Clothes processing device and control method

Abstract

The present invention provides a clothing processing device and a control method. The clothing processing device includes a clothing processing drum and a heat pump device. The heat pump device includes a shell and a heat exchange component. The shell is connected between a drying inlet and a drying outlet. The heat exchange component is arranged inside the shell and includes an evaporator, an auxiliary heat exchanger and a condenser arranged in sequence. The auxiliary heat exchanger forms an A auxiliary air duct and a B auxiliary air duct. A bypass air duct is formed between the heat exchange component and the shell wall of the shell. The evaporator air duct, the A auxiliary air duct and the condenser air duct are connected in sequence to form a main drying air duct. The bypass air duct, the B auxiliary air duct and the condenser air duct are connected in sequence to form an auxiliary drying air duct. When the bypass air duct is in a closed state, the drying air flow only flows through the main drying air duct. When the bypass air duct is in an open state, a part of the drying air flow flows through the main drying air duct, and the other part of the drying air flow flows through the auxiliary drying air duct, and the two parts of the drying air flow can exchange heat in the auxiliary heat exchanger.

Description

Technical Field

[0001] The present invention belongs to the technical field of clothing processing, and in particular relates to a clothing processing device and a control method. Background Art

[0002] In the prior art, most dryers are heat pump dryers to enhance the recycling of heat. The main problem with current dryers is that the drying process takes a long time. In order to shorten the drying time, some people have proposed improved dryers, but the improved dryers require additional cooling or heat dissipation devices, the whole machine has a complex structure, a long drying time, high energy consumption, and difficulty in system control. Summary of the invention

[0003] In view of this, the present invention provides a clothing processing device and a control method to solve the problems of complex structure of the heat exchange device of the heat pump dryer in the prior art, long drying time and high energy consumption.

[0004] The present invention provides a clothes processing device, the clothes processing device comprises a clothes processing drum and a heat pump device, the clothes processing drum is formed with a drying inlet and a drying outlet; the heat pump device comprises a shell and a heat exchange component, the shell is connected between the drying inlet and the drying outlet, the heat exchange component is arranged inside the shell, and a bypass air duct is formed between the heat exchange component and the shell wall of the shell; the heat exchange component comprises an evaporator, an auxiliary heat exchanger and a condenser which are arranged in sequence along the flow direction of the drying airflow; the evaporator is formed with an evaporator air duct, and the drying airflow flowing through the evaporator air duct has a heat exchange relationship with the refrigerant in the evaporator; the condenser is formed with a condenser air duct, and the drying airflow flowing through the condensation air duct has a heat exchange relationship with the refrigerant in the condenser; the auxiliary heat exchanger is formed with an A auxiliary air duct and a B auxiliary air duct, and the A auxiliary air duct and the B auxiliary air duct have a heat exchange relationship;

[0005] The evaporator air duct, the A auxiliary air duct and the condenser air duct are connected in sequence to form a main drying air duct, and the bypass air duct, the B auxiliary air duct and the condenser air duct are connected in sequence to form an auxiliary drying air duct;

[0006] The bypass air duct can be controlled to be opened or closed or the flow area can be adjusted to adjust the flow rate of the main drying air duct and the auxiliary drying air duct.

[0007] Further optionally, a movable wind shield is provided at the air inlet end or inside of the bypass air duct, and the wind shield can be controlled to open or close the bypass air duct, or the wind shield can be controlled to adjust the flow area of ​​the bypass air duct.

[0008] Further optionally, the clothes processing device further comprises a control module, and the control module can open or close the bypass air duct, or adjust the flow area of ​​the bypass air duct according to the current water evaporation amount of the clothes in the clothes processing drum.

[0009] The present invention also provides a control method for a clothes processing device, wherein the clothes processing device is any one of the clothes processing devices described above; the clothes processing device is provided with a drying mode, and when the clothes processing device runs the drying mode, the control method comprises:

[0010] Determine the current amount of water evaporation of the clothes in the clothes treatment drum per unit time;

[0011] The bypass air duct is controlled to be opened or closed, or the flow area of ​​the bypass air duct is adjusted according to the current water evaporation amount.

[0012] Further optionally, controlling the bypass air duct to be opened or closed according to the current water evaporation amount includes:

[0013] Comparing the current evaporation amount of water with the dehumidification amount of the evaporator per unit time;

[0014] When the current evaporation amount of water is less than or equal to the dehumidification amount of the evaporator, the air inlet end or the internal wind shield of the bypass air duct is controlled to move so that the bypass air duct is closed;

[0015] When the current evaporation amount of water is greater than the dehumidification amount of the evaporator, the wind shield is controlled to move so that the bypass air duct is opened.

