Energy-saving water medium cooling and heating air conditioning system special for oxygen cabin

Abstract

The utility model discloses a special energy-saving water medium cooling and heating air conditioning system for an oxygen cabin, which belongs to the technical field of oxygen cabin air conditioners and comprises a cold water loop structure, a warm water loop structure, a heat exchange loop structure and a refrigeration circulation loop structure which are all arranged outside the cabin. The heat exchange loop structure is arranged in the cabin; the cold water loop structure and the warm water loop structure are respectively connected with the heat exchange loop structure through pipelines, the refrigeration circulation loop structure comprises a condenser and an evaporator, the condenser is independently connected with the warm water loop structure, and the evaporator is independently connected with the cold water loop structure; and a first electric two-way ball valve, a second electric two-way ball valve, a first electric three-way ball valve, a second electric three-way ball valve and a third water pump are respectively arranged on pipelines between the cold water loop structure and the heat exchange loop structure in the cabin as well as between the warm water loop structure and the heat exchange loop structure in the cabin. According to the utility model, the rapid switching of refrigeration and heating in the oxygen cabin and the rapid switching of the circulating water working mode are realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of oxygen chamber air conditioners, and particularly relates to an energy-saving water-medium heating and cooling air conditioner system special for oxygen chambers. Background Art

[0002] During the use of an oxygen chamber, there will be a stage of increasing pressure inside the chamber. Due to the increase in pressure inside the chamber, the ambient temperature inside the chamber will also increase, making people feel unbearably stuffy. Similarly, there will also be a stage of decreasing pressure inside the chamber. Due to the decrease in pressure inside the chamber, the ambient temperature inside the chamber will also decrease accordingly, making people feel cold. Therefore, an oxygen chamber needs to be equipped with an air conditioning system to achieve a basic constant temperature inside the chamber and improve the comfort of using the oxygen chamber. The oxygen chamber is a closed environment. If the common refrigerant of a general air conditioner enters the chamber, once leakage occurs, safety accidents are likely to occur. Therefore, the oxygen chamber air conditioner generally uses the water-medium method for heat exchange.

[0003] The existing oxygen chamber air conditioning systems have the following defects: Currently, the existing oxygen chamber air conditioning systems configured for oxygen chambers can only operate in one mode at the same time: refrigeration or heating. It also takes a certain amount of time to switch between the two modes. However, the switch from the pressure stabilization stage to the pressure reduction stage of the oxygen chamber is completed instantaneously. The existing air conditioners cannot meet the requirement of rapid refrigeration and heating conversion and cannot meet the requirement of the response speed of the working mode of the air conditioner for the oxygen chamber, that is, the existing oxygen chamber air conditioning systems cannot quickly switch between refrigeration and heating. In addition, the existing water-medium air conditioners have only one water tank, and the temperature of the circulating water is changed by heating or cooling the water in the water tank. The temperature change of the circulating water is slow and the switching of the working mode of the circulating water is slow. Content of the Utility Model

[0004] The utility model aims at the above problems, makes up for the deficiencies of the prior art, and provides an energy-saving water-medium heating and cooling air conditioner system special for oxygen chambers.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions.

[0006] An energy-saving water-medium heating and cooling air conditioner system special for oxygen chambers provided by the utility model includes a cold water circuit structure, a warm water circuit structure, a heat exchange circuit structure, and a refrigeration cycle circuit structure. The cold water circuit structure, the warm water circuit structure, and the refrigeration cycle circuit structure are all arranged outside the chamber, and the heat exchange circuit structure is arranged inside the chamber. The cold water circuit structure and the warm water circuit structure are independent circuit structures. The cold water circuit structure and the warm water circuit structure are respectively connected to the heat exchange circuit structure inside the chamber through pipelines. The refrigeration cycle circuit structure includes a condenser and an evaporator. The condenser is separately connected to the warm water circuit structure, and the evaporator is separately connected to the cold water circuit structure. First electric two-way ball valves, second electric two-way ball valves, first electric three-way ball valves, second electric three-way ball valves, and a third water pump are respectively arranged on the pipelines between the cold water circuit structure, the warm water circuit structure, and the heat exchange circuit structure inside the chamber.

