CN205402987U - Novel energy -conserving air conditioning unit prevents frostbite - Google Patents

Abstract

The utility model provides a novel antifreeze energy-saving air conditioning unit, which includes: a hot water coil, a heat exchanger, a circulating water pump and a water supply mechanism; The upstream end of the inlet pipe is connected with the downstream end of the return pipe, and the hot water coil, the inlet pipe and the return pipe form an antifreeze circulation loop; the heat exchanger is located at the downstream end of the return pipe, and the antifreeze is in the heat exchanger heat exchange with an external heat source; the circulating water pump is arranged on the return water pipe; the water replenishment mechanism includes a water replenishment pipe connected to the return water pipe. The new antifreeze energy-saving air-conditioning unit of the utility model is based on the antifreeze demand of the unit, and performs secondary heat exchange with the heat source in the building before the antifreeze enters the air-conditioning unit, effectively utilizing the heat source of the building. Thus, the disadvantages existing in the traditional antifreeze technology are overcome, and the dual technical effects of antifreeze and energy saving are achieved.

Description

New antifreeze energy-saving air conditioning unit

technical field

The utility model relates to the technical field of air conditioners, in particular to a novel antifreeze energy-saving air conditioner unit.

Background technique

For areas where the outdoor temperature is relatively low in winter, the antifreeze of the air conditioning unit is a very headache. Because, once the coil tube freezes and cracks, the coil tube needs to be replaced, which increases the maintenance cost, and may cause the entire system to fail to operate normally in severe cases.

In order to solve the above problems, the air-conditioning unit in the building can use the heat source of the building as the heat source of the air-conditioning unit. However, if not properly designed, there is a high chance of the coil freezing and cracking. In this regard, it is safer to send the fresh air to the air conditioning unit after electric preheating, but the energy consumption is too large, and the lower the outdoor temperature, the greater the energy consumption.

Furthermore, the use of ethylene glycol solution as a heat source has a certain antifreeze function, but when the outdoor temperature is low, a relatively high concentration of ethylene glycol is required, and the higher the concentration of ethylene glycol, the worse the heat transfer effect. However, the northern regions generally have centralized supply of hot water. Due to the demand for antifreeze, it is not suitable to use hot water directly as a heat source, which is a great waste of energy.

Therefore, in view of the above problems, it is necessary to propose a further solution.

Utility model content

The purpose of the utility model is to provide a novel antifreeze energy-saving air-conditioning unit to overcome the deficiencies in the prior art.

In order to achieve the purpose of the above-mentioned utility model, the utility model provides a new antifreeze energy-saving air-conditioning unit, which includes: a hot water coil, a heat exchanger, a circulating water pump and a water replenishing mechanism;

The hot water coil has an inlet and an outlet, the inlet is connected to the inlet pipe, the outlet is connected to the return pipe, the upstream end of the inlet pipe is connected to the downstream end of the return pipe, the heat The water coil, the water inlet pipe and the return pipe form an antifreeze circulation loop; the heat exchanger is located at the downstream end of the return pipe, and the antifreeze exchanges heat with an external heat source in the heat exchanger; the circulation The water pump is arranged on the water return pipe; the water supply mechanism includes a water supply pipe, and the water supply pipe is connected with the water return pipe.

As an improvement of the new antifreeze energy-saving air-conditioning unit of the utility model, the heat exchanger is a plate heat exchanger.

As an improvement of the new antifreeze energy-saving air-conditioning unit of the present utility model, the plate heat exchanger has a first interface, a second interface, a third interface and a fourth interface, and the first interface and the second interface are respectively connected to the inlet The upstream end of the water pipe is connected to the downstream end of the water return pipe, and the third interface and the fourth interface are respectively connected to the pipeline interface where the external heat source is located.

As an improvement of the new antifreeze energy-saving air-conditioning unit of the present utility model, the air-conditioning unit further includes a backup circulating water pump, which is located on the return pipe and connected in parallel with the circulating water pump.

As an improvement of the novel antifreeze energy-saving air conditioner unit of the present utility model, the antifreeze agent is ethylene glycol.

As an improvement of the new antifreeze energy-saving air-conditioning unit of the present utility model, the water supply mechanism further includes a constant pressure tank and a water supply pump, and the constant pressure tank and the water supply pump are arranged on the water supply pipe.

Compared with the prior art, the beneficial effect of the utility model is: the new antifreeze energy-saving air-conditioning unit of the utility model is based on the antifreeze demand of the unit, and before the antifreeze enters the air-conditioning unit, it first performs a secondary exchange with the heat source in the building. Heat, effectively using the heat source of the building where it is located. Thus, the disadvantages existing in the traditional antifreeze technology are overcome, and the dual technical effects of antifreeze and energy saving are obtained.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments recorded in the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative work.

Fig. 1 is a structural schematic diagram of a specific embodiment of a novel antifreeze energy-saving air-conditioning unit of the present invention.

detailed description

The utility model will be described in detail below in conjunction with the implementations shown in the drawings, but it should be noted that these implementations are not limitations of the utility model, and those of ordinary skill in the art can perform functions, methods, or structures based on these implementations. The above equivalent transformation or replacement all belong to the protection scope of the present utility model.

