Air conditioning unit with drying function and control method thereof

Abstract

The invention discloses an air conditioning unit with a drying function and a control method thereof.The air conditioning unit with the drying function comprises a heat pump unit which comprises a compressor, a four-way valve, an indoor heat exchanger and a throttling device which are sequentially connected; a refrigerant pipeline between the throttling device and the four-way valve penetrates through the first heat exchange water tank and exchanges heat with the first heat exchange water tank; the drying equipment comprises a drying bin, a second heat exchange water tank connected with the indoor heat exchanger in parallel, a first condensation drying module and a second condensation drying module, the first condensation drying module and the second condensation drying module are located in the drying bin, the first condensation drying module communicates with the first heat exchange water tank through a first water path, and the second condensation drying module communicates with the second heat exchange water tank through a second water path. And the second condensing and drying module is communicated with the second heat exchange water tank through a second water path. The problem that in the prior art, condensation heat is not fully utilized in daily operation of an air conditioning system, and consequently the energy utilization rate is low is solved, and efficient utilization of energy is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioning unit with a drying function and a control method thereof. Background Art

[0002] The use of household air conditioners is becoming more and more popular. While helping users improve their comfort, they also release a lot of condensation heat during operation. The discharge of condensation heat will not only cause the air temperature around residential buildings to rise, forming a "heat island effect", but also cause low energy utilization because the heat is discharged in vain and not used.

[0003] At present, the commonly used condensation heat recovery method is to recover the condensation heat into the heat exchange medium through the heat recovery heat exchanger, and then use the collected condensation heat for domestic water or other purposes through the heat exchange of the heat exchange medium. The whole process requires a large number of heat exchanges, and in this process, the energy utilization efficiency is greatly reduced.

[0004] The heat exchange medium often uses refrigerants with good thermal properties, but the refrigerants have high requirements on the sealing and pressure resistance of the equipment. The refrigerant itself is relatively expensive, which will greatly increase the heat recovery cost and is not conducive to promotion.

[0005] With regard to the problem in the related art that the condensation heat of the air-conditioning system is not fully utilized in daily operation, resulting in low energy utilization, no effective solution has been proposed so far. Summary of the invention

[0006] The present invention provides an air conditioning unit with a drying function and a control method thereof, so as to at least solve the problem in the prior art that the condensation heat of the air conditioning system is not fully utilized in daily operation, resulting in low energy utilization rate.

[0007] To solve the above technical problems, according to one aspect of an embodiment of the present invention, an air conditioning unit with a drying function is provided, comprising: a heat pump unit, comprising: a compressor, a four-way valve, an indoor heat exchanger, and a throttling device connected in sequence; a first heat exchange water tank, wherein a refrigerant pipeline between the throttling device and the four-way valve passes through the first heat exchange water tank and exchanges heat with the first heat exchange water tank; a drying device, comprising: a drying chamber, a second heat exchange water tank arranged in parallel with the indoor heat exchanger, a first condensation drying module and a second condensation drying module located in the drying chamber, wherein the first condensation drying module is connected to the first heat exchange water tank through a first water path, and is used to use the heat of the first heat exchange water tank to dry the drying chamber when the heat pump unit is cooling, and to use the coldness of the first heat exchange water tank to condense and drain water for the drying chamber when the heat pump unit is heating; the second condensation drying module is connected to the second heat exchange water tank through a second water path, and is used to use the coldness of the second heat exchange water tank to condense and drain water for the drying chamber when the heat pump unit is cooling, and to use the heat of the second heat exchange water tank to dry the drying chamber when the heat pump unit is heating.

[0008] Furthermore, the drying equipment also includes: a bypass refrigerant pipe, one end of which is connected to a first connection point on the pipeline between the four-way valve and the indoor heat exchanger, and the other end is connected to a second connection point on the pipeline between the throttling device and the first water exchange tank, and the bypass refrigerant pipe passes through the second water exchange tank to exchange heat with the second water exchange tank.

[0009] Furthermore, the heat pump unit also includes: a solenoid valve located on the pipeline between the throttling device and the first water exchange tank; a backup heat exchanger arranged in parallel with the solenoid valve; wherein, when the first water exchange tank cannot meet the outdoor heat exchange demand, the solenoid valve is closed, and the backup heat exchanger is used together with the first water exchange tank for heat exchange.

[0010] Furthermore, the drying equipment also includes: a water receiving pan, located below the first condensation drying module and the second condensation drying module, for receiving condensation drainage; a first circulating water pump, located on the first water channel, for controlling the water flow rate of the first water channel; a second circulating water pump, located on the second water channel, for adjusting the water flow rate of the second water channel; a bypass electronic expansion valve, located on the bypass refrigerant pipe, for adjusting the refrigerant flow rate of the bypass refrigerant pipe.

[0011] Furthermore, it also includes: a first domestic water module connected to the first heat exchange water tank; and a second domestic water module connected to the second heat exchange water tank.

[0012] According to another aspect of an embodiment of the present invention, a control method for an air-conditioning unit with a drying function is provided, which is applied to the air-conditioning unit with a drying function as described above, and the method comprises: detecting the operating mode of the air-conditioning unit with a drying function; wherein the operating mode comprises at least: cooling and drying mode, cooling mode, heating and drying mode, heating mode, and drying mode; and controlling the operation of the heat pump unit and the drying equipment according to the operating mode.