[0007] Preferably, the cold water circuit structure includes a cold water tank and a first water pump. The cold water tank is connected to the first water pump through a pipeline, and the first water pump is connected to the refrigeration cycle circuit structure through a pipeline; the warm water circuit structure includes a warm water tank and a second water pump. The warm water tank is connected to the second water pump through a pipeline, and the second water pump is connected to the refrigeration cycle circuit structure through a pipeline.

[0008] Preferably, the heat exchange circuit structure includes a first fan and a surface cooler. The water inlet of the surface cooler is connected to a third water pump through a pipeline, the third water pump is connected to a second electric three-way ball valve through a pipeline, the water outlet of the surface cooler is connected to a first electric three-way ball valve through a pipeline, and the first fan is arranged beside the surface cooler for air-cooling the surface cooler; the first electric three-way ball valve and the second electric three-way ball valve are respectively connected to the first water pump and the cold water tank through a first electric two-way ball valve, and the first electric three-way ball valve and the second electric three-way ball valve are respectively connected to the second water pump and the warm water tank through a second electric two-way ball valve.

[0009] Preferably, an electric heater is arranged in the warm water tank.

[0010] Preferably, the refrigeration cycle circuit structure further includes a compressor, a dryer filter, and an expansion valve. The compressor, condenser, dryer filter, expansion valve, and evaporator are connected in sequence through pipelines to form a closed loop; a second fan is arranged beside the condenser for forced air-cooling of the condenser.

[0011] Preferably, a plate heat exchanger is arranged in the condenser.

[0012] Preferably, a low-pressure pressure gauge and a high-pressure pressure gauge are respectively arranged on the pipelines at both ends of the compressor, and a high-low pressure switch is also connected between both ends of the compressor.

[0013] Advantages of the present utility model:

[0014] The oxygen chamber special energy-saving water medium heating and cooling air-conditioning system provided by the present utility model works in cooperation with the heat exchange circuit structure in the chamber through the mutually independent cold water circuit structure and warm water circuit structure, and by combining and arranging the first electric two-way ball valve and the second electric two-way ball valve, the first electric three-way ball valve and the second electric three-way ball valve between the cold water circuit structure, the warm water circuit structure and the heat exchange circuit structure in the chamber; the rapid switching of in-chamber refrigeration and heating of the oxygen chamber and the rapid switching of the circulating water working mode are realized. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of an oxygen chamber special energy-saving water medium heating and cooling air-conditioning system of the present utility model.

[0016] Figure 2It is the state diagram of the first operating mode of an energy-saving water-medium heating and cooling air-conditioning system dedicated to a hyperbaric oxygen chamber of the present utility model.

[0017] Figure 3 It is the state diagram of the second operating mode of an energy-saving water-medium heating and cooling air-conditioning system dedicated to a hyperbaric oxygen chamber of the present utility model.

[0018] Figure 4 It is the state diagram of the third operating mode of an energy-saving water-medium heating and cooling air-conditioning system dedicated to a hyperbaric oxygen chamber of the present utility model.

[0019] Markings in the figure: 1 is a low-pressure pressure gauge, 2 is a compressor, 3 is a high-pressure pressure gauge, 4 is a fourth temperature sensor, 5 is a condenser, 6 is a second water pump, 7 is an electric heater, 8 is a warm water tank, 9 is a second temperature sensor, 10 is a second electric two-way ball valve, 11 is a second electric three-way ball valve, 12 is a third water pump, 13 is inside the chamber, 14 is a high and low pressure switch, 15 is a second fan, 16 is an evaporator, 17 is a drying filter, 18 is an expansion valve, 19 is a third temperature sensor, 20 is a first electric three-way ball valve, 21 is a first water pump, 22 is a first temperature sensor, 23 is a cold water tank, 24 is a first electric two-way ball valve, 25 is a first fan, 26 is a surface cooler. Detailed implementation manners

