Temperature and humidity adjusting air conditioner and temperature and humidity energy-saving adjusting system applying same

Abstract

The utility model discloses a humiture adjusting air conditioner and a humiture energy-saving adjusting system using the same, and belongs to the technical field of air conditioning, the humiture adjusting air conditioner comprises a case, a first energy recovery heat exchanger, a surface air cooler and an exhaust fan, the case is provided with an air supply outlet and an air return inlet, the plate type first energy recovery heat exchanger is arranged in the case, and the surface air cooler is arranged in the case. The first energy recovery heat exchanger comprises a first heat exchange channel and a second heat exchange channel, the return air inlet is connected with the air inlet end of the exhaust fan through the first heat exchange channel, the air supply outlet is connected with the air outlet end of the exhaust fan through the second heat exchange channel, the surface air cooler is arranged at the air inlet end of the exhaust fan, and the air inlet end of the exhaust fan is connected with the air outlet end of the exhaust fan through the surface air cooler. Indoor temperature and humidity adjustment is achieved in an internal circulation mode under low energy consumption.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to a temperature and humidity regulating air conditioner and a temperature and humidity energy-saving regulating system applying the same. Background Art

[0002] At present, in the fields of logistics warehousing, breeding and industrial production, etc., it is necessary to control the air temperature and flow rate in a closed space to meet the environmental requirements of storage, production or breeding. For example, in the cool storage of pharmaceutical warehousing, the required temperature is 0-20°C and the relative humidity is required to be 35%-75%. Because the cooling load of the cool storage of pharmaceutical warehousing is usually very large, large water chillers are generally used for centralized cooling, and chilled water terminals are used in the warehouse to control temperature and humidity. Since the temperature in the warehouse needs to be stabilized at about 18°C and the relative humidity is kept below 70%, the dew point of the air in the warehouse is already relatively low. Under the conventional supply and return water conditions of 7-12°C, the dehumidification ability is very poor. And because the supply air relative humidity is usually about 95%, the control of relative humidity is a major problem. Especially in the transitional season, the wet load is very large, and high-energy-consuming measures such as additional industrial dehumidifiers and electric heating reheating are required to solve the problem.

[0003] The patent application with the publication number of CN113303231A discloses a heat recovery ventilation air conditioner unit for livestock and poultry breeding, including a unit housing. Inside the unit housing, there is a heat exchange core body and a partition. The heat exchange core body and the partition divide the internal space of the unit housing into a fresh air fan chamber, an indoor exhaust air chamber, an outdoor fresh air chamber and an exhaust air fan chamber. A fresh air fan and an exhaust air fan are respectively installed in the fresh air fan chamber and the exhaust air fan chamber. One opposite side of the heat exchange core body is respectively communicated with the indoor exhaust air chamber and the exhaust air fan chamber, and the other opposite side is respectively communicated with the fresh air fan chamber and the outdoor fresh air chamber. The unit housing also has a fresh air bypass unit, an exhaust air bypass unit and a return air bypass unit. This heat recovery air conditioner unit reduces energy consumption by using heat recovery. However, its dehumidification ability is no different from that of an air handling unit, and the supply air dew point temperature and supply air relative humidity will be even higher, which is not suitable for the occasion of a cool storage with high dehumidification requirements. Summary of the Invention

[0004] One of the purposes of the utility model is to provide a temperature and humidity regulating air conditioner, which has the effect of high-efficiency dehumidification under the condition of unchanged cold source grade. Cooperating with a bypass air valve, it can automatically adjust the refrigeration capacity and dehumidification capacity according to the heat and moisture load of the air conditioner, solving the problems of insufficient dehumidification and high temperature control energy consumption in pharmaceutical cool storages or similar air conditioner application occasions.

[0005] To achieve the above-mentioned invention purpose, the technical solution adopted by the utility model is as follows:

[0006] A temperature and humidity regulating air conditioner, comprising a chassis, a first energy recovery heat exchanger, a surface cooler and an exhaust fan. An air supply outlet and an air return outlet are provided on the chassis. The first energy recovery heat exchanger is arranged inside the chassis. The first energy recovery heat exchanger comprises a first heat exchange channel and a second heat exchange channel. The first heat exchange channel connects the air return outlet and the air inlet end of the exhaust fan, and the second heat exchange channel connects the air supply outlet and the air outlet end of the exhaust fan. The surface cooler is arranged on the air inlet end of the exhaust fan, and the indoor temperature and humidity are regulated in a low-energy consumption manner through an internal circulation method.

[0007] Preferably, the first energy recovery heat exchanger is a plate type energy recovery heat exchanger, which has high heat exchange efficiency, no moving parts and a long service life.

[0008] Preferably, the first heat exchange channel and the second heat exchange channel are arranged in an alternating manner, which improves the heat exchange efficiency and simplifies the structure.

