An energy-saving and comfortable air-conditioning system suitable for all working conditions and a control method thereof

Abstract

The present invention discloses an energy-saving and comfortable air-conditioning system applicable to all working conditions and a control method thereof, belonging to the technical field of air-conditioning systems; the technical problem to be solved is: to provide an improvement in the hardware structure of an energy-saving and comfortable air-conditioning system applicable to all working conditions; the technical scheme adopted to solve the above technical problem is: comprising a compressor, an outdoor fan, an outdoor heat exchanger, an expansion valve, and an air-conditioning four-way valve arranged inside an outdoor unit, an indoor heat exchanger and an indoor air supply fan arranged inside an indoor unit, and also comprising a first reversing valve, a forward and reverse reversing fan, a moisture absorption module, an air inlet reversing slider, a phase change heat storage module, and a second reversing valve; the first port of the first reversing valve is connected to the outdoor heat exchanger through the expansion valve, the second port of the first reversing valve is connected to the moisture absorption module, and the third port is connected to the phase change heat storage module; the air inlet reversing slider is arranged at the air inlet of the indoor unit, and the second reversing valve is respectively connected to the indoor heat exchanger, the moisture absorption module, and the phase change heat storage module; the present invention is applied to air conditioning.

Description

Technical Field

[0001] The invention discloses an energy-saving and comfortable air-conditioning system applicable to all working conditions and a control method thereof, belonging to the technical field of energy-saving and comfortable air-conditioning systems applicable to all working conditions. Background Art

[0002] The existing air conditioning dehumidification technology is to reduce the evaporation temperature to below the indoor air dew point temperature. The indoor temperature drops rapidly and significantly while dehumidifying. Due to the delayed change of the physical state of the refrigerant in the air conditioning refrigeration system, it is easy to over-dehumidify, resulting in dry and cold indoor air, easy to get air conditioning disease, and not energy-saving. The existing air conditioning system cycle consists of a compressor, an expansion valve, an evaporator, and a condenser. There are the following problems: it is impossible to realize the free adjustment function of the humidity threshold for automatic humidification and energy-saving dehumidification, and it is impossible to greatly improve energy efficiency; it is impossible to realize the long-term delay comfort function of cooling and heating shutdown; it is impossible to realize the function of fast defrosting in winter and no room temperature fluctuation; it is rarely equipped with the function of purifying fresh air. As a result, it is impossible to meet the user's demand for precise temperature and humidity control and energy-saving control, it is impossible to meet the user's demand for delayed comfort after shutdown, it is impossible to meet the user's demand for fast defrosting in winter and no room temperature fluctuation, and it is impossible to meet the user's demand for purifying fresh air and haze. Therefore, the present invention proposes an energy-saving and comfortable air conditioning system and a control method thereof suitable for all working conditions, and solves the above four problems at the same time. Summary of the invention

[0003] In order to overcome the deficiencies in the prior art, the present invention aims to solve the technical problem of providing an improvement in the hardware structure of an energy-saving and comfortable air-conditioning system applicable to all working conditions.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: an energy-saving and comfortable air-conditioning system suitable for all working conditions, including an outdoor unit and an indoor unit, wherein the outdoor unit is provided with a compressor, an outdoor fan, an outdoor heat exchanger, an expansion valve, and an air-conditioning four-way valve, wherein the compressor is connected to the outdoor heat exchanger through the air-conditioning four-way valve, wherein the indoor unit is provided with an indoor heat exchanger and an indoor air supply fan, wherein the indoor heat exchanger is connected to the outdoor heat exchanger through the air-conditioning four-way valve, and further includes a first reversing valve, a forward and reverse reversing fan, a moisture absorption module, an air inlet reversing slider, a phase change heat storage module, and a second reversing valve;

[0005] The first reversing valve is arranged inside the outdoor unit, the first port of the first reversing valve is connected to the outdoor heat exchanger through the expansion valve, the second port of the first reversing valve is connected to the moisture absorption module through a pipeline, and the third port of the first reversing valve is connected to the phase change heat storage module through a pipeline;

[0006] The forward and reverse rotating fans are arranged on the outside of the indoor unit through pipelines, the desiccant module, the phase change heat storage module and the second reversing valve are arranged inside the indoor unit, the air inlet reversing slider is arranged at the air inlet of the desiccant module and the phase change heat storage module of the indoor unit, the first port of the second reversing valve is connected to the indoor heat exchanger through a pipeline, the second port of the second reversing valve is connected to the desiccant module through a pipeline, and the third port of the second reversing valve is connected to the phase change heat storage module through a pipeline.

