CN115751462A - Embedded air conditioner, and control method and device of embedded air conditioner - Google Patents

Abstract

The present invention provides an embedded air conditioner and a control method and device for the embedded air conditioner, wherein the embedded air conditioner includes: a controller, multiple flow channels, temperature sensors and electronic expansion valves; each flow channel Including air inlet and air outlet; the temperature sensor is set correspondingly at each air inlet and each air outlet to detect the air inlet temperature and air outlet temperature; the electronic expansion valve is set at each air inlet; the controller is connected to all temperature sensors , used to control the opening of the electronic expansion valve according to the air inlet temperature and air outlet temperature detected by the temperature sensor. By controlling the flow of refrigerant in each flow channel, the embedded air conditioner makes the outlet air temperature of multiple air outlets as close as possible, which overcomes the large difference in air outlet temperature of each air outlet of the embedded air conditioner in the prior art. , which leads to poor cooling and heating effects, ensures good cooling and heating effects, thereby improving user experience.

Description

Embedded air conditioner, control method and device for embedded air conditioner

technical field

The invention relates to the technical field of air conditioners, in particular to an embedded air conditioner, a control method and a device for the embedded air conditioner.

Background technique

Embedded air conditioner, also known as ceiling or ceiling air conditioner, because this type of air conditioner can save space and look more beautiful after installation, it is widely used in shopping malls, shops and office places.

However, the single refrigerant pipe of the existing embedded air conditioner flows through multiple air outlets, and the temperature of the refrigerant at each air outlet is quite different, especially the difference between the air outlet temperature of the first air outlet and the air outlet temperature of the last air outlet. The biggest problem is that the temperature of the refrigerant in the four-sided air outlet structure is not uniform, which leads to poor cooling and heating effects of the air conditioner and affects the user experience.

Contents of the invention

The invention provides an embedded air conditioner, a control method and a device for the embedded air conditioner, which are used to overcome the defects in the prior art that the air outlet temperature of each air outlet of the embedded air conditioner is greatly different, resulting in poor cooling and heating effects, and to realize Evenly distribute the refrigerant in the embedded air conditioner and improve the user experience.

In one aspect, the present invention provides an embedded air conditioner, comprising: a controller, a plurality of flow channels, a temperature sensor and an electronic expansion valve; each of the flow channels includes an air inlet and an air outlet, and all of the The number of air inlets is less than or equal to the number of all the air outlets; the temperature sensor is correspondingly arranged at each of the air inlets and each of the air outlets to detect the temperature of the air inlet and the temperature of the air outlet; the electronic expansion A valve is arranged at each air inlet; the controller is connected to all the temperature sensors, and is used to control the temperature of the electronic expansion valve according to the temperature of the air inlet and the temperature of the air outlet detected by the temperature sensors. opening.

Further, the air outlet includes a first air outlet, a second air outlet, a third air outlet and a fourth air outlet, and the air inlet includes a first air inlet and a second air inlet; the first air outlet and The second air outlet shares the first air inlet, and the third air outlet and the fourth air outlet share the second air inlet; the first air inlet is connected to the first air outlet and the fourth air outlet respectively. The second air outlet forms a first flow channel, and the second air inlet forms a third flow channel and a fourth flow channel with the third air outlet and the fourth air outlet respectively.

In the second aspect, the present invention also provides a control method based on the above-mentioned embedded air conditioner, including: determining the valve opening adjustment instruction according to the set temperature and the indoor ambient temperature; based on the valve opening adjustment instruction, obtaining each The temperature of the air inlet and the temperature of the air inlet corresponding to the flow channel; according to the temperature of the air outlet and the temperature of the air inlet, the valve opening of the corresponding electronic expansion valve is adjusted to control the operation of the embedded air conditioner.

Further, the determining the valve opening adjustment command according to the set temperature and the indoor ambient temperature includes: obtaining the temperature difference between the set temperature and the indoor ambient temperature; determining that the absolute value of the temperature difference reaches Preset the temperature difference to generate the valve opening adjustment command.

Further, the adjusting the valve opening of the corresponding electronic expansion valve according to the temperature of the air outlet and the temperature of the air inlet includes: acquiring the temperature of the air outlet corresponding to each flow channel and the temperature of the air inlet The temperature difference between the inlet and outlet air outlets; if it is determined that the absolute values of the temperature differences between the inlet and outlet air outlets all reach the set temperature threshold, then the valve opening of the electronic expansion valve remains at the default valve opening.

