阅读说明：本技术 空调的控制方法及装置、空调系统 (Air conditioner control method and device and air conditioner system ) 是由 周卫华 寇芷薇 罗建飞 黄童毅 梁相之 姚宏锋 于 2020-04-20 设计创作，主要内容包括：本发明提供了一种空调的控制方法及装置、空调系统,其中,该方法包括：获取空调系统在第一制冷模式下的状态信息；根据所述状态信息触发第二制冷模式的预备状态,其中,所述第二制冷模式采用磁悬浮离心压缩机制冷；在所述预备状态下,将所述离心压缩机的轴承控制为浮轴状态。通过本发明,解决了相关技术在空调系统中启动离心压缩机时间过长的技术问题,可以实现制冷机组的快速切换,并恢复供冷,避免室内温度在短时间内急聚上升。(The invention provides a control method and device of an air conditioner and an air conditioning system, wherein the method comprises the following steps: acquiring state information of the air conditioning system in a first refrigeration mode; triggering a preparation state of a second refrigeration mode according to the state information, wherein the second refrigeration mode adopts a magnetic suspension centrifugal compressor for refrigeration; in the preparatory state, the bearing of the centrifugal compressor is controlled to be in a floating shaft state. The invention solves the technical problem of overlong time for starting the centrifugal compressor in the air conditioning system in the related art, can realize the quick switching of the refrigerating unit, recovers the cooling and avoids the sudden rise of the indoor temperature in a short time.)

1. A control method of an air conditioner, comprising:

acquiring state information of the air conditioning system in a first refrigeration mode;

triggering a preparation state of a second refrigeration mode according to the state information, wherein the second refrigeration mode adopts a magnetic suspension centrifugal compressor for refrigeration;

in the preparatory state, the bearing of the centrifugal compressor is controlled to be in a floating shaft state.

2. The method of claim 1, wherein the first cooling mode is a natural water cooling mode, and the obtaining the status information of the air conditioning system in the first cooling mode comprises at least one of:

detecting a first water inlet temperature and a first water outlet temperature of cooling water, wherein the first water inlet temperature is the temperature of a pipeline flowing to a water chilling unit by a cooling tower, and the first water outlet temperature is the temperature of the pipeline flowing to the cooling tower by the water chilling unit;

detecting a second water inlet temperature and a second water outlet temperature of the chilled water, wherein the second water inlet temperature is the temperature of a pipeline flowing to a refrigeration area of the water chilling unit, and the second water outlet temperature is the temperature of the pipeline flowing to the water chilling unit in the refrigeration area;

detecting an outdoor ambient temperature of the air conditioning system.

3. The method of claim 2, wherein triggering a ready state of a second cooling mode based on the status information comprises:

calculating the temperature difference of the chilled water according to the second water inlet temperature and the second water outlet temperature;

and if the temperature difference of the chilled water is less than or equal to a first threshold and lasts for a preset time, triggering a preparation state of a second refrigeration mode.

4. The method of claim 2, wherein triggering a ready state of a second cooling mode based on the status information comprises:

judging whether the outdoor environment temperature is less than or equal to a second threshold or not, wherein the first inlet water temperature is greater than a third threshold;

and whether the outdoor environment temperature is less than or equal to a second threshold or not, and the first inlet water temperature is greater than a third threshold, triggering a preparation state of a second refrigeration mode.

5. The method of claim 2, wherein triggering a ready state of a second cooling mode based on the status information comprises:

calculating a first temperature difference between the first outlet water temperature and a first target temperature, and/or calculating a second temperature difference between the second outlet water temperature and a second target temperature;

and if the first temperature difference and/or the second temperature difference are/is larger than a fourth threshold, triggering a preparation state of a second refrigeration mode.

6. The method of claim 1, wherein after controlling the bearings of the centrifugal compressor to a floating shaft condition, the method further comprises:

continuously detecting the indoor environment temperature of the air conditioning system;

calculating the temperature rise rate of the indoor environment according to the indoor environment temperature;

and if the heating rate is greater than a fifth threshold, switching the first refrigeration mode to the second refrigeration mode.

