CN2628969Y - Multi compressor variable capacity fixed frequency one with several air conditioner - Google Patents

Abstract

The utility model relates to a multi-compressor variable-capacity invariable-frequency one-compressor multi-air-conditioner pertaining to the technical field of the air conditioners, and consists of air compressors, check valves, a four-way reserving valve, a heat exchanger of an outdoor machine, an electronic expansion valve, a high-pressure globe valve, a heat exchanger of an indoor machine, a gas-liquid separator and an air inlet pipe of the air compressors. 2 or more invariable-frequency compressors are connected in parallel and respectively connected with a check valve. Various pipelines connected with various check valves is connected with the four-way reserving valve after various pipelines converge together. Each air compressor is provided with an air inlet pipe connected with the gas-liquid separator. 2 invariable-frequency air compressors that one air compressor is big and the other is small in the air capacity or optimally 3 air invariable-frequency air compressors that have different capacities are arranged. The utility model is variable in the capacity; has a smaller electricity consumption and smaller noise when the air compressors start up; can punctually adjust the operating condition and quickly obtain the optimal operating condition according to the temperature to saves the energy; also has a lower price, thus being easy to promote; can be widely used in the houses, hotels and enterprising units and so on.

Description

Multi-compressor, variable-capacity, fixed-frequency, one-drag multi-air conditioner

Technical field

The utility model belongs to the technical field of air conditioners, and more specifically relates to the improvement of a fixed-frequency one-drive multi-air conditioner.

Background technique

One-to-many air conditioners use one outdoor unit to drive multiple indoor units. There are generally two situations in the configuration of the existing outdoor unit. One is to configure only one fixed frequency compressor. The advantage of this configuration is that it is cheap and low in cost. The disadvantage is that the capacity (exhaust volume) and cooling (heat) capacity are basically fixed, and the indoor temperature changes greatly due to the intermittent interruption of the compressor, large power consumption, and high noise. The other is to configure only one inverter compressor. The advantages of this configuration are: both the capacity (displacement) and the cooling (heat) capacity change continuously in proportion to the frequency; the compressor can be started at a lower speed, so the starting current is small and the starting power consumption is small; Finally, the work of the compressor can be adjusted at any time according to the required room temperature and the working conditions of each indoor unit, and quickly meet the requirements; the temperature comfort is good, energy saving, and low noise. Its disadvantage is that it is expensive and expensive, and it is difficult for most users to accept it.

The purpose of this utility model is to overcome the above-mentioned shortcomings and deficiencies, to provide a fixed-frequency compressor that can be used to change the capacity, thereby reducing power consumption and noise at startup, and can also be used at any time according to the required room temperature and the working conditions of each indoor unit. Adjust the working state of the compressor, the temperature comfort is good, and energy is saved; and it has a lower price, which can be accepted by most users as a multi-compressor, variable capacity, fixed frequency, one-drag multi-air conditioner.

Contents of invention

In order to achieve the above object, the utility model is composed of a compressor, a one-way valve connected with the exhaust pipe of the compressor, a four-way reversing valve connected with a pipeline and a one-way valve, and a four-way reversing valve connected with a pipeline and a four-way reversing valve. The outdoor unit heat exchanger, the electronic expansion valve connected to the outdoor unit heat exchanger by pipeline, the high-pressure shut-off valve connected to the electronic expansion valve by pipeline, the indoor unit heat exchanger connected to the high-pressure shut-off valve by pipeline, It is composed of a low-pressure cut-off valve connected to the heat exchanger of the indoor unit by a pipeline, a gas-liquid separator connected by a pipeline through the above-mentioned four-way reversing valve and the low-pressure cut-off valve, and an inlet pipe connecting the gas-liquid separator and the compressor. The compressors are 2 or more fixed-frequency compressors connected in parallel. The discharge pipes of all fixed-frequency compressors are respectively connected to a one-way valve, and the pipelines connected to each one-way valve are connected to the four-way reversing valve after being merged. Each compressor has an inlet pipe connected to the gas-liquid separator. There are also 2 or more indoor unit heat exchangers. Each indoor unit heat exchanger is connected to a high-pressure cut-off valve through pipelines, and each high-pressure cut-off valve is connected to its own electronic expansion valve through pipelines. On the outdoor unit heat exchanger. Each heat exchanger of the indoor unit is connected to a low-pressure shut-off valve through pipelines, and all the pipelines connected to the low-pressure shut-off valve are combined and then connected to the four-way reversing valve.

