JPS6028947Y2 - Refrigerated open showcase - Google Patents

Description

[Detailed description of the invention] This invention relates to a refrigerated open showcase that has two refrigeration units, one for main cooling and one for dehumidifying cooling, to reduce the amount of frost on the cooler and improve the coefficient of performance of the refrigeration system. It is something.

Fig. 1 is a vertical cross-sectional view of a conventional showcase of this type (hereinafter referred to as a two-cooler set showcase). In the figure, 1 is an outer case of the main body with an opening 1a formed on the front, and 2 is abbreviated as outer case 1. The inner case of the main body is formed of a heat insulating material in the same shape and is provided inside the outer case 1, and together with the outer case 1 constitutes the main case.

3 is a storage chamber for articles provided inside the inner case 2; 4 is an air circulation path formed along the outer walls of the inner case 2 and the storage chamber 3; and 5 is provided at the upper edge of the front side of the storage chamber 3. 6 is an air intake port provided on the lower edge of the front side of the storage chamber 3 and communicates between the storage chamber 3 and the circulation path 4. 7 is an air intake port on the back side of the main case. 8 is a blower provided in the upstream side of the main cooler 7; 9 is a drain outlet hole that communicates the circulation route 4 with the outside; 10 is a main cooler provided on the bottom side of the main cooler 7; This dehumidifying cooler is provided in the circulation path 4 on the upstream side of the main cooler 7 and has a temperature level higher than that of the main cooler 7, which is set to approximately 0°C.

Further, each refrigeration unit of the main cooler 7 and dehumidifying cooler 10 is shown in FIGS. 2A and 2B.

FIG. 2A shows a refrigeration unit of the main cooler 7, and this refrigeration unit 11 is composed of a refrigerant compressor 12, a condenser 13, and an expansion mechanism 4.

FIG. 2B shows a refrigeration unit of the dehumidifying cooler 10, and this refrigeration unit 15 is composed of a refrigerant compressor 16, a condenser 17, and an expansion mechanism 18.

These refrigeration units 11.15 are each provided independently.

In other words, this two-cooler complete showcase is
The main cooler 7 and the dehumidifying cooler 10 are provided in separate refrigeration units 11.15, and the dehumidifying cooler 10 is set upstream from the main cooler 7 and at a higher temperature level than the main cooler 7. When the showcase operation starts,
In other words, when the temperature of the storage chamber 3 is high, by first operating only the refrigeration unit 15 and then operating the refrigeration unit 11, etc., the amount of frost on the main cooler 7 is reduced and the coefficient of performance of the refrigeration system is improved. This is how it was done.

However, in the conventional two-cooler set showcase, as described above and shown in FIG.
are distributed in the circulation path 4 on the back side of the main body case, and the dehumidifying cooler 10 is provided in the circulation path 4 on the bottom side of the main body case.

For this reason, there is a drawback that it is extremely inconvenient to attach the coolers 7 and 10 to the main body case and to maintain and manage the coolers after the attachment.

This idea was made to eliminate the above-mentioned drawbacks, and aims to provide a refrigerated open showcase that is extremely convenient for installing both the main and dehumidifying coolers to the main body case and for maintenance management after installation. purpose.

An embodiment of this invention will be described below with reference to FIG.

FIG. 3 is a longitudinal sectional view showing an embodiment of the refrigerated open showcase according to this invention, and in the figure, 1 to 6 and 8 and 9 are the same as those in FIG. 1.

7 and 10 also indicate a main cooler and a dehumidifying cooler as in FIG. It is placed adjacent to.

In other words, this invention has two main and dehumidifying coolers 7, which are closely related in terms of the configuration of the cooling medium piping and the cooling function.
10 is disposed adjacent to the circulation path 4 in the upstream and downstream directions on the back side of the main body case.

Therefore, according to this invention, the main cooler 7 and the dehumidifying cooler 10 can be attached to the main body case and maintenance after the attachment can be performed only on the back side of the main body case, which is extremely convenient.

In addition, this kind of showcase also has a blower 8 at the bottom.
Various equipment such as a compressor (not shown) is often arranged, but according to this invention, compared to the conventional showcase shown in FIG. A secondary effect is that the space for arranging equipment at the bottom of the case can be saved.

It goes without saying that operating only the dehumidifying cooler 10 at high temperatures has the effect of preventing frost formation on the main cooler 7.

[Brief explanation of drawings]

Figure 1 is a vertical cross-sectional view of a conventional refrigerated open showcase.
FIGS. 2A and 2B are block diagrams of the refrigeration units of the main cooler and dehumidifying cooler of the above showcase, and FIG. 3 is a longitudinal sectional view showing one embodiment of the refrigerated open showcase according to this invention. 1...Outer case, 2...Inner case, 4
... Circulation route, 7 ... Main cooler, 10
... Dehumidification cooler, 11 ... Refrigeration unit of main cooler, 15 ... Refrigeration unit of dehumidification cooler.

Claims (1)

[Scope of utility model registration request] A main cooler for cooling the air flow is provided in the air flow circulation path formed in the main body case, and a temperature level higher than that of the main cooler is provided on the upstream side of the main cooler in the circulation path of the main body case. A dehumidifying cooler is provided, and a refrigeration unit for supplying a cooling medium to the dehumidifying cooler is provided independently of the refrigeration unit of the main cooler, wherein the main cooler and the dehumidifying cooler are installed on the back side of the main body case. A refrigerated open showcase characterized by being arranged adjacent to each other in the upstream and downstream directions within a side circulation path.