7. A control device of an air conditioner, characterized by comprising:

the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the state information of the air conditioning system in a first refrigeration mode;

the triggering module is used for triggering the preparation state of a second refrigeration mode according to the state information, wherein the second refrigeration mode adopts a magnetic suspension centrifugal compressor for refrigeration;

and the control module is used for controlling the bearing of the centrifugal compressor to be in a floating shaft state in the preparation state.

8. An air conditioning system, characterized in that it comprises a device according to claim 7.

9. A storage medium, in which a computer program is stored, wherein the computer program is arranged to perform the method of any of claims 1 to 6 when executed.

10. An electronic device comprising a memory and a processor, wherein the memory has stored therein a computer program, and wherein the processor is arranged to execute the computer program to perform the method of any of claims 1 to 6.

Technical Field

The invention relates to the field of automation, in particular to a control method and device of an air conditioner and an air conditioning system.

Background

Disclosure of Invention

The embodiment of the invention provides a control method and device of an air conditioner and an air conditioning system, and aims to solve the technical problem that the time for starting a centrifugal compressor in the air conditioning system is too long in the related art.

According to an embodiment of the present invention, there is provided a control method of an air conditioner including: acquiring state information of the air conditioning system in a first refrigeration mode; triggering a preparation state of a second refrigeration mode according to the state information, wherein the second refrigeration mode adopts a magnetic suspension centrifugal compressor for refrigeration; in the preparatory state, the bearing of the centrifugal compressor is controlled to be in a floating shaft state.

Optionally, the first cooling mode is a natural water cooling mode, and the obtaining of the state information of the air conditioning system in the first cooling mode includes at least one of: detecting a first water inlet temperature and a first water outlet temperature of cooling water, wherein the first water inlet temperature is the temperature of a pipeline flowing to a water chilling unit by a cooling tower, and the first water outlet temperature is the temperature of the pipeline flowing to the cooling tower by the water chilling unit; detecting a second water inlet temperature and a second water outlet temperature of the chilled water, wherein the second water inlet temperature is the temperature of a pipeline flowing to a refrigeration area of the water chilling unit, and the second water outlet temperature is the temperature of the pipeline flowing to the water chilling unit in the refrigeration area; detecting an outdoor ambient temperature of the air conditioning system.

Optionally, the triggering the preparation state of the second cooling mode according to the state information includes: calculating the temperature difference of the chilled water according to the second water inlet temperature and the second water outlet temperature; and if the temperature difference of the chilled water is less than or equal to a first threshold and lasts for a preset time, triggering a preparation state of a second refrigeration mode.

Optionally, the triggering the preparation state of the second cooling mode according to the state information includes: judging whether the outdoor environment temperature is less than or equal to a second threshold or not, wherein the first inlet water temperature is greater than a third threshold; and whether the outdoor environment temperature is less than or equal to a second threshold or not, and the first inlet water temperature is greater than a third threshold, triggering a preparation state of a second refrigeration mode.

Optionally, the triggering the preparation state of the second cooling mode according to the state information includes: calculating a first temperature difference between the first outlet water temperature and a first target temperature, and/or calculating a second temperature difference between the second outlet water temperature and a second target temperature; and if the first temperature difference and/or the second temperature difference are/is larger than a fourth threshold, triggering a preparation state of a second refrigeration mode.

Optionally, after controlling the bearing of the centrifugal compressor to a floating shaft state, the method further comprises: continuously detecting the indoor environment temperature of the air conditioning system; calculating the temperature rise rate of the indoor environment according to the indoor environment temperature; and if the heating rate is greater than a fifth threshold, switching the first refrigeration mode to the second refrigeration mode.

