Cold and hot heat preservation cabinet based on central air conditioning water system
Technical Field
The utility model relates to the field of refrigerated cabinets, in particular to a cold and hot heat preservation cabinet based on a central air conditioning water system.
Background
With the progress of modern life, people have increasingly high demands on quality of life. Meanwhile, with the acceleration of the pace of life, people need to get a beverage or food suitable for their own needs in a short time. For example, a beverage that is chilled in summer and a beverage or porridge that is warm in winter are required.
Existing thermal cabinets for refrigerating or heating beverages are generally divided into two main categories. The heat preservation cabinet only has single refrigeration or heating function, and can only use one function, and the function is too single; the other type is a heat preservation cabinet with integrated functions of refrigeration and heating, and the heat preservation cabinet is used for refrigeration in summer and heating in winter. However, if the heat pump is used for heating in winter, a large amount of condensed water exists on the evaporator, so that the ground, the room and the like are polluted; if electric heating is used, the power of the heat preservation cabinet is increased, and electricity is very wasted.
Therefore, a thermal insulation cabinet capable of solving the technical problems is needed.
Disclosure of Invention
In order to solve the technical problems, the utility model provides the cold and hot heat preservation cabinet based on the central air-conditioning water system, which is energy-saving, cost-saving and free of condensed water.
In order to achieve the above purpose, the technical scheme of the utility model is that the cold and hot heat preservation cabinet based on the central air-conditioning water system comprises a cabinet body, and a heat pump system and a storage room which are arranged in the cabinet body, wherein the heat pump system comprises an evaporator, a compressor, a four-way valve, a condenser and a throttle, the evaporator, the compressor, the four-way valve, the condenser and the throttle are mutually connected through a refrigerant pipe, a refrigerant is arranged in the refrigerant pipe, the cold and hot heat preservation cabinet comprises an evaporator heat exchange component, and the evaporator heat exchange component wraps the evaporator.
The preferred technical scheme, the evaporator heat exchange assembly comprises a heat exchange coil, and a water inlet pipe and a water outlet pipe which are communicated with two ends of the heat exchange coil.
The preferred technical scheme, the cabinet body includes heat pump accommodation chamber, cabinet wall and cabinet door, the heat pump accommodation chamber with the storeroom is not linked together, the cabinet wall is from outside to interior including heat preservation, functional layer, heat conduction layer.
According to a further technical scheme, the evaporator, the compressor, the four-way valve and the throttle are all arranged in the heat pump accommodating cavity, and the condenser is arranged in the functional layer.
According to a further technical scheme, an electronic valve is arranged on the water inlet pipe.
The preferable technical scheme comprises a heat preservation cabinet controller, wherein the heat preservation cabinet controller controls the heat pump system to operate, the electronic valve to be opened and closed, and the central air conditioner water system to supply water.
According to the preferred technical scheme, the bottom of the storage room is provided with a water outlet, the bottom of the cabinet body is provided with a water receiving disc, and the water outlet is communicated with the water receiving disc through a connecting pipe.
According to the preferred technical scheme, the bottom of the storage room is provided with a water outlet, the bottom of the cabinet body is provided with a heating bin, the heating bin comprises a water receiver and an electric heating assembly, and the water outlet is communicated with the water receiver through a connecting pipe.
The working principle of the utility model is as follows:
heating working conditions:
the controller of the heat preservation cabinet sends a water supply signal to the central air-conditioning water system, and the electronic valve is opened. At this time, the water inlet pipe sends hot water at 40 ℃ into the heat exchange coil, and the heat exchange coil heats the refrigerant in the evaporator to about 30 ℃, so that the original temperature of the evaporator is 30 ℃, and the temperature at the condenser easily reaches more than 45 ℃ after the heat pump system is adopted. The condenser is arranged in the functional layer of the cabinet body, and can directly and uniformly supply heat to the storage room through the heat transfer layer, so that the aim of uniformly heating is fulfilled.
Refrigeration working condition:
the controller of the heat preservation cabinet sends a water supply signal to the central air-conditioning water system, and the electronic valve is opened. At this time, the heat pump system switches the direction of the four-way valve, so that the original evaporator is actually changed into a condenser (actual), the original condenser is actually changed into an evaporator (actual), the water inlet pipe sends cold water with the temperature of 7-12 ℃ into the heat exchange coil, the heat exchange coil cools the refrigerant in the condenser (actual) to about 15 ℃, the original temperature of the condenser (actual) can be regarded as 15 ℃, and after the heat pump system passes through, the temperature of the evaporator (actual) can easily reach 0-5 ℃. The evaporator (actual) is arranged in the functional layer of the cabinet body, and can continuously cool the storage room through the heat transfer layer, thereby achieving the purpose of uniform refrigeration.
