阅读说明：本技术 热泵式衣物烘干设备的故障检测方法 (Fault detection method for heat pump type clothes drying equipment ) 是由 赵新丰 姚龙平 邴进东 于 2020-07-02 设计创作，主要内容包括：本发明涉及热泵式衣物烘干设备故障检测技术领域,具体提供了一种热泵式衣物烘干设备的故障检测方法,旨在解决现有热泵式衣物烘干设备不能在发生故障时及时判断出故障类型以及进行信息提醒以提醒用户的技术问题。为此目的,根据本发明实施例的步骤S101：在热泵式衣物烘干设备启动后,获取热泵式衣物烘干设备的冷凝器温度和压缩机排气口温度；步骤S102：根据冷凝器温度和压缩机排气口温度的比较结果判断热泵式衣物烘干设备是否发生故障,并且根据判断结果输出相应的故障提醒信息；其中,故障提醒信息包括设备故障类型。本发明可以使热泵式衣物烘干设备能够在发生故障时及时判断出故障类型以及进行信息提醒以提醒用户,提升用户使用体验。(The invention relates to the technical field of fault detection of heat pump type clothes drying equipment, and particularly provides a fault detection method of heat pump type clothes drying equipment, aiming at solving the technical problem that the conventional heat pump type clothes drying equipment cannot judge the fault type and carry out information reminding to remind a user when a fault occurs. For this purpose, step S101 according to an embodiment of the present invention: after the heat pump type clothes drying equipment is started, acquiring the temperature of a condenser and the temperature of an exhaust port of a compressor of the heat pump type clothes drying equipment; step S102: judging whether the heat pump type clothes drying equipment has faults or not according to the comparison result of the temperature of the condenser and the temperature of the exhaust port of the compressor, and outputting corresponding fault reminding information according to the judgment result; the fault reminding information comprises equipment fault types. The invention can enable the heat pump type clothes drying equipment to judge the fault type in time and carry out information reminding to remind a user when the fault occurs, thereby improving the use experience of the user.)

1. A method of fault detection for a heat pump clothes drying apparatus, the method comprising:

after a heat pump type clothes drying device is started, acquiring the temperature of a condenser and the temperature of an exhaust port of a compressor of the heat pump type clothes drying device;

judging whether the heat pump type clothes drying equipment has faults or not according to the comparison result of the temperature of the condenser and the temperature of the exhaust port of the compressor, and outputting corresponding fault reminding information according to the judgment result;

and the fault reminding information comprises the equipment fault type.

2. The method of claim 1, wherein the step of determining whether the heat pump clothes drying apparatus is faulty according to the comparison result between the condenser temperature and the compressor outlet temperature, and outputting a corresponding fault notification message according to the determination result specifically comprises:

acquiring the initial temperature of a compressor exhaust port when the heat pump type clothes drying equipment is started, and acquiring the temperature change value of the compressor exhaust port according to the initial temperature and the temperature of the compressor exhaust port at the current moment;

calculating the real-time absolute temperature difference value between the condenser temperature and the compressor exhaust port temperature;

judging whether the temperature change value is smaller than or equal to a first preset value and whether the real-time temperature difference absolute value is smaller than a second preset value; if the temperature change value is smaller than or equal to the first preset value and the absolute value of the temperature difference is smaller than the second preset value, judging that the heat pump type clothes drying equipment has a fault and outputting first fault reminding information;

wherein the equipment fault type in the first fault reminding information is a compressor fault;

and/or the like and/or,

the step of judging whether the heat pump type clothes drying equipment has faults or not according to the comparison result of the condenser temperature and the compressor exhaust port temperature and outputting corresponding fault reminding information according to the judgment result specifically comprises the following steps:

judging whether the temperature of the exhaust port of the compressor at the current moment is greater than a first preset temperature or not;

if the temperature of the compressor exhaust port is higher than a first preset temperature, calculating a real-time temperature difference absolute value between the temperature of the condenser and the temperature of the compressor exhaust port, and judging whether the real-time temperature difference absolute value is higher than a third preset value or not; if yes, judging that the heat pump type clothes drying equipment has a fault and outputting second fault reminding information;

wherein the equipment failure type in the second failure notification message is a refrigerant leak.

3. The method of claim 2, wherein prior to the step of obtaining a temperature change value of the compressor discharge from the initial temperature and a compressor discharge temperature at a current time, the method further comprises:

judging whether the initial temperature is lower than a second preset temperature or not; and if so, executing the step of acquiring the temperature change value of the compressor exhaust port according to the initial temperature and the temperature of the compressor exhaust port at the current moment.

