CN-122015190-A - Heat exchange device, control method for heat exchange device, storage medium, and program product

Abstract

The present disclosure relates to a heat exchange device, a control method of the heat exchange device, a storage medium, and a program product. The heat exchange device comprises an indoor heat exchanger and an outdoor throttling device, wherein the outdoor throttling device is connected with an inlet of the indoor heat exchanger, the indoor heat exchanger comprises at least three heat exchange tube groups and a plurality of indoor throttling devices, each indoor throttling device is connected with at least one of the at least three heat exchange tube groups, and the plurality of indoor throttling devices are used for adjusting a heat exchange mode of the at least one heat exchange tube group according to the refrigerant temperature of an outdoor unit of the heat exchange device under the condition that the outdoor throttling device is fully opened so as to enable the indoor heat exchanger to perform constant-temperature dehumidification. Different constant temperature dehumidification modes can be selected based on different temperatures of the refrigerant of the outdoor unit, and heat exchange efficiency of the indoor heat exchanger is improved while the constant temperature dehumidification effect is guaranteed.

Inventors

• HUANG TAO
• GAO SHAN
• MA YUBO
• YUAN HUIHUI
• YAN LEI
• LI YU

Assignees

• 小米科技(武汉)有限公司

Dates

Publication Date

20260512

Application Date

20260310

Claims (20)

