on the difference between ΔT and the preset optimal inlet and outlet air temperature difference ΔT1. If ΔT < ΔT1-1, the system operates at an increased frequency; if ΔT > ΔT1+1, the system operates at a decreased frequency. When ΔT satisfies ΔT1-1 ≤ ΔT ≤ ΔT1+1, i.e., fluctuates within ±1℃ of the optimal temperature difference, the system maintains its current frequency, at which point the compressor operates at its optimal frequency.

[0101] Combination Figure 6 In constant temperature and dehumidification mode, after the air conditioner has been running at its initial set parameters for t2 minutes, the system begins to detect and calculate the indoor ambient temperature T. 环温 With the outlet air temperature T 出风The system calculates the temperature difference ΔT and uses this ΔT to determine whether frequency adjustment is needed. If ΔT > 1, the system operates at an increased frequency; if ΔT < 1, the system operates at a decreased frequency. When ΔT satisfies -1 ≤ ΔT ≤ 1, meaning the temperature difference fluctuates within ±1℃, the system maintains its current frequency, at which point the compressor's operating frequency is optimal.

[0102] Further optional, combined Figure 1a , Figure 2a The main condenser A9 at the bottom of the air conditioner is a shell-and-tube type. Refrigerant vapor enters the outer tube space from the top of the main condenser A9, and the condensed liquid refrigerant flows out from the bottom. Tap water enters the inner tube from the inlet A24 (connected to the bottom of the main condenser), absorbs heat, and flows out from the outlet A25 (connected to the top of the main condenser). It flows in a counter-current heat transfer with the refrigerant vapor, effectively utilizing the heat released by the main condenser to achieve the purpose of heat dissipation and hot water preparation.

[0103] After the compressor maintains its current frequency operation in S33, this control method also includes S4 to S6, wherein:

[0104] S4. Determine the inlet and outlet water temperatures of the main condenser, and calculate the temperature difference ΔT between the inlet and outlet water temperatures. 水 ;

[0105] S5, the temperature difference ΔT 水 Compare with the third and fourth settings;

[0106] S6, adjust the water flow rate of the main condenser based on the comparison results.

[0107] Specifically, in constant temperature dehumidification mode and cooling mode, under the determined optimal operating frequency of the compressor, after running for t1 minutes, the system begins to detect and calculate the outlet water temperature T. 出水 With inlet water temperature T 进水 Temperature difference △T 水 And according to △T 水 The water flow rate M of the main condenser is adjusted according to the relationship between the third and fourth set values ​​to ensure stable system operation and constant temperature water output.

[0108] In this embodiment, it is preferable to use a preset optimal inlet and outlet water temperature difference value △T 水目标 To determine the third and fourth settings.

[0109] Optionally, S6 adjusts the water flow rate of the main condenser based on the comparison results, including S61 to S63, wherein:

[0110] S61, at a temperature difference ΔT 水 If the water flow rate exceeds the third set value, increase the water flow rate.

[0111] S62, at a temperature difference ΔT 水 When the water flow rate is less than the fourth set value, reduce the water flow rate.

[0112] S63, at a temperature difference ΔT 水 When the current water flow rate is less than or equal to the third set value and greater than or equal to the fourth set value, the current water flow rate is maintained.

[0113] Specifically, in cooling mode, after running for t1 minutes at the determined optimal operating frequency of the compressor, the system begins to detect and calculate the outlet water temperature T. 出水 With inlet water temperature T 进水 Temperature difference △T 水 And according to △T 水 The optimal inlet and outlet water temperature difference △T 水目标 The difference between ΔT and ΔT is used to determine whether the water flow rate M needs to be adjusted. 水 <△T 水目标 When -1, the system reduces the water flow by closing the water valve opening; when ΔT 水 >△T 水目标 At this time, the system increases the water flow by widening the water valve opening. When ΔT 水目标 -1≤△T 水 ≤△T 水目标 At that time, the system operates stably at the current water flow rate.