[0013] Furthermore, when the operating mode is the cooling and drying mode, the operation of the heat pump unit and the drying equipment is controlled according to the operating mode, including: controlling the four-way valve of the heat pump unit to enter the cooling mode, and opening the solenoid valve of the heat pump unit; obtaining the refrigerant temperature of the refrigerant pipeline between the indoor heat exchanger of the heat pump unit and the solenoid valve, and controlling the opening of the throttling device of the heat pump unit and the opening of the bypass electronic expansion valve of the drying equipment according to the refrigerant temperature; controlling the first circulating water pump and the second circulating water pump of the drying equipment to turn on.

[0014] Furthermore, when the operation mode is the cooling mode, the operation of the heat pump unit and the drying equipment is controlled according to the operation mode, including: controlling the four-way valve of the heat pump unit to enter the cooling mode, the solenoid valve of the heat pump unit is opened, and when the first domestic water module does not need to use hot water, the solenoid valve is controlled to be closed, and a standby heat exchanger and the first water exchange tank are used to perform heat exchange; obtaining the refrigerant temperature of the refrigerant pipeline between the indoor heat exchanger of the heat pump unit and the solenoid valve, and controlling the opening of the throttling device of the heat pump unit according to the refrigerant temperature; controlling the first circulating water pump, the second circulating water pump and the bypass electronic expansion valve of the drying equipment to be closed.

[0015] Furthermore, when the operation mode is the heating and drying mode, the operation of the heat pump unit and the drying equipment is controlled according to the operation mode, including: controlling the four-way valve of the heat pump unit to enter the heating mode, closing the solenoid valve of the heat pump unit, and using the standby heat exchanger and the first water exchanger tank to perform heat exchange; obtaining the refrigerant temperature of the refrigerant pipeline between the indoor heat exchanger of the heat pump unit and the solenoid valve, and controlling the opening of the throttling device of the heat pump unit and the opening of the bypass electronic expansion valve of the drying equipment according to the refrigerant temperature; controlling the first circulating water pump and the second circulating water pump of the drying equipment to start.

[0016] Furthermore, when the operation mode is the heating mode, the operation of the heat pump unit and the drying equipment is controlled according to the operation mode, including: controlling the four-way valve of the heat pump unit to enter the heating mode, closing the solenoid valve of the heat pump unit, and using the standby heat exchanger and the first water exchange tank to perform heat exchange; obtaining the refrigerant temperature of the refrigerant pipeline between the indoor heat exchanger of the heat pump unit and the solenoid valve, and controlling the opening of the throttling device of the heat pump unit according to the refrigerant temperature; controlling the first circulating water pump, the second circulating water pump and the bypass electronic expansion valve of the drying equipment to close.

[0017] Furthermore, when the operating mode is the drying mode, the operation of the heat pump unit and the drying equipment is controlled according to the operating mode, including: controlling the four-way valve of the heat pump unit to enter the cooling mode, the solenoid valve of the heat pump unit to open, and the throttling device of the heat pump unit to close; controlling the first circulating water pump, the second circulating water pump and the bypass electronic expansion valve of the drying equipment to open.

[0018] According to another aspect of an embodiment of the present invention, there is provided a storage medium containing computer executable instructions, which are used to execute the control method of the air-conditioning unit with a drying function as described above when executed by a computer processor.

[0019] In the present invention, a heat pump system equipped with a dryer is provided, comprising: a heat pump unit, the heat pump system adopts a first water exchange tank as a condenser, so that the condensation heat is fully absorbed by the water in the water tank, thereby further realizing the utilization of condensation heat. For this purpose, the first condensation and drying module in the drying equipment is connected with the first water exchange tank through the first water path, so that when the heat pump unit is refrigerating, the heat of the first water exchange tank is used to dry the drying bin, so that the heat pump system can meet the daily refrigeration and heating functions while using the condensation heat of the air-conditioning system for drying operations and using the evaporative cooling capacity for condensation and drainage operations, thereby realizing efficient use of energy. In addition, in order to realize the complete functions of the dryer, a second condensation and drying module is also provided in the dryer, and the first condensation and drying module and the second condensation and drying module can interchange functions, so that the heat pump system can perform condensation, drainage and drying of the drying bin regardless of whether it is in the cooling mode or the heating mode. Therefore, the air-conditioning unit with drying function in the present invention effectively solves the problem of insufficient utilization of condensation heat in the prior art, resulting in low energy utilization rate, and realizes efficient utilization of energy. It also fully meets the condensation drainage and drying functions of the dryer. Compared with the system with full-flow refrigerant heat exchange, the dryer uses water as the heat exchange medium, which is not only simpler in structure, more convenient to install, but also lower in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1is a schematic diagram of an optional structure of an air-conditioning unit with a drying function according to an embodiment of the present invention;

[0021] Figure 2 is an optional flow chart of a control method for an air-conditioning unit with a drying function according to an embodiment of the present invention;

[0022] Figure 3 is an operation schematic diagram of a cooling and drying mode air conditioning unit according to an embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of the operation of the air conditioning unit in cooling mode according to an embodiment of the present invention;