According to another embodiment of the present invention, there is provided a control apparatus of an air conditioner including: the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the state information of the air conditioning system in a first refrigeration mode; the triggering module is used for triggering the preparation state of a second refrigeration mode according to the state information, wherein the second refrigeration mode adopts a magnetic suspension centrifugal compressor for refrigeration; and the control module is used for controlling the bearing of the centrifugal compressor to be in a floating shaft state in the preparation state.

Optionally, the first refrigeration mode is a natural water cooling mode, and the obtaining module includes at least one of: the system comprises a first checking unit, a second checking unit and a control unit, wherein the first checking unit is used for detecting a first water inlet temperature and a first water outlet temperature of cooling water, the first water inlet temperature is the temperature of a pipeline flowing from a cooling tower to a water chilling unit, and the first water outlet temperature is the temperature of the pipeline flowing from the water chilling unit to the cooling tower; the second checking unit is used for detecting a second water inlet temperature and a second water outlet temperature of the chilled water, wherein the second water inlet temperature is the temperature of a pipeline flowing to the refrigerating area of the water chilling unit, and the second water outlet temperature is the temperature of the pipeline flowing to the water chilling unit of the refrigerating area; and the third checking unit is used for detecting the outdoor environment temperature of the air conditioning system.

Optionally, the triggering module includes: the first calculating unit is used for calculating the temperature difference of the chilled water according to the second water inlet temperature and the second water outlet temperature; and the first trigger unit is used for triggering the preparation state of the second refrigeration mode if the temperature difference of the chilled water is less than or equal to a first threshold and lasts for a preset time.

Optionally, the triggering module includes: the judging unit is used for judging whether the outdoor environment temperature is less than or equal to a second threshold or not, and the first inlet water temperature is greater than a third threshold; and the second trigger unit is used for triggering the preparation state of the second refrigeration mode if the outdoor environment temperature is less than or equal to a second threshold and the first inlet water temperature is greater than a third threshold.

Optionally, the triggering module includes: the second calculating unit is used for calculating a first temperature difference between the first outlet water temperature and a first target temperature and/or calculating a second temperature difference between the second outlet water temperature and a second target temperature; and the third triggering unit is used for triggering the preparation state of the second refrigeration mode if the first temperature difference and/or the second temperature difference is/are larger than a fourth threshold.

Optionally, the apparatus further comprises: the detection module is used for continuously detecting the indoor environment temperature of the air conditioning system after the control module controls the bearing of the centrifugal compressor to be in a floating shaft state; the calculation module is used for calculating the temperature rise rate of the indoor environment according to the indoor environment temperature; and the switching module is used for switching the first refrigeration mode to the second refrigeration mode if the heating rate is greater than a fifth threshold.

According to yet another embodiment of the present invention, there is also provided an air conditioning system including the device as described in the above embodiment.

According to a further embodiment of the present invention, there is also provided a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps in any of the apparatus embodiments described above when executed.

According to yet another embodiment of the present invention, there is also provided an electronic device, including a memory in which a computer program is stored and a processor configured to execute the computer program to perform the steps in any of the above method embodiments.

According to the invention, the state information of the air conditioning system in the first refrigeration mode is obtained, then the preparation state of the second refrigeration mode is triggered according to the state information, the bearing of the centrifugal compressor is controlled to be in the floating shaft state in the preparation state, and the magnetic suspension centrifugal compressor can be quickly started by controlling the bearing to be in the floating shaft state in advance before the magnetic suspension centrifugal compressor is started, so that the technical problem that the centrifugal compressor is started in the air conditioning system for too long time in the related art is solved, the quick switching of the refrigeration unit can be realized, the cooling is recovered, and the indoor temperature is prevented from being rapidly increased in a short time.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a block diagram of a control apparatus of an air conditioner according to an embodiment of the present invention;

fig. 2 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the natural water cooling mode of the embodiment of the present invention;

FIG. 4 is a control flow diagram of the present invention applied in a computer room environment;

fig. 5 is a block diagram of a control device of an air conditioner according to an embodiment of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.