[0114] In constant temperature dehumidification mode, combined with Figure 6 After running for t3 minutes at the determined optimal operating frequency, the system begins to detect and calculate the outlet water temperature T. 出水 With inlet water temperature T 进水 Temperature difference △T 水 And according to △T 水 The optimal inlet and outlet water temperature difference △T 水目标 The difference between ΔT and ΔT is used to determine whether the water flow rate M needs to be adjusted. 水 <△T 水目标 When -1, the system reduces the water flow by closing the water valve opening; when ΔT 水 >△T 水目标 At this time, the system increases the water flow by widening the water valve opening. When ΔT 水目标 -1≤△T 水 ≤△T 水目标 At that time, the system operates stably at the current water flow rate.

[0115] Optionally, during the regulation of the water flow rate of the main condenser A9, the control method further includes S71 to S73, wherein:

[0116] S71 compares the outlet water temperature with the preset target outlet water temperature;

[0117] S72, when the outlet water temperature is higher than the preset target outlet water temperature, the refrigerant discharged by the compressor is first heat-exchanged through the auxiliary condenser before entering the main condenser.

[0118] S73 allows the refrigerant discharged from the compressor to directly enter the main condenser when the outlet water temperature is less than or equal to the preset target outlet water temperature.

[0119] The aforementioned auxiliary condenser is preferably a plate-type auxiliary condenser A15. Specifically, the plate-type auxiliary condenser (A15) is arranged in the rear panel of the air conditioner housing. During the initial operation of the air conditioner, the first solenoid valve A14 and the third solenoid valve A17 are closed, and the second solenoid valve A16 is open, so the refrigerant does not enter the plate-type auxiliary condenser A15. When the tap water temperature in the main condenser A9 exceeds the system's preset upper limit for water temperature (temperature sensors for detecting water temperature are installed at both the inlet and outlet), the first solenoid valve A14 and the third solenoid valve A17 open, and the second solenoid valve A16 closes. The high-temperature and high-pressure refrigerant vapor discharged from the compressor A13 first enters the plate-type auxiliary condenser A15 arranged in the rear panel of the air conditioner through the first solenoid valve A14 to exchange heat with the indoor air, and then enters the main condenser through the third solenoid valve A17, reducing the load on the main condenser and achieving the purpose of heat dissipation.

[0120] Specifically, in combination Figure 6 During the water flow regulation process, the system monitors the outlet water temperature T in real time. 出水 And according to T 出水 Compared with the preset target outlet water temperature value △T 目标出水 The difference between T and T is used to determine whether the refrigerant flow path needs adjustment. 出水 <T 目标出水 When T is reached, the system controls the second solenoid valve to open, the two-way valves 1 and 3 to close, and the flow path of the plate auxiliary condenser to close; when T... 排气 >T 目标排气 At this time, the system controls the second solenoid valve to close, and the two-way valves 1 and 3 to open, opening the flow path of the plate-type auxiliary condenser, so as to reduce the load on the main condenser and control the outlet water temperature.

[0121] Specifically, in combination Figure 6 During the water flow regulation process, the system monitors the outlet water temperature T in real time. 出水 And according to T 出水 Compared with the preset target outlet water temperature value △T 目标出水 The difference between T and T is used to determine whether the refrigerant flow path needs adjustment. 出水 <T 目标出水 When T is reached, the system controls the second solenoid valve to open, the two-way valves 1 and 3 to close, and the flow path of the plate auxiliary condenser to close; when T... 排气 >T 目标排气At this time, the system controls the second solenoid valve to close, and the two-way valves 1 and 3 to open, opening the flow path of the plate-type auxiliary condenser, so as to reduce the load on the main condenser and control the outlet water temperature.

[0122] like Figure 1a , Figure 2a As shown, the front panel of the air conditioner has two air guide plates, an upper one (A6) and a lower one (A8). An air inlet baffle (A23) is located on the upper side, and a removable filter is installed at the air inlet to prevent dust, oil, and other contaminants from entering the air conditioner during operation. The upper and lower air guide plates and the air inlet baffle (A23) remain closed when the air conditioner is not in use to prevent dirt from entering the interior. The working principle of the air conditioner is as follows:

[0123] 1. When the user sets the cooling mode and turns on the unit: the upper air guide plate A6 and the air inlet baffle A23 open, and the lower air guide plate A8 closes. The first movable volute A5 is in the position as follows: Figure 1a As shown in the default position, the second movable volute A21 is in the retracted state. The transmission rod A20 drives the moving air guide plate A19 to... Figure 1a At the indicated location, the movable air guide plate A19, the first movable volute tongue-A5, and the partition plate 2-A18 form the right-side air outlet channel. When compressor A13 starts, the low-temperature, low-pressure refrigerant vapor enters the compressor and is compressed to a high-temperature, high-pressure state. It then enters the main condenser A9 to release heat. The condensed refrigerant liquid is throttled and depressurized by the throttling device A7 to a low-temperature, low-pressure two-phase state, and then enters the evaporator A2 to evaporate and absorb heat, cooling the air. Indoor air is drawn in through the air inlet A23 of the air conditioner, cooled by the evaporator A2, and then ejected by the cross-flow fan A4 into the right-side air duct, allowing cool air to enter the room and achieving ambient cooling. Finally, the refrigerant vapor is drawn back into the compressor, completing one refrigeration cycle of the system.

[0124] The main condenser A9 at the bottom of the air conditioner is a shell-and-tube type. Refrigerant vapor enters the outer tube space from the top of the main condenser A9, and the condensed liquid refrigerant flows out from the bottom. Tap water enters the inner tube from the inlet A24 (connected to the bottom of the main condenser A9), absorbs heat, and flows out from the outlet A25 (connected to the top of the main condenser A9). It flows in a counter-current heat transfer with the refrigerant vapor, effectively utilizing the heat released by the main condenser to achieve the purpose of heat dissipation and hot water preparation.

[0125] The auxiliary condenser A15 is a plate heat exchanger, located in the rear panel of the air conditioner. During initial operation, the first solenoid valve A14 and the third solenoid valve A17 are closed, while the second solenoid valve A16 is open, preventing refrigerant from entering the auxiliary condenser. When the tap water temperature in the main condenser A9 exceeds the system's preset upper limit (temperature sensors are installed at both the inlet and outlet to detect water temperature), the first solenoid valve A14 and the third solenoid valve A17 open, and the second solenoid valve A16 closes. The high-temperature, high-pressure refrigerant vapor discharged from the compressor A13 first passes through the first solenoid valve A14 into the plate auxiliary condenser located in the rear panel of the air conditioner to exchange heat with the indoor air, and then passes through the third solenoid valve A17 into the main condenser, reducing the load on the main condenser and achieving heat dissipation.

[0126] 2. When the user sets the constant temperature dehumidification mode, the lower air guide plate A8 and the air inlet baffle A23 open, and the upper air guide plate A6 closes. For example... Figure 2a As shown, the first movable volute A5 is retracted by a motor (located inside the evaporator base A22), and the second movable volute A21 is extended by a motor. Figure 2a The position shown. The transmission rod A20 drives the moving air guide plate A19 to the indicated position. Figure 2a At the indicated location, the movable air guide plate A19, the second movable volute A21, and the first partition A18 form the left air outlet channel. Indoor air is drawn in through the air inlet baffle A23 at the air conditioner's upper air inlet, cooled and dehumidified by the evaporator A2, and then ejected by the cross-flow fan A4 into the left air duct. The cooled air enters the compressor chamber and main condenser chamber through the left channel, simultaneously cooling the compressor A13 and the main condenser A9 while heating the air. A second partition A12 is installed between the compressor chamber and the main condenser chamber, with holes to facilitate airflow. The heated, dry air is then delivered to the room through the lower air guide plate, achieving constant temperature dehumidification.

[0127] When the air conditioner is operating in cooling or dehumidifying mode, because the evaporator temperature is lower than the air dew point temperature, water vapor in the air condenses into water droplets on the evaporator surface. The resulting condensate slides down the evaporator and into the evaporator base. The condensate then flows into the push-pull water collection tank A10 through a drainage channel inside the evaporator base. When the water level detection device A11 detects that the water tank is full, it issues an alarm to remind the user to empty it.

[0128] In another embodiment, the cooling mode control logic is as follows: Figure 6 As shown, the specific control method is as follows:

[0129] Turn on the air conditioner and check the ambient temperature.

[0130] Specifically, when the air conditioner receives the start-up signal, the air inlet damper and the upper air guide plate open, and the transmission rod and the moving air guide plate rotate to angles α1 and β1, respectively; the indoor ambient temperature is detected, and the system automatically sets the initial frequency F0 and the initial water flow rate M0 according to the ambient temperature.