There can be 2 fixed-frequency compressors, the capacity (displacement) of which is one large and one small. There can also be 3 fixed-frequency compressors, and their capacities (displacement volumes) are different. The fixed-frequency compressor can also be 4 or more, and its capacity (displacement) is different. The above-mentioned two or more fixed-frequency compressors can also have the same capacity (displacement), that is, the same power, or some of them have the same capacity, and should be configured according to needs. The effect is best when there are 2 or 3 fixed-frequency compressors, and 4 or more compressors can meet the needs of some large places.

When working, because there are multiple fixed-frequency compressors, various working states can be controlled according to needs. When rapid cooling (heating) is required, all fixed-frequency compressors can be turned on at the same time to increase capacity and power to achieve the purpose of rapid temperature adjustment. When the indoor temperature has reached the requirement, only the compressor with the minimum capacity or appropriate capacity can be turned on to keep warm, so as to save energy as much as possible. Each indoor unit can be turned on, off, and temperature adjusted independently, which is very convenient.

The task of the present utility model is accomplished like this.

The utility model completes the task of the variable capacity outdoor unit with two or more fixed-frequency compressors. It can not only change the capacity, but also has small startup power consumption and noise, and can adjust the work of each compressor in time according to the required room temperature and the working status of each indoor unit and quickly meet the requirements, with good temperature comfort and energy saving ; And it has a lower price, which can be accepted by most users and is suitable for promotion. It can be widely used in homes, office buildings, hotels, enterprises and institutions and other places.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present utility model.

Detailed ways

Embodiment 1. A multi-compressor variable-capacity fixed-frequency one-drag multi-air conditioner, as shown in FIG. 1 . It consists of a compressor 1, a one-way valve 2 connected to the exhaust pipe of the compressor 1, a four-way reversing valve 3 connected to the one-way valve 2 with a pipeline, and a four-way reversing valve 3 connected with a pipeline. Two outdoor unit heat exchangers 4, an electronic expansion valve 5 connected to the outdoor unit heat exchanger 4 by pipelines, a high-pressure shut-off valve 6 connected to the electronic expansion valve 5 by pipelines, and a high-pressure shut-off valve 6 connected by pipelines The indoor unit heat exchanger 7, the low-pressure cut-off valve 8 connected to the indoor unit heat exchanger 7 by pipelines, the above-mentioned four-way reversing valve 3 connected to the low-pressure cut-off valve 8 by pipelines, the four-way reversing valve connected by pipelines and four-way The gas-liquid separator 9 connected to the valve 3 and the inlet pipe 10 connecting the gas-liquid separator 9 and the compressor 1 are composed. Compressor 1 is two fixed-frequency compressors with one large and one small capacity (discharge capacity) connected in parallel. The discharge pipes of all fixed-frequency compressors are connected to a check valve 2 respectively. Each pipeline connected with each one-way valve 2 is connected with the four-way reversing valve 3 after merging, and the merging point is 11 . Each compressor 1 has an inlet pipe 10 connected with the gas-liquid separator 9 . The powers of the two compressors 1 are 1P and 1.5P respectively. There are three types of total capacity of the outdoor unit, which can have four working states of 2.5P, 1.5P, 1P and full stop. It can meet the different needs of rapid cooling (heating) to quickly adjust the indoor temperature, faster cooling (heating) to quickly adjust the indoor temperature, heat preservation and stop working. There are also two indoor unit heat exchangers 7, and each indoor unit heat exchanger 7 is connected to a high-pressure cut-off valve 6 through pipelines. Each high-pressure cut-off valve 6 is connected with its own electronic expansion valve 5 through pipelines. All pipelines that are individually connected to the electronic expansion valve 5 are connected to the outdoor unit heat exchanger 4 after being merged. Each indoor unit heat exchanger 7 is connected to a low-pressure shut-off valve 8 through pipelines, and all pipelines connected to the low-pressure shut-off valve 8 are connected to the four-way reversing valve 3 after merging. Compared with the frequency conversion machine of the same power, its price is greatly reduced, and the energy saving effect is obvious. The direction of the arrow in Figure 1 is the flow direction of the refrigerant during cooling, and the opposite is true during heating. The basic principle of its refrigeration (heat) is the same as the existing air conditioner.

