Novel water chiller-heater unit for ship

Abstract

The utility model provides a novel marine cold and hot water unit which comprises a unit shell, and a heat exchanger, two water pumps, a condenser, a water-cooling frequency converter, two compressors and a connecting pipe which are arranged in the unit shell, two refrigerant channels and a cold and hot water channel are arranged in the heat exchanger, at least one water pump is connected with the heat exchanger through the connecting pipe, and the other water pump is connected with the water-cooling frequency converter. The condenser is connected with a water pump and a compressor through a connecting pipe, the two water-cooling frequency converters are arranged above the heat exchanger and the condenser respectively, and each compressor is connected with the condenser and the heat exchanger through a connecting pipe. The utility model aims to integrate the heat exchanger, the condenser, the compressor, the water cooling frequency converter, the expansion water tank, the water pump and the like in the unit shell, so that not only is the function of the water chiller-heater unit more perfect and powerful, but also the size of the water chiller-heater unit is reduced, and the water chiller-heater unit is compact in structure, small in size, small in occupied space and convenient to install.

Description

TECHNICAL FIELD

[0001] The utility model relates to ship equipment technical field, concretely relates to a novel marine cold and hot water unit. BACKGROUND

[0002] With the improvement of people's living standards, the cabin environment of various ships, especially the comfort requirement of the cruise cabin environment is higher and higher, so the demand of small marine air conditioning unit is more and more large. In order to make full use of natural resources, the existing marine air conditioner mainly uses river water and seawater as cold and hot source, and adopts heat pump technology to carry out summer refrigeration and winter heating.

[0003] In order to improve the navigation efficiency of the ship more effectively, therefore, all the ship equipment including the structure of marine air conditioning unit must be compact, the size of the shape, especially the smaller the area occupied, the better, the installation is simple, the use is convenient, the performance is reliable. And the marine air conditioner is powered by the generator set on the ship, so the starting current is required to be small, and the water temperature control fluctuation of the air conditioning unit is required to be not too large, so as to avoid affecting the comfort of indoor environment.

[0004] At present, the refrigerating capacity of the cold and hot water unit on the 30 meter level small and medium sized ship is generally 240000btu, which can be realized by using two 50%+50% cold and hot water units, but the size of the existing cold and hot water unit is generally 1200*1000*1000mm, and the external pipe is needed to be connected to the water pump, so the installation space required is very large, which leads to the installation layout of the small and medium sized ship with limited cabin space is not convenient. In addition, the existing marine cold and hot water unit mostly adopts coaxial condenser as seawater condenser, but the condenser has the hidden danger of internal freezing and cracking when the heat pump is heated or used in winter below 0 DEG C environment, so it has limitations. UTILITY MODEL CONTENTS

[0005] The utility model is carried out in order to solve the above problems, and aims at providing a novel marine cold and hot water unit.

[0006] The utility model provides a novel marine cold and hot water unit, has such characteristics, include: unit shell, and the heat exchanger, two water pumps, condenser, water cooling frequency converter, two compressors and connecting pipe built in unit shell,

[0007] The unit shell includes a bottom plate, a cuboid frame arranged on the bottom plate, and four side plates arranged on the cuboid frame,

[0008] The heat exchanger is arranged on the bottom plate, the heat exchanger has two refrigerant channels and cold and hot water channels inside, the outer wall of the heat exchanger is provided with refrigerant inlet and refrigerant outlet communicated with the refrigerant channel, and is provided with water inlet and water outlet communicated with the cold and hot water channel,

[0009] Two water pumps are arranged on the bottom plate and located in front of the heat exchanger, and at least one water pump is connected with the heat exchanger through a connecting pipe,

[0010] The condenser is arranged on the bottom plate, and the condenser is connected with a water pump and two compressors through connecting pipes,

[0011] Two water-cooled frequency converters are arranged above the heat exchanger and the condenser respectively,

[0012] The two compressors are arranged on the bottom plate, and each compressor is connected with a condenser and a heat exchanger through a connecting pipe.

[0013] In the novel marine cold and hot water unit provided by the utility model, the top of each water-cooled frequency converter is provided with a baffle.

[0014] In the novel marine cold and hot water unit provided by the utility model, the compressor is a direct-current brushless variable frequency compressor.

[0015] In the novel marine cold and hot water unit provided by the utility model, the condenser is a vertical square shell condenser, and buffer members are arranged between the shell walls of the condenser.

[0016] In the novel marine cold and hot water unit provided by the utility model, the heat exchanger is a plate type heat exchanger.