Further, the adjusting the valve opening of the corresponding electronic expansion valve according to the temperature of the air outlet and the temperature of the air inlet includes: obtaining the temperature of the air outlet corresponding to each of the flow channels and the temperature of the air inlet The temperature difference between the air inlet and outlet of the temperature; determine that only part of the absolute value of the temperature difference between the air inlet and outlet reaches the set temperature threshold; control the valve opening of the electronic expansion valve corresponding to the target air outlet to open the valve at a preset rate, Stop opening the valve until the absolute value of the temperature difference between the air inlet and outlet corresponding to the target air outlet reaches the set temperature threshold; wherein, the absolute value of the temperature difference between the inlet and outlet corresponding to the target air outlet is less than The set temperature threshold.

Further, the controlling the valve opening of the electronic expansion valve corresponding to the target air outlet to open at a preset rate includes: determining that the valve opening of the electronic expansion valve corresponding to the target air outlet reaches the maximum valve opening, and the determined The absolute value of the temperature difference between the air inlet and outlet corresponding to the target air outlet does not reach the set temperature threshold; the compressor is controlled to run at the set frequency until the temperature difference between the air inlet and outlet corresponding to the target air outlet reaches The absolute value reaches the set temperature threshold.

Further, the adjusting the valve opening of the corresponding electronic expansion valve according to the temperature of the air outlet and the temperature of the air inlet includes: obtaining the temperature of the air outlet corresponding to each of the flow channels and the temperature of the air inlet The temperature difference between the air inlet and outlet of the temperature; determine that the absolute value of the temperature difference between the air inlet and outlet is less than the set temperature threshold; control the compressor to run at the preset frequency until the temperature of the air inlet and outlet corresponding to the target number of air outlets The absolute value of the difference reaches the set temperature threshold.

Further, according to the set temperature and the indoor ambient temperature, determining the valve opening adjustment command includes: obtaining the temperature difference between the set temperature and the indoor ambient temperature; determining that the absolute value of the temperature difference is less than the preset temperature difference, the valve opening of the electronic expansion valve is not adjusted.

In the third aspect, the present invention also provides a control device for an embedded air conditioner, including: a command determination module, used to determine the valve opening adjustment command according to the set temperature and the indoor ambient temperature; The valve opening adjustment command is used to obtain the air inlet temperature and air inlet temperature corresponding to each flow channel; the opening adjustment module is used to adjust the valve of the corresponding electronic expansion valve according to the air outlet temperature and the air inlet temperature. opening to control the operation of the embedded air conditioner.

An embedded air conditioner provided by the present invention includes a controller and a plurality of flow channels, each flow channel includes an air inlet and an air outlet, each of which is provided with a temperature sensor, and the temperature sensor is used to detect Air inlet temperature and air outlet temperature, the air inlet is equipped with an electronic expansion valve, and the number of air inlets is less than or equal to the number of air outlets, the controller is connected to the temperature sensor, and is used to detect the air inlet temperature and the air outlet temperature according to the temperature sensor. Control the valve opening of the electronic expansion valve set at the air inlet to control the flow of refrigerant in each flow channel, so that the outlet air temperature of multiple air outlets is as close as possible, which overcomes the problem of embedded air conditioners in the prior art. The large difference in the air outlet temperature of each air outlet leads to the defect of poor cooling and heating effects, which ensures a good cooling and heating effect, thereby improving the user experience.

Description of drawings

In order to illustrate the present invention or the technical solution in the prior art more clearly, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are the present invention. For some embodiments of the invention, those skilled in the art can also obtain other drawings based on these drawings without creative effort.

Fig. 1 is the split schematic diagram of the embedded air conditioner that prior art provides;

Fig. 2 is the structural representation of the embedded air conditioner provided by the present invention;

Fig. 3 is the split flow diagram of the embedded air conditioner provided by the present invention;

Fig. 4 is a schematic flow chart of the control method of the embedded air conditioner provided by the present invention;

Fig. 5 is a structural schematic diagram of the control device of the embedded air conditioner provided by the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that the single refrigerant pipe of the existing embedded air conditioner flows through multiple air outlets, and the temperature of the refrigerant at each air outlet is quite different, especially the temperature of the first air outlet is different from that of the last air outlet. The difference in air temperature is the largest, and the temperature of the refrigerant in the four-sided air outlet structure is uneven, resulting in poor cooling and heating effects of the air conditioner and affecting the user experience.