4. The method of claim 2, wherein prior to the step of obtaining a temperature change value of the compressor discharge from the initial temperature and a compressor discharge temperature at a current time, the method further comprises:

acquiring the drying operation time of the heat pump type clothes drying equipment;

judging whether the drying running time is less than a preset time or not; and if so, executing the step of acquiring the temperature change value of the compressor exhaust port according to the initial temperature and the temperature of the compressor exhaust port at the current moment.

5. A fault detection device of a heat pump laundry drying apparatus, characterized in that said device comprises:

a temperature acquisition module configured to acquire a condenser temperature and a compressor discharge temperature of a heat pump laundry drying appliance upon startup of the heat pump laundry drying appliance;

a fault determination module configured to determine whether the heat pump laundry drying apparatus is faulty according to a comparison result of the condenser temperature and the compressor discharge port temperature, and output corresponding fault notification information according to the determination result;

and the fault reminding information comprises the equipment fault type.

6. The detection device according to claim 5, wherein the fault judgment module comprises a first fault judgment submodule and/or a second fault judgment submodule;

the first failure determination submodule is configured to:

acquiring the initial temperature of a compressor exhaust port when the heat pump type clothes drying equipment is started, and acquiring the temperature change value of the compressor exhaust port according to the initial temperature and the temperature of the compressor exhaust port at the current moment;

calculating the real-time absolute temperature difference value between the condenser temperature and the compressor exhaust port temperature;

judging whether the temperature change value is smaller than or equal to a first preset value and whether the real-time temperature difference absolute value is smaller than a second preset value; if the temperature change value is smaller than or equal to the first preset value and the absolute value of the temperature difference is smaller than the second preset value, judging that the heat pump type clothes drying equipment has a fault and outputting first fault reminding information;

wherein the equipment fault type in the first fault reminding information is a compressor fault;

the second failure determination submodule is configured to:

judging whether the temperature of the exhaust port of the compressor at the current moment is greater than a second preset temperature or not;

if the temperature of the compressor exhaust port is higher than a second preset temperature, calculating a real-time temperature difference absolute value between the temperature of the condenser and the temperature of the compressor exhaust port, and judging whether the real-time temperature difference absolute value is higher than a third preset value or not; if yes, judging that the heat pump type clothes drying equipment has a fault and outputting second fault reminding information;

wherein the equipment failure type in the second failure notification message is a refrigerant leak.

7. The fault detection device of claim 6, further comprising:

the first fault judgment submodule is configured to judge whether the initial temperature is less than a first preset temperature; and if so, executing the step of acquiring the temperature change value of the compressor exhaust port according to the initial temperature and the temperature of the compressor exhaust port at the current moment.

8. The fault detection device according to any one of claims 5 to 7, further comprising:

the first failure judgment sub-module is configured to

Acquiring the drying operation time of the heat pump type clothes drying equipment; judging whether the drying running time is less than a preset time or not; and if so, executing the step of acquiring the temperature change value of the compressor exhaust port according to the initial temperature and the temperature of the compressor exhaust port at the current moment.

9. A memory device having a plurality of program codes stored therein, characterized in that said program codes are adapted to be loaded and run by a processor to perform a method of fault detection of a heat pump laundry drying apparatus of any of claims 1 to 4.

10. A control device comprising a processor and a memory device adapted to store a plurality of program codes, characterized in that said program codes are adapted to be loaded and run by said processor to perform a method of fault detection of a heat pump laundry drying apparatus according to any of claims 1 to 4.

Technical Field

The invention belongs to the technical field of fault detection of heat pump type clothes drying equipment, and particularly provides a fault detection method of heat pump type clothes drying equipment.

Background

The heat pump type clothes drying equipment is a device capable of drying clothes, a heat pump system of the equipment comprises an evaporator, a condenser, a compressor and the like, the evaporator, the condenser and the compressor form a closed-loop refrigerant circulation loop, and clothes drying principle of the heat pump type clothes drying equipment is that warm and humid air in a cylinder firstly passes through the evaporator and exchanges heat with the evaporator, so that the temperature of the warm and humid air is reduced to be lower than dew point temperature, water vapor in the air is changed into condensed water to be separated out, the aim of dehumidification is achieved, and the condensed water can be discharged through a drain pipe. The dehumidified low-temperature low-humidity air enters the condenser, the condenser heats the air, the fan leads the heated high-temperature low-humidity air back to the barrel, and the drying of the clothes in the barrel is realized through circulation.