[0131] Steps S101, S102, S103, S104: Run for t0 minutes with the initial set parameters, then start detecting the outlet air temperature, ambient temperature, and temperature difference ΔT, where ΔT = T 环温 -T 出风 It also determines whether to perform frequency ramp-up / ramp-down operation.

[0132] Specifically, after the air conditioner has been running for t0 minutes at its initial settings, the system begins to detect and calculate the ambient temperature T. 环温 With the outlet air temperature T 出风 The system calculates the temperature difference ΔT and determines whether frequency adjustment is needed based on the difference between ΔT and the preset optimal inlet and outlet air temperature difference ΔT1. If ΔT < ΔT1-1, the system operates at a higher frequency; if ΔT > ΔT1+1, the system operates at a lower frequency. When ΔT satisfies ΔT1-1 ≤ ΔT ≤ ΔT1+1, i.e., fluctuates within ±1℃ of the optimal temperature difference, the system maintains its current frequency.

[0133] Steps S105, S106, S107, S108, S109: Keep the frequency F constant and adjust the water flow rate M.

[0134] Specifically, at the determined optimal operating frequency, after running for t1 minutes, the system begins to detect and calculate the outlet water temperature T. 出水 With inlet water temperature T 进水 Temperature difference △T 水 And according to △T 水 The optimal inlet and outlet water temperature difference △T 水目标 The difference between ΔT and ΔT is used to determine whether the water flow rate M needs to be adjusted. 水 <△T 水目标 When -1, the system reduces the water flow by closing the water valve opening; when ΔT 水 >△T 水目标 At this time, the system increases the water flow by widening the water valve opening. When ΔT 水目标 -1≤△T 水 ≤△T 水目标 At that time, the system operates stably at the current water flow rate.

[0135] Steps S111, S112, and S113: Adjust the refrigerant flow path according to the outlet water temperature.

[0136] Specifically, the system monitors the outlet water temperature T in real time during the water flow regulation process. 出水 And according to T 出水Compared with the preset target outlet water temperature value △T 目标出水 The difference between T and T is used to determine whether the refrigerant flow path needs adjustment. 出水 <T 目标出水 When T is reached, the system controls the second solenoid valve to open, the two-way valves 1 and 3 to close, and the flow path of the plate auxiliary condenser to close; when T... 排气 >T 目标排气 At this time, the system controls the second solenoid valve to close, and the two-way valves 1 and 3 to open, opening the flow path of the plate-type auxiliary condenser, so as to reduce the load on the main condenser and control the outlet water temperature.

[0137] In another embodiment, the constant temperature dehumidification mode control logic is as follows: Figure 5 As shown, the specific control method is as follows:

[0138] Turn on the air conditioner and check the ambient temperature.

[0139] Specifically, when the air conditioner receives the start-up signal, the air inlet damper and the upper air guide plate open, and the transmission rod and the moving air guide plate rotate to angles α2 and β2, respectively; the indoor ambient temperature is detected, and the system automatically sets the initial frequency F1 and the initial water flow rate M1 according to the ambient temperature.

[0140] Steps T101, T102, T103, T104: Run for t2 minutes with the initial set parameters, start detecting the outlet air temperature and ambient temperature, and determine whether to perform frequency increase / decrease operation.

[0141] Specifically, after the air conditioner has been running for t2 minutes at its initial settings, the system begins to detect and calculate the ambient temperature T. 环温 With the outlet air temperature T 出风 The system calculates the temperature difference ΔT and uses ΔT to determine whether frequency adjustment is needed. If ΔT > 1, the system operates at an increased frequency; if ΔT < 1, the system operates at a decreased frequency. When ΔT satisfies -1 ≤ ΔT ≤ 1, i.e., the temperature difference fluctuates within ±1℃, the system maintains its current frequency.

[0142] Steps T105, T106, T107, T108, T109: Keep the frequency F constant and adjust the water flow rate M.