[0020] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. It should be understood that the specific implementation manners described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] Combined with Figure 1 As shown, an energy-saving water-medium heating and cooling air-conditioning system dedicated to a hyperbaric oxygen chamber provided by an embodiment of the present utility model includes a cold water circuit structure, a warm water circuit structure, a heat exchange circuit structure and a refrigeration cycle circuit structure. The cold water circuit structure, the warm water circuit structure and the refrigeration cycle circuit structure are all arranged outside the chamber, and the heat exchange circuit structure is arranged inside the chamber 13; the cold water circuit structure and the warm water circuit structure are independent circuit structures, and the cold water circuit structure and the warm water circuit structure are respectively connected to the heat exchange circuit structure inside the chamber 13 through pipelines. The refrigeration cycle circuit structure includes a condenser 5 and an evaporator 16. The condenser 5 is separately connected to the warm water circuit structure, and the evaporator 16 is separately connected to the cold water circuit structure; first electric two-way ball valves 24, second electric two-way ball valves 10, first electric three-way ball valves 20, second electric three-way ball valves 11 and third water pumps 12 are respectively arranged on the pipelines between the cold water circuit structure, the warm water circuit structure and the heat exchange circuit structure inside the chamber 13.

[0022] Specifically, the cold water circuit structure includes a cold water tank 23 and a first water pump 21. The cold water tank 23 is connected to the first water pump 21 through a pipeline, and the first water pump 21 is connected to the refrigeration cycle circuit structure through a pipeline; the warm water circuit structure includes a warm water tank 8 and a second water pump 6. The warm water tank 8 is connected to the second water pump 6 through a pipeline, and the second water pump 6 is connected to the refrigeration cycle circuit structure through a pipeline; the cold water tank 23 is used to store cold water, and the warm water tank 8 is used to store hot water.

[0023] Specifically, the heat exchange circuit structure includes a first fan 25 and a surface cooler 26. The water inlet of the surface cooler 26 is connected to a third water pump 12 through a pipeline, the third water pump 12 is connected to a second electric three-way ball valve 11 through a pipeline, the water outlet of the surface cooler 26 is connected to a first electric three-way ball valve 20 through a pipeline, and the first fan 25 is arranged beside the surface cooler 26 for air-cooling the surface cooler 26; the first electric three-way ball valve 20 and the second electric three-way ball valve 11 are respectively connected to the first water pump 21 and the cold water tank 23 through a first electric two-way ball valve 24, and the first electric three-way ball valve 20 and the second electric three-way ball valve 11 are respectively connected to the second water pump 6 and the warm water tank 8 through a second electric two-way ball valve 10; an electric heater 7 is arranged in the warm water tank 8.

[0024] Specifically, the refrigeration cycle circuit structure further includes a compressor 2, a dryer filter 17, and an expansion valve 18. The compressor 2 is connected to a condenser 5, the condenser 5 is connected to the dryer filter 17, the dryer filter 17 is connected to the expansion valve 18, the expansion valve 18 is connected to an evaporator 16, and the evaporator 16 is connected to the compressor 2, that is, the compressor 2, the condenser 5, the dryer filter 17, the expansion valve 18, and the evaporator 16 are sequentially connected through pipelines to form a closed loop; a second fan 15 is arranged beside the condenser 5. The function of the second fan 15 is to forcibly air-cool the condenser 5 by turning on the second fan 15 when the water temperature in the warm water tank 8 reaches the set temperature or when the water-cooling method is not sufficient to achieve the condensation function of the condenser 5. A plate heat exchanger is arranged in the condenser 5. Through the arranged plate heat exchanger, heat exchange between the condenser 5 and the warm water tank 8 is realized, and the waste heat of the system can be fully utilized, saving energy and protecting the environment; low-pressure pressure gauges 1 and high-pressure pressure gauges 3 are respectively arranged on the pipelines at both ends of the compressor 2, and a high-low pressure switch 14 is also connected between the two ends of the compressor.

