CN113654109A - Air conditioner and control method and control device thereof - Google Patents
Air conditioner and control method and control device thereof Download PDFInfo
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- CN113654109A CN113654109A CN202010398673.2A CN202010398673A CN113654109A CN 113654109 A CN113654109 A CN 113654109A CN 202010398673 A CN202010398673 A CN 202010398673A CN 113654109 A CN113654109 A CN 113654109A
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000010438 heat treatment Methods 0.000 claims abstract description 64
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 17
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims 1
- 238000005485 electric heating Methods 0.000 description 12
- 230000006870 function Effects 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 8
- 210000003205 muscle Anatomy 0.000 description 7
- 230000005856 abnormality Effects 0.000 description 6
- 238000004590 computer program Methods 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000001012 protector Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
- F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/009—Indoor units, e.g. fan coil units characterised by heating arrangements
- F24F1/0093—Indoor units, e.g. fan coil units characterised by heating arrangements with additional radiant heat-discharging elements, e.g. electric heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention belongs to the technical field of air treatment, and particularly provides an air conditioner, a control method and a control device thereof, wherein the air conditioner comprises an indoor part, the indoor part comprises a shell, a heating assembly is further arranged in the shell and is arranged on the upstream side of an air supply outlet along the air supply direction of the air conditioner, the air conditioner is further provided with a temperature sensor unit, the temperature sensor unit comprises a (first and second) temperature sensor capable of directly sensing the temperature radiated by the heating assembly and a third temperature sensor capable of sensing the temperature of a region which is related to the heating assembly and is different from the sensing of the second temperature sensor, and the (first, second and third) temperature sensor is respectively provided with a (first, second and third) normally closed relay which are connected in series. Through the cooperation of the three relays, the requirement of the electrical heating abnormity test of the air conditioner can be met more comprehensively.
Description
Technical Field
The invention relates to the technical field of air treatment, in particular to an air conditioner and a control method and a control device thereof.
Background
In the process of developing an air conditioner with an electric heating function, an electric heating abnormity test is required according to standard, and the purpose of the electric heating abnormity test is mainly to ensure that the developed air conditioner cannot be damaged or extremely phenomena such as fire and the like caused by the wrong operation of a user, and therefore the loss of the user is caused. Error operations such as by a user may include, but are not limited to: the user carelessly shields the air supply opening and/or the air return opening of the air conditioner in which the electric heating function is operating with a curtain/clothes or the like. Such an erroneous operation may cause heat accumulated in the air conditioner to be not dissipated in time, so that the temperature in the air conditioner is continuously increased, and in case that the temperature is increased to a certain extent or the high temperature state is continued for a certain time, the above-mentioned air conditioner may be damaged or an extreme phenomenon such as fire may occur.
At present, in order to ensure the performance of an electrical heating abnormity test, a double protection mechanism consisting of a protector and a fuse is adopted. The invention patent application (CN109780637A) discloses a heating assembly, an electric heating device and a ceiling machine, wherein the heating assembly comprises a support, a PTC heater, a mounting bracket, a first fuse link and a temperature controller, the support is used for being mounted on a mounting plate, the PTC heater is mounted on the support, the mounting bracket is mounted on the support and positioned on the surface of the PTC heater, the first fuse link and the temperature controller are mounted on the mounting bracket, and the first fuse link and the temperature controller are both electrically connected with the PTC heater. Like this, when the PTC heater reaches the protection temperature, the temperature controller disconnection, work as when the PTC heater reduces to the reset temperature, the temperature controller resets, works as when the PTC heater reaches fusing temperature, first fuse-link fusing, the temperature controller is right the PTC heater plays the one-level protection, first fuse-link is right the PTC heater plays the second grade protection.
The intention of the above arrangement is double protection, however, in the event of a protector failure, the fuse does not function as a timely protection. Even if the fuse is in operation, the temperature of the air supplied by the air conditioner is often above the high temperature limit of the conventional equipment, and the equipment or the components in the equipment are burnt out and cannot be reused.
Accordingly, there is a need in the art for a new solution to the above problems.