[0143] Specifically, at the determined optimal operating frequency, after running for t3 minutes, the system begins to detect and calculate the outlet water temperature T. 出水 With inlet water temperature T 进水 Temperature difference △T 水 And according to △T 水 The optimal inlet and outlet water temperature difference △T 水目标 The difference between ΔT and ΔT is used to determine whether the water flow rate M needs to be adjusted. 水 <△T 水目标 When -1, the system reduces the water flow by closing the water valve opening; when ΔT水 >△T 水目标 At this time, the system increases the water flow by widening the water valve opening. When ΔT 水目标 -1≤△T 水 ≤△T 水目标 At that time, the system operates stably at the current water flow rate.

[0144] Steps T111, T112, and T113: Adjust the refrigerant flow path according to the outlet water temperature.

[0145] Specifically, the system monitors the outlet water temperature T in real time during the water flow regulation process. 出水 And according to T 出水 Compared with the preset target outlet water temperature value △T 目标出水 The difference between T and T is used to determine whether the refrigerant flow path needs adjustment. 出水 <T 目标出水 When T is reached, the system controls the second solenoid valve to open, the two-way valves 1 and 3 to close, and the flow path of the plate auxiliary condenser to close; when T... 排气 >T 目标排气 At this time, the system controls the second solenoid valve to close, and the two-way valves 1 and 3 to open, opening the flow path of the plate-type auxiliary condenser, so as to reduce the load on the main condenser and control the outlet water temperature.

[0146] In the different embodiments provided by this invention, the same parameters, terms, logic, etc. should be understood to have the same meaning, and this application does not intentionally repeat the description in each embodiment.

[0147] Exemplary embodiments of the present disclosure have been specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structures, arrangements, or implementation methods described herein; rather, the present disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1. An integrated air conditioner, characterized in that, The air conditioner includes: The housing is internally divided into an upper chamber and a lower chamber; The evaporator is located in the upper chamber; The main condenser is located in the lower chamber; The compressor is located in the lower chamber and on one side of the main condenser; The upper chamber is provided with an air inlet and an air inlet baffle corresponding to the evaporator, a first air outlet and a first air guide plate corresponding to the first air outlet; The lower chamber is provided with a second air outlet and a second air guide plate corresponding to the second air outlet; The upper chamber is provided with a cooling air duct connecting the air inlet and a first air outlet duct connecting the cooling air duct and the first air outlet, and the evaporator is disposed on the cooling air duct. The lower chamber forms a second air outlet duct that connects the cooling air duct and the second air outlet; the compressor and the main condenser are located on the second air outlet duct, and the compressor is located upstream of the main condenser; The air conditioner has a main refrigerant flow path and a bypass refrigerant flow path. The air conditioner also has an auxiliary condenser. The main condenser is located on the main refrigerant flow path, and the auxiliary condenser is located on the bypass refrigerant flow path and in the flow path of the second air outlet duct of the lower chamber. The auxiliary condenser is air-cooled and can be selectively connected in series with the main condenser in the refrigeration system flow path of the air conditioner through the bypass refrigerant flow path. The gaseous refrigerant discharged from the compressor first flows through the auxiliary condenser and then through the main condenser. In cooling mode and during the initial operation of the air conditioner, the bypass refrigerant flow path is shut off; In cooling mode, when the temperature of the water in the main condenser is higher than the system's preset upper limit for water temperature, the bypass refrigerant flow path is opened. An air guide assembly is provided between the upper chamber and the lower chamber. The air guide assembly is used to control the switching between the first air outlet duct and the second air outlet duct. When the air guide assembly is in a first working state, the first air outlet duct is closed, and the cooling duct is connected to the second air outlet duct. When the air guide assembly is in a second working state, the second air outlet duct is closed, and the cooling duct is connected to the first air outlet duct. The air conditioner has a cooling mode and a constant temperature dehumidification mode. When the air conditioner is running in cooling mode, the air guide component is controlled to be in a second working state. When the air conditioner is running in constant temperature dehumidification mode, the air guide component is controlled to be in a first working state.