[0024] Figure 5 is an operation schematic diagram of an air conditioning unit in a heating and drying mode according to an embodiment of the present invention;

[0025] Figure 6 is a schematic diagram of the operation of the air conditioning unit in heating mode according to an embodiment of the present invention;

[0026] Figure 7 Schematic diagram of the operation of a drying mode air conditioning unit according to an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 1. Compressor; 2. Four-way valve; 3. First water exchange tank; 4. Dryer; 5. Temperature sensor; 6. Standby heat exchanger; 7. First circulating water pump; 8. First electronic expansion valve; 9. Second electronic expansion valve; 10. Third electronic expansion valve; 11. Fourth electronic expansion valve; 12. Indoor side; 13. Indoor heat exchanger; 14. Second circulating water pump; 15. Solenoid valve; 16. Drying chamber; 17. Second condensation drainage module; 18. First condensation drainage module; 19. Water receiving tray; 20. First domestic water module; 21. Second domestic water module; 22. Bypass electronic expansion valve; 23. Second water exchange tank. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0031] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0032] It should be understood that although the terms first, second, third, etc. may be used to describe controllers in embodiments of the present invention, these controllers should not be limited to these terms. These terms are only used to distinguish controllers connected to different devices. For example, without departing from the scope of embodiments of the present invention, a first controller may also be referred to as a second controller, and similarly, a second controller may also be referred to as a first controller.

[0033] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0034] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0035] The optional embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0036] Example 1

[0037] In a preferred embodiment 1 of the present invention, an air conditioning unit with a drying function is provided. Specifically, Figure 1 An optional structural diagram of the unit is shown, such as Figure 1 As shown, the unit includes:

[0038] The heat pump unit comprises: a compressor 1, a four-way valve 2, an indoor heat exchanger 13, and a throttling device connected in sequence; a first heat exchange water tank 3, a refrigerant pipeline between the throttling device and the four-way valve 2 passes through the first heat exchange water tank 3, and exchanges heat with the first heat exchange water tank 3;

[0039] The drying equipment comprises: a drying chamber 16, a second water exchange tank 23 connected in parallel with the indoor heat exchanger 13, a first condensation drying module 18 and a second condensation drying module 17 located in the drying chamber 16, wherein the first condensation drying module 18 is connected with the first water exchange tank 3 through a first water path, and is used to use the heat of the first water exchange tank 3 to dry the drying chamber 16 when the heat pump unit is cooling, and to use the cold of the first water exchange tank 3 to condense and drain the drying chamber 16 when the heat pump unit is heating; the second condensation drying module 17 is connected with the second water exchange tank 23 through a second water path, and is used to use the cold of the second water exchange tank 23 to condense and drain the drying chamber 16 when the heat pump unit is cooling, and to use the heat of the second water exchange tank 23 to dry the drying chamber 16 when the heat pump unit is heating. The drying machine is provided with a drying module and a condensation drainage module with interchangeable functions, so that the air conditioning system can realize efficient use of energy by using the condensation heat of the air conditioning system to perform drying operations and using the evaporative cold to perform condensation and drainage operations while meeting the daily cooling and heating functions. Among them, the refrigerant flows in the flow path of the heat pump unit, and the dryer exchanges heat with the pump system through the water tank, thereby achieving the purpose of drying and condensation drainage in the dryer. Compared with the system with full-flow refrigerant heat exchange, partial heat exchange uses water as the medium, the system structure is simpler, installation is more convenient, and the cost is lower.

[0040] In the above embodiment, a heat pump system with a dryer is provided, including: a heat pump unit, the heat pump system uses a first water exchange tank as a condenser, so that the condensation heat is fully absorbed by the water in the water tank, thereby further realizing the utilization of condensation heat. For this purpose, the first condensation and drying module in the drying equipment is connected with the first water exchange tank through the first water path, so that when the heat pump unit is cooling, the heat of the first water exchange tank is used to dry the drying bin, so that the heat pump system can meet the daily cooling and heating functions while using the condensation heat of the air conditioning system for drying operations and using the evaporative cooling for condensation and drainage operations, thereby realizing efficient use of energy. In addition, in order to realize the complete functions of the dryer, a second condensation and drying module is also provided in the dryer, and the first condensation and drying module and the second condensation and drying module can interchange functions, so that the heat pump system can perform condensation, drainage and drying of the drying bin regardless of whether it is in cooling mode or heating mode. Therefore, the air-conditioning unit with drying function in the present invention effectively solves the problem of insufficient utilization of condensation heat in the prior art, resulting in low energy utilization rate, and realizes efficient utilization of energy. It also fully meets the condensation drainage and drying functions of the dryer. Compared with the system with full-flow refrigerant heat exchange, the dryer uses water as the heat exchange medium, which is not only simpler in structure, more convenient to install, but also lower in cost.

[0041] like Figure 1 As shown, the air conditioning unit should have at least one indoor unit, a compressor, a heat pump dryer with a drying module and a condensation drainage module, a throttling device to control the flow of refrigerant in the heat exchanger, and a spare condenser and water tank to help the outdoor unit exchange heat. The air conditioning system should have at least cooling and heating functions. The indoor side of the air conditioning unit can include multiple sets of heat exchangers and throttling devices to meet the heat exchange needs of multiple rooms.