However, the heat pump laundry drying device may fail in the process of drying the laundry, resulting in that the laundry cannot be dried, but the existing heat pump laundry drying device cannot timely determine the type of the failure and perform information reminding to remind the user when the failure occurs, so that the user often finds that the heat pump laundry drying device fails after the heat pump laundry drying device is finished operating, the laundry is not dried, and the user experience is affected. Meanwhile, the method is not used for timely and effective fault treatment of the heat pump type clothes drying equipment by users or equipment maintenance personnel.

Therefore, there is a need in the art for a new fault detection method of a heat pump laundry drying apparatus to solve the above-mentioned problems.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks, the present invention is proposed to provide a fault detection method of a heat pump type laundry drying apparatus, which solves or at least partially solves the technical problem that the existing heat pump type laundry drying apparatus cannot timely determine the type of the fault and perform information reminding to remind the user when the fault occurs.

In a first aspect, there is provided a fault detection method of a heat pump laundry drying apparatus, comprising:

after a heat pump type clothes drying device is started, acquiring the temperature of a condenser and the temperature of an exhaust port of a compressor of the heat pump type clothes drying device;

judging whether the heat pump type clothes drying equipment has faults or not according to the comparison result of the temperature of the condenser and the temperature of the exhaust port of the compressor, and outputting corresponding fault reminding information according to the judgment result;

and the fault reminding information comprises the equipment fault type.

In one aspect of the fault detection method of the heat pump type laundry drying apparatus as described above,

the step of judging whether the heat pump type clothes drying equipment has faults or not according to the comparison result of the condenser temperature and the compressor exhaust port temperature and outputting corresponding fault reminding information according to the judgment result specifically comprises the following steps:

acquiring the initial temperature of a compressor exhaust port when the heat pump type clothes drying equipment is started, and acquiring the temperature change value of the compressor exhaust port according to the initial temperature and the temperature of the compressor exhaust port at the current moment;

calculating the real-time absolute temperature difference value between the condenser temperature and the compressor exhaust port temperature;

judging whether the temperature change value is smaller than or equal to a first preset value and whether the real-time temperature difference absolute value is smaller than a second preset value; if the temperature change value is smaller than or equal to the first preset value and the absolute value of the temperature difference is smaller than the second preset value, judging that the heat pump type clothes drying equipment has a fault and outputting first fault reminding information;

wherein the equipment fault type in the first fault reminding information is a compressor fault;

and/or the like and/or,

the step of judging whether the heat pump type clothes drying equipment has faults or not according to the comparison result of the condenser temperature and the compressor exhaust port temperature and outputting corresponding fault reminding information according to the judgment result specifically comprises the following steps:

judging whether the temperature of the exhaust port of the compressor at the current moment is greater than a first preset temperature or not;

if the temperature of the compressor exhaust port is higher than a first preset temperature, calculating a real-time temperature difference absolute value between the temperature of the condenser and the temperature of the compressor exhaust port, and judging whether the real-time temperature difference absolute value is higher than a third preset value or not; if yes, judging that the heat pump type clothes drying equipment has a fault and outputting second fault reminding information;

wherein the equipment failure type in the second failure notification message is a refrigerant leak.

In one aspect of the fault detection method of the heat pump type laundry drying apparatus as described above,

before the step of obtaining the temperature variation value of the compressor air outlet according to the initial temperature and the temperature of the compressor air outlet at the current moment, the method further comprises the following steps:

judging whether the initial temperature is lower than a second preset temperature or not; and if so, executing the step of acquiring the temperature change value of the compressor exhaust port according to the initial temperature and the temperature of the compressor exhaust port at the current moment.

In one aspect of the fault detection method of the heat pump type laundry drying apparatus as described above,

before the step of obtaining the temperature variation value of the compressor air outlet according to the initial temperature and the temperature of the compressor air outlet at the current moment, the method further comprises the following steps:

acquiring the drying operation time of the heat pump type clothes drying equipment;

judging whether the drying running time is less than a preset time or not; and if so, executing the step of acquiring the temperature change value of the compressor exhaust port according to the initial temperature and the temperature of the compressor exhaust port at the current moment.