Specifically, taking a relatively common ceiling-mounted air conditioner with four air outlets as an example, FIG. 1 shows a schematic flow distribution diagram of an embedded air conditioner provided in the prior art. As shown in Figure 1, the embedded air conditioner includes an internal fan, a fan, and four air outlets, wherein the "circle" on the upper left of Figure 1 indicates an air inlet, and a single flow channel is formed clockwise from the air inlet.

It is easy to understand that due to the long single-channel process of the existing embedded air conditioner, the pressure loss is large, the cooling and heating effect is poor, and the single flow channel flows through four air outlets, the temperature of these four air outlets With the progress of indoor heat exchange, the temperature of the air outlet gradually rises during heating, and gradually decreases during cooling.

Considering this, an embodiment of the present invention provides an embedded air conditioner, specifically, Fig. 2 shows a schematic structural diagram of the embedded air conditioner provided by the present invention.

As shown in Figure 2, the embedded air conditioner includes: a controller 210, a plurality of flow channels 220, a temperature sensor 223 and an electronic expansion valve 224; each flow channel 220 includes an air inlet 221 and an air outlet 222, and The number of all air inlets 221 is less than or equal to the number of all air outlets 222; the temperature sensor 223 is correspondingly arranged on each air inlet 221 and each air outlet 222, and is used to detect the air inlet temperature and the air outlet temperature; the electronic expansion valve 224 is arranged on Each air inlet; the controller 210 is connected with all the temperature sensors 223 for controlling the opening degree of the electronic expansion valve 224 according to the air inlet temperature and the air outlet temperature detected by the temperature sensors 223 .

It can be understood that, unlike existing embedded air conditioners, in the embedded air conditioner provided by the embodiment of the present invention, each air outlet has a separate flow channel 220, that is, a plurality of flow channels The "multiple" of 220 is consistent with the number of air outlets 222, and an electronic expansion valve is set at the air inlet 221 corresponding to each air outlet 222, so as to control the refrigerant through the corresponding air inlet temperature and air outlet temperature flow to ensure good cooling and heating effects.

Specifically, the embedded air conditioner includes a controller 210 and a plurality of flow passages 220, wherein the flow passage 220 includes an air inlet 221 and an air outlet 222, and each air inlet 221 and the corresponding air outlet 222 form a separate flow The air passage 220, the air inlet 221 and the air outlet 222 are all equipped with temperature sensors, so that the air inlet temperature of each air inlet 221 and the air outlet temperature of each air outlet 222 can be obtained in real time.

It should be noted that the number of air inlets 221 can be smaller than the number of air outlets 222 or equal to the number of air outlets 222 , this is to ensure that each air outlet 222 can have a separate flow channel 220 . When the quantity of air inlet 221 is less than the quantity of air outlet 222, comprise a plurality of air outlets 222 and share the same air inlet 221; correspond.

At the same time, each air inlet 221 is also provided with an electronic expansion valve, and by adjusting the opening of the electronic expansion valve, the flow rate of the refrigerant in the corresponding flow channel can be controlled.

There is a connection between the controller 210 and a plurality of temperature sensors, and the air inlet temperature of each air inlet 221 and the air outlet temperature of each air outlet 222 can be obtained from the plurality of temperature sensors, so that according to the obtained air inlet temperature and The air outlet temperature controls the valve opening of the corresponding electronic expansion valve.

In a specific embodiment, the embedded air conditioner includes four flow channels 220 , specifically including two air inlets 221 and four air outlets 222 . Fig. 3 shows a schematic flow diagram of the embedded air conditioner provided by the present invention.

As shown in Figure 3, the air outlet 222 includes a first air outlet, a second air outlet, a third air outlet and a fourth air outlet, and the air inlet 221 includes a first air inlet and a second air inlet; The second air outlet shares the first air inlet, the third air outlet and the fourth air outlet share the second air inlet; the first air inlet forms the first flow channel with the first air outlet and the second air outlet respectively, and the second air inlet respectively A third flow channel and a fourth flow channel are formed with the third air outlet and the fourth air outlet.