1. 1. The heat exchange device is characterized by comprising an indoor heat exchanger and an outdoor throttling device, wherein the outdoor throttling device is connected with an inlet of the indoor heat exchanger, the indoor heat exchanger comprises at least three heat exchange tube groups and a plurality of indoor throttling devices, and each indoor throttling device is connected with at least one of the at least three heat exchange tube groups; The indoor throttling devices are used for adjusting the heat exchange mode of at least one of the at least three heat exchange tube groups according to the temperature of the refrigerant of the outdoor unit of the heat exchange device under the condition that the outdoor throttling device is fully opened so as to enable the indoor heat exchanger to perform constant-temperature dehumidification.
2. 2. The apparatus of claim 1, wherein the at least three heat exchange tube banks comprises a first heat exchange tube bank, a second heat exchange tube bank, and a third heat exchange tube bank, the plurality of indoor throttle devices comprising a first indoor throttle device and a second indoor throttle device; The outlet of the first heat exchange tube group is connected with the inlet of the third heat exchange tube group through the first indoor throttling device, the second indoor throttling device is connected between the inlet of the first heat exchange tube group and the inlet of the second heat exchange tube group, the inlet of the first heat exchange tube group and the inlet of the second indoor throttling device are also connected with the outdoor throttling device, and the outlet of the second heat exchange tube group is connected with the outlet of the third heat exchange tube group.
3. 3. The apparatus of claim 2, wherein the plurality of indoor throttle devices further comprises a third indoor throttle device and a fourth indoor throttle device; The outlet of the second heat exchange tube group is connected with the inlet of the third indoor throttling device, the outlet of the third heat exchange tube group is connected with the inlet of the fourth indoor throttling device, and the outlet of the third indoor throttling device is connected with the outlet of the fourth indoor throttling device.
4. 4. A device according to claim 3, wherein the third heat exchange tube group comprises a plurality, the first indoor throttle device comprises a plurality, and the fourth indoor throttle device comprises a plurality; The outlets of the first heat exchange tube groups are connected with the inlets of the different third heat exchange tube groups through different first indoor throttling devices, and the outlets of the different third heat exchange tube groups are connected with the inlets of different fourth indoor throttling devices.
5. 5. A device according to claim 3, wherein the heat exchange device further comprises a compressor; and the outlet of the third indoor throttling device and the outlet of the fourth indoor throttling device are connected with the compressor.
6. 6. A device according to any one of claims 2 to 5, wherein the tube diameter of the third heat exchange tube group is larger than the tube diameters of the first heat exchange tube group and the second heat exchange tube group, and the tube diameters of the first heat exchange tube group and the second heat exchange tube group are the same.
7. 7. The apparatus of claim 1 wherein said heat exchange tube stack comprises at least two rows of refrigerant lines parallel to each other.
8. 8. The apparatus of claim 7 wherein the refrigerant inlet and outlet of said heat exchange tube bank are in different rows.
9. 9. The apparatus of claim 1, wherein the heat exchange device comprises an air conditioner.
10. 10. A control method of a heat exchange device, characterized by being applied to the heat exchange device of claim 1, the method comprising: in response to the acquisition of the dehumidification command, acquiring the refrigerant temperature of an outdoor unit of the heat exchange device under the condition that the indoor environment temperature is less than or equal to the set temperature of the heat exchange device; based on the refrigerant temperature of the outdoor unit, adjusting a heat exchange mode of at least one heat exchange tube group in the indoor heat exchanger through the outdoor throttling device and the plurality of indoor throttling devices; And constant-temperature dehumidification is carried out based on the heat exchange mode of the adjusted heat exchange tube group.
11. 11. The method of claim 10, wherein adjusting the heat exchange mode of at least one heat exchange tube group in the indoor heat exchanger based on the outdoor refrigerant temperature through the outdoor throttle device and the plurality of indoor throttle devices comprises: Determining a constant temperature dehumidification mode of the indoor heat exchanger based on the refrigerant temperature of the outdoor unit, wherein different constant temperature dehumidification modes have different heating capacities, and the lower the refrigerant temperature of the outdoor unit is, the lower the heating capacity required by the indoor heat exchanger is; And according to the constant-temperature dehumidification mode, the heat exchange mode of at least one heat exchange tube group in the indoor heat exchanger is adjusted through the outdoor throttling device and the plurality of indoor throttling devices.
12. 12. The method according to claim 10, characterized by being applied to a heat exchange device according to any one of claims 3-6; The adjusting the heat exchange mode of at least one heat exchange tube group in the indoor heat exchanger based on the outdoor unit refrigerant temperature through the outdoor throttling device and the plurality of indoor throttling devices comprises: and adjusting the heat exchange mode of at least one heat exchange tube group in the indoor heat exchanger by adjusting the throttling states of the outdoor throttling device and at least one indoor throttling device based on the refrigerant temperature of the outdoor unit.
13. 13. The method of claim 12, wherein adjusting the heat exchange mode of at least one heat exchange tube group in the indoor heat exchanger by adjusting the throttle state of the outdoor throttle device and at least one indoor throttle device based on the outdoor refrigerant temperature comprises: And under the condition that the temperature of the refrigerant of the outdoor unit is less than or equal to a preset temperature threshold value, controlling the outdoor throttling device to be fully opened, controlling the first indoor throttling device and the second indoor throttling device to be fully opened, and controlling the third indoor throttling device and the fourth indoor throttling device to be fully opened so as to enable the first heat exchange tube group to be in a heating mode, and enabling the second heat exchange tube group and the at least one third heat exchange tube group to be in a refrigerating and dehumidifying mode.
14. 14. The method of claim 12, wherein adjusting the heat exchange mode of at least one heat exchange tube group in the indoor heat exchanger by adjusting the throttle state of the outdoor throttle device and at least one indoor throttle device based on the outdoor refrigerant temperature comprises: And under the condition that the temperature of the refrigerant of the outdoor unit is greater than a preset temperature threshold, if the temperature difference between the set temperature and the indoor environment temperature is less than or equal to the preset temperature difference threshold, controlling the outdoor throttling device to be fully opened, the first indoor throttling device to be fully opened and the second indoor throttling device to be throttled so as to enable the first heat exchange tube group and the third heat exchange tube group to be in a heating mode and the second heat exchange tube group to be in a refrigerating and dehumidifying mode.
15. 15. The method of claim 14, wherein the method further comprises: and controlling the third indoor throttling device to be fully opened, and throttling the fourth indoor throttling device to adjust the liquid refrigerant output by the third heat exchange tube group into low-pressure gaseous refrigerant.
16. 16. The method of claim 12, wherein adjusting the heat exchange mode of at least one heat exchange tube group in the indoor heat exchanger by adjusting the throttle state of the outdoor throttle device and at least one indoor throttle device based on the outdoor refrigerant temperature comprises: And if the temperature difference between the set temperature and the indoor environment temperature is larger than a preset temperature difference threshold value, controlling the outdoor throttling device to be fully opened, the first indoor throttling device to be throttled and the second indoor throttling device to be fully opened so that the first heat exchange tube group and the second heat exchange tube group are in a heating mode, and the third heat exchange tube group is in a refrigeration and dehumidification mode.
17. 17. The method of claim 16, wherein the method further comprises: and controlling the third indoor throttling device to throttle and the fourth indoor throttling device to be fully opened so as to adjust the liquid refrigerant output by the second heat exchange tube group into low-pressure gaseous refrigerant.
18. 18. The method according to claim 10, wherein the method further comprises: when the indoor environment temperature is less than or equal to the set temperature, reducing the rotating speed of an outdoor fan of the heat exchange device to a target rotating speed based on the outdoor refrigerant temperature and/or a temperature difference value, wherein the temperature difference value is a temperature difference value between the set temperature and the indoor environment temperature; Constant temperature dehumidification is carried out based on the heat exchange mode of the heat exchange tube group after adjustment, and the method comprises the following steps: And performing constant-temperature dehumidification based on the heat exchange mode of the adjusted heat exchange tube group and the target rotating speed.
19. 19. The method according to claim 10, wherein the method further comprises: And responding to the obtained dehumidification instruction, and dehumidifying based on a refrigeration dehumidification mode of the heat exchange device under the condition that the indoor environment temperature is higher than the set temperature.
20. 20. The method of claim 19, wherein the dehumidifying based on the cooling and dehumidifying mode of the heat exchange device comprises: And controlling the outdoor throttling device to throttle and the plurality of indoor throttling devices to be fully opened so that the heat exchange device dehumidifies based on the refrigeration and dehumidification mode.