[0007] A purification module is arranged on the pipeline connecting the forward and reverse blower and the indoor unit, and the purification module comprises a low, medium and high three-level filtration system of bag dust removal, activated carbon adsorption and lysozyme HEPA filter disinfection and sterilization.

[0008] It also includes an air-conditioning controller, which is connected to the compressor, the outdoor fan, the first reversing valve, the air-conditioning four-way valve, the forward and reverse fans, the air inlet reversing slider, the second reversing valve, and the indoor air supply fan through wires.

[0009] The moisture absorption module specifically adopts a moisture absorption material with a MOF structure, a molecular formula of C5H2N2O5Al, a molecular weight of 197.06, and a CAS NO.: 2050043-41-7.

[0010] The phase change thermal storage module specifically adopts paraffin material.

[0011] A control method for an energy-saving and comfortable air-conditioning system applicable to all working conditions comprises the following steps:

[0012] Step 1: The air conditioning controller controls the air conditioning four-way valve to connect ad and bc to realize the air conditioning cooling condition, and the air conditioning controller controls the air conditioning four-way valve to connect ac and bd to realize the air conditioning heating condition. In the cooling condition, the phase change thermal storage module stores cold, and in the heating condition, the phase change thermal storage module stores heat;

[0013] Step 2: Control the position of the air inlet reversing slider through the air conditioner controller to cover the air inlet of the moisture absorption module, so that the indoor air enters the air inlet of the phase change thermal storage module, and the air flows through the phase change thermal storage module and the indoor heat exchanger in turn and is then sent back into the room;

[0014] When the user turns off the air conditioner, the indoor air supply fan will be shut down after a delay, and the stored cold or heat will continue to be supplied into the room, realizing the delayed comfort function of shutting down the air conditioner before going out or before going to bed;

[0015] Step 3: When the air conditioner is in cooling mode, the refrigerant releases heat in the outdoor heat exchanger for defrosting, absorbs heat in the phase change heat storage module, and the indoor air supply blower is stopped or runs at a low speed, and the air temperature blown out by the indoor unit is controlled not to be lower than the current indoor temperature;

[0016] Step 4: Control the position of the air inlet reversing slider through the air conditioner controller to cover the air inlet of the phase change thermal storage module, so that the air inlet of the moisture absorption module enters the indoor air, and the air flows through the moisture absorption module and the indoor heat exchanger in turn and is then sent into the room again;

[0017] Turn on the forward and reverse fan to blow the outside air into the desiccant module. The desiccant module MOF absorbs moisture. When the indoor air flows through the desiccant module, the moisture is brought into the room, realizing the automatic humidification function.

[0018] When the air conditioning function is not needed, the air conditioning controller turns on the forward and reverse fans to blow indoors and the indoor air supply fan to deliver fresh air from outdoors to indoors.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the energy-saving and comfortable air-conditioning system suitable for all working conditions provided by the present invention can adopt the principle of independent control of temperature and humidity, and the dehumidification module directly uses hygroscopic materials to absorb moisture in the air, so the air-conditioning evaporation temperature does not need to be lowered below the air dew point temperature, which is more energy-saving and efficient, the physical state of the system refrigerant is easier to control, and the temperature control is more precise; the independent control of indoor air temperature and humidity is more flexible, the comfort is better, and it is not easy to get air-conditioning disease. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings:

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the present invention realizing the time-delay comfort function and the defrost comfort function;

[0023] Figure 3 This is a schematic diagram of the structure of the present invention that realizes the functions of automatic humidification, energy-saving dehumidification, and fresh air purification;