2. The integrated air conditioner as described in claim 1, characterized in that, The air guide assembly is located at the air outlet of the cooling air duct, and the air guide assembly includes a first movable volute, a second movable volute, a transmission rod, a moving air guide plate, and a drive motor. The first movable volute and the second movable volute are arranged opposite each other on both sides of the air outlet of the cooling air duct and can be retracted or extended on their respective sides. The movable air guide plate is movably disposed between the first movable volute tongue and the second movable volute tongue. One end of the transmission rod is connected to the motor drive, and the other end is connected to the moving air guide plate. When the air guide assembly is in the first working state, the moving air guide plate cooperates with the first movable volute to shut off the first air outlet duct, so that the cooling air duct is connected to the second air outlet duct. When the air guide assembly is in the second working state, the moving air guide plate cooperates with the second movable volute to shut off the second air outlet duct, so that the cooling air duct is connected to the first air outlet duct.

3. The integrated air conditioner as described in claim 2, characterized in that, A first partition is provided between the upper chamber and the lower chamber. When the air guide assembly is in the first working state, the first end of the moving air guide plate abuts against the first partition, and the second end cooperates with the first movable volute tongue. When the air guide assembly is in the second working state, the second end of the moving air guide plate abuts against the first partition, and the first end cooperates with the second movable volute tongue.

4. The integrated air conditioner as described in any one of claims 1-3, characterized in that, The main condenser is a shell-and-tube type, with water flowing in the inner tube, refrigerant flowing in the outer tube, and air flowing outside the tube in the second air outlet duct.

5. The integrated air conditioner as described in any one of claims 1-3, characterized in that, The lower chamber is provided with a compressor chamber and a main condenser chamber. The compressor is located in the compressor chamber, the main condenser is located in the main condenser chamber, and the auxiliary condenser is located in the compressor chamber. A second partition is provided between the main condenser chamber and the compressor chamber, and the second partition has a through hole for fluid communication between the main condenser chamber and the compressor chamber.

6. The integrated air conditioner as described in any one of claims 1-3, characterized in that, A first partition is provided between the upper chamber and the lower chamber; The integrated air conditioner has an evaporator base below the evaporator, which can collect the condensate produced by the evaporator. The integrated air conditioner has a water collection tank below the main condenser, which is used to collect the condensate produced by the evaporator. The water collection tank has an open structure.

7. A control method for controlling the integrated air conditioner according to any one of claims 1-6, characterized in that, In both cooling mode and constant temperature dehumidification mode, the control method further includes: Determine the indoor ambient temperature and the air outlet temperature of the air conditioner, and calculate the temperature difference ΔT between the indoor ambient temperature and the air outlet temperature of the air conditioner; The temperature difference ΔT is compared with the first and second set values ​​in the corresponding mode; The compressor operating frequency is adjusted based on the comparison results.

8. The control method as described in claim 7, characterized in that, The adjustment of the compressor operating frequency based on the comparison results includes: When the temperature difference ΔT is greater than the first set value, the compressor is made to operate at a reduced frequency. When the temperature difference ΔT is less than the second set value, the compressor is operated at a higher frequency. When the temperature difference ΔT is less than or equal to the first set value and greater than or equal to the second set value, the compressor is kept running at the current frequency.

9. The control method as described in claim 8, characterized in that, The control method further includes: Determine the inlet and outlet water temperatures of the main condenser, and calculate the temperature difference ΔT between the inlet and outlet water temperatures. 水 ; The temperature difference ΔT 水 Compare with the third and fourth settings; The water flow rate in the outer casing of the main condenser is adjusted based on the comparison results.

10. The control method as described in claim 9, characterized in that, The step of regulating the water flow rate in the outer casing of the main condenser based on the comparison results includes: The temperature difference ΔT 水 When the flow rate exceeds the third preset value, increase the water flow rate; The temperature difference ΔT 水 When the water flow rate is less than the fourth set value, reduce the water flow rate; The temperature difference ΔT 水 When the current water flow rate is less than or equal to the third set value and greater than or equal to the fourth set value, the current water flow rate is maintained.

11. The control method as described in claim 10, characterized in that, In the process of regulating the water flow rate of the main condenser, the control method further includes: The outlet water temperature is compared with the preset target outlet water temperature; When the outlet water temperature is greater than the preset target outlet water temperature, the refrigerant discharged by the compressor is first heat-exchanged through the auxiliary condenser before entering the main condenser. When the outlet water temperature is less than or equal to the preset target outlet water temperature, the refrigerant discharged by the compressor is allowed to directly enter the main condenser.

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