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CN-112944483-B - Air conditioner indoor unit, control method thereof and air conditioner unit

CN112944483BCN 112944483 BCN112944483 BCN 112944483BCN-112944483-B

Abstract

The invention discloses an air conditioner indoor unit, a control method thereof and an air conditioner unit, wherein the air conditioner indoor unit comprises an original air conditioner indoor unit, at least comprises a first main board, a control assembly and a control assembly, wherein the first main board is in a power-off state, the control assembly is positioned outside the original air conditioner indoor unit and comprises a second main board, a second temperature sensing bulb and a second throttling element, and the second main board is connected with the second temperature sensing bulb and the second throttling element and is used for adjusting the opening of the second throttling element according to the temperature detected by the second temperature sensing bulb. The invention solves the problem that the external machine of the multi-split air conditioner is incompatible with the internal machines of different brands in the process of updating the multi-split air conditioner in the prior art, and greatly reduces the engineering quantity and cost when the old multi-split air conditioner system is updated.

Inventors

  • ZHANG SHIQIANG
  • LIU GUAN
  • GUO JIANMIN

Assignees

  • 珠海格力电器股份有限公司

Dates

Publication Date
20260505
Application Date
20210220

Claims (13)

  1. 1. An air conditioner indoor unit comprising: The original air conditioner indoor unit at least comprises a first main board, wherein the first main board is in a power-off state; The control assembly (1) is positioned outside the original air conditioner and comprises a second main board (2), a second temperature sensing bulb and a second throttling element (3), wherein the second main board (2) is connected with the second temperature sensing bulb and the second throttling element (3) and is used for adjusting the opening of the second throttling element (3) according to the temperature detected by the second temperature sensing bulb.
  2. 2. The air conditioner indoor set of claim 1, wherein the original air conditioner indoor set further comprises: An internal heat exchanger (4); A first throttling element (5) positioned on a liquid pipe (6) of the internal heat exchanger (4); the second main board (2) is also connected with the first throttling element (5) and is used for controlling the first throttling element (5) to be at the maximum opening degree.
  3. 3. An air conditioning indoor unit according to claim 2, characterised in that the second throttling element (3) is located on the liquid pipe (6) of the indoor unit heat exchanger (4).
  4. 4. An air conditioner indoor unit according to claim 2, wherein, The original air conditioner indoor unit further comprises a first pipe inlet temperature sensing bulb (8) which is positioned on a liquid pipe (6) of the indoor unit heat exchanger (4) and is positioned between the first throttling element (5) and the indoor unit heat exchanger (4); The first outlet pipe temperature sensing bulb (9) is positioned on an air pipe (7) of the inner machine heat exchanger (4); the second temperature sensing bulb comprises a second pipe inlet temperature sensing bulb (10) which is positioned on a liquid pipe (6) of the internal machine heat exchanger (4) and is positioned between the second throttling element (3) and the first throttling element (5); the second outlet pipe temperature sensing bulb (11) is positioned on the air pipe (7) of the inner machine heat exchanger (4); the second main board (2) is used for acquiring the inlet pipe temperature detected by the second inlet pipe temperature sensing bulb (10) and the outlet pipe temperature detected by the second outlet pipe temperature sensing bulb (11).
  5. 5. The air conditioner indoor unit of claim 1, wherein the air conditioner indoor unit comprises, The original air conditioner indoor unit also comprises a first environment temperature sensing bulb (12); The control assembly (1) also comprises a second environment temperature sensing bulb (13) for detecting the indoor environment temperature of the original air conditioner indoor unit; the second main board (2) is also connected with the second environment temperature sensing bag (13) and is used for acquiring the environment temperature.
  6. 6. The air conditioner indoor unit of claim 1, wherein the air conditioner indoor unit comprises, The original air conditioner indoor unit also comprises a motor (14); the second main board (2) is also connected with the motor (14) and is used for controlling the operation of the motor (14).
  7. 7. An air conditioner indoor unit control method applied to the air conditioner indoor unit according to any one of claims 1 to 6, comprising: acquiring the temperature detected by the second temperature sensing bulb; And adjusting the opening degree of the second throttling element according to the temperature detected by the second temperature sensing bulb.
  8. 8. The method of claim 7, wherein the temperature detected by the second bulb comprises an inlet pipe temperature and an outlet pipe temperature, wherein adjusting the opening of the second throttling element according to the temperature detected by the second bulb comprises determining an inlet pipe temperature difference of the air conditioner according to the inlet pipe temperature and the outlet pipe temperature, and wherein adjusting the opening of the second throttling element according to the inlet pipe temperature difference.
  9. 9. The method of claim 8, wherein adjusting the opening of the second throttling element based on the inlet and outlet pipe temperature difference comprises: Detecting an operation mode of the air conditioner indoor unit; when the operation mode is a refrigeration mode, correcting the temperature difference of the inlet pipe and the outlet pipe, and adjusting the opening of the second throttling element according to the corrected temperature difference of the inlet pipe and the outlet pipe; and when the operation mode is a heating mode, adjusting the opening of the second throttling element according to the temperature difference of the inlet pipe and the outlet pipe.
  10. 10. The method of claim 9, wherein modifying the inlet and outlet tube temperature differential comprises: Detecting the current operation capacity ratio value and system low pressure of the air conditioner indoor unit; and determining a temperature correction value according to the current operation capacity ratio and/or the system low pressure, and correcting the temperature difference of the inlet pipe and the outlet pipe according to the temperature correction value, wherein the corrected temperature difference of the inlet pipe and the outlet pipe=the temperature difference of the inlet pipe and the outlet pipe-the correction value.
  11. 11. The method of claim 10, wherein the current operating capacity ratio is a ratio of an operating capacity of the air conditioner to an operating capacity of all on air conditioners, wherein the greater the current operating capacity ratio, the greater the temperature correction value, and the greater the system low pressure, the greater the temperature correction value.
  12. 12. An air conditioning unit comprising the air conditioning unit according to any one of claims 1 to 6.
  13. 13. A storage medium containing computer-executable instructions, which when executed by a computer processor are for performing the air conditioner indoor unit control method according to any one of claims 7 to 11.