[0016] Further optionally, when the bypass air duct is in an open state, adjusting the flow area of ​​the bypass air duct according to the current water evaporation amount includes:

[0017] Subtract the dehumidification capacity of the evaporator from the current water evaporation capacity to obtain a difference;

[0018] The movement of the wind shield is controlled according to the difference, and the flow area of ​​the bypass air duct is adjusted so that the sum of the dehumidification capacity of the evaporator and the dehumidification capacity of the auxiliary heat exchanger is greater than or equal to the current water evaporation capacity.

[0019] Further optionally, the determining the current amount of water evaporation of the clothes in the clothes processing drum per unit time comprises:

[0020] Calculate the current water content q1 of the drying airflow at the drying inlet and the water content q2 of the drying airflow at the drying outlet per unit time;

[0021] The current water evaporation amount Δq=q2-q1 is determined.

[0022] Further optionally, the calculating the current water content q1 in the drying airflow at the drying inlet and the water content q2 in the drying airflow at the drying outlet within a unit time comprises:

[0023] Calculate the flow rate Q1 and average moisture content a1 of the drying airflow at the drying inlet and the flow rate Q2 and average moisture content a2 of the drying airflow at the drying outlet per unit time;

[0024] It is determined that q1=Q1*a1 and q2=Q2*a2.

[0025] Further optionally, the control method further includes:

[0026] Acquiring the current temperature of the drying airflow in the laundry processing drum;

[0027] comparing the current temperature with a preset temperature;

[0028] According to the comparison result between the current temperature and the preset temperature, controlling the bypass air duct to be opened or closed;

[0029] Among them, the current temperature is related to the current water evaporation amount. When the current temperature is less than or equal to the preset temperature, the current water evaporation amount gradually increases with the increase of the current temperature; when the current temperature approaches the preset temperature, the current water evaporation amount gradually decreases with the increase of the current temperature due to the influence of the clothing material.

[0030] Further optionally, the drying mode includes a standard drying mode, the preset temperature includes a first preset temperature; and the controlling the bypass air duct to be opened or closed according to a comparison result between the current temperature and the preset temperature includes:

[0031] determining a current drying mode of the laundry processing device;

[0032] When the current drying mode is the standard drying mode, comparing the current temperature with the first preset temperature;

[0033] When the current temperature is lower than the first preset temperature, controlling the air inlet end or the internal wind shield of the bypass air duct to move so that the bypass air duct is opened;

[0034] When the current temperature is equal to or greater than the first preset temperature, the wind shielding member is controlled to move so that the bypass air duct is closed.

[0035] Further optionally, the drying mode further includes a quick drying mode, and the preset temperature further includes a second preset temperature; and the controlling the bypass air duct to be opened or closed according to the comparison result between the current temperature and the preset temperature further includes:

[0036] When the current drying mode is a quick drying mode, comparing the current temperature with a second preset temperature;

[0037] When the current temperature is lower than the second preset temperature, controlling the wind shield to move so that the bypass air duct is opened;

[0038] When the current temperature is equal to or greater than the second preset temperature, controlling the wind shield to move so that the bypass air duct is closed;

[0039] Wherein, the second preset temperature is lower than the first preset temperature.

[0040] Compared with the prior art, the beneficial effects of the present invention are mainly:

[0041] The evaporator, auxiliary heat exchanger and condenser are arranged in sequence; the evaporator forms an evaporator air duct, and the condenser forms a condenser air duct; the auxiliary heat exchanger forms an A auxiliary air duct and a B auxiliary air duct with a heat exchange relationship; a bypass air duct is formed between the heat exchange component and the shell wall of the shell, and the wind shield can be controlled to open or close the bypass air duct; the evaporator air duct, A auxiliary air duct and condenser air duct are connected in sequence to form a main drying air duct, and the bypass air duct, B auxiliary air duct and condenser air duct are connected in sequence to form an auxiliary drying air duct; when the bypass air duct is in a closed state, the drying air flow only flows through the main The drying air duct dehumidifies the drying air flow through the evaporator; when the bypass air duct is in an open state, a part of the drying air flow flows through the main drying air duct and is dehumidified by the evaporator; the other part of the drying air flow flows through the auxiliary drying air duct. When the two parts of the drying air flow flow through the auxiliary heat exchanger, the drying air flow flowing through the main drying air duct can dehumidify the drying air flow flowing through the auxiliary drying air duct, thereby improving the dehumidification effect; the heat pump device has a simple structure and low energy consumption. The flow area of ​​the bypass air duct can be adjusted according to actual needs, with high control accuracy, obvious dehumidification effect and low drying energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0043] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0044] Figure 1 A schematic diagram of the axial structure of an embodiment of a heat pump device provided by the present invention;