The utility model has the advantages that:
1. the utility model is based on the cold and hot water provided by the central air-conditioning water system, so that the original temperature of the condenser is about 15 ℃ in summer, the original temperature of the evaporator can reach 30 ℃ in winter, the power of the compressor can be reduced, the volume of the compressor is reduced, the power consumption is reduced, and the cost is saved;
2. according to the utility model, the original temperature of the evaporator can reach 30 ℃ in winter, so that dew condensation does not occur on the evaporator when the heat pump is used for heating, and condensed water does not flow out to pollute the ground;
3. the utility model does not use air cooling, reduces fan components and effectively reduces cost;
4. the original temperature of the condenser in summer is about 15 ℃, so that the problem that the condenser needs space to dissipate heat during refrigeration is solved, and the heat-insulating cabinet can be placed close to a wall, thereby saving space and being attractive.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, in which the drawings are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
The utility model is further described below with reference to the accompanying drawings and examples:
FIG. 1 is a side cross-sectional view of the present utility model;
FIG. 2 is a schematic diagram of an embodiment heating operation;
FIG. 3 is a schematic diagram of an embodiment of a refrigeration condition.
Wherein: 1. a heat pump system; 2. a storage room; 3. an evaporator heat exchange assembly; 4. a cabinet body; 11. an evaporator; 12. a compressor; 13. a four-way valve; 14. a condenser; 15. a throttle; 16. an evaporator (actual); 17. a condenser (actual); 31. a water inlet pipe; 32. a water outlet pipe; 33. a heat exchange coil.
Detailed Description
The above-described aspects are further described below in conjunction with specific embodiments. It should be understood that these examples are illustrative of the present utility model and are not intended to limit the scope of the present utility model. The implementation conditions used in the examples may be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are generally those in routine experiments.
Examples:
as shown in fig. 1, a cold and hot heat preservation cabinet based on a central air-conditioning water system comprises a cabinet body 4, a heat pump system 1 and a storage room 2 which are arranged in the cabinet body 4, wherein the heat pump system 1 comprises an evaporator 11, a compressor 12, a four-way valve 13, a condenser 14 and a throttle 15, the evaporator 11, the compressor 12, the four-way valve 13, the condenser 14 and the throttle 15 are connected with each other through refrigerant pipes, a refrigerant is arranged in each refrigerant pipe, the refrigerant pipe comprises an evaporator heat exchange assembly 3, and the evaporator heat exchange assembly 3 wraps the evaporator 11. The evaporator heat exchange assembly 3 comprises a heat exchange coil 33, and a water inlet pipe 31 and a water outlet pipe 32 which are communicated with two ends of the heat exchange coil 33.
The cabinet body 4 comprises a heat pump accommodating cavity, a cabinet wall and a cabinet door, wherein the heat pump accommodating cavity is not communicated with the storage room 2, and the cabinet wall comprises an insulating layer, a functional layer and a heat conduction layer from outside to inside.
The evaporator 11, the compressor 12, the four-way valve 13 and the throttle 15 are all arranged in the heat pump accommodating cavity, and the condenser 14 is arranged in the functional layer.
The inlet pipe 31 is provided with an electronic valve.
The heat pump system comprises a heat preservation cabinet controller, wherein the heat preservation cabinet controller controls the operation of the heat pump system 1, the opening and closing of an electronic valve and the water supply of a central air-conditioning water system.
The bottom of the storage room 2 is provided with a water outlet, the bottom of the cabinet body 4 is provided with a water receiving disc, and the water outlet is communicated with the water receiving disc through a connecting pipe.
The cabinet door adopts toughened glass with larger thickness, so that the heat preservation function can be realized, and articles in the heat preservation cabinet can be seen.
The application method of the embodiment comprises the following steps:
the water inlet pipe 31 and the water outlet pipe 32 are connected to the waterway of the central air-conditioning water system.
In winter, the waterway of the central air conditioning water system provides hot water at about 40 ℃. The hot water increases the original temperature of the evaporator 11 to 30 c through the evaporator heat exchange assembly 3. After passing through the heat pump system 1, the temperature at the condenser 14 reaches 45 deg.c, as shown in fig. 2. And the condenser 14 is provided in the functional layer of the cabinet 4, and can uniformly supply heat to the storage chamber 2 directly through heat transfer to the layer, thereby uniformly heating the storage chamber 2. At this time, since the temperature at the evaporator 11 is 30 deg.c, which is higher than the room temperature, condensed water is not generated to pollute the ground.
In summer, the waterway of the central air conditioning water system provides cold water at about 10 ℃. As shown in fig. 3, the heat pump system 1 switches the direction of the four-way valve 13 so that the original evaporator 11 is actually changed into the condenser (actual) 17, the original condenser 14 is actually changed into the evaporator (actual) 16, the water inlet pipe 31 sends cold water at 10 ℃ into the heat exchange coil 33, the heat exchange coil 33 cools the refrigerant in the condenser (actual) 17 to 15 ℃, and after passing through the heat pump system 1, the temperature of the evaporator (actual) 16 reaches 5 ℃. The evaporator (actual) 16 is arranged in the functional layer of the cabinet body 4, and can continuously cool the storage room 2 through the heat transfer layer, thereby achieving the purpose of uniform refrigeration. At this time, since the temperature of the condenser (actual) 17 is 15 ℃, heat dissipation is not required, and therefore the cabinet 4 can be seamlessly combined with peripheral furniture or a wall surface, and a heat dissipation space is not required.
The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.