As another example, in another specific embodiment, the embedded air conditioner includes four flow channels 220, specifically including three air inlets 221 and four air outlets 222, wherein two air outlets 222 share one inlet The air outlets 221 respectively form two flow channels 220 , while the other two air outlets 222 respectively correspond to independent air inlets 221 and also form two flow channels 220 respectively.

In this embodiment, the embedded air conditioner includes a controller 210 and a plurality of flow channels 220, each flow channel 220 includes an air inlet 221 and an air outlet 222, and the air inlet 221 and the air outlet 222 are each provided with a temperature sensor 223 , the temperature sensor 223 is used to detect the air inlet temperature and the air outlet temperature, the air inlet 221 is provided with an electronic expansion valve 224, and the number of the air inlet 221 is less than or equal to the number of the air outlet 222, the controller 210 is connected with the temperature sensor 223, Based on the air inlet temperature and air outlet temperature detected by the temperature sensor 223, the valve opening of the electronic expansion valve 224 provided at the air inlet 221 is controlled to control the flow of refrigerant in each flow channel 220, so that multiple air outlets 222 The temperature of the air outlet is as close as possible, which overcomes the defect that the air outlet temperature of each air outlet of the embedded air conditioner in the prior art varies greatly, resulting in poor cooling and heating effects, and ensures a good cooling and heating effect, thus improving the user experience. sense of experience.

At the same time, the embodiment of the present invention also provides a control method for an embedded air conditioner. Specifically, FIG. 4 shows a schematic flowchart of the control method for an embedded air conditioner provided by the present invention. As shown in Figure 4, the method includes:

S410. Determine the valve opening adjustment command according to the set temperature and the indoor ambient temperature.

It can be understood that before adjusting the electronic expansion valve, it is necessary to confirm whether it is necessary to adjust the valve opening of the electronic expansion valve. In this embodiment, the necessary conditions are the set temperature and the indoor ambient temperature.

The set temperature is the temperature value preset by the user according to the actual needs. Generally speaking, the set temperature will change with the change of the air conditioner's operating mode, and the set temperature value will be different under different operating modes. For example, the set temperature in heating mode must be higher than the set temperature in cooling mode.

The indoor ambient temperature is the current indoor relative temperature, which can be obtained by a temperature sensor. Specifically, the temperature sensor can be installed on the embedded air conditioner or at other places in the room, which is not specifically limited here.

According to the set temperature and the indoor ambient temperature, the valve opening adjustment command is determined. Specifically, whether to issue the valve opening adjustment command can be determined by the temperature difference between the set temperature and the indoor ambient temperature, that is, when the set temperature When the temperature difference with the indoor ambient temperature is within the set temperature range, it is determined to issue a valve opening adjustment command, otherwise, the valve opening of the electronic expansion valve does not need to be adjusted.

Wherein, the valve opening adjustment command includes information such as which electronic expansion valve is to be adjusted and how to adjust it.

S420. Acquire the air inlet temperature and the air inlet temperature corresponding to each flow channel based on the valve opening adjustment command.

On the basis of determining the valve opening adjustment instruction according to the set temperature and the indoor ambient temperature in the above step S410, according to the valve opening adjustment instruction, the air inlet temperature and the air inlet temperature corresponding to each flow channel are obtained.

It is easy to understand that if the valve opening adjustment command is determined to be issued, it means that the current cooling or heating effect of the air conditioner has not achieved a good effect. At this time, the valve opening of the electronic expansion valve needs to be adjusted. The prerequisite for adjusting the valve opening of the corresponding electronic expansion valve is the air outlet temperature and the air inlet temperature.

Wherein, the temperature of the air inlet is obtained by a temperature sensor provided at the air inlet, and the temperature of the air outlet is obtained by a temperature sensor provided at the air outlet.

S430, adjusting the valve opening of the corresponding electronic expansion valve according to the air outlet temperature and the air inlet temperature, so as to control the operation of the embedded air conditioner.

Gradually, on the basis of obtaining the air inlet temperature and air outlet temperature corresponding to each flow channel based on the valve opening adjustment command in step S420, adjust the valve opening of the corresponding electronic expansion valve according to the air outlet temperature and air inlet temperature, To control the operation of the built-in air conditioner.

According to the air outlet temperature and the air inlet temperature, the valve opening of the corresponding electronic expansion valve is adjusted. Specifically, the specific instruction for adjusting the electronic expansion valve can be determined according to the difference between the air outlet temperature and the air inlet temperature.