[0045] Figure 2a and Figure 2b A schematic cross-sectional view of an embodiment of a heat pump device provided by the present invention;

[0046] Figure 3 A schematic diagram of the axial structure of a heat exchange assembly embodiment provided by the present invention;

[0047] Figure 4 A schematic cross-sectional view of an embodiment of a heat exchange assembly provided by the present invention;

[0048] Figure 5 A schematic flow chart of an embodiment of a control method for a clothes processing device provided by the present invention;

[0049] In the figure:

[0050] 1-evaporator; 2-auxiliary heat exchanger; 21-auxiliary heat exchange tube; 22-B auxiliary air duct; 3-condenser; 4-compressor; 5-throttling device; 6-filter; 7-shell; 71-shell body; 72-shell cover; 73-bypass air duct; 731-first bypass air duct section; 732-second bypass air duct section; 741-air inlet area; 742-heat exchange area; 743-air outlet area. DETAILED DESCRIPTION

[0051] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of 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.

[0052] 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, but does not exclude the inclusion of at least one.

[0053] 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.

[0054] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0055] In the existing improved heat pump dryer, additional cooling or heat dissipation devices are required, the whole machine structure is complex, the drying time is long, the energy consumption is high and the system control is difficult;

[0056] The present invention creatively provides a clothing processing device, including a clothing processing drum and a heat pump device, the heat pump device including a shell and a heat exchange component, the shell is connected between the drying inlet and the drying outlet of the clothing processing drum; the heat exchange component is arranged inside the shell and a bypass air duct is formed between the heat exchange component and the shell wall of the shell, the heat exchange component includes an evaporator, an auxiliary heat exchanger and a condenser arranged in sequence; the evaporator forms an evaporator air duct, and the condenser forms a condenser air duct; the auxiliary heat exchanger forms an A auxiliary air duct and a B auxiliary air duct having a heat exchange relationship; the evaporator air duct, the A auxiliary air duct and the condenser air duct are connected in sequence to form a main drying air duct, and the bypass air duct, the B auxiliary air duct and the auxiliary air duct are connected in sequence to form a main drying air duct. The air duct and the condenser air duct are connected in sequence to form an auxiliary drying air duct; when the bypass air duct is in a closed state, the drying air flow only flows through the main drying air duct, and the drying air flow is dehumidified by the evaporator; when the bypass air duct is in an open state, a part of the drying air flow flows through the main drying air duct, and the part of the drying air flow is dehumidified by the evaporator; the other part of the drying air flow flows through the auxiliary drying air duct, and when the two parts of the drying air flow flow through the auxiliary heat exchanger, the drying air flow flowing through the auxiliary air duct A can re-dehumidify the drying air flow flowing through the auxiliary air duct B, thereby improving the dehumidification effect; the flow area of ​​the bypass air duct can be adjusted according to actual needs, with high control accuracy, obvious dehumidification effect and low drying energy consumption.

[0057] <Clothes processing equipment>

[0058] like Figures 1 to 4 As shown, this embodiment provides a clothing processing device, including a clothing processing drum and a heat pump device, the clothing processing drum is formed with a drying inlet and a drying outlet; the heat pump device includes a shell 7 and a heat exchange component, the shell 7 is connected between the drying inlet and the drying outlet; the interior of the shell 7 is formed with an air inlet area 741, a heat exchange area 742 and an air outlet area 743 arranged in sequence, and the heat exchange component is arranged in the heat exchange area 742; the heat exchange component includes a compressor 4, a throttling device 5, and an evaporator 1, an auxiliary heat exchanger 2 and a condenser 3 arranged in sequence along the flow direction of the drying airflow; the evaporator 1 is formed with an evaporator refrigerant channel and an evaporator refrigerant channel having a heat exchange relationship The air duct, the air inlet end of the evaporator air duct is connected with the air inlet area 741, the evaporator refrigerant channel can flow through the refrigerant, and the air in the air inlet area 741 can enter the evaporator air duct; the condenser 3 is formed with a condenser refrigerant channel and a condenser air duct having a heat exchange relationship, the air outlet end of the condenser air duct is connected with the air outlet area 743, the condenser refrigerant channel can flow through the refrigerant, and the air in the condenser air duct can enter the air outlet area 743; the evaporator refrigerant channel, the condenser refrigerant channel, the compressor 4 and the throttling device 5 are connected through the refrigerant pipe to form a refrigerant circuit; the auxiliary heat exchanger 2 forms an A auxiliary air duct and a B auxiliary air duct 22 having a heat exchange relationship;