In a second aspect, there is provided a fault detection device of a heat pump laundry drying apparatus, the device comprising:

a temperature acquisition module configured to acquire a condenser temperature and a compressor discharge temperature of a heat pump laundry drying appliance upon startup of the heat pump laundry drying appliance;

a fault determination module configured to determine whether the heat pump laundry drying apparatus is faulty according to a comparison result of the condenser temperature and the compressor discharge port temperature, and output corresponding fault notification information according to the determination result;

and the fault reminding information comprises the equipment fault type.

The fault judgment module comprises a first fault judgment submodule and/or a second fault judgment submodule;

the first failure determination submodule is configured to:

acquiring the initial temperature of a compressor exhaust port when the heat pump type clothes drying equipment is started, and acquiring the temperature change value of the compressor exhaust port according to the initial temperature and the temperature of the compressor exhaust port at the current moment;

calculating the real-time absolute temperature difference value between the condenser temperature and the compressor exhaust port temperature;

judging whether the temperature change value is smaller than or equal to a first preset value and whether the real-time temperature difference absolute value is smaller than a second preset value; if the temperature change value is smaller than or equal to the first preset value and the absolute value of the temperature difference is smaller than the second preset value, judging that the heat pump type clothes drying equipment has a fault and outputting first fault reminding information;

wherein the equipment fault type in the first fault reminding information is a compressor fault;

the second failure determination submodule is configured to:

judging whether the temperature of the exhaust port of the compressor at the current moment is greater than a second preset temperature or not;

if the temperature of the compressor exhaust port is higher than a second preset temperature, calculating a real-time temperature difference absolute value between the temperature of the condenser and the temperature of the compressor exhaust port, and judging whether the real-time temperature difference absolute value is higher than a third preset value or not; if yes, judging that the heat pump type clothes drying equipment has a fault and outputting second fault reminding information;

wherein the equipment failure type in the second failure notification message is a refrigerant leak.

In one aspect of the fault detection apparatus of the heat pump type laundry drying appliance as described above,

the first fault judgment submodule is configured to judge whether the initial temperature is less than a first preset temperature; and if so, executing the step of acquiring the temperature change value of the compressor exhaust port according to the initial temperature and the temperature of the compressor exhaust port at the current moment.

In one aspect of the fault detection apparatus of the heat pump type laundry drying appliance as described above,

the first failure judgment sub-module is configured to

Acquiring the drying operation time of the heat pump type clothes drying equipment; judging whether the drying running time is less than a preset time or not; and if so, executing the step of acquiring the temperature change value of the compressor exhaust port according to the initial temperature and the temperature of the compressor exhaust port at the current moment.

In a third aspect, a storage device is provided, having stored therein a plurality of program codes adapted to be loaded and run by a processor to perform the method of fault detection in a heat pump laundry drying appliance according to any of the preceding claims.

In a fourth aspect, a control device is provided, comprising a processor and a memory device, said memory device being adapted to store a plurality of program codes, said program codes being adapted to be loaded and run by said processor to perform the method of fault detection of a heat pump laundry drying apparatus according to any of the above claims.

One or more technical schemes of the invention at least have one or more of the following beneficial effects:

according to the technical scheme, whether the heat pump type clothes drying equipment breaks down or not is judged according to the comparison result of the temperature of the condenser and the temperature of the exhaust port of the compressor, and corresponding fault reminding information is output according to the judgment result, wherein the fault reminding information comprises the equipment fault type.

Drawings

Embodiments of the invention are described below with reference to the accompanying drawings, in which:

fig. 1 is a schematic flow chart of the main steps of a fault detection method of a heat pump laundry drying apparatus according to an embodiment of the present invention;

FIG. 2 is a graph one of condenser temperature and compressor discharge temperature over time according to one embodiment of the present invention;

FIG. 3 is a second graph of condenser temperature and compressor discharge temperature over time according to an embodiment of the present invention;

fig. 4 is a main configuration block diagram of a fault detection device of a heat pump type laundry drying apparatus according to an embodiment of the present invention;

list of reference numerals:

11: curve of condenser temperature versus time; 12: a plot of compressor discharge temperature versus time; 21: a temperature acquisition module; 22. and a fault judgment module.

Detailed Description

Some embodiments of the 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.

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. The term "a and/or B" denotes all possible combinations of a and B, such as a alone, B alone or a and B. The term "at least one A or B" or "at least one of A and B" means similar to "A and/or B" and may include only A, only B, or both A and B. The singular forms "a", "an" and "the" may include the plural forms as well.