[0042] At the same time, in order to realize the second water exchange tank 23 set in parallel with the indoor heat exchanger 13, the drying equipment also includes: a bypass refrigerant pipe, one end of which is connected to the first connection point on the pipeline between the four-way valve 2 and the indoor heat exchanger 13, and the other end is connected to the second connection point on the pipeline between the throttling device and the first water exchange tank 3. The bypass refrigerant pipe passes through the second water exchange tank 23 and exchanges heat with the second water exchange tank 23. The bypass electronic expansion valve 22 is located on the bypass refrigerant pipe and is used to adjust the refrigerant flow of the bypass refrigerant pipe. When refrigeration and drying are running at the same time, a part of the refrigerant enters the bypass refrigerant pipe, enters the second water exchange tank 23 after throttling through the bypass electronic expansion valve 22, absorbs heat, and then flows into the four-way valve 2 to return to the compressor 1. The water in the second water exchange tank 23 releases heat and becomes cold water. The cold water is guided to the condensation drainage module in the dryer through the circulating water pump to absorb heat for condensation and drainage, and then returns to the second water exchange tank 23 to release heat and circulate. During the separate drying operation, the heat pump unit operates in the cooling mode, and the refrigerant passes through the compressor 1 and the four-way valve 2, enters the second heat exchange water tank 23 to release heat, and no longer passes through the indoor side, so that the air conditioning unit can achieve a separate drying operation and be used as a dryer. By setting up the bypass refrigerant pipe, the second heat exchange water tank 23 can achieve the condensation drainage or drying function of the dryer, not only when the heat pump unit is used, but also when it is dried separately, thereby expanding the application scenarios and functions of the air conditioning unit and improving the applicability of the air conditioning unit.

[0043] In a preferred embodiment of the present invention, the first water exchange tank 3 plays the role of a condenser, thereby achieving complete absorption of condensation heat. Since the air conditioning unit can achieve multiple functions, such as cooling operation and when hot water is not used for a long time, the heat exchange of the first water exchange tank 3 cannot meet the indoor heat exchange demand. Therefore, the heat pump unit also includes: a solenoid valve 15, located on the pipeline between the throttling device and the first water exchange tank 3; a standby heat exchanger 6, which is arranged in parallel with the solenoid valve 15; wherein, when the first water exchange tank 3 cannot meet the outdoor heat exchange demand, the solenoid valve 15 is closed, and the standby heat exchanger 6 and the first water exchange tank 3 are used to exchange heat together. The refrigerant after heat exchange in the first water exchange tank 3 enters the standby heat exchanger 6 for heat exchange again, at which time a small amount of condensation heat will be released, but the refrigeration effect of the unit is guaranteed, and the operation stability of the unit is improved.

[0044] like Figure 1As shown, the drying equipment also includes: a water receiving tray 19, located below the first condensation drying module 18 and the second condensation drying module 17, for receiving condensation drainage; a first circulating water pump 7, located on the first waterway, for controlling the water flow of the first waterway; a second circulating water pump 14, located on the second waterway, for regulating the water flow of the second waterway. The water receiving tray can receive condensation drainage to avoid the trouble caused by condensation drainage discharge. The circulating water pump can control the switch of the waterway. When the water tank and the condensation drying module need to be used for heat exchange, the circulating water pump is controlled to turn on, the waterway is conducted and the waterway circulation is accelerated, so that the heat exchange efficiency is improved, thereby improving the drying effect.

[0045] In addition, the air conditioning unit further comprises: a first domestic water module 20 connected to the first water exchange tank 3; and a second domestic water module 21 connected to the second water exchange tank 23. The domestic water module can directly provide hot water to the user, so that the air conditioning unit of the present invention integrates cooling and heating, drying, and domestic heating, has multiple functions, meets the needs of different users, reduces user costs, and effectively improves energy utilization, achieving the effect of energy saving and emission reduction.

[0046] Example 2

[0047] In a preferred embodiment 2 of the present invention, a control method for an air conditioning unit with a drying function is provided, which is applied to the air conditioning unit with a drying function in the above embodiment 1. Specifically, Figure 2 An optional flow chart of the method is shown as follows: Figure 2 As shown, the method includes the following steps S202-S204:

[0048] S202: Detecting the operation mode of the air-conditioning unit with a drying function; wherein the operation modes include at least: cooling and drying mode, cooling mode, heating and drying mode, heating mode, and drying mode;

[0049] S204: Control the operation of the heat pump unit and the drying equipment according to the operation mode.