[0024] In the figure: 1 is a compressor; 2 is an outdoor fan; 3 is an outdoor heat exchanger; 4 is an expansion valve; 5 is a first reversing valve; 6 is an air conditioning four-way valve; 7 is an outdoor unit; 8 is an indoor unit; 9 is an indoor heat exchanger; 10 is a forward and reverse fan; 11 is a moisture absorption module; 12 is an air inlet reversing slider; 13 is a phase change heat storage module; 14 is a second reversing valve; 15 is an indoor air supply fan. DETAILED DESCRIPTION

[0025] like Figures 1 to 3As shown, the present invention is an energy-saving and comfortable air-conditioning system suitable for all working conditions, including an outdoor unit 7 and an indoor unit 8, wherein the outdoor unit 7 is provided with a compressor 1, an outdoor fan 2, an outdoor heat exchanger 3, an expansion valve 4, and an air-conditioning four-way valve 6, wherein the compressor 1 is connected to the outdoor heat exchanger 3 through the air-conditioning four-way valve 6, wherein the indoor unit 8 is provided with an indoor heat exchanger 9 and an indoor air supply fan 15, wherein the indoor heat exchanger 9 is connected to the outdoor heat exchanger 3 through the air-conditioning four-way valve 6, and further includes a first reversing valve 5, a forward and reverse reversing fan 10, a moisture absorption module 11, an air inlet reversing slider 12, a phase change heat storage module 13, and a second reversing valve 14;

[0026] The first reversing valve 5 is arranged inside the outdoor unit 7, the first port of the first reversing valve 5 is connected to the outdoor heat exchanger 3 through the expansion valve 4, the second port of the first reversing valve 5 is connected to the moisture absorption module 11 through a pipeline, and the third port of the first reversing valve 5 is connected to the phase change heat storage module 13 through a pipeline;

[0027] The forward and reverse fan 10 is arranged on the outside of the indoor unit 8 through a pipeline, the desiccant module 11, the phase change heat storage module 13, and the second reversing valve 14 are arranged inside the indoor unit 8, the air inlet reversing slider 12 is arranged at the air inlet of the desiccant module 11 and the phase change heat storage module 13 of the indoor unit 8, the first port of the second reversing valve 14 is connected to the indoor heat exchanger 9 through a pipeline, the second port of the second reversing valve 14 is connected to the desiccant module 11 through a pipeline, and the third port of the second reversing valve 14 is connected to the phase change heat storage module 13 through a pipeline.

[0028] A purification module is provided on the pipeline connecting the forward and reverse blower 10 and the indoor unit 8. The purification module includes a low, medium and high three-level filtration system of bag dust removal, activated carbon adsorption and lysozyme HEPA filter disinfection and sterilization.

[0029] It also includes an air-conditioning controller, which is connected to the compressor 1, the outdoor fan 2, the first reversing valve 5, the air-conditioning four-way valve 6, the forward and reverse fans 10, the air inlet reversing slider 12, the second reversing valve 14, and the indoor air supply fan 15 through wires.

[0030] The moisture absorption module 11 specifically adopts a moisture absorption material with a MOF structure, a molecular formula of C5H2N2O5Al, a molecular weight of 197.06, and CAS NO.: 2050043-41-7.

[0031] The phase change heat storage module 13 is specifically made of paraffin material.

[0032] A control method for an energy-saving and comfortable air-conditioning system applicable to all working conditions comprises the following steps:

[0033] Step 1: The air conditioning controller controls the air conditioning four-way valve 6 to connect ad and bc to realize the air conditioning cooling condition, and the air conditioning controller controls the air conditioning four-way valve 6 to connect ac and bd to realize the air conditioning heating condition. In the cooling condition, the phase change heat storage module 13 stores cold, and in the heating condition, the phase change heat storage module 13 stores heat;

[0034] Step 2: Control the position of the air inlet reversing slider 12 through the air conditioning controller to cover the air inlet of the moisture absorption module 11, so that the air inlet of the phase change heat storage module 13 enters the indoor air, and the air flows through the phase change heat storage module 13 and the indoor heat exchanger 9 in turn and is then sent into the room again;