It should be noted that, in this embodiment, there are multiple air outlet temperatures and air inlet temperatures, and each air inlet temperature has a corresponding air outlet temperature, and each air outlet temperature also has a corresponding electronic expansion valve.

That is to say, according to the temperature of the air outlet and the temperature of the air inlet, the valve opening of the corresponding electronic expansion valve is adjusted. Specifically, it can be the valve opening adjustment of all the electronic expansion valves, or it can be the adjustment of some of the electronic expansion valves, depending on each The temperature of the air inlet corresponding to the air inlet and the temperature of the corresponding air outlet depend on it.

In this embodiment, the valve opening adjustment instruction is determined according to the set temperature and the indoor ambient temperature, and based on the valve opening adjustment instruction, the air inlet temperature and air outlet temperature corresponding to each flow channel are obtained, and according to the acquired The air inlet temperature and air outlet temperature of the air conditioner can be adjusted to adjust the valve opening of the corresponding electronic expansion valve to control the operation of the embedded air conditioner. By adjusting the valve opening of the electronic expansion valve, the method can control the flow rate of the refrigerant in each flow channel, so that the air temperature of multiple air outlets can be as close as possible, which overcomes the problems of embedded air conditioners in the prior art. The large difference in air temperature at the air outlet leads to poor cooling and heating effects, which ensures a good cooling and heating effect and improves user experience.

On the basis of the above embodiments, further, according to the set temperature and the indoor ambient temperature, determining the valve opening adjustment instruction includes: acquiring the temperature difference between the set temperature and the indoor ambient temperature; determining the absolute value of the temperature difference to The temperature difference is preset to generate a valve opening adjustment instruction.

It can be understood that, according to the set temperature and the indoor ambient temperature, the valve opening adjustment command is determined. Specifically, firstly, the temperature difference between the set temperature and the indoor ambient temperature is obtained, and then it is determined whether the absolute value of the temperature difference has reached Preset the temperature difference, so as to determine whether to generate a valve opening adjustment command.

When the absolute value of the temperature difference is greater than or equal to the preset temperature difference, a valve opening adjustment command will be generated; otherwise, if the absolute value of the temperature difference is less than the preset temperature difference, the electronic expansion valve will not be adjusted .

In a specific embodiment, the air conditioner operates in cooling mode, the set temperature is 20 degrees Celsius, and the detected indoor ambient temperature is 25 degrees Celsius, and the temperature difference between the set temperature and the indoor ambient temperature is -5 degrees Celsius. , the absolute value of the temperature difference is 5 degrees Celsius, which is greater than the preset temperature difference of 3 degrees Celsius. Therefore, to generate a valve opening adjustment command, it is necessary to adjust the valve opening of the corresponding electronic expansion valve to optimize the valve opening .

In another specific embodiment, the air conditioner operates in heating mode, the set temperature is 27 degrees Celsius, and the detected indoor ambient temperature is 25 degrees Celsius, and the temperature difference between the set temperature and the indoor ambient temperature is 2 degrees Celsius, the absolute value of the temperature difference is 2 degrees Celsius, which is less than the preset temperature difference, ie 5 degrees Celsius, so that it is not necessary to adjust the valve opening of the corresponding electronic expansion valve.

Wherein, the preset temperature difference can be set according to actual conditions or needs, for example, in a specific embodiment, the preset temperature difference is 3 degrees Celsius.

In this embodiment, by obtaining the temperature difference between the set temperature and the indoor ambient temperature, and when it is determined that the absolute value of the temperature difference reaches the preset temperature difference, a valve opening adjustment instruction is generated; otherwise, The valve opening of the corresponding electronic expansion valve is not adjusted, so as to realize the preliminary judgment of the current indoor temperature adjustment situation.

On the basis of the above embodiments, further, according to the temperature of the air outlet and the temperature of the air inlet, adjusting the valve opening of the corresponding electronic expansion valve includes: obtaining the temperature of the air outlet corresponding to each flow path and the temperature of the air inlet and outlet of the air inlet and outlet Temperature difference: According to the comparison between the absolute value of the temperature difference between the air inlet and outlet and the set temperature threshold, the valve opening adjustment mode of the electronic expansion valve is determined.