[0009] Preferably, the surface cooler is of a fin type structure, and the heat exchange effect can be increased by increasing the number of tube rows and improving the fin form.

[0010] Preferably, it further comprises an air volume valve, which is arranged between the first energy recovery heat exchanger and the surface cooler and is used to control the air volume passing through the first energy recovery heat exchanger and the surface cooler, and the dehumidification amount is adjusted by adjusting the air volume.

[0011] Preferably, the air supply outlet and the air return outlet are respectively arranged on two adjacent side walls of the chassis, and the air supply outlet is arranged upward or horizontally, which is convenient for the indoor air circulation and dehumidification.

[0012] Preferably, the exhaust fan is a centrifugal fan, which can be of a direct motor connection type or a belt drive type according to the site, and can also be single or multiple units in parallel to meet the required air volume for use.

[0013] The second object of the present utility model is to provide a temperature and humidity regulating air conditioner, which solves the problem of large energy consumption in regulating the indoor air temperature and humidity in the existing warehouse.

[0014] To achieve the above-mentioned invention object, the technical solution adopted by the present utility model is as follows:

[0015] A temperature and humidity energy-saving regulating system, comprising the temperature and humidity regulating air conditioner, a cool storage and an air handling unit. The temperature and humidity regulating air conditioner and the air handling unit are arranged in the cool storage. The numbers of the temperature and humidity regulating air conditioner and the air handling unit are proportionally configured according to the heat and moisture load of the cool storage, so as to meet the requirements of temperature and humidity regulation and reduce the layout cost.

[0016] Further, the air handling unit of the air conditioner includes a cabinet, a return air device, a second energy recovery heat exchanger, an exhaust air device, a supply air device, and an intake air device. The second energy recovery heat exchanger is disposed in the cabinet. The exhaust air device is communicated with the return air device through the second energy recovery heat exchanger. The intake air device is communicated with the supply air device through the second energy recovery heat exchanger, so as to reduce the energy consumption of air circulation.

[0017] Preferably, a temperature and humidity adjustment device is further included. The temperature and humidity adjustment device is disposed in the cool storage, and is used to control the temperature and humidity of the entire cool storage.

[0018] The beneficial effects of the present utility model are as follows:

[0019] (1) The temperature and humidity adjustment air conditioner includes a first energy recovery heat exchanger, a surface cooler, an exhaust fan, and air supply outlets and air return inlets arranged on the chassis. The indoor air entering from the air return inlet and the air to be supplied are heat-exchanged through the first energy recovery heat exchanger, so that the sensible heat exchange is performed between the air entering the first energy recovery heat exchanger and the air sent out by the first energy recovery heat exchanger, the temperature of the air entering the surface cooler is reduced, and its relative humidity is increased to 100%. In this way, the dehumidification ability of the surface cooler is greatly improved, and at the same time, the temperature of the exhausted air is adjusted, and the relative humidity of the supplied air is reduced. The air conditioner uses the internal air circulation method for efficient dehumidification, without using a special dehumidifier. The dehumidification efficiency of the air conditioner is high, and the relative humidity of the supplied air is reduced, directly meeting the indoor air temperature use requirements.

[0020] (2) The temperature and humidity adjustment air conditioner is further provided with an air volume valve. The air volume valve is arranged between the first energy recovery heat exchanger and the surface cooler. The air volume valve communicates the air outside the chassis to the surface cooler. The air volume of the air entering the surface cooler through the first energy recovery heat exchanger can be adjusted through the air volume valve, so as to directly reduce the dehumidification amount of the air. The refrigerating capacity is increased due to the increased heat exchange temperature difference of the surface cooler, which plays a role in controlling the dehumidification amount and the refrigerating capacity, and reduces the energy consumption.

[0021] (3) The temperature and humidity energy-saving adjustment system controls the temperature and humidity of the air in the cool storage by installing an air handling unit of the air conditioner and a temperature and humidity adjustment air conditioner in the cool storage. According to different heat and humidity loads, the corresponding number of air handling units of the air conditioner and the temperature and humidity adjustment air conditioner is controlled to start, and the opening degree of the air volume valve of the temperature and humidity adjustment air conditioner is adjusted. The temperature control purpose of the cool storage can be achieved without adding other dehumidification means such as industrial dehumidifiers, so as to achieve the purpose of reducing energy consumption and reducing the structural layout cost. Description of the Drawings

[0022] Figure 1 It is a composition diagram of the temperature and humidity adjustment air conditioner provided by the present utility model;

[0023] Figure 2 This figure shows the composition of the temperature and humidity regulation system provided by the present utility model.