[0035] When the user turns off the air conditioner, the indoor air supply fan 15 is turned off with a delay, and continues to supply the stored cold or stored heat into the room, realizing the delayed comfort function of turning off the air conditioner before going out or before going to bed;

[0036] Step 3: When the air conditioner is in cooling mode, the refrigerant releases heat in the outdoor heat exchanger 3 for defrosting, absorbs heat in the phase change heat storage module 13, and the indoor air supply fan 15 is turned off or runs at a low speed to control the air temperature blown out by the indoor unit to be no lower than the current indoor temperature;

[0037] Step 4: The air inlet reversing slider 12 is controlled by the air conditioner controller to cover the air inlet of the phase change heat storage module 13, so that the air inlet of the moisture absorption module 11 enters the indoor air, and the air flows through the moisture absorption module 11 and the indoor heat exchanger 9 in turn and is then sent into the room again;

[0038] The forward and reverse blower 10 is turned on to blow the external air into the moisture absorption module 11. The moisture absorption module MOF absorbs moisture. When the indoor air flows through the moisture absorption module 11, the moisture is brought into the room, thereby realizing the automatic humidification function.

[0039] When the air conditioning function is not needed, the air conditioning controller turns on the forward and reverse blower 10 to blow indoor air and the indoor air supply blower to send fresh air from the outside into the room.

[0040] The dehumidification function of the energy-saving and comfortable air-conditioning system applicable to all working conditions provided by the present invention adopts the principle of independent control of temperature and humidity. The dehumidification module 11 directly uses hygroscopic materials to absorb moisture in the air, so the air-conditioning evaporation temperature does not need to be reduced below the air dew point temperature, which is more energy-saving and efficient, and the physical state of the system refrigerant is easier to control, and the temperature control is more accurate. Independent control of indoor air temperature and humidity is more flexible, the comfort is better, and it is not easy to get air-conditioning disease.

[0041] The air conditioning system of the present invention can achieve the following functions, which will be further described with reference to the accompanying drawings.

[0042] like Figure 2As shown, the principle of the delayed comfort function of the present invention is: the position of the air inlet reversing slider 12 covers the air inlet of the moisture absorption module 11, allowing the air inlet of the phase change heat storage module 13 to enter the indoor air, and the air flows through the phase change heat storage module 13 and the indoor heat exchanger 9 in sequence before being sent into the room again. In the cooling condition of the air conditioner, the air conditioning four-way valve 6 connects ad and bc, and in the heating condition of the air conditioner, the air conditioning four-way valve 6 connects ac and bd. In the cooling condition, the phase change heat storage module 13 stores cold, and in the heating condition, the phase change heat storage module 13 stores heat. When the user turns off the air conditioner, the indoor air supply fan 15 is shut down with a delay, and the stored cold or stored heat is continued to be delivered into the room, meeting the user's demand for the delayed comfort function of shutting down before going out or before going to bed.

[0043] The principle of the present invention to realize the defrosting comfort function is as follows: the air inlet reversing slider 12 covers the air inlet of the moisture absorption module 11, the air conditioning four-way valve 6 connects AD and BC, the refrigerant releases heat in the outdoor heat exchanger for defrosting, absorbs heat storage in the phase change heat storage module 13, and the indoor air supply fan 15 is shut down or runs at a low speed to ensure that the air temperature blown out by the indoor unit is not lower than the current indoor temperature. This avoids the conventional reverse cycle defrosting absorbing heat from the indoor air, causing users to feel uncomfortable due to the lowered room temperature.

[0044] like Figure 3 As shown, the principle of the automatic humidification function of the present invention is as follows: the position of the air inlet reversing slider 12 covers the air inlet of the phase change heat storage module 13, allowing the air inlet of the moisture absorption module 11 to enter the indoor air, and the air flows through the moisture absorption module 11 and the indoor heat exchanger 9 in sequence before being sent into the room again. Turn on the forward and reverse blower 10 to blow the external air into the moisture absorption module, and the moisture absorption module MOF absorbs moisture. When the indoor air flows through the moisture absorption module, the moisture is brought into the room, completing the automatic humidification function without manual water addition.