In a specific embodiment, if it is determined that the absolute values of the temperature differences between the inlet and outlet outlets all reach the set temperature threshold, then the valve opening of the electronic expansion valve remains a default valve opening.

It can be understood that, on the basis of generating the valve opening adjustment instruction, the valve opening of the corresponding electronic expansion valve is adjusted according to the air outlet temperature and the air inlet temperature. Specifically, firstly, the air outlet temperature corresponding to each flow channel is obtained Then determine whether the absolute values of the obtained temperature differences between the air inlet and outlet reach the set temperature threshold. If they all reach the temperature threshold, the current valve opening of the electronic expansion valve will not be adjusted. Control the electronic expansion valve to maintain the default valve opening.

Wherein, the set temperature threshold can be set according to the actual situation, for example, the set temperature threshold is 13 degrees Celsius.

It should be noted that different types of electronic expansion valves have different default valve openings. For example, the default valve opening degree of the electronic expansion valve in this embodiment is 240 degrees, and the maximum valve opening degree is 480 degrees.

In addition to the above-mentioned situation where the absolute values of the temperature differences of the plurality of air inlets and outlets all reach the set temperature threshold, in another specific embodiment, it is determined that only part of the absolute values of the temperature differences of the plurality of air inlets and outlets reaches the set temperature threshold; Control the valve opening of the electronic expansion valve corresponding to the target air outlet to open the valve at a preset rate until the absolute value of the temperature difference between the inlet and outlet corresponding to the target air outlet reaches the set temperature threshold, and stop opening the valve; wherein, the target air outlet corresponds to The absolute value of the air inlet and outlet temperature difference is less than the set temperature threshold.

It can be understood that, in the case of determining that the absolute value of the temperature difference between the inlet and outlet of multiple air outlets only partially reaches the set temperature threshold, determine the air outlet corresponding to the absolute value of the temperature difference between the inlet and outlet that does not reach the set temperature threshold. , and use this air outlet as the target air outlet.

After determining the target air outlet, control the valve opening of the electronic expansion valve corresponding to the target air outlet to open the valve at a preset rate until the absolute value of the temperature difference between the inlet and outlet corresponding to the target air outlet reaches the set temperature threshold, and then stop Valve opening operation, that is, the adjustment of the valve opening of the corresponding electronic expansion valve is stopped until the absolute values of the temperature differences of the multiple air inlets and outlets reach the set temperature threshold.

Among them, the preset rate can be set according to the actual situation. For example, if the preset frequency is set to 10 steps every 30 seconds, that is, the electronic expansion valve is controlled to open the valve at 10 steps every 30 seconds until the absolute value of the corresponding temperature difference between the inlet and outlet Values greater than 13 degrees Celsius.

In addition, in yet another specific embodiment, it is determined that the valve opening of the electronic expansion valve corresponding to the target air outlet reaches the maximum valve opening, and the absolute value of the temperature difference between the inlet and outlet corresponding to the target air outlet does not reach the set temperature threshold ; Control the compressor to run at the set frequency until the absolute value of the temperature difference between the air inlet and outlet corresponding to the target air outlet reaches the set temperature threshold.

It can be understood that when the temperature difference between the air inlet and outlet corresponding to the target air outlet is less than the set temperature threshold, the valve opening of the corresponding electronic expansion valve will be adjusted at a preset rate. If the valve opening of the electronic expansion valve is adjusted to the maximum valve opening, but the absolute value of the temperature difference between the air inlet and outlet corresponding to the target air outlet has not yet reached the set temperature threshold, then at this time, the temperature difference between the air inlet and outlet corresponding to the target air outlet can be adjusted by controlling the operating frequency of the compressor. Until the absolute value of the temperature difference between the air inlet and outlet reaches the set temperature threshold, the compressor resumes the operating frequency before adjustment.

Among them, the set frequency can be set according to the actual situation. For example, if the set frequency is set to 1.5 Hz every 10 seconds, the compressor is controlled to increase the frequency at a frequency of 1.5 Hz every 10 seconds until the temperature difference between the air inlet and outlet reaches The absolute value reaches the set temperature threshold.

In addition to the above-mentioned situation where the absolute values of the temperature differences between the multiple air inlets and outlets all reach or partially reach the set temperature threshold, in yet another specific embodiment, it is determined that the absolute values of the temperature differences between the multiple air inlets and outlets are all less than the set temperature threshold ; Control the compressor to run at a preset frequency until the absolute value of the temperature difference between the air inlet and outlet corresponding to the target number of air outlets reaches the set temperature threshold.