[0017] Effects of the utility model

[0018] According to the novel marine cold and hot water unit, the heat exchanger, the condenser, the compressor, the water-cooled frequency converter, the expansion water tank and the water pump are integrated in the unit shell, so that the function of the cold and hot water unit is more perfect and powerful, the size of the cold and hot water unit is reduced, and the structure is compact, small in size, small in land occupation and convenient to install. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the utility model;

[0020] Figure 2 is a structural schematic view of the inside of the side plate of the utility model;

[0021] Figure 3 is a structural schematic view of the inside of the side plate and the cuboid frame of the utility model;

[0022] Figure 4 is a structural schematic view of the inside of the side plate and the cuboid frame of the utility model from another perspective.

[0023] Mark explanation:

[0024] 10, unit shell; 11, bottom plate; 12, cuboid frame; 13, side plate; 14, mounting plate; 15, baffle; 20, heat exchanger; 30, water pump; 40, condenser; 50, water-cooled frequency converter; 60, compressor. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the following embodiments are combined with the drawings to specifically describe the utility model.

[0026] EMBODIMENT

[0027] Figure 1 is a structural schematic view of the utility model, Figure 2 is a structural schematic view of the inside of the side plate of the utility model, Figure 3 is a structural schematic view of the inside of the side plate and the cuboid frame of the utility model, Figure 4 is a structural schematic view of the inside of the side plate and the cuboid frame of the utility model from another perspective.

[0028] As Figures 1 to 4 shown, the embodiment provides a novel marine cold and hot water unit, which comprises a unit shell and a heat exchanger, two water pumps, a condenser, two water-cooled frequency converters, two compressors and a connecting pipe (not shown in the figure) which are built into the unit shell.

[0029] In the embodiment, the unit shell comprises a bottom plate, a cuboid frame arranged on the bottom plate and four side plates arranged on the cuboid frame. The unit shell can further comprise a mounting plate for facilitating the installation of the water pump, and the mounting plate is arranged on the bottom plate.

[0030] In the embodiment, a plurality of multi-way valves can be further arranged on the bottom plate, thereby facilitating the connection between the heat exchanger, the two water pumps, the condenser, the water-cooled frequency converter and the two compressors through the connecting pipe.

[0031] In the embodiment, the heat exchanger is arranged on the bottom plate, and the heat exchanger has two refrigerant channels and a cold and hot water channel inside. The outer wall of the condenser is provided with a refrigerant inlet and a refrigerant outlet which are in communication with the refrigerant channels, and is provided with a water inlet and a water outlet which are in communication with the cold and hot water channel. The heat exchanger is preferably a plate heat exchanger, and the plate heat exchanger adopts two independent refrigerant channels and one cold and hot water channel, so that the size of the heat exchanger is reduced and part of the energy is saved, and the practical effect of the cold and hot water unit of the utility model is better.

[0032] In the embodiment, the water outlet of the heat exchanger is connected with a drain pipe, thereby discharging the cooling water in the heat exchanger.

[0033] In the embodiment, the two water pumps are arranged on the bottom plate and located in front of the heat exchanger, and the two water pumps are a working water pump and a standby water pump respectively, and the working water pump is connected with the water inlet of the condenser through a connecting pipe. The two water pumps are preferably seawater pumps. The utility model can be applied to various types of ships, and the water pump is not additionally arranged, so that the water heater unit is smaller and more convenient to install, and one standby water pump is additionally arranged, thereby improving the stability of the utility model during use.

[0034] In the embodiment, the condenser is arranged on the bottom plate, and the condenser is connected with the working water pump through a connecting pipe. The condenser is preferably a vertical square shell condenser.

[0035] In the embodiment, a buffer is arranged between the shell walls of the condenser, and the buffer is preferably a sponge-like buffer medium. When the heat pump is heating or used in an environment below 0 DEG C in winter, that is, when ice is formed in the condenser, the buffer can prevent the pipes in the condenser from being cracked, thereby ensuring the practical effect and stability of the utility model during use.

[0036] In the embodiment, the condenser has a plurality of connecting ports, wherein two connecting ports are connected with the working water pump through connecting pipes, two connecting ports are connected with two compressors through connecting pipes respectively, and two connecting ports are connected with two refrigerant inlets of the heat exchanger through connecting pipes.

[0037] In the embodiment, two water-cooled frequency converters are arranged above the heat exchanger and the condenser respectively. Thus, the functions of frequency energy saving, equipment efficiency improvement, protection of the remaining equipment in the water pump and the unit shell, and intelligent control are realized.

[0038] In the embodiment, an expansion tank can also be arranged in the unit shell, thereby realizing the functions of stability, water replenishment, accommodation and compensation of the expansion and contraction amount of water, and pressure fluctuation buffering.