Disclosure of Invention
Technical problem
In view of the above, the technical problem to be solved by the present invention is to provide an air conditioner with a new protection mechanism, and a control method and a control device thereof, wherein the new protection mechanism is to solve the problem that the existing protection mechanism of the air conditioner cannot fully meet the requirement of the electrical heating anomaly test of the air conditioner.
Solution scheme
The invention provides a control method of an air conditioner, the air conditioner comprises an indoor part, the indoor part comprises a shell, the shell is provided with an air return opening and an air supply opening, an indoor heat exchanger and an indoor fan are arranged in the shell, air enters the shell through the air return opening under the action of the indoor fan and is sent into an indoor space through the indoor heat exchanger and the air supply opening in sequence, a heating assembly is further arranged in the shell, the heating assembly is arranged on the upstream side of the air supply opening along the air supply direction of the air conditioner, the air conditioner is further provided with a temperature sensor unit, and the temperature sensor unit comprises: a first temperature sensor provided at a position where a temperature radiated from the heating member can be directly sensed, the first temperature sensor being provided with a first normally closed relay; a second temperature sensor provided at a position where the temperature radiated from the heating member can be directly sensed, the second temperature sensor being provided with a second normally closed relay; and a third temperature sensor disposed to be able to sense a temperature of a region related to the heating assembly, which is different from a region of the second temperature sensor, the third temperature sensor being provided with a third normally closed relay; the first, second and third normally-closed relays are connected in series to each other to a power supply circuit of the heating assembly so as to: the heating assembly can be stopped under the condition that any one of the heating assemblies is disconnected; the control method comprises the following steps: under the condition that the temperature detected by the first temperature sensor is greater than or equal to a first set temperature, the first normally closed relay is opened; under the condition that the temperature detected by the second temperature sensor is greater than or equal to a second set temperature, the second normally closed relay is opened; under the condition that the temperature detected by the third temperature sensor is greater than or equal to a third set temperature, the third normally-closed relay is switched off; wherein the second set temperature is greater than the first set temperature.
First, the present invention replaces the (protector, fuse) with the temperature sensor, and the operation protection mechanism of the (protector, fuse) with the protection mechanism of the temperature sensor-normally closed relay. On the basis, a mode of adding a group of temperature sensors and normally closed relays is adopted, so that the requirements of the electric heating abnormity test of the air conditioner can be met more comprehensively.
In addition, by limiting at least the (first and second) set temperatures, the air conditioner can be effectively protected against the temperatures in the area before the air blow and the area after the air blow in the electric heating abnormality test, and the air conditioner can be prevented from being mechanically damaged or catching fire in the electric heating abnormality test.
With the above control method, in one possible embodiment, the casing includes a mounting base having an opening through which the air heated by the heating element is passed to the air blowing port, wherein the second temperature sensor is provided on an upstream side of the mounting base as viewed in a flow direction of the air so as to detect a temperature directly radiated from the heating element; the third temperature sensor is provided on a downstream side of the mounting base so as to detect a temperature of air sent to the air outlet through the opening.
By providing the mounting base, the casing is divided into two regions in the air flow direction, one of which is a region in which the temperature radiated from the heating unit can be directly sensed, and the other is the temperature of air heated by the heating unit (in the case where the heating unit is not operated, the air is not heated) and then reaching the air supply opening, and the temperatures of the two regions are respectively protected by the temperature sensor and the normally closed relay, so that the different regions concerned in the electrical heating abnormality test can be effectively protected.
It can be understood that, on the premise that the sensed area satisfies the condition, the specific installation positions and installation modes of the second temperature sensor and the third temperature sensor can be flexibly selected, such as: the second temperature sensor may be disposed at any position of the air conditioner in the air flow region between the return air opening and the mounting base, such as a position near the downstream side of the indoor heat exchanger, a position near the upstream side of the mounting base, or any position therebetween, and the third temperature sensor may be disposed at any position of the air conditioner in the air flow region between the mounting base and the air supply opening, such as a position near the opening, a position near the air supply opening, or any position therebetween.