[0059] The evaporator air duct, the A auxiliary air duct and the condenser air duct are connected in sequence to form a main drying air duct; the heat exchange assembly and the shell 7 are located between the shell wall of the heat exchange area 742 to form a bypass air duct 73, and the bypass air duct 73, the B auxiliary air duct 22 and the condenser air duct are connected in sequence to form an auxiliary drying air duct; both the main drying air duct and the auxiliary drying air duct can flow through the drying air flow; the bypass air duct 73 can be controlled to open or close or adjust the flow area to adjust the flow of the main drying air duct and the auxiliary drying air duct;

[0060] Specifically, the air inlet end of the bypass air duct 73 is connected to the air inlet area 741, and the air outlet end of the bypass air duct 73 is connected to the air inlet end of the B auxiliary air duct 22; a part of the drying air flow in the air inlet area 741 can flow through the main drying air duct, and the other part of the drying air flow can flow through the auxiliary drying air duct; when the two parts of the drying air flow flow through the auxiliary heat exchanger 2, the drying air flow flowing through the A auxiliary air duct can re-dehumidify the drying air flow flowing through the B auxiliary air duct 22, thereby improving the dehumidification effect; realizing the conversion of sensible heat of the heat pump device into latent heat, thereby improving the dehumidification capacity of the heat pump device; the evaporator 1 can reduce more air to below the dew point temperature, thereby improving the dehumidification efficiency of the evaporator 1;

[0061] Furthermore, a movable wind shield is provided at the air inlet end or inside of the bypass air duct 73, and the wind shield can be controlled to open or close the bypass air duct 73, or the wind shield can be controlled to adjust the flow area of ​​the bypass air duct 73;

[0062] The auxiliary heat exchanger 2 includes a bracket and a plurality of auxiliary heat exchange tubes 21, wherein the plurality of auxiliary heat exchange tubes 21 are arranged on the bracket at intervals and in parallel along the length direction of the bracket, and the auxiliary heat exchange tubes 21 extend along the height direction of the bracket, or the extension direction of the auxiliary heat exchange tubes 21 is arranged obliquely relative to the height direction of the bracket; the auxiliary heat exchange tubes 21 form a B auxiliary air duct 22, and an A auxiliary air duct is formed between two adjacent auxiliary heat exchange tubes 21; the air in the A auxiliary air duct and the air in the B auxiliary air duct 22 are heat-exchanged to dehumidify the air in the B auxiliary air duct 22; the water vapor in the B auxiliary air duct 22 is condensed into water droplets and flows downward along the auxiliary heat exchange tubes 21;

[0063] The shell 7 includes a shell body 71 and a shell cover 72. The top of the shell body 71 is formed with an opening, and the shell cover 72 is arranged to cover the opening. The heat exchange assembly also includes a heat exchange shell, which is arranged inside the shell 7. A bypass air duct 73 is formed between the top of the heat exchange shell and the shell cover 72. The evaporator 1, the auxiliary heat exchanger 2 and the condenser 3 are arranged in sequence inside the heat exchange shell.

[0064] The wind shield is rotatably arranged at the air inlet end of the bypass air duct 73, the wind shield is connected to a connecting rod in a driving manner, and the connecting rod is connected to a driving motor in a driving manner. When the driving motor rotates, the connecting rod can rotate with the wind shield, and then the wind shield can open or close the bypass air duct 73; when the bypass air duct 73 is in a closed state, under the action of the fan, all the drying airflow passes through the main drying air duct; when the bypass air duct 73 is in an open state, under the action of the fan, a part of the drying airflow flows through the main drying air duct, and a part of the drying airflow flows through the auxiliary drying air duct; the sensible heat of the heat pump device is converted into latent heat, which is condensed in the B auxiliary air duct 22, thereby increasing the dehumidification capacity of the heat pump device; therefore, the evaporator 1 can reduce more humid hot air to below the dew point temperature, thereby improving the dehumidification efficiency of the evaporator 1; preferably, the wind shield is a wind shield.