[0045] The principle of realizing the energy-saving dehumidification function of the present invention is as follows: the position of the air inlet reversing slider 12 covers the air inlet of the phase change heat storage module 13, allowing the air inlet of the moisture absorption module 11 to enter the indoor air, and the air flows through the moisture absorption module 11 and the indoor heat exchanger 9 in sequence before being sent into the room again. After the moisture absorption module 11 absorbs the indoor air to saturation, the air conditioning heating cycle is turned on, the air conditioning four-way valve 6 connects AC and BD, the refrigerant releases heat in the moisture absorption module to heat the moisture and precipitate from the moisture absorption MOF, the forward and reverse blower 10 is turned on, the air with precipitated moisture is blown out of the room, the dehumidification is completed, and then the dehumidification process continues (no manual pouring of water is required during the whole process). If the current air conditioner is in the heating condition, the indoor air supply fan 15 is turned on to continue uninterrupted heating; if the current air conditioner is in the cooling condition, the indoor air supply fan is not turned on to prevent the dehumidification heat from leaking into the room.

[0046] The principle of the present invention to realize the function of purifying fresh air is as follows: a purification module can be installed in the pipeline connecting the forward and reverse blower 10 and the indoor unit of the air conditioner. The purification module includes a low, medium and high three-level filtration system of bag dust removal, activated carbon adsorption, and lysozyme HEPA filter disinfection and sterilization. When the air conditioning function is not needed, the forward and reverse blower 10 can be turned on to blow indoors and the indoor air supply blower 15 to send safe and clean fresh air from the outdoors into the indoors. When the automatic humidification function is turned on, the function of purifying fresh air can also be turned on continuously, and the cooling or heating function of the indoor heat exchanger can be used to bring users a dual experience of thermal comfort and purification comfort.

[0047] The moisture absorption module material of the present invention is a MOF structure, with a molecular formula of C5H2N2O5Al, a molecular weight of 197.06, and a CAS NO.: 2050043-41-7. The phase change thermal storage module material is paraffin. The first reversing valve 5 and the second reversing valve 14 of the present invention can specifically adopt an ordinary four-way valve, and the S port of the four-way valve is welded shut.

[0048] What needs to be explained about the specific structure of the present invention is that the connection relationship between the various component modules adopted in the present invention is definite and feasible. Except for the special instructions in the embodiments, the specific connection relationship can bring about the corresponding technical effects, and solve the technical problems raised by the present invention without relying on the execution of the corresponding software program. Except for the specific instructions, the models and connection methods of the components, modules and specific components appearing in the present invention belong to the existing technologies such as published patents, published journal articles, or common knowledge that can be obtained by technical personnel in this field before the application date, and there is no need to elaborate, so that the technical solution provided in this case is clear, complete and feasible, and the corresponding physical products can be reproduced or obtained according to the technical means.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An energy-saving and comfortable air-conditioning system applicable to all working conditions, comprising an outdoor unit (7) and an indoor unit (8), wherein the outdoor unit (7) is provided with a compressor (1), an outdoor fan (2), an outdoor heat exchanger (3), an expansion valve (4), and an air-conditioning four-way valve (6), wherein the compressor (1) is connected to the outdoor heat exchanger (3) via the air-conditioning four-way valve (6), wherein the indoor unit (8) is provided with an indoor heat exchanger (9) and an indoor air supply fan (15), wherein the indoor heat exchanger (9) is connected to the outdoor heat exchanger (3) via the air-conditioning four-way valve (6), and wherein: It also includes a first reversing valve (5), a forward and reverse reversing fan (10), a moisture absorption module (11), an air inlet reversing slider (12), a phase change heat storage module (13), and a second reversing valve (14); The first reversing valve (5) is arranged inside the outdoor unit (7); a first port of the first reversing valve (5) is connected to the outdoor heat exchanger (3) via an expansion valve (4); a second port of the first reversing valve (5) is connected to the moisture absorption module (11) via a pipeline; and a third port of the first reversing valve (5) is connected to the phase change heat storage module (13) via a pipeline; The forward and reverse rotating fan (10) is arranged on the outside of the indoor unit (8) through a pipeline; the moisture absorption module (11), the phase change heat storage module (13) and the second reversing valve (14) are arranged inside the indoor unit (8); the air inlet reversing slider (12) is arranged at the air inlet of the moisture absorption module (11) and the phase change heat storage module (13) of the indoor unit (8); a first port of the second reversing valve (14) is connected to the indoor heat exchanger (9) through a pipeline; a second port of the second reversing valve (14) is connected to the moisture absorption module (11) through a pipeline; and a third port of the second reversing valve (14) is connected to the phase change heat storage module (13) through a pipeline; A purification module is provided on the pipeline connecting the forward and reverse rotating fan (10) and the indoor unit (8), wherein the purification module comprises a low, medium and high level filtering system for bag dust removal, activated carbon adsorption and lysozyme HEPA filter disinfection and sterilization; It also includes an air conditioning controller, which is connected to the compressor (1), the outdoor fan (2), the first reversing valve (5), the air conditioning four-way valve (6), the forward and reverse rotating fan (10), the air inlet reversing slider (12), the second reversing valve (14), and the indoor air supply fan (15) through wires.

