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Household heat pump type energy accumulation central air conditioner set

A central air-conditioning and heat pump technology is applied in the field of air-conditioning units with dual functions of cold storage in winter and heat storage in summer. or eliminate the effect of the heat pump auxiliary heat source

Inactive Publication Date: 2008-02-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention adds a phase-change energy storage device to the common air source heat pump household central air-conditioning system, and makes full use of the low-valley electricity cold storage in the summer for daytime use, reducing the daytime air-conditioning power load; in winter, the air-conditioning energy-saving effect is fully exerted, and the heat pump is fully used during the daytime , transfer excess heat to night use, solve the problem of insufficient heat supply at night

Method used

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  • Household heat pump type energy accumulation central air conditioner set
  • Household heat pump type energy accumulation central air conditioner set
  • Household heat pump type energy accumulation central air conditioner set

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specific Embodiment approach 1

[0011] Specific embodiment one: As shown in Figure 1, the air conditioning unit of this embodiment includes a compressor 1, a low-pressure gas-liquid separator 18, a four-way reversing valve 2, a throttling mechanism 20, an outdoor heat exchanger 17 and an indoor plate type The heat exchanger 5 consists of refrigeration equipment and an energy storage heat exchange device 8. The water inlet 8-1 of the energy storage heat exchange device 8 is connected to the water inlet 5-1 of the indoor plate heat exchanger 5, and the water outlet 8-2 It is connected with the water outlet 5-2 of the indoor plate heat exchanger 5; the refrigerant steam outlet 8-3 of the energy storage heat exchange device 8 is respectively connected with the four-way reversing valve 2, the inlet of the low-pressure gas-liquid separator 18, and the indoor plate heat exchanger. The refrigerant vapor outlet 5-3 of the heater 5 is connected, and the refrigerant liquid inlet 8-4 of the energy storage heat exchange d...

specific Embodiment approach 2

[0017] Specific implementation mode 2: The design of the energy storage and heat exchange device is the key to this system. The energy storage heat exchange device is required to have multiple functions, and there are three kinds of media inside: refrigerant, phase change material and water. For this reason, this embodiment designs a heat exchange device of a three-pipe energy storage tank. The energy storage tank heat exchange device 8 has three layers of sleeves, namely a central sleeve 8-5, an intermediate sleeve 8-6 and an outer sleeve 8-7, and the head end of the outer sleeve 8-7 has an inlet The water port 8-1 has a water outlet 8-2 at the end; the central sleeve 8-5 has a refrigerant liquid inlet 8-4 at the head end and a refrigerant vapor outlet 8-3 at the end. Among them, the central casing 8-5 is a refrigerant pipe, the middle casing 8-6 stores phase change materials, and the outer casing 8-7 is a cold water pipe, and its structural design is shown in FIG. 2 . When...

specific Embodiment approach 3

[0018] Specific embodiment three: the air-conditioning unit of this embodiment can realize five operating modes in summer, and has four operating modes (as shown in Table 1) in winter, and the specific introduction is as follows:

[0019] (1) As shown in Figure 3, the separate cooling of the summer unit (serial number 1) and the separate heating of the winter unit (serial number 6) are basically the same as the conventional heat pump air conditioner, only need to enter the refrigerant into the valve of the energy storage heat exchange device closure.

[0020] (2) As shown in Figure 4, the cold storage of the unit alone (serial number 2) occurs in the summer evening when the electricity price is low and there is no need for cooling. At this time, the outdoor temperature is low, which can reduce the condensation temperature of the unit and improve the cooling efficiency. The heat storage unit alone (serial number 7) occurs in winter when the daytime temperature is high and the r...

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Abstract

The inventive central air-conditioning machine set comprises a refrigerating plant and an energy-storage heat-exchanging unit, the water inlet of which is connected with the water inlet of an indoor plate heat exchanger and the water outlet of which is connected with the water outlet of the indoor plate heat exchanger. The refrigerant steam outlet of the energy-storage heat-exchanging unit is connected with a four-way valve, an inlet of a low-pressure gas-liquid separator and the refrigerant steam outlet of the indoor plate heat exchanger separately. The refrigerant liquid inlet of the energy-storage heat-exchanging unit is connected with a throttle mechanism and the refrigerant liquid inlet of the indoor plate heat exchanger separately.

Description

technical field [0001] The invention relates to an air-conditioning unit, in particular to an air-conditioning unit with dual functions of cold storage in winter and heat storage in summer. Background technique [0002] With the increasing application of air source heat pump units in my country's household central air-conditioning systems, its existing problems are gradually reflected in the process of use: (1) The use of air-conditioning in summer is concentrated, resulting in concentrated power loads and aggravating the peak and valley of urban power grids. Difference. Since air conditioners are mainly operated during the daytime in summer, the load on the power grid continues to rise, resulting in a continuous increase in the peak load of the power grid. (2) The heating capacity of the heat pump in winter is not synchronized with the load demand of the building, and there is a contradiction between supply and demand. Affected by the temperature difference between day and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B30/02F25D3/00
Inventor 马最良肖国锋姜益强
Owner HARBIN INST OF TECH
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