In addition, on the premise of satisfying the separation function, the structural form of the mounting base body, the relative position of the mounting base body and the shell and the fixing mode can be flexibly selected, such as: the mounting base body and the shell can be integrally formed or fixedly connected, the mounting base body can be an integral component or a combination of a plurality of components, the structural form can be any reasonable shape such as a block shape and a plate shape, if the mounting base body comprises two semicircular plates fixed in the shell in a screwed connection mode, and the two semicircular plates are oppositely arranged to enclose into an opening shape.
With regard to the above control method, in one possible embodiment, the first temperature sensor and the second temperature sensor are both directly provided on a side of the mounting base facing the heating assembly.
With this arrangement, the (first and second) temperature sensors are mounted on the air conditioner.
With regard to the above control method, in one possible embodiment, the housing is formed with a volute on an upstream side of the air supply opening, and the air heated by the heating assembly is led to the air supply opening through the opening and the volute in this order, wherein the third temperature sensor is provided at the volute.
Through the arrangement, the third temperature sensor is mounted on the air conditioner.
With regard to the above control method, in one possible embodiment, the third temperature sensor is disposed at a position of the volute corresponding to above the indoor fan.
With this arrangement, the third temperature sensor can detect the temperature on the downstream side of the mounting base more favorably, and the control method can be realized more accurately.
With regard to the above control method, in one possible embodiment, the first set temperature is not less than 45 ℃.
With regard to the above control method, in one possible embodiment, the second set temperature is at least 30 ℃ greater than the first set temperature.
With such an arrangement, it is possible to protect the temperature in the radiation region of the heating element more effectively in the electrical heating abnormality test.
With regard to the above control method, in a possible embodiment, the third set temperature is a value between 85 and 95 ℃.
With this arrangement, it is possible to protect the temperature in the region after the air blow in the electrical heating abnormality test more effectively.
A second aspect of the present invention provides an air conditioner including a control module for performing the control method of the air conditioner of any one of the preceding claims.
It can be understood that the air conditioner has all the technical effects of the control method of the air conditioner, and the details are not described herein.
A third aspect of the present invention provides a control device including a storage unit that stores a program capable of executing the control method of the air conditioner according to any one of the foregoing, and a processing unit that calls the program and executes the control method of the air conditioner according to any one of the foregoing
It can be understood that the control device has all the technical effects of the control method of the air conditioner, and the details are not repeated herein.
Drawings
The present invention is described below in conjunction with a window air conditioner and with reference to the accompanying drawings. In the drawings:
fig. 1 is a schematic view illustrating a window type air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a window air conditioner according to one embodiment of the present invention;
fig. 3 is a schematic view (upstream side) showing the structure of a mounting base of a window type air conditioner according to an embodiment of the present invention;
FIG. 4 is a schematic view of the mounting of the (first and second) temperature sensors of a window air conditioner in accordance with one embodiment of the present invention;
FIG. 5 is a schematic view illustrating the installation of a fixing rib of a window type air conditioner according to an embodiment of the present invention;
FIG. 6 is a schematic view illustrating a control principle of a window type air conditioner according to an embodiment of the present invention; and
fig. 7 is a flowchart illustrating a control method of a window type air conditioner according to an embodiment of the present invention.