[0065] A bypass air duct 73 is formed between the top of the heat exchange shell near the evaporator 1 and the auxiliary heat exchanger 2 and the shell cover, and the top of the heat exchange shell near the condenser 3 is sealed and fitted with the shell cover 72; specifically, a first bypass air duct section 731 is formed between the top wall of the evaporator 1 and the shell cover 72, and the air inlet end of the first bypass air duct section 731 is connected to the air inlet area 741; a second bypass air duct section 732 is formed between the top wall of the auxiliary heat exchanger 2 and the shell cover 72, and the air outlet end of the second bypass air duct section 732 is connected to the air inlet end of the B auxiliary air duct 22; the first bypass air duct The air outlet end of the duct section 731 and the air inlet end of the second bypass duct section 732 are connected to form a bypass duct 73; another part of the air in the air inlet area 741 can flow through the first bypass duct section 731, the second bypass duct section 732 and the B auxiliary duct 22 in sequence to enter the condensation duct, and then enter the air outlet area 743; the top wall of the evaporator 1 is higher than the top wall of the auxiliary heat exchanger 2, and the top wall of the condenser 3 is higher than the top wall of the auxiliary heat exchanger 2; the distance between the top wall of the evaporator 1 and the shell cover 72 is smaller than the distance between the top wall of the auxiliary heat exchanger 2 and the shell cover 72;

[0066] The evaporator 1 is generally composed of a copper tube and an aluminum fin. The copper tube is tightly connected to the fin after expansion. The inside of the tube is a refrigerant channel, and an evaporator air duct is formed between the copper tubes of two adjacent evaporators 1; the auxiliary heat exchanger 2 is composed of a copper tube and an aluminum fin. The inside of the tube is a hot and humid air channel, and an auxiliary air duct A is formed between the copper tubes of two adjacent auxiliary heat exchangers 2; the condenser 3 is generally composed of a copper tube and an aluminum fin. The copper tube is tightly connected to the fin after expansion. The inside of the tube is a refrigerant channel, and a condenser air duct is formed between the copper tubes of two adjacent condensers 3.

[0067] The present embodiment further proposes that the clothing processing device further comprises a control module, which can open or close the bypass air duct 73 or adjust the flow area of ​​the bypass air duct 73 according to the current evaporation amount of the clothing in the clothing processing drum.

[0068] Furthermore, an air guide shell is provided at the air inlet end of the B auxiliary air duct 22, and the air guide shell is used to guide the drying airflow in the bypass air duct 73 to the B auxiliary air duct 22;

[0069] The interior of the auxiliary air duct B 22 is provided with an enhanced heat exchange structure, which is used to change the flow rate of the drying airflow flowing through the auxiliary air duct B 22, increase the flow of the drying airflow in the auxiliary heat exchange tube 21, and make the drying airflow generate a rotating flow or a secondary flow, thereby changing the flow state;

[0070] Specifically, the enhanced heat exchange structure includes a first rib, which extends from the air inlet end of the B auxiliary air duct 22 to the air outlet end of the B auxiliary air duct 22; a plurality of first ribs are provided, and the plurality of first ribs are arranged at intervals;

[0071] In other embodiments, the enhanced heat exchange structure includes a second rib 82, and the second rib 82 is a spiral structure; the second rib 82 may be provided with one or more second ribs 82. When a plurality of second ribs 82 are provided, the plurality of second ribs 82 are spaced apart and connected together along the circumference thereof, and the plurality of second ribs 82 form a hollow structure.

[0072] In addition, the heat pump device also includes a fan and a filter 6. The drying inlet, the shell 7, the fan and the drying outlet are connected in sequence. The fan is used to provide power to the drying airflow. Under the action of the fan, the drying airflow circulates between the clothing treatment drum and the inside of the shell 7. The drying airflow enters the clothing treatment drum and exchanges heat with the clothing. When the drying airflow enters the evaporator 1, the evaporator 1 dehumidifies the drying airflow. When entering the condenser 3, the condenser 3 heats the drying airflow. The filter 6 is arranged inside the shell 7 and close to the drying inlet, and is used to filter hair debris in the drying airflow.

[0073] The number of rows of the auxiliary heat exchanger 2 of this embodiment can be single row, multiple rows, etc., and the number of rows of the evaporator 1 and the condenser 3 can also be single row, multiple rows, etc.; the fin structure of the auxiliary heat exchanger 2 can be flat fins, corrugated fins, window fins, etc., but is not limited to a certain type, and its tube diameter and fin number are not limited to a certain type.