[0050] In the above embodiment, a heat pump system with a dryer is provided, including: a heat pump unit, the heat pump system uses a first water exchange tank as a condenser, so that the condensation heat is fully absorbed by the water in the water tank, thereby further realizing the utilization of condensation heat. For this purpose, the first condensation and drying module in the drying equipment is connected with the first water exchange tank through the first water path, so that when the heat pump unit is cooling, the heat of the first water exchange tank is used to dry the drying bin, so that the heat pump system can meet the daily cooling and heating functions while using the condensation heat of the air conditioning system for drying operations and using the evaporative cooling for condensation and drainage operations, thereby realizing efficient use of energy. In addition, in order to realize the complete functions of the dryer, a second condensation and drying module is also provided in the dryer, and the first condensation and drying module and the second condensation and drying module can interchange functions, so that the heat pump system can perform condensation, drainage and drying of the drying bin regardless of whether it is in cooling mode or heating mode. Therefore, the air-conditioning unit with drying function in the present invention effectively solves the problem of insufficient utilization of condensation heat in the prior art, resulting in low energy utilization rate, and realizes efficient utilization of energy. It also fully meets the condensation drainage and drying functions of the dryer. Compared with the system with full-flow refrigerant heat exchange, the dryer uses water as the heat exchange medium, which is not only simpler in structure, more convenient to install, but also lower in cost.

[0051] The following describes the operation of the air conditioning unit in combination with different operation modes:

[0052] 1) When the operation mode is the cooling and drying mode, the operation of the heat pump unit and the drying equipment is controlled according to the operation mode, including: controlling the four-way valve 2 of the heat pump unit to enter the cooling mode, and the solenoid valve 15 of the heat pump unit is opened; obtaining the temperature of the refrigerant entering the indoor heat exchanger 13, and controlling the opening of the throttling device of the heat pump unit and the opening of the bypass electronic expansion valve 22 of the drying equipment according to the refrigerant temperature; controlling the first circulating water pump and the second circulating water pump of the drying equipment to be turned on.

[0053] Figure 3 The operation diagram of the air conditioning unit in cooling and drying mode is shown as follows: Figure 3As shown, when refrigeration and drying are running at the same time, the refrigerant enters the first heat exchange water tank 3 through the compressor 1 and the four-way valve 2 to release heat, and the water in the water tank absorbs heat and becomes hot water. A part of the hot water flows into the drying module 18 of the dryer 4 through the first circulating water pump 7 to release heat for drying operation, and the other part can be used as daily hot water through the domestic water valve 20. The warm air in the drying chamber 16 blows counterclockwise. After passing through the first heat exchange water tank 3, the refrigerant flows through the temperature sensing bag 5, and the pipe temperature at this time is detected to determine the throttling intensity of the electronic expansion valves 8, 9, 10, 11, and 22. During this period, the solenoid valve 15 is opened, and the refrigerant does not flow through the standby condenser 6. A part of the refrigerant enters the second heat exchange water tank 23 through the bypass electronic expansion valve 22 to absorb heat, and then flows into the four-way valve 2 to return to the compressor 1. The water in the second heat exchange water tank 23 releases heat and becomes cold water. The cold water is guided to the condensation drainage module in the dryer 4 through the second circulating water pump 14 to absorb heat for condensation and drainage, and then returns to the second heat exchange water tank 23 for heat release circulation. Another part of the refrigerant enters the indoor side 12, and enters the indoor heat exchanger 13 to absorb heat and cool after being throttled by the electronic expansion valves 8, 9, 10, and 11. After completing the work, it directly flows into the four-way valve 2 and returns to the compressor 1.

[0054] At this time, the first heat exchange tank 3 acts as a condenser to obtain hot water, the dryer is running, the drying module 18 releases condensation heat to the clothes, thereby drying the clothes, and the condensation module 17 releases cold energy, condenses the evaporated water vapor into water, and discharges it through the water receiving tray 19. The indoor side 12 performs cooling operation, and the opening of the electronic expansion valve can be adjusted as needed to control the outlet air temperature.

[0055] 2) When the operation mode is the cooling mode, the operation of the heat pump unit and the drying equipment is controlled according to the operation mode, including: controlling the four-way valve 2 of the heat pump unit to enter the cooling mode, the solenoid valve 15 of the heat pump unit is opened, and when the first domestic water module does not need to use hot water, the solenoid valve 15 is controlled to be closed, and the standby heat exchanger and the first water exchange tank 3 are used to exchange heat; the refrigerant temperature entering the indoor heat exchanger 13 is obtained, and the opening of the throttling device of the heat pump unit is controlled according to the refrigerant temperature; the first circulating water pump, the second circulating water pump and the bypass electronic expansion valve 22 of the drying equipment are controlled to be closed.

[0056] Figure 4 The operation diagram of the air conditioning unit in cooling mode is shown as follows: Figure 4As shown, when only cooling is performed, the process is the same as the cooling and drying mode, but the first circulating water pump 7 is turned off, and the water in the first water exchange tank 3 is only used for heat exchange and domestic water. At this time, the bypass electronic expansion valve 22 is closed, and the refrigerant no longer flows through the second water exchange tank 23. The second circulating water pump 14 is turned off, and the water in the second water exchange tank 23 no longer flows through the dryer 4. When only cooling is performed and hot water is not used for a long time, the solenoid valve 15 is disconnected, and the refrigerant after heat exchange in the first water exchange tank 3 enters the standby heat exchanger 6 for heat exchange again. At this time, a small amount of condensation heat will be released, but the refrigeration effect of the unit is guaranteed.

