Split type water system central air conditioner main unit

Abstract

The utility model relates to a split type water system central air conditioner host which comprises an energy exchange and storage unit and a compression energy collection unit. The compression energy collection unit comprises a compressor, an outlet of the compressor is connected with a first port of a four-way valve, a second port of the four-way valve is connected with an inlet of the heat exchanger, and the energy exchange and storage unit comprises a water tank and a heat exchanger arranged in the water tank; an outlet of the heat exchanger is connected with a first port of the heat exchanger through a throttling valve, a second port of the heat exchanger is connected with a third port of the four-way valve, and a fourth port of the four-way valve is connected with an inlet of the compressor through a gas-liquid separator. In the working process, the heat preservation water tank is sufficient in water quantity, so that the fluctuation resistance is huge, vortex convection in the corresponding direction of the bidirectional flow impeller is assisted, the heat exchange efficiency is extremely high, and therefore the main machine compressor can always work in a high-efficiency interval, saves energy and is more durable.

Description

Technical Field

[0001] The utility model relates to the technical field of central air conditioners for water systems, and particularly relates to a split central air conditioner host for water systems. Background Art

[0002] In traditional water-source heat pump air conditioners, after compression work, shell-and-tube heat exchangers, plate heat exchangers, etc. are often used for fluorine-water heat exchange to provide heat energy or cold energy to the user side (room indoor unit). The above-mentioned plate heat exchanger belongs to the instant heat (cold) type heat exchange method, and the water capacity is relatively small, only a few liters to more than a dozen liters. Therefore, it is necessary to maintain a water circulation with extremely high flow requirements with the user side (room indoor unit) to ensure that the host will not be damaged due to overheating or over-freezing. However, in actual applications, the demand of the user side (room indoor unit) is dynamically changing. To ensure the safety of the unit, the host can only increase the flow bypass and frequently start and stop the compressor to maintain operation, which makes the working conditions of the unit deteriorate, the energy consumption increase, and the reliability decrease. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a split central air conditioner host for water systems with lower energy consumption and higher reliability.

[0004] To solve the above technical problem, a split central air conditioner host for water systems provided by the utility model includes: a heat exchange and energy storage unit and a compression and energy collection unit; the compression and energy collection unit includes a compressor, the outlet of the compressor is connected to the first port of a four-way valve, the second port of the four-way valve is connected to the inlet of a heat exchanger, and the heat exchange and energy storage unit includes: a water tank and a heat exchanger arranged in the water tank; the outlet of the heat exchanger is connected to the first port of the heat exchanger, the second port of the heat exchanger is connected to the third port of the four-way valve, and the fourth port of the four-way valve is connected to the inlet of the compressor through a gas-liquid separator.

[0005] Further preferably, a throttle valve is arranged between the outlet of the heat exchanger and the first port of the heat exchanger.

[0006] Further preferably, the water tank is arranged longitudinally, and the heat exchanger is arranged in the middle of the water tank; the heat exchanger includes upper and lower horizontal coil heat exchangers which are distributed at intervals up and down and are connected in series with each other, and a two-way flow turbine impeller is arranged between the upper and lower horizontal coil heat exchangers to improve the heat exchange efficiency.

[0007] Further preferably, the two-way flow turbine impeller is in transmission connection with a shielded drive motor set at the bottom of the water tank through a coupling shaft.

[0008] Further preferably, the upper and lower horizontal coil heat exchangers are wound in multiple combinations using anti-corrosion metal capillary round tubes.

[0009] Advantages of the present utility model: (1) The present utility model provides a heat pump main unit with a heat exchange and energy storage unit, which is connected to the main unit by a fluorine pipe. By adding a water tank for heat preservation, a cylindrical fixing frame is arranged in the middle of the water tank. Horizontal coil heat exchangers are respectively arranged above and below the fixing frame. A two-way flow turbine impeller is arranged in the middle of the heat exchanger and is connected to a shielding drive motor set at the bottom through a coupling shaft. The horizontal coil heat exchanger is wound by multiple combinations of anti-corrosion metal capillary tubes, which has a large surface area and is strong and pressure-resistant. The upper and lower horizontal coil heat exchangers are all immersed in water. During operation, the water volume in the heat preservation water tank is sufficient, so the anti-fluctuation ability is huge. Coupled with the corresponding direction vortex convection of the two-way flow impeller, the heat exchange efficiency is extremely high, so that the main unit compressor can always work in the high-efficiency range, saving energy and being more durable. (2) The water capacity of the newly established heat exchange and energy storage unit of the present utility model is hundreds of times that of the traditional fluorine-water heat exchanger. The heat exchanger is wound by multiple groups of capillary tubes, has a relatively large surface area and is immersed in water. Coupled with the corresponding direction vortex convection of the two-way flow impeller, the heat exchange efficiency is extremely high. The operation of the main unit is no longer affected by the fluctuations on the user side, avoiding high and low pressure faults of the main unit and faults caused by local high (low) temperatures. The compressor can always work in the high-efficiency range, and the system is energy-saving and durable. (3) The heat exchange and energy storage unit of the present utility model is separated from the compression energy collection unit. The heat exchange and energy storage unit can be installed in the indoor machine room to avoid freezing faults of the water system caused by bad weather. Further improving the reliability of the split water system central air-conditioning main unit and reducing energy consumption. Brief Description of the Drawings