[0074] The heat pump device of this embodiment is applicable to heat pump dryers, dehumidifiers and other drying equipment. The structural arrangement of the heat pump device is not limited to one type and can be located at any position of the drying equipment.

[0075] <Control method>

[0076] like Figure 5 As shown, this embodiment provides a control method for a clothes processing device, the clothes processing device is any of the clothes processing devices described above; the clothes processing device is provided with a drying mode, and when the clothes processing device runs the drying mode, the control method includes:

[0077] S1, determining the current evaporation amount of the clothes in the clothes treatment drum per unit time;

[0078] S2. Control the bypass air duct 73 to open or close, or adjust the flow area of ​​the bypass air duct 73 according to the current water evaporation amount.

[0079] Further, S2 includes:

[0080] Compare the current evaporation amount of water with the dehumidification amount of evaporator 1 per unit time;

[0081] When the current evaporation amount of water is less than or equal to the dehumidification amount of the evaporator 1, the wind shield is controlled to move so that the bypass air duct 73 is closed;

[0082] When the current evaporation amount of water is greater than the dehumidification amount of the evaporator 1, the wind shield is controlled to move so that the bypass air duct 73 is opened.

[0083] When the bypass air passage 73 is in the open state, S2 further includes:

[0084] Subtract the dehumidification capacity of evaporator 1 from the current evaporation capacity to obtain the difference;

[0085] The movement of the wind shield is controlled according to the difference, and the flow area of ​​the bypass air duct 73 is adjusted so that the sum of the dehumidification amount of the evaporator 1 and the dehumidification amount of the auxiliary heat exchanger 2 is greater than or equal to the current water evaporation amount.

[0086] S1 includes:

[0087] S11, calculating the current water content q1 in the drying airflow at the drying inlet and the water content q2 in the drying airflow at the drying outlet per unit time;

[0088] S12, determine the current water evaporation amount Δq=q2-q1.

[0089] Furthermore, S11 includes:

[0090] Calculate the flow rate Q1 and average moisture content a1 of the drying airflow at the drying inlet and the flow rate Q2 and average moisture content a2 of the drying airflow at the drying outlet per unit time;

[0091] Determine q1=Q1*a1 and q2=Q2*a2.

[0092] According to the basic rules of drying clothes in the clothes treatment drum and experimental tests, the operation process of the heat pump clothes treatment equipment can be roughly divided into three stages: ① the preheating and heating stage of the clothes and the clothes treatment drum, that is, the start-up stage of the entire drying process, so that the temperature inside the clothes treatment drum reaches the preset wind temperature, which does not damage the clothes and can dry the clothes quickly; ② the constant drying stage, at this time, the drying airflow at the drying outlet is basically saturated, and the temperature of the clothes is basically kept constant. At this stage, the clothes and the free water inside the clothes treatment drum are vaporized, and the evaporation of water in the clothes treatment drum is relatively large, and the dehumidification capacity of the heat pump device is limited. It is impossible to condense all the water brought out of the air in the clothes treatment drum, which will also cause the moisture content of the return air of the clothes treatment drum to accumulate continuously; ③ the dehumidification drying stage, at this time, the relative humidity of the drying airflow at the drying outlet is constantly decreasing, the bound water inside the clothes is difficult to vaporize and escape, the evaporation of water in the clothes treatment drum is relatively small, the dehumidification capacity of the heat pump device is surplus, and the temperature of the clothes will continue to rise until the drying process ends; in the actual drying process, the drying condition is a dynamic process, and the drying rate and the temperature of the drying airflow are constantly changing with time. Under different drying modes, different loads, different ambient temperatures and other conditions, the rising speed of the drying airflow is also different, and the drying airflow temperature affects the drying rate.

[0093] Therefore, increasing the dehumidification capacity of the heat pump device is beneficial to the overall drying rate in the early and middle stages of drying, and strengthening the dehumidification of the heat pump device can shorten the drying time. The design of the auxiliary heat exchanger 2 is to perform internal heat exchange by bypass flow, and finally convert part of the sensible heat into latent heat to increase the overall condensation capacity (i.e., reduce the sensible heat ratio and increase the latent heat ratio), but the condensation dehumidification effect is also closely related to the air temperature, humidity and flow rate.