[0057] At this time, the first heat exchanger tank 3 acts as a condenser to obtain hot water, and the dryer does not operate. The condensation heat is consumed by the first heat exchanger tank 3 to produce domestic hot water. If hot water is not used for a long time, the standby heat exchanger 6 needs to be connected to help with heat exchange. At this time, a small amount of condensation heat is generated and is not consumed by the system. The indoor side 12 performs cooling operation, and the opening of the electronic expansion valve can be adjusted as needed to control the air outlet temperature.

[0058] 3) When the operation mode is the heating and drying mode, the operation of the heat pump unit and the drying equipment is controlled according to the operation mode, including: controlling the four-way valve 2 of the heat pump unit to enter the heating mode, closing the solenoid valve 15 of the heat pump unit, and using the standby heat exchanger and the first water exchange tank 3 to exchange heat together; obtaining the temperature of the refrigerant entering the indoor heat exchanger 13, and controlling the opening of the throttling device of the heat pump unit and the opening of the bypass electronic expansion valve 22 of the drying equipment according to the refrigerant temperature; controlling the first circulating water pump and the second circulating water pump of the drying equipment to start.

[0059] Figure 5 The operation diagram of the air conditioning unit in heating and drying mode is shown as follows: Figure 5As shown, when heating and drying are running at the same time, the refrigerant flows through the compressor 1 and the four-way valve 2, and the bypass electronic expansion valve 22 is opened for throttling, and a part of the refrigerant flows through the second water exchange tank 23 to release heat, and then flows out after throttling through the bypass electronic expansion valve 22. The water in the second water exchange tank 23 absorbs heat, wherein the hot water can not only be guided to the drying module 17 of the dryer 4 through the second circulating water pump 14 for heat release and drying operation, and then flow back to the second water exchange tank 23 for heat absorption circulation, but also can be used through the domestic water valve 21. The warm air in the drying chamber 16 blows clockwise. Another part of the refrigerant directly flows into the indoor heat exchanger 13 to release heat, and then flows out of the indoor side after throttling through the electronic expansion valves 8, 9, 10, and 11. After the refrigerants merge, the pipe temperature is detected when they pass through the temperature sensing bag 5, and the throttling intensity of the subsequent electronic expansion valves 8, 9, 10, 11, and 22 can be further controlled. At this time, the solenoid valve 15 is closed, the refrigerant exchanges heat through the standby heat exchanger 6, and then enters the first heat exchange water tank 3 to absorb heat, so that the water temperature is reduced and the superheat of the refrigerant is increased, and then flows into the four-way valve 2 to return to the compressor 1. The cold water in the first heat exchange water tank 3 is guided by the first circulating water pump 7 and enters the condensation and drainage module 18 in the dryer 4 to absorb heat, condense and drain. After the work is completed, the water returns to the first heat exchange water tank 3 to release heat and circulate.

[0060] At this time, the second water exchange tank 23 acts as a condenser to obtain hot water, the dryer is running, the drying module 17 releases condensation heat to the clothes, thereby drying the clothes, and the condensation module 18 releases cold energy, condenses the evaporated water vapor into water, and discharges it through the water receiving tray 19. The indoor side 12 performs heating operation, and the outlet air temperature can be adjusted according to the opening of the electronic expansion valve.

[0061] 4) When the operation mode is the heating mode, the operation of the heat pump unit and the drying equipment is controlled according to the operation mode, including: controlling the four-way valve 2 of the heat pump unit to enter the heating mode, closing the solenoid valve 15 of the heat pump unit, and using the standby heat exchanger and the first water exchange tank 3 to perform heat exchange; obtaining the temperature of the refrigerant entering the indoor heat exchanger 13, and controlling the opening of the throttling device of the heat pump unit according to the refrigerant temperature; controlling the first circulating water pump, the second circulating water pump and the bypass electronic expansion valve 22 of the drying equipment to close.

[0062] Figure 6 The operation diagram of the air conditioning unit in heating mode is shown as follows: Figure 6 As shown, when only heating is in operation, the process is the same as the heating and drying mode, but the bypass electronic expansion valve 22 is closed, the second circulating water pump 14 is closed, and the water in the second heat exchange tank 23 does not flow through the dryer 4. The high-temperature and high-pressure refrigerant does not pass through the second heat exchange tank 23, but directly enters the indoor side to release heat. The first circulating water pump 7 is closed, and the water in the first heat exchange tank 3 does not flow through the dryer 4.

[0063] At this time, the second heat exchanger tank 23 acts as a condenser to obtain hot water, and the dryer does not operate. The condensation heat is consumed by the water tank 24 to produce domestic hot water and is used for indoor heating. The outlet air temperature can be adjusted according to the opening of the electronic expansion valve. At this time, the standby heat exchanger 6 and the first heat exchanger tank 3 act as evaporators.

[0064] 5) When the operation mode is the drying mode, the operation of the heat pump unit and the drying equipment is controlled according to the operation mode, including: controlling the four-way valve 2 of the heat pump unit to enter the cooling mode, the solenoid valve 15 of the heat pump unit to open, and the throttling device of the heat pump unit to close; controlling the first circulating water pump, the second circulating water pump and the bypass electronic expansion valve 22 of the drying equipment to open.