Description

Heat exchange device, control method for heat exchange device, storage medium, and program product Technical Field The disclosure relates to the technical field of air conditioners, and in particular relates to a heat exchange device, a control method of the heat exchange device, a storage medium and a program product. Background Most of the existing air conditioners have a dehumidifying function. For example, the air conditioner can remove heat in indoor air and remove part of moisture through the circulation of evaporating and absorbing heat of the refrigerant by the indoor heat exchanger and condensing and radiating heat of the refrigerant by the outdoor heat exchanger. In the dehumidification scheme of the air conditioner provided in the related art, dehumidification effect and user experience are to be improved. Disclosure of Invention To overcome the problems in the related art, the present disclosure provides a heat exchange device, a control method of the heat exchange device, a storage medium, and a program product. According to a first aspect of the embodiment of the disclosure, a heat exchange device is provided, which comprises an indoor heat exchanger and an outdoor throttling device, wherein the outdoor throttling device is connected with an inlet of the indoor heat exchanger, the indoor heat exchanger comprises at least three heat exchange tube groups and a plurality of indoor throttling devices, each indoor throttling device is connected with at least one of the at least three heat exchange tube groups, and the plurality of indoor throttling devices are used for adjusting a heat exchange mode of at least one of the at least three heat exchange tube groups according to the refrigerant temperature of an outdoor unit of the heat exchange device under the condition that the outdoor throttling device is fully opened so as to enable the indoor heat exchanger to perform constant-temperature dehumidification. By adopting the heat exchange device, the indoor heat exchanger comprises at least three heat exchange tube groups and a plurality of indoor throttling devices, and based on the plurality of indoor throttling devices, the heat exchange mode of at least one heat exchange tube group is adjusted according to the refrigerant temperature of the outdoor unit, so that different constant temperature dehumidification modes can be selected based on the refrigerant temperature of the outdoor unit, the constant temperature dehumidification effect is ensured, and the heat exchange efficiency of the indoor heat exchanger is improved. In some possible embodiments, the at least three heat exchange tube banks include a first heat exchange tube bank, a second heat exchange tube bank, and a third heat exchange tube bank, the plurality of indoor restriction devices includes a first indoor restriction device and a second indoor restriction device, an outlet of the first heat exchange tube bank is connected to an inlet of the third heat exchange tube bank through the first indoor restriction device, the second indoor restriction device is connected between an inlet of the first heat exchange tube bank and an inlet of the second heat exchange tube bank, the inlet of the first heat exchange tube bank and an inlet of the second indoor restriction device are also connected to the outdoor restriction device, and an outlet of the second heat exchange tube bank is connected to an outlet of the third heat exchange tube bank. By adopting the embodiment, based on the first indoor throttling device and the second indoor throttling device, the heat exchange mode of at least one heat exchange tube group is adjusted according to the temperature of the refrigerant of the outdoor unit, so that different constant temperature dehumidification modes are selected based on different temperatures of the refrigerant of the outdoor unit. In some possible embodiments, the plurality of indoor throttle devices further comprises a third indoor throttle device and a fourth indoor throttle device; The outlet of the second heat exchange tube group is connected with the inlet of the third indoor throttling device, the outlet of the third heat exchange tube group is connected with the inlet of the fourth indoor throttling device, and the outlet of the third indoor throttling device is connected with the outlet of the fourth indoor throttling device. With this embodiment, by controlling the third indoor throttle device and the fourth indoor throttle device, it is possible to prevent the gas-liquid mixture of the refrigerant at the outlet of the second heat exchange tube group and the refrigerant at the outlet of the third heat exchange tube group from directly mixing to cause the equipment to be damaged. In some possible embodiments, the third heat exchange tube group includes a plurality, the first indoor throttle device includes a plurality, and the fourth indoor throttle device includes a plurality; The outlets of the first heat exchange tube gro