Embodiment 2. A multi-compressor variable-capacity fixed-frequency one-drive multi-air conditioner. There are 3 fixed-frequency compressors with different capacities (displacement volumes). The discharge pipes of all fixed-frequency compressors are connected to a check valve. The pipelines connected with each one-way valve are connected with the four-way reversing valve after being merged. Each compressor has an inlet pipe connected to the gas-liquid separator. There are also two indoor unit heat exchangers, and each indoor unit heat exchanger is connected to a high-pressure cut-off valve through a pipeline. Each high-pressure cut-off valve is connected with its own electronic expansion valve through pipelines. All the pipelines connected separately with the electronic expansion valve are combined and then connected to the heat exchanger of the outdoor unit. Each heat exchanger of the indoor unit is connected to a low-pressure shut-off valve through pipelines, and all the pipelines connected to the low-pressure shut-off valve are combined and then connected to the four-way reversing valve. The powers of the three compressors are 1P, 1.5P and 2P respectively. The total capacity of the outdoor unit has 7 different types, and can have 8 working states of 4.5P, 3.5P, 3P, 2.5P, 2P, 1.5P, 1P and full stop to meet different needs, and the energy saving effect is very significant.

Embodiments 1-2 not only have variable capacity, but also have relatively low starting power consumption and noise, and low price, which can be accepted by most users. It can be widely used in homes, office buildings, hotels, enterprises and institutions and other places.

Claims (4)

1. A multi-compressor variable-capacity fixed-frequency one-drag multi-air conditioner, which is composed of a compressor, a one-way valve connected to the discharge pipe of the compressor, a four-way reversing valve connected with the pipeline and the one-way valve, and The outdoor unit heat exchanger connected with the pipeline and the four-way reversing valve, the electronic expansion valve connected with the pipeline and the outdoor unit heat exchanger, the high-pressure cut-off valve connected with the pipeline and the electronic expansion valve, and the high-pressure shut-off valve connected with the pipeline The heat exchanger of the indoor unit connected with the valve, the low-pressure shut-off valve connected with the heat exchanger of the indoor unit with the pipeline, the gas-liquid separator connected with the low-pressure shut-off valve through the four-way reversing valve with the pipeline, and the gas-liquid separator connected with the Composed of the intake pipe of the compressor, it is characterized in that the compressors are two or more fixed-frequency compressors connected in parallel, and the exhaust pipes of all the fixed-frequency compressors are respectively connected to a check valve, which is connected with each check valve. The separately connected pipelines are combined and then connected to the four-way reversing valve. Each compressor has an inlet pipe connected to the gas-liquid separator. There are also 2 or more indoor unit heat exchangers. The machine heat exchangers are connected to a high-pressure shut-off valve through pipelines, and each high-pressure shut-off valve is connected to its own electronic expansion valve through pipelines. Each indoor unit heat exchanger is connected to a low-pressure shut-off valve through pipelines, and all the pipelines connected to the low-pressure shut-off valve are connected to the four-way reversing valve after being merged. 2. According to the multi-compressor variable-capacity fixed-frequency one-to-multiple air conditioner according to claim 1, it is characterized in that there are two fixed-frequency compressors with one large capacity and one small capacity. 3. According to the multi-compressor variable-capacity fixed-frequency one-to-multiple air conditioner according to claim 1, it is characterized in that there are three fixed-frequency compressors with different capacities. 4. According to the multi-compressor variable-capacity fixed-frequency one-to-multiple air conditioner according to claim 1, it is characterized in that there are four fixed-frequency compressors with different capacities.

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