[0025] In addition, the special energy-saving water medium heating and cooling air-conditioning system for oxygen chambers of the present utility model is also provided with a first temperature sensor 22, a second temperature sensor 9, a third temperature sensor 19, and a fourth temperature sensor 4; the first temperature sensor 22 is installed in the cold water circuit structure for monitoring the water temperature of the cold water circuit, the second temperature sensor 9 is installed in the warm water circuit structure for monitoring the water temperature of the warm water circuit, and the third temperature sensor 19 is installed on the outlet pipeline of the surface cooler 26 for monitoring the water temperature of the heat exchange circuit; the first temperature sensor 22, the second temperature sensor 9, and the third temperature sensor 19 realize the automatic control of the switches of the first fan 25 and the third water pump 12 by linking with the environmental temperature sensor in the cabin 13, and the fourth temperature sensor 4 can realize the automatic control of the start and stop of the compressor 2 by linking with the first temperature sensor 22, the second temperature sensor 9, and the third temperature sensor 19.

[0026] The three operating modes of the special energy-saving water medium heating and cooling air-conditioning system for oxygen chambers of the present utility model are described as follows:

[0027] (1) The first operating mode includes: preparation for cooling and heating in the cabin 13, as Figure 2 shown in the state diagram of the first operating mode; among them, valve state: the first electric two-way ball valve 24 disconnects both ends, and the first electric two-way ball valve 24 with both ends disconnected is represented by a dotted line, the second electric two-way ball valve 10 connects both ends, the first electric three-way ball valve 20 connects ports ② and ③, and the port ① of the first electric three-way ball valve 20 disconnected from ports ② and ③ is represented by a dotted line, the second electric three-way ball valve 11 connects ports ② and ③, and the port ① of the second electric three-way ball valve 11 disconnected from ports ② and ③ is represented by a dotted line; in this operating mode, the refrigeration cycle circuit structure operates normally.

[0028] Refrigeration: The third water pump 12 pumps the circulating water in the cold water tank 23 through the pipeline and sends it into the surface cooler 26 in the cabin 13, the first fan 25 blows the surface cooler 26, the cabin 13 is cooled, the return water of the surface cooler 26 flows through the first electric three-way ball valve 20, and then enters the evaporator 16 through the first water pump 21 for heat exchange and cooling and then flows back to the cold water tank 23.

[0029] Heating preparation: The second water pump 6 pumps the circulating water in the warm water tank 8 through the pipeline and sends it into the condenser 5 for heat exchange, absorbs heat, and then flows back to the warm water tank 8 until the water temperature in the warm water tank 8 reaches the set value.

[0030] (2) The second operating mode includes: ordinary heating and cooling preparation in the cabin 13, as Figure 3The state diagram of the second operating mode shown; among them, valve state: the first electric two-way ball valve 24 connects both ends, the second electric two-way ball valve 10 disconnects both ends, and the second electric two-way ball valve 10 with both ends disconnected is represented by a dotted line. The first electric three-way ball valve 20 connects ports ① and ②, and the port ③ of the first electric three-way ball valve 20 disconnected from ports ① and ② is represented by a dotted line. The second electric three-way ball valve 11 connects ports ① and ②, and the port ③ of the second electric three-way ball valve 11 disconnected from ports ① and ② is represented by a dotted line. In this operating mode, the refrigeration cycle circuit structure operates normally.

[0031] Ordinary heating: The third water pump 12 pumps out the circulating water in the warm water tank 8 through a pipeline and sends it to the surface cooler 26 in the cabin 13. The first fan 25 blows the surface cooler 26, and the cabin 13 is heated. The return water of the surface cooler 26 flows through the first electric three-way ball valve 20 and then enters the condenser 5 through the second water pump 6 for heat exchange and cooling, and then flows back to the warm water tank 8.