[0024] Reference numerals:

[0025] 1. Cool storage; 2. Temperature and humidity regulation air conditioner; 21. Chassis; 22. First energy recovery heat exchanger; 23. Surface cooler; 24. Exhaust fan; 26. Air supply outlet; 27. Air return inlet; 3. Air handling unit; 31. Cabinet; 32. Air return device; 33. Second energy recovery heat exchanger; 34. Air inlet device; 35. Air guide hood; 36. Exhaust device; 37. Temperature regulation device; 38. Air supply device. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment 1

[0028] As Figure 1 - Figure 2 shown, the present utility model discloses a temperature and humidity regulation air conditioner 2, which includes a chassis 21, a first energy recovery heat exchanger 22, a surface cooler 23 and an exhaust fan 24. An air supply outlet 26 and an air return inlet 27 are provided on the chassis 21. The first energy recovery heat exchanger 22 is arranged inside the chassis 21. The first energy recovery heat exchanger 22 includes a first heat exchange channel and a second heat exchange channel. The first heat exchange channel connects the air return inlet 27 and the air inlet end of the exhaust fan 24, and the second heat exchange channel connects the air supply outlet 26 with the air outlet end of the exhaust fan 24. The surface cooler 23 is arranged on the air inlet end of the exhaust fan 24, and the indoor air is circulated through the first energy recovery heat exchanger 2.

[0029] It further includes an air volume valve, which is arranged between the first energy recovery heat exchanger 22 and the surface cooler 23 and is used to control the air volume passing through the first energy recovery heat exchanger 22 and the surface cooler 23.

[0030] Preferably, the first energy recovery heat exchanger 22 is a plate sensible heat energy recovery heat exchanger.

[0031] Preferably, the first heat exchange channel and the second heat exchange channel are arranged in an alternating manner, and the flow areas in the first heat exchange channel and the second heat exchange channel should not be too small to avoid increasing the air pressure drop of the energy recovery heat exchanger.

[0032] Preferably, the surface cooler 23, which is a type of finned heat exchanger, can enhance the heat exchange effect by increasing the number of tube rows and improving the fin form. It has flexible configuration. The principle of the surface cooler 23 is to let the heat medium, refrigerant or refrigeration working medium flow through the inner cavity of the metal pipe, while the air to be processed flows through the outer wall of the metal pipe for heat exchange to achieve the purpose of heating or cooling the air. Used here, by utilizing the heat exchange and refrigeration capacity of the surface cooler 23, the temperature of the passing air can be reduced, and at the same time, the water in the air condenses into water, reducing the moisture in the air.

[0033] Preferably, the air supply outlet 26 and the air return outlet 27 are respectively arranged on two adjacent side walls of the chassis 21. The air supply outlet 26 is arranged upward or horizontally, the air return outlet 27 is communicated with the first heat exchange channel, the air supply outlet 26 is communicated with the second heat exchange channel, and the air supply outlet 26 and the air return outlet 27 are arranged staggeredly to improve the dehumidification efficiency of the indoor air.

[0034] Among them, the exhaust fan 24 is a centrifugal fan, which can be of the direct motor connection type or the belt drive type according to the structure, and can be single or multiple in parallel.

[0035] The working process of the temperature and humidity adjustment air conditioner is as follows:

[0036] Under the suction of the exhaust fan 24, the air enters the first energy recovery heat exchanger 22 from the air return outlet 27, contacts the surface cooler 23 via the first heat exchange channel. The surface cooler 23 contacts the return air to cool and dehumidify, and uses the surface cooler 23 to condense the moisture in the air to reduce the humidity in the return air. When the cooled air passes through the second heat exchange channel, it undergoes sensible heat exchange with the air in the first heat exchange channel, and then is discharged outward from the air supply outlet 26. The air passes through the temperature and humidity adjustment air conditioner 2 in a cycle to complete dehumidification and temperature reduction. The dehumidification capacity is large and the temperature and humidity of the discharged air directly meet the standards.

[0037] Embodiment 2

[0038] As Figure 2 shown, the present invention also discloses a temperature and humidity energy-saving adjustment system, including the temperature and humidity adjustment air conditioner 2, the cool storage 1 and the air handling unit 3. The temperature and humidity adjustment air conditioner 2 and the air handling unit 3 are arranged in the cool storage 1, and a temperature and humidity control device is adopted to control the temperature and humidity adjustment air conditioner 2 and the air handling unit 3. According to different heat and moisture loads, the number of corresponding air handling units 3 and temperature and humidity adjustment air conditioners 2 to be started is controlled, and the opening degree of the air volume valve of the temperature and humidity adjustment air conditioner 2 is adjusted. Without adding other dehumidification means such as industrial dehumidifiers, the temperature control purpose of the cool storage 1 can be achieved, and the purposes of reducing energy consumption and reducing the structural layout cost can be achieved.