It can be understood that when it is determined that the absolute values of the temperature differences between the air inlet and outlet are all less than the set temperature threshold, the compressor is directly controlled to run at the set frequency until the temperature of the air inlet and outlet corresponding to the target number of air outlets Until the absolute value of the difference reaches the set temperature threshold, the compressor resumes the operating frequency before adjustment.

Among them, the preset frequency and the target number can be set according to the actual situation, for example, if the preset frequency is set to 2 Hz every 10 seconds, that is, the compressor is controlled to increase the frequency at a frequency of 2 Hz every 10 seconds until more than two When the absolute value of the temperature difference between the air inlet and outlet reaches the set temperature threshold, the compressor resumes the operating frequency before adjustment.

After the absolute value of the temperature difference between the air inlet and outlet corresponding to the target number of air outlets reaches the set temperature threshold, the comparison result between the absolute value of the temperature difference between the air inlet and outlet and the set temperature threshold is judged again. In the described situation, further determine how to adjust the electronic expansion valve.

In this embodiment, the valve opening of the corresponding electronic expansion valve is adjusted according to the comparison result between the absolute value of the temperature difference between the air inlet and outlet and the set temperature threshold, so that the absolute value of the temperature difference between the air inlet and outlet Both reach the set temperature threshold, which overcomes the defect of poor cooling and heating effects caused by the large difference in the air outlet temperature of each air outlet of the embedded air conditioner in the prior art, ensures a good cooling and heating effect, and thus improves the user experience feel.

Fig. 5 shows a schematic structural view of the control device of the embedded air conditioner provided by the present invention. As shown in Figure 5, the device includes: a command determination module 510, used to determine the valve opening adjustment command according to the set temperature and the indoor ambient temperature; a temperature acquisition module 520, used to obtain the valve opening adjustment command based on the valve opening The air inlet temperature and the air inlet temperature corresponding to each flow channel; the opening adjustment module 530 is used to adjust the valve opening of the corresponding electronic expansion valve according to the air outlet temperature and the air inlet temperature, so as to control the The built-in air conditioner is running.

In this embodiment, the instruction determination module 510 determines the valve opening adjustment instruction according to the set temperature and the indoor ambient temperature, and the temperature acquisition module 520 obtains the air inlet temperature and temperature corresponding to each flow channel based on the valve opening adjustment instruction. The air outlet temperature and opening adjustment module 530 adjusts the valve opening of the corresponding electronic expansion valve according to the obtained air inlet temperature and air outlet temperature, so as to control the operation of the embedded air conditioner. By adjusting the valve opening of the electronic expansion valve, the device can control the flow of refrigerant in each flow channel, so that the outlet air temperature of multiple air outlets can be as close as possible, which overcomes the problems of embedded air conditioners in the prior art. The large difference in air temperature at the air outlet leads to poor cooling and heating effects, which ensures a good cooling and heating effect and improves user experience.

The control device for the embedded air conditioner provided by the embodiment of the present invention and the control method for the embedded air conditioner described above can be referred to each other correspondingly, and will not be repeated here.

The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative efforts.