[0094] The effect of different drying airflow temperatures on the condensation amount under a certain relative humidity condition of the auxiliary heat exchanger 2 scheme was tested experimentally. The experimental results show that as the temperature of the drying airflow increases, the condensation amount increase ratio obtained by the test shows a continuous downward trend, and failure may occur under higher temperature conditions. Corresponding to the operation process of the actual clothing processing equipment, the temperature of the drying airflow is also in a trend of first rising and then tending to stabilize. Therefore, it can be concluded that the dehumidification effectiveness of the heat pump device of this embodiment has a certain range. Beyond a certain range, the gain brought by the heat pump device is relatively small. On the other hand, the auxiliary heat exchanger 2 will also increase the resistance of the heat pump device; in order to achieve the maximum dehumidification effectiveness of the heat pump device of this embodiment, staged control is required. From the above analysis, it can be concluded that the heat pump device proposed in this embodiment has more obvious advantages under low temperature conditions. The temperature in the early stage of the corresponding drying process is relatively low, and the heat pump device can enhance dehumidification, and may fail in the later stage of drying.

[0095] This embodiment proposes a control method for a clothes processing device. Controlling the opening and closing of the bypass air duct in stages can effectively exert the dehumidification capacity of the auxiliary heat exchanger 2 of this embodiment, improve the drying rate of the whole machine, and shorten the drying time.

[0096] In addition, the control methods include:

[0097] S3, obtaining the current temperature of the drying airflow in the clothes processing drum;

[0098] S4, comparing the current temperature with the preset temperature;

[0099] S5, according to the comparison result between the current temperature and the preset temperature, control the bypass air duct 73 to be opened or closed;

[0100] Among them, the current temperature is related to the current water evaporation amount. When the current temperature is less than or equal to the preset temperature, the current water evaporation amount gradually increases with the increase of the current temperature; when the current temperature is greater than the preset temperature, as the current temperature increases, the current water evaporation amount gradually decreases due to the influence of the clothing material.

[0101] Further, the drying mode includes a standard drying mode and a quick drying mode, and the preset temperature includes a first preset temperature and a second preset temperature; S5 includes:

[0102] S51, determining a current drying mode of the clothes processing device;

[0103] S521, when the current drying mode is the standard drying mode, comparing the current temperature with the first preset temperature;

[0104] S522, when the current temperature is lower than the first preset temperature, controlling the wind shield to move so that the bypass air duct 73 is opened;

[0105] S523. When the current temperature is equal to or slightly greater than the first preset temperature, the wind shield is controlled to move so that the bypass air duct 73 is closed.

[0106] S531, when the current drying mode is the quick drying mode, comparing the current temperature with a second preset temperature;

[0107] S532, when the current temperature is lower than the second preset temperature, controlling the wind shield to move so that the bypass air duct 73 is opened;

[0108] S533, when the current temperature is equal to or slightly greater than the second preset temperature, controlling the wind shield to move so that the bypass air duct 73 is closed;

[0109] The second preset temperature is lower than the first preset temperature.

[0110] The exemplary embodiments of the present disclosure are specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structures, configurations or implementations described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent configurations included in the spirit and scope of the appended claims.

Claims

1. A clothes processing device, comprising a clothes processing drum, a heat pump device and a control module, wherein the clothes processing drum is formed with a drying inlet and a drying outlet; the heat pump device comprises a shell and a heat exchange component, wherein the shell is connected between the drying inlet and the drying outlet, and the heat exchange component is arranged inside the shell; characterized in that: A bypass air duct is formed between the heat exchange component and the shell wall of the shell; the heat exchange component includes an evaporator, an auxiliary heat exchanger and a condenser arranged in sequence; the evaporator is formed with an evaporator air duct through which a drying airflow can flow, and the condenser is formed with a condenser air duct through which a drying airflow can flow; the auxiliary heat exchanger is formed with an A auxiliary air duct and a B auxiliary air duct having a heat exchange relationship; The evaporator air duct, the A auxiliary air duct and the condenser air duct are connected in sequence to form a main drying air duct, and the bypass air duct, the B auxiliary air duct and the condenser air duct are connected in sequence to form an auxiliary drying air duct; The bypass air duct can be controlled to be opened or closed or the flow area can be adjusted to adjust the flow of the main drying air duct and the auxiliary drying air duct; The control module may open or close the bypass air duct, or adjust a flow area of ​​the bypass air duct according to a current amount of water evaporation of the clothes in the clothes processing tub.