[0039] In the embodiment, the two compressors are arranged on the bottom plate, and each compressor is connected with the heat exchanger and the condenser through a connecting pipe. Each compressor can be connected with a refrigerant outlet on the plate heat exchanger through a connecting pipe.

[0040] In the embodiment, the compressor is preferably a direct-current brushless variable frequency compressor. The starting current of the compressor is 0, and the capacity reservation is not less than 20%, so that the utility model meets the new energy development concept.

[0041] In the embodiment, because the small and medium-sized ships have limited space for using air conditioners, the utility model preferably uses two compressors and a vertical square shell condenser to cooperate with a heat exchanger with two independent refrigerant channels, so that two independent cold and hot water units are realized. Moreover, the utility model integrates the two independent cold and hot water units into a whole, so that the utility model has compact structure, small size, small land occupation and convenient installation.

[0042] The air conditioning unit has the functions of refrigeration and heating.

[0043] When the refrigeration water is needed, the refrigerant is compressed into high-temperature and high-pressure gas by the compressor and then enters the vertical square shell condenser, while the seawater (or river water) is pumped to the vertical square shell condenser by the working water pump, the high-temperature and high-pressure refrigerant is cooled to condense into high-pressure refrigerant liquid, the high-pressure refrigerant liquid is reduced in pressure by the throttling expansion valve to become gas-liquid two-phase flow and then enters the plate heat exchanger, and the cooling water pumped by the water pump is subjected to heat exchange, the cooling water releases heat and reduces in temperature, so as to be sent to the ship indoor cooling air. The refrigerant absorbs the heat in the cooling water to evaporate into low-pressure gas, and finally is sucked into the compressor, so that a refrigeration cycle of the refrigerant is completed.

[0044] When the heating water is needed, the refrigerant is compressed into high-temperature and high-pressure gas by the compressor and then enters the plate heat exchanger, and the cooling water pumped by the water pump is subjected to heat exchange, the cooling water absorbs heat and increases in temperature, so as to be sent to the ship indoor heating air, while the high-temperature and high-pressure refrigerant is condensed into high-pressure liquid, the high-pressure refrigerant liquid is reduced in pressure by the throttling expansion valve to become gas-liquid two-phase flow and then enters the vertical square shell condenser, the seawater (or river water) is pumped to the vertical square shell condenser by the working water pump to release heat and then is discharged back to the sea (or river), the refrigerant absorbs heat to evaporate into low-pressure gas, and finally is sucked into the compressor again. So that a heating cycle of the refrigerant is completed.

[0045] Effects of the embodiment

[0046] The novel marine cold and hot water unit relates to the utility model, aims at integrating the heat exchanger, condenser, compressor, water-cooled frequency converter, expansion water tank and water pump in the unit shell, so that not only the function of the cold and hot water unit is more perfect and strong, but also the size of the cold and hot water unit is reduced, so that the structure is compact, the size is small, the land occupation is small and the installation is convenient.

[0047] The above embodiment is a preferred case of the utility model and does not limit the protection scope of the utility model.

Claims

1. A new type of marine water chiller-heater unit, characterized in that, It includes: The unit shell, and the heat exchanger, two water pumps, a condenser, two water-cooled frequency converters, two compressors, and connecting pipes built inside the unit shell, The unit shell includes a bottom plate, a cuboid frame arranged on the bottom plate, and four side plates arranged on the cuboid frame, The heat exchanger is arranged on the bottom plate, and the heat exchanger has two refrigerant channels and cold and hot water channels inside, and the outer wall of the heat exchanger is provided with a refrigerant inlet and a refrigerant outlet in communication with the refrigerant channels, and a water inlet and a water outlet in communication with the cold and hot water channels, Both the water pumps are arranged on the bottom plate and located in front of the heat exchanger, and at least one of the water pumps is connected with the heat exchanger through the connecting pipes, The condenser is arranged on the bottom plate, and the condenser is connected with one of the water pumps through the connecting pipes, Both the water-cooled frequency converters are arranged above the heat exchanger and the condenser, Both the compressors are arranged on the bottom plate, and each of the compressors is connected with one of the condensers and the heat exchanger through the connecting pipes.

2. The novel cold and hot water unit for ships according to claim 1, characterized in that: wherein The top end of each of the water-cooled frequency converters is provided with a baffle.

3. The novel cold and hot water unit for ships according to claim 1, characterized in that: wherein The compressor is a direct-current brushless variable-frequency compressor.

4. The novel cold and hot water unit for ships according to claim 1, characterized in that: wherein The condenser is a vertical square shell condenser, and buffer members are arranged between the shell walls of the condenser.

5. The novel cold and hot water unit for ships according to claim 1, characterized in that: wherein The heat exchanger is a plate heat exchanger.

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