Description

Air conditioner indoor unit, control method thereof and air conditioner unit Technical Field The invention relates to the technical field of air conditioners, in particular to an air conditioner indoor unit, a control method thereof and an air conditioning unit. Background Commercial multi-split air conditioner is developed for many years, and old multi-split air conditioner is used for many years, so that the performance, energy efficiency and reliability of the commercial multi-split air conditioner are obviously behind those of the current novel multi-split air conditioner system. There are many old multi-split systems on the market that need to be updated. Because of the complexity of the multi-split system, when the old multi-split system is updated, if the system internal machine is replaced, the built-in structure of an owner needs to be destroyed, the engineering quantity is large, the cost is high, and if the system internal machine needs to be reserved, the problem that the external machine is compatible with the internal machines of different brands can be encountered. Aiming at the problem that an external multi-split machine is not compatible with internal machines of different brands in the process of updating the multi-split machine in the related technology, no effective solution is proposed at present. Disclosure of Invention The invention provides an air conditioner indoor unit, a control method thereof and an air conditioner unit, which at least solve the problem that an outer machine of a multi-split air conditioner is incompatible with inner machines of different brands in the process of updating the multi-split air conditioner in the prior art. In order to solve the technical problems, according to one aspect of the embodiment of the invention, an air conditioner indoor unit is provided, which comprises an original air conditioner indoor unit, at least a first main board, a control component 1, a second main board 2, a second temperature sensing bulb and a second throttling element 3, wherein the first main board is in a power-off state, the control component 1 is positioned outside the original air conditioner indoor unit and comprises the second main board 2, the second temperature sensing bulb and the second throttling element 3, and the second main board 2 is connected with the second temperature sensing bulb and the second throttling element 3 and is used for adjusting the opening of the second throttling element 3 according to the temperature detected by the second temperature sensing bulb. Further, the original air conditioner inner unit further comprises an inner unit heat exchanger 4, a first throttling element 5 positioned on a liquid pipe 6 of the inner unit heat exchanger 4, and the second main board 2 is further connected with the first throttling element 5 and used for controlling the first throttling element 5 to be at the maximum opening. Further, the second throttling element 3 is located on the liquid pipe 6 of the internal heat exchanger 4. Further, the original air conditioner indoor unit further comprises a first inlet pipe temperature sensing bulb 8 which is positioned on the liquid pipe 6 of the indoor unit heat exchanger 4 and positioned between the first throttling element 5 and the indoor unit heat exchanger 4, a first outlet pipe temperature sensing bulb 9 which is positioned on the air pipe 7 of the indoor unit heat exchanger 4, a second temperature sensing bulb which comprises a second inlet pipe temperature sensing bulb 10 which is positioned on the liquid pipe 6 of the indoor unit heat exchanger 4 and positioned between the second throttling element 3 and the first throttling element 5, a second outlet pipe temperature sensing bulb 11 which is positioned on the air pipe 7 of the indoor unit heat exchanger 4, and a second main board 2 which is used for acquiring inlet pipe temperature detected by the second inlet pipe temperature sensing bulb 10 and outlet pipe temperature detected by the second outlet pipe temperature sensing bulb 11. Further, the original air conditioner indoor unit further comprises a first environment temperature sensing bulb 12, the control assembly 1 further comprises a second environment temperature sensing bulb 13 used for detecting the indoor environment temperature of the original air conditioner indoor unit, and the second main board 2 is further connected with the second environment temperature sensing bulb 13 and used for acquiring the environment temperature. Further, the original air conditioner further comprises a motor 14, and the second main board 2 is further connected with the motor 14 and used for controlling the operation of the motor 14. According to another aspect of the embodiment of the invention, an air conditioner indoor unit control method is provided, and is applied to the air conditioner indoor unit, and the air conditioner indoor unit control method comprises the steps of obtaining the temperature detected b