Through the above description of the implementations, those skilled in the art can clearly understand that each implementation can be implemented by means of software plus a necessary general hardware platform, and of course also by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic discs, optical discs, etc., including several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) execute the methods described in various embodiments or some parts of the embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. A built-in air conditioner, characterized in that, comprising: Controller, multiple flow channels, temperature sensor and electronic expansion valve; Each of the flow channels includes an air inlet and an air outlet, and the number of all the air inlets is less than or equal to the number of all the air outlets; The temperature sensor is correspondingly arranged at each of the air inlets and each of the air outlets for detecting the temperature of the air inlet and the temperature of the air outlet; The electronic expansion valve is arranged at each of the air inlets; The controller is connected with all the temperature sensors, and is used for controlling the opening degree of the electronic expansion valve according to the temperature of the air inlet and the temperature of the air outlet detected by the temperature sensors. 2. The embedded air conditioner according to claim 1, wherein the air outlet includes a first air outlet, a second air outlet, a third air outlet and a fourth air outlet, and the air inlet includes a first air outlet. Air inlet and second air inlet; The first air outlet shares the first air inlet with the second air outlet, and the third air outlet and the fourth air outlet share the second air inlet; The first air inlet forms a first flow path with the first air outlet and the second air outlet respectively, and the second air inlet forms a first flow channel with the third air outlet and the fourth air outlet respectively. Three flow channels and a fourth flow channel. 3. A control method based on the embedded air conditioner according to claim 1 or 2, characterized in that it comprises: According to the set temperature and the indoor ambient temperature, determine the valve opening adjustment command; Obtaining the air inlet temperature and the air inlet temperature corresponding to each of the flow channels based on the valve opening adjustment instruction; According to the temperature of the air outlet and the temperature of the air inlet, the valve opening of the corresponding electronic expansion valve is adjusted to control the operation of the embedded air conditioner. 4. The control method of the embedded air conditioner according to claim 3, wherein the determining the valve opening adjustment command according to the set temperature and the indoor ambient temperature comprises: Acquiring the temperature difference between the set temperature and the indoor ambient temperature; It is determined that the absolute value of the temperature difference reaches a preset temperature difference, and the valve opening adjustment command is generated. 5. The control method of the embedded air conditioner according to claim 3, wherein the adjusting the valve opening of the corresponding electronic expansion valve according to the temperature of the air outlet and the temperature of the air inlet comprises: Acquiring the temperature difference between the air outlet temperature and the air inlet temperature corresponding to each flow channel; If it is determined that the absolute values of the temperature differences between the inlet and outlet outlets all reach the set temperature threshold, then the valve opening of the electronic expansion valve remains at a default valve opening. 6. The control method of the embedded air conditioner according to claim 3, wherein the adjusting the valve opening of the corresponding electronic expansion valve according to the temperature of the air outlet and the temperature of the air inlet comprises: Acquiring the temperature difference between the air outlet temperature and the air inlet temperature corresponding to each of the flow channels; Determining that only a part of the absolute values of the temperature differences between the air inlet and outlet reaches the set temperature threshold; Control the valve opening of the electronic expansion valve corresponding to the target air outlet to open the valve at a preset rate until the absolute value of the temperature difference between the air inlet and outlet corresponding to the target air outlet reaches the set temperature threshold, and stop opening the valve; Wherein, the absolute value of the air inlet and outlet temperature difference corresponding to the target air outlet is smaller than the set temperature threshold. 7. The control method of the embedded air conditioner according to claim 6, wherein the valve opening of the electronic expansion valve corresponding to the control target air outlet is opened at a preset rate, comprising: It is determined that the valve opening of the electronic expansion valve corresponding to the target air outlet reaches the maximum valve opening, and the absolute value of the temperature difference between the air inlet and outlet corresponding to the target air outlet does not reach the set temperature threshold; The compressor is controlled to run at a set frequency until the absolute value of the temperature difference between the air inlet and outlet corresponding to the target air outlet reaches the set temperature threshold. 8. The control method of the embedded air conditioner according to any one of claims 3 to 7, characterized in that, according to the temperature of the air outlet and the temperature of the air inlet, the valve opening of the corresponding electronic expansion valve is adjusted, include: Acquiring the temperature difference between the air outlet temperature and the air inlet temperature corresponding to each of the flow channels; It is determined that the absolute values of the temperature differences between the inlet and outlet air outlets are all less than the set temperature threshold; The compressor is controlled to run at a preset frequency until the absolute value of the temperature difference between the air inlet and outlet corresponding to the target number of air outlets reaches the set temperature threshold. 9. The control method of the embedded air conditioner according to claim 4, wherein the determining the valve opening adjustment instruction according to the set temperature and the indoor ambient temperature comprises: Acquiring the temperature difference between the set temperature and the indoor ambient temperature; If it is determined that the absolute value of the temperature difference is smaller than the preset temperature difference, then the valve opening of the electronic expansion valve is not adjusted. 10. A control device for an embedded air conditioner, comprising: An instruction determination module is used to determine the valve opening adjustment instruction according to the set temperature and the indoor ambient temperature; A temperature acquisition module, configured to acquire the air inlet temperature and the air inlet temperature corresponding to each flow channel based on the valve opening adjustment instruction; The opening adjustment module is used to adjust the valve opening of the corresponding electronic expansion valve according to the temperature of the air outlet and the temperature of the air inlet, so as to control the operation of the embedded air conditioner.

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