List of reference numerals:
100. a window type air conditioner; 1. an outdoor part; 11. an outdoor air inlet grille; 2. an indoor section; 21. an air supply outlet; 22. an air return opening; 23. an enclosed area; 31. pulling the curtain frame; 32. a window machine fixing bracket; 41. an indoor heat exchanger; 42. an indoor fan; 43. a volute; 5. a heating assembly; 6. installing a base body; 61. an opening; 7. a base frame; 71. a vertical portion; 72. a transverse portion; 73. flanging; 751. a first protrusion; 752. a second protrusion; 76. fixing the ribs; 761. bending; 762. a butt joint section; 77. supporting ribs; 78. an electric heating wire; 81. a first temperature sensor; 82. a second temperature sensor; 91. a first normally closed relay; 92. a second normally closed relay; 93. a third normally closed relay; 10. and a control module.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. Although the present embodiment is described by taking a window type air conditioner as an example, it is obvious that the present invention may also be other types of air conditioners, such as a built-in type air conditioner, a cabinet type air conditioner, etc., in which an indoor unit and an outdoor unit are separated.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 and 2, fig. 1 is a schematic structural view of an air conditioner according to an embodiment of the present invention, and fig. 2 is a schematic sectional view of a window type air conditioner according to an embodiment of the present invention. As shown in fig. 1 and 2, the window type air conditioner 100 mainly includes an outdoor part 1 and an indoor part 2, wherein an outdoor air inlet grille 11 is provided on a casing of the outdoor part, and a compressor, an outdoor heat exchanger, an outdoor fan, etc. are provided inside the casing. The casing of the indoor part is provided with an air supply outlet 21 above a panel facing an indoor space, an air return opening 22 below the casing, a closed area 23 between the air supply outlet and the air return opening, and buttons, a display interface and the like are arranged on the closed area. The casing is mainly internally provided with an indoor heat exchanger 41, an indoor fan 42, an electric cabinet and the like, if the indoor fan is a centrifugal fan, a volute 43 is formed in the casing at a position corresponding to the air supply outlet. The refrigerant circulation circuit further includes a throttle member (such as a capillary tube) provided between the outdoor heat exchanger and the indoor heat exchanger. And, corresponding to the window air conditioner of electric heater type, the inside heating element 5 that still disposes of the casing of indoor portion, heating element 5 sets up between indoor heat exchanger and indoor fan to under indoor fan's effect, the air of interior space sends into the interior space again through return air inlet, indoor heat exchanger, heating element, spiral case, supply-air outlet in proper order, promptly: the air after being subjected to the heat convection treatment with the indoor heat exchanger is heated by the heating assembly and then is delivered into the indoor space through the air supply outlet. In addition, the two sides of the outer casing of the window type air conditioner are respectively extended outwards to form a curtain pulling frame 31, and the bottom of the outer casing of the window type air conditioner 100 is provided with a window machine fixing support 32. Due to the introduction of the electric heating function, the refrigerating and heating functions of the window type air conditioner can be realized by combining a single-cooler type with the heating component. When the refrigerant circularly flows along the compressor → the outdoor heat exchanger → the indoor heat exchanger → the compressor, the window type air conditioner realizes the refrigeration. When the heating component radiates heat, the window type air conditioner realizes heating.
Referring to fig. 3 to 5, fig. 3 is a schematic view showing a structure (upstream side) of a mounting base of a window type air conditioner according to an embodiment of the present invention, fig. 4 is a schematic view showing mounting of a first temperature sensor and a second temperature sensor of a window type air conditioner according to an embodiment of the present invention, and fig. 5 is a schematic view showing mounting of a fixing rib of a window type air conditioner according to an embodiment of the present invention. As shown in fig. 3 to 5, a mounting base 6 is provided in the casing, and the mounting base has a plate-like structure having an opening 61 at a position aligned with the indoor fan, so that air heated by the heating assembly is introduced into the scroll 43 through the opening and is then delivered into the indoor space through the air delivery opening 21. The heating unit 5 includes a heating holder fixed to an upstream side of the mounting base as viewed in the flow direction of the air, and a heating element, such as a heating wire 8, provided on the heating holder. Taking the electric heating wire as an example, a plurality of electric heating wires are laid at the position opposite to the opening.
According to the orientation in fig. 3, the heating rack comprises a base frame 7, which is located on the right side of the opening, and fixing ribs 76, which are connected to the base frame and extend to the left side of the opening. The right base frame includes a vertical portion 71 and a lateral portion 72 extending from the upper side of the vertical portion from right to left, to which a first temperature sensor 81 and a second temperature sensor 82 are mounted. Specifically, a first mounting position and a second mounting position are formed on the lateral portion, the first temperature sensor 81 and the second temperature sensor 82 are fixedly disposed in the first mounting position and the second mounting position, respectively, in the vertical direction, it can be seen that both the first temperature sensor 81 and the second temperature sensor 82 are located in a region where the heater wire is located, specifically, between the downstream side of the indoor heat exchanger and the upstream side of the centrifugal fan, and the temperature sensing sides of both the first temperature sensor 81 and the second temperature sensor 82 are located below. In this way, the first temperature sensor 81 and the second temperature sensor 82 are provided at the upper right corner of the upstream side of the mounting base, and both temperature sensing sides are located in the region where the heater wire is located, so that the temperature radiated from the heater wire can be sensed.