[0032] Refrigeration preparation: The first water pump 21 pumps out the circulating water in the cold water tank 23 through a pipeline and sends it to the evaporator 16 for heat exchange. After absorbing heat, it flows back to the cold water tank 23 until the water temperature in the cold water tank 23 reaches the set value.

[0033] (3) The third operating mode includes: electric auxiliary heating and refrigeration preparation in the cabin 13, as Figure 4 shown in the state diagram of the third operating mode; the only difference between the electric auxiliary heating in this operating mode and the ordinary heating in the second operating mode is that the electric heater 7 in the warm water tank 8 is turned on to achieve the purpose of rapid heating.

[0034] It can be understood that the above specific description of the present invention is only for explaining the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those of ordinary skill in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effect; as long as it meets the use requirements, it is within the protection scope of the present invention.

Claims

1. An energy-saving water-based cooling and heating air conditioning system for oxygen cabins, characterized in that: It includes a cold water loop structure, a warm water loop structure, a heat exchange loop structure and a refrigeration cycle loop structure. The cold water loop structure, the warm water loop structure and the refrigeration cycle loop structure are all arranged outside the cabin, and the heat exchange loop structure is arranged inside the cabin; the cold water loop structure and the warm water loop structure are independent of each other, and the cold water loop structure and the warm water loop structure are respectively connected to the heat exchange loop structure in the cabin through pipelines, and the refrigeration cycle loop structure includes a condenser and an evaporator, the condenser is separately connected to the warm water loop structure, and the evaporator is separately connected to the cold water loop structure; a first electric two-way ball valve, a second electric two-way ball valve, a first electric three-way ball valve, a second electric three-way ball valve and a third water pump are respectively arranged on the pipelines between the cold water loop structure, the warm water loop structure and the heat exchange loop structure in the cabin.

2. The energy-saving water-based cooling and heating air conditioning system for oxygen cabins according to claim 1 is characterized in that: The cold water circuit structure includes a cold water tank and a first water pump, the cold water tank is connected to the first water pump through a pipeline, and the first water pump is connected to the refrigeration circulation circuit structure through a pipeline; the warm water circuit structure includes a warm water tank and a second water pump, the warm water tank is connected to the second water pump through a pipeline, and the second water pump is connected to the refrigeration circulation circuit structure through a pipeline.

3. The energy-saving water-based cooling and heating air conditioning system for oxygen cabins according to claim 2 is characterized in that: The heat exchange circuit structure includes a first fan and a surface cooler. The water inlet of the surface cooler is connected to the third water pump through a pipeline, the third water pump is connected to the second electric three-way ball valve through a pipeline, and the water outlet of the surface cooler is connected to the first electric three-way ball valve through a pipeline. The first fan is arranged next to the surface cooler for air cooling of the surface cooler; the first electric three-way ball valve and the second electric three-way ball valve are respectively connected to the first water pump and the cold water tank through the first electric two-way ball valve, and the first electric three-way ball valve and the second electric three-way ball valve are respectively connected to the second water pump and the warm water tank through the second electric two-way ball valve.

4. The energy-saving water-based cooling and heating air conditioning system for oxygen cabins according to claim 2 is characterized in that: An electric heater is arranged in the warm water tank.

5. The energy-saving water-based cooling and heating air conditioning system for oxygen cabins according to claim 1 is characterized by: The refrigeration cycle structure also includes a compressor, a drying filter, and an expansion valve. The compressor, condenser, drying filter, expansion valve, and evaporator are connected in sequence through pipelines to form a closed loop; a second fan is arranged next to the condenser to achieve forced air cooling for the condenser.

6. The energy-saving water-based cooling and heating air conditioning system for oxygen cabins according to claim 1 is characterized in that: A plate heat exchanger is arranged in the condenser.

7. The energy-saving water-based cooling and heating air conditioning system for oxygen cabins according to claim 5 is characterized by: A low-pressure gauge and a high-pressure gauge are respectively provided on the pipelines at both ends of the compressor, and a high- and low-pressure switch is also connected between the two ends of the compressor.

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