As shown in FIG. 1 , the novel antifreeze energy-saving air-conditioning unit of the present utility model includes: a hot water coil 10 , a heat exchanger 20 , a circulating water pump 30 and a water supply mechanism.

The hot water coil 10 has an inlet and an outlet, wherein the inlet is connected to the downstream end of the water inlet pipe 11, the outlet is connected to the upstream end of the return pipe 12, and at the same time, the upstream end of the water inlet pipe 11 It is connected with the downstream end of the return pipe 12 . The antifreeze can flow in the hot water coil 10 , the water inlet pipe 11 and the return water pipe 12 , so that the hot water coil 10 , the water inlet pipe 11 and the return water pipe 12 form an antifreeze circulation loop. It should be noted that the "upstream" and "downstream" are defined in terms of the flow direction of the antifreeze. Preferably, the antifreezing agent is ethylene glycol, and its concentration can be selected according to antifreezing requirements.

The heat exchanger 20 is used to realize secondary heat exchange between the antifreeze agent and the heat source in the building before entering the air conditioning unit. Wherein, the heat source in the building may be hot water supplied centrally and the like. Specifically, the heat exchanger 20 is located at the downstream end of the return pipe 12. When the antifreeze enters the heat exchanger 20 through the return pipe 12, it will fully exchange heat with the heat source in the building. When hot water is supplied, the hot water of the building passes through the heat exchanger 20 for secondary heat exchange with the antifreeze solution. After heat exchange, the hot water of the building returns to the heat source of the building. After the heat exchange, the antifreeze solution enters the hot water coil 10 as the heat source of the unit, so as to realize the antifreeze of the hot water coil 10 .

Preferably, the heat exchanger 20 may be a plate heat exchanger. At this time, the plate heat exchanger 20 has a first interface, a second interface, a third interface and a fourth interface, wherein the first interface and the second interface are respectively connected to the upstream end of the water inlet pipe 11 and the The downstream end of the return pipe 12 is connected, and the third interface and the fourth interface are respectively connected to the pipeline interface where the external heat source is located.

The circulating water pump 30 is arranged on the return water pipe 12, so that the antifreeze solution from the hot water coil 10 flows into the return water pipe 12, re-enters the heat exchanger 20 through the circulating water pump 30, and reconnects with the heat source of the building. Carry out heat exchange, such a cycle goes round and round. In addition, the air conditioner unit further includes a backup circulating water pump 31 , the backup circulating water pump 31 is located on the return water pipe 12 and connected in parallel with the circulating water pump 30 .

The water replenishment mechanism includes a water replenishment pipe 41 , and the water replenishment pipe 41 is connected with the return water pipe 12 to realize water replenishment. Further, the water replenishment mechanism further includes a constant pressure tank 42 and a water replenishment pump 43 , and the constant pressure tank 42 and the water replenishment pump 43 are arranged on the water replenishment pipe 41 .

To sum up, the new antifreeze energy-saving air-conditioning unit of the present utility model is based on the antifreeze requirements of the unit, and before the antifreeze enters the air-conditioning unit, it first conducts a second heat exchange with the heat source in the building, effectively utilizing the energy of the building. heat source. Thus, the disadvantages existing in the traditional antifreeze technology are overcome, and the dual technical effects of antifreeze and energy saving are obtained.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to be included in the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (6)

1. a Novel anti-freezing energy-saving type air conditioner unit, it is characterised in that described air conditioning unit include: hot-water coil pipe, heat exchanger, water circulating pump and water compensation mechanism；

Described hot-water coil pipe has inlet and outlet, described import is connected with water inlet pipe, described outlet is connected with return pipe, and the upstream extremity of described water inlet pipe is connected with the downstream of described return pipe, and described hot-water coil pipe, water inlet pipe and return pipe form antifreezing agent closed circuit；Described heat exchanger is positioned at the downstream of described return pipe, and described antifreezing agent carries out heat exchange with external heat source in described heat exchanger；Described water circulating pump is arranged on described return pipe；Described water compensation mechanism includes filling pipe, and described filling pipe is connected with described return pipe.

2. Novel anti-freezing energy-saving type air conditioner unit according to claim 1, it is characterised in that described heat exchanger is plate type heat exchanger.

3. Novel anti-freezing energy-saving type air conditioner unit according to claim 2, it is characterized in that, described plate type heat exchanger has first interface, the second interface, the 3rd interface and the 4th interface, described first interface and the second interface are connected with the downstream of the upstream extremity of described water inlet pipe and described return pipe respectively, and described 3rd interface and the 4th interface are connected with the pipe interface at described external heat source place respectively.

4. Novel anti-freezing energy-saving type air conditioner unit according to claim 1, it is characterised in that the described air conditioning unit standby water circulating pump that also includes, described standby water circulating pump is positioned on described return pipe, and is in parallel with described water circulating pump.

5. Novel anti-freezing energy-saving type air conditioner unit according to claim 1, it is characterised in that described antifreezing agent is ethylene glycol.

6. Novel anti-freezing energy-saving type air conditioner unit according to claim 1, it is characterised in that described water compensation mechanism also includes Constant pressure tank and small pump, and described Constant pressure tank and small pump are arranged on described filling pipe.