[0065] Figure 7 The operation diagram of the drying mode air conditioning unit is shown as follows: Figure 7 As shown, when only drying operation is performed, the connection direction of the four-way valve 2 is defaulted to be the same as the cooling operation mode. The refrigerant enters the first heat exchange water tank 3 through the compressor 1 and the four-way valve 2 to release heat. The water in the water tank absorbs heat and becomes hot water. A part of the hot water flows into the drying module 18 of the dryer 4 through the first circulating water pump 7 to release heat for drying operation, and the other part can be used as daily hot water through the domestic water valve 20. The warm air in the drying chamber 16 blows counterclockwise. After passing through the first heat exchange water tank 3, the refrigerant flows through the temperature sensing bag 5, and the temperature sensing bag 5 does not work at this time. During this period, the solenoid valve 15 is opened, and the refrigerant does not flow through the standby condenser 6. At this time, the bypass electronic expansion valve 22 is opened, and the refrigerant enters the second heat exchange water tank 23 to absorb heat, and then directly flows into the four-way valve 2 to return to the compressor 1. The water in the second heat exchange water tank 23 releases heat and becomes cold water. The cold water is guided to the condensation drainage module 17 in the dryer 4 through the second circulating water pump 14 to absorb heat for condensation and drainage, and then returns to the second heat exchange water tank 23 for heat release circulation.

[0066] At this time, the first water exchange tank 3 acts as a condenser to obtain hot water, the dryer is running, the drying module 18 releases condensation heat to the clothes, thereby drying the clothes, and the condensation module 17 releases cold energy, condenses the evaporated water vapor into water, and discharges it through the water receiving tray 19, and the indoor side 12 does not operate.

[0067] The present invention provides an air conditioning system equipped with a dryer, in which a drying module and a condensation drainage module with interchangeable functions are provided, so that the air conditioning system can realize efficient use of energy by utilizing the condensation heat of the air conditioning system for drying operations and utilizing the evaporative cooling capacity for condensation drainage operations while meeting the daily cooling and heating functions. Refrigerant flows in the flow path of the indoor unit of the air conditioner, and the heat pump dryer exchanges heat with the air conditioning system through a water tank, thereby achieving the purpose of drying and condensation drainage functions in the dryer. Compared with a system with full-flow refrigerant heat exchange, water is used as the medium for partial heat exchange, and the system structure is simpler, installation is more convenient, and the cost is lower.

[0068] Example 3

[0069] Based on the control method for the air-conditioning unit with a drying function provided in the above-mentioned embodiment 2, a storage medium containing computer-executable instructions is also provided in a preferred embodiment 3 of the present invention. When the computer-executable instructions are executed by a computer processor, they are used to execute the control method for the air-conditioning unit with a drying function as described above.

[0070] In the above embodiment, a heat pump system with a dryer is provided, including: a heat pump unit, the heat pump system uses a first water exchange tank as a condenser, so that the condensation heat is fully absorbed by the water in the water tank, thereby further realizing the utilization of condensation heat. For this purpose, the first condensation and drying module in the drying equipment is connected with the first water exchange tank through the first water path, so that when the heat pump unit is cooling, the heat of the first water exchange tank is used to dry the drying bin, so that the heat pump system can meet the daily cooling and heating functions while using the condensation heat of the air conditioning system for drying operations and using the evaporative cooling for condensation and drainage operations, thereby realizing efficient use of energy. In addition, in order to realize the complete functions of the dryer, a second condensation and drying module is also provided in the dryer, and the first condensation and drying module and the second condensation and drying module can interchange functions, so that the heat pump system can perform condensation, drainage and drying of the drying bin regardless of whether it is in cooling mode or heating mode. Therefore, the air-conditioning unit with drying function in the present invention effectively solves the problem of insufficient utilization of condensation heat in the prior art, resulting in low energy utilization rate, and realizes efficient utilization of energy. It also fully meets the condensation drainage and drying functions of the dryer. Compared with the system with full-flow refrigerant heat exchange, the dryer uses water as the heat exchange medium, which is not only simpler in structure, more convenient to install, but also lower in cost.

[0071] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0072] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0073] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0074] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0075] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0076] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0077] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not invented by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0078] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. An air conditioning unit with a drying function, characterized in that: include: The heat pump unit comprises: a compressor, a four-way valve, an indoor heat exchanger, and a throttling device connected in sequence; a first heat exchange water tank, wherein a refrigerant pipeline between the throttling device and the four-way valve passes through the first heat exchange water tank to exchange heat with the first heat exchange water tank; The drying equipment includes: a drying chamber, a second water exchange tank arranged in parallel with the indoor heat exchanger, a first condensing and drying module and a second condensing and drying module located in the drying chamber, wherein the first condensing and drying module is connected to the first water exchange tank through a first water path, and is used to use the heat of the first water exchange tank to dry the drying chamber when the heat pump unit is cooling, and to use the coldness of the first water exchange tank to condense and drain the drying chamber when the heat pump unit is heating; the second condensing and drying module is connected to the second water exchange tank through a second water path, and is used to use the coldness of the second water exchange tank to condense and drain the drying chamber when the heat pump unit is cooling, and to use the heat of the second water exchange tank to dry the drying chamber when the heat pump unit is heating.