The current fault detection method of the heat pump type clothes drying equipment determines whether the heat pump type clothes drying equipment has a fault or not by detecting the temperature change of air passing through a condenser or an air suction device or other positions, but the detection method can only detect whether the heat pump type clothes drying equipment has the fault or not, and sends an alarm to a user after the heat pump type clothes drying equipment has the fault, but the user does not know which type of fault the heat pump type clothes drying equipment has, so that the maintenance of the user or equipment maintenance personnel is inconvenient.

In the embodiment of the invention, the condenser temperature and the compressor exhaust port temperature of the heat pump type clothes drying equipment can be obtained, whether the heat pump type clothes drying equipment has a fault or not is judged according to the comparison result of the condenser temperature and the compressor exhaust port temperature, and corresponding fault reminding information is output according to the judgment result, wherein the fault reminding information comprises the equipment fault type. Because condenser and compressor are the key parts of heat pump formula clothing drying equipment work, can judge whether heat pump formula clothing drying equipment breaks down and specific fault type through comparing condenser temperature and compressor gas vent temperature, make heat pump formula clothing drying equipment can in time remind the user and indicate specific fault type when breaking down, overcome completely that current heat pump formula clothing drying equipment can not in time judge the fault type and carry out information warning in order to remind user's defect when breaking down, make user or equipment maintainer carry out timely effectual fault treatment to heat pump formula clothing drying equipment, promote user's use experience.

In an application scenario of the present invention, a temperature sensor may be disposed on a condenser of the heat pump laundry drying apparatus, a temperature sensor may be disposed at an air outlet of a compressor, after the heat pump laundry drying apparatus is started, the temperature of the condenser and the temperature of the air outlet of the compressor are obtained in real time through the two temperature sensors, the temperature of the condenser and the temperature of the air outlet of the compressor are compared, and whether the heat pump laundry drying apparatus is faulty or not is determined according to the comparison result, and if the heat pump laundry drying apparatus is faulty, the heat pump laundry drying apparatus reminds a user and outputs a corresponding apparatus fault type to the user.

Referring to fig. 1, fig. 1 is a flow chart illustrating major steps of a fault detection method of a heat pump type laundry drying apparatus according to an embodiment of the present invention. As shown in fig. 1, the method for detecting a fault of a heat pump type clothes drying apparatus in the embodiment of the present invention mainly includes the following steps:

step S101: after the heat pump clothes drying equipment is started, the temperature of a condenser and the temperature of an exhaust port of a compressor of the heat pump clothes drying equipment are obtained.

In this embodiment, the temperature of the condenser may be obtained by arranging a temperature sensor on the condenser, the temperature of the exhaust port of the compressor may be obtained by arranging a temperature sensor at the exhaust port of the compressor, the temperature of the condenser may be the surface temperature of the condenser, or may be the temperature of the inlet cylinder (i.e. the temperature when the high-temperature hot air enters the drying cylinder). The heat pump clothes drying device can be a heat pump clothes dryer or a heat pump washing and drying integrated machine, and the adjustment and change of the application objects do not deviate from the technical principle of the invention and are limited within the protection scope of the invention.

Step S102: judging whether the heat pump type clothes drying equipment has faults or not according to the comparison result of the temperature of the condenser and the temperature of the exhaust port of the compressor, and outputting corresponding fault reminding information according to the judgment result; the fault reminding information comprises equipment fault types.

In this embodiment, the heat pump laundry drying apparatus may output corresponding failure reminding information through the voice and/or light of the local apparatus, or may output corresponding failure reminding information through a terminal device (a mobile phone, a computer, etc.) in communication with the local apparatus, for example, the heat pump laundry drying apparatus may send the corresponding failure reminding information to a mobile phone of a user in communication with the local apparatus.

In one possible embodiment, the step of determining whether the heat pump type clothes drying apparatus is out of order according to the comparison result between the condenser temperature and the compressor exhaust temperature, and outputting corresponding failure reminding information according to the determination result specifically includes: acquiring the initial temperature of the exhaust port of the compressor when the heat pump type clothes drying equipment is started, and acquiring the temperature change value of the exhaust port of the compressor according to the initial temperature and the temperature of the exhaust port of the compressor at the current moment; calculating the real-time absolute temperature difference value between the temperature of the condenser and the temperature of the exhaust port of the compressor; judging whether the temperature change value is smaller than or equal to a first preset value and whether the real-time temperature difference absolute value is smaller than a second preset value; if the temperature change value is smaller than or equal to a first preset value and the absolute value of the temperature difference is smaller than a second preset value, judging that the heat pump type clothes drying equipment breaks down and outputting first fault reminding information; wherein the equipment fault type in the first fault reminding information is a compressor fault. Referring to fig. 2, fig. 2 is a graph showing the time-dependent changes in the condenser temperature and the compressor discharge temperature in the present embodiment, i.e., fig. 2 shows a graph 11 showing the time-dependent changes in the condenser temperature and a graph 12 showing the time-dependent changes in the compressor discharge temperature. If the temperature change value of the compressor air outlet is smaller than or equal to the first preset value, the temperature of the compressor air outlet is basically unchanged, namely the compressor does not work, equipment fails, namely the compressor fails, and high-temperature and high-pressure refrigerant cannot be normally output.