2. The clothes processing device according to claim 1, characterized in that: A movable wind shield is provided at the air inlet end or inside of the bypass air duct, and the wind shield can be controlled to open or close the bypass air duct, or the wind shield can be controlled to adjust the flow area of ​​the bypass air duct.

3. A control method for a clothes processing device, characterized in that: The clothes processing device is the clothes processing device according to any one of claims 1 to 2; the clothes processing device is provided with a drying mode, and when the clothes processing device runs the drying mode, the control method comprises: Determine the current amount of water evaporation of the clothes in the clothes treatment drum per unit time; The bypass air duct is controlled to be opened or closed according to the current water evaporation amount, or the flow area of ​​the bypass air duct is adjusted according to the current water evaporation amount.

4. The control method of the clothes processing device according to claim 3, characterized in that: The controlling the opening or closing of the bypass air duct according to the current water evaporation amount comprises: Comparing the current evaporation amount of water with the dehumidification amount of the evaporator per unit time; When the current evaporation amount of water is less than or equal to the dehumidification amount of the evaporator, the air inlet end or the internal wind shield of the bypass air duct is controlled to move so that the bypass air duct is closed; When the current evaporation amount of water is greater than the dehumidification amount of the evaporator, the wind shield is controlled to move so that the bypass air duct is opened.

5. The control method of the clothes processing device according to claim 4, characterized in that: When the bypass air duct is in an open state, adjusting the flow area of ​​the bypass air duct according to the current water evaporation amount includes: Subtract the dehumidification capacity of the evaporator from the current water evaporation capacity to obtain a difference; The movement of the wind shield is controlled according to the difference, and the flow area of ​​the bypass air duct is adjusted so that the sum of the dehumidification capacity of the evaporator and the dehumidification capacity of the auxiliary heat exchanger is greater than or equal to the current water evaporation capacity.

6. The control method of the clothes processing device according to claim 3, characterized in that: The determining of the current amount of water evaporation of the clothes in the clothes treatment drum per unit time comprises: Calculate the current water content q1 of the drying airflow at the drying inlet and the water content q2 of the drying airflow at the drying outlet per unit time; The current water evaporation amount Δq=q2-q1 is determined.

7. The control method of the clothes processing device according to claim 6, characterized in that: The calculation of the current water content q1 in the drying airflow at the drying inlet and the water content q2 in the drying airflow at the drying outlet within a unit time includes: Calculate the flow rate Q1 and average moisture content a1 of the drying airflow at the drying inlet and the flow rate Q2 and average moisture content a2 of the drying airflow at the drying outlet per unit time; It is determined that q1=Q1*a1 and q2=Q2*a2.

8. The control method of the clothes processing device according to claim 3, characterized in that: The control method further comprises: Acquiring the current temperature of the drying airflow in the laundry processing drum; comparing the current temperature with a preset temperature; According to the comparison result between the current temperature and the preset temperature, controlling the bypass air duct to be opened or closed; Among them, the current temperature is related to the current water evaporation amount. When the current temperature is lower than the preset temperature, as the current temperature increases, the current water evaporation amount gradually increases; when the current temperature approaches the preset temperature, as the current temperature increases, affected by the material of the clothes, the current water evaporation amount gradually decreases.

9. The control method of the clothes processing device according to claim 8, characterized in that: The drying mode includes a standard drying mode, the preset temperature includes a first preset temperature; and the controlling the bypass air duct to be opened or closed according to the comparison result between the current temperature and the preset temperature includes: determining a current drying mode of the laundry processing device; When the current drying mode is the standard drying mode, comparing the current temperature with the first preset temperature; When the current temperature is lower than the first preset temperature, controlling the air inlet end or the internal wind shield of the bypass air duct to move so that the bypass air duct is opened; When the current temperature is equal to or greater than the first preset temperature, the wind shield is controlled to move so that the bypass air duct is closed.

10. The control method of the clothes processing device according to claim 9, characterized in that: The drying mode further includes a quick drying mode, the preset temperature further includes a second preset temperature; and the controlling the bypass air duct to be opened or closed according to the comparison result between the current temperature and the preset temperature further includes: When the current drying mode is a quick drying mode, comparing the current temperature with a second preset temperature; When the current temperature is lower than the second preset temperature, controlling the wind shield to move so that the bypass air duct is opened; When the current temperature is equal to or greater than the second preset temperature, controlling the wind shield to move so that the bypass air duct is closed; Wherein, the second preset temperature is lower than the first preset temperature.

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