[0039] Furthermore, the air-conditioning air handling unit 3 includes a cabinet 31, a return air device 32, a second energy recovery heat exchanger 33, an exhaust air device 36, a supply air device 38, and an intake air device 34. The second energy recovery heat exchanger 33 is disposed in the cabinet 31. The exhaust air device 36 communicates with the return air device 32 through the second energy recovery heat exchanger 33. The intake air device 34 communicates with the supply air device 38 through the second energy recovery heat exchanger 33. The second energy recovery heat exchanger 33 equalizes the temperature and humidity of the internal and external air in a non-energy-consuming manner, greatly reducing the energy consumption of air conditioning. A wind guide cover 35 is further provided on the intake air device 34, and the wind guide cover 35 is used to converge and accelerate the fresh air intake, increasing the flow rate of the intake air.

[0040] A temperature adjustment device 37 is also provided in the cool storage 1. The temperature adjustment device 37 is disposed between the supply air device 38 and the second energy recovery heat exchanger 33 for adjusting the temperature and humidity in the cool storage 1.

[0041] The working process of the temperature and humidity energy-saving adjustment system is as follows:

[0042] When the thermal and moisture loads are relatively large (such as in summer), the air-conditioning air handling unit 3 is preferentially and sequentially started. If the temperature of the cool storage 1 still cannot reach the target set value even when all the air-conditioning air handling units 3 are running, the temperature and humidity adjustment air conditioner 2 is sequentially started. At this time, when each temperature and humidity adjustment air conditioner 2 is running, the air volume valve is in the open state to maximize the cooling capacity of the temperature and humidity adjustment air conditioner 2;

[0043] When the thermal load is small and the moisture load is large (such as during the changing season), the temperature and humidity adjustment air conditioner 2 is preferentially started. At this time, when each temperature and humidity adjustment air conditioner 2 is running, its air volume valve will be automatically adjusted according to the humidity in the storage. When the valve opening is too low (for example, 5% opening), and the relative humidity still exceeds the standard, it is determined that the relative humidity adjustment target cannot be achieved. At this time, one more temperature and humidity adjustment air conditioner 2 is started, and so on to complete the humidity adjustment requirements.

[0044] According to the disclosure and teachings of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above. Some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A temperature and humidity regulating air conditioner, characterized in that: The invention comprises a case (21), a first energy recovery heat exchanger (22), a surface cooler (23) and an exhaust fan (24); the case (21) is provided with an air supply port (26) and an air return port (27); the first energy recovery heat exchanger (22) is arranged in the case (21); the first energy recovery heat exchanger (22) comprises a first heat exchange channel and a second heat exchange channel; the first heat exchange channel connects the air return port (27) and the air inlet end of the exhaust fan (24); the second heat exchange channel connects the air supply port (26) and the air outlet end of the exhaust fan (24); the surface cooler (23) is arranged on the air inlet end of the exhaust fan (24); The first energy recovery heat exchanger (22) is a plate-type energy recovery heat exchanger; The first heat exchange channel and the second heat exchange channel are arranged alternately; It also includes an air volume valve, which is arranged between the first energy recovery heat exchanger (22) and the surface cooler (23) and is used to control the air volume passing through the first energy recovery heat exchanger (22) and the surface cooler (23).

2. The temperature and humidity regulating air conditioner according to claim 1, characterized in that: The surface cooler (23) is a fin-type heat exchanger.

3. The temperature and humidity regulating air conditioner according to claim 1, characterized in that: The air supply port (26) and the air return port (27) are respectively arranged on two adjacent side walls of the chassis (21), and the air supply port (26) is arranged upward or horizontally.

4. The temperature and humidity regulating air conditioner according to claim 3, characterized in that: The exhaust fan (24) is a centrifugal fan.

5. A temperature and humidity energy-saving adjustment system, characterized in that: It comprises a temperature and humidity regulating air conditioner, a cool storage (1) and an air conditioning cabinet (3) as described in any one of claims 1 to 4, wherein the temperature and humidity regulating air conditioner is arranged in the cool storage (1), and the air conditioning cabinet (3) connects indoor and outdoor air.

6. The temperature and humidity energy-saving adjustment system according to claim 5, characterized in that: The air conditioning cabinet (3) comprises a cabinet (31), a return air device (32), a second energy recovery heat exchanger (33), an exhaust device (36), an air supply device (38) and an air intake device (34); the second energy recovery heat exchanger (33) is arranged in the cabinet (31); the exhaust device (36) is connected to the return air device (32) via the second energy recovery heat exchanger (33); and the air intake device (34) is connected to the air supply device (38) via the second energy recovery heat exchanger (33).

7. The temperature and humidity energy-saving adjustment system according to claim 6, characterized in that: It also includes a temperature regulating device (37), wherein the temperature regulating device (37) is arranged in the cool storage (1).

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