In the embodiment, whether the temperature change value of the air outlet of the compressor is smaller than or equal to the first preset value or not and whether the real-time absolute temperature difference value between the temperature of the condenser and the temperature of the air outlet of the compressor is smaller than the second preset value or not are judged, so that the heat pump type clothes drying equipment can timely judge the fault type and remind a user when a fault occurs, the user or equipment maintenance personnel can timely and effectively perform fault treatment on the heat pump type clothes drying equipment, and the user use experience is improved.

It should be noted that, a person skilled in the art can flexibly set the specific value of the first preset value according to actual needs, for example, the first preset value may be 5, 4, 6, or other values, and such adjustment and change of the specific value of the first preset value are not departing from the principle and scope of the present invention, and should be limited within the protection scope of the present invention. Similarly, a person skilled in the art can flexibly set the specific value of the second preset value according to actual needs, for example, the second preset value may be 3, 4, 2, or other values, and such adjustment and change of the specific value of the second preset value are not departing from the principle and scope of the present invention and should be limited within the protection scope of the present invention. In addition, the above-mentioned compressor failure may be that the compressor is not powered, that a problem occurs in the circuit of the compressor, that a problem occurs in a component of the compressor, or other problems, and such adjustment and change to the specific problem of the compressor failure are not departing from the principle and scope of the present invention, and should be limited within the protection scope of the present invention.

In this embodiment, before the step of "obtaining a temperature change value of the compressor discharge port based on the initial temperature and the compressor discharge port temperature at the present time", the method further includes: judging whether the initial temperature is lower than a second preset temperature or not; and if so, executing the step of acquiring the temperature change value of the compressor exhaust port according to the initial temperature and the temperature of the compressor exhaust port at the current moment. In this embodiment, if the initial temperature is lower than the second preset temperature, it indicates that the heat pump laundry drying apparatus is not performing continuous drying, and the compressor outlet temperature is low, the following detection method may be performed to determine whether the apparatus is faulty or not and the type of the fault. After the heat pump type clothes drying equipment is used for completing one-time clothes drying, the temperature of the air outlet of the compressor is very high at the moment, if the heat pump type clothes drying equipment is immediately controlled to perform one-time drying again, the step of obtaining the temperature change value of the air outlet of the compressor according to the initial temperature and the temperature of the air outlet of the compressor at the current moment is executed, the equipment is judged to be in fault, but the equipment is possibly not in fault actually, and through the arrangement, the fault misjudgment can be prevented when the heat pump type clothes drying equipment is used for continuously drying.

It should be noted that, the second preset temperature can be flexibly set by those skilled in the art according to the actual requirement, for example, the second preset temperature can be 50 ℃, 45 ℃, 55 ℃ or other temperatures, and such specific adjustment and change of the second preset temperature are not departing from the principle and scope of the present invention, and should be limited within the protection scope of the present invention.