Still according to the orientation of fig. 3, wherein the base frame is detachably fixed to the mounting base. In one possible embodiment, the vertical part and/or the transverse part extends with a flange 73 on the side close to the mounting base, which flange is fixedly connected to the mounting base by means of a fastening element (e.g. a screw or the like). The direction that sets up of fixed muscle 76 is roughly parallel with heater strip 78, the right-hand member of fixed muscle has 761 of bending, it is porose to open on vertical section, fixed muscle stretches out from the right left side after passing the hole from the right left side, bend and lean on the right side at vertical section, the left end of fixed muscle has butt joint section 762, the upstream side of installation base member is provided with the first arch 751 that corresponds with the number of fixed muscle, be provided with the groove that matches with the butt joint section in the first arch, so, under the state of having assembled, the bending of fixed muscle right-hand member supports and leans on to vertical section's right side, the butt joint section of fixed muscle left end supports and leans on to first protruding groove in.
In one embodiment, the number of the fixing ribs is two, and a vertical support rib 77 is additionally arranged between the two horizontal fixing ribs 76 for enhancing the strength and ensuring the stability of the connection. The first bulge is a plate with a prismatic structure, and a strip-shaped groove corresponding to the butt joint section is formed at the junction of the prismatic structure.
In a specific embodiment, the upstream side of the mounting base is provided with a second protrusion 752, the second protrusion is provided with a mounting hole matched with a screw, and the flange 73 abuts against the second protrusion 752 and then is connected with the second protrusion by the screw. In this way, in the assembled state, the base frame is not in abutting contact with the upstream side of the mounting base, thereby facilitating the mounting and dismounting operation of the heating unit to and from the housing.
On this basis, a temperature sensor, i.e., a third temperature sensor (not shown), is added to the upper left corner of the upstream side of the mounting base. The third temperature sensor is located at a downstream side of the mounting base in the air supply direction, i.e., at a side of the mounting base away from the heater strip, such that the third temperature sensor detects the temperature of the air heated by the heater strip, and then supplied to the scroll case through the opening and finally supplied to the indoor space through the air supply opening. In a particular embodiment, the volute above the indoor fan includes an upper volute and a lower volute that form an air duct, wherein the third temperature sensor is mounted on the upper volute.
Referring to fig. 6, fig. 6 is a schematic view illustrating a control principle of a window type air conditioner according to an embodiment of the present invention. As shown in fig. 6, a first normally-closed relay 91, a second normally-closed relay 92 and a third normally-closed relay 93 are provided for the (first, second and third) temperature sensors, respectively, and the (first, second and third) normally-closed relays are electrically connected in series to each other to a power supply circuit of the heating wire. The window type air conditioner comprises a control module 10, and the control module determines whether to adjust the opening and closing states of a (first, second and third) normally closed relay according to the received temperature detected by a (first, second and third) temperature sensor, so that the window type air conditioner is protected.
It can be seen that the heating wire can provide the air conditioner with the function of heating air only when the three normally-closed relays are in the normally-closed state. Therefore, as long as the temperature detected by one temperature sensor reaches the set temperature for opening the corresponding normally closed relay, the window type air conditioner can be protected from being damaged by the mode of cutting off the power of the heating wire.
In the description of the present invention, a "module" or "processor" may include hardware, software, or a combination of both. A module may comprise hardware circuitry, various suitable sensors, communication ports, memory, may comprise software components such as program code, or may be a combination of software and hardware. The processor may be a central processing unit, microprocessor, image processor, digital signal processor, or any other suitable processor. The processor has data and/or signal processing functionality. The processor may be implemented in software, hardware, or a combination thereof. Non-transitory computer readable storage media include any suitable medium that can store program code, such as magnetic disks, hard disks, optical disks, flash memory, read-only memory, random-access memory, and the like.