[0010] In order to clearly illustrate the innovative principle of the utility model and its advantages compared with the existing split water system central air-conditioning main unit, the following non-limiting examples applying the principle will be described with the help of the drawings. In the figures:

[0011] Figure 1 It is the structural schematic diagram of the split water system central air-conditioning main unit of the present utility model. Detailed Embodiment

[0012] The following will clearly and completely describe the technical solutions in the embodiments of the present model with reference to the drawings in the embodiments of the present model. Obviously, the described embodiments are only a part of the embodiments of the present model, rather than all the embodiments. Based on the embodiments of the present model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present model. Embodiment

[0013] As Figure 1, A split - type water - system central air - conditioning host, comprising a heat - exchange and energy - storage unit 1 and a compression and energy - collection unit 2; the compression and energy - collection unit 2 includes a compressor 21, the outlet of the compressor 21 is connected to the first port of a four - way valve 22, the second port of the four - way valve 22 is connected to the inlet of a heat exchanger 23, and the heat - exchange and energy - storage unit 1 includes: a water tank 11 and a heat exchanger 12 disposed within the water tank; the outlet of the heat exchanger 23 is connected to the first port of the heat exchanger 12 via a throttle valve 25, the second port of the heat exchanger 12 is connected to the third port of the four - way valve 22, and the fourth port of the four - way valve 22 is connected to the inlet of the compressor 21 via a gas - liquid separator 24.

[0014] The water tank 11 is vertically arranged, and the heat exchanger 12 is disposed in the middle of the water tank 11; the heat exchanger 12 includes upper and lower horizontally coiled - tube heat exchangers which are spaced apart vertically and connected in series with each other, and a two - way flow turbine impeller 13 is disposed between the upper and lower horizontally coiled - tube heat exchangers.

[0015] The two - way flow turbine impeller is in transmission connection with a shielded drive motor set at the bottom of the water tank 11 through a coupling shaft. The horizontally coiled - tube heat exchanger is wound by multiple combinations of anti - corrosion metal capillary round tubes, has a large surface area and is immersed in water. With the corresponding - direction vortex convection of the two - way flow impeller, the heat - exchange efficiency is extremely high. The operation of the host is no longer affected by the fluctuations on the user side, avoiding high - and - low - pressure faults of the host and faults caused by local high (low) temperatures. The compressor can always operate in the high - efficiency range, and the system is energy - saving and durable.

[0016] The working method of the split - type water - system central air - conditioning host in this embodiment includes:

[0017] When heating the water tank, the compressor 21 compresses the refrigerant into a high - temperature and high - pressure gas state, which enters the heat exchanger 12 in the water tank through the four - way valve 22. After releasing heat energy here, it condenses into a liquid state, and then becomes a low - temperature gas state after passing through the throttle valve 25; then it enters the heat exchanger 23 of the compression and energy - collection unit 2; after absorbing heat here, the refrigerant passes through the four - way valve 22 and the gas - liquid separator 24, and then returns to the compressor 21 for compression again.

[0018] When cooling the water tank, the compressor 21 compresses the refrigerant into a high - temperature and high - pressure gas state, which enters the heat exchanger 23 of the compression and energy - collection unit 2 through the four - way valve 22; after releasing heat energy here, it condenses into a liquid state, passes through the throttle valve 25 and enters the heat exchanger 12 in the water tank. After absorbing heat in the heat exchanger 12, the refrigerant becomes a gas state again, and then passes through the four - way valve 22 and the gas - liquid separator 24, and then returns to the compressor 21 for compression again.

[0019] The above are the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A split type water system central air conditioner host, characterized in that include: An energy exchange and storage unit (1) and a compression and energy collection unit (2), wherein the compression and energy collection unit (2) comprises a compressor (21), the outlet of the compressor (21) is connected to the first port of a four-way valve (22), and the second port of the four-way valve (22) is connected to the inlet of a heat exchanger (23). The energy exchange and storage unit (1) comprises: a water tank (11) and a heat exchanger (12) arranged in the water tank; the outlet of the heat exchanger (23) is connected to the first port of the heat exchanger (12), the second port of the heat exchanger (12) is connected to the third port of the four-way valve (22), and the fourth port of the four-way valve (22) is connected to the inlet of the compressor (21) via a gas-liquid separator (24).

2. The split-type water system central air-conditioning main unit according to claim 1 is characterized in that: A throttle valve (25) is provided between the outlet of the heat exchanger (23) and the first port of the heat exchanger (12).

3. The split-type water system central air-conditioning main unit according to claim 1 or 2, characterized in that: The water tank (11) is arranged longitudinally, and the heat exchanger (12) is arranged in the middle of the water tank (11); the heat exchanger (12) comprises upper and lower horizontal coil-type heat exchangers which are spaced apart and connected in series with each other, and a bidirectional flow turbine impeller (13) is arranged between the upper and lower horizontal coil-type heat exchangers.

4. The split-type water system central air-conditioning main unit according to claim 3 is characterized in that: The bidirectional flow turbine impeller (13) is transmission-connected to a shielded drive motor set at the bottom of the water tank (11) via a coupling shaft.

5. The split-type water system central air-conditioning main unit according to claim 3 is characterized in that: The upper and lower horizontal coil heat exchangers are wound by using multiple combinations of corrosion-resistant metal capillary round tubes.

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