In another possible embodiment, the step of determining whether the heat pump type clothes drying apparatus is out of order according to the comparison result between the condenser temperature and the compressor exhaust temperature, and outputting corresponding failure reminding information according to the determination result specifically includes: judging whether the temperature of the exhaust port of the compressor at the current moment is greater than a first preset temperature or not; if the temperature of the exhaust port of the compressor is higher than the first preset temperature, calculating a real-time temperature difference absolute value between the temperature of the condenser and the temperature of the exhaust port of the compressor, and judging whether the real-time temperature difference absolute value is higher than a third preset value or not; if so, judging that the heat pump type clothes drying equipment has a fault and outputting second fault reminding information; wherein the equipment failure type in the second failure notification message is a refrigerant leak. In the present embodiment, referring to fig. 3, fig. 3 is a second graph showing the change of the condenser temperature and the compressor discharge port temperature with time in the present embodiment, and as shown in fig. 3, 11 is a curve showing the change of the condenser temperature with time, and 12 is a curve showing the change of the compressor discharge port temperature with time. If the temperature of the air outlet of the compressor is higher than the first preset temperature, the temperature of the compressor is indicated to reach a certain degree, namely the compressor normally runs (the compressor is normal), on the basis, if the absolute value of the real-time temperature difference between the temperature of the condenser and the temperature of the air outlet of the compressor is higher than a third preset value, the temperature difference between the temperature of the condenser and the temperature of the air outlet of the compressor is larger, namely the temperature of the condenser is lower, equipment is in failure, under the condition that the compressor normally runs, the temperature of the condenser is lower, the type of the equipment failure at the moment is considered to be refrigerant leakage, and the refrigerant leakage at the moment can be the refrigerant leakage between the compressor and the condenser.

It should be noted that, the first preset temperature can be flexibly set by those skilled in the art according to the actual needs, for example, the first preset temperature can be 90 ℃, 92 ℃, 95 ℃ or other temperatures, and such specific adjustment and change of the first preset temperature should be within the protection scope of the present invention without departing from the principle and scope of the present invention. Similarly, a person skilled in the art can flexibly set the specific value of the third preset value according to actual needs, for example, the third preset value may be 50, 55, 60, or other values, and such adjustment and change of the specific value of the third preset value without departing from the principle and scope of the present invention shall be limited within the protection scope of the present invention.

In this embodiment, in order to make the fault detection result more accurate, before the step of "obtaining the temperature change value of the compressor discharge port according to the pressure initial temperature and the compressor discharge port temperature at the current time", the method further includes: acquiring the drying operation time of the heat pump type clothes drying equipment; judging whether the drying operation time is less than the preset time or not; and if so, executing the step of acquiring the temperature change value of the compressor exhaust port according to the initial temperature and the temperature of the compressor exhaust port at the current moment. In this embodiment, if the drying operation time is greater than or equal to the preset time, the clothes in the drying drum may have been dried, the compressor may be about to stop operating, but the temperature of the compressor outlet is still high (not yet cooled), and if the step of "obtaining the temperature variation value of the compressor outlet according to the initial temperature and the temperature of the compressor outlet at the current moment" is performed, it is determined that the apparatus is out of order, but actually the apparatus may not be out of order, and through such an arrangement, it is possible to prevent the heat pump type clothes drying apparatus from being misjudged out of order.

It should be noted that the preset time may be a time when the laundry has been dried or is about to be dried, and a person skilled in the art may flexibly set the specific preset time according to the drying time, the drying manner, the material of the laundry, or the like, for example, the preset time may be 60min, 62min, 65min, or other times, and such specific adjustment and change of the preset time should be limited within the protection scope of the present invention without departing from the principle and scope of the present invention.

In the embodiment of the invention, the heat pump type clothes drying equipment can timely judge the fault type and carry out information reminding to remind a user when a fault occurs, so that the user or equipment maintenance personnel can timely and effectively carry out fault treatment on the heat pump type clothes drying equipment, and the use experience of the user is improved.

It should be noted that, although the foregoing embodiments describe each step in a specific sequence, those skilled in the art will understand that, in order to achieve the effect of the present invention, different steps do not necessarily need to be executed in such a sequence, and they may be executed simultaneously (in parallel) or in other sequences, and these changes are all within the protection scope of the present invention.

Further, the invention also provides a fault detection device of the heat pump type clothes drying equipment.

Referring to fig. 4, fig. 4 is a main structural block diagram of a fault detection device of a heat pump type laundry drying apparatus according to an embodiment of the present invention. As shown in fig. 4, the fault detection device of the heat pump type clothes drying apparatus in the embodiment of the present invention mainly includes a temperature acquisition module 21 and a fault determination module 22. In some embodiments, one or more of the temperature acquisition module 21 and the fault determination module 22 may be combined together into one module. In some embodiments, the temperature obtaining module 21 may be configured to obtain a condenser temperature and a compressor outlet temperature of the heat pump laundry drying apparatus after the heat pump laundry drying apparatus is started. The fault determining module 22 may be configured to determine whether the heat pump laundry drying apparatus is faulty according to the comparison result of the condenser temperature and the compressor discharge port temperature, and output corresponding fault notification information according to the determination result; the fault reminding information comprises equipment fault types. In one embodiment, the description of the specific implementation function may refer to steps S101 to S102.