It will be understood by those skilled in the art that all or part of the flow of the method according to the above-described embodiment may be implemented by a computer program, which may be stored in a computer-readable storage medium and used to implement the steps of the above-described embodiments of the method when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying said computer program code, media, usb disk, removable hard disk, magnetic diskette, optical disk, computer memory, read-only memory, random access memory, electrical carrier wave signals, telecommunication signals, software distribution media, etc. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
Because the (first, second and third) normally closed relays are mutually connected in series to the power supply circuit of the heating wire, the heating assembly can stop running under the condition that any one normally closed relay is disconnected, so that the phenomena of damage and the like of the window type air conditioner are avoided. Specifically, the method comprises the following steps:
referring to fig. 7, fig. 7 is a flow chart illustrating a control method of a window type air conditioner according to an embodiment of the present invention. As shown in fig. 7, the control method includes:
under the condition that the temperature detected by the first temperature sensor is greater than or equal to a first set temperature, the first normally closed relay is switched off;
under the condition that the temperature detected by the second temperature sensor is greater than or equal to a second set temperature, the second normally-closed relay is switched off;
and under the condition that the temperature detected by the third temperature sensor is greater than or equal to a third set temperature, the third normally-closed relay is opened.
The first set temperature T1 may be set to a value not less than 45 ℃, such as a value between 45 ℃ and 55 ℃, for example, 45 ℃ as selected in the reverse analysis.
Among them, the second set temperature T2(T2> T1) may be set to a certain value at least 30 ℃, generally preferably around 80 ℃, greater than T1. 45 +30 ℃ + 75 ℃ as selected in the retrogradation analysis procedure above.
Wherein the third set temperature T3 may be set to a value of 85-95 deg.c, such as 90 deg.c.
It is to be understood that since the (second, third) normally closed relays corresponding to the (second, third) temperature sensors are protection mechanisms performed for different areas, the opening temperatures, i.e., the (second, third) set temperatures, corresponding to the (second, third) normally closed relays may be the same or different. As in one possible embodiment, the third set point temperature is generally greater than the second set point temperature.
It can be seen that the window type air conditioner can be protected by switching the opening and closing states of the (first, second and third) normally closed relays through the control module.
Based on the above-described protection mechanism of the present invention, the examination was performed with reference to the 100 series test, the 200 series test, and the 300 series test in the foregoing electrical heating abnormality test again.
The passing of the 300 series test can be ensured by the arrangement of the first temperature sensor and the normally closed relay.
The passing of the 200 series test can be ensured through the arrangement of the (second and third) temperature sensors and the normally closed relay. Meanwhile, in order to avoid the situation where the first normally-closed relay is opened prior to the (second, third) normally-closed relay, it is required that the (second, third) set temperature cannot be set too low.
In the 100 series test, when the test is performed with the air outlet blocked, it is necessary to ensure that the function corresponding to the fuse can be operated. In the present invention, this is achieved by the third normally closed relay acting. Specifically, under the condition that the air supply outlet is blocked, because the fan at the moment is in normal operation, fresh air is continuously sucked into the shell, so that the temperature near the second temperature sensor is not high, namely the temperature detected by the second temperature sensor at the moment does not reach the second set temperature. On the contrary, after the fresh air is heated and blown out through the opening, the temperature near the third temperature sensor is increased, so that the probability that the temperature detected by the third temperature sensor reaches the third set temperature is higher. Therefore, the third set temperature is only required to be set to 90 ℃, and the third normally-closed relay can be switched off when the outlet air temperature reaches 90 ℃, so that the volute, the panel and the like of the window type air conditioner cannot be burnt in a 100 series test.
In the 100 series test, when the test is performed under the condition that the fan is locked, it is necessary to ensure that the function corresponding to the fuse can be operated. In the present invention, this is achieved by the second normally closed relay acting. Specifically, in the case where the blower is locked, no hot air is blown out from the opening, the temperature detected by the third temperature sensor is not high and thus does not reach the third set temperature, and the temperature detected by the second temperature sensor is the heat radiated from the heating wire, so that the temperature detected by the second temperature sensor rapidly rises until the second set temperature is reached and the second normally closed relay is turned off.