2. The energy-saving and comfortable air-conditioning system applicable to all working conditions according to claim 1, characterized in that: The moisture absorption module (11) specifically adopts a moisture absorption material with a MOF structure, a molecular formula of C5H2N2O5Al, a molecular weight of 197.06, and a CAS NO.: 2050043-41-7.

3. The energy-saving and comfortable air-conditioning system applicable to all working conditions according to claim 1, characterized in that: The phase change heat storage module (13) specifically adopts paraffin material.

4. A control method for an energy-saving and comfortable air-conditioning system applicable to all working conditions as claimed in any one of claims 1 to 3, characterized in that: The steps include: Step 1: the air conditioning controller controls the air conditioning four-way valve (6) to connect ad and bc to realize the air conditioning cooling condition, and the air conditioning controller controls the air conditioning four-way valve (6) to connect ac and bd to realize the air conditioning heating condition. In the cooling condition, the phase change heat storage module (13) stores cold, and in the heating condition, the phase change heat storage module (13) stores heat; Step 2: Control the position of the air inlet reversing slider (12) through the air conditioner controller to cover the air inlet of the moisture absorption module (11), allowing the air inlet of the phase change heat storage module (13) to enter the indoor air, and the air flows through the phase change heat storage module (13) and the indoor heat exchanger (9) in sequence before being sent into the room again; When the user turns off the air conditioner, the indoor air supply fan (15) is turned off after a delay, and continues to supply the stored cold or stored heat into the room, thereby realizing the delayed comfort function of turning off the air conditioner before going out or before going to bed; Step 3: When the air conditioner is in cooling mode, the refrigerant releases heat in the outdoor heat exchanger (3) for defrosting, absorbs heat in the phase change heat storage module (13), and the indoor air supply fan (15) is turned off or runs at a low speed, so that the temperature of the air blown out by the indoor unit is controlled not to be lower than the current indoor temperature; Step 4: The air inlet reversing slider (12) is controlled by the air conditioner controller to cover the air inlet of the phase change heat storage module (13), allowing the air inlet of the moisture absorption module (11) to enter the indoor air, and the air flows through the moisture absorption module (11) and the indoor heat exchanger (9) in sequence before being sent into the room again; The forward and reverse rotating fans (10) are turned on to blow external air into the moisture absorption module (11). The moisture absorption module MOF absorbs moisture. When the indoor air flows through the moisture absorption module (11), the moisture is brought into the room, thereby realizing an automatic humidification function.

5. The control method of the energy-saving and comfortable air-conditioning system applicable to all working conditions according to claim 4 is characterized in that: When the air conditioning function is not needed, the air conditioning controller turns on the forward and reverse rotating fans (10) to blow air into the room and the indoor air supply fan (15) to deliver fresh air from the outside into the room.

Images