In one embodiment, the fault determination module 22 includes a first fault determination submodule and/or a second fault determination submodule; the first failure determination submodule is configured to: acquiring the initial temperature of the exhaust port of the compressor when the heat pump type clothes drying equipment is started, and acquiring the temperature change value of the exhaust port of the compressor according to the initial temperature and the temperature of the exhaust port of the compressor at the current moment; calculating the real-time absolute temperature difference value between the temperature of the condenser and the temperature of the exhaust port of the compressor; judging whether the temperature change value is smaller than or equal to a first preset value and whether the real-time temperature difference absolute value is smaller than a second preset value; if the temperature change value is smaller than or equal to a first preset value and the absolute value of the temperature difference is smaller than a second preset value, judging that the heat pump type clothes drying equipment breaks down and outputting first fault reminding information; wherein the equipment fault type in the first fault reminding information is a compressor fault; the second failure determination submodule is configured to perform the following operations: judging whether the temperature of the exhaust port of the compressor at the current moment is greater than a second preset temperature or not; if the temperature of the air outlet of the compressor is higher than the second preset temperature, calculating a real-time temperature difference absolute value between the temperature of the condenser and the temperature of the air outlet of the compressor, and judging whether the real-time temperature difference absolute value is higher than a third preset value or not; if so, judging that the heat pump type clothes drying equipment has a fault and outputting second fault reminding information; wherein the equipment failure type in the second failure notification message is a refrigerant leak. In one embodiment, the description of the specific implementation function may be referred to in step S102.

In one embodiment, the first fault determination submodule is configured to determine whether the initial temperature is less than a first preset temperature; and if so, executing the step of acquiring the temperature change value of the compressor exhaust port according to the initial temperature and the temperature of the compressor exhaust port at the current moment. In one embodiment, the description of the specific implementation function may be referred to in step S102.

In one embodiment, the first failure determination sub-module is configured to execute to obtain a drying run time of the heat pump laundry drying apparatus; judging whether the drying operation time is less than the preset time or not; and if so, executing the step of acquiring the temperature change value of the compressor exhaust port according to the initial temperature and the temperature of the compressor exhaust port at the current moment. In one embodiment, the description of the specific implementation function may be referred to in step S102.

Technical principles, solved technical problems, and produced technical effects of the fault detection device of the heat pump laundry drying apparatus described above are similar for implementing the embodiment of the fault detection method of the heat pump laundry drying apparatus shown in fig. 1, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process and related descriptions of the fault detection device of the heat pump laundry drying apparatus may refer to the contents described in the embodiment of the fault detection method of the heat pump laundry drying apparatus, and are not repeated here.

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.

Furthermore, the invention also provides a storage device. In an embodiment of the storage device according to the present invention, the storage device may be configured to store a program for executing the method of fault detection of the heat pump laundry drying apparatus of the above-described method embodiment, which program may be loaded and run by the processor to implement the method of fault detection of the above-described heat pump laundry drying apparatus. For convenience of explanation, only the parts related to the embodiments of the present invention are shown, and details of the specific techniques are not disclosed. The storage device may be a storage device apparatus formed by including various electronic devices, and optionally, a non-transitory computer-readable storage medium is stored in the embodiment of the present invention.

Furthermore, the invention also provides a control device. In an embodiment of the control device according to the present invention, the control device comprises a processor and a storage device, the storage device may be configured to store a program for executing the method for detecting a malfunction of the heat pump laundry drying apparatus of the above-mentioned method embodiment, and the processor may be configured to execute the program in the storage device, the program including but not limited to the program for executing the method for detecting a malfunction of the heat pump laundry drying apparatus of the above-mentioned method embodiment. For convenience of explanation, only the parts related to the embodiments of the present invention are shown, and details of the specific techniques are not disclosed. The control device may be a control device apparatus formed including various electronic apparatuses.

Further, it should be understood that, since the modules are only configured to illustrate the functional units of the system of the present invention, the corresponding physical devices of the modules may be the processor itself, or a part of software, a part of hardware, or a part of a combination of software and hardware in the processor. Thus, the number of individual modules in the figures is merely illustrative.

Those skilled in the art will appreciate that the various modules in the system may be adaptively split or combined. Such splitting or combining of specific modules does not cause the technical solutions to deviate from the principle of the present invention, and therefore, the technical solutions after splitting or combining will fall within the protection scope of the present invention.

So far, the technical solution of the present invention has been described with reference to one embodiment 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.