2. The air conditioning unit with drying function according to claim 1, characterized in that: The drying equipment also includes: A bypass refrigerant pipe has one end connected to a first connection point on the pipeline between the four-way valve and the indoor heat exchanger, and the other end connected to a second connection point on the pipeline between the throttling device and the first water exchange tank. The bypass refrigerant pipe passes through the second water exchange tank to exchange heat with the second water exchange tank.

3. The air conditioning unit with drying function according to claim 1, characterized in that: The heat pump unit also includes: A solenoid valve located on the pipeline between the throttling device and the first water exchange tank; A spare heat exchanger is arranged in parallel with the solenoid valve; When the first water exchange tank cannot meet the outdoor heat exchange demand, the solenoid valve is closed, and the standby heat exchanger is used together with the first water exchange tank to exchange heat.

4. The air conditioning unit with drying function according to claim 2, characterized in that: The drying equipment also includes: A water receiving tray, located below the first condensation and drying module and the second condensation and drying module, for receiving condensation drainage; a first circulating water pump, located in the first waterway, and used to control the water flow in the first waterway; a second circulating water pump, located on the second waterway, for adjusting the water flow of the second waterway; The bypass electronic expansion valve is located on the bypass refrigerant pipe and is used to adjust the refrigerant flow of the bypass refrigerant pipe.

5. The air conditioning unit with drying function according to claim 1, characterized in that: Also includes: A first domestic water module connected to the first water exchange tank; The second domestic water module is connected to the second heat exchange water tank.

6. A control method for an air conditioning unit with a drying function, applied to the air conditioning unit with a drying function as claimed in any one of claims 1 to 5, characterized in that: The method comprises: Detecting the operating mode of the air-conditioning unit with drying function; wherein the operating mode at least includes: cooling and drying mode, cooling mode, heating and drying mode, heating mode, and drying mode; The operation of the heat pump unit and the drying equipment is controlled according to the operation mode.

7. The method according to claim 6, characterized in that When the operation mode is the cooling and drying mode, controlling the operation of the heat pump unit and the drying equipment according to the operation mode includes: Controlling the four-way valve of the heat pump unit to enter a cooling mode, and opening the solenoid valve of the heat pump unit; Obtaining the refrigerant temperature of the refrigerant pipeline between the indoor heat exchanger of the heat pump unit and the solenoid valve, and controlling the opening of the throttling device of the heat pump unit and the opening of the bypass electronic expansion valve of the drying equipment according to the refrigerant temperature; The first circulating water pump and the second circulating water pump of the drying equipment are controlled to start.

8. The method according to claim 6, characterized in that When the operation mode is the cooling mode, controlling the operation of the heat pump unit and the drying equipment according to the operation mode includes: The four-way valve of the heat pump unit is controlled to enter the cooling mode, the solenoid valve of the heat pump unit is opened, and when the first domestic water module does not need to use hot water, the solenoid valve is controlled to be closed, and the standby heat exchanger is used to perform heat exchange with the first water exchange tank; Acquiring the refrigerant temperature of the refrigerant pipeline between the indoor heat exchanger of the heat pump unit and the solenoid valve, and controlling the opening of the throttling device of the heat pump unit according to the refrigerant temperature; The first circulating water pump, the second circulating water pump and the bypass electronic expansion valve of the drying equipment are controlled to be closed.

9. The method according to claim 6, characterized in that When the operation mode is the heating and drying mode, controlling the operation of the heat pump unit and the drying equipment according to the operation mode includes: The four-way valve of the heat pump unit is controlled to enter a heating mode, the solenoid valve of the heat pump unit is closed, and the standby heat exchanger is used to perform heat exchange with the first heat exchange water tank; Obtaining the refrigerant temperature of the refrigerant pipeline between the indoor heat exchanger of the heat pump unit and the solenoid valve, and controlling the opening of the throttling device of the heat pump unit and the opening of the bypass electronic expansion valve of the drying equipment according to the refrigerant temperature; The first circulating water pump and the second circulating water pump of the drying equipment are controlled to start.

10. The method according to claim 6, characterized in that When the operation mode is the heating mode, controlling the operation of the heat pump unit and the drying equipment according to the operation mode includes: The four-way valve of the heat pump unit is controlled to enter a heating mode, the solenoid valve of the heat pump unit is closed, and the standby heat exchanger is used to perform heat exchange with the first heat exchange water tank; Acquiring the refrigerant temperature of the refrigerant pipeline between the indoor heat exchanger of the heat pump unit and the solenoid valve, and controlling the opening of the throttling device of the heat pump unit according to the refrigerant temperature; The first circulating water pump, the second circulating water pump and the bypass electronic expansion valve of the drying equipment are controlled to be closed.

11. The method according to claim 6, characterized in that When the operation mode is the drying mode, controlling the operation of the heat pump unit and the drying equipment according to the operation mode includes: Controlling the four-way valve of the heat pump unit to enter a cooling mode, the solenoid valve of the heat pump unit is opened, and the throttling device of the heat pump unit is closed; The first circulating water pump, the second circulating water pump and the bypass electronic expansion valve of the drying equipment are controlled to open.

12. A storage medium containing computer executable instructions, characterized in that: The computer executable instructions are used to execute the control method of the air conditioning unit with drying function as claimed in any one of claims 6 to 11 when executed by a computer processor.

Images