The air conditioner provided by the invention can ensure that the phenomena of mechanical damage or fire and the like can not occur under various extreme test conditions in the process of the electrical heating abnormity test by the cooperation of the three pairs of temperature sensors and the normally closed relay.
It should be noted that although the window type air conditioner of the specific structure constructed as above is described as an example, those skilled in the art will appreciate that the present invention should not be limited thereto. In fact, the user can flexibly adjust the specific structure of the air conditioner according to the situation of practical application scene and the like.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A control method of an air conditioner is characterized in that the air conditioner comprises an indoor part, the indoor part comprises a shell, the shell is provided with an air return opening and an air supply opening, an indoor heat exchanger and an indoor fan are arranged in the shell, air enters the shell through the air return opening under the action of the indoor fan and is sent into an indoor space through the indoor heat exchanger and the air supply opening in sequence, a heating assembly is further arranged in the shell and is arranged on the upstream side of the air supply opening along the air supply direction of the air conditioner,
the air conditioner is further provided with a temperature sensor unit including:
a first temperature sensor provided at a position where a temperature radiated from the heating member can be directly sensed, the first temperature sensor being provided with a first normally closed relay;
a second temperature sensor provided at a position where the temperature radiated from the heating member can be directly sensed, the second temperature sensor being provided with a second normally closed relay; and
a third temperature sensor disposed to be able to sense a temperature of a region associated with the heating assembly that is different from a region sensed by the second temperature sensor, the third temperature sensor being configured with a third normally closed relay;
the first, second and third normally-closed relays are connected in series to each other to a power supply circuit of the heating assembly so as to: the heating assembly can be stopped under the condition that any one of the heating assemblies is disconnected;
the control method comprises the following steps:
under the condition that the temperature detected by the first temperature sensor is greater than or equal to a first set temperature, the first normally closed relay is opened;
under the condition that the temperature detected by the second temperature sensor is greater than or equal to a second set temperature, the second normally closed relay is opened;
under the condition that the temperature detected by the third temperature sensor is greater than or equal to a third set temperature, the third normally-closed relay is switched off;
wherein the second set temperature is greater than the first set temperature.
2. The control method according to claim 1, wherein the casing includes a mounting base having an opening through which the air heated by the heating element is passed to the air blowing port,
wherein the second temperature sensor is provided on an upstream side of the mounting base as viewed in a flow direction of the air so as to detect a temperature directly radiated from the heating element; the third temperature sensor is provided on a downstream side of the mounting base so as to detect a temperature of air sent to the air outlet through the opening.
3. The control method of claim 2, wherein the first temperature sensor and the second temperature sensor are both disposed directly on a side of the mounting substrate facing the heating assembly.
4. The control method according to claim 2, wherein the housing is formed with a volute on an upstream side of the supply port, and the air heated by the heating unit is led to the supply port through the opening and the volute in this order,
wherein the third temperature sensor is provided to the volute.
5. The control method according to claim 4, wherein the third temperature sensor is provided at a position of the volute corresponding to above the indoor fan.
6. The control method according to any one of claims 1 to 5, characterized in that the first set temperature is not less than 45 ℃.
7. The control method according to claim 6, characterized in that the second set temperature is at least 30 ℃ greater than the first set temperature.
8. Control method according to any one of claims 1-5, characterized in that the third set temperature is a value between 85-95 ℃.
9. An air conditioner characterized by comprising a control module for executing the control method of the air conditioner according to any one of claims 1 to 8.
10. A control device is characterized by comprising a storage unit and a processing unit,
the storage unit stores a program capable of executing the control method of the air conditioner according to any one of claims 1 to 8,
the processing unit may call the program and execute the control method of the air conditioner according to any one of claims 1 to 8.
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| CN202010398673.2A CN113654109B (en) | 2020-05-12 | 2020-05-12 | Air conditioner and control method and control device thereof |
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| CN202010398673.2A CN113654109B (en) | 2020-05-12 | 2020-05-12 | Air conditioner and control method and control device thereof |
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